Ukubunjwa kwesikhunta kubhekisela ekubunjweni okusetshenziselwa ukwenza ukubunjwa ohlelweni lokubumba.Ukubunjwa kokubunjwa kuhambisana nenqubo yokuphonsa, ikakhulukazi okuhlanganisa isikhunta sokuphonsa amandla adonsela phansi, isikhunta sokucindezela umfutho ophezulu (isikhunta se-die casting), isikhunta esiphansi sokucindezela, ukukhama isikhunta, njll. Isikhunta sokuphonsa singenye yemishini ebalulekile yenqubo.Ekukhiqizeni ukulingisa, lokhu kunethonya elikhulu kukhwalithi yokulingisa.Ukuthuthukiswa kobuchwepheshe bokusakaza kubaluleke kakhulu ekuthuthukiseni ikhwalithi yokulingisa, ukuthuthukisa ukulingisa okusha kanye nokwenza ngcono izinga lokucubungula okuseduze.Inqubekelaphambili yobuchwepheshe besikhunta izohlinzeka ngokusakazwa okunembe kakhudlwana, okuyinkimbinkimbi kanye nekhwalithi ephezulu kwezimoto, amandla kagesi, ukwakhiwa kwemikhumbi, ezokuthutha ngololiwe, indawo yezindiza kanye nezinye izimboni, futhi ikhuthaze ukuthuthukiswa kwezinga lilonke lemboni yokukhiqiza.

Ngokuthuthuka okusheshayo kwezimboni ezinjengezezimoto, izithuthuthu, kanye ne-aerospace, isikhunta sokuphonsa sikhula ngesilinganiso esingaphezu kwama-25% ngonyaka.Ubuchwepheshe besikhunta se-casting buye benza inqubekelaphambili enkulu, kodwa ibhulokhi yenjini enkulu ye-aluminium alloy emelwe izimoto kanye nesikhunta esiyinkimbinkimbi se-die-casting sincike kakhulu ekuthengisweni kwamanye amazwe.imboni yezwe lami yezimoto nezithuthuthu ingene enkathini yokukhula ngokushesha, futhi umphumela wayo ukhule ngokuphawulekayo iminyaka eminingi ilandelana.Kungabikezelwa ukuthi eminyakeni eyi-10 kuya kwengama-20 ezayo, ukukhiqizwa kwesikhunta esisansimbi ezweni lami kuzoqhubeka nokuthola ugqozi oluqinile nokukhula ngokushesha ikakhulukazi embonini yezimoto.Ngomongo wokongiwa kwamandla kanye nokuncishiswa kokukhipha intuthu, ukukhula kwezibumbe zokubunjwa kwensimbi eyinsimbi kuzoncipha, kuyilapho isikhunta se-aluminium-magnesium alloy die-casting, isikhunta esinengcindezi ephansi kanye nokubunjwa kokuminyanisa kuzokhuphuka kakhulu.