Cov txheej txheem molding ntawm cov khoom yas tsis tsuas yog tso cai rau peb kom tau txais cov khoom yas uas xav tau, tab sis kuj txhim kho kev ua tau zoo ntawm cov yas. Rau cov thermoplastics thiab thermosetting yas, lawv txoj kev molding yog txawv. Muaj plaub txoj kev molding yas, txhaj tshuaj molding, tshuab moulding, blister molding, thiab extrusion molding.
1. Txhaj tshuaj molding.
Kev txhaj tshuaj molding tuaj yeem muab faib ua kev txhaj tshuaj molding thiab tuag casting txoj kev. Txhaj tshuaj molding tshuab, hu ua lub tshuab txhaj tshuaj lossis lub tshuab txhaj tshuaj molding, yog cov khoom siv tseem ceeb rau kev ua cov khoom siv thermoplastic lossis cov khoom siv thermosetting rau hauv cov khoom yas ntawm ntau yam duab nrog cov yas molding pwm. Kev txhaj tshuaj molding yog pom tau los ntawm kev txhaj tshuaj molding tshuab thiab pwm.
Kev txhaj tshuaj molding feem ntau yog siv rau cov thermoplastics. Nws zoo ib yam li extrusion molding, qhov txawv yog tias cov yas molten nkag mus rau hauv cov pwm kaw los ntawm lub nozzle, thiab solidifies thiab tsim cov khoom hauv pwm. Ntau ntau ntawm cov thawv ntim me me, cov khoom siv niaj hnub, cov khoom tshwj xeeb zoo li tus thiab lwm yam. Qhov zoo ntawm kev txhaj tshuaj molding yuav tsum muaj cov xim, qhov loj, qauv, zoo li, thiab cim cim yuav tsum zoo ib yam, huv si, thiab ntim thiab tiv thaiv. Kev txhaj tshuaj molding khoom yog qhov dav tshaj plaws, tsuav yog muaj pwm, cov khoom tuaj yeem ua tau, thiab nws yooj yim heev.
2. Tshuab molding.
Tshuab moulding feem ntau yog siv rau cov thermoplastics. Lub tubular yas parison tau los ntawm extruding cov yas yog muab tso rau hauv qhov sib cais pwm thaum nws kub, thiab huab cua yog compressed nyob rau hauv lub parison tam sim ntawd tom qab lub pwm raug kaw kom inflate lub yas parison thiab cling rau lub puab phab ntsa ntawm pwm, thiab nws yog demoulded tom qab txias, kom tau txais ntau yam khoom hollow. Ua ntej, cov yas molten yog muab tso rau hauv pwm, thiab nyob rau hauv lub siab ntawm compressed cua, cov yas yog tshuab mus rau sab hauv ntawm lub pwm. Cov khoom tiav tom qab txias thiab demoulding. Tshuab moulding feem ntau yog siv los tsim ntau yam hollow ntim ntim, thiab tseem tuaj yeem tsim cov yeeb yaj kiab, nplooj ntawv, thiab lwm yam. Qhov zoo ntawm tshuab moulding yuav tsum muaj qhov sib npaug, qhov hnyav hnyav, xim zoo ib yam, du nto thiab ua tiav kev sib haum xeeb.
3.Blister tsim.
Blister yog ib hom kev siv tshuab yas. Lub hauv paus ntsiab lus tseem ceeb yog ua kom sov thiab muag cov ntaub ntawv yas nyuaj, tom qab ntawd nqus nws ntawm cov pwm los ntawm lub tshuab nqus tsev, thiab ua kom nws zoo tom qab txias. Nws yog dav siv hauv kev tsim cov lauj kaub, phaj, tais, thiab yas. Ntim, teeb pom kev zoo, tshaj tawm, kho kom zoo nkauj thiab lwm yam lag luam. Cov khoom sim yuav tsum tsim nyog, txoj hauj lwm buckle tuaj yeem ceev cov khoom, lub thickness yuav tsum sib npaug, thiab qhov saum npoo yuav tsum du thiab pob tshab.
4.Extrusion molding.
Extrusion, tseem hu ua extrusion, yog txheej txheem yas molding thiab yog ib txoj hauv kev tseem ceeb rau thermoplastic molding. Extrusion molding feem ntau yog siv rau cov thermoplastics. Qhov no yog txhawm rau extrude cov yas yaj thiab cov yas yas los ntawm lub qhov ncauj qhov sib txawv ntawm cov pwm ntawm lub taub hau ntawm extruder los ua ib qho profile zoo ib yam li cov duab ntawm cov tuag. Nws tsim ntau daim ntawv, cov kav dej, cov pas nrig, cov xov hlau, cov ntaub ntawv tshwj xeeb zoo li tus, thiab lwm yam.
