Ekukhiqizweni kwe-Ductile Iron (ebuye yaziwe ngokuthi yi-Ductile Iron), ukusetshenziswa kwe-carburizers esezingeni eliphezulu kubalulekile ukuze kuzuzwe izakhiwo ezifiselekayo zomkhiqizo wokugcina.I-recarburizer evame ukusetshenziswaI-graphite petroleum coke (GPC), eyenziwe nge-petroleum coke ngokusebenzisa inqubo yokushisa ephezulu.

Lapho ukhetha i-recarburiser yokukhiqiza i-iron ductile, izici eziningana okufanele zicatshangelwe.Okubaluleke kakhulu kulezi zici yikhabhoni engaguquki, okuqukethwe kwesibabule, okuqukethwe komlotha, okuqukethwe okuguquguqukayo, okuqukethwe kwe-nitrogen nokuqukethwe kwe-hydrogen.

Okuqukethwe kwekhabhoni engaguquki kuyiphesenti lekhabhoni esele ku-graphite petroleum coke ngemuva kokuthi kushiswe zonke izivunguvungu nomlotha.Uma kuphezulu okuqukethwe kwekhabhoni engaguquki, kuba ngcono i-recarburiser ekukhuliseni okuqukethwe kwekhabhoni kunsimbi encibilikisiwe.i-graphite petroleum coke enekhabhoni engaguquki okungenani engu-98% iyanconywa ukuze kukhiqizwe i-ductile iron.

I-Sulfur iwukungcola okuvamile ku-graphite petroleum coke futhi ukuba khona kwayo kungathinta kabi izakhiwo zokugcina ze-ductile iron.Ngakho-ke, kubalulekile ukukhetha i-graphite petroleum coke enokuqukethwe okuphansi kwesulfure (ngokuvamile ngaphansi kwe-1%).

Okuqukethwe komlotha inani lezinto ezingashi ezikhona ku-graphite petroleum coke.Okuqukethwe komlotha omningi kudala i-slag esithandweni, okwandisa izindleko futhi kunciphise ukusebenza kahle.Yingakho kunconywa ukusebenzisa i-graphite petroleum coke enokuqukethwe komlotha okungaphansi kuka-0.5%.

Izinto eziguquguqukayo zihlanganisa noma yimaphi amagesi noma uketshezi olukhishwa lapho i-graphite petroleum coke ishiswa.Okuqukethwe okuguquguqukayo okuphezulu kuphakamisa ukuthi i-graphite petroleum coke ingakhulula amagesi amaningi, okungadala i-porosity emkhiqizweni wokugcina.Ngakho-ke, i-graphite petroleum coke enento eguquguqukayo engaphansi kuka-1.5% kufanele isetshenziswe.

Okuqukethwe kwe-nitrogen okunye ukungcola ku-graphite petroleum coke okufanele kugcinwe kuphansi njengoba kungathinta izakhiwo zemishini ye-nodular cast iron.i-graphite petroleum coke ene-nitrogen engaphansi kuka-1.5% ilungele ukukhiqizwa kwe-iron cast nodular.

Okokugcina, okuqukethwe kwe-hydrogen kungenye into okufanele icatshangelwe lapho kukhethwa i-carbon raiser yokukhiqiza i-nodular cast iron.Amazinga aphezulu e-hydrogen angaholela ekwandeni kokuqina nokuncipha kwe-ductility.I-graphite petroleum coke ene-hydrogen engaphansi kuka-0.5% iyakhethwa.

Kafushane, ukukhiqizwa kwensimbi eyi-nodular cast kudinga i-carbon raiser yekhwalithi ephezulu ehlangabezana nezidingo ezithile zokuqukethwe kwekhabhoni engashintshi, okuqukethwe kwesibabule, okuqukethwe komlotha, okuguquguqukayo, okuqukethwe kwe-nitrogen, nokuqukethwe kwe-hydrogen.Ukusetshenziswa kwe-graphite petroleum coke ehlangabezana nalezi zidingo kuzoqinisekisa ukukhiqizwa kwensimbi ephezulu ye-nodular cast iron, eyaziwa nangokuthi i-Ductil Iron noma i-SG iron.