EPP puab molding tshuab txheej txheem

Cov txheej txheem ntawm EPP molded cov khoom feem ntau suav nrog cov ntaub ntawv thauj khoom (siab tuav), ua npuas ncauj molding, ua npuas ncauj kom qhuav thiab shaping, tshuaj xyuas, ntim, thiab lwm yam, thiab tuaj yeem ua tiav rau hauv ntau yam duab.

Nws yog tshwj xeeb yog taw qhia tias ua ntej ua EPP, nws yog ib qho tsim nyog yuav tsum tau ua kom lub siab nyob rau hauv cov ntaub ntawv raw khoom los ntawm lub siab loading los tsim molded qhov chaw nrog tsawg ntom. Qhov no yog vim hais tias cov ntaub ntawv raw tom qab lub siab loading tuaj yeem ua tiav cov khoom molded nrog ntau qhov ntom ntom. Tsis tas li ntawd, lub load siab kuj tuaj yeem txo qhov shrinkage ntawm molded qhov chaw tom qab demoulding, thiab cov nyhuv saum npoo yuav zoo dua.

Feem ntau, lub siab nqa yog ua tiav los ntawm cov roj nkag mus rau sab nrauv phab ntsa ntawm cov khoom. Thaum lub sijhawm ua haujlwm no, lub siab nqa tuaj yeem hloov kho los ntawm kev hloov pauv xws li lub sijhawm, siab, thiab kub. Tom qab lub siab loading txheej txheem, qhov ceev ntawm molded khoom yog txo.

Cov kauj ruam ntxaws yog raws li nram no:

1. Kaw cov pwm thiab preheat pwm kom qhov kub ntawm cov pwm mus txog qhov melting point ntawm PP;

2. Pub, kom cov ntaub ntawv raw nkag mus rau hauv pwm los ntawm cov khoom siv phom.

3. Ncuav lub khob rau hauv pwm hauv peb kauj ruam:

(1) Chav dej ntws: Chav dej ntws los ntawm sab saum toj mus rau hauv qab kom thawb cua tawm ntawm chav chav thiab cov dej condensed kom ntws tawm. Thaum lub sij hawm txoj kev no, qhib lub Upper steam inlet valve thiab qis condensate ntws valve.

(2) Kab rov tav chav: Ua kom cov chav cheb los ntawm ib sab ntawm chav chamber mus rau cov khoom siv raw, nkag mus rau cov khoom siv raw thiab mus txog rau sab nraud. Lub sijhawm no, kaw lub condensate valve ntawm ib sab thiab qhib lub qhov dej nkag valve. Nyob rau tib lub sij hawm, lub qhov cub inlet valve nyob rau sab nraud raug kaw thiab lub condensate dej valve qhib, yog li cov pa tawm tawm ntawm qhov kev taw qhia. Yog tias muaj cov flange nyias hauv cov pwm, nws yog qhov zoo tshaj plaws rau cov chav kom dhau ntawm lub flange kom cov ntaub ntawv nyoos sandwiched hauv flange kuj tuaj yeem vaporized.

(3) Kev tswj xyuas siab: Tom qab dhau chav kab rov tav, nws yuav tsum tau mus los ntawm kev tswj xyuas lub siab lossis ob sab evaporation txheej txheem. Thaum lub sijhawm ua haujlwm no, lub tshuab nqus dej nkag tau qhib thiab lub condensate tawm valve raug kaw, kom lub siab maj mam nce mus txog qhov kawg ntawm tus nqi.

4. Cua txias

Tom qab ua kom sov, qhov kub hauv pwm feem ntau yuav ncav cuag 140 degree. Txhawm rau kom ntseeg tau tias qhov kev ua haujlwm du ntawm cov khoom, pwm kub yuav tsum raug txo kom 70 degree.

5. Demold

Raws li lub siab sab hauv yog relieved thiab kub poob mus rau qhov tso cai demoulding kub, lub demoulding lag luam tuaj yeem nqa tawm.