Umsebenzi: Uma ukuguqulwa kokufakwayo kugcina isivinini sokujikeleza esizinzile.Imikhiqizo yenziwe ngekhwalithi ephezulu yokukhiqizwa kwensimbi ye-alloy. Amapuleti ashaywa futhi acindezelwe amabhore ngobuchwepheshe bokunemba. Iphinikhodi, isihlahla, i-roller senziwa ngomshini osebenza kahle kakhulu othomathikhi kanye nemishini yokugaya ezenzakalelayo, bese ngokusebenzisa ukwelashwa okushisa kwe-carburization, isithando somlilo se-carbon ne-nitrogen mesh yebhande, inqubo yokuqhuma kwendawo njll.