Kanthi kemajuan industrialisasi global kanthi cepet, dikarepake kanggo bahan kinerja dhuwur ing otomotif, listrik lan elektronik, konstruksi, bidang medis lan liyane mundhak saben dina. Rekayasa plastik, minangka materi kinerja dhuwur tombol, wis mboko sithik ngganti bahan logam tradisional lan plastik umum ing akeh skenario aplikasi inti amarga sifat mekanik sing apik banget., heat resistance, corrosion resistance, dimensional stability and processability. Twin-screw extrusion technology is the core processing technology of engineering plastic compounds, and the performance of extrusion equipment directly determines the quality, 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, klasifikasi, processing difficulties of engineering plastics, peran inti saka teknologi extrusion kembar-meneng ing Processing plastik engineering, kaluwihan saka extruders seri HTS kita lan adaptasi diangkah kanggo plastik engineering, uga lapangan aplikasi tartamtu, Techniques Processing lan masalah umum lan solusi. Kanthi nambah paramèter teknis sing rinci, rincian pangolahan lan kasus aplikasi industri, artikel bakal enriched kanggo 3000-4000 tembung, nyedhiyakake referensi lengkap lan profesional kanggo perusahaan pangolahan plastik rekayasa, teknisi lan praktisi sing relevan.
1. Ringkesan Industri Plastik Teknik lan Karakteristik Kinerja Inti
1.1 Kahanan Saiki lan Tren Pangembangan Industri Plastik Teknik
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, lan samesthine kanggo njaga tingkat wutah taunan senyawa saka 7%-10% ing limang taun sabanjure. Antarane wong-wong mau, Asia-Pasifik minangka pasar produksi lan konsumsi plastik rekayasa paling gedhe ing donya, accounting kanggo luwih saka 55% saka pangsa pasar global, utamane amarga perkembangan otomotif kanthi cepet, industri listrik lan elektronik ing China, India lan negara liyane, uga paningkatan kapasitas panyengkuyung industri lan tingkat inovasi teknologi. Cina, minangka konsumen lan produser plastik engineering paling gedhe ing donya, nduweni panjaluk pasar gedhe, lan output lan konsumsi taunan mundhak ing tingkat pindho digit, utamane ing bidang kendaraan energi anyar, 5G komunikasi, lan piranti medis, dikarepake kanggo plastik engineering kinerja dhuwur nuduhake gaya wutah mbledhos.
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, antistatik, antibacterial, radiation resistance), to adapt to the harsh working environment of high temperature, tekanan dhuwur, corrosion and radiation; second, lightweight and integration. In the automotive, aerospace and other fields, in order to achieve energy saving and emission reduction goals, engineering plastics are increasingly used to replace metal materials, and the integration of product design is becoming higher and higher, which can reduce the number of parts, simplify the production process and reduce costs; third, environmental protection and recyclability. With the strengthening of global environmental protection policies and the improvement of environmental protection awareness, the development and application of recyclable engineering plastics, 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, medis, 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, high speed, 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
Compared with general plastics and metal materials, engineering plastics have unique comprehensive performance, which determines their wide application in various industrial fields. The core performance characteristics of engineering plastics are mainly reflected in the following five aspects, which also put forward special requirements for their processing technology and equipment:
1.2.1 Excellent Heat Resistance and Cold Resistance
Engineering plastics have a wide temperature adaptation range, which can maintain good mechanical properties (kekuwatan, toughness, hardness) ing lingkungan suhu dhuwur lan kurang. Compared with general plastics, sing biasane ilang sifat mekanik ing 80-120 ℃, paling plastik engineering bisa stabil ing 100-250 ℃, lan sawetara plastik engineering khusus (kayata PEEK, PI) malah bisa digunakake ing suhu ndhuwur 300 ℃. Ing wektu sing padha, plastik engineering uga duwe resistance kadhemen apik, kang bisa njaga kateguhan apik ing suhu kurang (ngisor -40 ℃), lan ora gampang pecah. Kinerja iki ndadekake plastik rekayasa cocok kanggo digunakake ing lingkungan suhu sing atos, kayata bagean mesin otomotif (suhu dhuwur) lan peralatan listrik ruangan (suhu kurang).
Ketahanan panas banget saka plastik rekayasa utamane amarga struktur molekul khusus (kayata dering aromatik, cincin heterosiklik) lan gaya antarmolekul kuwat, kang ndadekake ora gampang kanggo nyawiji lan decompose ing suhu dhuwur. Nanging, iki uga ndadekke kangelan tartamtu kanggo Processing: suhu Processing luwih dibutuhake kanggo nggawe wong nyawiji lan plasticize, lan kontrol suhu sing tepat dibutuhake kanggo nyegah dekomposisi termal.
1.2.2 Good Corrosion Resistance lan Kekiatan
Plastik rekayasa duwe stabilitas kimia sing apik lan tahan korosi, lan ora gampang corroded dening asam, alkalin, uyah, pelarut organik lan bahan kimia liyane. Dibandhingake karo bahan logam, kang gampang teyeng lan karat, plastik engineering duwe urip layanan maneh ing lingkungan kimia atos. Contone, poliamida (PA) plastik engineering tahan kanggo paling pelarut organik lan asam lemah lan alkali; polikarbonat (PC) plastik engineering tahan karat dening asam non-oksidasi lan uyah; polyphenylene sulfide (PPS) plastik engineering tahan kanggo korosi dening meh kabeh bahan kimia kajaba asam oxidizing kuwat.
Kajaba iku, plastik engineering duwe resistance cuaca apik lan resistance tuwa, lan ora gampang degradasi lan tuwa miturut tumindak sinar srengenge, udan, oksigen lan faktor lingkungan liyane, sing njamin panggunaan stabil jangka panjang ing lingkungan ruangan lan atos. Kinerja iki ndadekake plastik rekayasa digunakake akeh ing peralatan kimia, peralatan listrik njaba ruangan, bagean njaba otomotif lan lapangan liyane.
1.2.3 Pangolahan Gampang lan Efisiensi Produksi Dhuwur
Dibandhingake karo bahan logam, plastik engineering duwe kaluwihan saka Processing gampang, proses produksi prasaja lan efisiensi produksi dhuwur. Bahan logam biasane mbutuhake prosedur pangolahan rumit kayata forging, casting, mesin, kang duwe konsumsi energi dhuwur, efficiency kurang lan biaya dhuwur; while engineering plastics can be processed by extrusion, ngecor injeksi, blow molding and other methods, which can realize mass production, simplify the production process, reduce energy consumption and production cost. Contone, 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.
Nanging, 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
Engineering plastics have good dimensional stability, and the shrinkage rate is small (usually 0.3%-1.5%) during processing and use, which can ensure the dimensional accuracy of products and avoid deformation. This performance is particularly important for high-precision parts, such as electrical connectors, automotive precision components, piranti medis, etc. The good dimensional stability of engineering plastics is mainly due to their high crystallinity, low water absorption (except for some varieties such as PA) lan gaya antarmolekul kuwat.
Kajaba iku, most engineering plastics have excellent electrical insulation performance, which can maintain good insulation performance in a wide temperature range and frequency range, and are not easy to conduct electricity and arc. This makes engineering plastics widely used in electrical and electronic fields, such as wiring boards, cable ties, connectors, relays, motors and other electrical components.
1.2.5 Light Weight and High Specific Strength, Outstanding Wear Resistance
Engineering plastics have the characteristics of light weight (density is 1/3-1/5 of metal materials) and high specific strength (strength per unit weight is equivalent to or even higher than that of metal materials). Contone, the specific strength of glass fiber reinforced polyamide (PA66+GF30) is higher than that of ordinary carbon steel, which can effectively reduce the weight of products while ensuring the mechanical performance. Kinerja iki penting banget ing otomotif, aerospace lan lapangan liyane sing ngupayakake entheng lan hemat energi, sing bisa ngurangi konsumsi bahan bakar lan emisi karbon.
Ing wektu sing padha, plastik engineering uga duwe resistance nyandhang pinunjul lan resistance gesekan, lan koefisien gesekan cilik, kang bisa digunakake ing produksi bagean nyandhang-tahan (kayata gir, bantalan, pamblokiran ngusapake) tanpa lubrication tambahan utawa kurang lubrication, nyuda biaya pangopènan produk. Contone, polyoxymethylene (POM) plastik engineering duwe resistance nyandhang banget lan dikenal minangka “baja plastik”, sing akeh digunakake ing produksi gear otomotif, komponen listrik lan bagean tahan nyandhang liyane.
1.3 Klasifikasi Umum Plastik Teknik
Plastik rekayasa bisa dipérang dadi macem-macem jinis miturut struktur kimia, tingkat kinerja lan lapangan aplikasi. Cara klasifikasi umum kaya ing ngisor iki, sing mbantu luwih ngerti karakteristik pangolahan lan skenario aplikasi saka plastik teknik sing beda, lan pilih peralatan ekstrusi lan teknik pangolahan sing cocog:
1.3.1 Klasifikasi miturut Tingkat Kinerja
Miturut tingkat kinerja, plastik engineering bisa dipérang dadi plastik engineering umum lan plastik engineering khusus.
- Teknik Plastik Umum: Iki minangka plastik rekayasa sing paling akeh digunakake, kanthi teknologi produksi sing relatif diwasa, rega Moderate lan kinerja lengkap apik. Varietas utama kalebu poliamida (PA), polikarbonat (PC), polyoxymethylene (POM), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), etc. General engineering plastics are mainly used in automotive, listrik lan elektronik, home appliances and other fields, such as automotive parts, electrical connectors, home appliance shells, etc.
- Special Engineering Plastics: They have more excellent performance (such as higher heat resistance, corrosion resistance, sifat mekanik) than general engineering plastics, but the production technology is complex and the price is high. The main varieties include polyphenylene sulfide (PPS), polieter eter keton (NGIPI), polyimide (PI), polysulfone (PSU), polyethersulfone (PES), etc. Special engineering plastics are mainly used in high-end fields such as aerospace, piranti medis, new energy, and chemical equipment, such as aerospace components, medical implants, high-temperature resistant electrical components, etc.
1.3.2 Classification by Chemical Structure
According to the chemical structure of the molecular chain, engineering plastics can be divided into polyamide (PA), polikarbonat (PC), polyoxymethylene (POM), polyester (PET, PBT), polyphenylene sulfide (PPS), polieter eter keton (NGIPI), etc. 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, nyandhang resistance, toughness and chemical resistance, but has high water absorption, which affects the dimensional stability. Common varieties include PA6, PA66, PA11, PA12, etc. It is widely used in automotive parts (gir, bantalan, intake manifolds), electrical connectors, textile fibers, etc.
- Polikarbonat (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), etc.
- 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 “baja plastik” and is widely used in automotive parts (gir, pamblokiran ngusapake), komponen listrik (switches, bantalan), bagean mekanik, etc.
- Polyester (PET, 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 (connectors, relays), automotive parts, etc.
- Polyphenylene Sulfide (PPS): It has excellent heat resistance (long-term use temperature up to 200-220℃), corrosion resistance, flame retardancy and electrical insulation, but has poor toughness. It is widely used in high-temperature resistant electrical components, automotive engine parts, chemical equipment, etc.
- Polyether Ether Ketone (NGIPI): 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, etc. Different application fields have different requirements on the performance of engineering plastics. Contone, 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, ngecor injeksi, 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, lembaran, fibers). Compared with single-screw extrusion technology, twin-screw extrusion technology has the advantages of strong shearing force, good mixing effect, kontrol suhu sing tepat, 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 Kesulitan Pangolahan Plastik Rekayasa lan Keperluan kanggo Peralatan Ekstrusi
Kaya sing wis kasebut sadurunge, plastik engineering duwe kinerja lengkap banget, nanging kangelan Processing uga luwih dhuwur tinimbang plastik umum, utamané amarga struktur molekul khusus lan karakteristik kinerja. Kesulitan pangolahan utama plastik rekayasa lan syarat sing cocog kanggo peralatan ekstrusi yaiku kaya ing ngisor iki:
2.1.1 Sensitivitas kanggo Overheating lan Degradasi Hidrolitik
Paling rekayasa plastik (such as PA, PBT, PPS) sensitif marang overheating lan degradasi hidrolitik. Yen suhu Processing dhuwur banget utawa wektu panggonan ing extruder dawa banget, chain molekul saka plastik engineering bakal break, nyebabake dekomposisi termal, sing bakal ngurangi sifat mekanik, heat resistance and other performance of the product, and even cause discoloration, carbonization and other defects. Kajaba iku, 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℃; second, 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 (usually 1-5 menit) and precise temperature control, kang luwih cocok kanggo plastik engineering Processing saka siji-meneng extruders (wektu panggonan 5-10 menit).
2.1.2 Keperluan Dhuwur babagan Efek Campuran lan Penyebaran
Ing engineering pangolahan plastik, asring perlu kanggo nambah modifiers (kayata serat kaca, serat karbon, talc, flame retardants, kompatibilitas) kanggo nambah kinerja produk (kayata nguatake, tangguh, flame retardant). Contone, nambah serat kaca kanggo PA bisa nambah kekuatan lan stabilitas dimensi; nambah retardants semangat kanggo PBT bisa nambah retardancy semangat sawijining. Campuran seragam lan panyebaran modifier ing matriks plastik rekayasa penting banget kanggo kinerja produk pungkasan.. Yen efek campuran lan dispersing kurang, modifiers bakal agglomerate, nyebabake kinerja produk sing ora rata, lan malah nyuda sifat mekanik produk.
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. Kajaba iku, 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, they will be worn quickly, resulting in reduced shearing force and mixing capacity of the extruder, affecting the product quality and reducing the service life of the equipment.
This requires the screw and barrel of the extruder to be made of high-quality wear-resistant materials and processed by advanced manufacturing technology. Our HTS series extruders adopt imported wear-resistant alloy steel for the screw and barrel, and undergo bimetallic composite treatment or laser cladding treatment, which greatly improves the wear resistance and corrosion resistance of the screw and barrel, and can adapt to the processing of reinforced engineering plastics with high hardness modifiers.
2.1.4 High Requirements on Processing Fluidity and Pressure Control
Some engineering plastics (such as PPS, NGIPI) 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, sing bisa kanthi efektif ngirim bahan plastik rekayasa viskositas dhuwur; at the same time, extruder dilengkapi sensor meksa tliti dhuwur, kang bisa ngawasi meksa extrusion ing wektu nyata lan nyetel kacepetan meneng lan dipakani kacepetan otomatis kanggo mesthekake stabilitas meksa extrusion lan proses Gamelan saka Processing..
2.2 Prinsip Kerja lan Alur Proses Ekstrusi Sekrup Kembar Plastik Teknik
Proses ekstrusi sekrup kembar saka plastik rekayasa minangka proses fisik lan kimia sing kompleks, sing melu interaksi sawetara faktor kayata suhu, tekanan, gaya geser lan wektu. Tujuan inti yaiku kanggo nyawiji lan plasticize bahan mentahan plastik engineering lan modifiers, nyampur padha seragam, banjur extrude menyang wangun sing dibutuhake (kayata partikel, pipa, lembaran, fibers) liwat sirah die. 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 (kayata serat kaca, serat karbon, talc, flame retardants), kompatibilitas, lubricants and other additives. The pretreatment steps are as follows:
- Drying Treatment: Paling rekayasa plastik (such as PA, 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: contone, PA6 is dried at 80-100℃ for 4-6 jam, PA66 is dried at 100-120℃ for 6-8 jam, PBT wis garing ing 120-140 ℃ kanggo 2-4 jam, PPS wis garing ing 150-160 ℃ kanggo 3-5 jam. Isi kelembapan bahan mentah sing garing kudu dikontrol ing ngisor iki 0.1%-0.2%.
- Perawatan Premixing: Miturut rasio rumus, resin plastik rekayasa kering, modifiers lan aditif sijine menyang mixer kacepetan dhuwur kanggo premixing. Tujuan saka premixing yaiku kanggo nggawe modifiers lan aditif kanthi seragam ing permukaan partikel resin., nambah efek campuran sajrone ekstrusi, lan supaya aglomerasi lokal modifiers. Kacepetan nyawiji umume 800-1200 rpm, lan wektu nyampur yaiku 5-10 menit. Kanggo sawetara modifiers karo kompatibilitas miskin (kayata serat kaca lan PA), compatibilizer kudu ditambahake sak premixing kanggo nambah kompatibilitas antarane modifier lan resin.
- Crushing lan Sieving: Kanggo resin plastik engineering karo ukuran partikel gedhe utawa modifiers karo ukuran partikel ora rata (kayata serat kaca), crushing lan sieving perawatan kudu digawa metu kanggo mesthekake uniformity saka bahan mentahan lan supaya mengaruhi efek nyawiji lan dispersing sak extrusion. Ukuran partikel saka bahan mentahan ulig kudu kontrol ing 20-40 bolong.
2.2.2 Feeding lan Ngirim
Bahan mentah sing wis dicampur dikirim menyang hopper pakan saka extruder sekrup kembar liwat feeder sekrup utawa feeder sabuk.. Piranti pakan saka extruder biasane dilengkapi fungsi regulasi kacepetan konversi frekuensi, kang bisa nyetel kacepetan dipakani miturut kacepetan meneng lan kacepetan extrusion kanggo mesthekake yen bahan ngetik growong extrusion stably lan seragam, Nyingkiri akumulasi materi utawa pakan sing ora cukup. 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).
Ing wektu sing padha, 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. Gaya geser lan gaya gesekan bisa ngilangi aglomerat modifier, nggawe modifiers seragam buyar ing resin plastik engineering ilang, lan ningkataké fusi lan kompatibilitas antarane modifier lan resin. Gaya gesekan uga bisa ngasilake panas tartamtu, sing digabungake karo pemanasan eksternal tong minyak (pemanasan listrik utawa pemanasan uap) kanggo nggawe resin plastik engineering mboko sithik nyawiji lan plasticize.
Laras extruder biasane dipérang dadi 4-6 bagean kontrol suhu (bagean dipakani, bagean leleh, bagean nyawiji, bagean homogenizing, bagean sirah mati), lan suhu saben bagean wis sabenere kontrol miturut jinis plastik engineering. Contone, nalika ngolah PA66+GF30 (serat kaca diperkuat 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 (granula), 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, lembaran, 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, pipa, lembaran). 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: kanggo ngudani (produksi granula), cooling tank banyu biasane digunakake, lan suhu banyu cooling dikontrol ing 20-30 ℃, lan wektu cooling punika 2-5 menit; kanggo pipa lan lembaran, cooling online utawa cooling semprotan banyu digunakake, lan kacepetan cooling kudu dikontrol supaya ora deformasi produk amarga cooling ora rata. Cooling cepet bisa nggawe produk setengah rampung solidify cepet, njaga wujud lan ukuran produk, lan nambah sifat mekanik produk.
2.2.6 Cutting lan Post-Processing
Sawise cooling lan solidification, produk setengah rampung diproses dadi produk pungkasan liwat nglereni utawa langkah-langkah pasca pangolahan liyane. Kanggo produksi senyawa plastik engineering (granula), Strip digawe adhem dikirim menyang granulator kanggo nglereni, lan granulator dilengkapi piso Rotary, 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.
Kajaba iku, 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, heat resistance, akurasi dimensi) 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. Contone, ukuran partikel saka resin plastik engineering lan modifiers kudu seragam; yen ukuran partikel ora rata, bakal nyebabake leleh lan nyampur bahan sing ora rata. Isi kelembapan bahan mentah kudu dikontrol kanthi ketat ing ngisor iki 0.1%-0.2%; yen isi kelembapan dhuwur banget, bakal nyebabake degradasi hidrolitik saka materi lan gelembung ing produk. Kemurnian bahan mentah uga penting banget; impurities ing bahan mentahan (kayata logam, watu, bledug) ora mung mengaruhi kualitas produk, nanging uga nganggo meneng lan tong minyak extruder, lan malah njalari macet peralatan.
2.3.2 Rasio Formula
Rasio rumus senyawa plastik rekayasa (rasio resin, modifiers lan aditif) minangka kunci kanggo nemtokake kinerja produk. The type and dosage of modifiers should be determined according to the performance requirements of the product. Contone, nambahi 20%-40% of glass fiber to PA can significantly improve its strength and dimensional stability, but excessive glass fiber will reduce the toughness and processing fluidity of the product. The type and dosage of additives also need to be reasonably matched: compatibilizers can improve the compatibility between modifiers and resin, and the dosage is generally 0.5%-2%; lubricants can reduce the friction between materials and equipment, improve processing fluidity, and the dosage is generally 0.3%-1%; antioxidants can prevent the material from thermal oxidation degradation during processing, and the dosage is generally 0.1%-0.5%.
2.3.3 Premixing Effect
Premixing is the foundation of 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, the mixing time is 5-10 menit, 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.
- Kacepetan meneng: The screw speed of twin-screw extruders for engineering plastics generally ranges from 100 kanggo 1000 rpm. Our HTS series extruders can reach a maximum speed of 1000 rpm. The higher the screw speed, the greater the shear force and friction force received by the materials, the better the mixing and dispersing effect of modifiers, and the higher the production efficiency. Nanging, if the screw speed is too high, the residence time of the materials in the extrusion cavity is too short, resulting in incomplete melting of the resin, insufficient mixing of materials, and uneven product quality; if the screw speed is too low, the shear force and friction force are insufficient, the modifiers cannot be fully dispersed, and the production efficiency is low. The screw speed should be adjusted according to the type of engineering plastic and the type of modifier: for high-viscosity engineering plastics (such as PPS, NGIPI), a lower screw speed is needed to ensure sufficient melting and mixing; for reinforced engineering plastics (such as glass fiber reinforced PA), a higher screw speed is needed to ensure the uniform dispersion of glass fiber.
- Extrusion Temperature: The extrusion temperature is the key to ensuring the melting and plasticization of engineering plastics. The temperature of each section of the barrel and die head must be precisely controlled according to the type of engineering plastic. The temperature of the feeding section is lower (slightly higher than the drying temperature of the raw materials), which is mainly to prevent the materials from caking and ensure smooth feeding; the temperature of the melting section is medium, which is mainly to promote the melting and plasticization of the resin; the temperature of the mixing section is higher, which is mainly to enhance the shear and mixing effect, and promote the uniform dispersion of modifiers; the temperature of the homogenizing section is slightly lower than the mixing section, which is mainly to ensure the uniform temperature and viscosity of the materials, and avoid thermal decomposition; the temperature of the die head section is slightly lower than the homogenizing section, which is to ensure the shaping effect of the semi-finished products. The temperature control precision should reach ±1℃ to avoid local overheating and thermal decomposition of the material.
- Extrusion Pressure: The extrusion pressure of engineering plastics twin-screw extrusion generally ranges from 5 to 15MPa. The pressure in the extrusion cavity is mainly determined by the compression ratio of the screw, ukuran bolongan die lan kacepetan meneng. Sing luwih dhuwur tekanan ekstrusi, luwih apik efek campuran lan dispersing saka bahan, lan produk sing luwih padhet. Nanging, yen meksa dhuwur banget, bakal nambah konsumsi energi lan nyandhang peralatan, lan malah nyebabake sirah die kanggo mblokir; yen meksa banget kurang, materi ora bisa kanthi teken lan pipis, produk punika ngeculke, lan kinerja ora stabil. Tekanan ekstrusi kudu diatur miturut jinis plastik rekayasa lan wujud produk: kanggo bahan viskositas dhuwur lan produk karo bolongan mati cilik, tekanan ekstrusi sing luwih dhuwur dibutuhake.
2.3.5 Struktur Kepala Die
Struktur sirah die utamane kalebu wangun, ukuran lan nomer bolongan mati, sing langsung mengaruhi efek mbentuk lan kualitas produk. Kanggo produksi senyawa plastik engineering (granula), sirah die kudu dilengkapi macem-macem bolongan die seragam, lan ukuran bolongan die kudu dicocogake karo ukuran partikel produk; kanggo produksi pipa lan lembaran, sirah die kudu dirancang miturut wangun lan ukuran produk, lan saluran aliran saka sirah die kudu Gamelan supaya klempakan materi lan overheating lokal. Kepala die uga kudu dilengkapi piranti kontrol suhu kanggo mesthekake suhu seragam saka sirah die lan wangun stabil prodhuk..
3. Extruders Seri HTS kita: Solusi Profesional kanggo Pengolahan Plastik Teknik
Kita wis suwe melu riset, pangembangan lan produksi extruders twin-screw kinerja dhuwur, 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, perfectly adapting to the processing needs of various engineering plastics.
3.1 Core Advantages of HTS Series Extruders for Engineering Plastics Processing
3.1.1 High Torque and High Speed, Efisiensi Produksi Dhuwur
Plastik rekayasa nduweni viskositas dhuwur lan fluiditas pangolahan sing kurang, sing mbutuhake extruder duwe torsi kuwat lan kapasitas ngirim. Extruders seri HTS kita nggunakake kotak gear torsi dhuwur sing dikembangake lan diproduksi kanthi mandiri (Seri HTS PLUS lan seri HTS SUPER) utawa diimpor saka manufaktur Eropah anjog (Seri HTS BASIC), kanthi torsi spesifik 14Nm/cm³, sing luwih dhuwur tinimbang extruders twin-screw biasa (torsi umum 8-12Nm/cm³). Desain torsi dhuwur mesthekake yen extruder bisa kanthi stabil ngirim bahan plastik rekayasa viskositas dhuwur, nyegah akumulasi materi lan pamblokiran peralatan, lan nambah stabilitas proses extrusion.
Ing wektu sing padha, extruders seri HTS duwe desain kacepetan dhuwur, kanthi kacepetan maksimal nganti 1000rpm. Kacepetan dhuwur bisa ngasilake gaya geser lan gaya campuran sing kuwat, which can fully break the agglomerates of modifiers, nggawe modifiers seragam kasebar ing matriks resin, lan nambah efek campuran lan dispersing. Kajaba iku, desain kacepetan dhuwur uga nemen mbenakake efficiency produksi: dibandhingake karo extruders biasa, efisiensi produksi HTS seri extruders bisa tambah dening 30%-50%, sing bisa nyukupi kabutuhan produksi skala gedhe saka perusahaan plastik rekayasa.
3.1.2 Short Residence Wektu, Efektif Nyingkiri Degradasi Termal
Minangka plastik engineering sensitif kanggo overheating lan degradasi hidrolitik, wektu panggonan bahan ing extruder wigati. Extruders seri HTS kita nganggo struktur sekrup sing dioptimalake lan desain tong minyak, karo wektu panggonan cendhak mung 1-3 menit, sing luwih cendhek tinimbang extruders twin-screw biasa (5-10 menit) and single-screw extruders (10-15 menit). 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.
Kajaba iku, 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, Stable Performance
The HTS series extruders adopt an advanced intelligent temperature control system, which can realize precise control of the temperature of each section of the barrel and the die head. The temperature control precision can reach ±1℃, which can strictly control the processing temperature within the optimal range of engineering plastics, avoid local overheating and thermal decomposition of the material. The temperature control system is equipped with a real-time monitoring and alarm function: if the temperature of any section exceeds the set range, the system will issue an alarm prompt in time, and even automatically adjust the heating power or shut down the equipment if necessary, to avoid equipment failure and product quality problems.
Kajaba iku, the barrel of the HTS series extruders adopts a double-layer jacket design, which can realize rapid heating and cooling, and improve the response speed of temperature control. The die head is also equipped with an independent temperature control device, which ensures the uniform temperature of the die head and the stable shaping of the product.
3.1.4 Excellent Mixing and Dispersing Effect
The HTS series extruders adopt an intermeshing co-rotating twin-screw structure, with a reasonable screw pitch, lead and compression ratio design. The intermeshing and rotating of the twin screws can generate strong shear force and kneading force, which can fully break the agglomerates of modifiers (kayata serat kaca, serat karbon, talc), make the modifiers uniformly dispersed in the engineering plastic resin matrix, and ensure the mixing and dispersing effect. The mixing uniformity of the HTS series extruders can reach more than 95%, sing luwih dhuwur tinimbang extruders twin-screw biasa (85%-90%).
The screw of the HTS series extruders adopts a modular design, and different types of screw elements (such as conveying elements, mixing elements, shearing elements) can be freely combined according to the type of engineering plastic and modifier. Contone, 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 (such as 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), and undergo bimetallic composite treatment or laser cladding treatment. The surface hardness of the screw and barrel can reach ≥65 HRC (Seri HTS BASIC) and ≥70 HRC (Seri HTS PLUS lan seri HTS SUPER), 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.
Kajaba iku, 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, PBT) and special engineering plastics (PPS, NGIPI, 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, etc.
The modular design of the HTS series extruders (screw, laras, sirahe mati, lsp.) 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. Kajaba iku, 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. The system can store multiple sets of product formulas and processing parameters. Nalika pelanggan gawé macem-macem jinis plastik engineering, padha mung kudu nelpon rumus lan paramèter sing cocog, tanpa debugging bola-bali, sing ngirit wektu lan nambah efisiensi produksi.
Sistem kasebut uga dilengkapi fungsi ngawasi wektu nyata, kang bisa ngawasi paramèter tombol saka proses extrusion (kayata suhu, tekanan, kacepetan meneng, kacepetan dipakani) ing wektu nyata, lan ngrekam data produksi (kayata output, wektu pangolahan) kanggo pitakonan lan analisis mengko. Kanggo extruders seri HTS SUPER, kita uga nyedhiyani fungsi kontrol maya, kang bisa éling imbuhan parameter remot, ngawasi data produksi lan pangopènan prediktif saka peralatan, mujudake manajemen produksi sing cerdas.
Kajaba iku, extruders seri HTS nganggo desain struktural sing cukup, kang ndadekake pangopènan luwih trep. meneng, laras, die head and other components can be disassembled and assembled quickly, which reduces the maintenance time and labor intensity. Our after-sales service team will provide professional installation, commissioning and training services for customers, ensuring that customers can use the equipment smoothly.
3.2 HTS Series Extruder Product Types and Their Adaptation to Engineering Plastics
In order to meet the diverse processing needs of engineering plastics enterprises of different scales and product types, we have launched three main product types in the HTS series: Seri HTS BASIC, Seri HTS PLUS lan seri HTS SUPER. Each series has its own characteristics and targeted adaptation scenarios, which can be selected by customers according to their own production scale, product type, budget and other factors.
3.2.1 HTS BASIC Series Extruders: Flexible and Cost-Effective Choice for General Engineering Plastics
The HTS BASIC series extruders are a cost-effective product series designed for engineering plastics processing enterprises with medium and small production scales or initial entry into the industry. This series of extruders uses medium-torque gearboxes from leading European manufacturers, which have the advantages of stable performance, swara kurang, high efficiency and long service life. The medium-torque design (specific torque 10-12Nm/cm³) can meet the processing needs of most general engineering plastics (such as PA6, PA66, POM, PET, PBT) and low-to-medium modified engineering plastics (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, karo diameteripun meneng kiro-kiro saka 30mm kanggo 65mm, lan rasio kompresi 4-8, kang bisa diatur miturut jinis plastik engineering. Laras digawe saka baja paduan tahan nyandhang kanthi perawatan nitriding, lan sekrup digawe saka baja paduan tahan nyandhang lan karat, kang nduweni resistance nyandhang apik. Extruder dilengkapi sistem kontrol PLC lan antarmuka operasi layar tutul, kang bisa éling dipakani otomatis, kontrol suhu otomatis, kontrol meksa otomatis lan nglereni otomatis, lan prasaja lan gampang kanggo operate.
Kapasitas produksi saka extruders seri HTS BASIC kisaran saka 100kg / jam nganti 500kg / jam, 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, mati sirah, 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: High-Performance Choice for Engineering Plastics and Modified Products
Extruders seri HTS PLUS nggunakake kotak gear torsi dhuwur sing dikembangake lan diprodhuksi dening kita., kanthi torsi spesifik 14Nm/cm³, sing nduweni torsi lan kapasitas beban sing luwih kuat tinimbang seri HTS BASIC. Seri extruders iki utamane dirancang kanggo ngolah plastik rekayasa kanthi kinerja dhuwur, plastik engineering dhuwur-dimodifikasi lan plastik engineering khusus (such as PPS), kang cocok kanggo medium lan gedhe-ukuran engineering plastik Processing Enterprises sing nguber kinerja dhuwur lan efficiency dhuwur.
Extruders seri HTS PLUS duwe diameter sekrup saka 65mm nganti 110mm, rasio kompresi 5-10, lan kisaran kacepetan sekrup 200~800 rpm. Sekrup lan tong minyak nganggo perawatan komposit bimetallic, kang nduweni resistance nyandhang luwih dhuwur lan resistance karat (atose lumahing ≥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, plastik engineering dhuwur-dimodifikasi lan plastik engineering khusus (such as PPS). This series of extruders has excellent mixing and dispersing effect, short residence time and high production efficiency, kang bisa èfèktif ngatasi kangelan Processing viskositas dhuwur lan plastik engineering dhuwur-dimodifikasi, lan mbantu perusahaan ningkatake kualitas produk lan efisiensi produksi.
3.2.3 HTS SUPER Series Extruders: Pilihan Top-End kanggo High-End Engineering Plastics
Extruders seri HTS SUPER nggunakake piranti transmisi torsi ultra-dhuwur paling anyar sing dikembangake kanthi mandiri, with a specific torque of 14Nm/cm³ and a maximum speed of up to 1000rpm. Ngarahake ing torsi dhuwur lan karakteristik kacepetan dhuwur saka seri iki, desain struktural saben komponèn tombol extruder wis rampung optimized, yaiku seri extruder paling dhuwur, makili tingkat majeng pembangunan extruder China. Seri extruders iki utamané dirancang kanggo Processing saka plastik engineering khusus dhuwur-mburi (kayata PEEK, PI, PSU, PES) lan plastik rekayasa sing dimodifikasi kanthi kinerja dhuwur (kayata serat karbon dikiataken PEEK, serat kaca diperkuat PI), sing cocog kanggo perusahaan pangolahan plastik rekayasa skala gedhe sing ngupayakake presisi dhuwur, kinerja dhuwur lan Intelligence.
Extruders seri HTS SUPER duwe diameter sekrup saka 80mm nganti 130mm, rasio kompresi 6-12, lan sawetara kacepetan sekrup 250~1000 rpm. Sekrup lan tong minyak nganggo impor baja paduan sing tahan nyandhang lan teknologi cladding laser, kang nduweni resistance nyandhang dhuwur banget lan resistance karat (atose lumahing ≥70 HRC), lan bisa adaptasi kanggo Processing plastik engineering khusus karo resistance suhu dhuwur, viskositas dhuwur lan modifiers hardness dhuwur. Extruder dilengkapi PLC cerdas + sistem kontrol layar tutul awan, kang bisa éling imbuhan parameter remot, monitoring data produksi, predictive maintenance of equipment and data analysis, mujudake manajemen produksi sing cerdas.
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 menit) and precise temperature control can effectively avoid the thermal decomposition of special engineering plastics, ensuring the excellent performance of the product. Kajaba iku, 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, 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 (such as 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 (NGIPI, PI, PSU, PES) lan plastik rekayasa sing dimodifikasi kanthi kinerja dhuwur (filling amount ≥50%, kayata serat karbon dikiataken 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/jam – 500kg/jam), 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/jam – 2000kg/jam), 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/jam – 3000kg/jam), 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) to avoid waste of equipment resources and energy.
3.3.3 Consider the Modification Demand and Mixing Effect
Yen produk utama perusahaan diowahi plastik engineering, efek nyawiji lan dispersing saka extruder punika faktor tombol kanggo dianggep. Kanggo produk sing kudu nambah macem-macem modifiers (kayata flame retardants, kompatibilitas, agen reinforcing) at the same time, iku perlu kanggo milih extruders karo kinerja nyawiji banget, kayata seri HTS PLUS lan seri HTS SUPER kanthi unsur sekrup pencampur modular. Loro seri iki bisa kanthi bebas nggabungake unsur-unsur pangirim, unsur campuran lan unsur shearing miturut jinis modifier, nyetel intensitas campuran lan wektu panggonan, lan mesthekake yen macem-macem modifiers seragam buyar ing matriks resin. Contone, nalika ngolah PBT sing diowahi tahan api, unsur liyane nyawiji bisa diatur kanggo mesthekake sawur seragam saka retardants semangat, nyegah insufficiency flame retardancy lokal; nalika ngolah serat kaca dikiataken PA, unsur shearing liyane bisa diatur kanggo break agglomeration saka serat kaca lan nambah pasukan iketan antarane serat kaca lan resin. Kajaba iku, yen perusahaan duwe panjaluk modifikasi macem-macem lan kelompok cilik, dianjurake kanggo milih extruder karo panggantos cepet saka unsur meneng (kayata desain meneng modular seri HTS), sing bisa nyuda wektu pangaturan peralatan lan nambah efisiensi produksi.
3.3.4 Coba Anggaran Biaya lan Keuntungan Komprehensif
Anggaran biaya minangka faktor penting kanggo perusahaan milih peralatan, nanging ora dianjurake kanggo nguber biaya murah kanthi wuta. Sampeyan perlu kanggo ngimbangi biaya tuku dhisikan, biaya pangopènan mengko, konsumsi energi lan efisiensi produksi kanggo nggedhekake keuntungan lengkap. Seri HTS BASIC nduweni biaya tuku awal sing paling murah, konsumsi energi kurang lan pangopènan prasaja, sing cocog kanggo perusahaan kanthi anggaran winates lan skala produksi cilik; seri HTS PLUS duwe biaya tuku dhisikan Moderate, nanging efisiensi produksi sing dhuwur, urip dawa layanan lan efek Processing stabil bisa nyuda biaya pangopènan mengko lan nambah tingkat kualifikasi produk, sing cocog kanggo perusahaan ukuran medium lan gedhe kanthi anggaran tartamtu lan ngupayakake kinerja dhuwur; seri HTS SUPER duweni biaya tuku dhisikan paling dhuwur, nanging bisa ngolah produk dhuwur kanthi nilai tambah dhuwur, lan kontrol cerdas lan umur layanan sing dawa bisa nyuda biaya tenaga kerja lan biaya pangopènan ing wektu salajengipun, sing cocog kanggo perusahaan skala gedhe kanthi anggaran sing cukup lan fokus ing pasar dhuwur. Kajaba iku, perusahaan uga kudu nimbang layanan sawise-sales peralatan. Extruders seri HTS kita nyedhiyakake sistem layanan sawise-sales lengkap, kalebu instalasi, komisioning, pelatihan teknis, pangopènan biasa lan panggantos cepet saka spare parts, sing bisa nyuda resiko operasi mengko saka Enterprises.
3.3.5 Coba Kompatibilitas karo Peralatan Auxiliary
Proses ekstrusi twin-screw saka plastik rekayasa kudu dicocogake karo seri peralatan tambahan, kayata peralatan pangatusan bahan baku, mixer kacepetan dhuwur, luwih adhem, granulator, mesin screening, mesin packing, etc. Nalika milih extruder, enterprises need to consider the compatibility between the extruder and auxiliary equipment to ensure the smooth operation of the entire production line. Our HTS series extruders can be perfectly matched with various standard auxiliary equipment, and can also be customized according to the enterprise’s existing auxiliary equipment to avoid the waste caused by the incompatibility between new equipment and old auxiliary equipment. Contone, if the enterprise already has a high-speed mixer with a mixing capacity of 500kg, it can select the HTS PLUS series extruder with a production capacity of 500kg/h – 800kg/h to match it, ensuring the coordination of raw material premixing and extrusion production.
4. Application Fields of Engineering Plastics and Matching HTS Series Extruder Solutions
Rekayasa plastik, kanthi kinerja lengkap sing apik banget, wis akeh digunakake ing otomotif, listrik lan elektronik, medis, aerospace, kimia, construction lan lapangan liyane. Bidang aplikasi sing beda duwe syarat sing beda babagan kinerja produk plastik rekayasa, kang uga sijine nerusake syarat beda ing peralatan Processing extrusion. Ngisor, kita bakal njlentrehake babagan karakteristik aplikasi plastik rekayasa ing lapangan utama lan solusi extruder seri HTS sing cocog, nyedhiyakake referensi sing ditargetake kanggo perusahaan ing macem-macem lapangan.
4.1 Lapangan Otomotif: entheng, Resistance Suhu Dhuwur lan Wear Resistance
Kanthi pangembangan otomotif entheng lan hemat energi lan pengurangan emisi, plastik engineering wis dadi bahan penting kanggo bagean automotive, mboko sithik ngganti bahan logam tradisional. The engineering plastics used in the automotive field mainly include PA, POM, PC, PBT, PPS, lsp., 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, nyandhang 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, and its low energy consumption and cost can reduce the production cost of automotive parts. For automotive engine parts (such as intake manifolds, cylinder head covers, oil pans) made of high-temperature resistant and wear-resistant engineering plastics (PA66+GF30, PPS), the HTS PLUS series extruders are more suitable. Its high torque and excellent mixing and dispersing effect can ensure the uniform dispersion of glass fiber, improve the strength and high temperature resistance of the product, and its wear-resistant screw and barrel can adapt to the wear of glass fiber, ensuring long-term stable production. For high-end new energy vehicle parts (such as battery shell, motor insulation parts) made of high-end special engineering plastics (NGIPI, PI), the HTS SUPER series extruders are required. Its ultra-high torque, kontrol suhu pas lan wektu panggonan cendhak bisa supaya bosok termal saka bahan tahan suhu dhuwur, mesthekake kinerja jampel lan resistance karat prodhuk, lan ketemu syarat ketat kendaraan energi anyar ing kinerja bagean.
Studi Kasus: Produsen bagean otomotif gedhe sing duwe spesialisasi ing bagean baterei kendaraan energi anyar milih extruder seri HTS SUPER (diameteripun meneng 100mm) kanggo ngolah cangkang baterei PEEK sing diperkuat serat karbon. Bahan PEEK nduweni viskositas dhuwur lan tahan suhu dhuwur, lan jumlah ngisi serat karbon tekan 40%, kang nduweni syarat banget dhuwur ing peralatan extrusion. Extruders seri HTS SUPER, kanthi torsi paling dhuwur 14Nm/cm³ lan kacepetan maksimal 1000rpm, ngasilake gaya geser sing kuat lan gaya campuran, sing ndadekake serat karbon disebarake kanthi seragam ing matriks PEEK; sistem kontrol suhu sing tepat (presisi ± 1 ℃) strictly kontrol suhu Processing ing 380-400 ℃, ngindhari dekomposisi termal PEEK; wektu panggonan cendhak (1.5 menit) efektif nyuda degradasi materi, njamin kekuatan lan kinerja insulasi saka cangkang baterei. Sawise nggunakake extruders seri HTS SUPER, efisiensi produksi perusahaan tambah dening 40%, tingkat kualifikasi produk tambah saka 88% kanggo 99%, lan biaya produksi suda dening 15%, sing wis entuk pangenalan dhuwur saka perusahaan.
4.2 Lapangan Listrik lan Elektronik: Isolasi Listrik, Flame Retardancy lan Stabilitas Dimensi
Bidang listrik lan elektronik minangka salah sawijining bidang plastik rekayasa sing paling wiwitan lan paling akeh digunakake. Plastik rekayasa utamane digunakake ing konektor listrik, wiring boards, relays, motor, cable ties, tutup lampu lan komponen liyane. The core requirements for extrusion processing are: insulasi listrik sing apik banget, retardancy geni, stabilitas dimensi, resistance karat lan keracunan kurang, which require the extruder to have precise temperature control, efek nyawiji lan dispersing apik lan kapasitas kontrol kualitas sing ketat.
Kanggo komponen listrik umum (kayata kabel ties, connectors) made of general engineering plastics (PA6, PBT, PC), extruders seri BASIC HTS cocok. Konfigurasi fleksibel bisa cocog karo kepala die sing beda kanggo ngasilake komponen saka macem-macem wujud lan ukuran; kontrol suhu pas njamin kinerja jampel electrical prodhuk, lan biaya sing murah bisa nyukupi kabutuhan produksi massal komponen listrik umum. Kanggo komponen listrik tliti dhuwur (kayata relay, gulungan motor) digawe saka plastik rekayasa sing diowahi tahan api (PBT + GF30 + tahan api, PA66+ tahan api), extruders seri HTS PLUS luwih disenengi. Efek nyawiji lan dispersing sing dhuwur bisa njamin panyebaran seragam tahan api, nyegah insufficiency flame retardancy lokal, lan ketemu UL94 V-0 standar tahan api; kontrol dimensi pas bisa njamin akurasi dimensi saka komponen tliti dhuwur, ngindhari kegagalan perakitan. Kanggo komponen listrik dhuwur-mburi (kayata konektor tahan suhu dhuwur, komponen listrik aerospace) digawe saka plastik engineering khusus (PPS, PSU, PES), the HTS SUPER series extruders are required. Torsi sing dhuwur banget lan resistensi nyandhang sing apik banget bisa ngatasi viskositas dhuwur lan kekerasan dhuwur saka plastik rekayasa khusus., lan kontrol suhu pas lan wektu panggonan cendhak bisa njamin kinerja jampel electrical lan resistance suhu dhuwur saka produk, nyukupi syarat ketat produk listrik lan elektronik sing paling dhuwur.
4.3 Bidang Kedokteran: Biokompatibilitas, Sterility lan Precision
Bidang medis duwe syarat sing ketat banget babagan bahan, lan plastik rekayasa sing digunakake ing bidang medis kudu nduweni biokompatibilitas sing apik, sterilitas, resistance karat lan stabilitas dimensi, lan ora kudu ngasilake zat beracun lan mbebayani. Plastik engineering utama sing digunakake ing lapangan medis kalebu PC, PA, NGIPI, PSU, lsp., kang utamané digunakake ing kontaner medical, kateter medis, medical implants, instrumen bedah lan produk liyane. The core requirements for extrusion processing are: tliti dhuwur, ora polusi, kinerja stabil, sing mbutuhake extruder duwe kebersihan dhuwur, kontrol suhu sing tepat lan kapasitas kontrol kualitas sing ketat.
Kanggo produk medis umum (kayata wadhah medis, kateter biasa) digawe saka plastik rekayasa umum kelas medis (PC kelas medis, kelas medis 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, lsp., 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, kinerja stabil, 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, lan ngawasi remot lan fungsi pangopènan prediktif bisa njamin operasi stabil saka peralatan ing produksi terus-terusan long-term; konfigurasi customizable bisa nyukupi kabutuhan Processing khusus saka macem-macem komponen aerospace, njamin kinerja dhuwur lan linuwih produk.
4.5 Lapangan Kimia: Resistance Korosi lan Wear Resistance
Lapangan kimia nduweni lingkungan kerja sing atos, lan plastik rekayasa sing digunakake ing lapangan kimia kudu nduweni ketahanan korosi sing apik, nyandhang resistance, resistance suhu dhuwur lan resistance meksa. Plastik rekayasa utama sing digunakake ing lapangan kimia kalebu PPS, NGIPI, PVDF (polivinilidena fluorida), lsp., kang utamané dipigunakaké ing peralatan kimia, saluran pipa, klep, pump lan produk liyane. The core requirements for extrusion processing are: corrosion resistance, nyandhang resistance, kinerja stabil, kang mbutuhake extruder duwe resistance nyandhang banget lan resistance karat, and stable pressure control capacity.
For chemical pipelines and valves made of general corrosion-resistant engineering plastics (PPS, 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 (NGIPI, PI), the HTS SUPER series extruders are required. Its ultra-high torque and stable conveying capacity can cope with the high viscosity of high-end corrosion-resistant materials, lan meneng lan tong minyak klambi laser duwe resistance karat banget dhuwur lan nyandhang resistance, sing bisa nyukupi syarat panggunaan jangka panjang ing lingkungan kimia sing atos; kontrol suhu pas bisa supaya bosok termal saka bahan, njamin resistance karat lan resistance meksa prodhuk.
5. Masalah Umum lan Solusi ing Teknik Plastik Twin-Screw Extrusion Processing
Ing proses extrusion twin-screw nyata saka plastik engineering, amarga pengaruh bahan mentah, paramèter pangolahan, kinerja peralatan lan faktor liyane, macem-macem masalah asring kedadeyan, sing mengaruhi kualitas produk lan efisiensi produksi. Ngisor, kita bakal ngringkes masalah umum ing plastik engineering Processing extrusion, nganalisa penyebabe, lan menehi solusi sing cocog digabungake karo karakteristik extruders seri HTS kita, mbantu perusahaan ngatasi masalah pangolahan praktis lan ningkatake efisiensi produksi.
5.1 Masalah 1: Dekomposisi Termal lan Perubahan Warna Bahan
Gejala: Sajrone proses ekstrusi, materi katon kuning, ireng, karbonisasi lan fenomena liyane, lan prodhuk final wis discoloration, gelembung, retak lan cacat liyane, lan sifat mekanik sing suda. Masalah iki utamané disebabake sensitivitas plastik engineering kanggo overheating lan degradasi hidrolitik.
Nimbulaké: 1. Suhu ekstrusi dhuwur banget utawa suhu bagean tartamtu saka tong minyak dhuwur banget, asil dekomposisi termal saka materi; 2. Wektu panggonan materi ing extruder dawa banget, mimpin kanggo dadi panas banget lan dekomposisi; 3. Bahan mentahan ora garing sak tenane, lan kelembapan ing bahan nyebabake degradasi hidrolitik sajrone pangolahan suhu dhuwur; 4. Kacepetan meneng kurang banget, nyebabake gaya geser ora cukup lan wektu manggon sing luwih dawa; 5. Saluran aliran saka sirah mati diblokir, nyebabake akumulasi materi lan overheating lokal.
Solusi: 1. Nyetel suhu extrusion miturut jinis plastik engineering, strictly ngontrol suhu saben bagean saka tong minyak lan sirah mati ing sawetara optimal, lan nggunakake fungsi kontrol suhu tepat saka extruders seri HTS (presisi kontrol suhu ± 1 ℃) kanggo nyegah overheating lokal; 2. Tambah kacepetan meneng jumbuh (ing sawetara cocok kanggo materi) to shorten the residence time of the material. The HTS series extruders can reach a maximum speed of 1000rpm, which can effectively shorten the residence time to 1-3 menit; 3. Strengthen the drying treatment of raw materials, strictly control the moisture content below 0.1%-0.2%, and use the drying device matched with the HTS series extruders to prevent the raw materials from absorbing moisture again during feeding; 4. Check and clean the die head regularly to ensure the smooth flow channel, avoid material accumulation; 5. If the problem persists, adjust the screw element combination, increase the number of conveying elements, and reduce the number of mixing elements to speed up the material conveying and shorten the residence time.
5.2 Masalah 2: Uneven Dispersion of Modifiers
Gejala: The final product has uneven texture, obvious agglomeration of modifiers (kayata serat kaca, serat karbon), lan sifat mekanik (kekuwatan, toughness, nyandhang resistance) ora rata, sing ora bisa nyukupi syarat panggunaan. Masalah iki umum ing pangolahan plastik rekayasa sing dimodifikasi.
Nimbulaké: 1. Efek premixing saka bahan mentah kurang, lan modifiers sing ora seragam adhered kanggo lumahing resin; 2. Kacepetan meneng kurang banget, nyebabake gaya geser lan gaya kneading ora cukup, lan modifiers ora bisa kanthi rusak lan buyar; 3. Kombinasi unsur sekrup ora wajar, lan jumlah unsur campuran lan unsur shearing ora cukup; 4. Suhu ekstrusi sithik banget, materi ora rampung ilang, lan modifiers ora bisa seragam buyar ing matriks resin; 5. Ukuran partikel modifier gedhe banget utawa ora rata.
Solusi: 1. Ngoptimalake proses premixing, nambah kacepetan nyawiji (800-1200rpm) lan wektu nyampur (5-10 menit), 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. Tambah kacepetan meneng jumbuh, 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. Crush and sieve the modifier to ensure that its particle size is uniform (20-40 bolong) and meets the processing requirements.
5.3 Masalah 3: Wear of Screw and Barrel
Gejala: After a period of use, the extrusion capacity of the extruder decreases, the shear force and mixing effect are reduced, the product quality is unstable, and even the screw and barrel are stuck. This problem is mainly caused by the wear of high-hardness modifiers (kayata serat kaca, serat karbon) on the screw and barrel during the processing of reinforced engineering plastics.
Nimbulaké: 1. The screw and barrel are made of materials with poor wear resistance, which cannot resist the wear of high-hardness modifiers; 2. The filling amount of the modifier is too high (≥50%), and the wear is intensified; 3. The particle size of the modifier is too large, which increases the wear on the screw and barrel; 4. Tekanan ekstrusi dhuwur banget, kang nambah gesekan antarane materi lan meneng lan tong minyak; 5. Sekrup lan tong minyak ora dijaga kanthi rutin, lan turahan materi accelerates nyandhang.
Solusi: 1. Pilih extruders karo resistance nyandhang dhuwur, kayata seri HTS PLUS lan seri HTS SUPER. Sekrup lan tong digawe saka baja paduan tahan nyandhang sing diimpor lan ngalami perawatan komposit bimetal utawa perawatan cladding laser., kanthi kekerasan lumahing ≥65 HRC (HTS PLUS) and ≥70 HRC (HTS SUPER), kang èfèktif bisa nolak nyandhang saka modifiers hardness dhuwur; 2. Ngontrol jumlah ngisi modifier ing kisaran sing cukup. Yen jumlah ngisi sing dhuwur dibutuhake, pilih extruders seri HTS SUPER karo resistance nyandhang luwih; 3. Remuk lan sieve modifier kanggo nyuda ukuran partikel lan nyuda nyandhang; 4. Nyetel paramèter ekstrusi kanggo ngontrol tekanan ekstrusi ing kisaran optimal (5-15MPa), supaya tekanan banget; 5. Ajeg njaga sekrup lan tong minyak, ngresiki ampas materi ing wektu, lan aplikasi lenga pelumas kanthi tepat kanggo nyuda gesekan lan ngluwihi umur layanan. Kajaba iku, tim teknis profesional kita bisa nyedhiyani layanan deteksi nyandhang biasa kanggo meneng lan tong minyak, and put forward targeted replacement and maintenance suggestions.
5.4 Masalah 4: Ukuran Produk sing ora stabil lan Deformasi Dimensi
Gejala: Ukuran produk extruded (kayata granula, pipa, lembaran) ora rata, tingkat shrinkage ngluwihi standar (> 1,5%), lan produk wis deformasi, warpage lan fenomena liyane, kang mengaruhi Déwan lan nggunakake prodhuk.
Nimbulaké: 1. Suhu ekstrusi ora stabil, asil leleh ora rata lan plasticization saka materi, lan shrinkage ora rata nalika cooling; 2. Kacepetan ekstrusi ora stabil, leading to uneven extrusion amount and unstable product size; 3. The cooling speed is uneven, resulting in uneven internal and external stress of the product, leading to deformation; 4. The die head structure is unreasonable, the flow channel is not smooth, and the material flow is uneven; 5. The raw materials have high water absorption, and the moisture causes uneven shrinkage during processing.
Solusi: 1. Use the precise temperature control system of the HTS series extruders to ensure the stability of the extrusion temperature, and avoid temperature fluctuation; 2. Adjust the feeding speed and screw speed to ensure the stability of the extrusion speed, and use the frequency conversion speed regulation function of the HTS series extruders to realize the synchronous adjustment of feeding and extrusion; 3. Optimize the cooling process, ensure uniform cooling speed, adjust the cooling water temperature (20-30℃) and cooling time (2-5 menit) for strip cooling, and use air cooling or water spray cooling for pipes and sheets to avoid uneven cooling; 4. Check and optimize the die head structure, ensure the smooth flow channel, and adjust the die head temperature to ensure uniform material flow; 5. Strengthen the drying treatment of raw materials, strictly control the moisture content, and reduce the impact of moisture on product shrinkage.
5.5 Masalah 5: Low Extrusion Efficiency and High Energy Consumption
Gejala: The production capacity of the extruder is lower than the design standard, the energy consumption per unit product is high, and the production cost is increased, which affects the economic benefits of the enterprise.
Nimbulaké: 1. Kacepetan meneng kurang banget, the conveying capacity is insufficient; 2. Suhu ekstrusi sithik banget, the material viscosity is too high, the conveying resistance is increased, and the production capacity is reduced; 3. Kombinasi unsur sekrup ora wajar, the conveying efficiency is low; 4. The feeding device is blocked or the feeding speed is insufficient, resulting in insufficient feeding; 5. The screw and barrel are worn, the conveying capacity is reduced, and the energy consumption is increased.
Solusi: 1. Tambah kacepetan meneng jumbuh (ing sawetara cocok kanggo materi) to improve the conveying capacity and production efficiency. The HTS series extruders can reach a maximum speed of 1000rpm, which can significantly improve production efficiency; 2. Properly increase the extrusion temperature to reduce the material viscosity, reduce the conveying resistance, and improve the conveying efficiency; 3. Adjust the combination of screw elements, increase the number of conveying elements, optimize the screw lead and compression ratio, and improve the conveying efficiency. The modular screw design of the HTS series extruders can realize the quick adjustment of screw elements; 4. Check and clean the feeding device regularly, ensure the smooth feeding, and adjust the feeding speed to match the screw speed, avoid insufficient feeding; 5. Regularly detect the wear degree of the screw and barrel, replace the worn components in time, and maintain the conveying capacity of the extruder, reducing energy consumption. Kajaba iku, the HTS series extruders adopt an optimized structural design and high-efficiency motor, which can reduce energy consumption by 15%-20% dibandhingake karo extruders biasa.
6. Conclusion and Future Development Trend
Rekayasa plastik, minangka materi kinerja dhuwur tombol, are playing an increasingly important role in global industrial upgrading, and twin-screw extrusion technology is the core support for the high-quality processing of engineering plastics. The performance of extrusion equipment directly determines the quality, production efficiency and application effect of engineering plastic products. Our HTS series twin-screw extruders, including HTS BASIC, HTS PLUS and HTS SUPER, are specially designed for the processing characteristics of engineering plastics (sensitivity to overheating and hydrolytic degradation, high requirements on mixing and dispersing effect, high viscosity), with the advantages of high torque, high speed, kontrol suhu sing tepat, excellent wear resistance, wide application range and intelligent control. They can provide targeted processing solutions for different types of engineering plastics and different scales of enterprises, helping enterprises solve processing difficulties, improve product quality and production efficiency, and enhance market competitiveness.
Looking forward to the future, with the continuous upgrading of downstream industries such as automotive lightweight, electrical and electronic intelligence, new energy and medical high-endization, the demand for high-performance, functional and environmentally friendly engineering plastics will continue to grow, which will also put forward higher requirements on twin-screw extrusion technology and equipment. The future development trend of engineering plastics twin-screw extruders will be mainly reflected in four aspects:
Pisanan, intelligence and digitalization. Kanthi pangembangan Industri 4.0, extruders sekrup kembar bakal luwih terintegrasi karo teknologi cerdas kayata Internet of Things, data gedhe lan intelijen buatan. Extruders seri HTS bakal luwih ngoptimalake fungsi kontrol maya, mujudake pemantauan wektu nyata, analisis data, pangopènan prediktif lan imbuhan cerdas kabeh proses produksi, nyuda intervensi tenaga kerja, lan ningkatake efisiensi produksi lan konsistensi produk. Ing wektu sing padha, teknologi simulasi digital bakal digunakake digunakake ing desain lan debugging saka extruders, nyuda siklus riset lan pangembangan lan wektu debugging peralatan.
Kapindho, kinerja dhuwur lan efficiency dhuwur. Panjaluk kanggo plastik rekayasa dhuwur (kayata PEEK, PI) bakal terus nambah, kang bakal ningkataké terus-terusan nganyarke kinerja extruder. The future extruders will have higher torque, higher speed and more precise temperature control capacity, and the key components (screw, laras, kothak gear) will be further optimized to improve wear resistance, corrosion resistance and service life. Ing wektu sing padha, the energy consumption of the equipment will be further reduced, realizing high-efficiency and energy-saving production.
Third, customization and diversification. Different application fields and different products have increasingly personalized requirements for extrusion processing. The future extruders will adopt a more flexible modular design, which can quickly replace screw elements, die heads and other components according to customer needs, realizing the processing of multiple varieties and small batches. Ing wektu sing padha, we will provide more personalized customized solutions according to the special processing needs of customers, 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.