Aluminum-magnetism aluminum alloy for automobile body plate of automobile and manufacturing method thereof

A technology of an automobile body panel and a manufacturing method, which are applied in the field of aluminum-magnesium series aluminum alloy for automobile body panel and its manufacture, aluminum alloy and its manufacture, can solve the problem that the strength and dent resistance cannot meet the requirements of the body panel and affect the surface Quality, impact resistance and other problems, to achieve good economic benefits, improve corrosion resistance, strength and tensile properties

Active Publication Date: 2010-11-10
ZHEJIANG GKO IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But in fact, the 5xxx series aluminum alloys used for automobile body panels belong to non-heat-treatable strengthening alloys, and their strength is slightly insufficient, and their impact resistance is relatively poor. Requirements, and in the deep drawing process, a series of new steps or jagged deformation bands usually appear on the surface of the product, which seriously affects the surface quality, and softens after baking, which makes it unfavorable for use as an alloy for automobile body panels

Method used

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  • Aluminum-magnetism aluminum alloy for automobile body plate of automobile and manufacturing method thereof
  • Aluminum-magnetism aluminum alloy for automobile body plate of automobile and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The batching was carried out according to the mass percentage of Example 1 in Table 1 to make aluminum ingots, master alloys AlCu50, AlMn10, AlCr4, AlBe3, AlZr4, Al-5Ti-B and Al-rare earth.

[0045] First put the aluminum ingot into the crucible resistance furnace, when the aluminum ingot is melted and the melt temperature is 740°C, add AlCu50, AlMn10, AlCr4, AlBe3, AlZr4 intermediate alloys and stir; when the melt temperature drops to 710°C, add Mg and Zn, slagging and refining; when the temperature is 710°C, add Al-rare earth, Al-5Ti-B master alloy, stir and stand for 15 minutes, and cast in a cast iron mold at a temperature of 720°C;

[0046] Homogenize the aluminum alloy ingots formed by casting above, the temperature of the homogenization treatment is 400°C, and the treatment time is 24 hours; hot rolling at a temperature of 400°C, intermediate annealing for 40 minutes, and cold rolling twice to form a thin plate;

[0047] The thin plate prepared above is subjected...

Embodiment 2

[0049] According to the mass percentage of Example 2 in Table 1, the ingredients were prepared to make aluminum ingots, master alloys AlCu50, AlMn10, AlCr4, AlBe3, AlZr4, Al-5Ti-B and Al-rare earth.

[0050] First put the aluminum ingot into the crucible resistance furnace, when the aluminum ingot is melted and the melt temperature is 750°C, add AlCu50, AlMn10, AlCr4, AlBe3, AlZr4 intermediate alloys and stir; when the melt temperature drops to 720°C, add Mg and Zn, slag removal and refining; when the temperature is 720°C, add Al-rare earth and Al-5Ti-B master alloy, stir and stand for 12 minutes, and pour into a cast iron mold at a temperature of 720°C;

[0051] Homogenize the casted aluminum alloy ingot above, the homogenization temperature is 420°C, and the processing time is 18 hours; hot rolling at 420°C, intermediate annealing for 30 minutes, cold rolling twice to form a thin plate;

[0052] The thin plate prepared above is subjected to solution treatment, the temperatur...

Embodiment 3

[0054] The batching was carried out according to the mass percentage of Example 3 in Table 1 to make aluminum ingots, master alloys AlCu50, AlMn10, AlCr4, AlBe3, AlZr4, Al-5Ti-B and Al-rare earth.

[0055] First put the aluminum ingot into the crucible resistance furnace, when the aluminum ingot melts and the melt temperature is 760°C, add AlCu50, AlMn10, AlCr4, AlBe3, AlZr4 intermediate alloys and stir; when the melt temperature drops to 730°C, add Mg and Zn, slag removal and refining; when the temperature is 730°C, add Al-rare earth and Al-5Ti-B master alloy, stir and stand for 12 minutes, and pour into a cast iron mold at a temperature of 730°C;

[0056] Homogenize the aluminum alloy ingots formed by casting above. The temperature of the homogenization treatment is 440°C, and the treatment time is 15 hours; hot rolling at a temperature of 440°C, intermediate annealing for 25 minutes, and cold rolling twice to form a thin plate;

[0057] The thin plate prepared above is subj...

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Abstract

The invention provides an aluminum-magnetism aluminum alloy for an automobile body plate of an automobile and a manufacturing method thereof, belongs to the technical field of alloy materials and aims to solve the problem of non-ideal intensity and dent resistance of a conventional 5XXX series aluminum alloy. The aluminum-magnetism aluminum alloy for the automobile body plate of the automobile comprises the following components in percentage by weight: 0.3 to 0.8 percent of Cu, 0.2 to 0.45 percent of Mn, 3.6 to 5.6 percent of Mg, 0.05 to 0.2 percent of Cr, 0.1 to 0.5 percent of Zn, 0.005 to 0.01 percent of Be, 0.05 to 0.2 percent of Ti, 0.05 to 0.1 percent of Zr, less than or equal to 0.1 percent of Si, 0.05 to 0.3 percent of rare earth element, less than or equal to 0.35 percent of Fe and the balance of Al. The aluminum-magnetism aluminum alloy for the automobile body plate of the automobile has the advantages of high intensity, high tensile property, high plasticity and high shock resistance.

Description

technical field [0001] The invention relates to an aluminum alloy and a manufacturing method thereof, in particular to an aluminum-magnesium aluminum alloy for automobile body panels and a manufacturing method thereof, belonging to the technical field of alloy materials. Background technique [0002] The world's auto industry is facing three increasingly severe issues: energy, environmental protection, and safety. Reducing the weight of automobiles to reduce energy consumption, reduce environmental pollution, improve fuel economy of automobiles, and save limited resources have become the focus of major automobile factories. Lightweight is an important trend in the development of automobiles. By using lightweight materials to replace traditional steel materials, the weight of automobiles can be reduced to save fuel. Aluminum alloy, as the preferred material for automobile lightweight, has excellent performance unmatched by other materials. The application advantages of alum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C1/03C22F1/047
Inventor 丁荣辉黄文辉曲明洋曾凡清张超
Owner ZHEJIANG GKO IND CO LTD
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