Ukulingiswa kwesihlabathi nokutshalwa kwezimali kuyizinqubo ezimbili eziyinhloko zokusakaza kuma-Foundries anamuhla. Zombili lezi zinqubo zokusakaza zinezici zazo ngazinye, izinzuzo nezinkinga. Ukusakazwa kwesihlabathi kusebenzisa isihlabathi esiluhlaza noma isihlabathi esomile ukwakha isikhunta ngaphambi kokuthela. Ngaphambi kokuba isikhunta senziwe, amaphethini okhuni, epulasitiki noma wensimbi kufanele akhiqizwe okokuqala ukwenza umgodi wesikhunta sesihlabathi. Isihlabathi esiluhlaza nesihlabathi esomile kungasetshenziswa kabusha ngemuva kokuphonswa nokuzamazama.
Ngesikhathi sokufakwa kotshalo-mali, umumo noma isifaniso sakhiwa (imvamisa ngaphandle kwe-wax) bese sifakwa ngaphakathi kwesilinda sensimbi esibizwa ngeflask. I-plaster emanzi ithululelwa kusilinda ezungeze isimo se-wax. Ngemuva kokuthi ukhonkolo usuqine, isilinda esinephethini ye-wax nosimende sifakwa eziko futhi siyashiswa kuze kube yilapho umusi usuphenduke umphunga ngokuphelele. Ngemuva kokuthi i-wax isishile ngokuphelele (de-waxing), ibhodlela liyasuswa kuhhavini, bese insimbi encibilikisiwe (imvamisa insimbi ye-alloy, insimbi engagqwali, ithusi ... njll) ithelwa emgodini oshiywe yi-wax. Lapho insimbi isipholile futhi yaqina, usimende uyasuswa, bese kukhishwa insimbi.
Ukulingiswa kuyasiza kakhulu ekwenzeni izinto ezibunjiwe noma ubujamo bobunjiniyela nge-geometry eyinkimbinkimbi ngensimbi. Izingxenye zokusakaza zinokubukeka okuhlukile kuzo, zihluke kakhulu ezingxenyeni ezenziwe ngomshini. Obunye ubujamo obekuzoba nzima ukubusebenzisa benziwa kalula. Kukhona futhi imfucumfucu yezinto ezibonakalayo ngobukhulu obuningi, ngoba ngokungafani nemishini, ukuphonsa akuyona inqubo yokukhipha. Kodwa-ke, ukunemba okutholakala ngokusakaza akukuhle njengokukhanda.
Kufanele Ukukhethe Nini Ukutshalwa Kwezimali Futhi Kufanele Ukhethe Nini Ukusakaza Isihlabathi?
Enye inzuzo enkulu yokusakazwa kokutshalwa kwezimali ukuthi kungavumela ukusikeka kwephethini, ngenkathi ukusakazwa kwesihlabathi kungavumi. Ekujuleni kwesihlabathi, iphethini idinga ukukhishwa esihlabathini ngemuva kokuthi igcwele, kanti ekutshalweni kwemali isamba iphethini ivuthwa ukushisa. Ukuphonsa okungenalutho kanye nezigaba ezincanyana kungenziwa kalula ngokukhipha utshalomali, futhi ukuphela okungcono komhlaba kutholakala ngokuvamile. Ngakolunye uhlangothi, ukusakaza utshalomali kuyinkqubo efike ngesikhathi futhi ebiza kakhulu, futhi ingaba nezinga lempumelelo eliphansi kunokusakaza kwesihlabathi njengoba kunezinyathelo eziningi kunqubo namathuba amaningi ezinto ezingahambi kahle.
Isikhathi Iposi: Dec-28-2020