Copper-aluminum composite contact wire

Abstract

The invention relates to a copper-aluminum composite contact wire for electrified railway and bus contact wire. Its special feature is that copper or copper alloy and aluminum or aluminum alloy bimetal are compounded into an integral wire through plastic deformation, so that the part in contact with the aluminum clip is aluminum or aluminum alloy, and the part in contact with the locomotive pantograph is copper. alloy. The comprehensive electrical conductivity of the copper-aluminum composite contact wire is 65%IACS~105%IACS; the hardness of its working part (that is, the copper or copper alloy slidingly rubbed against the pantograph) is HB90~200; the copper-aluminum composite contact wire produced by the technology of the present invention The copper-aluminum bonding force of the composite contact wire is 400-550N / cm.

Description

technical field

[0001] The invention relates to a copper-aluminum composite contact wire for electrified railway and bus contact wire. Background technique

[0002] The contact wire is a wire that transmits current for the electric locomotive pantograph. At present, the contact wires used in electrified railways and public transport systems in China are mostly copper or copper alloy contact wires. Since the electrical wiring clips mostly use aluminum or aluminum alloy clips, it is easy to form copper as the cathode and aluminum as the anode in practical applications. , Rainwater, condensation, etc. are electrochemical corrosion of electrolytes, which seriously affect the life of aluminum clamps, and shorten the repair cycle of electrified railways, which is not conducive to the normal operation of electrified railways and buses. Contents of the invention

[0003] In order to overcome the deficiencies of the prior art, the invention provides a copper-aluminum composite con...