本文对渗硼加等温淬火和等温淬火的65Mn钢的磨料磨损特性、渗硼层和基体的配合、渗硼层深度对耐磨性的影响进行了研究。同时应用金相显微镜和扫描电镜对试样的磨损表面进行了观察,探讨了渗硼层的磨料磨损机理。 室内模似试验表明,65Mn钢渗硼加等温淬火工艺使其抗磨料磨损性能大幅度提高,渗硼犁铧的耐磨寿命较等温淬火犁铎提高50％以上。 In this paper, the effects of boronizing plus isothermal quenching and austempering on the wear properties of 65Mn steel, the combination of boronizing layer and substrate, and the depth of boronizing layer on wear resistance were studied. At the same time, the wear surface of the sample was observed by metallographic microscope and scanning electron microscope, and the abrasive wear mechanism of boronizing layer was discussed. The indoor simulation test shows that the boronizing and isothermal quenching process of 65Mn steel increases the abrasion resistance of the abrasives greatly, and the wear life of boronized ploughshare is more than 50% higher than that of isothermal quenching.