弹性条件下浸金属碳/不锈钢载流摩擦磨损性能  

Friction and Wear Behavior of Copper-Impregnated Metalized Carbon Strip Sliding against Stainless Steel with Electrical Current under Elastic Condition

作　　者：丁涛[1] 何宏高[1] 陈光雄[1] 朱旻昊[1] 

机构地区：[1]西南交通大学摩擦学研究所,四川成都610031

出　　处：《西南交通大学学报》2009年第4期558-563,共6页Journal of Southwest Jiaotong University

基　　金：国家973计划项目(2007CB714703);国家自然科学创新研究群体科学基金资助项目(50821063)

摘　　要：在销-盘摩擦磨损试验机上,测试了弹簧刚度、电流、滑动速度对浸金属碳/不锈钢对磨时的摩擦因数、磨损率及放电强弱的影响.试验结果表明,弹簧刚度、电流、滑动速度对摩擦副的摩擦因数有显著影响.载流时,销试样磨损率随着弹簧刚度的增加而先减小后增加;刚度一定时,磨损率随电流或滑动速度的增加而增大.与阳极相连的销试样以火花放电为主,与阴极相连的销试样以电弧放电为主,且放电的强弱与电流及滑动速度有关.Experimental tests on friction and wear behavior of copper-impregnated metalized carbon sliding against stainless steel were carried out under the conditions of different spring stiffness, current intensity and sliding velocity on a pin-on-disc tester with electric current, and the friction coefficients, wear rates, and discharge intensity were tested. The result indicated that the spring stiffness, current intensity and sliding velocity had distinct influences on the friction coefficient of the friction pair. As the spring stiffness increased, the wear rate of the copper-impregnated metalized carbon strip firstly decreased and then increased under electric current. When the spring stiffness was fixed, the wear rate increased with the increase of the sliding velocity or electric current intensity. Two discharge phenomena were observed in experiments. Spark discharge was dominant for the pin connected with power anode, while arc discharge mainly occurred to the pin connected with power cathode. The intensity of discharge was found to closely relate to the current intensity and sliding velocity.

关 键 词：弹簧刚度 摩擦磨损 火花放电 电弧放电 

分 类 号：TH117.3[机械工程—机械设计及理论]