A kind of aluminum clad aluminum alloy wire and preparation method thereof

Abstract

The invention discloses an aluminum-coated aluminum alloy wire and a fabrication method thereof, and belongs to the technical field of a bimetal composite wire. A casting industrial pure aluminum cylinder and a casting aluminum alloy cylinder are in interference assembly to fabricate aluminum-coated aluminum alloy ingot, and the aluminum-coated aluminum alloy wire is fabricated according to the steps of forging, rolling and cold drawing. With an aluminum-coated aluminum alloy wire interface fabricated by the method, atomic-level metallurgical bonding can be achieved, so that the problem of poor bonding performance of a bimetal composite wire interface is prevented; and in design, the aluminum-coated aluminum alloy wire employs a skin effect principle, the high conductivity characteristic of pure aluminum and the high strength characteristic of aluminum alloy are combined to achieve high strength and high conductivity, and the wire is mainly used for a long-distance and high-voltage ACpower distribution line.

Description

technical field [0001] The invention relates to the technical field of bimetal composite wires, in particular to an aluminum-clad aluminum alloy wire and a preparation method thereof. Background technique [0002] Electricity is the energy basis for industrial development. Therefore, the demand for electricity is increasing day by day along with the development of industry. Due to the relatively remote location of several major power plants in our country, this has led to unavoidable long-distance power transmission, and also caused inestimable power loss. Therefore, energy-efficient conductor materials have received extensive attention in recent decades. Industrial pure aluminum and aluminum-magnesium-silicon alloys have good electrical conductivity and high specific strength, and are widely used as energy-saving conductive materials. For example, steel-cored aluminum strands, aluminum alloy cored aluminum strands and all-aluminum alloy strands are widely used in overhea...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in the prior art that the strength and electrical conductivity of the bimetallic composite wire are mutually restricted, and that intermetallic compounds will be precipitated at the interface of the bimetallic composite wire during the preparation process to affect the performance of the interface, the purpose of the present invention is to provide an aluminum Aluminum alloy clad wire and its preparation method, using high pressure interference assembly method to prepare aluminum clad aluminum alloy billet, and further prepare aluminum clad aluminum alloy wire with good metallurgical bonding interface, and at the same time, the composite wire is combined with the outer layer of pure aluminum High conductivity and high-strength properties of the core aluminum alloy, breaking the constraint relationship between the strength and conductivity of aluminum wires

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