研究了等离子渗氮压力对H13模具钢渗层组织、显微硬度和摩擦学性能的影响,对磨损后的显微形貌进行了分析,对磨损机理进行了探讨。结果表明:选择N2与H2的体积比为2∶1,渗氮温度为540℃,渗氮压力为1066 Pa的工艺条件,渗氮层厚度值最大,硬度曲线最平缓,摩擦因数低,磨损量最小,具有相对较好的耐摩擦磨损性能。 The effect of plasma nitriding pressure on the microstructure, microhardness and tribological properties of the infiltrated layer of H13 die steel was studied. The micro-morphology after wear was analyzed and the wear mechanism was discussed. The results show that the optimal nitriding pressure is 1066 Pa with the ratio of N2 to H2 being 2: 1, the nitriding temperature is 540 ℃ and the nitriding pressure is 1066 Pa. The nitrided layer has the largest thickness, the hardness curve is the lowest, the friction coefficient is low, The smallest, with relatively good friction and wear properties.