【摘要】 抽油机光杆材质的耐磨性已成为制约抽油机的技术瓶颈。采用SEM和EDS等手段对抽油机光杆40MnVB在不同压力和速度下,与TC4、GCr15和Si4N3配副对磨的摩擦磨损性能进行研究,分析了摩擦系数和磨痕形貌、摩擦速度和压力变化的规律,探讨了磨损机理。结果表明:在室温范围内,40MnVB与对磨材料GCr15和Si4N3陶瓷的摩擦系数较高,磨痕主要呈氧化磨损、犁沟形貌,磨损经历了预磨损和稳定磨损两个阶段,磨损机理为剥层磨损、粘着磨损和氧化磨损。与对磨材料TC4对磨的摩擦系数较低,磨痕主要呈犁沟形貌,磨损机理为剥层磨损、疲劳磨损。更多还原

【Abstract】 The wear resistance of pumping polished rod is comparatively low,for those reasons cause the technical bottleneck to used pumping unit.The wear properties of 40MnVB were studied by mating with TC4 alloy,GCr15 steel and Si4N3 cramic.The change relation between velocity and mass loss rate of wear or friction coefficient or morphology pography of wear mark were studied.The wear mechanism of 40MnVB alloy was discussed by SEM and EDS.The results show that the friction coefficient of the alloy experiences two phases which are advancing wear stage and stable wear stage.The wear mark of 40MnVB alloy is furrow morphology.The wear mechanism of GCr15 steel and Si4N3 ceramic are delamination abrasion,adhesive abrasion and oxidation abrasion at room temperature.But mating with TC4 alloy,the friction coefficient changes little,and the wear mark of 40MnVB alloy is furrow,and the wear machanism is fatigue abrasion and delamination abrasion.更多还原