Abstract: In order to explore an effective way to improve the anti-friction and wear resistance of the disc friction pairs, the port plates of the swash plate piston pump were taken as the research object. Under the same conditions of area texture ratio and section depth shape, the variation of friction coefficient of the port plates machined elliptical and circular opening discrete pit micro-texture and grooved micro-texture with morphology, rotation speed, and pressure were studied by simulation and experiments comprehensively. The results show that the friction coefficient decreases significantly with the increase of rotational speed and decreases with the increase of pressure, the elliptical opening discrete pit micro-texture is the best among the three micro-textures to improve the performances of port plates. The multi-objective parameter optimization of elliptical opening discrete pit micro-texture was carried out, and the optimal parameters are obtained as follows: the radius of the long axis of the ellipse opening is as 452 μm, the short half axis is as 187 μm, and the radial center distance is as 0.7 mm. The experiments verify that the optimized textures friction coefficient and wear amount are reduced to different degrees under different working conditions compared with that before optimization. 

Key words: disc friction pair, micro-texture, friction and wear, parameter optimization, rotational speed, stress

摘要： 为探索提高盘式摩擦副抗摩擦磨损性能的有效途径，以斜盘柱塞泵配流副为研究对象，综合运用仿真分析及试验研究方法对比分析了面积织构率和截深形状相同条件下，椭圆开口和圆形开口离散凹坑微织构及沟槽形微织构配流副的摩擦因数随织构形貌、转速和压力的变化规律。研究结果表明：摩擦因数随转速的增大而显著降低，随压力的增大而降低，椭圆开口离散凹坑微织构为三种微织构中提高配流副性能最优者。对椭圆开口离散凹坑微织构进行多目标参数优化，得出的最优参数为：椭圆开口长轴半径为452 μm、短半轴为187 μm、径向中心距为0.7 mm。试验结果表明，优化后的织构在不同工况下较优化前摩擦因数和磨损量均有不同程度的降低。

关键词: 盘式摩擦副, 微织构, 摩擦磨损, 参数优化, 转速, 应力