Kev kho deformation. Lub ntsiab yog vim li cas rau qhov no yog uneven curing ntawm molding khoom thiab shrinkage ntawm cov khoom tom qab demolding. Mechanism thiab countermeasures: Thaum lub sij hawm resin curing cov tshuaj tiv thaiv, cov qauv tshuaj hloov, ua rau ntim shrinkage. Lub uniformity ntawm curing ua rau cov khoom warp mus rau sab uas thawj kho. Qhov thib ob, thermal expansion coefficient ntawm cov khoom yog ntau dua li ntawm cov pwm steel. Thaum cov khoom txias cia, nws cov unidirectional shrinkage tus nqi yog ntau dua li unidirectional thermal shrinkage tus nqi ntawm cov pwm. Txhawm rau daws qhov no, cov txheej txheem hauv qab no tau txais:
① Txo qhov kub ntawm qhov sib txawv ntawm cov pwm sab sauv thiab cov pwm qis kom ua kom qhov kub thiab txias sib txawv raws li qhov ua tau;
② Siv cov khoom cua txias kom txo qis deformation;
③ Ua kom cov molding siab, ua kom cov qauv compactness ntawm cov khoom, thiab txo qhov shrinkage tus nqi ntawm cov khoom;
④ Txuas lub sijhawm rwb thaiv tsev kom tsim nyog txhawm rau tshem tawm kev ntxhov siab sab hauv.
⑤ Kho qhov curing shrinkage ntawm SMC cov ntaub ntawv.
Blistering. Ib tug semicircular bulge nyob rau saum npoo ntawm cov khoom kho.
Mechanism thiab countermeasures:
Tej zaum nws yuav yog vim tsis tiav solidification ntawm cov khoom, siab kub hauv zos, los yog siab volatile cov ntsiab lus nyob rau hauv cov khoom, ntxiab huab cua ntawm nplooj ntawv, ua rau ib tug semicircular bulge nyob rau saum npoo ntawm cov khoom.
① Ua kom cov molding siab zoo
② Nthuav lub sijhawm rwb thaiv tsev
③ Txo cov pwm kub.
④ Txo qhov chaw tso tawm
Mechanism thiab Countermeasures ntawm Uneven xim ntawm cov khoom nto
① Cov pwm kub tsis sib npaug thiab hauv zos siab dhau lawm, yog li pwm kub yuav tsum tswj kom tsim nyog;
② Cov dej ntws tsis zoo ntawm cov ntaub ntawv molded ua rau tsis sib npaug ntawm cov fiber ntau, uas feem ntau tuaj yeem ua rau lub siab tsim thiab ua kom cov kua dej ntau dua;
③ Cov xim thiab cov resin tsis tuaj yeem sib tov zoo thaum lub sij hawm npaj cov xim pleev xim.
