内曲线液压马达柱塞表面处理研究  

Research on Surface Treatment of Piston of Cam Lobe Hydraulic Motor

作　　者：张红娟 崔雪石 应宏 李莹 李成志 尚小明 ZHANG Hongjuan;CUI Xueshi;YING Hong;LI Ying;LI Chengzhi;SHANG Xiaoming(Ningbo STF Hydraulic Transmissions Company,Ningbo Zhejiang 315800,China;School of Mechanical Engineering,Yanshan University,Qinhuangdao Hebei 066004,China)

机构地区：[1]宁波斯达弗液压传动有限公司,浙江宁波315800 [2]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《机床与液压》2024年第13期59-66,共8页Machine Tool & Hydraulics

基　　金：国家重点研发计划项目(2021YFB3400503);河北省高等学校科学技术研究项目(BJK2023043);国家自然科学基金青年科学基金项目(52005429);宁波市重点研发计划暨“揭榜挂帅”项目(2023Z046)。

摘　　要：柱塞的摩擦磨损直接影响内曲线液压马达的启动转矩、工作效率和使用寿命。尽管采用表面处理技术处理可提高柱塞表面的耐磨抗磨性,但现有的涂层工艺存在磨损和易剥落问题。为了探究不同表面处理方式对柱塞耐摩抗磨性的影响,对比分析了MoS_(2)涂层、DLC涂层、QPQ盐浴复合处理3种表面处理技术,通过马达的装配测试,得到最适合内曲线液压马达柱塞表面强化的工艺流程,建立了内曲线液压马达柱塞的耐磨表面工艺流程。试验结果表明:经QPQ盐浴复合处理后的柱塞耐磨性最优,可将马达工作压力提升至25 MPa,有效改善了马达滚柱-柱塞副摩擦磨损的问题。The friction and wear of the piston directly affects the starting torque,working efficiency and service life of the inner curve hydraulic motor.The surface treatment technology can improve the wear resistance of the piston surface,but the existing coating process has the problems of wear and easy peeling.In order to explore the influence of different surface treatments on the friction and wear resistance of the piston,three surface treatment methods of MoS_(2) coating,DLC coating and QPQ salt bath composite treatment were compared and analyzed.Through the assembly test of the motor,the process flow that is most suitable for the surface strengthening of the internal curve hydraulic motor piston was obtained,and the wear-resistant surface strengthening process method of inner curve hydraulic motor piston was established.The test results show that the combined treatment with QPQ salt bath has the best wear resistance,and the working pressure of the motor can be increased to 25 MPa,which effectively improves the friction and wear problem of the motor roller and piston pair.

关 键 词：柱塞 表面强化 摩擦磨损 涂层 

分 类 号：TG174.4[金属学及工艺—金属表面处理]