气体渗碳零件出炉后多转入冷却罐冷却。为防止零件表面氧化脱碳,在零件入罐后向罐内倒入一定量的煤油。经此法处理后,不仅零件表面常会布满碳黑,而且处于罐下部的零件仍难免有氧化脱碳的现象发生,后改用破布 Carburized gas carburizing parts after the transfer into the cooling tank cooling. In order to prevent the part surface from oxidative decarburization, a certain amount of kerosene is poured into the tank after the part is put into the tank. After this method of treatment, not only the surface of parts often covered with black, and in the lower part of the tank is still inevitable oxidation decarbonization occurs, after the use of rags