Thaum lub sijhawm ua cov yeeb nkab extrusion, cov pa roj yuav tsum tau tso tawm ntawm cov yaj. Yog tias cov pa roj no tsis tuaj yeem tso tawm raws sijhawm, cov qhov tsis zoo xws li cov qhov hws, cov npuas, thiab qhov tsis zoo ntawm qhov chaw yuav tshwm sim ntawm qhov chaw lossis sab hauv cov khoom yeeb nkab, uas cuam tshuam loj heev rau cov khoom siv lub cev thiab cov khoom siv kho tshuab, cov khoom siv tshuaj lom neeg, thiab cov khoom siv hluav taws xob ntawm cov yeeb nkab.
Muaj 1 txog 2 lub qhov cua ntawm qhov chaw pub mis thiab lub taub hau tshuab kom tshem tawm cov dej noo thiab lwm yam volatile hauv cov khoom siv molten extruded. Txawm li cas los xij, qee qhov qhib ntawm cov thooj voos kheej kheej hlau feem ntau tshwm sim. Ib qho teeb meem feem ntau yog cov khoom tawm ntawm qhov chaw tso pa tawm. Ib qho me me ntawm cov khoom yuav cuam tshuam rau qhov tso tawm ntawm cov volatile thiab cuam tshuam rau qhov zoo ntawm cov khoom; ib qho loj ntawm cov khoom yuav thaiv qhov chaw tso pa tawm thiab txawm tias ua rau lub sijhawm tsis ua haujlwm.
Feem ntau, muaj ob qho laj thawj rau kev pub cov yeeb nkab extruder. Ib qho yog qhov tsim ntsia hlau tsis tsim nyog, uas ua rau cov khoom ntws rov qab ntawm qhov chaw nres nkoj; qhov thib ob yog qhov chaw nres nkoj qhov chaw nres nkoj qhov tsim nqaim. Cov khoom siv yaj yog "dai" thaum nws dhau los ntawm qhov chaw nres nkoj.

DWC Corrugated yeeb nkab extrusion kab

Ua ntej tshaj plaws, koj tuaj yeem pom seb cov khoom siv hauv lub ntsia hlau puas ntws rov qab los ntawm qhov cua. Hauv feem ntau cov extruders uas muaj qhov cua, koj tuaj yeem pom cov yaj txav mus rau pem hauv ntej hauv lub ntsia hlau. Raws li qhov xwm txheej ib txwm muaj, qib ntawm kev sau ntawm qhov ntsia hlau nrog cov khoom siv tsis pub tshaj 50%. Yog tias nws tshaj, nws yuav cuam tshuam rau qhov cuam tshuam ntawm cov pa tawm thiab ua rau cov ntaub nthuav tawm ntawm qhov chaw tso pa tawm; thaum nws tsawg dua 50%, lub ntsia hlau tuaj yeem ua haujlwm feem ntau. Cov khoom siv tsis zoo yuav ua rau los ntawm kev tsim tsis tsim nyog ntawm qhov chaw tso pa tawm lossis cov khoom shunt.

Cov Yam Cuam Tshuam Rau Kev Tshem Tawm Cov Khoom Siv ntawm Cov Yeeb Nkab Extruder thiab Cov Kev Daws Teeb Meem

1. Qhov tseem ceeb ntawm cov ntsia hlau
Cov ntsia hlau tso pa tawm feem ntau siv ntau theem tsim. Qhov zoo ntawm tus qauv no yog tias qhov chaw tso pa tawm nyob rau hauv qhov siab ib txwm muaj, thiab cov khoom yuav tsis ntws tawm. Lub tshuab extruder nrog ib lub qhov cua xav tau 2-theem ntsia hlau, thiab ob lub qhov cua xav tau 3-theem ntsia hlau. Txhua theem muaj ib ntu siab nruab nrab, ib ntu nias, thiab ib ntu ntsuas. Theem pib ntawm thawj theem yog ntu pub siab txheem, thiab theem thib ob yog ntu tso pa tawm siab ib txwm muaj, uas yog qhov chaw tso pa tawm nyob.
Rau qhov tsim ntsia hlau ntawm lub extruder vented, muaj ob qhov teeb meem: thaum cov khoom siv mus txog qhov seem vent, cov khoom siv yuav tsum yaj tag nrho kom tso tawm cov volatiles; qhov thib ob, qhov pub ntawm cov ntsia hlau theem ob yuav tsum tseem ceeb dua li ntawm cov ntsia hlau theem thawj zaug kom ua rau lub qhov ntsia hlau ntawm qhov pib ntawm theem thib ob tsis tiav, yog li ntawd qhov cua tawm tuaj yeem tswj tau qhov siab ib txwm muaj.
Thaum tus nqi pub ntawm thawj theem ntsia hlau tseem ceeb dua li ntawm theem ob theem ntsia hlau, cov yaj hauv lub extruder yuav ntws rov qab. Txhawm rau daws qhov teeb meem no, nws yog qhov tsim nyog los txo qhov pub ntawm thawj theem lossis nce qib thib ob qhov pub.

2. Cov xwm txheej ntawm cov txheej txheem
Txoj kev daws teeb meem sai thiab yooj yim yog hloov cov txheej txheem. Piv txwv li, kuv tab tom ua kom muaj kev sib txhuam thiab kev ntxhov siab ntawm lub tog raj kheej hlau lossis ntsia hlau thiab ua kom muaj kev sib txhuam lossis viscosity raws qhov chaw ntawm lub tog raj kheej hlau kom txhim kho qhov ntim khoom xa tuaj.

3. Qhov chaw tso pa tawm
Yog tias lub hau ntswj ntawm qhov chaw tso pa tawm tsuas yog ib feem puv thiab qhov chaw tso pa tawm tseem pub cov khoom noj, muaj teeb meem tshwj xeeb nrog kev tsim qhov chaw tso pa tawm. Qhov chaw tso pa tawm yuav tsum dav dua li cov dej ntws kom ntseeg tau tias cov yaj tsis thaiv qhov chaw tso pa tawm. Tib lub sijhawm, qhov qhib ntawm qhov chaw tso pa tawm yuav tsum tsis txhob loj dhau, uas tuaj yeem txo lub sijhawm nyob ntawm cov yaj thiab lub sijhawm nthuav dav ntawm cov khoom ntws.
Ua ib lub chaw tsim khoom siv yeeb nkab extruder, Jinwei qhov kev paub yog: Seb lub hau ntswj vented tawm ntawm cov khoom siv yog ncaj qha cuam tshuam nrog cov txheej txheem extrusion, kev ua tau zoo yas, thiab kev tsim ntawm lub hau ntswj thiab qhov cua. Yog li ntawd, lub chaw tsim khoom siv lub tshuab extruder vented. Thaum tawm hauv lub tshuab rau kev tsim khoom thiab kev ua tiav, nws yog qhov tsim nyog kom nkag siab txog cov txheej txheem ua tiav, cov yam ntxwv resin, thiab kev ua haujlwm ntawm cov khoom siv kom ua rau lub tshuab extruder vented feem ntau ua haujlwm thiab ruaj khov.