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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。
The wear resistance of the sucker rod material has become a technical bottleneck restricting the pumping unit. The friction and wear properties of 40MnVB sucker rod 40MnVB under the condition of different pressure and speed, and TC4, GCr15 and Si4N3 pair-pair grinding were studied by SEM and EDS. The friction coefficient, wear scar morphology, friction velocity and pressure The law of change, discusses the wear mechanism. The results show that the friction coefficient between 40MnVB and the materials GCr15 and Si4N3 is higher at room temperature. The wear marks are mainly oxidative wear and furrow appearance. The wear has two stages of pre-wear and stable wear. The wear mechanism is Peeling wear, adhesive wear and oxidation wear. The friction coefficient of TC4 on the mill is lower than that of the TC4 on the mill, and the abrasion marks are mainly furrow morphology. The wear mechanism is abrasion on the peeling layer and fatigue.