Izibunjwa zesihlabathi ezisetshenziswa ekubunjweni kwesihlabathi zihlukaniswa zibe izinhlobo ezintathu: isihlabathi esiluhlaza sobumba, isihlabathi esomile sobumba, nesihlabathi esiqiniswe ngamakhemikhali ngokuya ngesibopho esisetshenziswa esihlabathini kanye nendlela esakha ngayo amandla aso. Isihlabathi esingabhaki isihlabathi se-Foundry esisetshenziswa enqubweni yokuphonsa ukwengeza i-resin nezinye izinto zokuphulukisa ukwenza isikhunta sesihlabathi siqine ngokwaso. Isetshenziswa kakhulu embonini ye-Foundry.
Ukungabhaki kuyinqubo yokuphonsa ebandakanya ukusetshenziswa kwezibophezelo zamakhemikhali ukubopha isihlabathi esibumbayo. Isihlabathi sihanjiswa endaweni yokugcwalisa isikhunta silungiselela ukugcwaliswa kwesikhunta. I-mixer isetshenziselwa ukuhlanganisa isihlabathi ne-chemical binder kanye ne-catalyst. Njengoba isihlabathi siphuma ku-mixer, i-binder iqala inqubo yamakhemikhali yokuqina. Le ndlela yokugcwalisa isikhunta ingasetshenziswa engxenyeni ngayinye yesikhunta (ukubhekana nokudonsa). Ingxenye ngayinye yesikhunta ibe isihlanganiswa ukuze yakhe isikhunta esiqinile nesiminyene.
I-rollover ibe isetshenziselwa ukususa uhhafu wesikhunta ebhokisini lephethini. Ngemva kokuba isihlabathi simisiwe, ukugeza isikhunta kungase kusetshenziswe. Ama-sand cores, uma kudingeka, abekwe ekuhuduleni futhi i-cope ivaliwe phezu kwama-cores ukuze kuqedelwe isikhunta. Uchungechunge lwezimoto ezibamba isikhunta kanye nama-conveyor ahambisa isikhunta endaweni yokuthululwa. Uma isitheliwe, isikhunta sivunyelwa ukuba siphole ngaphambi kokunyakaziswa. Inqubo yokunyakazisa ihilela ukuhlephula isihlabathi esibunjiwe kude nokubunjwa. Ukulingisa bese kuqhubekela endaweni yokuqedela yokulingisa ukuze kukhishwe isikhuphukeli, ukuqedela ukusakaza nokuphothulwa. Izingcezu eziphukile zesihlabathi esibunjiwe ziphinde zihlakazwe kuze kube yilapho isihlabathi sibuyiselwa kusayizi wokusanhlamvu. Isihlabathi manje singabuyiselwa ukuze sisetshenziswe kabusha enqubweni yokulingisa noma sisuswe ukuze silahlwe. Ukulungiswa kabusha kwe-thermal kuyindlela ephumelela kakhulu, egcwele yokungabhaki kabusha kwesihlabathi.
Isikhathi sokuthumela: Jul-04-2021