Isu tose tinoziva kuti zvigadzirwa zvepurasitiki zvinowanzova nechiyero che shrinkage, uye inoderera kana ichidzika.Zvigadzirwa zvakagadzirwa kubva kune zvakasiyana siyana zvine shrinkage rates.Pano, tinokurukura zvinhu zvakati wandei zvinopesvedzera kuderera kwemabhini epurasitiki ekuchinja panguva yechikamu chekugadzira.Muchokwadi, mukugadzira, kana iwe uchida kuti saizi yechigadzirwa ive yakakodzera, zvinobatsira kuti unzwisise izvo zvinokanganisa chibvumirano.Mushure mezvose, muindasitiri yezvigadzirwa zvemaindasitiri, midziyo yepurasitiki inochinja kazhinji inowanzogadziriswa midziyo.Saizi yaro uye mataurirwo azvo zvakaringana zvichienderana nechiyero, uye hapana kutsauka.Zvikasadaro, hazvigone kutaurwa kuti generalization yakajairwa.
Iyo molding process yeplastic turnover boxndiyo thermoplastic molding.Nekuda kwekushanduka kwevhoriyamu panguva yekugadzirwa kwekristalllization process, kushushikana kwemukati kwakakura, uye kune kusara kunetseka mukati mechigadzirwa chechiumbwa, uye kutaridzika kwemamorekuru kwakasimba kwazvo.Naizvozvo, ine yakakwira shrinkage rate pane thermosetting mapurasitiki zvigadzirwa.Iine yakakura kudonhedza siyana uye yakanyatsodudzwa nzira.Sezvo chikamu chekunze chechinhu chakanyungudutswa chakabatana negomba remuvhu panguva yechikamu chepurasitiki chakaumbwa, chinobva chatonhodzwa pasi kuti chigadzire goko rakadzika-density yakasimba.Uye isu tose tinoziva kuti thermal conductivity yepurasitiki yakashata zvikuru, uye mukati mebhokisi rekutengesa repurasitiki rinotonhora zvishoma nezvishoma, richigadzira yakakwirira-density yakasimba layer ine yakakura shrinkage rate.Kana rusvingo rwemadziro ruchinonoka, iyo yakakwirira-density layer ichawedzera uye ichaderera zvakanyanya.
Iyo molding process yeplastic turnover boxndiyo thermoplastic molding.Nekuda kwekushanduka kwevhoriyamu panguva yekugadzirwa kwekristalllization process, kushushikana kwemukati kwakakura, uye kune kusara kunetseka mukati mechigadzirwa chechiumbwa, uye kutaridzika kwemamorekuru kwakasimba kwazvo.Naizvozvo, ine yakakwira shrinkage rate pane thermosetting mapurasitiki zvigadzirwa.Iine yakakura kudonhedza siyana uye yakanyatsodudzwa nzira.Sezvo chikamu chekunze chechinhu chakanyungudutswa chakabatana negomba remuvhu panguva yechikamu chepurasitiki chakaumbwa, chinobva chatonhodzwa pasi kuti chigadzire goko rakadzika-density yakasimba.Uye isu tose tinoziva kuti thermal conductivity yepurasitiki yakashata zvikuru, uye mukati mebhokisi rekutengesa repurasitiki rinotonhora zvishoma nezvishoma, richigadzira yakakwirira-density yakasimba layer ine yakakura shrinkage rate.Kana rusvingo rwemadziro ruchinonoka, iyo yakakwirira-density layer ichawedzera uye ichaderera zvakanyanya.
Feed port fomu yekugadzira michina'saizi yakasvibirira kugovera uye zvimwe zvinhu zvinokanganisa zvakananga mafambiro ekuyerera, chigadzirwa zvinhu density kugovera, kudzvanywa kwekudzivirira chibvumirano uye nguva yekuumba, zvisina kunanga kukanganisa shrinkage rate.plastic turnover box.Kana iyo midziyo iine inopinza yakananga, iyo inlet cross chikamu yakakura kwazvo, kunyanya kana yakakura, shrinkage rate ichava diki asi yakanangana.Kusiyana neizvi, kana saizi yekupinza iri diki, nzira yekumisikidza idiki, uye shrinkage rate yakakura kana iyo inopinza iri padyo neinopinza kana kuenderana neinoyerera.
Mamiriro ekuumba magadzirirwo ane simba guru pane shrinkage rate yeplastic turnover box.Semuyenzaniso, kana tembiricha ye mold yakakwira uye zvinhu zvakanyungudutswa zvichikwira zvishoma nezvishoma, pane kukwirira kwakawanda uye mwero wekuderera unova wakakura.Iyo crystalline zvinhu zvine yakakwira crystallinity uye yakakura vhoriyamu, saka iyo shrinkage rate inova yakakura.Iyo mold tembiricha yekugovera uye yemukati nekunze yekutonhora dhigirii uye density yunifomu yezvikamu zvepurasitiki zvinokanganisa zvakananga shrinkage rate uye kutungamira kwechikamu chimwe nechimwe chechigadzirwa.Saizi yekumanikidza kwekuchengetedza uye urefu hwenguva yekuchengeta zvakare ine simba guru padanho rekukanda.Kana kudzvinyirirwa kwakakwirira uye kureba, chiyero chekugadzirisa chinenge chiduku, asi hutungamiri hwakakura.Munguva yekugadzira, iyo shrinkage mwero webhokisi rekuchinja repurasitiki rinogona kushandurwa nenzira kwayo nekugadzirisa tembiricha yekuumbwa uye yekumanikidza jekiseni kumhanya uye nguva yekutonhora.Zvinoenderana nezviri pamusoro, isu tinokwanisa kuona shrinkage mwero wechikamu chimwe nechimwe chechigadzirwa zvinoenderana nebhokisi rekuchinja kwepurasitiki shrinkage madziro ukobvu chimiro feed inlet chimiro uye saizi uye kugoverwa kwekugadzira mold, uye wozoverenga cavity.size.Zvinoenderana neiyo chaiyo shrinkage rate yechigadzirwa, shandura mold uye shandura iyo jekiseni yekuumba mamiriro ekugadzirisa chigadzirwa shrinkage rate kuti isangane nezvinodiwa chaizvo.
Nguva yekutumira: Nov-25-2022