Preparation method of high-strength high-conductivity copper alloy wire

Abstract

A high-strength high-conductivity copper alloy wire comprises, by mass, 0.1%-40% of Ag, 0.0001%-0.05% of Au and the balance copper and inevitable impurities. A preparation method of the high-strengthhigh-conductivity copper alloy wire comprises the steps of preparing copper alloy, wherein copper, silver and gold are placed in a vacuum melting furnace, the three metals are molten in a vacuum environment, the temperature is then kept, and then vacuum cooling is conducted; preparing a copper alloy rod, wherein the prepared alloy is placed in a vacuum continuous casting furnace for vacuum continuous casting, and the alloy is continuously cast into the copper alloy rod; conducting wire drawing, wherein unidirectional wire drawing is conducted on the prepared copper alloy rod. The high-strengthhigh-conductivity copper alloy wire has the beneficial effects that the preparation technology is easy to operate, practicable, low in production cost and suitable for production of medium and smallbatches of high-strength high-conductivity copper alloy wires; the high-strength high-conductivity copper alloy wire greatly improves the tensile strength, guarantees a high conductivity, has quite good extensibility and can be quite easily drawn to be thin, and the high-strength high-conductivity copper alloy wire can be drawn to be a 0.03mm ultrathin wire and has quite good buckling resistance and temperature resistance.

Description

technical field [0001] The invention relates to a preparation method of a high-strength and high-conductivity copper alloy wire, belonging to the field of copper alloy manufacturing. Background technique [0002] The most notable feature of copper is its high electrical conductivity, which is an ideal conductive material. However, due to its low strength, hardness and softening temperature, its comprehensive properties can no longer meet the special requirements of science and technology for materials. With the development of science and technology and modern industry, in the leads of large-scale integrated circuits, the rotor wires of large high-speed turbine generators, the overhead wires of large electric locomotives, medical wires, vibration device wires, electronic fine wires and aerospace vehicle components, etc. Both require conductor materials to have higher strength and good plasticity while maintaining their excellent electrical conductivity. Therefore, people are...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a method for preparing a high-strength and high-conductivity copper alloy wire. In addition to the advantages of high temperature, it also solves the problem of the trade-off between conductivity and strength.

Under the same tensile strength, the electrical conductivity of this alloy is higher than that of silver-copper alloy, which solves the problem that the existing strength and electrical conductivity are difficult to balance