Engineering Plastics Advanced Twin-Screw Extrusion Technology Processing Solutions and Industry Applications

Ndi kupita patsogolo kofulumira kwa mafakitale apadziko lonse lapansi, kufunikira kwa zida zogwira ntchito kwambiri pamagalimoto, zamagetsi ndi zamagetsi, kumanga, zachipatala ndi zina zikuchulukirachulukira tsiku ndi tsiku. Mapulasitiki a engineering, ngati chinthu chofunikira kwambiri chochita bwino kwambiri, asintha pang'onopang'ono zida zachitsulo ndi mapulasitiki wamba pamawonekedwe ambiri ogwiritsira ntchito chifukwa cha makina awo abwino kwambiri., kukana kutentha, kukana dzimbiri, dimensional bata ndi processability. Ukadaulo wa Twin-screw extrusion ndiye ukadaulo wopangira makina opanga mapulasitiki, ndi machitidwe a zipangizo extrusion mwachindunji zimatsimikizira khalidwe, production efficiency and application effect of engineering plastic products.

We are committed to providing professional twin-screw extrusion solutions for engineering plastics processing, relying on our independently developed and manufactured HTS series extruders with high-torque gearboxes, which are specially designed for the processing characteristics and application needs of engineering plastics. This article will comprehensively elaborate on the performance characteristics, classification, processing difficulties of engineering plastics, the core role of twin-screw extrusion technology in engineering plastics processing, the advantages of our HTS series extruders and their targeted adaptation to engineering plastics, as well as the specific application fields, processing techniques and common problems and solutions. By supplementing detailed technical parameters, processing details and industry application cases, the article will be enriched to 3000-4000 words, providing comprehensive and professional reference for engineering plastics processing enterprises, technicians and relevant practitioners.

1. Overview of Engineering Plastics Industry and Core Performance Characteristics

1.1 Current Situation and Development Trend of Engineering Plastics Industry

Engineering plastics refer to a class of plastic materials that can be used as structural materials and bear mechanical loads in a wide temperature range. Compared with general plastics (such as polyethylene PE, polypropylene PP, polyvinyl chloride PVC), engineering plastics have more excellent comprehensive performance, and can meet the harsh use requirements in industrial production and high-end product manufacturing. In recent years, driven by the upgrading of downstream industries such as automotive lightweight, electrical and electronic intelligence, and medical device high-endization, the global engineering plastics market has shown a steady and rapid growth trend.

According to relevant industry data, the global engineering plastics market size has exceeded 100 billion US dollars, and it is expected to maintain a compound annual growth rate of 7%-10% in the next five years. Among them, Asia-Pacific is the world’s largest engineering plastics production and consumption market, accounting for more than 55% of the global market share, mainly due to the rapid development of automotive, electrical and electronic industries in China, India and other countries, as well as the continuous improvement of industrial supporting capacity and technological innovation level. China, as the world’s largest engineering plastics consumer and producer, has a huge market demand, and the annual output and consumption are growing at a double-digit rate, especially in the fields of new energy vehicles, 5G communications, and medical devices, the demand for high-performance engineering plastics is showing an explosive growth trend.

The development trend of the engineering plastics industry is mainly reflected in five aspects: first, high performance and functionalization. With the continuous improvement of use requirements in downstream fields, engineering plastics are developing towards higher heat resistance, higher strength, better wear resistance and special functions (such as flame retardancy, antistatic, antibacterial, kukana ma radiation), kuti agwirizane ndi malo ovuta ogwirira ntchito a kutentha kwakukulu, kuthamanga kwambiri, dzimbiri ndi ma radiation; chachiwiri, opepuka ndi kuphatikiza. Mu magalimoto, mlengalenga ndi madera ena, kuti akwaniritse zolinga zopulumutsa mphamvu komanso kuchepetsa utsi, mapulasitiki aumisiri akugwiritsidwa ntchito kwambiri m'malo mwa zitsulo, ndipo kuphatikizika kwa mapangidwe azinthu kukukula kwambiri, zomwe zingachepetse chiwerengero cha zigawo, kuchepetsa kupanga ndi kuchepetsa ndalama; chachitatu, kuteteza chilengedwe ndi recyclability. Ndi kulimbikitsa mfundo zoteteza zachilengedwe padziko lonse lapansi komanso kupititsa patsogolo chidziwitso chachitetezo cha chilengedwe, kupanga ndi kugwiritsa ntchito mapulasitiki opangira uinjiniya, biodegradable engineering plastics and environmentally friendly processing technologies have become the focus of the industry, reducing environmental pollution caused by plastic waste; fourth, intelligence and precision of processing equipment. Engineering plastics have high processing difficulty and strict quality requirements, which put forward higher requirements on processing equipment. Intelligent, precise and efficient twin-screw extruders and automatic production lines have become the mainstream of the industry, realizing real-time monitoring, automatic parameter adjustment and predictive maintenance of the processing process; fifth, diversification of application fields. Engineering plastics are gradually expanding from traditional automotive, electrical and electronic fields to new energy, medical, aerospace, construction and other emerging fields, opening up new market space.

Against this background, twin-screw extrusion technology, as the core processing technology of engineering plastic compounds, has become the key to improving the competitiveness of engineering plastics enterprises. Engineering plastics are sensitive to overheating and hydrolytic degradation, and have high requirements on processing temperature, shear force, residence time and temperature control precision. Our HTS series extruders are specially designed for the processing characteristics of engineering plastics, with high torque, liwilo lalikulu, precise temperature control and excellent dispersibility, which can effectively solve the processing difficulties of engineering plastics and help enterprises achieve high-quality, efficient and stable production.

1.2 Core Performance Characteristics of Engineering Plastics

Poyerekeza ndi mapulasitiki ambiri ndi zitsulo, mapulasitiki a engineering ali ndi magwiridwe antchito apadera, zomwe zimatsimikizira kugwiritsidwa ntchito kwawo kwakukulu m'mafakitale osiyanasiyana. Makhalidwe apamwamba a mapulasitiki aumisiri amawonekera makamaka pazinthu zisanu zotsatirazi, amenenso anaika patsogolo zofunika zapadera kwa processing luso lawo ndi zipangizo:

1.2.1 Kukaniza Kwabwino Kwambiri Kutentha ndi Kukaniza Kozizira

Mapulasitiki aumisiri ali ndi mitundu yosiyanasiyana ya kutentha, zomwe zimatha kukhala ndi zida zamakina zabwino (mphamvu, kulimba, kuuma) m'malo otentha kwambiri komanso otsika. Compared with general plastics, zomwe nthawi zambiri zimataya makina awo pa 80-120 ℃, mapulasitiki ambiri aumisiri amatha kugwira ntchito mokhazikika pa 100-250 ℃, ndi mapulasitiki apadera auinjiniya (monga PEEK, PI) imatha kugwira ntchito ngakhale kutentha kopitilira 300 ℃. Nthawi yomweyo, mapulasitiki a engineering amakhalanso ndi kukana kuzizira bwino, zomwe zimatha kukhala zolimba bwino pamatenthedwe otsika (pansi -40 ℃), ndipo si zophweka brittle fracture. Kuchita uku kumapangitsa mapulasitiki a engineering kukhala oyenera kugwiritsidwa ntchito m'malo otentha kwambiri, monga magawo a injini zamagalimoto (kutentha kwakukulu) ndi zida zamagetsi zakunja (kutentha kochepa).

Kukana kwabwino kwa kutentha kwa mapulasitiki a uinjiniya makamaka chifukwa cha mawonekedwe awo apadera a maselo (monga mphete zonunkhira, mphete za heterocyclic) ndi mphamvu zamphamvu za intermolecular, zomwe zimapangitsa kuti zisakhale zophweka kusungunuka ndi kuwola pa kutentha kwakukulu. Komabe, izi zimabweretsanso zovuta zina pakukonza: apamwamba processing kutentha chofunika kuti zisungunuke ndi plasticize, ndi kuwongolera bwino kutentha kumafunika kuti tipewe kuwonongeka kwa kutentha.

1.2.2 Kukaniza kwa Corrosion kwabwino komanso Kukhalitsa

Mapulasitiki aumisiri ali ndi kukhazikika kwa mankhwala komanso kukana dzimbiri, ndipo si zophweka kuti ziwonongeke ndi zidulo, alkalis, mchere, organic solvents ndi mankhwala ena. Poyerekeza ndi zipangizo zachitsulo, zomwe ndi zosavuta kuchita dzimbiri komanso kuwononga, mapulasitiki auinjiniya amakhala ndi moyo wautali wautumiki m'malo ovuta kwambiri. Mwachitsanzo, polyamide (PA) mapulasitiki aumisiri amalimbana ndi zosungunulira zambiri za organic ndi ma acid ofooka ndi alkalis; polycarbonate (PC) mapulasitiki a uinjiniya amalimbana ndi dzimbiri ndi ma asidi osakhala oxidizing ndi mchere; polyphenylene sulfide (PPS) mapulasitiki aumisiri amalimbana ndi dzimbiri pafupifupi mankhwala onse kupatula amphamvu oxidizing zidulo.

Kuphatikiza apo, mapulasitiki a engineering ali ndi kukana kwanyengo komanso kukana kukalamba, ndipo si zophweka kunyozeka ndi kukalamba pansi pa zochitika za dzuwa, mvula, oxygen and other environmental factors, which ensures their long-term stable use in outdoor and harsh environments. This performance makes engineering plastics widely used in chemical equipment, outdoor electrical equipment, automotive exterior parts and other fields.

1.2.3 Easy Processing and High Production Efficiency

Poyerekeza ndi zipangizo zachitsulo, engineering plastics have the advantages of easy processing, simple production process and high production efficiency. Metal materials usually need complex processing procedures such as forging, casting, machining, which have high energy consumption, low efficiency and high cost; while engineering plastics can be processed by extrusion, injection molding, blow molding and other methods, which can realize mass production, simplify the production process, reduce energy consumption and production cost. Mwachitsanzo, the processing cycle of an engineering plastic automotive part by injection molding is only a few seconds to tens of seconds, while the processing cycle of the same metal part may take several hours to several days.

Komabe, engineering plastics also have certain processing difficulties: they are sensitive to overheating and hydrolytic degradation, and are easy to decompose if the processing temperature is too high or the residence time is too long; at the same time, some engineering plastics (such as PA) have high water absorption, which affects the processing effect and product quality. Therefore, it is necessary to use professional processing equipment and scientific processing techniques to ensure the processing quality.

1.2.4 Excellent Dimensional Stability and Electrical Insulation

Mapulasitiki aumisiri ali ndi kukhazikika kwabwino, ndipo kuchuluka kwa shrinkage ndi kochepa (kawirikawiri 0.3%-1.5%) pa processing ndi ntchito, zomwe zimatha kutsimikizira kulondola kwazinthu ndikupewa mapindikidwe. Kuchita kumeneku ndikofunikira kwambiri pamagawo olondola kwambiri, monga zolumikizira zamagetsi, magalimoto mwatsatanetsatane zigawo, zida zamankhwala, ndi zina. Kukhazikika kwabwino kwa mapulasitiki opangira uinjiniya makamaka chifukwa cha kristalo wawo wapamwamba, mayamwidwe otsika madzi (kupatula mitundu ina monga PA) ndi mphamvu zamphamvu za intermolecular.

Kuphatikiza apo, mapulasitiki ambiri aumisiri ali ndi ntchito yabwino kwambiri yotchinjiriza magetsi, zomwe zimatha kukhalabe ndi ntchito yabwino yotchinjiriza mumitundu yosiyanasiyana ya kutentha komanso ma frequency osiyanasiyana, ndipo sizovuta kuyendetsa magetsi ndi arc. Izi zimapangitsa kuti mapulasitiki a engineering amagwiritsidwa ntchito kwambiri m'magawo amagetsi ndi zamagetsi, monga ma wiring board, ma cable, zolumikizira, maulendo, ma motors ndi zida zina zamagetsi.

1.2.5 Kulemera Kwambiri ndi Mphamvu Zapamwamba Zapadera, Kupambana Kwambiri kwa Wear

Mapulasitiki aumisiri ali ndi mawonekedwe a kulemera kopepuka (kachulukidwe ndi 1/3-1/5 za zitsulo) ndi mkulu mwachindunji mphamvu (mphamvu pa unit kulemera ndi ofanana kapena ngakhale apamwamba kuposa zipangizo zitsulo). Mwachitsanzo, mphamvu yeniyeni ya galasi CHIKWANGWANI analimbitsa polyamide (PA66+GF30) ndi apamwamba kuposa a carbon steel wamba, zomwe zingathe kuchepetsa kulemera kwa mankhwala ndikuonetsetsa kuti makina akugwira ntchito. Kuchita uku ndikofunikira kwambiri pamagalimoto, mlengalenga ndi magawo ena omwe amatsata zopepuka komanso zopulumutsa mphamvu, zomwe zingachepetse kugwiritsa ntchito mafuta komanso kutulutsa mpweya wa kaboni.

Nthawi yomweyo, mapulasitiki a engineering alinso ndi kukana kovala bwino komanso kukana kukangana, ndipo kugunda kwapakati kumakhala kochepa, which can be used in the production of wear-resistant parts (such as gears, bearings, sliding blocks) without additional lubrication or with less lubrication, reducing the maintenance cost of products. Mwachitsanzo, polyoxymethylene (POM) engineering plastics have excellent wear resistance and are known as “plastic steel”, which is widely used in the production of automotive gears, electrical components and other wear-resistant parts.

1.3 Common Classification of Engineering Plastics

Engineering plastics can be divided into different types according to their chemical structure, performance level and application field. The common classification methods are as follows, which helps to better understand the processing characteristics and application scenarios of different engineering plastics, and select appropriate extrusion equipment and processing techniques:

1.3.1 Gulu potengera Magwiridwe Antchito

Malingana ndi msinkhu wa ntchito, mapulasitiki aumisiri amatha kugawidwa m'mapulasitiki aukadaulo wamba ndi mapulasitiki apadera aumisiri.

• General Engineering Plastics: Ndiwo mapulasitiki a engineering omwe amagwiritsidwa ntchito kwambiri, ndi luso lazopangapanga lokhwima, mtengo wotsika komanso magwiridwe antchito abwino. Mitundu yayikulu imaphatikizapo polyamide (PA), polycarbonate (PC), polyoxymethylene (POM), polyethylene terephthalate (PET), polybutylene terephthalate (Mtengo PBT), ndi zina. Mapulasitiki a engineering General amagwiritsidwa ntchito makamaka pamagalimoto, zamagetsi ndi zamagetsi, zipangizo zapakhomo ndi minda ina, monga zida zamagalimoto, zolumikizira zamagetsi, zipolopolo zanyumba, ndi zina.
• Pulasitiki Yopanga Zapadera: Amachita bwino kwambiri (monga kukana kutentha kwakukulu, kukana dzimbiri, makina katundu) kuposa mapulasitiki aukadaulo wamba, koma teknoloji yopanga ndi yovuta ndipo mtengo wake ndi wapamwamba. The main varieties include polyphenylene sulfide (PPS), polyether ether ketone (PEEK), polyimide (PI), polysulfone (PSU), polyethersulfone (PES), ndi zina. Special engineering plastics are mainly used in high-end fields such as aerospace, zida zamankhwala, new energy, and chemical equipment, such as aerospace components, medical implants, high-temperature resistant electrical components, ndi zina.

1.3.2 Classification by Chemical Structure

According to the chemical structure of the molecular chain, engineering plastics can be divided into polyamide (PA), polycarbonate (PC), polyoxymethylene (POM), polyester (PET, Mtengo PBT), polyphenylene sulfide (PPS), polyether ether ketone (PEEK), ndi zina. Each type of engineering plastic has its own unique performance characteristics and processing requirements:

• Polyamide (PA): Also known as nylon, it has excellent mechanical strength, wear resistance, toughness and chemical resistance, but has high water absorption, which affects the dimensional stability. Common varieties include PA6, PA66, PA11, PA12, ndi zina. It is widely used in automotive parts (gears, bearings, intake manifolds), zolumikizira zamagetsi, textile fibers, ndi zina.
• Polycarbonate (PC): It has excellent transparency, impact strength, heat resistance and electrical insulation, but has poor wear resistance and is easy to scratch. It is widely used in electrical and electronic fields (wiring boards, lamp covers), automotive fields (headlamp lenses, instrument panels), medical fields (medical containers), ndi zina.
• Polyoxymethylene (POM): It has excellent wear resistance, friction resistance, dimensional stability and mechanical strength, and is not easy to absorb water. It is known as “plastic steel” and is widely used in automotive parts (gears, sliding blocks), electrical components (switches, bearings), mechanical parts, ndi zina.
• Polyester (PET, Mtengo PBT): PET has excellent transparency, heat resistance and mechanical strength, and is mainly used in fibers, films, bottles and other fields; PBT has excellent chemical resistance, electrical insulation and processing fluidity, and is widely used in electrical and electronic fields (zolumikizira, maulendo), automotive parts, ndi zina.
• Polyphenylene Sulfide (PPS): It has excellent heat resistance (long-term use temperature up to 200-220℃), kukana dzimbiri, flame retardancy and electrical insulation, but has poor toughness. It is widely used in high-temperature resistant electrical components, automotive engine parts, chemical equipment, ndi zina.
• Polyether Ether Ketone (PEEK): It has excellent comprehensive performance, long-term use temperature up to 250-300℃, good corrosion resistance, mechanical strength and biocompatibility. It is mainly used in high-end fields such as aerospace, medical implants, and high-temperature resistant electrical components.

1.3.3 Classification by Application Field

According to the application field, engineering plastics can be divided into automotive-grade engineering plastics, electrical-grade engineering plastics, medical-grade engineering plastics, aerospace-grade engineering plastics, ndi zina. Different application fields have different requirements on the performance of engineering plastics. Mwachitsanzo, automotive-grade engineering plastics require good heat resistance, impact strength and weather resistance; electrical-grade engineering plastics require good electrical insulation and flame retardancy; medical-grade engineering plastics require good biocompatibility and sterility; aerospace-grade engineering plastics require good high-temperature resistance, low weight and high strength.

2. Core Processing Technology of Engineering Plastics: Twin-Screw Extrusion Technology

Engineering plastics processing mainly includes extrusion, injection molding, blow molding, molding and other methods, among which twin-screw extrusion technology is the core technology for the production of engineering plastic compounds (such as modified engineering plastics, reinforced engineering plastics) and semi-finished products (such as pipes, sheets, fibers). Compared with single-screw extrusion technology, twin-screw extrusion technology has the advantages of strong shearing force, good mixing effect, precise temperature control, short residence time and strong adaptability to raw materials, which can effectively solve the processing difficulties of engineering plastics (such as sensitivity to overheating and hydrolytic degradation, poor mixing effect, low processing efficiency) and ensure the quality of engineering plastic products.

2.1 Processing Difficulties of Engineering Plastics and Requirements for Extrusion Equipment

As mentioned earlier, engineering plastics have excellent comprehensive performance, but their processing difficulty is also higher than that of general plastics, mainly due to their special molecular structure and performance characteristics. The main processing difficulties of engineering plastics and the corresponding requirements for extrusion equipment are as follows:

2.1.1 Sensitivity to Overheating and Hydrolytic Degradation

Most engineering plastics (such as PA, Mtengo PBT, PPS) are sensitive to overheating and hydrolytic degradation. If the processing temperature is too high or the residence time in the extruder is too long, the molecular chain of the engineering plastic will break, resulting in thermal decomposition, which will reduce the mechanical properties, heat resistance and other performance of the product, and even cause discoloration, carbonization and other defects. Kuphatikiza apo, some engineering plastics (such as PA) have high water absorption, and the moisture in the material will cause hydrolytic degradation during the high-temperature processing process, affecting the product quality.

This puts forward two key requirements for extrusion equipment: first, precise temperature control capacity, which can strictly control the processing temperature within the optimal range of engineering plastics, avoid local overheating, and the temperature control precision should reach ±1℃; chachiwiri, short residence time, which can reduce the time that the material stays in the extruder barrel, avoid thermal decomposition and hydrolytic degradation. Twin-screw extruders have the advantages of short residence time (kawirikawiri 1-5 minutes) and precise temperature control, which are more suitable for engineering plastics processing than single-screw extruders (residence time 5-10 minutes).

2.1.2 High Requirements on Mixing and Dispersing Effect

In engineering plastics processing, it is often necessary to add modifiers (such as glass fiber, carbon fiber, talc, zoletsa moto, compatibilizers) to improve the performance of the product (such as reinforcing, toughening, flame retardant). Mwachitsanzo, adding glass fiber to PA can improve its strength and dimensional stability; adding flame retardants to PBT can improve its flame retardancy. The uniform mixing and dispersion of modifiers in the engineering plastic matrix is crucial to the performance of the final product. If the mixing and dispersing effect is poor, the modifiers will agglomerate, resulting in uneven performance of the product, and even reduce the mechanical properties of the product.

This requires the extrusion equipment to have strong shearing force and mixing capacity. Twin-screw extruders adopt intermeshing co-rotating or counter-rotating twin-screw structure, and the relative movement between the screws can generate strong shear force and kneading force, which can fully break the agglomerates of modifiers, make the modifiers uniformly dispersed in the engineering plastic matrix, and ensure the mixing and dispersing effect. Kuphatikiza apo, the modular design of the twin-screw can freely combine different screw elements (such as conveying elements, mixing elements, shearing elements) according to the type of engineering plastic and modifier, further improving the mixing and dispersing effect.

2.1.3 High Requirements on Wear Resistance of Equipment

In the processing of reinforced engineering plastics (such as glass fiber reinforced PA, carbon fiber reinforced PPS), the added glass fiber, carbon fiber and other modifiers have high hardness, which will cause serious wear to the screw and barrel of the extruder during the extrusion process. If the screw and barrel have poor wear resistance, adzavala msanga, kuchititsa kuchepetsa kumeta ubweya mphamvu ndi kusakaniza mphamvu extruder, kukhudza khalidwe la mankhwala ndi kuchepetsa moyo wa utumiki wa zipangizo.

Izi zimafunikira wononga ndi mbiya ya extruder kuti ipangidwe ndi zida zapamwamba zosamva komanso kukonzedwa ndiukadaulo wapamwamba wopanga.. Ma HTS athu amtundu wa extruder amatengera chitsulo chosamva kuvala cha alloy cha screw ndi mbiya, ndi kulandira chithandizo cha bimetallic composite kapena chithandizo cha laser cladding, zomwe zimathandizira kwambiri kukana kuvala komanso kukana kwa dzimbiri kwa screw ndi mbiya, ndipo amatha kuzolowera kukonzanso kwa mapulasitiki olimba aukadaulo okhala ndi zosintha zolimba kwambiri.

2.1.4 Zofunikira Zapamwamba Pakukonza Fluidity ndi Kuwongolera Kupanikizika

Mapulasitiki ena a engineering (monga PPS, PEEK) have high viscosity and poor processing fluidity, which require the extruder to have strong conveying capacity and pressure control capacity to ensure the smooth progress of extrusion. If the conveying capacity is insufficient or the pressure control is unstable, it will cause uneven extrusion speed, unstable product size, and even equipment blockage.

Twin-screw extruders have strong conveying capacity and stable pressure control capacity. The intermeshing of the twin screws can generate strong pumping force, which can effectively convey high-viscosity engineering plastic materials; at the same time, the extruder is equipped with a high-precision pressure sensor, which can monitor the extrusion pressure in real time and adjust the screw speed and feeding speed automatically to ensure the stability of the extrusion pressure and the smooth progress of processing.

2.2 Working Principle and Process Flow of Engineering Plastics Twin-Screw Extrusion

The twin-screw extrusion process of engineering plastics is a complex physical and chemical process, which involves the interaction of multiple factors such as temperature, pressure, shear force and time. The core purpose is to melt and plasticize the engineering plastic raw materials and modifiers, mix them uniformly, and then extrude them into the required shape (such as particles, pipes, sheets, fibers) through the die head. The specific working principle and process flow are as follows:

2.2.1 Raw Material Pretreatment

Raw material pretreatment is the foundation of engineering plastics extrusion processing, which directly affects the processing effect and product quality. The raw materials of engineering plastics mainly include engineering plastic resin (such as PA, PC, POM), modifiers (such as glass fiber, carbon fiber, talc, zoletsa moto), compatibilizers, lubricants and other additives. The pretreatment steps are as follows:

• Drying Treatment: Most engineering plastics (such as PA, Mtengo PBT, PPS) have high water absorption, and the moisture in the raw materials will cause hydrolytic degradation during high-temperature processing, resulting in product defects (such as bubbles, cracks, reduced mechanical properties). Therefore, the raw materials must be dried before processing. The drying temperature and time are determined according to the type of engineering plastic: for example, PA6 is dried at 80-100℃ for 4-6 maola, PA66 is dried at 100-120℃ for 6-8 maola, PBT is dried at 120-140℃ for 2-4 maola, PPS is dried at 150-160℃ for 3-5 maola. The moisture content of the dried raw materials should be controlled below 0.1%-0.2%.
• Premixing Treatment: According to the formula ratio, the dried engineering plastic resin, modifiers and additives are put into a high-speed mixer for premixing. The purpose of premixing is to make the modifiers and additives uniformly adhere to the surface of the resin particles, improve the mixing effect during extrusion, and avoid local agglomeration of modifiers. The mixing speed is generally 800-1200 rpm pa, and the mixing time is 5-10 minutes. For some modifiers with poor compatibility (such as glass fiber and PA), a compatibilizer should be added during premixing to improve the compatibility between the modifier and the resin.
• Crushing and Sieving: For engineering plastic resins with large particle size or modifiers with uneven particle size (such as glass fiber), crushing and sieving treatment should be carried out to ensure the uniformity of raw materials and avoid affecting the mixing and dispersing effect during extrusion. The particle size of the crushed raw materials should be controlled at 20-40 mesh.

2.2.2 Feeding and Conveying

The premixed raw materials are sent to the feeding hopper of the twin-screw extruder through a screw feeder or a belt feeder. The feeding device of the extruder is usually equipped with a frequency conversion speed regulation function, which can adjust the feeding speed according to the screw speed and extrusion speed to ensure that the materials enter the extrusion cavity stably and uniformly, avoiding material accumulation or insufficient feeding. The feeding hopper is also equipped with a drying device to prevent the raw materials from absorbing moisture again during feeding.

2.2.3 Melting, Mixing and Shearing

The materials entering the extrusion cavity of the twin-screw extruder are pushed forward continuously by the rotating screws. The extrusion cavity is composed of a screw and a barrel, and the volume of the extrusion cavity gradually decreases along the axis direction. When the screws rotate, the materials are gradually compressed under the action of the screws and the barrel, and the pressure in the extrusion cavity gradually increases (generally 5-15MPa).

Nthawi yomweyo, the materials are subjected to strong shear force and friction force generated by the relative movement between the screws and the barrel, as well as between the screw flights. The shear force and friction force can fully break the agglomerates of modifiers, make the modifiers uniformly dispersed in the melted engineering plastic resin, and promote the fusion and compatibility between the modifier and the resin. The friction force can also generate a certain amount of heat, which is combined with the external heating of the barrel (electric heating or steam heating) to make the engineering plastic resin gradually melt and plasticize.

The barrel of the extruder is usually divided into 4-6 temperature control sections (feeding section, melting section, mixing section, homogenizing section, die head section), and the temperature of each section is precisely controlled according to the type of engineering plastic. Mwachitsanzo, when processing PA66+GF30 (glass fiber reinforced PA66), the temperature of the feeding section is 120-140℃, the melting section is 250-260℃, the mixing section is 260-270℃, the homogenizing section is 250-260℃, and the die head section is 240-250℃. The precise temperature control can ensure that the resin is fully melted without thermal decomposition, and the modifiers are uniformly dispersed.

2.2.4 Extrusion and Shaping

The fully melted, mixed and dispersed material is pushed to the die head of the extruder by the screws. The die head is designed according to the shape of the final product: for the production of engineering plastic compounds (granules), the die head is equipped with multiple circular die holes (the number and size of die holes are determined according to the particle size of the granules); for the production of pipes, sheets, fibers, the die head is designed into corresponding shapes (such as circular die for pipes, flat die for sheets).

The material is extruded from the die head at a high speed to form continuous semi-finished products (such as strips for granules, pipes, sheets). The temperature of the die head is slightly lower than that of the homogenizing section, which can prevent the material from decomposing due to excessive temperature and ensure the shaping effect of the semi-finished products. The extrusion speed is controlled according to the type of engineering plastic and the shape of the product, generally ranging from 0.5-5m/min.

2.2.5 Cooling and Solidification

The extruded semi-finished products are sent to a cooling device for rapid cooling and solidification. The cooling method is determined according to the shape of the product: za mabala (kupanga granule), Kuzirala kwa thanki lamadzi kumagwiritsidwa ntchito, ndipo kutentha kwa madzi ozizira kumayendetsedwa pa 20-30 ℃, ndipo nthawi yozizira ndi 2-5 minutes; kwa mapaipi ndi mapepala, Kuziziritsa kwa mpweya kapena kupopera madzi kumagwiritsidwa ntchito, ndi liwiro loziziritsa liyenera kuyang'aniridwa kuti zisawonongeke chifukwa cha kuzizira kosiyana. Kuzizira kofulumira kungapangitse kuti zinthu zomwe zatha pang'onopang'ono zikhazikike mwachangu, sungani mawonekedwe ndi kukula kwa mankhwala, ndi kupititsa patsogolo makina azinthu.

2.2.6 Kudula ndi Post-Processing

Pambuyo kuzirala ndi kulimbitsa, zinthu zomalizidwa pang'onopang'ono zimasinthidwa kukhala chomaliza podula kapena masitepe ena pambuyo pokonza. Kwa kupanga engineering pulasitiki mankhwala (granules), mizere yoziziritsa imatumizidwa ku granulator kuti idulidwe, ndipo granulator ili ndi mpeni wozungulira, which can cut the strips into granular products with uniform size (the particle size is generally 2-5mm, which can be adjusted according to customer needs). For the production of pipes and sheets, the cooled semi-finished products are cut into the required length through a cutting machine; for the production of fibers, the cooled filaments are drawn and wound to form fiber products.

Kuphatikiza apo, the final product also needs to undergo post-processing steps such as screening, inspection and packaging. The screening step is to remove unqualified products (such as too large, too small or agglomerated particles); the inspection step is to detect the performance (such as mechanical strength, kukana kutentha, dimensional accuracy) of the product to ensure that it meets the customer’s requirements; the packaging step is to package the qualified product in a sealed and moisture-proof manner to prevent the product from absorbing moisture and affecting the quality.

2.3 Key Factors Affecting Engineering Plastics Twin-Screw Extrusion Effect

The effect of twin-screw extrusion directly affects the quality and performance of engineering plastic products. There are many factors affecting the extrusion effect, mainly including raw material characteristics, formula ratio, premixing effect, extrusion parameters and die head structure. Mastering these key factors and making scientific adjustments can ensure the stability of the extrusion effect and the consistency of product quality.

2.3.1 Raw Material Characteristics

The type, particle size, moisture content and purity of raw materials have a great impact on the extrusion effect. Mwachitsanzo, the particle size of engineering plastic resin and modifiers should be uniform; if the particle size is uneven, it will lead to uneven melting and mixing of materials. The moisture content of raw materials must be strictly controlled below 0.1%-0.2%; if the moisture content is too high, it will cause hydrolytic degradation of the material and bubbles in the product. The purity of raw materials is also very important; impurities in raw materials (such as metals, stones, dust) will not only affect the product quality, but also wear the screw and barrel of the extruder, and even cause equipment blockage.

2.3.2 Formula Ratio

The formula ratio of engineering plastic compounds (the ratio of resin, modifiers and additives) is the key to determining the performance of the product. Mtundu ndi mlingo wa zosintha ziyenera kutsimikiziridwa molingana ndi zofunikira pakuchita kwa chinthucho. Mwachitsanzo, kuwonjezera 20%-40% Ulusi wagalasi kupita ku PA ukhoza kupititsa patsogolo mphamvu zake komanso kukhazikika kwake, koma ulusi wochuluka wagalasi umachepetsa kulimba ndi kukonza fluidity ya mankhwalawa. Mtundu ndi mlingo wa zowonjezera ziyeneranso kufananizidwa bwino: ma comptibilizer amatha kupititsa patsogolo kuyanjana pakati pa zosintha ndi utomoni, ndipo mlingo wake ndi wochuluka 0.5%-2%; mafuta amatha kuchepetsa mkangano pakati pa zida ndi zida, kusintha processing fluidity, ndipo mlingo wake ndi wochuluka 0.3%-1%; ma antioxidants amatha kuletsa zinthuzo kuti zisawonongeke chifukwa cha kuwonongeka kwa okosijeni panthawi yokonza, ndipo mlingo wake ndi wochuluka 0.1%-0.5%.

2.3.3 Premixing Mmene

Premixing ndiye maziko a extrusion processing. The uniformity of premixing directly affects the mixing and dispersing effect of modifiers during extrusion. If the premixing is uneven, the modifiers cannot be uniformly adhered to the surface of the resin, resulting in local agglomeration of modifiers, uneven mixing of materials during extrusion, and reduced product performance. To ensure the premixing effect, it is necessary to control the mixing speed, mixing time and mixing temperature: the mixing speed is 800-1200 rpm pa, the mixing time is 5-10 minutes, and the mixing temperature is controlled at 40-60℃ (appropriate temperature can improve the adhesion of additives and promote uniform mixing).

2.3.4 Extrusion Parameters

Extrusion parameters are the most important factors affecting the extrusion effect, mainly including screw speed, extrusion temperature and extrusion pressure.

• Screw Speed: Kuthamanga kwa screw wa ma twin-screw extruder a mapulasitiki auinjiniya nthawi zambiri kumachokera 100 ku 1000 rpm pa. HTS wathu mndandanda extruders akhoza kufika pa liwiro pazipita 1000 rpm pa. Kukwera kwa wononga liwiro, mphamvu yometa ubweya wambiri ndi mphamvu yakulimbana yomwe imalandiridwa ndi zipangizo, ndi bwino kusakaniza ndi kusokoneza zotsatira za zosintha, ndi kukwezera kupanga bwino. Komabe, ngati wononga liwiro kwambiri, nthawi yokhalamo zipangizo mu extrusion patsekeke ndi lalifupi kwambiri, kuchititsa kusungunuka kosakwanira kwa utomoni, osakwanira kusakaniza zipangizo, ndi khalidwe lazinthu zosagwirizana; ngati screw speed ndi yotsika kwambiri, mphamvu yometa ubweya ndi kukangana sikukwanira, zosintha sizingathe kumwazikana, ndipo kupanga bwino kumakhala kochepa. Kuthamanga kwa screw kuyenera kusinthidwa molingana ndi mtundu wa pulasitiki ya engineering ndi mtundu wa modifier: kwa mapulasitiki opangira makina apamwamba kwambiri (monga PPS, PEEK), liwiro lotsika wononga limafunika kuonetsetsa kusungunuka kokwanira ndi kusakaniza; kwa mapulasitiki olimbikitsa mainjiniya (such as glass fiber reinforced PA), Kuthamanga kwa wononga kwapamwamba kumafunika kuwonetsetsa kufalikira kwa yunifolomu ya galasi fiber.
• Kutentha kwa Extrusion: Kutentha kwa extrusion ndiye chinsinsi chowonetsetsa kusungunuka ndi pulasitiki ya mapulasitiki aumisiri. Kutentha kwa gawo lililonse la mbiya ndi mutu wakufa kuyenera kuyendetsedwa bwino molingana ndi mtundu wa pulasitiki. Kutentha kwa gawo lodyetserako ndikotsika (okwera pang'ono kuposa kuyanika kutentha kwa zipangizo), zomwe makamaka kuteteza zipangizo kuti caking ndi kuonetsetsa kudya bwino; kutentha kwa gawo losungunuka ndilopakati, zomwe makamaka kulimbikitsa kusungunuka ndi plasticization wa utomoni; kutentha kwa gawo losakaniza ndilokwera kwambiri, zomwe makamaka kumapangitsanso kukameta ubweya ndi kusakaniza zotsatira, ndikulimbikitsa kufalikira kwa yunifolomu kwa zosintha; kutentha kwa gawo la homogenizing kumakhala kotsika pang'ono kuposa gawo losakanikirana, zomwe makamaka kuonetsetsa kutentha yunifolomu ndi mamasukidwe akayendedwe a zipangizo, ndi kupewa kuwonongeka kwa kutentha; kutentha kwa mutu kufa gawo ndi pang'ono m'munsi kuposa gawo homogenizing, zomwe ndikuwonetsetsa kuti zinthu zomwe zatha. Kuwongolera kutentha kuyenera kufika ± 1 ℃ kupewa kutenthedwa kwapanyumba komanso kuwonongeka kwazinthu..
• Extrusion Pressure: The extrusion pressure of engineering plastics twin-screw extrusion zambiri zimayambira 5 ku 15MPa. Kupanikizika mu extrusion patsekeke makamaka anatsimikiza ndi psinjika chiŵerengero cha wononga, kukula kwa bowo ndi liwiro la screw. Kukwera kwamphamvu kwa extrusion, bwino kusanganikirana ndi dispersing zotsatira za zipangizo, ndi thirakiti mankhwala. Komabe, ngati kupanikizika kuli kwakukulu, zidzawonjezera kugwiritsa ntchito mphamvu ndi kuvala kwa zida, ndipo ngakhale kuchititsa mutu wa imfa kutsekereza; ngati kuthamanga kuli kochepa kwambiri, zipangizo sangathe wothinikizidwa kwathunthu ndi kusakaniza, mankhwala ndi otayirira, ndipo machitidwe ake ndi osakhazikika. Kuthamanga kwa extrusion kuyenera kusinthidwa molingana ndi mtundu wa pulasitiki waumisiri ndi mawonekedwe a chinthucho: kwa zipangizo zapamwamba-makamaka ndi mankhwala ndi mabowo ang'onoang'ono kufa, kupanikizika kwakukulu kwa extrusion kumafunika.

2.3.5 Kufa Mutu Kapangidwe

Kufa mutu kapangidwe makamaka kumaphatikizapo mawonekedwe, kukula ndi kuchuluka kwa mabowo amafa, zomwe zimakhudza mwachindunji mawonekedwe a mapangidwe ndi khalidwe la mankhwala. Kwa kupanga engineering pulasitiki mankhwala (granules), mutu wakufa uyenera kukhala ndi mabowo angapo akufa, ndipo kukula kwa mabowo akufa kuyenera kufananizidwa ndi kukula kwa tinthu; kupanga mapaipi ndi mapepala, mutu wakufa uyenera kupangidwa molingana ndi mawonekedwe ndi kukula kwa mankhwala, ndi njira yotaya mutu wa mutu wakufayo iyenera kukhala yosalala kuti ipewe kudzikundikira zinthu komanso kutenthedwa m'deralo. Mutu wakufa uyeneranso kukhala ndi chipangizo chowongolera kutentha kuti chitsimikizire kutentha kwa yunifolomu ya mutu wakufa komanso mawonekedwe okhazikika a mankhwalawa..

3. Wathu HTS Series Extruders: Professional Solutions for Engineering Plastics Processing

We have long been engaged in the research, development and production of high-performance twin-screw extruders, and have accumulated rich experience in the field of engineering plastics processing. According to the processing characteristics of engineering plastics (sensitivity to overheating and hydrolytic degradation, high requirements on mixing and dispersing effect, high viscosity) and application needs, we have developed the HTS series twin-screw extruders specially for engineering plastics processing. Our HTS series extruders adopt high-torque gearboxes, with a specific torque of 14Nm/cm³ and a maximum speed of up to 1000rpm, which can obtain higher output, shorter residence time, better dispersibility and more precise temperature control, kutengera bwino zosowa za mapulasitiki osiyanasiyana aumisiri.

3.1 Ubwino Wachikulu wa HTS Series Extruders for Engineering Plastics Processing

3.1.1 High Torque ndi High Speed, Kuchita Bwino Kwambiri

Mapulasitiki a uinjiniya ali ndi kukhuthala kwakukulu komanso kusayenda bwino kwamadzi, zomwe zimafuna kuti extruder ikhale ndi torque yamphamvu komanso mphamvu yotumizira. Ma HTS athu amtundu wa extruder amatengera ma gearbox apamwamba kwambiri opangidwa ndi ife (HTS PLUS mndandanda ndi HTS SUPER mndandanda) kapena kutumizidwa kuchokera kwa opanga otsogola ku Europe (Mndandanda wa HTS BASIC), ndi torque inayake ya 14Nm/cm³, zomwe ndi zapamwamba kwambiri kuposa wamba mapasa-screw extruders (makokedwe wamba ndi 8-12Nm/cm³). Mapangidwe apamwamba a torque amatsimikizira kuti extruder imatha kutulutsa zida zapulasitiki zamakina apamwamba kwambiri, pewani kudzikundikira zinthu komanso kutsekeka kwa zida, ndikuwongolera kukhazikika kwa njira ya extrusion.

Nthawi yomweyo, ndi HTS mndandanda extruders ndi mkulu liwiro mapangidwe, ndi liwiro pazipita mpaka 1000rpm. Kuthamanga kwakukulu kungapangitse mphamvu yamphamvu yometa ubweya ndi kusakaniza mphamvu, which can fully break the agglomerates of modifiers, pangani ma modifiers omwazika mofanana mu matrix a utomoni, ndi kusintha kusakaniza ndi dispersing zotsatira. Kuphatikiza apo, mamangidwe othamanga kwambiri amathandizanso kwambiri kupanga bwino: poyerekeza ndi extruders wamba, dzuwa kupanga HTS mndandanda extruders akhoza ziwonjezeke ndi 30%-50%, zomwe zimatha kukwaniritsa zofunikira zazikulu zopanga mabizinesi apulasitiki a engineering.

3.1.2 Nthawi Yaifupi Yokhala, Kupewa Moyenera Kuwonongeka kwa Matenthedwe

Monga mapulasitiki aumisiri amakhudzidwa ndi kutentha kwambiri komanso kuwonongeka kwa hydrolytic, nthawi yokhalamo zinthu mu extruder n'kofunika. Our HTS series extruders adopt an optimized screw structure and barrel design, with a short residence time of only 1-3 minutes, which is much shorter than that of ordinary twin-screw extruders (5-10 minutes) and single-screw extruders (10-15 minutes). The short residence time can effectively reduce the contact time between the material and high temperature, avoid thermal decomposition and hydrolytic degradation of the material, and ensure the mechanical properties and heat resistance of the product.

Kuphatikiza apo, the screw of the HTS series extruders adopts a modular design, and different screw elements can be freely combined according to the type of engineering plastic, which can further adjust the residence time of the material, ensuring that different types of engineering plastics can obtain the optimal residence time during processing.

3.1.3 Precise Temperature Control, Magwiridwe Okhazikika

The HTS mndandanda extruders kutengera patsogolo wanzeru dongosolo kutentha kulamulira, zomwe zimatha kuzindikira kuwongolera bwino kwa kutentha kwa gawo lililonse la mbiya ndi mutu wakufa. Kuwongolera kutentha kumatha kufika ± 1 ℃, which can strictly control the processing temperature within the optimal range of engineering plastics, pewani kutenthedwa m'deralo ndi kuwonongeka kwa zinthu. Dongosolo lowongolera kutentha lili ndi nthawi yeniyeni yowunika ndi ntchito ya alamu: ngati kutentha kwa gawo lililonse kumaposa malire oikidwa, dongosolo lidzapereka alamu mwamsanga mu nthawi, komanso ngakhale kusintha mphamvu Kutentha kapena kutseka zida ngati kuli kofunikira, kupewa kulephera kwa zida ndi zovuta zamtundu wazinthu.

Kuphatikiza apo, mbiya ya HTS mndandanda extruders utenga awiri wosanjikiza jekete kapangidwe, zomwe zimatha kuzindikira kutentha ndi kuziziritsa mwachangu, ndikuwongolera liwiro la kuyankha kwa kutentha. Mutu wakufa ulinso ndi chipangizo chodziyimira pawokha chowongolera kutentha, zomwe zimatsimikizira kutentha kwa yunifolomu ya mutu wa kufa ndi kukhazikika kokhazikika kwa mankhwalawa.

3.1.4 Kusakaniza Kwabwino Kwambiri ndi Kubalalitsa Zotsatira

The HTS series extruders imatenga intermeshing co-rotating twin-screw structure, ndi phula lomveka bwino, kutsogolera ndi compression ratio kupanga. Kulumikizana ndi kuzungulira kwa zomangira zamapasa kumatha kupanga mphamvu yamphamvu yometa ubweya ndi mphamvu yokanda, which can fully break the agglomerates of modifiers (such as glass fiber, carbon fiber, talc), kupanga zosinthazo zimabalalitsidwa mofanana mu engineering pulasitiki resin matrix, and ensure the mixing and dispersing effect. The kusakaniza kufanana kwa HTS mndandanda extruders akhoza kufika kuposa 95%, zomwe ndi zapamwamba kwambiri kuposa wamba mapasa-screw extruders (85%-90%).

Zowononga za mndandanda wa HTS extruders zimatenga kamangidwe kake, ndi mitundu yosiyanasiyana ya screw elements (such as conveying elements, mixing elements, shearing elements) can be freely combined according to the type of engineering plastic and modifier. Mwachitsanzo, when processing reinforced engineering plastics with glass fiber, more shearing elements can be configured to enhance the shearing effect and ensure the uniform dispersion of glass fiber; when processing engineering plastics with high viscosity (monga PPS), more mixing elements can be configured to improve the mixing effect and ensure the uniform viscosity of the material.

3.1.5 High Wear Resistance, Long Service Life

In the processing of reinforced engineering plastics (such as glass fiber reinforced PA, carbon fiber reinforced PPS), the added modifiers have high hardness, which will cause serious wear to the screw and barrel of the extruder. Our HTS series extruders adopt high-quality wear-resistant materials and advanced manufacturing technology to ensure the wear resistance of the core components.

The screw and barrel of the HTS series extruders are made of imported wear-resistant alloy steel (such as 38CrMoAlA), ndi kulandira chithandizo cha bimetallic composite kapena chithandizo cha laser cladding. The surface hardness of the screw and barrel can reach ≥65 HRC (Mndandanda wa HTS BASIC) and ≥70 HRC (HTS PLUS mndandanda ndi HTS SUPER mndandanda), which has extremely strong wear resistance and corrosion resistance, and can effectively resist the wear caused by high-hardness modifiers. This greatly extends the service life of the screw and barrel: the service life of the screw and barrel of the HTS series extruders is 2-3 times that of ordinary extruders, reducing the frequency of component replacement and the maintenance cost of the equipment.

Kuphatikiza apo, we also provide professional wear detection services for the screw and barrel. Our technical team will regularly detect the wear degree of the screw and barrel for customers, issue a detailed wear report, and put forward targeted replacement and maintenance suggestions, ensuring that customers only replace components when necessary, avoiding unnecessary waste.

3.1.6 Wide Application Range, Strong Flexibility

The HTS series extruders have a wide application range, which can adapt to the processing needs of various engineering plastics, including general engineering plastics (PA, PC, POM, PET, Mtengo PBT) and special engineering plastics (PPS, PEEK, PSU, PES). The extruders can also adapt to the processing of various modified engineering plastics, such as reinforced engineering plastics (glass fiber reinforced, carbon fiber reinforced), toughened engineering plastics, flame-retardant engineering plastics, antistatic engineering plastics, ndi zina.

The modular design of the HTS series extruders (screw, barrel, die head, etc.) makes the replacement of components more convenient and quick. When customers need to adjust the product type (such as switching from PA processing to PPS processing) or modify the formula, they only need to replace the corresponding components, without replacing the entire equipment, which reduces the cost of equipment transformation and improves the flexibility and adaptability of the equipment. Kuphatikiza apo, the HTS series extruders can also be matched with different auxiliary equipment (such as high-speed mixers, dryers, coolers, granulators, screening machines, packaging machines) to form a complete automatic production line, realizing continuous production from raw material pretreatment to product packaging.

3.1.7 Intelligent Control, Easy Operation and Maintenance

The HTS series extruders adopt a PLC intelligent control system and a touch screen operation interface, which is simple and intuitive, easy to operate. Dongosololi limatha kusunga ma seti angapo amitundu yazogulitsa ndi magawo opangira. Pamene makasitomala amapanga mitundu yosiyanasiyana ya mapulasitiki a uinjiniya, amangofunika kutchula chilinganizo chofananira ndi magawo, popanda kubwerezabwereza, zomwe zimapulumutsa nthawi komanso zimapangitsa kuti ntchito zitheke.

Dongosololi lilinso ndi ntchito yowunikira nthawi yeniyeni, amene angathe kuwunika magawo kiyi wa ndondomeko extrusion (monga kutentha, pressure, screw liwiro, kudyetsa liwiro) mu nthawi yeniyeni, ndi kulemba deta yopanga (monga zotuluka, processing nthawi) kwa funso ndi kusanthula pambuyo pake. Kwa HTS SUPER mndandanda extruders, timaperekanso ntchito yolamulira mtambo, zomwe zimatha kuzindikira kusintha kwakutali, kuwunika kwa data yopanga ndi kukonza zolosera za zida, kuzindikira kasamalidwe kopanga mwanzeru.

Kuphatikiza apo, The HTS mndandanda extruders amatengera wololera kapangidwe kamangidwe, zomwe zimapangitsa kukonza kukhala kosavuta. Zowononga, barrel, mutu kufa ndi zigawo zina akhoza disassembled ndi anasonkhana mwamsanga, zomwe zimachepetsa nthawi yokonza ndi mphamvu ya ntchito. Gulu lathu lautumiki pambuyo pa malonda lidzapereka unsembe wa akatswiri, kutumiza ndi kuphunzitsa ntchito kwa makasitomala, kuwonetsetsa kuti makasitomala atha kugwiritsa ntchito zida bwino.

3.2 Mitundu ya HTS Series Extruder Product ndi Kusintha Kwawo ku Engineering Plastics

Kuti akwaniritse zosowa zosiyanasiyana zamakampani opanga mapulasitiki amiyeso yosiyanasiyana ndi mitundu yazogulitsa, takhazikitsa mitundu itatu yayikulu yazogulitsa pa HTS: Mndandanda wa HTS BASIC, HTS PLUS mndandanda ndi HTS SUPER mndandanda. Mndandanda uliwonse uli ndi mawonekedwe ake komanso mawonekedwe omwe akuwongolera, zomwe zitha kusankhidwa ndi makasitomala malinga ndi momwe amapangira, mtundu wazinthu, bajeti ndi zinthu zina.

3.2.1 HTS BASIC Series Extruders: Kusankha Kosinthika komanso Kotsika mtengo kwa General Engineering Plastics

The HTS BASIC series extruders ndi zinthu zotsika mtengo zomwe zimapangidwira mabizinesi opangira mapulasitiki okhala ndi masikelo ang'onoang'ono kapena ang'onoang'ono opanga kapena kulowa koyamba mumakampani.. Ma extruder awa amagwiritsa ntchito ma gearbox apakati-torque ochokera kwa opanga otsogola ku Europe, zomwe zili ndi ubwino wokhazikika, phokoso lochepa, Kuchita bwino kwambiri komanso moyo wautali wautumiki. Mapangidwe apakati-torque (torque yeniyeni 10-12Nm/cm³) imatha kukwaniritsa zosowa zamapulasitiki ambiri aukadaulo (monga PA6, PA66, POM, PET, Mtengo PBT) ndi mapulasitiki osinthidwa otsika mpaka apakatikati (such as glass fiber reinforced PA with filling amount ≤30%).

In terms of structural design, the HTS BASIC series extruders adopt a twin-screw parallel co-rotating structure, with a screw diameter ranging from 30mm to 65mm, and a compression ratio of 4～8, which can be adjusted according to the type of engineering plastic. The barrel is made of wear-resistant alloy steel with nitriding treatment, and the screw is made of wear-resistant and corrosion-resistant alloy steel, which has good wear resistance. The extruder is equipped with a PLC control system and a touch screen operation interface, which can realize automatic feeding, automatic temperature control, automatic pressure control and automatic cutting, and is simple and easy to operate.

The production capacity of the HTS BASIC series extruders ranges from 100kg/h to 500kg/h, which is suitable for medium and small-sized engineering plastics processing enterprises that mainly produce general engineering plastics and low-to-medium modified engineering plastics. One of the biggest advantages of this series is that it can provide flexible options through different configuration combinations. Customers can choose different screw elements, die heads, feeding devices, drying devices and post-processing equipment according to their own product types, production capacity and budget, so as to form a production line suitable for their own needs. The HTS BASIC series extruders have a reasonable price, which can help enterprises reduce the initial investment cost.

3.2.2 HTS PLUS Series Extruders: Kusankha Kwapamwamba Kwambiri kwa Pulasitiki Zaumisiri ndi Zinthu Zosinthidwa

The HTS PLUS mndandanda extruder amatengera ma gearbox apamwamba kwambiri odzipanga okha komanso opangidwa ndi ife, ndi torque inayake ya 14Nm/cm³, yomwe ili ndi torque yamphamvu komanso yonyamula katundu kuposa mndandanda wa HTS BASIC. Izi mndandanda wa extruders makamaka lakonzedwa kuti processing wa mapulasitiki mkulu-ntchito zomangamanga, mapulasitiki apamwamba a uinjiniya ndi mapulasitiki apadera aumisiri (monga PPS), omwe ndi oyenera mabizinesi apakatikati ndi akulu akulu opangira mapulasitiki omwe amatsata magwiridwe antchito apamwamba komanso kuchita bwino kwambiri.

The HTS PLUS mndandanda extruders ali ndi wononga awiri kuyambira 65mm mpaka 110mm, compression chiŵerengero cha 5 ~ 10, ndi wononga liwiro la 200 ~ 800 rpm. Zowononga ndi mbiya zimagwiritsa ntchito mankhwala a bimetallic composite, which has higher wear resistance and corrosion resistance (surface hardness ≥65 HRC), and can adapt to the processing of reinforced engineering plastics with high filling amount (such as glass fiber reinforced PA with filling amount 30%-50%, carbon fiber reinforced PPS) and high-hardness modifiers. The extruder is equipped with an advanced intelligent temperature control system and a high-precision pressure sensor, which can realize precise control of extrusion parameters and real-time monitoring of production data, ensuring the stability of the extrusion process and the quality of the product.

The production capacity of the HTS PLUS series extruders ranges from 500kg/h to 2000kg/h, which is suitable for the large-scale production of general engineering plastics, mapulasitiki apamwamba a uinjiniya ndi mapulasitiki apadera aumisiri (monga PPS). This series of extruders has excellent mixing and dispersing effect, nthawi yochepa yokhalamo komanso kupanga bwino kwambiri, zomwe zimatha kuthana ndi zovuta zogwirira ntchito zamapulasitiki apamwamba kwambiri komanso osinthika kwambiri, ndikuthandizira mabizinesi kukweza zinthu zabwino komanso kupanga bwino.

3.2.3 HTS SUPER Series Extruders: Kusankha Kwapamwamba Kwambiri kwa Pulasitiki Zaumisiri Wapamwamba

The HTS SUPER series extruders amatengera chipangizo chaposachedwa kwambiri cha torque chopangidwa ndi ife., with a specific torque of 14Nm/cm³ and a maximum speed of up to 1000rpm. Poganizira ma torque apamwamba komanso kuthamanga kwambiri kwa mndandanda uno, kapangidwe kamangidwe ka chigawo chilichonse kiyi wa extruder wakhala wokometsedwa kwathunthu, yomwe ndi mndandanda wathu wapamwamba kwambiri wa extruder, kuyimira mlingo wapamwamba wa chitukuko cha extruder China. Izi mndandanda wa extruders makamaka lakonzedwa kuti processing apamwamba mapeto apadera uinjiniya mapulasitiki (monga PEEK, PI, PSU, PES) and high-performance modified engineering plastics (such as carbon fiber reinforced PEEK, glass fiber reinforced PI), which is suitable for large-scale high-end engineering plastics processing enterprises that pursue high precision, high performance and intelligence.

The HTS SUPER series extruders have a screw diameter ranging from 80mm to 130mm, a compression ratio of 6～12, and a screw speed range of 250～1000 rpm. The screw and barrel adopt imported wear-resistant alloy steel and laser cladding technology, which has extremely high wear resistance and corrosion resistance (surface hardness ≥70 HRC), and can adapt to the processing of special engineering plastics with high temperature resistance, high viscosity and high-hardness modifiers. The extruder is equipped with an intelligent PLC + cloud touch screen control system, zomwe zimatha kuzindikira kusintha kwakutali, production data monitoring, predictive maintenance of equipment and data analysis, kuzindikira kasamalidwe kopanga mwanzeru.

The production capacity of the HTS SUPER series extruders ranges from 1000kg/h to 3000kg/h, which is suitable for the large-scale production of high-end special engineering plastics and high-performance modified engineering plastics. This series of extruders has the advantages of high precision, strong customization, multi-function and stable performance, which can meet the most stringent processing requirements of high-end engineering plastics. The short residence time (1-2 minutes) and precise temperature control can effectively avoid the thermal decomposition of special engineering plastics, ensuring the excellent performance of the product. Kuphatikiza apo, the HTS SUPER series extruders can also be customized according to the special processing needs of customers, providing personalized solutions.

3.3 Selection Suggestions for Engineering Plastics Extruders

When selecting twin-screw extruders for engineering plastics processing, enterprises need to comprehensively consider their own production needs, product types, processing scale, budget and other factors to ensure that the selected equipment can meet the actual processing needs and bring maximum economic benefits. The following are some specific selection suggestions:

3.3.1 Determine the Extruder Series According to the Type of Engineering Plastics

Different types of engineering plastics have different processing requirements, which determine the selection of extruder series. For general engineering plastics (PA6, PA66, POM, PET, Mtengo PBT) with low modification degree (filling amount ≤30%), the HTS BASIC series is sufficient to meet the processing needs. Its medium torque and flexible configuration can balance processing effect and cost, which is very suitable for small and medium-sized enterprises that just start to engage in engineering plastics processing or focus on general-purpose products. For high-modified engineering plastics (filling amount 30%-50%, such as glass fiber reinforced PA, carbon fiber reinforced PBT) and special engineering plastics with moderate processing difficulty (monga PPS), the HTS PLUS series is the preferred choice. Its high torque of 14Nm/cm³ and excellent mixing and dispersing capacity can effectively solve the problem of uneven dispersion of high-content modifiers, and its wear-resistant screw and barrel can adapt to the wear of hard modifiers, ensuring stable production. For high-end special engineering plastics (PEEK, PI, PSU, PES) and high-performance modified engineering plastics (filling amount ≥50%, such as carbon fiber reinforced PEEK), the HTS SUPER series must be selected. Its ultra-high torque, maximum 1000rpm speed and fully optimized key structure can cope with the high viscosity, high temperature resistance and strict processing requirements of high-end materials, avoid thermal decomposition and material degradation, and ensure the high performance of the final product.

3.3.2 Determine the Screw Diameter and Production Capacity According to the Processing Scale

The screw diameter of the twin-screw extruder directly determines the production capacity, and enterprises need to select the appropriate screw diameter according to their own production scale and order demand. For small-scale production (100kg/h – 500kg/h), such as small-batch customization, product research and development or small orders, the HTS BASIC series with screw diameter of 30mm – 65mm is suitable; for medium-scale production (500kg/h – 2000kg/h), such as mass production of general modified engineering plastics, the HTS PLUS series with screw diameter of 65mm – 110mm can meet the demand; for large-scale production (1000kg/h – 3000kg/h), such as large-scale production of high-end special engineering plastics or large orders from downstream enterprises, the HTS SUPER series with screw diameter of 80mm – 130mm is the best choice. It should be noted that when selecting, enterprises should not blindly pursue large production capacity. They should also consider the fluctuation of order quantity. If the order quantity is unstable, they can choose equipment with adjustable speed and flexible production capacity (such as HTS BASIC series with frequency conversion speed regulation function) kupewa kuwononga zida chuma ndi mphamvu.

3.3.3 Ganizirani za Kufuna Kusintha ndi Kusakaniza Zotsatira

Ngati zinthu zazikulu zamabizinesi ndi mapulasitiki osinthidwa aumisiri, kusanganikirana ndi dispersing zotsatira za extruder ndi chinthu chofunika kuganiziridwa. Kwa zinthu zomwe zimafunikira kuwonjezera zosintha zosiyanasiyana (monga zoletsa moto, compatibilizers, othandizira othandizira) at the same time, m'pofunika kusankha extruders ndi ntchito kusakaniza bwino, monga mndandanda wa HTS PLUS ndi mndandanda wa HTS SUPER wokhala ndi ma modular mixing screw elements. Mitundu iwiriyi imatha kuphatikiza zinthu zotumizira momasuka, kusakaniza zinthu ndi kumeta ubweya malinga ndi mtundu wa zosintha, sinthani kusakanikirana kwamphamvu ndi nthawi yokhalamo, ndikuwonetsetsa kuti zosintha zosiyanasiyana zimabalalika mofanana mu matrix a utomoni. Mwachitsanzo, pokonza PBT yosinthidwa ndi flame-retardant, more mixing elements can be configured to ensure the uniform dispersion of flame retardants, avoid local flame retardancy insufficiency; when processing glass fiber reinforced PA, more shearing elements can be configured to break the agglomeration of glass fiber and improve the bonding force between glass fiber and resin. Kuphatikiza apo, if the enterprise has the demand of multi-variety and small-batch modification, it is recommended to select the extruder with quick replacement of screw elements (such as the modular screw design of HTS series), which can reduce the time of equipment adjustment and improve production efficiency.

3.3.4 Consider the Cost Budget and Comprehensive Benefits

Cost budget is an important factor for enterprises to select equipment, but it is not advisable to pursue low cost blindly. It is necessary to balance the initial purchase cost, later maintenance cost, energy consumption and production efficiency to maximize the comprehensive benefits. The HTS BASIC series has the lowest initial purchase cost, low energy consumption and simple maintenance, which is suitable for enterprises with limited budget and small production scale; the HTS PLUS series has a moderate initial purchase cost, but its high production efficiency, long service life and stable processing effect can reduce the later maintenance cost and improve product qualification rate, which is suitable for medium and large-sized enterprises with certain budget and pursuit of high performance; the HTS SUPER series has the highest initial purchase cost, but it can process high-end products with high added value, ndi kuwongolera kwake mwanzeru ndi moyo wautali wautumiki zitha kuchepetsa mtengo wantchito ndi mtengo wokonza m'nthawi yamtsogolo, zomwe zili zoyenera kwa mabizinesi akuluakulu okhala ndi bajeti yokwanira komanso kuyang'ana pamsika wapamwamba kwambiri. Kuphatikiza apo, mabizinesi ayeneranso kuganizira za ntchito pambuyo-kugulitsa zida. Ma extruders athu a HTS amapereka njira yathunthu yogulitsa pambuyo pogulitsa, kuphatikizapo unsembe, kutumiza, maphunziro aukadaulo, kukonza nthawi zonse ndikusintha mwachangu zida zosinthira, zomwe zingachepetse kuwonongeka kwa mabizinesi pambuyo pake.

3.3.5 Ganizirani Kugwirizana ndi Zida Zothandizira

Mawiri-screw extrusion processing a mapulasitiki aumisiri amayenera kufananizidwa ndi zida zingapo zothandizira, monga zida zowumitsa zopangira, chosakaniza chothamanga kwambiri, ozizira, granulator, makina owonera, makina onyamula, ndi zina. Posankha extruder, mabizinesi ayenera kuganizira ngakhale pakati pa extruder ndi zida zothandizira kuonetsetsa kuti mzere wonse wopanga ukuyenda bwino.. Ma extruder athu a HTS amatha kufananizidwa bwino ndi zida zosiyanasiyana zothandizira, komanso zitha kusinthidwa malinga ndi zida zothandizira zomwe zilipo kale kuti mupewe zinyalala zomwe zimayambitsidwa ndi kusagwirizana pakati pa zida zatsopano ndi zida zakale zothandizira. Mwachitsanzo, ngati bizinesiyo ili kale ndi chosakaniza chothamanga kwambiri chokhala ndi mphamvu yosakaniza ya 500kg, imatha kusankha mtundu wa HTS PLUS wotulutsa ndi mphamvu yopanga 500kg/h – 800kg/h kuti zigwirizane nazo, kuonetsetsa kugwirizana kwa zopangira premixing ndi extrusion kupanga.

4. Magawo Ogwiritsa Ntchito a Pulasitiki Zaumisiri ndi Mayankho Ofananira a HTS Series Extruder

Mapulasitiki a engineering, ndi machitidwe awo abwino kwambiri, akhala akugwiritsidwa ntchito kwambiri m'magalimoto, zamagetsi ndi zamagetsi, medical, aerospace, mankhwala, yomanga ndi minda ina. Magawo osiyanasiyana ogwiritsira ntchito ali ndi zofunikira zosiyanasiyana pakuchita zinthu zamapulasitiki zauinjiniya, amenenso amaika patsogolo zofunika zosiyanasiyana pa extrusion processing zida. M'munsimu, tidzafotokozera zambiri za mawonekedwe a ntchito zamapulasitiki aukadaulo m'magawo akuluakulu ndi mayankho ofananira a HTS mndandanda wa extruder, kupereka zidziwitso zowunikira mabizinesi m'magawo osiyanasiyana.

4.1 Munda Wamagalimoto: Wopepuka, Kukana Kutentha Kwambiri ndi Kukaniza Kuvala

Ndi chitukuko cha magalimoto opepuka komanso opulumutsa mphamvu komanso kuchepetsa umuna, mapulasitiki auinjiniya akhala chinthu chofunikira pazigawo zamagalimoto, pang'onopang'ono m'malo mwachikhalidwe zitsulo zipangizo. The engineering plastics used in the automotive field mainly include PA, POM, PC, Mtengo PBT, PPS, etc., which are mainly used in engine parts, interior parts, exterior parts and electrical components. The core requirements for extrusion processing are: lightweight, high temperature resistance, wear resistance, dimensional stability and low VOC (volatile organic compounds), which require the extruder to have precise temperature control, excellent mixing and dispersing effect and stable production capacity.

For automotive interior parts (such as instrument panels, door panels, air ducts) made of general engineering plastics (PA6, POM, PC/ABS alloy), the HTS BASIC series extruders can meet the processing needs. Its flexible configuration can adjust the processing parameters according to the performance requirements of interior parts, ensure the smooth surface and dimensional stability of the product, komanso kugwiritsa ntchito mphamvu zochepa komanso mtengo wake ukhoza kuchepetsa mtengo wopangira zida zamagalimoto. Za magawo a injini zamagalimoto (monga ma intake manifolds, zophimba mutu za silinda, masamba mafuta) zopangidwa ndi mapulasitiki a engineering osatentha kwambiri komanso osamva kuvala (PA66+GF30, PPS), zotulutsa za HTS PLUS ndizoyenera kwambiri. Ma torque ake okwera komanso kusakaniza bwino komanso kufalikira kungathe kuwonetsetsa kufalikira kwa yunifolomu ya fiber magalasi, kupititsa patsogolo mphamvu ndi kutentha kwakukulu kwa mankhwala, ndi zomangira zake zosamva kuvala ndi mbiya zimatha kuzolowera kuvala kwa ulusi wamagalasi, kuwonetsetsa kuti nthawi yayitali yokhazikika yokhazikika. Kwa zida zagalimoto zamphamvu zatsopano (monga chipolopolo cha batri, mbali zotsekera zamagalimoto) zopangidwa ndi mapulasitiki apamwamba apamwamba apamwamba (PEEK, PI), ndi HTS SUPER mndandanda extruders chofunika. Its ultra-high torque, kuwongolera bwino kutentha ndi nthawi yochepa yokhalamo kumatha kupewa kuwonongeka kwa zinthu zosagwirizana ndi kutentha kwambiri., kuonetsetsa kuti insulation ikugwira ntchito komanso kukana dzimbiri kwa chinthucho, ndikukwaniritsa zofunikira zamagalimoto amphamvu zatsopano pamagawo a magwiridwe antchito.

Nkhani Yophunzira: Wopanga zida zazikulu zamagalimoto omwe amagwiritsa ntchito zida zatsopano za batri yamagalimoto amasankha ma HTS SUPER ma extruder athu (screw awiri 100mm) kukonza zipolopolo za batri za PEEK zolimbitsa kaboni fiber. Zinthu za PEEK zimakhala ndi kukhuthala kwakukulu komanso kukana kutentha kwambiri, ndipo kuchuluka kwa kaboni fiber kumafika 40%, yomwe ili ndi zofunikira kwambiri pazida za extrusion. The HTS SUPER mndandanda extruders, ndi makokedwe awo okwera kwambiri a 14Nm/cm³ ndi liwiro lalikulu la 1000rpm, kupanga mphamvu yamphamvu yometa ubweya ndi kusakaniza mphamvu, which makes the carbon fiber uniformly dispersed in the PEEK matrix; the precise temperature control system (precision ±1℃) strictly controls the processing temperature at 380-400℃, avoiding thermal decomposition of PEEK; the short residence time (1.5 minutes) effectively reduces the material degradation, ensuring the strength and insulation performance of the battery shell. After using the HTS SUPER series extruders, the production efficiency of the enterprise is increased by 40%, the product qualification rate is increased from 88% ku 99%, and the production cost is reduced by 15%, which has won high recognition from the enterprise.

4.2 Electrical and Electronic Field: Electrical Insulation, Flame Retardancy and Dimensional Stability

The electrical and electronic field is one of the earliest and most widely used fields of engineering plastics. Mapulasitiki aumisiri amagwiritsidwa ntchito makamaka pazolumikizira zamagetsi, wiring boards, maulendo, magalimoto, ma cable, zophimba nyali ndi zigawo zina. The core requirements for extrusion processing are: zabwino kwambiri zotsekera magetsi, kuchedwa kwa moto, kukhazikika kwa dimensional, kukana dzimbiri ndi kawopsedwe kochepa, which require the extruder to have precise temperature control, kusanganikirana bwino ndi dispersing zotsatira ndi okhwima khalidwe mphamvu mphamvu.

Kwa zigawo zonse zamagetsi (monga zomangira zingwe, zolumikizira) made of general engineering plastics (PA6, Mtengo PBT, PC), The HTS BASIC mndandanda extruders ndi oyenera. Kusintha kwake kosinthika kumatha kufananiza mitu yosiyanasiyana yakufa kuti ipange zigawo zamitundu yosiyanasiyana komanso kukula kwake; kuwongolera bwino kwa kutentha kumatsimikizira ntchito yamagetsi yamagetsi yamagetsi, ndipo mtengo wotsika ukhoza kukwaniritsa zofunikira zopanga zinthu zambiri zamagulu amagetsi. Pakuti mkulu-mwatsatanetsatane zigawo zamagetsi (monga ma relay, motere windings) zopangidwa ndi mapulasitiki osinthika osinthika osayaka moto (PBT+GF30+flame retardant, PA66+ flame retardant), the HTS PLUS series extruders are preferred. Its high mixing and dispersing effect can ensure the uniform dispersion of flame retardants, avoid local flame retardancy insufficiency, and meet the UL94 V-0 flame retardant standard; the precise dimensional control can ensure the dimensional accuracy of high-precision components, avoiding assembly failure. For high-end electrical components (such as high-temperature resistant connectors, aerospace electrical components) made of special engineering plastics (PPS, PSU, PES), ndi HTS SUPER mndandanda extruders chofunika. Its ultra-high torque and excellent wear resistance can cope with the high viscosity and high hardness of special engineering plastics, and the precise temperature control and short residence time can ensure the electrical insulation performance and high temperature resistance of the product, meeting the strict requirements of high-end electrical and electronic products.

4.3 Medical Field: Biocompatibility, Sterility and Precision

The medical field has extremely strict requirements on materials, and engineering plastics used in the medical field must have good biocompatibility, sterility, corrosion resistance and dimensional stability, and must not produce toxic and harmful substances. The main engineering plastics used in the medical field include PC, PA, PEEK, PSU, etc., which are mainly used in medical containers, medical catheters, medical implants, surgical instruments and other products. The core requirements for extrusion processing are: mwatsatanetsatane kwambiri, no pollution, stable performance, which require the extruder to have high cleanliness, precise temperature control and strict quality control capacity.

For general medical products (such as medical containers, ordinary catheters) made of medical-grade general engineering plastics (medical-grade PC, medical-grade PA), the HTS BASIC series extruders with special cleanliness configuration can meet the requirements. We can customize the screw and barrel with high cleanliness, no dead angle design for the HTS BASIC series, avoid material residue and pollution, and match the sterile feeding and packaging system to ensure the sterility of the product. For high-precision medical products (such as precision catheters, medical implants) made of medical-grade special engineering plastics (medical-grade PEEK, medical-grade PSU), the HTS SUPER series extruders with high-precision configuration are required. Its fully optimized screw structure and precise temperature control can ensure the dimensional accuracy of the product (tolerance ≤±0.01mm), and the clean production environment and no pollution design can meet the biocompatibility requirements of medical products; the cloud control function can realize real-time monitoring and recording of the production process, which is convenient for medical product traceability and meets the GMP (Good Manufacturing Practice) requirements of the medical field.

4.4 Aerospace Field: High Temperature Resistance, Low Weight and High Strength

The aerospace field has extremely high requirements on the performance of materials, and engineering plastics used in the aerospace field must have excellent high temperature resistance, low weight, high strength, corrosion resistance and radiation resistance. The main engineering plastics used in the aerospace field include PEEK, PI, PSU, PES, etc., which are mainly used in aerospace components, aircraft interior parts, satellite components and other products. The core requirements for extrusion processing are: ultra-high precision, ultra-high temperature resistance, stable performance, which require the extruder to have the highest level of torque, speed and temperature control capacity.

Due to the extremely strict processing requirements of aerospace-grade engineering plastics, only the HTS SUPER series extruders can meet the demand. Its ultra-high torque transmission device, maximum 1000rpm speed and fully optimized key components can cope with the high viscosity and high temperature resistance of aerospace-grade materials (long-term use temperature up to 300℃); the laser-clad screw and barrel have extremely high wear resistance and corrosion resistance, which can adapt to the processing of high-hardness modifiers (such as carbon fiber, ceramic fiber); the intelligent PLC + cloud touch screen control system can realize precise control of extrusion parameters, ndi kuyang'anira kutali ndi ntchito yokonzekera zodziwikiratu kungathe kuonetsetsa kuti zida zogwiritsidwa ntchito mokhazikika pakupanga nthawi yayitali; kasinthidwe kosinthika kumatha kukwaniritsa zosowa zapadera zamagulu osiyanasiyana amlengalenga, kuonetsetsa kuti ntchito yapamwamba ndi yodalirika kwambiri ya mankhwala.

4.5 Chemical Field: Kukaniza kwa Corrosion ndi Kukaniza Kuvala

Munda wa mankhwala uli ndi malo ogwirira ntchito ovuta, ndi mapulasitiki auinjiniya omwe amagwiritsidwa ntchito m'munda wamankhwala ayenera kukhala ndi kukana kwamphamvu kwa kutu, wear resistance, kutentha kwambiri kukana ndi kukana kupanikizika. Mapulasitiki akuluakulu aumisiri omwe amagwiritsidwa ntchito pazamankhwala amaphatikiza PPS, PEEK, Zithunzi za PVDF (polyvinylidene fluoride), etc., zomwe zimagwiritsidwa ntchito makamaka pazida zamankhwala, mapaipi, mavavu, mapampu ndi zinthu zina. The core requirements for extrusion processing are: kukana dzimbiri, wear resistance, stable performance, zomwe zimafuna kuti extruder ikhale ndi kukana kovala bwino komanso kukana dzimbiri, and stable pressure control capacity.

For chemical pipelines and valves made of general corrosion-resistant engineering plastics (PPS, Zithunzi za PVDF), the HTS PLUS series extruders are suitable. Its bimetallic composite screw and barrel have excellent corrosion resistance and wear resistance, which can adapt to the corrosion of chemical media and the wear of materials; the stable pressure control capacity can ensure the uniform wall thickness of pipelines and valves, avoiding leakage caused by uneven wall thickness. For high-pressure chemical equipment and corrosion-resistant components made of high-end corrosion-resistant engineering plastics (PEEK, PI), ndi HTS SUPER mndandanda extruders chofunika. Its ultra-high torque and stable conveying capacity can cope with the high viscosity of high-end corrosion-resistant materials, ndi laser-clad screw ndi mbiya imakhala ndi kukana kwa dzimbiri kwapamwamba kwambiri komanso kukana kuvala, zomwe zimatha kukwaniritsa zofunikira zogwiritsidwa ntchito kwanthawi yayitali m'malo ovuta amankhwala; kuwongolera bwino kutentha kumatha kupewa kuwonongeka kwa zinthu, kuonetsetsa kukana kwa dzimbiri ndi kukana kukakamizidwa kwa chinthucho.

5. Mavuto Wamba ndi Mayankho mu Engineering Pulasitiki Twin-Screw Extrusion Processing

Mu zenizeni amapasa-screw extrusion processing wa mapulasitiki zomangamanga, chifukwa cha mphamvu ya zipangizo, processing magawo, zida ntchito ndi zinthu zina, zovuta zosiyanasiyana zimachitika nthawi zambiri, zomwe zimakhudza khalidwe la mankhwala ndi kupanga bwino. M'munsimu, tidzafotokozera mwachidule mavuto omwe amapezeka mu engineering mapulasitiki extrusion processing, pendani zifukwa zawo, ndi kupereka mayankho lolingana pamodzi ndi makhalidwe athu HTS mndandanda extruders, kuthandiza mabizinesi kuthana ndi zovuta zogwirira ntchito ndikuwongolera magwiridwe antchito.

5.1 Vuto 1: Kuwola kwa Matenthedwe ndi Kusintha kwa Zinthu

Zizindikiro: Pa extrusion ndondomeko, zinthu zikuwoneka zachikasu, kuda, carbonization ndi zochitika zina, ndipo chomaliza chimakhala ndi mtundu, thovu, ming'alu ndi zolakwika zina, ndipo katundu wamakina amachepetsedwa kwambiri. Vutoli limayamba makamaka chifukwa cha kukhudzidwa kwa mapulasitiki aukadaulo pakuwotcha komanso kuwonongeka kwa hydrolytic.

Zoyambitsa: 1. Kutentha kwa extrusion ndikokwera kwambiri kapena kutentha kwa gawo lina la mbiya ndikokwera kwambiri, kuchititsa kuwonongeka kwa kutentha kwa zinthuzo; 2. Nthawi yokhala zinthu mu extruder ndi yaitali kwambiri, kumabweretsa kutentha kwambiri ndi kuwonongeka; 3. Zopangira siziuma bwino, ndi chinyezi muzinthu zimayambitsa kuwonongeka kwa hydrolytic panthawi yotentha kwambiri; 4. Liwiro la screw ndilotsika kwambiri, zomwe zimapangitsa kuti pakhale mphamvu yometa ubweya wokwanira komanso kukhala ndi nthawi yayitali; 5. Njira yoyendera ya mutu wa imfa yatsekedwa, kuchititsa kudzikundikira zinthu ndi kutenthedwa m'deralo.

Zothetsera: 1. Sinthani kutentha kwa extrusion molingana ndi mtundu wa pulasitiki waukadaulo, mosamalitsa kulamulira kutentha kwa gawo lililonse la mbiya ndi kufa mutu mkati mulingo woyenera kwambiri, ndi ntchito yeniyeni kutentha ntchito ya HTS mndandanda extruders (Kuwongolera kutentha molondola ± 1 ℃) kupewa kutenthedwa m'deralo; 2. Wonjezerani liwiro la screw moyenera (m'kati mwazoyenera zinthuzo) kufupikitsa nthawi yokhalamo zinthu. The HTS mndandanda extruders akhoza kufika pa liwiro pazipita 1000rpm, zomwe zingathe kufupikitsa nthawi yokhalamo kuti 1-3 minutes; 3. Limbikitsani kuyanika mankhwala a zipangizo, yesetsani kuwongolera chinyezi m'munsimu 0.1%-0.2%, ndikugwiritsa ntchito chipangizo chowumitsa chofananira ndi ma HTS mndandanda wa extruders kuti mupewe zopangira kuti zisatengerenso chinyezi pakudya.; 4. Yang'anani ndikuyeretsa mutu wakufa nthawi zonse kuti muwonetsetse kuti njira yoyenda bwino, pewani kudzikundikira zinthu; 5. Ngati vutoli likupitirirabe, sinthani chophatikizira cha screw element, kuwonjezera kuchuluka kwa zinthu zotumizira, ndi kuchepetsa kuchuluka kwa zinthu zosakaniza kuti zifulumizitse zinthu zomwe zimaperekedwa ndikufupikitsa nthawi yokhalamo.

5.2 Vuto 2: Kubalalika Kosiyana kwa Zosintha

Zizindikiro: Chomalizacho chimakhala ndi mawonekedwe osagwirizana, kuphatikizika kowonekera kwa ma modifiers (such as glass fiber, carbon fiber), and the mechanical properties (mphamvu, kulimba, wear resistance) are uneven, which cannot meet the use requirements. This problem is common in the processing of modified engineering plastics.

Zoyambitsa: 1. The premixing effect of raw materials is poor, and the modifiers are not uniformly adhered to the surface of the resin; 2. Liwiro la screw ndilotsika kwambiri, resulting in insufficient shear force and kneading force, and the modifiers cannot be fully broken and dispersed; 3. The combination of screw elements is unreasonable, and the number of mixing elements and shearing elements is insufficient; 4. The extrusion temperature is too low, the material is not fully melted, and the modifiers cannot be uniformly dispersed in the resin matrix; 5. The particle size of the modifier is too large or uneven.

Zothetsera: 1. Optimize the premixing process, increase the mixing speed (800-1200rpm pa) and mixing time (5-10 minutes), add an appropriate amount of compatibilizer to improve the compatibility between the modifier and the resin, and use a high-speed mixer matched with the HTS series extruders to ensure uniform premixing; 2. Wonjezerani liwiro la screw moyenera, use the high-speed performance of the HTS series extruders to generate strong shear force and kneading force, and fully break the agglomerates of modifiers; 3. Adjust the combination of screw elements, increase the number of mixing elements and shearing elements, and use the modular screw design of the HTS series extruders to customize the optimal screw combination according to the type of modifier; 4. Properly increase the extrusion temperature to ensure that the material is fully melted, which is conducive to the uniform dispersion of modifiers; 5. Gwirani ndi sieve chosinthira kuti muwonetsetse kuti kukula kwake ndi kofanana (20-40 mesh) ndipo amakwaniritsa zofunika processing.

5.3 Vuto 3: Kuvala Screw ndi Barrel

Zizindikiro: Pambuyo pa nthawi yogwiritsira ntchito, mphamvu ya extruder ya extruder imachepa, mphamvu yometa ubweya ndi kusakaniza kumachepetsa, khalidwe la mankhwala ndi losakhazikika, ndipo ngakhale zomangira ndi mbiya zimakakamira. Vutoli makamaka limayamba chifukwa cha kuvala kwa zosintha zolimba kwambiri (such as glass fiber, carbon fiber) pa wononga ndi mbiya pokonza analimbitsa mainjiniya mapulasitiki.

Zoyambitsa: 1. Zomangira ndi mbiya zimapangidwa ndi zinthu zomwe sizimavala bwino, zomwe sizingatsutse kuvala kwa zosintha zolimba kwambiri; 2. Kuchuluka kodzaza kwa chosinthira ndikokwera kwambiri (≥50%), ndipo mavalidwe amakula; 3. Kukula kwa tinthu kosinthira ndikokulira kwambiri, zomwe zimawonjezera kuwonongeka kwa phula ndi mbiya; 4. The extrusion pressure is too high, which increases the friction between the material and the screw and barrel; 5. The screw and barrel are not maintained regularly, and the material residue accelerates the wear.

Zothetsera: 1. Select extruders with high wear resistance, such as HTS PLUS series and HTS SUPER series. Their screws and barrels are made of imported wear-resistant alloy steel and undergo bimetallic composite treatment or laser cladding treatment, with surface hardness ≥65 HRC (HTS PLUS) and ≥70 HRC (HTS SUPER), which can effectively resist the wear of high-hardness modifiers; 2. Control the filling amount of the modifier within a reasonable range. If high filling amount is required, select the HTS SUPER series extruders with better wear resistance; 3. Crush and sieve the modifier to reduce its particle size and reduce wear; 4. Adjust the extrusion parameters to control the extrusion pressure within the optimal range (5-15MPa), avoid excessive pressure; 5. Regularly maintain the screw and barrel, clean the material residue in time, and apply lubricating oil appropriately to reduce friction and extend the service life. Kuphatikiza apo, our professional technical team can provide regular wear detection services for the screw and barrel, and put forward targeted replacement and maintenance suggestions.

5.4 Vuto 4: Unstable Product Size and Dimensional Deformation

Zizindikiro: The size of the extruded product (such as granules, pipes, sheets) is uneven, the shrinkage rate exceeds the standard (＞1.5%), and the product has deformation, warpage and other phenomena, which affects the assembly and use of the product.

Zoyambitsa: 1. The extrusion temperature is unstable, resulting in uneven melting and plasticization of the material, and uneven shrinkage during cooling; 2. The extrusion speed is unstable, kumabweretsa kuchuluka kwa extrusion yosagwirizana komanso kukula kosakhazikika kwazinthu; 3. Liwiro lozizira silili lofanana, kumabweretsa kupsinjika kwamkati ndi kunja kwa chinthucho, kutsogolera ku deformation; 4. Mapangidwe a mutu wakufa ndi osamveka, njira yotuluka si yosalala, ndipo kuyenda kwa zinthu sikufanana; 5. Zopangira zimakhala ndi mayamwidwe apamwamba amadzi, ndipo chinyonthocho chimayambitsa kuchepa kosagwirizana pakukonza.

Zothetsera: 1. Ntchito yeniyeni kutentha kulamulira dongosolo la HTS mndandanda extruders kuonetsetsa bata la kutentha extrusion, ndi kupewa kusinthasintha kwa kutentha; 2. Kusintha liwiro kudya ndi wononga liwiro kuonetsetsa bata la liwiro extrusion, ndikugwiritsa ntchito pafupipafupi kutembenuka kwa liwiro la kayendetsedwe ka HTS mndandanda wa extruders kuti muzindikire kusintha kosinthika kwa kudyetsa ndi kutulutsa.; 3. Konzani ndondomeko yozizira, kuonetsetsa yunifolomu kuzirala liwiro, sinthani kutentha kwa madzi ozizira (20-30℃) ndi nthawi yozizira (2-5 minutes) kwa kuziziritsa kwa mizere, ndi kugwiritsa ntchito kuzirala kwa mpweya kapena kupopera madzi m'mapaipi ndi mapepala kuti musazizire mosiyanasiyana; 4. Yang'anani ndi kukhathamiritsa kapangidwe ka mutu wa die, onetsetsani njira yoyenda bwino, ndi kusintha kutentha mutu kufa kuonetsetsa yunifolomu zinthu kuyenda; 5. Limbikitsani kuyanika mankhwala a zipangizo, mosamalitsa kuwongolera chinyezi, ndi kuchepetsa mphamvu ya chinyezi pa kuchepa kwa mankhwala.

5.5 Vuto 5: Kugwiritsa Ntchito Mwachangu Kwambiri komanso Kugwiritsa Ntchito Mphamvu Kwambiri

Zizindikiro: Mphamvu yopanga extruder ndi yotsika kuposa kapangidwe kake, kugwiritsa ntchito mphamvu pamtundu uliwonse ndikokwera, ndipo mtengo wopanga ukuwonjezeka, zomwe zimakhudza phindu lazachuma la bizinesi.

Zoyambitsa: 1. Liwiro la screw ndilotsika kwambiri, mphamvu yotumizira ndi yosakwanira; 2. The extrusion temperature is too low, kukhuthala kwa zinthu ndizokwera kwambiri, kukana kupereka kumawonjezeka, ndipo mphamvu zopangira zimachepa; 3. The combination of screw elements is unreasonable, mphamvu yotumizira ndi yochepa; 4. Chipangizo chodyetserako chatsekedwa kapena liwiro la kudyetsa silikwanira, kumabweretsa kusadya mokwanira; 5. Chitsulo ndi mbiya zavala, mphamvu yotumizira imachepetsedwa, ndipo kugwiritsa ntchito mphamvu kumawonjezeka.

Zothetsera: 1. Wonjezerani liwiro la screw moyenera (m'kati mwazoyenera zinthuzo) kupititsa patsogolo luso la kutumiza ndi kupanga bwino. The HTS mndandanda extruders akhoza kufika pa liwiro pazipita 1000rpm, zomwe zingasinthire kwambiri kupanga bwino; 2. Moyenera kuonjezera extrusion kutentha kuchepetsa zinthu mamasukidwe akayendedwe, kuchepetsa kukana kutumiza, ndi kupititsa patsogolo luso la kutumiza; 3. Adjust the combination of screw elements, kuwonjezera kuchuluka kwa zinthu zotumizira, onjezerani chiwongolero cha screw lead ndi compression ratio, ndi kupititsa patsogolo luso la kutumiza. Mapangidwe a screw modular a HTS series extruders amatha kuzindikira kusintha kwachangu kwa screw elements; 4. Yang'anani ndikuyeretsa chipangizo chodyera nthawi zonse, kuonetsetsa kudyetsa kosalala, ndikusintha liwiro lodyetsa kuti lifanane ndi liwiro la wononga, pewani kudyetsa kosakwanira; 5. Nthawi zonse zindikirani kuchuluka kwa wononga ndi mbiya, sinthani zinthu zomwe zidawonongeka munthawi yake, ndi kusunga mphamvu yotumizira ya extruder, kuchepetsa kugwiritsa ntchito mphamvu. Kuphatikiza apo, The HTS mndandanda extruders amatengera wokometsedwa kamangidwe kamangidwe ndi mkulu-mwachangu galimoto, zomwe zingachepetse kugwiritsa ntchito mphamvu ndi 15%-20% poyerekeza ndi extruders wamba.

6. Conclusion and Future Development Trend

Mapulasitiki a engineering, ngati chinthu chofunikira kwambiri chochita bwino kwambiri, akugwira ntchito yofunika kwambiri pakukweza mafakitale padziko lonse lapansi, ndi ukadaulo wamapasa-screw extrusion ndiye chithandizo chachikulu pakukonza mapulasitiki apamwamba kwambiri. Kuchita kwa zida za extrusion kumatsimikizira mwachindunji ubwino, production efficiency and application effect of engineering plastic products. Ma HTS athu amapasa-screw extruders, kuphatikiza HTS BASIC, HTS PLUS ndi HTS SUPER, zidapangidwa mwapadera kuti zigwiritsidwe ntchito pamapulasitiki aukadaulo (sensitivity to overheating and hydrolytic degradation, high requirements on mixing and dispersing effect, high viscosity), ndi zabwino za torque yayikulu, liwilo lalikulu, precise temperature control, kwambiri kuvala kukana, osiyanasiyana ntchito ndi kulamulira wanzeru. Atha kupereka mayankho owongolera amitundu yosiyanasiyana ya mapulasitiki aumisiri ndi masikelo osiyanasiyana amabizinesi, kuthandiza mabizinesi kuthetsa mavuto pokonza, onjezerani ubwino wa malonda ndi kupanga bwino, ndikukulitsa mpikisano wamsika.

Kuyembekezera zam'tsogolo, ndi kukweza mosalekeza kwa mafakitale akumunsi monga magalimoto opepuka, electrical and electronic intelligence, mphamvu zatsopano ndi mankhwala apamwamba, kufunikira kwa magwiridwe antchito apamwamba, mapulasitiki a uinjiniya ogwira ntchito komanso okonda zachilengedwe apitiliza kukula, zomwe zidzaperekanso patsogolo zofunika zapamwamba paukadaulo wamapasa-screw extrusion ndi zida. Kukula kwamtsogolo kwa mapulasitiki opangira ma pulasitiki opangira ma twin-screw extruder awonetsedwa makamaka muzinthu zinayi:

Choyamba, nzeru ndi digito. Ndi chitukuko cha Viwanda 4.0, mapasa-screw extruders adzaphatikizidwa kwambiri ndi matekinoloje anzeru monga Internet of Things, deta zazikulu ndi luntha lochita kupanga. The HTS series extruders idzapititsa patsogolo ntchito yolamulira mitambo, zindikirani kuyang'anira nthawi yeniyeni, kusanthula deta, kukonza zolosera komanso kusintha mwanzeru njira yonse yopangira, kuchepetsa kulowererapo kwa ntchito, ndikuwongolera kupanga bwino komanso kusasinthika kwazinthu. Nthawi yomweyo, digito kayeseleledwe luso adzakhala chimagwiritsidwa ntchito pakupanga ndi debugging wa extruders, kuchepetsa kachitidwe ka kafukufuku ndi chitukuko ndi kukonzanso nthawi ya zida.

Chachiwiri, ntchito zapamwamba komanso kuchita bwino kwambiri. Kufunika kwa mapulasitiki apamwamba apamwamba (monga PEEK, PI) adzapitiriza kukula, zomwe zidzalimbikitsa kukweza kosalekeza kwa ntchito ya extruder. Ma extruder amtsogolo adzakhala ndi torque yapamwamba, liwiro lapamwamba komanso mphamvu yowongolera kutentha, ndi zigawo zikuluzikulu (screw, barrel, gearbox) zidzakonzedwanso kuti ziwongolere kusamva bwino, kukana dzimbiri ndi moyo wautumiki. Nthawi yomweyo, kugwiritsa ntchito mphamvu kwa zidazo kudzachepetsedwa kwambiri, kuzindikira kupanga kwapamwamba komanso kupulumutsa mphamvu.

Chachitatu, makonda ndi zosiyanasiyana. Magawo osiyanasiyana ogwiritsira ntchito ndi zinthu zosiyanasiyana zimachulukirachulukira zomwe zimafunikira pakukonza ma extrusion. Ma extruder amtsogolo atenga mawonekedwe osinthika osinthika, zomwe zimatha kusintha mwachangu zinthu zowononga, kufa mitu ndi zigawo zina malinga ndi zosowa za makasitomala, kuzindikira kukonza kwa mitundu ingapo ndi magulu ang'onoang'ono. Nthawi yomweyo, tidzapereka mayankho amunthu payekha malinga ndi zosowa zapadera za makasitomala, meeting the diverse market demands.

Fourth, environmental protection and greenization. With the strengthening of global environmental protection policies, environmental protection will become an important development direction of extrusion equipment. The future extruders will adopt more environmentally friendly materials and manufacturing processes, reduce energy consumption and pollutant emissions; at the same time, they will be more compatible with recyclable engineering plastics and biodegradable engineering plastics, promoting the green development of the engineering plastics industry.

We will always adhere to the concept of technological innovation, focus on the development needs of the engineering plastics industry, continuously invest in research and development, optimize the performance of HTS series extruders, improve after-sales service, and provide more professional, efficient and intelligent twin-screw extrusion solutions for global engineering plastics processing enterprises, helping the high-quality development of the engineering plastics industry.