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研究了纤维增强尼龙、球墨铸铁及淬火处理球墨铸铁3种扶正器材料在干摩擦和油井产出水润滑条件下与陶瓷的磨损行为,采用激光共聚焦显微镜、扫描电子显微镜、傅立叶变换红外光谱仪、数字温度计、差示扫描量热仪和X射线光电子能谱分析仪对试验材料的组织、磨损机制和磨损表面的化学结构变化进行分析.结果表明:在润滑条件下3种材料的摩擦系数略小于干摩擦的摩擦系数,其中尼龙的摩擦系数最小.在干摩擦和油田产出水润滑条件下,3种材料中淬火处理球墨铸铁的磨损量最小.在油田产出水润滑条件下尼龙的磨损量超过干摩擦的磨损量,远大于铸铁的磨损量,可归因于热变形、降解以及机械微切削因素的共同作用.
The wear behaviors of three kinds of centralizer materials, including fiber reinforced nylon, ductile iron and quenched ductile iron, with ceramic under dry friction and oil well water lubrication conditions were studied. The effects of laser irradiation, laser confocal microscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, Digital thermometer, differential scanning calorimeter and X-ray photoelectron spectrometer were used to analyze the microstructure, wear mechanism and the chemical structure of the worn surface.The results show that the friction coefficient of the three materials is slightly less than Dry friction friction coefficient, of which the friction coefficient of nylon is minimal.While dry friction and oil production water lubrication conditions, the three kinds of materials quenched ductile iron wear the least amount of oil in the production of water lubrication of nylon wear Exceed the amount of dry friction wear, far greater than the wear of cast iron, can be attributed to the combined effects of thermal deformation, degradation and mechanical micro-cutting factors.