抽油机光杆干摩擦系数的研究
Study on dry friction coefficient of the oil pumping polished rod
雷改丽 李飞舟 韩玉强
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作者单位：宝鸡文理学院机电工程系
中文关键字：40MnVB钢，摩擦性能，磨损机理
英文关键字：
中文摘要：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了研究，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。结果显示：在室温范围内，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。
英文摘要：Wear resistance of pumping polished rod are comparatively low, for those reasons caused the technical bottleneck to used pumping unit. In this paper, wear properties of 40MnVB were studied by the mate with TC4 alloy、GCr15 steel and Si4N3 cramic. It were analyzed change relation between velocity and weight loss rate of wear or friction coefficient or topography of wear mark, wear mechanism of 40MnVB alloy was discussed by SEM and EDS. The results are showed that friction coefficient of 40MnVB alloy wear was experience two phases which are preparing wear stage and stable wear stage, The wear mark of 40MnVB alloy is furrow morphology, the wear mechanism of GCr15 steel and Si4N3 cramic are delamination abrasion, adhesive abrasion and oxidation abrasion at room temperature.But mate with TC4 alloy, the friction coefficient changes little, the wear mark of 40MnVB alloy is furrow, and the wear machanism is fatigue abrasion and delamination abrasion.