滑动电接触磨损过程变化的实验研究  

Experimental Research on Wear Process Variability of the Sliding Electric Contact

作　　者：郭凤仪[1] 任志玲[1] 马同立[1] 赵汝彬[1] 陈忠华[1] 王智勇[1] 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125105

出　　处：《电工技术学报》2010年第10期24-29,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(50677027);教育部留学回国人员科研启动基金(教外司留[2005]383);教育部博士学科点专项科研基金(20060147003)资助项目

摘　　要：以浸铜碳滑板、铜锡导线为摩擦副进行对磨实验,得出摩擦系数湍流状波动曲线,从而提出了滑板受流磨损过程的两个阶段:跑合期、相对稳定期。针对滑板在跑合期磨耗量大的问题,论文通过实验得出了适当增大接触压力、提高滑动速度可以缩短跑合期总时间,以减少磨损过程中总的磨耗量,同时提高受流质量。利用SSX?550扫描电子显微镜对跑合期、相对稳定期的滑板形貌进行分析,得出在跑合期受流磨损的主要形式为宏观电弧侵蚀与磨粒磨损;而相对稳定期以微观电弧烧蚀和粘着磨损为主。In this paper,a lot of experiments are carried out by using the high-performance sliding electric contact testing instrument,regarding the Cu impregnation carbon material and Cu-Sn wire as a friction pairs.A group of friction coefficient curves as turbulence are obtained,thereby two stages in the current-carrying friction process of sliding plates are proposed;they are running-in stage and relative stable stage.In connection with the problem of plate＇s heavy abrasion loss at the running-in stage,some conclusions are derived,if increase the pressure properly and elevate the sliding velocity,it will shorten the total time of the running-in time,so as to reduce the wear of the first stage and improve the current quality.At last the author analyzed the worn surface of Cu impregnation carbon material at the first period and the relative stable period by using the SSX-550.And found that the macroscopic arc corrosion and the abrasive wear are the main styles of friction and wear at first stage,the microcosmic arc corrosion and the adhesive wear are the main styles at the relative stable period.

关 键 词：电接触 磨损 跑合期 相对稳定期 磨耗率 宏观电弧 微观电弧 

分 类 号：TM244[一般工业技术—材料科学与工程]