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对 3Cr2 W8V钢高温高载下的干摩擦滑动磨损特性及磨损面形貌、磨损面表层和次表层的组织和硬度进行了试验和分析。结果表明 :高载下 3Cr2 W8V钢的力学性能是决定材料磨损特性的主要因素 ;氧化物磨屑对磨损面的保护作用是通过氧化物磨屑对磨损面的大面积覆盖实现的 ;室温低载下磨损面上形成氧化物磨屑的覆盖 ,而在室温高载和高温下都未形成氧化物磨屑的覆盖 ;高温高载下 ,主要因 3Cr2 W8V钢本身承载能力下降 ,氧化物磨屑未能覆盖于磨损面上 ,故对磨损面起不到保护作用。
The dry friction and sliding wear characteristics, the wear surface morphology, microstructure and hardness of the surface and subsurface of 3Cr2 W8V steel were tested and analyzed under high temperature and high load. The results show that the mechanical properties of 3Cr2 W8V steel under high load are the main factors that determine the wear characteristics of the material. The protective effect of oxide wear debris on the wear surface is achieved by covering the wear surface with oxide wear debris. The formation of wear debris on the surface of the oxide wear debris cover, and at room temperature high temperature and high temperature are not formed under the oxide wear debris cover; under high temperature and high load, mainly due to 3Cr2 W8V steel carrying capacity decreased, oxide wear debris Can cover the wear surface, so the wear surface can not play a protective effect.