Effect of temperature and arc discharge on friction and wear behaviours of carbon strip/copper contact wire in pantograph-catenary systems

被引：123
|
作者：
Ding, T. [1 ]
Chen, G. X. [1 ]
Bu, J. [1 ]
Zhang, W. H. [1 ]
机构：
[1] SW Jiaotong Univ, Tribol Res Inst, State Key Lab Tract Power, Chengdu 610031, Peoples R China
来源：
WEAR | 2011年 / 271卷 / 9-10期
基金：
中国国家自然科学基金;
关键词：
Friction and wear; Temperature rise; Arc discharge; Pantograph/catenary systems; Service life; ELECTRICAL SLIDING CONTACT; IMPREGNATED METALLIZED CARBON; CURRENT COLLECTORS; STAINLESS-STEEL; STRIP; SURFACE; SPEED; PREDICTION; MECHANISM; COUPLE;
D O I：
10.1016/j.wear.2010.12.031
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A series of tests on friction and wear performance of pure copper rubbing against carbon strip under electric current have been carried out on a modified pin-on-disc friction and wear tester. The results indicate that there are temperature rise and arc discharge in the electrical sliding processes. The temperature rise of contact pairs and the intensity of arc discharge increase with the increasing of electric current. However, the friction coefficient increases firstly due to the accumulation of wear debris, and then decreases with the increasing of electric current due to the accumulation of electric heat and friction heat on contact interface. The increase in wear volume of the carbon strip is mainly caused by high temperature of contact pairs and arc discharge phenomenon. The test results also show that the wear volume of pin specimen with arc discharge is much greater than that without arc discharge under the same temperature. Therefore, the thermal wear due to high temperature has a distinct influence on the service life of pantograph contact strip and arc erosion even has more significant influence. Cooling measures should be applied in pantograph/catenary systems. Especially, off-line arc discharge of the contact couple should be suppressed to the maximum extent to extend the service life of pantograph contact strip. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1629 / 1636
页数：8
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