Izinto ezininzi ezichaphazela ukuveliswa kokungunda kwesitofu.

Xa uvelisa ukubunjwa kwenaliti, kukho izinto ezininzi ezichaphazela umgangatho wemveliso.

Ukushwankathela, kukho iingongoma ezine ikakhulu:

1. Ubushushu bomngundo

Ukunciphisa iqondo lokushisa lokungunda, ngokukhawuleza ubushushu bulahlekile ngenxa ye-thermal conduction, iqondo eliphantsi lobushushu lokunyibilika, kunye nokubi nakakhulu.Lo mcimbi ubonakala ngokukodwa xa kusetyenziswa amazinga asezantsi enaliti.

2. Izinto zeplastiki

Ubunzima bezinto eziphathekayo zeplastiki bumisela ubunzima benkqubo yokubumba inaliti.Ukusebenza kwezixhobo zeplastiki kuyahluka kakhulu ngenxa yeentlobo ezahlukeneyo, iimpawu ezahlukeneyo, abavelisi abahlukeneyo, kunye neebhetshi ezahlukeneyo.Iiparamitha zokusebenza ezahlukeneyo zinokukhokelela kwiziphumo zokubumba ezahluke ngokupheleleyo.

3. Iqondo lokushisa lokutofa

Ukunyibilika kugeleza kumgodi wokungunda opholileyo kwaye ulahlekelwe bubushushu ngenxa yokuqhuba kwe-thermal.Kwangaxeshanye, ubushushu buveliswa ngenxa yokucheba.Obu bushushu bunokuba ngaphezulu okanye bungaphantsi kobushushu obuphulukene ne-thermal conduction, ikakhulu ngokuxhomekeke kwiimeko zokubumba inaliti.I-viscosity yokunyibilika iba ngaphantsi njengoko ubushushu bukhula.Ngale ndlela, ukuphakama kweqondo lokushisa kwenaliti, i-viscosity ephantsi yokunyibilika, kwaye incinci yoxinzelelo olufunekayo lokuzalisa.Kwangaxeshanye, ubushushu benaliti bukwathintelwa bubushushu bokuthotywa kwe-thermal kunye nobushushu bokubola.

4. Ixesha lokutofa

Impembelelo yexesha lokutofa kwinkqubo yokubumba inaliti ibonakaliswa kwimiba emithathu:

(1) Ukuba ixesha lokutofa lifinyeziwe, izinga le-shear strain in the melt nalo liya kwanda, kwaye uxinzelelo lwenaliti olufunekayo ukuzalisa umngxuma luya kwanda.

(2) Nciphisa ixesha lokutofa kwaye unyuse izinga lokucheba kwi-melting.Ngenxa yeempawu zokucheba ezincitshisiweyo zeplastiki enyibilikayo, i-viscosity ye-melt iyancipha, kwaye uxinzelelo lwenaliti olufunekayo ukuzalisa i-cavity kufuneka lunciphise.

3Ngoko ke, iqondo lokushisa lokunyibilika liphezulu kwaye i-viscosity iphantsi.Inaliti efunekayo yokuzalisa umngxuma yiStress nayo kufuneka incitshiswe.Umphumo odibeneyo wale miqathango mithathu ingentla yenza ijika le-injection yoxinzelelo olufunekayo ukuze ugcwalise i-cavity ibonakale "U" imile.Oko kukuthi, kukho ixesha lokutofa xa uxinzelelo olufunekayo lwenaliti luncinci.