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将开发的新型热冲压模具钢作为试验钢,常用的热作模具钢H13作为对照钢,采用Bruker UMT-3型高温摩擦磨损设备,同时对试验钢和H13钢分别在400、500、600和700℃进行高温摩擦磨损试验。针对摩擦因数和磨损率两方面的试验结果,从微观角度、磨损机理、化学成分和碳化物类型等方面进行了分析和探讨。研究表明,试验钢的高温摩擦磨损性能优于H13钢,温度是影响热冲压模具钢摩擦磨损性能的重要因素,具体体现在氧化层厚度和基体硬度两方面。试验钢的磨损机制主要以氧化磨损和粘着磨损为主,而H13钢同时存在氧化磨损、粘着磨损和磨粒磨损。
The new hot stamping die steel was developed as the test steel, commonly used hot work die steel H13 as the control steel, using the Bruker UMT-3 high temperature friction and wear equipment, while the test steel and H13 steel at 400,500,600 and 700 ℃ for high temperature friction and wear test. According to the test results of friction factor and wear rate, the microscopic analysis, the wear mechanism, the chemical composition and the type of carbide are analyzed and discussed. The results show that the high temperature friction and wear properties of the test steel are better than that of the H13 steel. The temperature is an important factor affecting the friction and wear properties of the hot stamping die steel, which is reflected in the oxide thickness and the substrate hardness. The wear mechanism of the test steel mainly oxidative wear and adhesive wear-based, and H13 steel there are oxidation wear, adhesion wear and abrasive wear.