Machining process of high-strength and high-conductivity pure copper wire

A processing technology and high-conductivity technology, used in crucible furnaces, electric furnaces, rotary drum furnaces, etc., can solve the problems of difficult-to-structure materials to meet various application requirements, low electrical conductivity and tensile strength, and loose pure copper structure. Uniform pure copper strength and elongation properties, improved electrical conductivity, low oxygen content

CN110038918AActive Publication Date: 2019-07-23JIANGXI KAIAN INTELLIGENT LTD BY SHARE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-07-23

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Abstract

The invention relates to the field of material forming and machining, in particular to a machining process of a high-strength and high-conductivity pure copper wire. The machining process includes thefollowing steps that electrolytic copper is used as the raw material and is molten in a smelting device after being dried, the smelting temperature is 900 DEG C to 1200 DEG C, the surface of liquid copper is covered with charcoal and graphite flakes so that the vacuum state during melting can be ensured, online degassing, deoxidizing and stirring are conducted, and by means of the online degassing, deoxidizing and stirring process, the aims of degassing and deoxidizing are achieved; up-drawing continuous casting is adopted for the liquid copper, a copper rod is produced from a copper blank through a continuous extruding machine; recrystallization annealing is conducted on the copper rod material subjected to continuous extruding, continuous rolling continues to be conducted, and the copper rod material is rolled into a wire blank through a continuous rolling unit; and second-time recrystallization annealing is conducted on the wire blank subjected to continuous rolling, and the copperwire is obtained through a drawing unit. According to the machining process, metal is subjected to multiple times of recrystallization annealing, and the structure is compact. The pure copper produced through the machining process is low in oxygen content and good in electric conduction performance. Crystallization of a whole casting blank is uniform, and the strength and extending performance ofthe pure copper are improved.
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Description

technical field

[0001] The invention relates to the field of material forming and processing, in particular to a processing technology of high-strength and high-conductivity pure copper wire. Background technique

[0002] Pure copper has high electrical and thermal conductivity, high plastic deformation ability, and good corrosion resistance. It is widely used in industry as a good conductor. However, despite the advantages of high electrical conductivity, pure copper has extremely low tensile strength and is easily work-hardened due to its extremely low static recrystallization temperature, which inhibits further plastic deformation. Therefore, pure copper materials are mostly used in wires, conductors and coolers, etc., and it is difficult to meet various application requirements as a structural material. The pure copper produced by the traditional method and the pure copper produced by powder metallurgy have a loose structure, and the electrical conductivity and tensile ...

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] like figure 1 Shown, the processing technique of high-strength high-conductivity pure copper wire of the present invention comprises the following steps:

[0026] (1) Electrolytic copper is used as raw material, and it is melted in a smelting device after drying. The melting temperature is 900°C-1200°C. Charcoal and graphite flakes are used to cover the surface of the copper liquid to ensure the vacuum state during melting, and the online degassing, Deoxygenation, stirring, the online degassing, deoxidation, stirring process refers to filling the copper liquid with 99.999% argon or nitrogen through the online degassing device, and through the controlled rotating graphite shaft and rotor, the metering The argon or nitrogen gas is pressed into the copper liquid and broken up into tiny bubbles, so that it can be evenly dispersed in the copper liquid, so as to ac...