Wear mechanism of copper alloy wire sliding against iron-base strip under electric current

被引：181

作者：

Nagasawa, H

Kato, K

机构：

[1] Railway Tech Res Inst, Kokubunji, Tokyo 185, Japan

[2] Tohoku Univ, Sch Mech Engn, Lab Tribol, Sendai, Miyagi 98077, Japan

来源：

WEAR | 1998年 / 216卷 / 02期

关键词：

wear; copper alloy; sintered alloy; trolley wire; contact strip; electric railways;

D O I：

10.1016/S0043-1648(97)00162-2

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In electric railways, the wear rate of trolley wire decides the life of the wire. In order to search for methods of decreasing the wear rate, laboratory wear test was carried out with three types of wire materials sliding against an iron-base sintered alloy strip under electric current how condition. The test results indicate that the wear rate of wire is related to heat generated at contact surfaces. The heat is generated by friction force, by electric contact resistance, and by are when contact loss occurs between wire and strip. Wear rate of trolley wire is expressed with two parameters as a wear map. Three types of wear particle shapes are recognized and they are shown in three regions in the map. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：179 / 183

页数：5