Kwiimeko eziqhelekileyo, ukuchaneka kobukhulu bezinto ezicociweyo ngokuchanekileyo kuchatshazelwa zizinto ezininzi ezifana nesakhiwo sokufaka, izinto ezicociweyo, ukwenza isikhunta, ukwenza iqokobhe, ukubhaka, ukuthulula, njl. Naluphi na ulungiselelo okanye ukusebenza okungafanelekanga kwanoma yiyiphi na ikhonkco kuya kutshintsha izinga lokuncipha kwento ecociweyo. Oku kukhokelela ekuphambukeni ekuchanekeni kobukhulu bezinto ezicociweyo kwiimfuno. Ezi zilandelayo zizinto ezinokubangela iziphene ekuchanekeni kobukhulu bezinto ezicociweyo ngokuchanekileyo:
(1) Impembelelo yesakhiwo sokufaka: a. Ubukhulu bodonga lokufaka, izinga lokuncitshiswa okukhulu, udonga oluncinci lokufaka, izinga lokuncitshiswa elincinci. b. Izinga lokuncitshiswa kwamahhala likhulu, kwaye izinga lokuncitshiswa okuthintelweyo lincinci.
(2) Impembelelo yezinto ezisetyenziswa xa kuphoswa: a. Okukhona umxholo wekhabhoni uphezulu kwizinto ezisetyenziswayo, kokukhona umlinganiselo wokuncipha komgca uphantsi, kwaye okukhona umxholo wekhabhoni uphantsi, kokukhona umlinganiselo wokuncipha komgca uphezulu. b. Izinga lokuncipha komgca wezinto ezisetyenziswayo zezi zilandelayo: izinga lokuncipha komgca wekhabhoni K=(LM-LJ)/LJ×100%, iLM bubungakanani bomngxuma, kwaye iLJ bubungakanani bomngxuma. I-K ichaphazeleka zezi zinto zilandelayo: i-wax mold K1, isakhiwo somngxuma wekhabhoni K2, uhlobo lwe-alloy K3, ubushushu bokuthulula i-K4.
(3) Impembelelo yokwenza isikhunta kwizinga lokuncipha kwe-linear ye-castings: a. Impembelelo yobushushu bokufakwa kwe-wax, uxinzelelo lokufakwa kwe-wax, kunye nexesha lokubamba uxinzelelo kubungakanani botyalo-mali yeyona nto ibonakalayo kubushushu bokufakwa kwe-wax, ilandelwa luxinzelelo lokufakwa kwe-wax, kwaye ixesha lokubamba uxinzelelo liyaqinisekiswa Emva kokuba utyalo-mali lwenziwe, alunampembelelo ingako kubungakanani bokugqibela botyalo-mali. b. Izinga lokuncipha kwe-linear yezinto ze-wax (mold) limalunga ne-0.9-1.1%. c. Xa isikhunta sotyalo-mali sigcinwa, kuya kubakho ukuncipha okungakumbi, kwaye ixabiso laso lokuncipha limalunga ne-10% yokuncipha iyonke, kodwa xa igcinwe iiyure ezili-12, ubungakanani besikhunta sotyalo-mali buzinzile ngokusisiseko. d. Izinga lokuncipha kwe-radial yesikhunta se-wax lingama-30-40% kuphela wezinga lokuncipha ngobude. Ubushushu bokufakwa kwe-wax bunempembelelo enkulu kakhulu kwizinga lokuncipha kwasimahla kunezinga lokuncipha elithintelweyo (ubushushu obungcono bokufakwa kwe-wax yi-57-59℃, Okukhona ubushushu buphezulu, kokukhona ukuncipha kukhulu).
(4) Impembelelo yezinto zokwenza amaqokobhe: isanti ye-zircon, umgubo we-zircon, isanti ye-Shangdian kunye nomgubo we-Shangdian ziyasetyenziswa. Ngenxa yomlinganiselo wazo omncinci wokwandiswa, yi-4.6×10-6/℃ kuphela, zinokungahoywa.
(5) Isiphumo sokubhaka iqokobhe: Ngenxa yokuba i-expansion coefficient yeqokobhe incinci, xa ubushushu beqokobhe buyi-1150℃, yi-0.053% kuphela, ngoko ke inokungahoywa.
(6) Impembelelo yobushushu bokuphosa: okukhona ubushushu bokuphosa buphezulu, kokukhona izinga lokuncipha liphezulu, kwaye okukhona ubushushu bokuphosa buphantsi, kokukhona izinga lokuncipha lincinci, ngoko ke ubushushu bokuphosa bufanele ukuba bufanelekile.
Ixesha lokuthumela: Novemba-15-2021