Abstract Field investigations have demonstrated that the wear life of a carbon slider of a pantograph in a high-speed train of the 250 km/h speed class is very short. In this study, several experimental tests were performed on a high-speed test machine to understand the mechanisms of the serious wear of the slider against the wire under electric current. The experiments on the high-speed railway were carried out at electric currents of 200, 300, 400, and 500 A, sliding speeds of 100, 150, 200, and 250 km/h, and normal loads of 60, 80, 100, and 120 N. The friction coefficient, wear volume, arc electric current, arc electric voltage drop, and temperature increase of the carbon slider were recorded and analyzed. The experimental results demonstrated that the wear volume of the slider increased with the electric current and that arc melting and thermally enhanced wear were the dominant mechanisms causing the serious wear of the slider.

中文翻译：

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高密度电流对碳滑块对铜银线磨损的影响

摘要 现场调查表明，250km/h速度等级的高速列车受电弓碳滑块的磨损寿命很短。在这项研究中，在高速试验机上进行了多次实验测试，以了解电流下滑块对导线严重磨损的机制。高速铁路试验分别在电流200、300、400、500 A，滑动速度100、150、200、250 km/h，正常载荷60、80、100、和120 N。记录和分析碳滑块的摩擦系数、磨损量、电弧电流、电弧电压降和温升。