Sab nraub qaum yog qhov tseem ceeb heev rautxhaj tshuaj molding, uas ncaj qha cuam tshuam rau kev sau ntawm yaj thiab qhov zoo ntawm cov yas.
(1) Lub nraub qaum kom zoo tuaj yeem txhim kho cov khoom kom zoo
Nws tuaj yeem ua rau cov khoom siv molten hauv cov thoob, nce qhov ceev, thiab txhim kho kev ruaj khov ntawm cov nqi txhaj, cov khoom hnyav thiab loj;
Nws tuaj yeem" extrude" cov pa roj hauv cov khoom siv roj, txo cov pa roj thiab cov npuas sab hauv ntawm cov khoom, thiab txhim kho lub teeb ci zoo nkauj;
Txo cov hau nrawm nrawm nrawm nrawm nrawm nrawm nrawm, ua rau cov khoom siv roj hauv lub thoob hauv cov dej siab, ua kom nce siab rau kev sib xyaw ntawm toner, xim masterbatch thiab molten khoom, thiab zam cov xim sib xyaw ntawm cov khoom;
Tshaj tawm qhov siab rov qab tuaj yeem txhim kho lub shrinkage ntawm cov khoom nto thiab cov kua nplaum txav puag ncig ntawm cov khoom;
Nws tuaj yeem ua kom cov av noo ntawm lub yaj, txhim kho cov khoom yas ntawm lub yaj, txhim kho cov npliag ntawm lub yaj thaum lub pwm pwm puv, thiab ua rau cov khoom ua kom tsis muaj dej txias ntawm cov kua nplaum.
(2) Cuam tshuam ntawm lub nraub qaum siab rau cov khoom lag luam
Efficiency Lub zom zaws zis yuav raug txo yog tias lub siab yaj ntawm lub hauv ntej kawg ntawm lub thoob yog qhov siab dhau, qhov kub yaj yog qhov siab dhau lawm thiab cov viscosity tsawg dua, qhov thim rov qab ntawm yaj nyob rau hauv cov ntsia hlau zawj thiab cov dej ntws tawm ntawm cov thoob thiab cov ntsia hlau nce;
Rau cov plastics (xws li PVC, POM, thiab lwm yam) lossis cov xim muaj qhov tsis zoo thermal stability, cov cua sov tsis zoo yog tshwm sim vim qhov nce ntawm qhov kub ntawm cov yaj thiab lub sijhawm ua cua sov nyob rau hauv cov thoob, lossis qhov tsis txawv txav ntawm colorants nce, thiab cov xim saum npoo thiab cov luster los ua tsis zoo;
③ Yog tias lub nraub qaum siab dhau los, lub hau ntswj yuav rov qab qeeb, thiab lub sijhawm siv tshuaj ua ntej yuav ntev, uas yuav ua rau lub sijhawm hloov mus thiab txo cov khoom lag luam tsim tawm;
Thaum lub siab nraub qaum yog siab thiab lub siab yaj yog siab, nws yog qhov yooj yim rau lub taub hau tsis qab ntsev tom qab txhaj tshuaj. Thaum txoj kev txhaj tshuaj txuas ntxiv, cov khoom siv txias hauv cov nozzle channel yuav thaiv lub nozzle lossis cov khoom txias tau tshwm rau hauv cov khoom;
⑤ Hauv cov txheej txheem kev txhaj tshuaj molding, vim dhau los ntawm qhov rov qab siab dhau los, lub nozzle feem ntau txia tawm, uas ua rau cov khoom siv pov tseg thiab ua rau lub nplhaib cua sov nyob ze ntawm lub nozzle hlawv tawm;
⑥ Cov neeg kho tshuab coj ntawm lub tshuab ua ntej moulding thiab ntsia hlau ntsia hlau loj ntxiv.
(3) Cuam tshuam ntawm lub nraub qaum qis rau cov khoom lag luam
Thaum lub nraub qaum siab qis dhau, lub hau ntswj rov qab nrawm dua, qhov ceev ntawm cov khoom siv molten ntws mus rau hauv pem hauv ntej kawg ntawm lub thoob yog qhov me me (kuj tsis tshua zoo), thiab cov huab cua ntau nkag;
Nws yuav ua rau cov khoom yas tsis zoo, qhov kev txhaj tshuaj tsis ruaj khov, thiab kev hloov pauv loj hauv cov khoom hnyav thiab loj;
Cov nplaim ntawm cov khoom yuav tshwm sim shrinkage, huab cua loj tuaj, khaub thuas txias, tsis sib luag tsis sib luag thiab lwm yam tshwm sim tsis zoo;
Cov npuas yooj yim tshwm rau sab hauv cov khoom, thiab nws yooj yim taug kev ncig cov khoom lag luam thiab pob txha tsis muaj kua nplaum.
(4) Kev qhia kev rov nrawm dua
Sab nraub qaum kev txhaj tshuaj molding yuav tsum tau kho raws li kev ua tiav ntawm cov ntaub ntawv raw, ziab kom qhuav, cov qauv khoom thiab cov haujlwm zoo. Lub nraub qaum feem ntau kho ntawm 3-15kg / cm3. Thaum cov khoom lag luam muaj huab cua me me, kev sib xyaw xim, ntsws thiab cov khoom loj, qhov hnyav hloov, tuaj yeem tsim nyog txhawm rau txhawm rau nce siab rov qab. Yog tias muaj cov dej tsis haum, ua kom tsis txhob qab, ua kom kub thiab ua kom cov hmoov tsis zoo, ua kom cov khoom tawg thiab xa khoom qeeb, rov qab siab tuaj yeem txo qis kom zoo.
