Lapho kukhiqizwa isikhunta sokujova, kuvame ukuba nezinto eziningi ezithinta ikhwalithi yomkhiqizo.
Ukufingqa, kunamaphuzu amane ngokuyinhloko:
1. Izinga lokushisa lesikhunta
Ukunciphisa izinga lokushisa kwesikhunta, ukushisa kulahleka ngokushesha ngenxa yokushisa okushisayo, ukwehla kwezinga lokushisa lokuncibilika, futhi kubi nakakhulu uketshezi.Lesi simo sibonakala ikakhulukazi lapho kusetshenziswa amazinga aphansi omjovo.
2. Izinto zePlastiki
Ubunzima bezinto ezibonakalayo zepulasitiki bunquma ubunkimbinkimbi benqubo yokubumba umjovo.Ukusebenza kwezinto zepulasitiki kuyahluka kakhulu ngenxa yezinhlobo ezahlukene, izinhlobo ezahlukene, abakhiqizi abahlukene, ngisho namaqoqo ahlukene.Imingcele yokusebenza ehlukene ingase iholele emiphumeleni yokubumba ehluke ngokuphelele.
3. Izinga lokushisa lomjovo
Ukuncibilika kugelezela endaweni epholile yesikhunta futhi ilahlekelwa ukushisa ngenxa ye-thermal conduction.Ngesikhathi esifanayo, ukushisa kukhiqizwa ngenxa yokugunda.Lokhu kushisa kungase kube kuningi noma kube ngaphansi kokushisa okulahleke ukuqhutshwa kwe-thermal, ikakhulukazi kuye ngezimo zokubumba umjovo.I-viscosity yokuncibilika iba phansi njengoba izinga lokushisa likhuphuka.Ngale ndlela, izinga lokushisa lomjovo liphakeme, liphansi i-viscosity yokuncibilika, futhi lincane ingcindezi yokugcwalisa edingekayo.Ngesikhathi esifanayo, izinga lokushisa lomjovo libuye libe nomkhawulo izinga lokushisa lokuwohloka kokushisa kanye nezinga lokushisa lokubola.
4. Isikhathi sokujova
Umthelela wesikhathi somjovo kunqubo yokubumba umjovo ubonakala ezicini ezintathu:
(1) Uma isikhathi somjovo sifinyezwa, izinga le-shear strain in the melt nalo lizokhula, futhi ingcindezi yomjovo edingekayo ukuze kugcwaliswe imbobo nayo izokhula.
(2) Nciphisa isikhathi somjovo futhi ukhuphule izinga lokuqina kwe-shear ekuncibilikeni.Ngenxa yezici zokuncibilika kwe-shear zokuncibilika kwepulasitiki, i-viscosity yokuncibilika iyancipha, futhi ingcindezi yomjovo edingekayo ukugcwalisa i-cavity nayo kufanele yehle.
(3) Nciphisa isikhathi somjovo, izinga le-shear strain ekuncibilikeni liyakhuphuka, kukhulu ukushisa kwe-shear, futhi ngesikhathi esifanayo kulahleka ukushisa okuncane ngenxa yokushisa ukushisa.Ngakho-ke, izinga lokushisa lokuncibilika liphakeme futhi i-viscosity iphansi.Umjovo odingekayo ukuze ugcwalise imbobo ukucindezeleka kufanele kuncishiswe.Umthelela ohlangene walezi zimo ezintathu ezingenhla wenza ijika lomfutho womjovo odingekayo ukuze ugcwalise imbobo ibonakale imise okwe-“U”.Okusho ukuthi, kunesikhathi somjovo lapho ingcindezi yomjovo edingekayo incane.
Isikhathi sokuthumela: Dec-11-2023
