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A kind of production process of high-strength copper alloy contact wire

A production process and contact wire technology, applied in the field of high-strength copper alloy production process, can solve the problems that the tensile strength cannot be further improved, high-speed railway construction technology is stagnant, etc., and achieve the effect of short production process

Active Publication Date: 2018-05-08
佛山市祥盈盛金属实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the copper alloy contact wires used in domestic high-speed railway catenary are mainly copper-magnesium alloy contact wires and copper-tin alloy contact wires. The tensile strength of contact wires used in domestic high-speed railways with a speed of 350 kilometers per hour and above is required to be 500Mpa. The above, but with the increase of the speed of high-speed railway, if the tensile strength can not be further improved, it will cause a stagnation of high-speed railway construction technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment 1 is used for the production technology of high-strength copper alloy contact wire, comprises the following steps:

[0032] (1) Upward continuous casting copper rod: with A-level cathode copper, pure magnesium, copper-selenium master alloy, copper-cobalt master alloy, copper-nickel master alloy, pure silicon, copper-yttrium master alloy, copper-scandium master alloy as raw materials, in Melting and upward continuous casting in the smelting device. The melting device is covered with charcoal and graphite flakes, and the copper rod is continuously cast by the traction unit;

[0033] The temperature of the melting furnace in the smelting device is 1200°C, and the temperature of the holding furnace is 1180°C; the particle size of the charcoal is 60mm, and the covering thickness is 150mm; the covering thickness of the graphite flakes is 50mm; the outlet temperature of the cooling circulating water is 30°C; the diameter of the upper lead copper rod is 30mm , t...

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Abstract

The invention relates to a production technology of high-strength copper-alloy contact wires. The production technology comprises the following steps: (1) preparing an up-casting copper rod by continuous casting of A-grade cathode copper in a melting device; (2) preparing a contact wire blank material by continuous extrusion of the up-casting copper rod in a continuous extruder; and (3) preparing the contact wire finished product by a drawbench unit. Tensile strength of the prepared contact wire is greater than 600 Mpa. The contact wire meets use requirements of contact wires for high speed railway.

Description

technical field [0001] The invention relates to a production process of a copper alloy, in particular to a production process of a high-strength copper alloy used for high-speed railway contact wires. Background technique [0002] The function of the contact wire for electrified railway is to transmit current to the electric locomotive through direct contact with the sliding friction of the pantograph slide plate of the electric locomotive. Under severe conditions such as wear and tear, it is required that the contact wire material should have high tensile strength and electrical conductivity, as well as high resistance to high temperature softening. With the rapid development of railway electrification, the speed of railway transportation has been increased again and again, and the performance requirements for contact wires for electrified railways are getting higher and higher. However, the strength and conductivity of conductor alloys generally have an inverse function r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/04C22C9/00C22C1/03C22F1/08
CPCB21C37/045B21C37/047C22C1/03C22C9/00C22F1/08
Inventor 徐高磊
Owner 佛山市祥盈盛金属实业有限公司