A kind of preparation method of aluminum-clad magnesium composite rod and wire

A composite rod and aluminum-coated magnesium technology, which is applied in the field of composite metal processing, can solve the problems that aluminum-coated magnesium double-gold composite materials cannot be used, the product field is too narrow, and energy consumption is high, so as to eliminate adverse effects, avoid excessive fusion and Effect of diffusion reaction and process simplification
CN109047368BActive Publication Date: 2021-03-23HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2021-03-23

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Abstract

The invention provides a preparation method of an aluminum-coated magnesium composite rod wire rod. The preparation method comprises the following steps that the surface of a magnesium alloy core material is cleaned, and then is placed in the central position of a crystallizer and is fixedly connected with a traction device; after an aluminum alloy is heated and melted, the aluminum alloy is poured into a casting inner cavity of the crystallizer, aluminum alloy liquid is in contact with the magnesium alloy core material, the aluminum alloy layer is formed by cooling and solidifying the surfaceof the core material, and meanwhile, the traction device is started, and the composite blank is pulled out from the lower part of the crystallizer, so that continuous coating can be realized; the size ratio of the inner diameter of the casting inner cavity of the crystallizer to the inner diameter of the magnesium alloy core material is 1.5-2.3:1; and after the aluminum-coated magnesium compositeblank is heated, continuous multi-pass rolling is carried out, and the aluminum-clad magnesium composite bar materials with different section sizes and section shapes are prepared by adjusting the rolling pass and the shape of rolling holes. The material has good tissue performance, and is low in cost, high in efficiency and wide in applicability.
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Description

technical field

[0001] The invention belongs to the technical field of composite metal processing, and in particular relates to a preparation method of an aluminum-clad magnesium composite rod and wire. Background technique

[0002] Magnesium alloy is currently the metal structure material with the lowest density in the industry, and has high specific strength, good shock absorption and electromagnetic shielding, but poor plasticity and corrosion resistance; aluminum alloy has good plasticity and corrosion resistance, but The density is higher than that of magnesium alloy. Aluminum-clad magnesium bimetal rods and wires can combine the advantages of the two materials, and have broad market and application prospects in communications, electronics, transportation and other industries.

[0003] The key to preparing bimetallic composite rods and wires is to obtain interfaces with good bonding properties. The metallurgical bonding interface is to tightly bond two metal materials...

Claims

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