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Rolling method of magnesium alloy packaged by aluminum plate

A magnesium alloy and aluminum plate technology, applied in the direction of metal rolling, etc., can solve the problems of temperature drop, base surface texture weakening, and poor surface quality, so as to prevent temperature drop, base surface texture weakening, and reduce edge cracking Effect

Active Publication Date: 2013-02-06
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention overcomes the disadvantages of the temperature drop of the magnesium alloy during the rolling process, which weakens the basal surface texture of the magnesium alloy, and at the same time causes poor surface quality due to the temperature drop.

Method used

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  • Rolling method of magnesium alloy packaged by aluminum plate
  • Rolling method of magnesium alloy packaged by aluminum plate
  • Rolling method of magnesium alloy packaged by aluminum plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment relates to a rolling method of a magnesium alloy covered by an aluminum plate, comprising the following steps: taking an aluminum panel 1, a magnesium alloy 2, and an aluminum bottom plate 4 provided with a groove 3 matching the shape of the magnesium alloy 2;

[0039] The grade of the aluminum plate is 6063 series aluminum alloy; the composition and mass fraction of the 6063 series aluminum alloy are: Si0.20~0.6%, Cu≤0.10%, Mg0.45~0.9%, Zn≤0.10%, Mn≤ 0.10%, Ti≤0.10%, Cr≤0.10%, Fe≤0.350%, and the balance is aluminum.

[0040] Place the magnesium alloy 2 in the groove 3, take the aluminum panel 1 to cover the surface of the magnesium alloy 2; the size of the magnesium alloy 2 is: 150×70×10mm (length×width×thick); the magnesium alloy The brand ZE20, the composition and mass fraction of the ZE20 magnesium alloy are: Zn2.0%, Ce0.5%, and the balance is Mg;

[0041] The aluminum base plate 4 and the aluminum face plate 1 are welded by a welding process, and g...

Embodiment 2

[0046] The implementation method of this embodiment is the same as that of the embodiment, except that the grade of the magnesium alloy is AZ31; the components and mass fractions of the AZ31 magnesium alloy are: Al 3-3.2%, Zn 0.8%, Mn 0.4 %, the balance is Mg; the aluminum plate is pure aluminum; the size of the magnesium alloy is: 150×70×10mm (length×width×thick);

[0047] Implementation effect: AZ31 magnesium alloy plate is rolled with aluminum plate at 300℃, and the size of the plate after processing is 250×90×20mm (length×width×thickness).

[0048] The preheating temperature of the magnesium alloy sheet is 350°C, and the time is 30min; the roll is heated to 200°C and kept warm; the rolling speed is 10mm / s, and the two-step continuous rolling process is adopted, that is, two continuous rolling passes and then put into the furnace For intermediate annealing, the deformation amount per pass is 15%, the intermediate annealing time is 10min, and the final rolling plate thickness ...

Embodiment 3

[0051] The implementation method of this example is the same as Example 1, the difference is that the grade of the magnesium alloy is GWK, and the components and mass fractions of the GWK series magnesium alloy are: Gd 6-10%, Y 1-3% , the balance being Mg.

[0052] The size of the magnesium alloy is 150×70×10mm (length×width×thick);

[0053] The total size of the alloy plate after the aluminum plate is wrapped is 250×90×20mm (length×width×thick);

[0054] Implementation effect: Rolling at 400°C. Before rolling, the preheating temperature of the alloy plate is 400°C, and the preheating time is 50 minutes. During the rolling process, the temperature of the roll is raised to 200°C and kept warm. The rolling speed 10mm / s;

[0055] Two-step continuous rolling process is adopted, that is, continuous rolling for two passes and then annealing in the furnace. The deformation of each pass is 20%, and the intermediate annealing time is 10 minutes;

[0056] After rolling, observe the s...

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Abstract

The invention relates to a rolling method of magnesium alloy packaged by an aluminum plate. The rolling method is designed by aiming at the defects of severe temperature drop and bad formability of magnesium alloy plates in the conventional rolling process. Pretreatment to the magnesium alloy plates after rolling comprises the following steps: step 1, setting an aluminum bottom plate to be a groove with a proper shape; step 2, placing the magnesium alloy in the groove and taking an aluminum face plate for covering the surface of the magnesium alloy; and step 3, welding the aluminum bottom plate with the aluminum face plate by adopting the welding process and setting a bevel. With the adoption of the rolling method, temperature drop of the magnesium alloy plate in the rolling process can be prevented, base face texture of the plates is obviously weakened, edge crack of the magnesium alloy caused by low temperature in the rolling process is reduced simultaneously, the deformability is improved, the time is saved, and the work efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of plate processing, and in particular relates to a rolling method of a magnesium alloy sheathed by an aluminum plate. Background technique [0002] With the development of manufacturing industries such as modern automobiles and aerospace, magnesium alloys have attracted more and more attention due to their excellent properties. Among practical materials, magnesium alloy has the lowest density (about 1.74g / cm 3 ), high specific strength and specific stiffness, and good damping, good machinability, good electrical and thermal conductivity, the application in automobiles and spacecraft can effectively reduce the overall quality of the product, and has great development potential. [0003] Commonly used magnesium alloy production techniques include die-casting, rolling, extrusion, forging, and sheet metal stamping. However, since the magnesium alloy has a close-packed hexagonal structure, there are only 3 mov...

Claims

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Application Information

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IPC IPC(8): B21B1/38C22F1/06
Inventor 靳丽吴婷董杰章桢彦
Owner SHANGHAI JIAO TONG UNIV
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