Nickel/silver-coated copper-clad steel conductor core for special cable and manufacturing method thereof

Abstract

The invention discloses a nickel/silver-coated copper-clad steel conductor core for special cable. A wire conductor thereof is composed of a plurality of single wires with each sequentially comprising four metal layers, wherein the inner layer is a base material (1), the second layer is a copper layer (2), the outmost layer is a silver layer (4), and a nickel layer (3) is arranged between the copper layer (2) and the silver layer (4). The invention further discloses a manufacturing method of the nickel/silver-coated copper-clad steel conductor core for special cable, which comprises the steps of: using carbon-structured steel as the base material (1) for performing copper coating by means of electrolysis; implementing drawing for formation on the copper layer (2)-forming material many times and then implementing first heat treatment; bringing the material which is subjected to the first heat treatment to nickel coating by means of electrolysis in order to form the silver layer (4); implementing drawing for formation on the silver-coated material via a mold and then implementing second heat treatment, and finally, drawing and polishing the material via the mold to form single wires.

Description

technical field [0001] The invention relates to a nickel-plated silver-plated copper-clad steel conductor wire core for special cables and a manufacturing method thereof, which is mainly used in the fields of electronics, aerospace, medical equipment and the like. Background technique [0002] In modern industry and national defense construction, the requirements for high-frequency signal transmission and the use of some special cables are getting higher and higher. They must not only have good electrical conductivity, but also have high performance requirements such as corrosion resistance and high temperature resistance. Usually Both silver-plated copper wire and silver-plated copper-clad steel wire are solved by thickening the silver layer. When the thickness of the silver layer is more than 2 μm, the appearance will still appear yellowing and discoloration after 10 minutes of high temperature test at 420 ° C, and the increase of Product manufacturing costs. At present, ...

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Problems solved by technology

[0002] In modern industry and national defense construction, the requirements for high-frequency signal transmission and the use of some special cables are getting higher and higher. They must not only have good electrical conductivity, but also have high performance requirements such as corrosion resistance and high temperature resistance. Usually Both silver-plated copper wire and silver-plated copper-clad steel wire are solved by thickening the silver layer. When the thickness of the silver layer is more than 2 μm, the appearance will still appear yellowing and discoloration after 10 minutes of high temperature test at 420 ° C, and the increase of Product Manufacturing Cost

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