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Copper-aluminum composite contact wire

A copper-aluminum composite, contact wire technology, applied in the direction of contacting cables, conductors, electrical components, etc., can solve problems such as unfavorable normal operation of electrified railways and buses, affecting the life of aluminum terminal clips, and shortening the repair and replacement cycle of electrified railways.

Inactive Publication Date: 2009-10-28
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the contact wires used in electrified railways and public transportation 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 the electrolyte, which seriously affects the life of the aluminum terminal clamp, and shortens the repair cycle of the electrified railway, which is not conducive to the normal operation of the electrified railway and public transport

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: The silver-copper alloy wire billet and the 6063 aluminum alloy wire billet are subjected to stretching pre-compounding process and then stretching and setting process. First, the silver-copper alloy wire billet and 6063 aluminum alloy wire billet are obtained by continuous extrusion, and then the silver-copper alloy wire billet is stretched and pre-deformed at ε=55%, and pre-compounded on a 5-ton broaching machine through a stretching die, and then On the same broaching machine, sizing and stretching compounding are carried out, and finally tension straightening is carried out.

Embodiment 2

[0014] Embodiment 2: According to the process of "copper wire billet, aluminum wire billet-continuous extrusion pre-compositing-stretching and setting" process of the present invention, silver-copper alloy wire billet and 6063 aluminum alloy wire billet are first obtained through continuous extrusion, The silver-copper alloy wire billet is stretched and pre-deformed at ε=55%, and then the two alloy wires are continuously extruded and pre-compounded on a continuous extruder, then stretched and sized, and finally tensioned and straightened.

Embodiment 3

[0015] Embodiment three: according to the "copper wire billet, aluminum wire billet-rolling pre-composite-drawing and setting" process of the present invention, first make silver-copper alloy wire billet and 6063 aluminum alloy wire billet by continuous extrusion, and then silver-copper alloy wire billet and 6063 aluminum alloy wire billet are made The copper alloy wire billet is pre-deformed by ε=55% stretching, and then the two metal wires are pre-rolled by a rolling mill, and finally stretched, sized and straightened.

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/10H01B5/00H01B13/00B21B1/00B21C1/00
Inventor 杨斌李明茂梅军
Owner JIANGXI UNIV OF SCI & TECH
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