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销-盘摩擦磨损实验研究表明:TiNi60合金在PAO油润滑下具有优异的摩擦学性能,稳定阶段的平均摩擦系数由干摩擦的0.6降低到油润滑下的0.1,而且非常稳定。从SEM磨损形貌图可知:油润滑下TiNi60合金的磨损表面光滑,粘着磨损明显减弱。在实际研究中,仿真计算是获得高速滚动轴承在油气润滑下各项工作性能数据的有效方法。采用FLUENT数值计算了油-气两相流在水平管子内的流型分布,得到了最佳油、气的进口速度,为高速滚动轴承用TiNi60合金在油气润滑下的使用提供了理论依据。仿真计算结果表明:当空气速度为10m/s和油速度为0.05m/s时,可以得到最佳的环状流型分布。
Pin-plate friction and wear experiments show that: TiNi60 alloy PAO oil lubrication has excellent tribological properties, the average friction coefficient of the stable phase from the dry friction of 0.6 down to 0.1 oil lubrication, and very stable. It can be seen from the SEM abrasion topography that the wear surface of TiNi60 alloy under oil lubrication is smooth and the adhesive wear is obviously weakened. In the actual research, the simulation calculation is an effective method to get the data of performance of high-speed rolling bearing under oil-gas lubrication. The flow distribution of oil-gas two-phase flow in the horizontal pipe was calculated by FLUENT numerical model, and the optimal inlet velocity of oil and gas was obtained, which provided a theoretical basis for the use of TiNi60 alloy in oil-gas lubrication for high-speed rolling bearing. The simulation results show that when the air velocity is 10m / s and the oil velocity is 0.05m / s, the best annular flow pattern distribution can be obtained.