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Composite magnesium plate ribbon of magnesium clad aluminum product and composition method

A technology of aluminum alloy strips and clad aluminum, which is applied in the field of aluminum clad magnesium strips, magnesium-based clad aluminum composite magnesium strips, and can solve the problems of high processing costs of magnesium and magnesium alloys, poor corrosion performance of magnesium alloys, Reduce pressure leakage and other problems, achieve the effect of reducing surface anti-corrosion coating treatment process, improving cold deformation ability, and excellent corrosion resistance

Inactive Publication Date: 2007-10-10
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1) Magnesium is a close-packed hexagonal lattice, and there is only a single slip system {0001} at room temperature. The plastic deformation of magnesium alloys at room temperature is very difficult, resulting in defects such as cracked edges, pressure leaks, and broken bands during the rolling process. Therefore, it is very difficult to cold-roll magnesium and magnesium alloy plates and strips, which is also the key technology that scientists at home and abroad are trying to overcome;
[0007] 2) The second is that the corrosion performance of magnesium alloy is very poor. The electrode potential of magnesium is -2.37V, which is a metal with strong negative electricity. Severe corrosion will occur; in order to improve the corrosion resistance of magnesium alloy, it is necessary to carry out anti-corrosion treatment on the surface of magnesium alloy, such as changing the alloy composition, optimizing the heat treatment process, anodizing, laser surface alloying, surface coating, etc., greatly increasing the The processing cost of magnesium alloys limits the application fields of magnesium and magnesium alloys
[0008] It is precisely because of the existence of the above defects that the processing cost of magnesium and magnesium alloys is dozens of times higher than that of aluminum alloys.

Method used

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  • Composite magnesium plate ribbon of magnesium clad aluminum product and composition method

Examples

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example 1

[0020] Example 1: AZ31 (American ASTM standard association grade) magnesium alloy-based aluminum clad plate coating method: AZ31 magnesium alloy is cast into a slab ingot, the size of the slab ingot is 30×150×300mm; 1060 aluminum alloy (state is not limited) is used as the package Cladding, cladding aluminum alloy specifications are 1×155×310mm, the upper and lower surfaces have the same alloy and the same specifications, the above magnesium ingot and the edge of the aluminum plate are spot welded together by ultrasonic welding, and heated in a heating furnace to 400°C- 510°C, keep warm for 1-24 hours, then go out of the furnace and then welded by hot rolling and plastic deformation. Note that the rolling speed of the first pass is 20 m / min, and the lubricating liquid cannot be sprayed during the rolling process. After the magnesium alloy and the clad aluminum plate are completely welded, they are rolled to the target thickness according to the normal hot rolling process of the...

example 2

[0021] Example 2: Roll the AZ31 magnesium alloy into a 2.5mm thick plate coil, prepare two rolls of 0.1mm thick pure aluminum foil coil with the same width as the AZ31 coil, and prepare two rolls of 0.1mm pure aluminum foil for one coil of 2.5mm thick AZ31 magnesium alloy The strip is covered in the middle and stacked into one coil, and the middle temperature stacking is welded on the double uncoiling cold rolling with a heating furnace. The temperature of the heating furnace is controlled from 100°C to 620°C. During the first rolling pass, no lubricating liquid or spraying is allowed. Cooling liquid, the rolling speed is 40 m / min, after the magnesium plate and the aluminum plate are welded together, they are rolled to the target thickness according to the general magnesium plate cold rolling process. Subsequent other processes are the same as the general magnesium alloy plate production process according to user requirements.

example 3

[0022]Example 3: MB5 (China's wrought magnesium alloy grade is equivalent to the American ASTM standard association AZ61A grade) base magnesium alloy clad aluminum plate coating method: MB5 is cast into an ingot, and the size of the ingot is 340×1260×2400mm; 1060 aluminum alloy ( The state is not limited) as the cladding, the specification of the cladding aluminum alloy is 20×1300×2450mm, the upper and lower surfaces are the same alloy and the same specification, and the edges of the above ingot and aluminum plate are spot welded together by sonic welding, or mechanically Pressure pre-welded together, heated to 400°C-510°C in a heating furnace, kept warm for 1-24 hours, and then hot-rolled and plastically deformed and welded. Note that the rolling speed of the first pass is 30 m / min, and the lubricating liquid cannot be sprayed during the rolling process. After the magnesium alloy and the clad aluminum plate are completely welded, they are rolled to the target thickness accordi...

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Abstract

An Al material clad Mg-base band is prepared from the Mg plate or Mg plate ingot as basic material and the cladding Al sheets through hot rolling or cold rolling to attach said Al sheets to both surfaces of basic material. It has high cold deformation power and anticorrosion ability.

Description

technical field [0001] The invention relates to the field of new non-ferrous metal materials, in particular to a magnesium-based clad aluminum composite magnesium plate strip, referred to as an aluminum-clad magnesium plate strip. Background technique [0002] Because magnesium alloy has the advantages of light weight, high strength, pressure resistance, good heat dissipation, vibration resistance, electromagnetic radiation absorption, more than 80% of magnesium alloy can be recycled, and less environmental pollution. In many fields, it is gradually replacing plastic materials, steel and copper and aluminum, and is widely used in automobile industry, national defense industry, computer, mobile phone, various household appliances (such as TV and air conditioner), aerospace, transportation, mechanical equipment, communication Equipment, office equipment, optical equipment, sporting goods and many other fields are sunrise industries in the 21st cen...

Claims

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Application Information

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IPC IPC(8): B32B15/01C22C23/00B21B1/38B21B47/00
Inventor 蒋显全张秀锦
Owner SOUTHWEST UNIVERSITY
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