磨粒尺寸对往复密封用HNBR摩擦学性能的影响  

Effect of Abrasive Size on Tribological Properties of HNBR for Reciprocating Seal

作　　者：甘豪 何霞[1,2] 王国荣[1,2,3] 胡刚 张文超[1,2] GAN Hao;HE Xia;WANG Guorong;HU Gang;ZHANG Wenchao(School of Mechatronic Engineering,Southwest Petroleum University,Sichuan Chengdu 610500,China;Energy Equipment Institute,Southwest Petroleum University,Sichuan Chengdu 610500,China;Oil and Gas Equipment Technology Sharing and Service Platform of Sichuan Province,Sichuan Chengdu 610500,China)

机构地区：[1]西南石油大学机电工程学院,四川成都610500 [2]西南石油大学能源装备研究院,四川成都610500 [3]石油天然气装备技术四川省科技资源共享服务平台,四川成都610500

出　　处：《摩擦学学报（中英文）》2024年第8期1009-1020,共12页Tribology

基　　金：国家自然科学基金项目(52004240);四川省科技厅自然科学基金创新研究群体项目(2020ZHCG0048);四川省科技厅自然科学基金创新研究群体项目(2023NSFSC1980)资助。

摘　　要：为探究油润滑条件下磨粒尺寸对氢化丁腈橡胶摩擦性能的影响,使用UMT摩擦磨损试验机开展了高速往复摩擦试验.试验前对磨粒进行能谱分析并使用激光粒度分布仪统计其粒度分布.试验后使用白光干涉仪、扫描电镜对HNBR(氢化丁腈橡胶)磨损形貌进行表征,为磨粒磨损机理的分析提供了支撑.磨损区域EDS(能量色散X射线谱仪)结果表明,各尺寸磨粒在HNBR表面不同程度的影响摩擦化学反应.磨损形貌表明磨粒在300目和150目之间存在由滚动向滑动转变的临界尺寸.在摩擦力位移曲线中发现每个往复周期内都存在2个大小不一的波峰,对其积分可得往复过程摩擦做功差,波峰差体现往复不平稳性.根据摩擦系数时变曲线将摩擦过程分为非稳态、稳态阶段.在摩擦非稳态阶段,磨粒使摩擦功往复差值增大.磨粒尺寸越大,往复摩擦做功差值也越大,趋于平稳越慢.在摩擦稳态阶段,与纯润滑组相比,滑动磨粒增大往复摩擦做功差值,滚动磨粒减小往复摩擦做功差值.滚动磨粒尺寸越大,往复摩擦做功差值越小.High-speed reciprocating friction experiments were carried out using UMT friction and wear tester in order to investigate the effect of abrasive particle size on the tribological properties of HNBR under oil lubrication.Before the experiment,the abrasive particles were analyzed by energy spectrum,and the particle size was counted by laser particle size analyzer.After the experiment,the surface wear morphology of HNBR was characterized by three-dimensional morphology instrument and scanning electron microscope,which supported the analysis of wear mechanism of abrasive particles.The surface of HNBR in pure lubrication group produced wear debris and small pits formed by filler shedding.The 300 mesh group produced a large number of scratches with a width of 4~7μm.The depth of abrasive escape pitted in 150 mesh group was greater than that in 300 mesh group.In addition to pit and scratch,the 100 mesh group also included furrows and incomplete peeling caused by abrasive particles on the surface of HNBR.The EDS analysis of the wear zone showed that the tribochemical reactions of different sizes of abrasive particles on the surface of HNBR had different degrees.Wear morphology showed that there was a critical size between 300 mesh and 150 mesh for the transition from rolling to sliding.Abrasive particles participated in sliding friction and wear when the critical size was lower than the critical size,and rolling friction and wear when the critical size was higher than the critical size.Under the action of torque,some rolling abrasive particles were broken and below the critical size,which changed from rolling to sliding and formed scratches on the surface of HNBR,thus increasing the wear amount.The ability of rolling to form pits and crushing decreased with the decrease of abrasive particle size,and the ability of rolling to slip increased with the decrease of abrasive particle size.Below the critical size part of abrasive particles embedded in HNBR acted as a cutting tool and push non-embedded abrasive particles to prod

关 键 词：氢化丁腈 磨粒尺寸 往复运动 磨粒磨损 临界尺寸 

分 类 号：TH117.1[机械工程—机械设计及理论]