Production technique of high-strength high-conductivity copper alloy contact network line

Abstract

The invention discloses a production technique of a high-strength high-conductivity copper alloy contact network line, which comprises the following steps: introducing upwards to obtain an oxygen-free copper alloy rod, carrying out cold-rolling to a proper size, and carrying out heat treatment to obtain the high-strength high-conductivity copper alloy contact network line. The production technique solves the everlasting contradiction between high strength and high conductivity in the copper alloy contact network line, and satisfies the performance requirements for contact network lines in railway industry. After heat treatment, the high-strength high-conductivity copper alloy contact network line is subjected to secondary cold rolling and drawn to the preset diameter to obtain the contact network line product applied to railways. The production technique has the advantages of simple process and higher production efficiency.

Description

technical field [0001] The invention relates to a series of catenary wire products used in electrified railways, in particular to a production process for high-strength and high-conductivity copper alloy catenary wires. [0002] Background technique [0003] Due to the high thermal efficiency, high power and fast speed of electric traction, simple operation and maintenance, reliable operation, the use of secondary energy, no pollution, and zero emissions, electrified railways are the development direction of railway construction. Catenary wire products used in electrified railways, such as catenary wires and catenary cables, are important products needed for railway development. At present, the traditional processes for processing the above-mentioned catenary wires at home and abroad mainly include the following types: [0004] 1. Up-drawing method: direct cold-drawing of the upper-leading rod billet to make catenary wire. The Oxygen content of catenary wires prod...

AI Technical Summary

Problems solved by technology

The catenary wire made of such billet has oxygen-free copper grade, pure quality, and the plasticity and toughness of the product have been correspondingly strengthened, but a large amount of "splash" will be generated during the extrusion process. Invisibly increased processing costs

In addition, defects such as "cold insulation" and "metal inclusions" are prone to occur during the extrusion process, which brings great hidden dangers to the safety of train operation.

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