电磁离合器用增摩材料的摩擦磨损性能研究  

Friction and wear properties of friction-enhancing materials for electromagnetic clutches

作　　者：刁子宇 袁野 李超 刘星明 刘震涛[1] 张宇[1] DIAO Ziyu;YUAN Ye;LI Chao;LIU Xingming;LIU Zhentao;ZHANG Yu(Power Machinery&Vehicular Engineering Institute,Zhejiang University,Hangzhou 310027,China;Zhejiang Junbo Auto Parts Co.,Ltd.,Lishui 323000,China)

机构地区：[1]浙江大学动力机械及车辆工程研究所,浙江杭州310027 [2]浙江俊博汽车部件有限公司,浙江丽水323000

出　　处：《机电工程》2023年第10期1591-1598,共8页Journal of Mechanical & Electrical Engineering

基　　金：内燃机可靠性国家重点实验室开放基金资助项目(SKLER-201807);浙江大学龙泉创新中心项目(ZDLQ 2021002)。

摘　　要：针对汽车空调系统中离合器传递扭矩和使用寿命难以满足空压机工作需求这一问题,采用试验手段对电磁离合器摩擦片材料的摩擦磨损性能进行了研究。首先,采用增摩材料对B、Y两型常见摩擦片进行了摩擦磨损试验,获取了2种材料在不同工况参数下的摩擦系数及摩擦面温度;然后,对比分析了各工况参数对于材料摩擦学性能的影响规律;最后,在扫描电镜下对磨合后的样件进行了微观形貌观测,并结合元素占比变化,分析了其主要磨损机制。研究结果表明:转速、加载力、对摩件初始粗糙度与摩擦系数、摩擦面温升均呈正比关系;2种材料的摩擦系数最终稳定在0.3~0.45范围内。其中,B型材料表面微裂纹和剥落更严重,其与10号钢材料磨合后,Fe元素含量提高了23.95%;Y型材料的摩擦热稳定性和耐磨性更好,采用Y型材料更有利于提升电磁离合器的传递扭矩和使用寿命。In order to solve the problem that the transmission torque and service life of clutch was hard to meet the working demand of the air compressor in automobile air conditioning system,the friction and wear performance of the friction plate material of electromagnetic clutch was studied through experimental ways.Firstly,tribological wear tests were performed on B/Y-type friction-enhancing materials which commonly used on the friction plate,the friction coefficient and friction surface temperature were measured under different working parameters.Secondly,the tribological properties change patterns under different influencing factors were comparatively analyzed.Lastly,the post-wear morphology of the sample after running-in test was observed with scanning electron microscopy,and the primary wear mechanisms was analyzed in conjunction with the comparison of elementary composition.The results show that the speed,the loading force,and the initial roughness of the friction parts are proportional to the friction coefficient and the temperature rise of the friction surface.In addition,the friction coefficient of the two materials finally stabilizes in the range of 0.3~0.45.Among them,the surface microcracks and peeling of B-type materials are more serious,and the Fe content increases by 23.95%after running-in with No.10 steel materials.Y-type materials have better frictional thermal stability and wear resistance,and the use of Y-type materials is more conducive to improving the transmission torque and service life of electromagnetic clutches.

关 键 词：机械摩擦与磨损 电磁离合器 传递扭矩 使用寿命 摩擦磨损试验 摩擦系数 磨损微观形貌 

分 类 号：TH117[机械工程—机械设计及理论] U463.851[机械工程—车辆工程]