| 摘要: |
| 为了探究表面织构对动压滑动轴承摩擦学性能的影响,基于自研的摩擦磨损试验机对 BY-BDB 型三维光纤激光织构机加工的表面织构动压滑动轴承摩擦学性能影响进行研究。 通过三维形貌仪、扫描电子显微镜( SEM)以及能谱仪(EDS)对摩擦磨损试验后的微观形貌和摩擦磨损状况进行分析。 研究表明:激光加工会引起表层出现硬化现象且 C 与 O 元素的含量分别增加了 31. 1%与 7. 9%;不同织构参数(面积率 Sp 与深径比 β)与工况(载荷与转速)下的磨损量与摩擦因数呈现先减小后增加的趋势且表面织构对动压滑动轴承的耐摩性能提高了 23%以上。 此外,研究还发现动压滑动轴承摩擦磨损机理是磨粒切削与粘着磨损,而表面织构的减摩机理是能够提高表面耐磨性以及储存磨粒和形成二次动压润滑。 |
| 关键词: 表面织构 轴承 摩擦磨损 微观形貌 摩擦学性能 |
| DOI：10.11933/j.issn.1007-9289.20200905001 |
| 分类号:TG174.44;TG115.58 |
| 文章编号:1007-9289(2020)06-0047-11 |
| 文献标识码:A |
| 基金项目:国家科技重大专项项目(21010098)； 河南省科技攻关计划项目(162102210048)； 河南高性能轴承技术重点实验室开发项目 (2016ZCKF02) |
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| Effects of Surface Texture on Tribological Properties of Hydrodynamic Journal Bearing |
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Mao Yazhou1, Yang Jianxi1, Xu Wenjing2, Jin Lejia1
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1.School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003 , China;2.Department of Electrial Engineering, Luoyang Railway Information Engineering School, Luoyang 471900 , China
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| Abstract: |
| In order to investigated the effect of surface texture on tribological properties of hydrodynamic journal bearing, fric- tion and wear tester based on self-developed, the tribological properties of hydrodynamic journal bearing with surface texture ma- chined by BY-BDB three-dimensional fiber laser marking machine were studied. The surface morphology and friction and wear status of the hydrodynamic journal bearing after friction and wear test were analyzed by scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS). Results show that laser processing can cause surface hardening and the contents of C and O elements increase by 31. 1% and 7. 9% respectively. The wearing capacity and friction coefficient under different textured pa- rameters (textured area ratios Sp and texture aspect ratios β) and working conditions (rotational speeds and loads) show a trend of decreasing first and then increasing. And surface texture can improve antifriction of hydrodynamic journal bearing by more than 23%. Furthermore, it is found that friction and wear mechanism of hydrodynamic journal bearing is abrasive wear and adhesive wear, while the mechanism of surface texture anti-friction is to improve wear resistance, store abrasive particles and forme sec- ondary hydrodynamic lubrication. |
| Key words: surface texture bearing friction and wear micromorphology tribological property |
