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 flow 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 arc 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 the three regions of the map.
Wear mechanism of copper alloy wire sliding against iron-base strip under electrical current
1998
5 Seiten, 8 Bilder, 5 Tabellen, 7 Quellen
Aufsatz (Zeitschrift)
Englisch
British Library Online Contents | 1998
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