Lub hom phiaj ntawm cov ntsia hlau chim

I. Daim ntawv thov hauv kev ua cov yas
(I) Plasticization
Hauv kev txhaj tshuaj molding tshuab thiab extruders, lub hau ntsia hlau ua lub luag haujlwm tseem ceeb. Thaum cov ntsia hlau tig mus thawb cov khoom siv extruded rau pem hauv ntej, lub tshav kub hloov mus rau cov khoom los ntawm cov cua sov sab nraud ntawm lub thoob, thiab qhov ntim ntawm cov ntsia hlau xov zawj maj mam txo qis, kom cov khoom sib npaug sib xyaw thiab plasticized rau hauv lub xeev molten. tom qab tau nyem, flipped thiab sheared thaum raug thawb rau pem hauv ntej, ua kom tiav cov plasticization ntawm cov yas. Piv txwv li, thaum tsim cov khoom yas xws li lub raj mis yas, cov ntawv yas, cov kav dej yas, thiab lwm yam, lub hau yas yas yas yas raw khoom xws li PP (polypropylene), PVC (polyvinyl chloride), PE (polyethylene), thiab lwm yam. hais tias nws hloov los ntawm lub xeev khoom mus rau lub xeev molten haum rau molding. Cov ntaub ntawv yas sib txawv muaj cov khoom sib txawv ntawm lub cev thiab tshuaj lom neeg. Piv txwv li, PVC yog rhiab heev rau qhov kub thiab txias thiab yooj yim rau decompose, muaj viscosity siab thiab muaj zog corrosiveness, yog li nws yuav tsum tau tshwj xeeb tsim ntsia hlau chim rau yas los xyuas kom meej cov khoom zoo thiab ntau lawm efficiency.

(II) Kev thauj khoom
Lub taub hau ntsia hlau tseem yog lub luag haujlwm rau kev thauj cov khoom yas yas mus rau pwm lossis cov txheej txheem tom ntej. Nyob rau hauv cov txheej txheem no, tsis xws li kev sib hloov ceev thiab lub suab ntawm cov ntsia hlau yuav cuam tshuam rau conveying ceev thiab siab ntawm cov khoom. Piv txwv li, nyob rau hauv cov txheej txheem txhaj tshuaj molding, lub hau ntsia hlau txhaj cov yas yas thiab cov yas zoo tib yam yaj mus rau hauv cov pwm kab noj hniav nrog lub siab txaus thiab ceev kom ntseeg tau tias molding zoo ntawm cov khoom yas, xws li qhov tseeb qhov tseeb thiab qhov ntom ntom ntawm cov khoom yas. .

2. Daim ntawv thov hauv kev ua cov roj hmab
Nyob rau hauv cov roj hmab extruder, lub hau ntsia hlau kuj tseem ua haujlwm ntawm cov khoom siv roj hmab. Cov roj hmab ntsia hlau tig thiab extrude cov khoom nyob rau hauv lub chim ntawm cov roj hmab extruder. Kev sib txhuam mus sij hawm ntev ntawm cov ntsia hlau, lub thoob thiab cov khoom siv yuav ua rau kev hnav ntawm lub thoob thiab cov ntsia hlau. Txawm hais tias hnav tsis tau, kev ua haujlwm ib txwm ntawm cov ntsia hlau chim yog qhov tseem ceeb heev rau kev sib xyaw thiab extrusion molding ntawm roj hmab. Piv txwv li, thaum tsim cov khoom siv roj hmab xws li roj hmab sealing strips thiab roj hmab log, cov ntsia hlau chim sib tov, plasticizes thiab extrude cov roj hmab raw cov ntaub ntawv rau hauv lub siab xav. Ntxiv mus, vim yog cov yam ntxwv ntawm cov khoom siv roj hmab, xws li siab elasticity thiab viscosity, kev tsim thiab kev ua haujlwm ntawm cov ntsia hlau chim kuj txawv, xws li xav tau lub zog loj dua los tsav cov ntsia hlau tig.

3. Siv ua lwm yam ntaub ntawv
Ntxiv nrog rau cov yas thiab roj hmab, cov ntsia hlau chim kuj tseem siv rau hauv kev ua ntawm qee yam khoom siv. Piv txwv li, thaum ua cov khoom sib xyaw ua ke uas muaj cov hmoov ceramic, aluminium magnesium hmoov, hlau hmoov thiab lwm yam khoom siv hmoov thiab yas, lub hau ntsia hlau tuaj yeem sib xyaw cov ntaub ntawv sib xyaw ua ke kom cov hmoov cov ntaub ntawv sib npaug hauv cov yas matrix los tsim cov khoom sib xyaw. cov khoom uas muaj cov khoom tshwj xeeb. Tsis tas li ntawd, hauv qee qhov kev ua zaub mov, tshuaj thiab lwm yam lag luam, yog tias nws cuam tshuam txog kev thauj mus los thiab kev ua cov khoom zoo li pasty thiab pasty, cov cuab yeej zoo ib yam li cov ntsiab lus ntawm lub taub hau taub hau yuav raug siv, tab sis nws yuav tsim tshwj xeeb thiab tsim raws li cov khoom siv. cov kev cai tshwj xeeb ntawm cov ntaub ntawv (xws li cov qauv kev nyiam huv, qhov kub thiab txias, thiab lwm yam).