为了探讨机车柴油机活塞环在边界润滑状态下的磨损特性,研究磨损机理,提高活塞环的耐磨性能,合理选择活塞环,气缸套摩擦副的匹配,以延长该摩擦副的使用寿命,我所应用扫描电镜观察了活塞环的磨损形貌,并根据观察结果进行了粗浅的探讨。一、活塞环的原始状态与观察样品的选择观察用的活塞环取自东风3型、东风4型、NY6型和ND2型内燃机车的柴油机。活塞环的材料包括合金铸铁、球墨铸铁、蠕 In order to study the wear characteristics of locomotive diesel engine piston rings in the boundary lubrication state, study the wear mechanism, improve the wear resistance of piston rings, reasonably choose the match of piston ring and cylinder liner friction pair to prolong the service life of the friction pair The wear appearance of the piston ring was observed by scanning electron microscope, and the superficial discussion was made based on the observation results. First, the original state of the piston ring and observe the sample selection Observation of the piston ring from the Dongfeng 3, Dongfeng 4, NY6 and ND2 diesel locomotive diesel engine. Piston ring materials include alloy cast iron, ductile iron, creep