考虑粗糙度的水润滑复合微织构推力轴承性能分析_王丽丽.pdf

表面技术 第 52 卷 第 6 期 256 SURFACE TECHNOLOGY 2023 年 6 月 收稿日期：20220511；修订日期：20220826 Received：2022-05-11；Revised：2022-08-26 基金项目：山东省矿山机械工程重点实验室校企联合基金（2022KLMM304）；山东省博士后创新项目专项资金（201701016）Fund：Shandong Province Key Laboratory of Mine Mechanical Engineering,Shandong University of Science and Technology(2022KLMM304);Shandong Provincial Postdoctoral Innovation Foundation(201701016)作者简介：王丽丽（1979），女，博士，副教授，主要研究方向为摩擦学。Biography：WANG Li-li(1979-),Female,Doctor,Associate professor,Research focus:tribology.引文格式：王丽丽,段敬东,李龙超,等.考虑粗糙度的水润滑复合微织构推力轴承性能分析J.表面技术,2023,52(6):256-265.WANG Li-li,DUAN Jing-dong,LI Long-chao,et al.Performance of Water-lubricated Composite Micro-texture Thrust Bearing Considering RoughnessJ.Surface Technology,2023,52(6):256-265.考虑粗糙度的水润滑复合微织构 推力轴承性能分析 王丽丽，段敬东，李龙超，刘迎澳，包云龙（山东科技大学 机械电子工程学院，山东 青岛 266590）摘要：目的目的 改善摩擦副润滑性能，研究考虑表面粗糙度时复合微织构参数对推力轴承性能的影响，同时通过实验进一步说明复合微织构的减摩作用机理。方法方法 建立表面粗糙度模型、复合微织构的水膜厚度方程和推力轴承的广义雷诺方程，研究不同复合微织构形状和排列方式推力轴承的性能。通过摩擦磨损实验验证复合微织构形状对轴承润滑性能的影响。结果结果 复合微织构有效改善了摩擦副的摩擦学性能，在 15 种复合微织构和 2 种单一织构中，复合微织构的承载性能均优于单一鱼形和圆形织构，圆形复合鱼形微织构具有较好的润滑性能；当不同微织构沿周向排列时获得了较好的润滑参数，相较于径向排列，其承载力提升了45.45%；考虑表面粗糙度时，轴承的润滑性能得到提高，当尺度系数为 0.002 2、分维系数为 2.6 时，轴承获得了较好的润滑性能，相较于未考虑粗糙度时其承载力得到提高。结论结论 实验得出与理论相同的结论，圆形复合鱼形微织构具有较好的承载力和减摩性能，合适的复合微织构参数可以有效提高水润滑推力轴承的润滑性能，降低摩擦因数。关键词：粗糙度；复合微织构；推力轴承；微织构参数；摩擦实验 中图分类号：TH117 文献标识码：A 文章编号：1001-3660(2023)06-0256-10 DOI：10.16490/ki.issn.1001-3660.2023.06.022 Performance of Water-lubricated Composite Micro-texture Thrust Bearing Considering Roughness WANG Li-li,DUAN Jing-dong,LI Long-chao,LIU Ying-ao,BAO Yun-long(College of Mechanical and Electronic Engineering,Shandong University of Science and Technology,Shandong Qingdao 266590,China)ABSTRACT:Surface micro texture technology is a technology to improve the surface lubrication performance of friction pairs.The research on the micro texture thrust bearing mainly focuses on the effect of roughness on the lubrication performance of bearings or the effect of single micro texture on the lubrication performance of bearings.To improve the lubrication performance of friction pairs,the effect of different composite micro-texture parameters on the performance of 第 52 卷 第 6 期 王丽丽，等：考虑粗糙度的水润滑复合微织构推力轴承性能分析 257 thrust bearings considering roughness was studied.At the same time,experiments were used to further illustrate the anti-friction mechanism of the micro-texture.Based on the surface roughness model,water film thickness equation of composite micro-texture and the generalized Reynolds equation of thrust bearings,the performance of thrust bearings with different composite micro-texture shapes and arrangements was studied.The effect of composite micro-texture shapes on bearing lubrication performance was verified by friction experiments.The results were as follows:composite micro-texture could effectively improve the tribological properties of friction pairs.In 15 composite micro-textures and 2 single textures,the bearing capacity of composite micro-texture was better than that of single fish texture and circular texture,and the circular composite fish-shaped micro-texture had better lubrication performance.When different micro-textures were arranged in the circumferential direction,the bearing capacity increased by 45.45%.When the long side of the micro texture shape was perpendicular to the radial direction of bearing,and the convergence clearance was along the direction of inlet water,the outlet area of water film decreased gradually,which would increase the hydrodynamic effect.And the fish micro-texture had the convergence trend of two area reductions.Therefore,the composite bearing performance of the fish micro texture was better,the lubrication performance of the circular composite fish-shaped micro-texture was better,and the bearing performance of the triangular composite fish-shaped micro-texture was better.Considering the surface roughness,the lubrication performance of the bearing was improved.The bearing capacity without considering roughness was 184.45 kN.The bearing capacity considering roughness was 188.46 kN.The bearing capacity increased compared with the situation when the roughness was not considered.When the scale coefficient was 0.002 2 and the fractal dimension coefficient was 2.6,the bearing obtained better lubrication performance.When the micro-texture shape was a smooth surface,the experimental average friction coefficient and instantaneous friction coefficient were larger,the average friction coefficients of the circular shaped texture and fish-shaped texture were relatively close;the fish-shaped composite circular texture and the square composite fish-shaped texture had the lowest friction coefficients,which were 35.298%and 32.781%lower than that of the smooth friction pair,respectively.The friction coefficient of the circular composite fish texture was generally lower than that of the square composite fish-shaped micro-texture surface.Experiments reach the same conclusion as the theory,the composite texture of circular and fish sha