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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

Active Publication Date: 2021-03-23
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has the disadvantages of high energy consumption, pollution, and narrow production range. Due to the active chemical properties of aluminum, this method cannot be used for the preparation of aluminum-clad magnesium double-gold composite materials.

Method used

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

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preparation example Construction

[0043] refer to figure 1 , figure 2 and image 3 , the embodiment of the present invention provides a method for preparing an aluminum-clad magnesium composite rod and wire, which specifically includes the following steps:

[0044] S1. Using magnesium alloy 1 and aluminum alloy 2 as raw materials, degreasing and cleaning the surface of the magnesium alloy 1;

[0045] S2. Heat and melt the aluminum alloy 2 and pour it into the inner cavity of the annular split heat conduction module 3. The annular split heat conduction module 3 is assembled on the inner wall of the crystallizer 4. The liquid aluminum alloy 2 is in contact with the surface of the magnesium alloy 1 and is on the surface. solidification to form a coated aluminum alloy layer 5, and obtain an aluminum-clad magnesium composite billet;

[0046] S3, heating the aluminum-clad magnesium composite billet;

[0047] S4, subjecting the heated aluminum-clad magnesium composite billet to multi-pass pass rolling and fine-t...

Embodiment 1

[0063] In this embodiment, industrial pure magnesium (≧99.94wt.%) with a diameter of 10mm is used as the core material, and industrial pure aluminum (≧99.79wt.%) is used as the cladding layer material. The outer surface of the pure magnesium rod is polished with a steel brush and cleaned by chemical methods to remove oil and oxide layers, and then it is placed in the center of the crystallizer and fixed with the traction device.

[0064] Install the annular split graphite module (made of high-purity graphite, with a carbon content of 99.96%) on the inner wall of the crystallizer, the outer wall of the module is in close contact with the inner wall of the crystallizer, the thickness is 11mm, the height of the inner wall is 23mm, and the inner cavity size is 20mm; The pure aluminum is heated and melted in the furnace, the heating temperature is 740°C, the temperature is lowered to 700°C for 5 minutes after refining and slag removal, and then the aluminum metal liquid is poured in...

Embodiment 2

[0068] In this embodiment, industrial pure magnesium (≧99.94wt.%) with a diameter of 16 mm is used as the core material, and industrial pure aluminum (≧99.79wt.%) is used as the cladding layer material. The outer surface of the pure magnesium rod is polished with a steel brush and cleaned by chemical methods to remove oil and oxide layers, and then it is placed in the center of the crystallizer and fixed with the traction device.

[0069] The annular split graphite module is installed on the inner wall of the crystallizer, the outer wall of the module is in close contact with the inner wall of the crystallizer, the thickness is 6mm, the height of the inner wall is 42mm, and the inner cavity size is 30mm; the pure aluminum is heated and melted in a resistance heating furnace at a heating temperature of 740°C, After refining and slag removal, the temperature is lowered to 700°C, and then the aluminum metal liquid is poured into the inner cavity of the crystallizer to contact the ...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/04
CPCB21C37/042
Inventor 刘宁陈路梁春永殷福星
Owner HEBEI UNIV OF TECH
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