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Aluminum alloy sheet for lightweight car body

An aluminum alloy sheet, lightweight technology, applied in the field of aluminum alloy processing, can solve the problems of general performance, difficult to achieve high formability and high strength, etc., and achieve the effects of improving degassing quality, increasing hardness, and refining grains

Inactive Publication Date: 2018-05-29
GUILIN UNIV OF AEROSPACE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the comprehensive performance of the current 6 series aluminum alloy automotive sheet is average. Low alloying is generally used to obtain high formability by sacrificing part of the strength, or to obtain high strength by sacrificing formability, and it is difficult to achieve the formability before painting. Good match with high strength after bake hardening

Method used

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  • Aluminum alloy sheet for lightweight car body
  • Aluminum alloy sheet for lightweight car body

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The chemical composition of the aluminum alloy sheet is by mass percentage:

[0033]Mg:1.2-2.2%, Si:0.8-1.5%, Fe:0.1-0.3%, Mn:0.2-0.8%, Cu:0.2-0.5%, Zr:0.05-0.2%, Cr:0.01-0.5%, La :0.05-0.2%, Zn≤0.2%, Ti≤0.1%, individual content of other impurity elements≤0.05%, total content of other impurity elements≤0.15%, and the balance is Al.

[0034] Its preparation method is:

[0035] (1) Melting: first put the aluminum ingot into the vacuum melting furnace for smelting. After the aluminum ingot starts to melt, add instant silicon, aluminum-manganese master alloy, aluminum-chromium master alloy and aluminum-zirconium master alloy. After the aluminum ingot is completely melted, add cathode copper and For magnesium ingots, add refining agent during the smelting process, and remove slag from the aluminum melt. After analyzing the composition of the aluminum melt, it is transferred to the holding furnace. The melting temperature is 720-750°C, and the smelting time is 4-8 hours. Th...

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Abstract

The invention relates to an aluminum alloy panel for automobile body lightweight and a preparing method of the aluminum alloy panel. The aluminum alloy panel is characterized by comprising chemical components including, by mass percent, 1.2%-2.2% of Mg, 0.8%-1.5% of Si, 0.1%-0.3% of Fe, 0.2%-0.8% of Mn, 0.2%-0.5% of Cu, 0.05%-0.2% of Zr, 0.01%-0.5% of Cr, 0.05%-0.2% of La, smaller than or equal to 0.2% of Zn, smaller than or equal to 0.1% of Ti, smaller than or equal to 0.05% of each of the other impurity elements, and the balance Al, wherein the total content of the other impurity elements is smaller than or equal to 0.15%. According to the preparing method of the aluminum alloy panel for automobile body lightweight, the aluminum alloy panel is obtained through smelting, refining, casting, homogenizing, head cutting and face milling, hot rolling, intermediate annealing, cold rolling and solution treatment. The aluminum alloy panel for automobile body lightweight has high baking hardening performance and good forming performance, and the aluminum alloy panel has good comprehensive performance through reasonable optimization of the content of the elements in the alloy and the heat treatment technology.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy processing, in particular to an aluminum alloy plate for lightweight vehicle body suitable for logistics vehicle compartments. Background technique [0002] While the automobile industry is booming all over the world, it also brings two serious social problems of environmental pollution and energy shortage. This prompts the automotive industry to focus on energy and environmental protection for sustainable development, and the advanced automotive material technology dominated by automotive lightweight is an important guarantee to achieve this goal. Therefore, lightweight has become the main direction of future automotive technology development. Automobile materials are an important factor affecting the weight of automobiles, and have a considerable impact on energy saving and pollution improvement. In the immature development of new energy technology, vehicle weight reduction is undoubtedl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C21/02C22C1/03
CPCC22C1/026C22C1/03C22C21/02C22C21/08
Inventor 陈元华王国富唐学帮刘运强
Owner GUILIN UNIV OF AEROSPACE TECH
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