为提高球磨机衬板的性能,采用多元合金化成分设计,通过适当提高Cr、Mo等中强碳化物形成元素来增加中碳高合金钢组织中的碳化物含量。采用退火、淬火加回火的工艺,得到针状马氏体+碳化物+残余奥氏体组织,其中碳化物大多为点球状和短杆状。结果表明,该材料能满足衬板的硬度要求,同时具有较好的韧性。 In order to improve the performance of the ball mill liner, the multi-alloying component design is adopted to increase the carbide content in the medium-carbon high-alloy steel structure by properly increasing the formation of medium-carbides such as Cr and Mo. Using annealing, quenching and tempering process, to get acicular martensite + carbide + retained austenite, carbides are mostly spherical and short rod-like. The results show that the material can meet the requirements of the liner hardness, while having good toughness.