GCr15钢微织构表面固体润滑性能研究  

Research on Solid Lubrication Properties of Micro⁃textured GCr15 Steel

作　　者：华希俊[1] 朱翊航 王皓 平国峰 朱伟 田之翔 解玄 HUA Xijun;ZHU Yihang;WANG Hao;PING Guofeng;ZHU Wei;TIAN Zhixiang;XIE Xuan(School of Mechanical Engineering,Jiangsu University,Zhenjiang Jiangsu 212013,China;Jiangsu CCTY Bearing Co.,Ltd,Zhenjiang Jiangsu 212013,China;School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang Jiangsu 212013,China)

机构地区：[1]江苏大学机械工程学院,江苏镇江212013 [2]江苏希西维轴承有限公司,江苏镇江212013 [3]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《润滑与密封》2020年第9期12-17,共6页Lubrication Engineering

基　　金：镇江市重大科技专项(ZD2018001);镇江市高技术研究重点实验室项目(SS2018007);扬州市科技成果转化项目(YZ2018125);无锡市产业前瞻性与共性关键技术研发项目(WX18ⅡAG405);泰州市科技支撑计划(TG201920).

摘　　要：为研究不同表面处理方式对PTFE/GCr15钢配副表面摩擦学性能的影响,采用Nd:YAG纳秒激光器对GCr15轴承钢下试样表面进行激光织构加工,并以纳米MoS2固体润滑剂作为润滑介质,以黏结有PTFE自润滑衬垫的圆柱销作为上试样进行对摩试验。研究发现:PTFE自润滑衬垫与微织构GCr15摩擦副在干摩擦条件下摩擦因数较低,仅为0.137,而在纳米MoS2固体润滑剂润滑条件下,其摩擦因数进一步下降为0.123,且波动较小。通过EDS分析表明,表面微织构、聚四氟乙烯衬垫与纳米MoS2润滑介质三者具有协同润滑减摩效应,可摩擦副表面生成一层由PTFE与纳米MoS2材料组成的致密、平滑复合润滑膜,有效改善对摩副之间的润滑特性。研究表明,通过表面激光织构技术与固体自润滑技术(添加纳米MoS2)的有效集成融合,可进一步改善PTFE/GCr15钢配副的润滑性能。In order to study on the effects of different surface treatment methods on the tribological properties of the PTFE/GCr15 steel pair,the surface of GCr15 bearing steel was laser⁃textured by Nd:YAG nanosecond laser,the friction test was carried out with nano-MoS2 solid lubricant as lubricating medium and the cylinder pin bonded with PTFE self⁃lu⁃bricating liner as upper sample.The experimental results show that the friction coefficient of the friction pair of PTFE self⁃lubricating liner and micro texture GCr15 is low(only 0.137)under dry friction condition,while under the lubrication of nano MoS2 solid lubricant,the friction coefficient is further decreased to 0.123,and its fluctuation is also small.EDS analysis shows that the micro texture,PTFE self⁃lubricating liner and nano MoS2 solid lubricant have synergistic effect on friction reducing,and a dense and smooth composite lubricating film composed of PTFE and nano MoS2 materials is formed on the surface of the GCr15 bearing steel,which can effectively improve the lubrication characteristics between the friction pairs.Through the effective integration of laser surface texture technology and solid self⁃lubrication technology(adding nano-MoS2),the lubrication properties of the PTFE/GCr15 steel pair can be further improved.

关 键 词：GCR15 表面织构 PTFE 固体润滑 润滑性能 

分 类 号：TH117[机械工程—机械设计及理论]