研究了新型高硅贝氏体铸钢的组织、力学性能及磨料磨损性能。结果表明,新型高硅贝氏体铸钢正火低温回火组织由贝氏体铁素体和奥氏体组成,具有良好的强韧性和耐磨性能。新型高硅贝氏体铸钢中残余奥氏体在磨损过程的作用会发生马氏体相变,提高表面硬度及耐磨性能。销盘磨料磨损以微切削机制为主并伴随应变疲劳机制,冲击磨料磨损以凿削机制为主并伴随应变疲劳机制。 The microstructure, mechanical properties and abrasive wear properties of the new high-silicon bainitic cast steel were studied. The results show that the new high-silicon bainitic cast steel normalizing low-temperature tempering microstructure consists of bainitic ferrite and austenite, with good toughness and wear resistance. The role of residual austenite in the new high-silicon bainitic cast steel in the wear process will occur martensitic transformation, improve the surface hardness and wear resistance. Wear of pin-plate abrasive is dominated by micro-cutting mechanism with strain fatigue mechanism, and impact abrasive wear is mainly chisel-cut mechanism with strain fatigue mechanism.