白口、麻口合金铸铁耐磨性的好坏很大程度上取决于其渗碳体的数量和分布。在使用过程中,零件工作部分生热而使抗磨性降低,通常是与铸铁的基体发生转变有关。在实际生产中,一些合金铸铁的铸态组织中均有 White mouth, Makou alloy cast iron wear good or bad depends largely on the number and distribution of cementite. In the course of use, part of the work part of the heat and wear resistance to reduce the usually cast iron matrix changes. In actual production, some cast iron castings have both organizations