TusSMC Cov Khoom Siv SMSyog qhov ua tau zoo tshaj plaws hauv cov fiber fiber txhawb cov yas / cov khoom siv composite khoom siv. Cov txheej txheem smc moulding muaj ntau yam zoo, xws li: cov khoom lag luam du thiab cov khoom lag luam zoo, tseem yuav tau tshwm sim hauv SMC Moulding txheej txheem, uas yog feem ntau yog ua raws li cov laj thawj hauv qab no:
(I)Tsis muaj khoom siv: Tsis muaj cov ntaub ntawv txhais tau tias SMC me me qhov chaw tsis tau sau tag nrho, thiab cov chaw tsim khoom yog feem ntau cov khoom lag luam ntawm SMC cov khoom lag luam, tshwj xeeb yog cov hauv paus hniav thiab saum ntawm cov fab.
(a) tsawg dua cov khoom siv
(b) SMC cov khoom muaj fluidity tsis zoo
(C) Cov khoom siv tsis txaus siab
(d) kho kom nrawm heev
Txheej txheem me me thiab countermeasures:
①①ter SMC cov khoom muaj yas los ntawm tshav kub, lub suab viscos loj yog qhov loj. Ua ntej kev sib txuas hla thiab cov kev sib tw sib txawv yog ua tiav, tsis muaj sijhawm txaus, siab, thiab ntim kom sau cov khoom siv cov kab noj qab haus huv nrog cov yaj.
②) Lub sijhawm khaws cia ntawm SMC Moulding cov khoom siv ntev heev, thiab styrene volatilizes ntau dhau, ua rau muaj kev txo qis hauv cov khoom siv smc molding.
Sedin redin muab tshuaj txhuam tsis yog soaked rau hauv cov fiber. Lub Resin muab tshuaj txhuam tsis tuaj yeem tsav cov fiber ntau ntws thaum lub sij hawm molding, ua rau cov khoom tsis txaus. Rau qhov tsis txaus ntawm cov khoom siv tshwm sim los ntawm cov laj thawj saum toj no, cov kev daws teeb meem tshwj xeeb tshaj yog tshem tawm cov khoom siv no thaum txiav cov ntaub ntawv.
Cov nyiaj pub mis pub rau cov khoom noj tsis txaus. Kev daws teeb meem yog kom nce cov khoom pub mis kom tsim nyog.
⑤THEY yog huab cua ntau dhau thiab ntau yam uas tsis tshua muaj teeb meem nyob rau hauv cov khoom moulding. Kev daws teeb meem yog kom tsim nyog rau cov naj npawb ntawm txoj hlab; kev tsim nyog nce thaj chaw pub mis thiab tawg rau qee lub sijhawm los ntxuav cov pwm; Kev tsim nyog ua kom muaj kev txhawb nqa molding siab.
Ruam dhau lawm lig dhau lawm, thiab cov khoom siv pwm tau ua tiav kev sib txuas ua tiav thiab kho tau ua ntej sau cov pwm kab noj hniav. ⑦if Cov pwm kub yog siab dhau lawm, kev sib txuas ntoo khaub lig thiab kev kho cov tshuaj yuav ua tiav, yog li qhov kub yuav tsum tau qis dua.
(2)Staom.Muaj tsis tu ncua lossis tsis xwm yeem me me rau saum npoo ntawm cov khoom, feem ntau yog tsim nyob rau sab saum toj thiab nruab nrab nyias ntawm cov khoom.
Txheej txheem me me thiab countermeasures:
①THE SMC Mould cov khoom muaj cov pa thiab cov ntsiab lus volatile yog qhov loj, thiab txoj kev tawm yog tsis du; Cov nyhuv tuab ntawm SMC cov khoom tsis yog qhov zoo, thiab cov roj tsis tuaj yeem tsim tau zoo. Cov laj thawj saum toj no tuaj yeem tswj tau los ntawm kev sib xyaw ua ke ntawm kev nce tus naj npawb ntawm vents thiab tu cov pwm.
②Tus Pub Thaj chaw pub mis yog loj heev, tsim nyog txo cov chaw pub mis tuaj yeem tswj tau. Hauv cov txheej txheem ua haujlwm tiag tiag, tib neeg cov yam ntxwv kuj tseem tuaj yeem ua rau mob trachoma. Piv txwv li, yog tias qhov kev ntsuas tau ntxov dhau lawm, nws yuav nyuaj rau cov roj qhwv hauv cov khoom molding kom raug muab tso tawm xws li pores ntawm cov khoom.
(3)Warpage thiab deformationCov. Qhov laj thawj tseem ceeb yog qhov tsis sib xws ntawm cov moulding compound thiab shrinkage ntawm cov khoom tom qab kev ua kom pom.
Txheej txheem me me thiab countermeasures:
Thaum lub sij hawm kho cov tshuaj tiv thaiv ntawm lub cob, cov qauv siv tshuaj hloov cov qauv, ua rau ntim shrinkage. Qhov kev sib txuam ntawm txoj kev kho kom zoo ua rau cov khoom lag luam zoo nkauj rau thawj sab cured. Thib ob, cov thermal nthuav coefficient ntawm cov khoom lag luam loj dua li ntawm cov hlau pwm. Thaum cov khoom txias, nws txoj kev shrinkage tus nqi yog ntau dua li ib-txoj kev kub ua kom sov shrinkage tus lej ntawm cov pwm. Txog qhov kawg no, cov hau kev hauv qab no tau txais los daws cov teeb meem:
①reduce qhov ntsuas kub sib txawv ntawm cov pwm sab saud thiab qis dua, thiab ua kom sov li faib ua tau;
②use cua txias constures rau kev txwv deformation;
Kev ua kom muaj kev sib xyaw ua ke ntawm cov khoom lag luam, ua kom muaj kev sib txuas lus ntawm cov khoom lag luam, thiab txo qis tus nqi ntawm cov khoom lag luam;
④ Excong Lub sijhawm ua kom sov kom muaj kev tiv thaiv kev kub ntxhov sab hauv.
⑤Andjust tus nqi kho shrinkage ntawm SMC cov khoom.
(4)Blisting.Lub semichlaw su rau ntawm qhov chaw ntawm cov khoom kho tau zoo.
Txheej txheem me me thiab countermeasures:
Nws yuav yog tias cov khoom siv tsis meej, lub zos kub dhau, thiab cov cua ntxiab ntawm cov ntawv, uas ua rau cov khoom lag luam semicircle ntawm cov khoom.
(①when nce cov moulding siab
(②estend Lub sijhawm ua kom kub ceev
(③) qis dua cov pwm kub.
④reduce lub cheeb tsam tsis txaus ntseeg
(5)Cov xim saum npoo ntawm cov khoom yog tsis ncaj
Txheej txheem me me thiab countermeasures:
Mould qhov kub tsis yog khaub ncaws hnav, thiab feem ntau dhau lawm. Cov pwm kub yuav tsum tau tswj kom zoo;
New Fluidity ntawm cov khoom moulding fiber ntau, feem ntau tuaj yeem nce cov tshuaj moulding ntawm cov yaj ntawm cov yaj;
③pigment thiab resin tsis tuaj yeem sib xyaw zoo nyob rau hauv cov txheej txheem ntawm cov xim ua ke sib xyaw.
Lub Sijhawm Post: Lub Tsib Hlis-04-2021
