Со брзиот напредок на глобалната индустријализација, побарувачката за материјали со високи перформанси во автомобилската индустрија, електрични и електронски, изградба, медицинските и другите области се зголемуваат од ден на ден. Инженерска пластика, како клучен материјал со високи перформанси, постепено ги заменија традиционалните метални материјали и општата пластика во многу основни сценарија на примена поради нивните одлични механички својства, отпорност на топлина, отпорност на корозија, димензионална стабилност и обработливост. Технологијата на истиснување со две завртки е основната технологија за обработка на инженерските пластични соединенија, а изведбата на опремата за истиснување директно го одредува квалитетот, ефикасност на производството и ефект на примена на инженерски пластични производи.
Посветени сме на обезбедување професионални решенија за истиснување со два завртки за инженерска обработка на пластика, потпирајќи се на нашите независно развиени и произведени екструдери од серијата HTS со менувачи со висок вртежен момент, кои се специјално дизајнирани за карактеристиките на обработка и потребите за примена на инженерската пластика. Оваа статија сеопфатно ќе ги елаборира карактеристиките на изведбата, класификација, тешкотии во обработката на инженерската пластика, основната улога на технологијата за истиснување со двојни завртки во инженерската обработка на пластика, предностите на нашите екструдери од серијата HTS и нивното насочено прилагодување кон инженерската пластика, како и специфичните полиња за апликација, техники на обработка и заеднички проблеми и решенија. Со дополнување на деталните технички параметри, детали за обработка и случаи на примена во индустријата, статијата ќе биде збогатена да 3000-4000 зборови, обезбедување сеопфатна и професионална референца за претпријатијата за инженерска обработка на пластика, техничари и релевантни практичари.
1. Преглед на индустријата за инженерска пластика и основните карактеристики на изведбата
1.1 Тековна состојба и развојен тренд на индустријата за инженерска пластика
Инженерската пластика се однесува на класа на пластични материјали кои можат да се користат како структурни материјали и да носат механички оптоварувања во широк температурен опсег. Во споредба со општата пластика (како што е полиетилен ПЕ, полипропилен ПП, поливинил хлорид ПВЦ), инженерската пластика има поодлични сеопфатни перформанси, и може да ги исполни барањата за суровата употреба во индустриското производство и производството на производи со висока класа. Во последните години, поттикнати од надградбата на долните индустрии како што е автомобилската лесна тежина, електрична и електронска интелигенција, и медицински помагала со висока класа, глобалниот пазар на инженерска пластика покажа постојан и брз тренд на раст.
Според релевантните податоци од индустријата, големината на глобалниот пазар на инженерска пластика е надмината 100 милијарди американски долари, и се очекува да одржува сложена годишна стапка на раст од 7%-10% во следните пет години. Меѓу нив, Азија-Пацифик е најголемиот светски пазар за производство и потрошувачка на инженерска пластика, сметководство за повеќе од 55% на глобалниот пазарен удел, главно поради брзиот развој на автомобилската индустрија, електричната и електронската индустрија во Кина, Индија и други земји, како и континуирано подобрување на индустрискиот потпорен капацитет и нивото на технолошки иновации. Кина, како најголем светски потрошувач и производител на инженерска пластика, има огромна побарувачка на пазарот, а годишното производство и потрошувачка растат со двоцифрена стапка, особено на полето на нови енергетски возила, 5G комуникации, и медицински помагала, побарувачката за инженерска пластика со високи перформанси покажува експлозивен тренд на раст.
Развојниот тренд на индустријата за инженерска пластика главно се рефлектира во пет аспекти: прво, високи перформанси и функционалност. Со континуирано подобрување на барањата за користење во низводните полиња, инженерската пластика се развива кон поголема отпорност на топлина, поголема јачина, подобра отпорност на абење и специјални функции (како што е отпорност на пламен, антистатик, антибактериски, отпорност на зрачење), да се прилагодат на суровата работна средина на висока температура, висок притисок, корозија и зрачење; второ, лесен и интегриран. Во автомобилската, воздушната и другите области, со цел да се постигнат целите за заштеда на енергија и намалување на емисиите, инженерската пластика се повеќе се користи за замена на металните материјали, а интеграцијата на дизајнот на производите станува сè поголема и повисока, што може да го намали бројот на делови, поедноставување на процесот на производство и намалување на трошоците; трето, заштита на животната средина и можност за рециклирање. Со зајакнување на глобалните политики за заштита на животната средина и подобрување на свеста за заштита на животната средина, развој и примена на инженерска пластика што може да се рециклира, биоразградливата инженерска пластика и еколошките технологии за обработка станаа фокус на индустријата, намалување на загадувањето на животната средина предизвикано од пластичниот отпад; четврти, интелигенција и прецизност на опремата за обработка. Инженерската пластика има висока тежина на обработка и строги барања за квалитет, кои поставуваат повисоки барања за опремата за обработка. Интелигентен, прецизни и ефикасни екструдери со два завртки и автоматски производствени линии станаа мејнстрим на индустријата, остварување на следење во реално време, автоматско прилагодување на параметрите и предвидливо одржување на процесот на обработка; петти, диверзификација на полињата за примена. Инженерската пластика постепено се проширува од традиционалните автомобили, електрични и електронски полиња до нова енергија, медицински, воздушната, градежништво и други области кои се појавуваат, отворање нов пазарен простор.
На оваа позадина, Технологија на истиснување со две завртки, како основна технологија за обработка на инженерските пластични соединенија, стана клучот за подобрување на конкурентноста на претпријатијата за инженерска пластика. Инженерската пластика е чувствителна на прегревање и хидролитичка деградација, и имаат високи барања за температура на обработка, сила на смолкнување, прецизност на времето на престој и контрола на температурата. Нашите екструдери од серијата HTS се специјално дизајнирани за карактеристиките на обработка на инженерската пластика, со висок вртежен момент, голема брзина, прецизна контрола на температурата и одлична дисперзибилност, што може ефикасно да ги реши тешкотиите во обработката на инженерската пластика и да им помогне на претпријатијата да постигнат висок квалитет, ефикасно и стабилно производство.
1.2 Основни карактеристики на изведбата на инженерската пластика
Во споредба со општа пластика и метални материјали, инженерската пластика има уникатни сеопфатни перформанси, што ја одредува нивната широка примена во различни индустриски области. Основните карактеристики на изведбата на инженерската пластика главно се рефлектираат во следните пет аспекти, кои исто така поставуваат посебни барања за нивната технологија и опрема за обработка:
1.2.1 Одлична отпорност на топлина и отпорност на студ
Инженерската пластика има широк опсег на прилагодување на температурата, кои можат да одржуваат добри механички својства (силата, цврстина, цврстина) и во средини со високи и ниски температури. Во споредба со општата пластика, кои обично ги губат своите механички својства на 80-120℃, повеќето инженерски пластики можат да работат стабилно на 100-250℃, и некои специјална инженерска пластика (како што е ЅИР, ПИ) може да работи дури и на температури над 300℃. Во исто време, инженерската пластика, исто така, има добра отпорност на студ, кој може да одржува добра цврстина при ниски температури (под -40 ℃), и не се лесни за кршливи фрактури. Оваа изведба ја прави инженерската пластика погодна за употреба во средини со тешки температури, како што се делови за автомобилски мотор (висока температура) и надворешна електрична опрема (ниска температура).
Одличната отпорност на топлина на инженерската пластика главно се должи на нивната посебна молекуларна структура (како што се ароматични прстени, хетероциклични прстени) и силни меѓумолекуларни сили, што ги прави лесно да се топат и разградат на високи температури. Сепак, ова исто така носи одредени тешкотии во обработката: потребна е повисока температура на обработка за да се стопат и пластифицираат, и потребна е прецизна контрола на температурата за да се избегне термичко распаѓање.
1.2.2 Добра отпорност на корозија и издржливост
Инженерската пластика има одлична хемиска стабилност и отпорност на корозија, и не се лесно да се кородираат од киселини, алкалии, соли, органски растворувачи и други хемикалии. Во споредба со металните материјали, кои лесно се рѓосуваат и кородираат, инженерската пластика има подолг работен век во тешки хемиски средини. На пример, полиамид (PA) инженерската пластика е отпорна на повеќето органски растворувачи и слаби киселини и алкалии; поликарбонат (компјутер) инженерската пластика е отпорна на корозија од неоксидирачки киселини и соли; полифенилен сулфид (PPS) инженерската пластика е отпорна на корозија од речиси сите хемикалии освен силните оксидирачки киселини.
Покрај тоа, инженерската пластика има добра отпорност на временските услови и отпорност на стареење, и не се лесно да се деградираат и стареат под дејство на сончевата светлина, дожд, кислород и други фактори на животната средина, што обезбедува нивна долгорочна стабилна употреба во надворешни и сурови средини. Оваа изведба ја прави инженерската пластика широко користена во хемиската опрема, надворешна електрична опрема, автомобилски надворешни делови и други области.
1.2.3 Лесна обработка и висока производна ефикасност
Во споредба со металните материјали, инженерската пластика ги има предностите на лесната обработка, едноставен производствен процес и висока производна ефикасност. Металните материјали обично имаат потреба од сложени процедури за обработка како што е фалсификување, кастинг, обработка, кои имаат голема потрошувачка на енергија, ниска ефикасност и висока цена; додека инженерската пластика може да се обработи со истиснување, калапи со инјектирање, дување калапи и други методи, кои можат да реализираат масовно производство, поедноставување на процесот на производство, намалување на потрошувачката на енергија и трошоците за производство. На пример, циклусот на обработка на инженерски пластичен автомобилски дел со обликување со инјектирање е само неколку секунди до десетици секунди, додека циклусот на обработка на истиот метален дел може да трае од неколку часа до неколку дена.
Сепак, инженерската пластика, исто така, има одредени тешкотии во обработката: тие се чувствителни на прегревање и хидролитичка деградација, and are easy to decompose if the processing temperature is too high or the residence time is too long; at the same time, некои инженерски пластики (such as PA) have high water absorption, which affects the processing effect and product quality. Затоа, 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 (обично 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, медицински помагала, итн. The good dimensional stability of engineering plastics is mainly due to their high crystallinity, ниска апсорпција на вода (освен некои сорти како PA) и силни меѓумолекуларни сили.
Покрај тоа, повеќето инженерски пластики имаат одлични перформанси на електрична изолација, кои можат да одржат добри перформанси на изолација во широк температурен опсег и опсег на фреквенција, и не се лесни за спроведување на струја и лак. Ова ја прави инженерската пластика широко користена во електричните и електронските полиња, како што се ожичување одбори, кабелски врски, конектори, релеи, мотори и други електрични компоненти.
1.2.5 Мала тежина и висока специфична цврстина, Извонредна отпорност на абење
Инженерската пластика има карактеристики на мала тежина (густина е 1/3-1/5 од метални материјали) и висока специфична јачина (јачината по единица тежина е еквивалентна или дури повисока од онаа на металните материјали). На пример, специфичната јачина на полиамид засилен со стаклени влакна (PA66+GF30) е повисока од онаа на обичниот јаглероден челик, which can effectively reduce the weight of products while ensuring the mechanical performance. This performance is particularly important in the automotive, aerospace and other fields that pursue lightweight and energy saving, which can reduce fuel consumption and carbon emissions.
Во исто време, engineering plastics also have outstanding wear resistance and friction resistance, and the friction coefficient is small, which can be used in the production of wear-resistant parts (како што се запчаниците, лежишта, sliding blocks) without additional lubrication or with less lubrication, reducing the maintenance cost of products. На пример, polyoxymethylene (ПОМ) 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, и изберете соодветна опрема за истиснување и техники за обработка:
1.3.1 Classification by Performance Level
According to the performance level, engineering plastics can be divided into general engineering plastics and special engineering plastics.
- General Engineering Plastics: They are the most widely used engineering plastics, with relatively mature production technology, moderate price and good comprehensive performance. The main varieties include polyamide (PA), поликарбонат (компјутер), polyoxymethylene (ПОМ), полиетилен терефталат (ПЕТ), polybutylene terephthalate (PBT), итн. General engineering plastics are mainly used in automotive, електрични и електронски, home appliances and other fields, such as automotive parts, електрични конектори, home appliance shells, итн.
- Special Engineering Plastics: They have more excellent performance (such as higher heat resistance, отпорност на корозија, механички својства) than general engineering plastics, but the production technology is complex and the price is high. The main varieties include polyphenylene sulfide (PPS), полиетер етер кетон (ЅИРНЕТЕ), polyimide (ПИ), polysulfone (PSU), polyethersulfone (PES), итн. Special engineering plastics are mainly used in high-end fields such as aerospace, медицински помагала, new energy, and chemical equipment, such as aerospace components, medical implants, high-temperature resistant electrical components, итн.
1.3.2 Classification by Chemical Structure
According to the chemical structure of the molecular chain, engineering plastics can be divided into polyamide (PA), поликарбонат (компјутер), polyoxymethylene (ПОМ), polyester (ПЕТ, PBT), полифенилен сулфид (PPS), полиетер етер кетон (ЅИРНЕТЕ), итн. Each type of engineering plastic has its own unique performance characteristics and processing requirements:
- Полиамид (PA): Also known as nylon, it has excellent mechanical strength, отпорност на абење, цврстина и хемиска отпорност, но има висока апсорпција на вода, што влијае на димензионалната стабилност. Заедничките сорти вклучуваат PA6, PA66, PA11, PA12, итн. Широко се користи во автомобилски делови (запчаници, лежишта, доводни колектори), електрични конектори, текстилни влакна, итн.
- Поликарбонат (компјутер): Има одлична транспарентност, сила на удар, отпорност на топлина и електрична изолација, но има слаба отпорност на абење и лесно се гребе. Широко се користи во електрични и електронски полиња (жици одбори, капаци за светилки), автомобилски полиња (леќи за фарови, инструмент табли), медицински области (медицински контејнери), итн.
- Полиоксиметилен (ПОМ): Има одлична отпорност на абење, отпорност на триење, димензионална стабилност и механичка сила, и не е лесно да се апсорбира вода. Познато е како “plastic steel” и широко се користи во автомобилски делови (запчаници, sliding blocks), електрични компоненти (прекинувачи, лежишта), механички делови, итн.
- Полиестер (ПЕТ, PBT): ПЕТ има одлична транспарентност, отпорност на топлина и механичка сила, а главно се користи во влакна, филмови, шишиња и други полиња; PBT има одлична хемиска отпорност, електрична изолација и флуидност на обработка, и е широко користен во електрични и електронски полиња (конектори, релеи), автомобилски делови, итн.
- Полифенилен сулфид (PPS): Има одлична отпорност на топлина (температура за долготрајна употреба до 200-220℃), отпорност на корозија, отпорност на пламен и електрична изолација, но има слаба цврстина. Широко се користи во електрични компоненти отпорни на високи температури, делови за автомобилски мотор, хемиска опрема, итн.
- Полиетер етер кетон (ЅИРНЕТЕ): Има одлични сеопфатни перформанси, температура за долготрајна употреба до 250-300℃, добра отпорност на корозија, механичка сила и биокомпатибилност. Главно се користи во полиња со висока класа, како што е воздушната, medical implants, и електрични компоненти отпорни на високи температури.
1.3.3 Класификација по поле на апликација
Според полето за апликација, инженерската пластика може да се подели на инженерска пластика од автомобилска класа, електротехничка пластика, инженерска пластика од медицинско одделение, инженерска пластика од авионска класа, итн. Различни полиња за примена имаат различни барања за перформансите на инженерската пластика. На пример, инженерската пластика од автомобилска класа бара добра отпорност на топлина, сила на удар и отпорност на временските услови; Електротехничката пластика бара добра електрична изолација и отпорност на пламен; инженерската пластика од медицинско одделение бара добра биокомпатибилност и стерилитет; Инженерската пластика од типот на воздухопловството бара добра отпорност на високи температури, мала тежина и висока јачина.
2. Основна технологија за обработка на инженерска пластика: Технологија на истиснување со две завртки
Обработката на инженерска пластика главно вклучува истиснување, калапи со инјектирање, дување калапи, калапи и други методи, меѓу кои технологијата на истиснување со два завртки е основната технологија за производство на инженерски пластични соединенија (како што е модифицираната инженерска пластика, reinforced engineering plastics) and semi-finished products (such as pipes, листови, fibers). Во споредба со технологијата за истиснување со еден шраф, twin-screw extrusion technology has the advantages of strong shearing force, good mixing effect, прецизна контрола на температурата, 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, 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. Покрај тоа, некои инженерски пластики (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: прво, 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℃; второ, кратко време на престој, 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 (обично 1-5 минути) и прецизна контрола на температурата, which are more suitable for engineering plastics processing than single-screw extruders (време на престој 5-10 минути).
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, јаглеродни влакна, talc, ретарданти на пламен, компатибилизатори) to improve the performance of the product (such as reinforcing, toughening, flame retardant). На пример, 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. Покрај тоа, the modular design of the twin-screw can freely combine different screw elements (such as conveying elements, елементи за мешање, 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, ЅИРНЕТЕ) have high viscosity and poor processing fluidity, кои бараат од екструдерот да има силен преносен капацитет и капацитет за контрола на притисокот за да се обезбеди непречен напредок на истиснувањето. Ако преносниот капацитет е недоволен или контролата на притисокот е нестабилна, тоа ќе предизвика нерамномерна брзина на истиснување, нестабилна големина на производот, па дури и блокада на опремата.
Екструдерите со две завртки имаат силен преносен капацитет и стабилен капацитет за контрола на притисокот. Преплетувањето на двојните завртки може да генерира силна пумпа на сила, кои можат ефикасно да пренесат инженерски пластични материјали со висок вискозитет; at the same time, екструдерот е опремен со високопрецизен сензор за притисок, кој може да го следи притисокот на истиснување во реално време и автоматски да ја прилагоди брзината на завртката и брзината на напојување за да обезбеди стабилност на притисокот на истиснување и непречен напредок на обработката.
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, што вклучува интеракција на повеќе фактори како што е температурата, притисок, сила на смолкнување и време. 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, цевки, листови, 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, компјутер, ПОМ), modifiers (such as glass fiber, јаглеродни влакна, talc, ретарданти на пламен), компатибилизатори, лубриканти и други адитиви. Чекорите на предтретман се како што следува:
- Третман на сушење: Most engineering plastics (such as PA, PBT, PPS) have high water absorption, а влагата во суровините ќе предизвика хидролитичка деградација при обработка на висока температура, што резултира со дефекти на производот (како што се меурчиња, пукнатини, намалени механички својства). Затоа, суровините мора да се исушат пред обработката. Температурата и времето на сушење се одредуваат според видот на инженерската пластика: на пример, PA6 се суши на 80-100℃ за 4-6 часови, PA66 се суши на 100-120℃ за 6-8 часови, PBT се суши на 120-140℃ за 2-4 часови, PPS се суши на 150-160℃ за 3-5 часови. Подолу треба да се контролира содржината на влага во исушените суровини 0.1%-0.2%.
- Третман со претходно мешање: Според односот на формулата, исушената инженерска пластична смола, модификаторите и адитивите се ставаат во мешалка со голема брзина за претходно мешање. Целта на претходното мешање е да ги направи модификаторите и адитивите рамномерно да се прилепуваат на површината на честичките од смолата, подобрување на ефектот на мешање за време на истиснување, и избегнувајте локална агломерација на модификатори. Брзината на мешање е генерално 800-1200 вртежи во минута, а времето на мешање е 5-10 минути. За некои модификатори со слаба компатибилност (како што се стаклени влакна и PA), треба да се додаде компатибилизатор за време на претходно мешање за да се подобри компатибилноста помеѓу модификаторот и смолата.
- Дробење и просејување: За инженерски пластични смоли со голема големина на честички или модификатори со нерамна големина на честички (such as glass fiber), Третманот со дробење и просејување треба да се изврши за да се обезбеди униформност на суровините и да се избегне влијанието на ефектот на мешање и дисперзија за време на истиснување. Големината на честичките на смачканите суровини треба да се контролира на 20-40 мрежа.
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 Топење, 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, а волуменот на шуплината за истиснување постепено се намалува долж насоката на оската. When the screws rotate, the materials are gradually compressed under the action of the screws and the barrel, а притисокот во шуплината за истиснување постепено се зголемува (generally 5-15MPa).
Во исто време, the materials are subjected to strong shear force and friction force generated by the relative movement between the screws and the barrel, како и помеѓу летовите на завртката. 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 (дел за хранење, 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. На пример, 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, листови, 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, цевки, листови). 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: for strips (granule production), water tank cooling is usually used, and the cooling water temperature is controlled at 20-30℃, and the cooling time is 2-5 минути; for pipes and sheets, air cooling or water spray cooling is used, and the cooling speed should be controlled to avoid product deformation due to uneven cooling. Rapid cooling can make the semi-finished products solidify quickly, maintain the shape and size of the products, and improve the mechanical properties of the products.
2.2.6 Cutting and Post-Processing
After cooling and solidification, the semi-finished products are processed into the final product through cutting or other post-processing steps. For the production of engineering plastic compounds (granules), the cooled strips are sent to a granulator for cutting, and the granulator is equipped with a rotary knife, 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.
Покрај тоа, 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, отпорност на топлина, 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, главно вклучувајќи ги карактеристиките на суровината, formula ratio, premixing effect, параметри на истиснување и структура на главата на матрицата. 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 Карактеристики на суровини
Типот, големина на честички, moisture content and purity of raw materials have a great impact on the extrusion effect. На пример, 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, прашина) 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. The type and dosage of modifiers should be determined according to the performance requirements of the product. На пример, adding 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 вртежи во минута, the mixing time is 5-10 минути, and the mixing temperature is controlled at 40-60℃ (appropriate temperature can improve the adhesion of additives and promote uniform mixing).
2.3.4 Параметри на истиснување
Extrusion parameters are the most important factors affecting the extrusion effect, главно вклучувајќи ја брзината на завртката, температура на истиснување и притисок на истиснување.
- Брзина на завртката: The screw speed of twin-screw extruders for engineering plastics generally ranges from 100 до 1000 вртежи во минута. Our HTS series extruders can reach a maximum speed of 1000 вртежи во минута. Колку е поголема брзината на завртката, толку е поголема силата на смолкнување и силата на триење што ги примаат материјалите, the better the mixing and dispersing effect of modifiers, and the higher the production efficiency. Сепак, ако брзината на завртката е превисока, времето на престој на материјалите во шуплината за истиснување е прекратко, resulting in incomplete melting of the resin, insufficient mixing of materials, and uneven product quality; ако брзината на завртката е премногу мала, силата на смолкнување и силата на триење се недоволни, 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, ЅИРНЕТЕ), 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. Температурата на делот за хранење е пониска (slightly higher than the drying temperature of the raw materials), which is mainly to prevent the materials from caking and ensure smooth feeding; температурата на делот за топење е средна, 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.
- Притисок на истиснување: The extrusion pressure of engineering plastics twin-screw extrusion generally ranges from 5 to 15MPa. Притисокот во шуплината за истиснување главно се одредува со односот на компресија на завртката, големината на дупката на матрицата и брзината на завртката. Колку е поголем притисокот на истиснување, the better the mixing and dispersing effect of materials, and the denser the product. Сепак, if the pressure is too high, ќе ја зголеми потрошувачката на енергија и абењето на опремата, and even cause the die head to block; ако притисокот е премногу низок, the materials cannot be fully compressed and mixed, the product is loose, and the performance is unstable. The extrusion pressure should be adjusted according to the type of engineering plastic and the shape of the product: for high-viscosity materials and products with small die holes, a higher extrusion pressure is needed.
2.3.5 Структура на главата на умре
The die head structure mainly includes the shape, size and number of die holes, which directly affects the shaping effect and quality of the product. For the production of engineering plastic compounds (granules), the die head should be equipped with multiple uniform die holes, and the size of the die holes should be matched with the particle size of the product; for the production of pipes and sheets, the die head should be designed according to the shape and size of the product, and the flow channel of the die head should be smooth to avoid material accumulation and local overheating. The die head should also be equipped with a temperature control device to ensure the uniform temperature of the die head and the stable shaping of the product.
3. Our 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, 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, High Production Efficiency
Engineering plastics have high viscosity and poor processing fluidity, which require the extruder to have strong torque and conveying capacity. Our HTS series extruders adopt high-torque gearboxes independently developed and manufactured by us (HTS PLUS series and HTS SUPER series) or imported from leading European manufacturers (HTS BASIC series), with a specific torque of 14Nm/cm³, which is much higher than that of ordinary twin-screw extruders (general torque is 8-12Nm/cm³). The high torque design ensures that the extruder can stably convey high-viscosity engineering plastic materials, avoid material accumulation and equipment blockage, and improve the stability of the extrusion process.
Во исто време, the HTS series extruders have a high speed design, with a maximum speed of up to 1000rpm. The high speed can generate strong shear force and mixing force, which can fully break the agglomerates of modifiers, make the modifiers uniformly dispersed in the resin matrix, and improve the mixing and dispersing effect. Покрај тоа, the high speed design also greatly improves the production efficiency: compared with ordinary extruders, the production efficiency of HTS series extruders can be increased by 30%-50%, which can meet the large-scale production needs of engineering plastics enterprises.
3.1.2 Short Residence Time, Effectively Avoiding Thermal Degradation
As engineering plastics are sensitive to overheating and hydrolytic degradation, the residence time of materials in the extruder is crucial. Our HTS series extruders adopt an optimized screw structure and barrel design, with a short residence time of only 1-3 минути, which is much shorter than that of ordinary twin-screw extruders (5-10 минути) and single-screw extruders (10-15 минути). 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.
Покрај тоа, 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, системот навреме ќе издаде аларм, and even automatically adjust the heating power or shut down the equipment if necessary, за да се избегне дефект на опремата и проблеми со квалитетот на производот.
Покрај тоа, 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 Одличен ефект на мешање и дисперзија
The HTS series extruders adopt an intermeshing co-rotating twin-screw structure, со разумен чекор на завртката, 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 (such as glass fiber, јаглеродни влакна, 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%, which is much higher than that of ordinary twin-screw extruders (85%-90%).
The screw of the HTS series extruders adopts a modular design, and different types of screw elements (such as conveying elements, елементи за мешање, shearing elements) can be freely combined according to the type of engineering plastic and modifier. На пример, 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 (HTS BASIC series) and ≥70 HRC (HTS PLUS series and HTS SUPER series), 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.
Покрај тоа, 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 Широк опсег на примена, 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, компјутер, ПОМ, ПЕТ, PBT) and special engineering plastics (PPS, ЅИРНЕТЕ, 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, итн.
The modular design of the HTS series extruders (завртка, буре, умре глава, итн.) 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. Покрај тоа, the HTS series extruders can also be matched with different auxiliary equipment (such as high-speed mixers, сушилници, ладилници, гранулатори, screening machines, packaging machines) да формира целосна автоматска производна линија, 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, што е едноставно и интуитивно, лесен за ракување. The system can store multiple sets of product formulas and processing parameters. When customers produce different types of engineering plastics, тие треба само да ја повикаат соодветната формула и параметри, без повеќекратно дебагирање, which saves time and improves production efficiency.
The system is also equipped with a real-time monitoring function, which can monitor the key parameters of the extrusion process (such as temperature, притисок, брзина на завртката, feeding speed) in real time, and record the production data (such as output, processing time) for later query and analysis. For the HTS SUPER series extruders, we also provide a cloud control function, which can realize remote parameter adjustment, production data monitoring and predictive maintenance of equipment, остварување интелигентно управување со производството.
Покрај тоа, the HTS series extruders adopt a reasonable structural design, which makes the maintenance more convenient. Завртката, буре, die head and other components can be disassembled and assembled quickly, which reduces the maintenance time and labor intensity. Нашиот тим за услуги по продажбата ќе обезбеди професионална инсталација, пуштање во работа и услуги за обука за клиентите, осигурувајќи дека клиентите можат непречено да ја користат опремата.
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: HTS BASIC series, HTS PLUS series and HTS SUPER series. 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, низок шум, high efficiency and long service life. The medium-torque design (специфичен вртежен момент 10-12 Nm/cm³) can meet the processing needs of most general engineering plastics (such as PA6, PA66, ПОМ, ПЕТ, 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, 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, автоматска контрола на температурата, 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, умре глави, уреди за хранење, 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 Екструдери од серијата HTS PLUS: High-Performance Choice for Engineering Plastics and Modified Products
The HTS PLUS series extruders adopt high-torque gearboxes independently developed and manufactured by us, with a specific torque of 14Nm/cm³, which has stronger torque and load-bearing capacity than the HTS BASIC series. This series of extruders is mainly designed for the processing of high-performance engineering plastics, high-modified engineering plastics and special engineering plastics (such as PPS), which is suitable for medium and large-scale engineering plastics processing enterprises that pursue high performance and high efficiency.
The HTS PLUS series extruders have a screw diameter ranging from 65mm to 110mm, a compression ratio of 5～10, and a screw speed range of 200～800 rpm. The screw and barrel adopt bimetallic composite treatment, 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, high-modified engineering plastics and special engineering plastics (such as PPS). This series of extruders has excellent mixing and dispersing effect, short residence time and high production efficiency, which can effectively solve the processing difficulties of high-viscosity and high-modified engineering plastics, and help enterprises improve product quality and production efficiency.
3.2.3 HTS SUPER Series Extruders: Top-End Choice for High-End Engineering Plastics
The HTS SUPER series extruders adopt the latest ultra-high torque transmission device independently developed by us, with a specific torque of 14Nm/cm³ and a maximum speed of up to 1000rpm. Aiming at the high torque and high speed characteristics of this series, the structural design of each key component of the extruder has been completely optimized, which is our highest-end extruder series, representing the advanced level of China’s extruder development. This series of extruders is mainly designed for the processing of high-end special engineering plastics (како што е ЅИР, ПИ, 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 (цврстина на површината ≥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, which can realize remote parameter adjustment, следење на податоците за производството, predictive maintenance of equipment and data analysis, остварување интелигентно управување со производството.
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 минути) and precise temperature control can effectively avoid the thermal decomposition of special engineering plastics, ensuring the excellent performance of the product. Покрај тоа, 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, претпријатијата треба сеопфатно да ги земат предвид сопствените производствени потреби, видови производи, processing scale, budget and other factors to ensure that the selected equipment can meet the actual processing needs and bring maximum economic benefits. Следниве се некои конкретни предлози за избор:
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, ПОМ, ПЕТ, 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 (ЅИРНЕТЕ, ПИ, 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) to avoid waste of equipment resources and energy.
3.3.3 Consider the Modification Demand and Mixing Effect
If the enterprise’s main products are modified engineering plastics, the mixing and dispersing effect of the extruder is the key factor to be considered. For products that need to add a variety of modifiers (such as flame retardants, компатибилизатори, reinforcing agents) at the same time, it is necessary to select extruders with excellent mixing performance, such as HTS PLUS series and HTS SUPER series with modular mixing screw elements. These two series can freely combine conveying elements, mixing elements and shearing elements according to the type of modifier, adjust the mixing intensity and residence time, and ensure that various modifiers are uniformly dispersed in the resin matrix. На пример, when processing flame-retardant modified PBT, 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. Покрај тоа, 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, and its intelligent control and long service life can reduce labor cost and maintenance cost in the later period, which is suitable for large-scale enterprises with sufficient budget and focus on high-end market. Покрај тоа, enterprises should also consider the after-sales service of the equipment. Our HTS series extruders provide a complete after-sales service system, вклучувајќи ја и инсталацијата, пуштање во работа, техничка обука, regular maintenance and quick replacement of spare parts, which can reduce the later operation risk of enterprises.
3.3.5 Consider the Compatibility with Auxiliary Equipment
Twin-screw extrusion processing of engineering plastics needs to be matched with a series of auxiliary equipment, such as raw material drying equipment, миксер со голема брзина, cooler, granulator, screening machine, packaging machine, итн. When selecting the 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. На пример, 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
Инженерска пластика, with their excellent comprehensive performance, have been widely used in automotive, електрични и електронски, медицински, воздушната, хемиски, construction and other fields. Different application fields have different requirements on the performance of engineering plastic products, which also puts forward different requirements on extrusion processing equipment. Подолу, we will elaborate on the application characteristics of engineering plastics in major fields and the matching HTS series extruder solutions, providing targeted reference for enterprises in different fields.
4.1 Automotive Field: Lightweight, High Temperature Resistance and Wear Resistance
With the development of automotive lightweight and energy-saving and emission-reduction, engineering plastics have become an important material for automotive parts, gradually replacing traditional metal materials. The engineering plastics used in the automotive field mainly include PA, ПОМ, компјутер, PBT, PPS, итн., 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, отпорност на абење, dimensional stability and low VOC (испарливи органски соединенија), 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, панели на вратите, air ducts) made of general engineering plastics (PA6, ПОМ, 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 (ЅИРНЕТЕ, ПИ), the HTS SUPER series extruders are required. Its ultra-high torque, precise temperature control and short residence time can avoid thermal decomposition of high-temperature resistant materials, ensure the insulation performance and corrosion resistance of the product, and meet the strict requirements of new energy vehicles on parts performance.
Студија на случај: A large automotive parts manufacturer specializing in new energy vehicle battery parts selected our HTS SUPER series extruders (screw diameter 100mm) to process carbon fiber reinforced PEEK battery shells. The PEEK material has high viscosity and high temperature resistance, and the carbon fiber filling amount reaches 40%, which has extremely high requirements on extrusion equipment. The HTS SUPER series extruders, with their ultra-high torque of 14Nm/cm³ and maximum speed of 1000rpm, generate strong shear force and mixing force, 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 минути) 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% до 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. Engineering plastics are mainly used in electrical connectors, жици одбори, релеи, мотори, кабелски врски, lamp covers and other components. The core requirements for extrusion processing are: excellent electrical insulation, отпорност на пламен, димензионална стабилност, corrosion resistance and low toxicity, which require the extruder to have precise temperature control, good mixing and dispersing effect and strict quality control capacity.
For general electrical components (such as cable ties, конектори) made of general engineering plastics (PA6, PBT, компјутер), the HTS BASIC series extruders are suitable. Its flexible configuration can match different die heads to produce components of different shapes and sizes; the precise temperature control ensures the electrical insulation performance of the product, and the low cost can meet the mass production needs of general electrical components. For high-precision electrical components (such as relays, motor windings) made of flame-retardant modified engineering plastics (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), the HTS SUPER series extruders are required. 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, ЅИРНЕТЕ, PSU, итн., which are mainly used in medical containers, медицински катетри, medical implants, surgical instruments and other products. The core requirements for extrusion processing are: high precision, no pollution, стабилни перформанси, 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, ПИ, PSU, PES, итн., 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, стабилни перформанси, 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, and the remote monitoring and predictive maintenance function can ensure the stable operation of equipment in long-term continuous production; the customizable configuration can meet the special processing needs of various aerospace components, ensuring the high performance and high reliability of the product.
4.5 Chemical Field: Corrosion Resistance and Wear Resistance
The chemical field has harsh working environment, and engineering plastics used in the chemical field must have excellent corrosion resistance, отпорност на абење, high temperature resistance and pressure resistance. The main engineering plastics used in the chemical field include PPS, ЅИРНЕТЕ, PVDF (polyvinylidene fluoride), итн., which are mainly used in chemical equipment, pipelines, вентили, pumps and other products. The core requirements for extrusion processing are: отпорност на корозија, отпорност на абење, стабилни перформанси, which require the extruder to have excellent wear resistance and corrosion resistance, 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 (ЅИРНЕТЕ, ПИ), 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, а завртката и цевката обложени со ласер имаат исклучително висока отпорност на корозија и отпорност на абење, што може да ги исполни барањата за долгорочна употреба во сурови хемиски средини; прецизната контрола на температурата може да избегне термичко распаѓање на материјалите, обезбедување на отпорност на корозија и отпорност на притисок на производот.
5. Заеднички проблеми и решенија во инженерската пластика со истиснување со два завртки
Во вистинската обработка со истиснување со две завртки на инженерска пластика, поради влијанието на суровините, параметри за обработка, перформанси на опремата и други фактори, често се јавуваат разни проблеми, кои влијаат на квалитетот на производот и ефикасноста на производството. Подолу, ќе ги сумираме вообичаените проблеми во инженерската обработка на истиснување на пластика, анализирајте ги нивните причини, and provide corresponding solutions combined with the characteristics of our HTS series extruders, helping enterprises solve practical processing problems and improve production efficiency.
5.1 Problem 1: Thermal Decomposition and Discoloration of Materials
Symptoms: During the extrusion process, the material appears yellowing, blackening, carbonization and other phenomena, and the final product has discoloration, меурчиња, cracks and other defects, and the mechanical properties are significantly reduced. This problem is mainly caused by the sensitivity of engineering plastics to overheating and hydrolytic degradation.
Причини: 1. The extrusion temperature is too high or the temperature of a certain section of the barrel is too high, resulting in thermal decomposition of the material; 2. The residence time of the material in the extruder is too long, leading to excessive heating and decomposition; 3. The raw materials are not dried thoroughly, and the moisture in the materials causes hydrolytic degradation during high-temperature processing; 4. The screw speed is too low, resulting in insufficient shear force and prolonged residence time; 5. The flow channel of the die head is blocked, resulting in material accumulation and local overheating.
Решенија: 1. Adjust the extrusion temperature according to the type of engineering plastic, strictly control the temperature of each section of the barrel and die head within the optimal range, and use the precise temperature control function of the HTS series extruders (прецизност за контрола на температурата ± 1℃) to avoid local overheating; 2. Зголемете ја брзината на завртката соодветно (within the range suitable for the material) 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 минути; 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 Problem 2: Uneven Dispersion of Modifiers
Symptoms: The final product has uneven texture, obvious agglomeration of modifiers (such as glass fiber, јаглеродни влакна), and the mechanical properties (силата, цврстина, отпорност на абење) are uneven, which cannot meet the use requirements. This problem is common in the processing of modified engineering plastics.
Причини: 1. The premixing effect of raw materials is poor, and the modifiers are not uniformly adhered to the surface of the resin; 2. The screw speed is too low, 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.
Решенија: 1. Optimize the premixing process, зголемете ја брзината на мешање (800-1200вртежи во минута) and mixing time (5-10 минути), 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. Зголемете ја брзината на завртката соодветно, 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 мрежа) and meets the processing requirements.
5.3 Problem 3: Wear of Screw and Barrel
Symptoms: 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 (such as glass fiber, јаглеродни влакна) on the screw and barrel during the processing of reinforced engineering plastics.
Причини: 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. 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.
Решенија: 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. Покрај тоа, 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 Problem 4: Unstable Product Size and Dimensional Deformation
Symptoms: The size of the extruded product (such as granules, цевки, листови) 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.
Причини: 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, 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.
Решенија: 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 минути) 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 Problem 5: Low Extrusion Efficiency and High Energy Consumption
Symptoms: 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.
Причини: 1. The screw speed is too low, the conveying capacity is insufficient; 2. The extrusion temperature is too low, the material viscosity is too high, the conveying resistance is increased, and the production capacity is reduced; 3. The combination of screw elements is unreasonable, 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, се намалува преносниот капацитет, and the energy consumption is increased.
Решенија: 1. Зголемете ја брзината на завртката соодветно (within the range suitable for the material) 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. Покрај тоа, the HTS series extruders adopt an optimized structural design and high-efficiency motor, which can reduce energy consumption by 15%-20% compared with ordinary extruders.
6. Conclusion and Future Development Trend
Инженерска пластика, како клучен материјал со високи перформанси, 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, ефикасност на производството и ефект на примена на инженерски пластични производи. Our HTS series twin-screw extruders, вклучувајќи 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, голема брзина, прецизна контрола на температурата, 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, електрична и електронска интелигенција, 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:
Прво, intelligence and digitalization. With the development of Industry 4.0, twin-screw extruders will be more integrated with intelligent technologies such as Internet of Things, big data and artificial intelligence. The HTS series extruders will further optimize the cloud control function, realize real-time monitoring, data analysis, predictive maintenance and intelligent adjustment of the entire production process, reduce labor intervention, and improve production efficiency and product consistency. Во исто време, digital simulation technology will be widely used in the design and debugging of extruders, reducing the research and development cycle and debugging time of equipment.
Второ, high performance and high efficiency. The demand for high-end engineering plastics (како што е ЅИР, ПИ) will continue to increase, which will promote the continuous upgrading of extruder performance. The future extruders will have higher torque, higher speed and more precise temperature control capacity, and the key components (завртка, буре, gearbox) will be further optimized to improve wear resistance, corrosion resistance and service life. Во исто време, the energy consumption of the equipment will be further reduced, realizing high-efficiency and energy-saving production.
Трето, 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. Во исто време, we will provide more personalized customized solutions according to the special processing needs of customers, meeting the diverse market demands.
Четврто, 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.