中断正火热处理工艺的研究与应用

Study and Application of Interruptive Normalization Heat Treatment Process

对铸钢中断正火热处理工艺进行了研究。结果表明:铸钢件利用铸造余热进行中断正火法热处理后,其基体组织是下贝氏体+马氏体+少量残余奥氏体。因而使铸钢件的强度和韧性获得最佳匹配,并使铸钢件的耐磨性也相应得到提高。

The interruptive normalization process for producing casting steel is studied. The results show that after interruptive normalization treatment, the matrix microstructure of the casting steel is M+lowcr B+small amount of retained A and the optimal matching of strength and toughness is reached, the wear resistance of the casting steel is increased.