Siab rov qab kho ntawm kev txhaj tshuaj molding tshuab screws

Cov txiaj ntsig ntawm kev kho lub nraub qaum kom tsim nyog:
1. Nws tuaj yeem cog cov khoom molten hauv cov khoom ntim, ua kom ceev, thiab txhim kho qhov ruaj khov ntawm cov nplaum nplaum, cov khoom hnyav, thiab qhov loj me.
2. Nws tuaj yeem "extrude" cov roj hauv cov khoom siv molten, txo cov npuas npuas thiab cov npuas sab hauv ntawm cov khoom, thiab txhim kho qhov sib xws ntawm luster.
3. Ceev nrooj rov qab ceev ntawm cov ntsia hlau kom ua tiav cov khoom molten hauv lub thoob, ua kom cov khoom sib xyaw ua ke ntawm cov xim hmoov, masterbatch, thiab cov khoom molten, thiab tsis txhob muaj xim sib xyaw hauv cov khoom.
4. Kev ua kom lub nraub qaum kom zoo tuaj yeem txhim kho qhov chaw shrinkage ntawm cov khoom thiab cov nplaum ntws ncig ntawm cov khoom.
5. Nws tuaj yeem ua kom cov av noo ntawm cov khoom siv molten, txhim kho cov khoom zoo ntawm cov khoom molten, txhim kho cov dej ntawm cov khoom molten thaum lub sij hawm pwm filling, thiab xyuas kom meej tias tsis muaj cov kua nplaum txias rau ntawm qhov khoom.
Thaum lub nraub qaum qis dhau lawm, cov teeb meem hauv qab no yuav tshwm sim:
1. Thaum lub nraub qaum qis dhau lawm, cov ntsia hlau tawm sai dhau lawm, ua rau cov khoom siv qis dua (cov khoom xoob)
2. Nws tuaj yeem ua rau cov yas tsis zoo, cov tshuaj txhaj tsis ruaj khov, thiab cov kev hloov pauv tseem ceeb hauv cov khoom hnyav thiab qhov loj me.
3. Qhov saum npoo ntawm cov khoom tuaj yeem pom qhov tshwm sim tsis zoo xws li shrinkage, huab cua npuas, cov khoom txias, thiab cov lus tsis sib xws.
4. Cov npuas yog nquag tshwm rau hauv cov khoom, thiab cov cheeb tsam ib puag ncig thiab cov pob txha ntawm cov khoom yog cov nplaum tsis txaus.
Kev ntxhov siab ntau dhau tuaj yeem ua rau muaj teeb meem hauv qab no:
1. Yog hais tias lub melt siab nyob rau hauv pem hauv ntej kawg ntawm cov khoom chim siab heev, cov khoom kub yog siab, thiab lub viscosity txo, qhov thim rov qab ntws ntawm cov yaj nyob rau hauv cov ntsia hlau zawj thiab cov leakage txaus tus nqi ntawm cov khoom chim thiab cov khoom. ntsia hlau nce, uas yuav txo tau cov plasticization efficiency (cov khoom siv plasticized ib lub sij hawm).
2. Rau cov yas los yog cov xim uas tsis zoo thermal stability (xws li PVC, POM, thiab lwm yam), qhov kub ntawm cov yaj thiab qhov nce hauv lub sij hawm cua sov hauv lub thoob tuaj yeem ua rau thermal decomposition, los yog cov degree ntawm discoloration ntawm cov xim. tuaj yeem nce ntxiv, ua rau txo qis ntawm cov xim saum npoo thiab luster ntawm cov khoom.
3. Yog tias lub nraub qaum siab dhau lawm, cov ntsia hlau yuav thim rov qab maj mam, thiab lub sijhawm ua ntej molding thiab rov qab yuav ntev, uas yuav ua rau lub sij hawm voj voog thiab ua rau txo qis hauv kev tsim khoom.
4. Siab rov qab siab thiab siab yaj siab ua rau nws yooj yim rau lub nozzle kom salivate tom qab txhaj tshuaj nplaum. Thaum lub sij hawm txhaj tshuaj nplaum tom ntej, cov khoom txias hauv lub nozzle channel yuav thaiv lub nozzle los yog ua rau cov khoom txias me ntsis hauv cov khoom.
5. Thaum lub sij hawm txhaj tshuaj molding txheej txheem, ntau lub zog rov qab feem ntau ua rau cov nplaum nplaum ntawm lub nozzle, nkim raw cov ntaub ntawv, thiab ua rau lub nplhaib cua sov nyob ze ntawm lub nozzle kom hlawv tawm.
6. Cov neeg kho tshuab hnav ntawm lub tshuab ua ntej molding thiab ntsia hlau chim nce.
Kev kho ntawm lub siab rov qab:
Kev hloov kho ntawm kev txhaj tshuaj molding rov qab siab yuav tsum tau txiav txim siab raws li kev ua tau zoo ntawm cov khoom siv raw, ziab khaub ncaws, cov qauv khoom, thiab cov xwm txheej zoo. Lub siab rov qab yog feem ntau hloov ntawm 3-15kg/cm3. Thaum muaj cov npuas me me, xim sib xyaw, shrinkage, thiab cov kev hloov pauv tseem ceeb hauv cov khoom loj thiab qhov hnyav ntawm cov khoom, lub nraub qaum tuaj yeem tsim nyog. Thaum muaj cov nplaum nplaum, salivation, cov khoom molten overheating thiab decomposition, cov khoom discoloration, thiab cov khoom qeeb rov qab los ntawm lub nozzle, nws tuaj yeem txiav txim siab kom txo qis lub nraub qaum kom tsim nyog. Rov qab siab yog ib qho tseem ceeb ntawm kev tswj xyuas qhov zoo ntawm cov khoom molten thiab cov khoom hauv kev txhaj tshuaj molding. Lub siab zoo rov qab ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov khoom zoo thiab tsis tuaj yeem tsis quav ntsej!