对经不同深冷处理后的Cr12钢进行力学性能检测和摩擦磨损试验。结果表明:深冷处理可不同程度地提高Cr12钢的硬度;980℃淬火+深冷处理+180℃×8h回火处理后,Cr12钢的冲击韧度有所降低;深冷处理可明显提高Cr12钢的耐磨性并降低钢中残留奥氏体含量,其中深冷处理6h后耐磨性提高最为显著,其相对磨损率下降了45.1%,残留奥氏体含量降幅达到84.2%。 After cryogenic treatment of Cr12 steel mechanical properties testing and friction and wear tests. The results show that the cryogenic treatment can improve the hardness of Cr12 steel to different extents; the impact toughness of Cr12 steel decreases after the quenching + cryogenic treatment at 980 ℃ and tempering at 180 ℃ for 8h; the cryogenic treatment can obviously improve the resistance of Cr12 steel Grinding and reduce the residual austenite content of steel, which after 6h cryogenic treatment the most significant increase in wear resistance, the relative wear rate decreased 45.1%, retained austenite content decreased 84.2%.