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。
In order to investigated the effect of surface texture on tribological properties of hydrodynamic journal bearing,friction and wear tester based on self-developed,the tribological properties of hydrodynamic journal bearing with surface texture machined 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 parameters(textured area ratios Spand texture aspect ratiosβ)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 than23%.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 secondary hydrodynamic lubrication.
作者
毛亚洲
杨建玺
徐文静
金乐佳
MAO Yazhou;YANG Jianxi;XU Wenjing;JIN Lejia(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471003,China;Department of Electrial Engineering,Luoyang Railway Information Engineering School,Luoyang 471900,China)
出处
《中国表面工程》
EI
CAS
CSCD
北大核心
2020年第6期47-57,共11页
China Surface Engineering
基金
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)
关键词
表面织构
轴承
摩擦磨损
微观形貌
摩擦学性能
surface texture
bearing
friction and wear
micromorphology
tribological property
