Ukuphonswa kwesihlabathikuyinqubo yokubumba yendabuko esetshenziswa kabanzi, engahlukaniswa cishe ngokubunjwa kwesihlabathi sobumba, ukubunjwa kwesihlabathi esibomvu, kanye nokubunjwa kwesihlabathi. Isikhunta sesihlabathi esisetshenziswayo ngokuvamile sakhiwa isikhunta sesihlabathi sangaphandle kanye nesisekelo (isikhunta). Ngenxa yezindleko eziphansi kanye nokutholakala kalula kwezinto zokubumba ezisetshenziswa kuukuphonswa kwesihlabathi, kanye nekhono lazo lokusetshenziswa kabusha izikhathi eziningi, ukucubungula okulula, kanye nokusebenza kahle okusheshayo ekukhiqizeni ukuphonswa kwesihlabathi, sekuyisikhathi eside kuyinqubo yendabuko eyisisekelo ekukhiqizweni kokuphonswa kwensimbi, insimbi, kanye ne-aluminium, okwenza zifaneleke kokubili ukukhiqizwa kweqembu kanye nokwezinga elikhulu.
Ngokusho kophenyo, okwamanje embonini yokuthunga yomhlaba wonke, ama-65-75% okuthunga akhiqizwa futhi aphonswe kusetshenziswa izikhunta zesihlabathi, kanti ukukhiqizwa kokuthunga ngobumba kubiza cishe ama-70% alokhu. Isizathu esiyinhloko ukuthi ukuthunga ngobumba kunezindleko eziphansi, izinqubo zokukhiqiza ezilula, imijikelezo yokukhiqiza emifushane uma kuqhathaniswa nezinye izindlela zokuthunga, futhi kukhona nabasebenzi abaningi bezobuchwepheshe ababandakanyeka ekuthungeni ngesihlabathi. Ngakho-ke izingxenye eziningi zezimoto, izingxenye zemishini, izingxenye zehadiwe, izingxenye zesitimela, njll. zikhiqizwa kusetshenziswa ubuchwepheshe bokubumba ngobumba obumanzi. Lapho isikhunta esimanzi singakwazi ukuhlangabezana nezidingo, cabanga ngokusebenzisa izikhunta zesihlabathi esomile noma ezinye izinhlobo zezikhunta zesihlabathi. Isisindo sokuthunga esikhiqizwa yi-clay green sand casting singasukela kumakhilogremu ambalwa kuya kwamashumi amakhilogremu, sithunge ezinye izikhunta ezincane neziphakathi nendawo, kuyilapho ukuthunga okukhiqizwa yi-clay dry sand casting kungaba nesisindo samathani angamashumi. Izindlela ezahlukene zokuthunga ngobumba zinezinzuzo ezihlukile, ngakho-ke ukuthunga ngobumba kuyinqubo yokubumba yeningi lamabhizinisi okuthunga. Eminyakeni yamuva nje, abanye abakhiqizi bokuthunga ngobumba eShayina bahlanganise ukucubungula ngokuzenzakalelayo isihlabathi, imishini yokubumba ngobumba, kanyeimishini yokusakaza okuzenzakalelayoukuze kufezwe ukukhiqizwa okusebenzayo, okungabizi kakhulu, nokukhiqizwa okukhulu kanye nokuphonswa kwezinhlobo ezahlukene zophonswa. Imishini ye-Juneng nayo isondela njalo ekubekweni kwezindinganiso zomhlaba wonke.
Isikhathi sokuthunyelwe: Jan-14-2025