Kev ua haujlwm ntawm ntau txoj kev tsim yog feem ntau yog khoov thiab ncab daim ntawv preheated raws li qhov yuav tsum tau ua ntej los ntawm kev siv zog. Qhov yuav tsum tau ua kom yooj yim tshaj plaws rau kev pwm yog ua kom cov phab ntsa tuab ntawm cov khoom sib xws li sai tau. Cov laj thawj tseem ceeb rau cov phab ntsa tuab ntawm cov khoom yog: thawj, qib ntawm kev ncab ntawm txhua qhov ntawm daim ntawv tsim yog txawv; qhov thib ob, qhov loj ntawm qhov ceev ncab, uas yog, cov pa roj ntws ntawm kev rho tawm huab cua thiab kev nce lossis qhov ceev ntawm cov pwm, clamping ncej thiab pre ncab plunger. Kev tsim yog lwm txoj hauv kev tseem ceeb tom qab phaj (daim ntawv) cua sov, suav nrog kev tswj hwm cov txheej txheem tseem ceeb xws li kev tsim kub, kev tsim siab thiab kev tsim ceev.
① Kub Tsim
Tom qab txiav txim siab cov khoom siv, hom txheej txheem thiab cov khoom siv, qhov kub thiab txias yog qhov tseem ceeb tshaj plaws uas cuam tshuam rau qhov zoo ntawm cov khoom, uas cuam tshuam ncaj qha rau qhov tuab tsawg kawg nkaus, kev faib tuab thiab qhov yuam kev ntawm cov khoom, thiab tseem cuam tshuam rau qhov ntev thiab lub zog tensile ntawm cov khoom, thiab txawm tias cuam tshuam rau qhov ceev ntawm kev tsim. Yog li ntawd, nws yuav tsum tau coj los ua qhov tseem ceeb.
② Tsim Kev Nyuaj Siab
Qhov cuam tshuam ntawm lub siab ua rau daim ntawv deform, tab sis cov khoom muaj peev xwm tiv taus deformation, thiab nws cov elastic modulus txo qis nrog rau qhov nce ntawm qhov kub. Ntawm qhov kub molding, tsuas yog thaum qhov kev ntxhov siab los ntawm qhov siab hauv cov khoom ntau dua li qhov elastic modulus ntawm cov khoom ntawm qhov kub no tuaj yeem ua rau cov khoom deformed. Yog tias qhov siab siv ntawm qee qhov kub tsis txaus los tsim kom muaj kev ntev txaus ntawm cov khoom, cov molding tuaj yeem ua tau zoo tsuas yog los ntawm kev nce qhov siab molding lossis nce qhov kub molding. Vim tias cov elastic modulus ntawm ntau yam khoom sib txawv thiab muaj kev vam khom sib txawv ntawm qhov kub, qhov siab molding sib txawv nrog hom polymer (suav nrog qhov hnyav molecular), daim ntawv tuab thiab molding kub.
③ Kev Ua Ceev
Cov laj thawj tseem ceeb rau cov khoom tsis sib npaug ntawm phab ntsa tuab yog: thawj, qib kev ncab ntawm txhua qhov ntawm daim ntawv tsim yog txawv; qhov thib ob, qhov loj ntawm qhov ceev ncab, uas yog, cov pa roj ntws ntawm kev rho tawm thiab kev nce lossis qhov ceev ntawm cov pwm, clamping ncej thiab pre stretching plunger. Qhov ceev tsim yog hais txog qhov ceev kos duab ntawm lub phaj (daim ntawv). Kev nce qhov ceev tsim tuaj yeem ua rau lub voj voog tsim luv dua thiab muaj txiaj ntsig zoo rau kev txhim kho kev tsim khoom. Txawm li cas los xij, qhov ceev tsim ntau dhau yuav cuam tshuam rau qhov zoo ntawm cov khoom.
Peb paub tias cov ntsiab lus txiav txim siab seb puas ua tiav lossis tsis ua tiav, yog li peb kho txhua yam khoom nrog kev ua tau zoo tshaj plaws thiab sim ua kom zoo tshaj plaws li sai tau.
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Lub sijhawm tshaj tawm: Lub Yim Hli-23-2022