Preparation process of high-strength and high-conductivity copper alloy and prepared copper alloy

Abstract

The invention relates to the field of copper alloys, and particularly discloses a preparation process of a high-strength and high-conductivity copper alloy and the prepared copper alloy, and the preparation process of the copper alloy comprises the following steps: step 1, melting raw material copper, adding composite metal powder, and carrying out heat preservation for 1-2 hours under composite gas purging to prepare a semi-finished product copper alloy; 2, the semi-finished copper alloy is subjected to jet milling, a complexing agent is added for uniform mixing, then compression molding is conducted, vacuum sintering is conducted, and a sintered blank is obtained; 3, crushing and grinding the sintered blank, adding rare earth metal, uniformly stirring and mixing to obtain a mixed material, carrying out compression molding on the mixed material again, and carrying out a vacuum refining process to obtain a refined pressed blank; fourthly, the refined pressed blank is subjected to carburizing treatment and then subjected to secondary sintering, and the formed copper alloy is obtained; and fifthly, the formed copper alloy is subjected to annealing treatment, and a copper alloy product is obtained. The copper alloy prepared through the preparation technology is high in strength, good in corrosion resistance and excellent in conductivity.

Description

technical field [0001] The present application relates to the field of copper alloys, and more particularly, to a preparation process of a high-strength and high-conductivity copper alloy and the prepared copper alloy. Background technique [0002] Copper alloys generally refer to alloys formed by adding one or several other elements to pure copper as the matrix. Copper alloys are widely used in life, involving power transmission, communication cables, electrical circuits, printed circuits, ships, automobiles and other industries. [0003] At present, in the process of power transmission, cable joints are used in large quantities. After the cables are laid, in order to make them a continuous line, each segment of the line must be connected as a whole, and these connection points are called cable joints; The copper shell for cable joint is a kind of joint for high-voltage cable connection. If a common copper alloy is used to cast the copper shell for high-voltage cable joint...

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Problems solved by technology

[0003] At present, in the process of power transmission, a large number of cable joints are used. After the cable is laid, in order to make it a continuous line, each section of the line must be connected as a whole. These connection points are called cable joints; and high-voltage The copper shell for cable joints is a joint used for high-voltage cable connections. If the copper shell for high-voltage cable joints cast by a general copper alloy is used, the inventor finds that it cannot meet the high strength and high conductivity required for high-voltage cable joints at the same time. At the same time, because the high-voltage cable joint needs to be exposed for a long time, the surface will be corroded and oxidized after a period of use, and the service life is obviously short. Therefore, a high-strength and high-conductivity copper alloy is developed, which has good corrosion resistance and is applied in High voltage cable joints are very necessary

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