Processing Technology of High Strength and High Conductivity Pure Copper Wire

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.

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 ...

AI Technical Summary

Problems solved by technology

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 strength are still low, which cannot meet the use of some special occasions.

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