Dab tsi yog qhov yam tseem ceeb uas cuam tshuam rau lub pob zom ntawm thermoplastics?

Vim lub ntim hloov hauv cov tsim ntawm crystallization los ntawm cov thermoplastic yas molding txheej txheem, lub sab hauv kev nyuab siab yog siab, qhov kev ntxhov siab nyob rau hauv cov nplais yas yog khov, thiab cov txheej txheem molecular muaj zog. Yog li ntawd, lub shrinkage tus nqi siab tshaj qhov ntawm cov thermosetting yas. , Ntau yam ntsws, pom tseeb, ntxiv rau shrinkage tom qab molding, kev txhom los yog ntswj tom qab kev kho mob cov khoom siv feem ntau loj dua thermoset plastics.

Thaum twg cov yas ntim ua molded, txheej txheej ntawm cov khoom siv hlau tau hu rau ntawm cov kab noj hniav thiab tam sim ntawd txias rau ib lub plhaub qis khoom khov. Vim cov neeg pluag thermal conductivity ntawm cov yas, lub puab txheej ntawm cov yas sab yog maj mam txias rau ib lub siab ceev txheej nrog ib tug loj shrinkage. Yog li ntawd, lub phab ntsa thickness, lub qis txias, thiab lub siab ceev txheej thickly shrink.

Tsis tas li ntawd, qhov muaj qhov tsis muaj qhov nkag los thiab tsis muaj qhov teeb meem thiab qhov muaj nuj nqis muaj feem xyuam rau cov khoom siv khiav tawm, qhov sib npaug ntawm cov khoom thiab kev sib zog, thiab lwm yam zoo li no.

Pub daim ntawv xa tawm, qhov loj me, kev faib cov teeb meem no ncaj qha mus rau cov khoom siv khiav ceev, kev sib npaug, kev ntim khoom thiab lub sij hawm molding. Qhov chaw nres nkoj pub thiab chaw pub khoom pub muaj cov kab loj loj (tshwj xeeb yog tuab ntu) nrog kev sib zog me me, tab sis kev ncaj qha, thiab qhov chaw pub me me pub rau me ntsis thiab ntev ntev. Tshaj tawm mus rau qhov chaw nres nkoj pub los yog thaum uas tig mus rau qhov kev qhia ntawm cov khoom, qhov ntswg yog loj.

Cov kab mob Mould Cov pwm kub yog siab, lub cua txias zis qeeb, qhov ceev yog siab, thiab cov qaub ncaug loj heev. Tshwj xeeb tshaj yog rau cov khoom siv crystallization, lub crystallinity yog siab thiab qhov hloov pauv loj, yog li lub shrinkage ntau dua. Cov pwm kub ntawm lub pwm kuj tseem muaj feem xyuam nrog rau sab hauv thiab sab nraud txias thiab ceev nrawm ntawm cov nplais yas, uas cuam tshuam ncaj qha rau qhov me me thiab kev coj ua ntawm txhua qhov.

Tsis tas li ntawd, tuav lub siab thiab lub sij hawm tseem muaj kev cuam tshuam rau ntawm qhov ntsws. Thaum lub siab loj thiab lub sij hawm ntev, lub shrinkage yog me me tab sis qhov kev taw qhia yog loj. Kev txhaj tshuaj siab yog siab, cov yaj viscosity me me, qhov kev sib tshuam ntawm cov kev sib tshuam hauv kev sib tsom me me, thiab qhov hloov ntawm cov caj pas tom qab demolding loj. Yog li, lub shrinkage kuj yuav txo paab, cov khoom kub yog siab, thiab cov shrinkage loj, tab sis cov directionality yog me me. Vim li no, kho cov pwm kub, qhov siab, kev txhaj tshuaj, thiab lub sijhawm txias thaum lub sij hawm tseem tuaj yeem hloov tau qhov kev cog lus ntawm cov yas.

Cov pwm tsim yog nyob ntawm qhov sib txuam ntawm ntau yam khoom, cov phab ntsa thiab cov qauv ntawm cov khoom yas, qhov loj me thiab kev faib tawm ntawm qhov chaw pub, qhov sib zog ntawm txhua feem ntawm cov khoom yas raws li kev paub, thiab qhov loj ntawm kab noj hniav.

Rau high-precision yas qhov chaw thiab tsis yooj yim tuav lub shrinkage tus nqi, nws yog feem ntau yuav tsum tau siv cov nram qab no txoj kev los tsim cov pwm:

1. Siv lub me ntsws me me rau sab nraud ntawm lub plhaub, thiab coj tus nqi loj zog rau sab hauv lub cev kom tawm mus rau qhov chaw kho rau tom qab hom kev sim.

2. Kev kuaj pwm txiav txim siab rau daim ntawv, qhov loj, thiab kev zuaj ntawm qhov system qhov system.

3. Tom qab cov txheej txheem tom qab ua tiav los txiav txim siab seb qhov kev hloov loj npaum li cas (kev ntsuas yuav tsum yog 24 teev tom qab demoulding).

4, raws li cov lus cog lus hloov pwm.

5. Rov xyuas cov pwm thiab hloov cov txheej txheem tsim nyog. Maj mam hloov tus nqi cog lus kom tau raws li cov khoom ntiag tug