Thaum txhaj tshuaj pwm molding, yog tias qhov zoo ntawm cov yas tsis zoo, qhov zoo li tsis-gloss, qhov phenomenon ntawm caws pliav yuav daws tau?
Yog hais tias qhov zoo ntawm qhov chaw ntawm cov yas tsis zoo thaum kev txhaj molding, qhov zoo li tsis-gloss thiab nqaij doog yog vim:
(1) tsis ci rau saum npoo ntawm cov yas nrig yog qhov laj thawj ntawm lub qhov ci ntsa iab, vim cov pwm khov ntu tsis sib, tsis muaj dab tsi, thiab cov pwm ntog tsis kaw, cov khoom siv tsis zoo thiab pwm kub, thiab lwm yam ., cov yas ntsa yog tsis ci ivory los yog tsaus.Qhov kev hloov yog:
1) Yog hais tias qhov pwm ntawm qhov pwm tsis zoo, qhov pwm ntawm lub pwm tuaj yeem ua tau.
2) Yog tias cov khoom uas tsis muaj zog txaus tsis txaus, cov yaj yuav tsum tau muab tso rau hauv ib qho kev sib txig sib txoos thaum lub tsho ntawm cov kab noj hniav, thiab lub ntsiab lus ntawm lub hnab yas txo lawm. Lub sijhawm no, tuaj yeem txhim kho cov khoom kub, pwm kub, kev txhaj tshuaj thiab lwm txoj hau kev.
3) Yog hais tias cov nplaim ntawm cov yas yog tsaus nti, qhov no yog vim muaj cov khoom tseem ceeb hauv raw khoom, cov khoom siv raw yuav tsum tau qhuav los yog nthuav dav.
4) Yog hais tias tus nplaim ntawm cov khoom yas yog ua los ntawm cov nyiaj, cov khoom siv raw yuav tsum tau qhuav vim feem ntau ntawm ya raws hauv cov yas.
(2) khawb thiab khawb ntawm cov nplaim yas yog kos thiab scraped. Qhov no tsuas yog vim qij txha thiab khawb ntawm cov pwm ntawm lub pwm, uas yog tom qab ntawd rau ntawm daim tawv nqaij lawm. Lub sijhawm no, lub pwm yuav tsum tau polished.Yog cov molds tsis txaus los yog taper, los yog cov yas tilted thaum lub sij hawm ntawm rollout, lawv yuav tsum raug siv los ua kom lub laj lim thiab txhim kho txoj kev thawb.