Yam yuav cuam tshuam kev txhaj tshuaj molding
Cov khoom txuam ntawm cov thermoplastic yas molding shrinkage yog raws li nram no: cov yas ntau yam ntawm cov thermoplastic yas molding txheej txheem vim muaj cov khoom siv thaij ntim rau lub ntim hloov, kev ntxhov siab sab hauv yog muaj zog, khov hauv plawv residual stress yog loj, molecular orientation yam xws li txiv neej muaj zog, sib piv nrog cov thermosetting yas shrinkage loj dua, ntau yam ntawm cov ntsws thiab cov lus qhia meej, thiab tom qab molding shrinkage, shrinkage tus nqi tom qab kev siv los yog ntub zuag feem ntau loj dua cov thermosetting yas.
Cov khoom siv hlau hu rau qhov chaw ntawm cov pwm kab thiab tawm sai sai rau daim ntawv qis tsis khov lawm.Thaum rau cov neeg pluag thermal conductivity ntawm plastics, lub puab txheej ntawm cov yas plawg yog maj mam txias rau ib txheej quav nrog loj contraction.Yog li , ntsa cov tuab, qeeb txias, siab ceev txheej thickness ntawm shrinkage.Ntxiv tas, qhov layout thiab ntau ntawm embedded qhov chaw thiab embedded qhov chaw muaj feem xyuam ncaj qha rau cov kev taw qhia ntawm cov khoom ndlwg, qhov sib npaug ntawm cov khoom ntom nti thiab qhov kev sib tw ua haujlwm, thiab lwm yam. , yog li cov yam ntxwv ntawm cov khoom yas muaj feem xyuam rau qhov loj thiab kev ncaj ncees ntawm qhov kev sib cog lus.
Cov duab, qhov loj thiab kev faib ntawm pub mis rau me nyuam tuaj yeem cuam tshuam cov kev coj ntawm kev pub mov, qhov sib txeeb, kev sib txeeb, thiab sib dhos ua ke. Loj kab (tshwj xeeb tshaj yog cov tuab) ntawm txoj kev pub mis thiab pub txoj hlua pub me me txoj kev pub mis los yog thaum pib mus rau txoj kev pub khiav tawm, qhov kev sib tw loj yog.
Cov pwm nyob rau hauv txoj kev sib xyaw xim muaj qhov kub siab, qeeb txias ntawm cov khoom siv roj, qis qis thiab loj contraction, tshwj xeeb tshaj yog rau cov khoom siv crystallinity vim muaj kev sib txawv ntawm cov ntoo crystallinity thiab kev hloov loj, mus rau sab hauv thiab sab nraud txias thiab ntom uniformity ntawm lub tog yas. Qhov ntxiv, kev tswj ceev thiab lub sijhawm kuj muaj feem cuam tshuam txog qhov kev mob nkeeg.
Kev txhaj tshuaj muaj zog, kev sib txoos me me sib txawv ntawm cov khoom siv me me, kev sib tshuam me me ntawm tus kheej, tom qab lub sij hawm tsis sib haum, ces qhov kev mob nkeeg kuj raug txo qis dua, kub siab, loj contraction, tab sis me me directivity.Yog li, nws tseem tau kho pwm kub, siab, txhaj ceev thiab txias lub sij hawm thaum lub txheej txheem molding.Qhov mould yog tsim raws li cov ntsws ntau yam ntawm plastics, cov thickness thiab cov duab ntawm cov nplais yas, daim ntawv loj thiab kev faib tawm ntawm kev pub mis, ntawm txhua qhov ntawm cov nplais yas yog txiav txim siab raws li kev paub dhau los, thiab tom qab ntawd ces qhov pwm ntawm cov pwm khov yog suav.