文章摘要
黄海,武云龙,闫硕,陈光雄,高国强,吴广宁.电压对碳滑板磨损性能和温升的影响[J].润滑与密封,2017,42(8):25-30
电压对碳滑板磨损性能和温升的影响
Effect of Voltage on Wear Behavior and Temperature Rise of a Pantograph Carbon Strip
  
DOI:10.3969/j.issn.0254-0150.2017.08.005
中文关键词: 电压  磨损  温升  碳滑板
英文关键词: voltage  wear  temperature rise  carbon strip
基金项目:国家自然科学基金项目(U1234202).
作者单位E-mail
黄海 西南交通大学牵引动力国家重点实验室摩擦学研究所 locohh@163.com 
武云龙   
闫硕   
陈光雄   
高国强   
吴广宁   
摘要点击次数: 50
全文下载次数: 
中文摘要:
      在受电弓/接触网高速载流摩擦磨损试验机上试验研究恒定电流及不同电压下,纯碳滑板与铜银合金接触线载流滑动摩擦时,接触压力和相对滑动速度对纯碳滑板磨损性能和温升的影响。试验结果表明:随着试验电压的增加,弓网间的电弧放电现象更加明显,燃弧时间更长,磨损率先急剧增大后趋于平缓,纯碳滑板的磨损率与温度表现出正强相关性。分析纯碳滑板磨损后的形貌可知:随着试验电压的增加,纯碳滑板的磨损先以机械磨损为主,然后转变为以电弧烧蚀和氧化磨损为主;纯碳滑板表面的电弧烧蚀坑增多且分布较均匀,烧蚀区面积增大。
英文摘要:
      A series of experimental tests were carried out to investigate the wear behavior and temperature rise of a pure carbon strip rubbing against a Cu Ag alloy contact wire on a high speed electric sliding test machine of the pantograph catenary system under constant electric current and different voltage parameters.The experimental results show that with the increasing of the experimental voltage,arc discharge phenomenon between pantograph and catenary is more obvious,its time of duration becomes longer,and the wear rate is increased sharply first and then keeps stable gradually.The wear rate of the pure carbon strip is correlated with the surface temperature of the pure carbon strip.A SEM observation of the worn surface of pure carbon strip indicates that,with the increasing of the experimental voltage,the wear mechanism of the carbon strip is changed from a mechanical wear to arc erosion and oxidative wear,the arc ablation pit on the surface is increased and distributed uniformly on the whole scar,and the ablation area becomes larger.
查看全文   查看/发表评论  下载PDF阅读器
关闭

分享按钮