Arc erosive characteristics of a carbon strip sliding against a copper contact wire in a high-speed electrified railway

Experimental studies on arc erosive characteristics of a carbon strip rubbing against a copper contact wire were carried out on a ring-on-block electrical sliding tester. The test result shows that the intensity of arc discharge has a significant influence on friction and wear performance. These arc...

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Bibliographic Details
Published in:Tribology international 2014-11, Vol.79, p.8-15
Main Authors: Ding, T., Chen, G.X., Li, Y.M., Yang, H.J., He, Q.D.
Format: Article
Language:English
Subjects:
Arc discharge
Arc discharges
ARC EROSION
ARCS
Carbon
Contact
Friction and wear
High speed
Oxidative wear
RAILROAD APPLICATIONS
Railroads
Railway engineering
Strip
Wear
WEAR MECHANISMS
WIRE
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Summary:Experimental studies on arc erosive characteristics of a carbon strip rubbing against a copper contact wire were carried out on a ring-on-block electrical sliding tester. The test result shows that the intensity of arc discharge has a significant influence on friction and wear performance. These arc erosive characteristics are characterized by two special traces. SEM examination shows that arc erosion and oxidative wear caused by arc discharge are the main wear mechanisms. This indicates that the off-line arc discharge of the contact couple should be suppressed to the maximum extent to extend the service life of the pantograph strip in high-speed electrified railways. •The arc erosive features are characterized by arc ablation pits and dark steam-lines.•The main wear mechanisms of strip/contact wire are arc erosion and oxidative wear.•The off-line arc discharge should be suppressed to extent the service life of strip.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2014.05.003