Hauv kev nias molding, ob lub pwm sib phim raug ntsia rau hauv lub tshuab nias (feem ntau yog hydraulic), thiab lawv txoj kev txav mus los tsuas yog txwv rau ib txoj kab uas tig mus rau lub dav hlau ntawm pwm. Cov khoom sib xyaw ntawm cov resin, filler, reinforcing material, curing agent, thiab lwm yam raug nias thiab kho hauv lub xeev uas nws puv tag nrho cov qhov ntawm lub pwm molding. Cov txheej txheem no feem ntau cuam tshuam nrog ntau yam khoom siv, suav nrog:
Epoxy resin prepreg fiber txuas ntxiv mus
Cov tshuaj molding compound (SMC)
Cov khoom siv ua qauv dumpling (DMC)
Cov Tshuaj Molding Loj (BMC)
Cov iav lev thermoplastic (GMT)
Cov kauj ruam molding compression
1. Kev npaj cov ntaub ntawv molding
Feem ntau, cov khoom siv molding hmoov lossis granular raug muab tso rau hauv qhov, tab sis yog tias qhov ntim ntau lawm, kev kho ua ntej feem ntau yog qhov zoo.
2. Ua ntej cov ntaub ntawv molding
Los ntawm kev ua kom cov khoom pwm sov ua ntej, cov khoom pwm tuaj yeem kho tau zoo ib yam, thiab lub voj voog pwm tuaj yeem luv dua. Tsis tas li ntawd, vim tias lub siab pwm tuaj yeem txo tau, nws kuj muaj cov txiaj ntsig ntawm kev tiv thaiv kev puas tsuaj rau cov ntxig thiab pwm. Cov tshuab ziab cua sov kuj tseem siv rau kev ua ntej, tab sis cov tshuab ua ntej siab siv dav.
3. Kev ua haujlwm pwm
Tom qab muab cov khoom siv pwm tso rau hauv pwm, cov khoom siv yuav tsum tau ua kom mos thiab ntws tag nrho hauv qab qhov siab qis. Tom qab siv tag, pwm yuav raug kaw thiab nias dua kom kho tau raws sijhawm teem tseg.
Cov polyester thiab epoxy resins uas tsis muaj roj uas tsis tsim cov pa roj tsis tas yuav tsum tau tso pa tawm.
Thaum xav tau degassing, lub sijhawm teem sijhawm yuav tsum tau tswj. Yog tias lub sijhawm ua ntej, cov pa roj uas tso tawm yuav me me, thiab cov pa roj ntau yuav raug kaw rau hauv cov khoom, uas yuav ua rau muaj npuas ntawm qhov chaw molding. Yog tias lub sijhawm lig, cov pa roj tau raug kaw rau hauv cov khoom kho ib nrab, nws nyuaj rau khiav tawm, thiab yuav ua rau muaj kab nrib pleb hauv cov khoom pwm.
Rau cov khoom uas muaj phab ntsa tuab, lub sijhawm kho yuav ntev heev, tab sis yog tias kev kho tsis tiav, cov npuas dej yuav tsim tawm ntawm qhov chaw molding, thiab cov khoom tsis zoo yuav tsim tawm vim yog deformation lossis post-shorization.
Lub sijhawm tshaj tawm: Plaub Hlis-15-2021