Aluminum alloy composite sheet having long service life

A technology of composite sheet and aluminum alloy, which is applied in the field of aluminum alloy and long-life aluminum alloy composite sheet, can solve the problems of loss of heat dissipation effect of heat sink and reduced service life, and achieve significant economic and social effects, improved corrosion resistance, The effect of excellent corrosion resistance

Inactive Publication Date: 2009-04-22
苏州有色金属研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the Zn content is too high, the corrosion rate of the heat sink is too fast, which will cause the heat sink to lose its heat dissipation effect and reduce its service life

Method used

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  • Aluminum alloy composite sheet having long service life
  • Aluminum alloy composite sheet having long service life
  • Aluminum alloy composite sheet having long service life

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] According to the present invention, one group of alloy components is selected for testing, and the chemical composition of the selected alloy is shown in Table 1.

[0021] Table 1

[0022]

[0023] Manufacture and obtain double-sided coated aluminum alloy composite sheet, the structural characteristics of the composite sheet after annealing are as follows: figure 1 . According to GB 10124-88, the corrosion resistance test is carried out, and the comparison results with similar alloy products on the market are used to evaluate the corrosion resistance of the alloy. The comparison results are shown in figure 2 shown.

Embodiment 2

[0025] The composition of the alloy in this embodiment is the same as in Table 1.

[0026] The aluminum alloy composite sheet coated on one side is manufactured, and its structure characteristics after annealing are similar to the aluminum alloy composite sheet coated on both sides. Evaluate the advantages and disadvantages of its corrosion resistance by the method of Example 1, and the obtained comparison results are shown in figure 2 .

[0027] In summary, the present invention improves the corrosion resistance of the alloy on the basis of maintaining good mechanical properties, sag resistance and brazing properties of the alloy through the optimization of alloy elements. Through the control of the organization, the corrosion resistance is improved by using the characteristics of elongated grains, and its corrosion resistance is better than that of similar products in the existing market. The aluminum alloy composite thin plate not only has an excellent service life, but ...

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Abstract

The invention provides a long-life aluminum alloy composite thin plate, which at least comprises a core layer and a surface layer, wherein the core layer comprises Al-Mn alloy, and one side or two sides of the core layer are coated with the Al-Si alloy; the Al-Mn alloy of the core layer comprises the components by the following mass percentages: 0.05 to 0.5 weight percent of Si, 0.05 to 0.5 weight percent of Fe, 0.05 to 0.3 weight percent of Cu, 1.0 to 1.6 weight percent of Mn, 0.3 to 0.7 weight percent of Mg, 0.05 to 0.3 weight percent of Zn, and 0.05 to 0.15 weight percent of Cr, and the balance components being Al and inevitable impurities. Through selecting alloy elements preferably and controlling the texture, the prepared aluminum alloy composite thin plate has excellent corrosion resistance on the basis of keeping the alloy to have good mechanical performance, anti-sagging performance and brazing performance, thus the aluminum alloy composite thin plate is very advantageous to production and manufacturing and is a perfect material for producing heat exchanger parts.

Description

technical field [0001] The invention relates to an aluminum alloy, in particular to a long-life aluminum alloy composite thin plate, which belongs to the technical field of nonferrous metals. Background technique [0002] Automobile heat exchangers are subjected to very harsh road environment influences, repeated heat cycles and vibrations during service life, and are often in contact with corrosive media such as ammonia, hydrogen sulfide, hydrides, and acids. Therefore, automotive heat exchangers are required to use Aluminum alloy composite plates, strips, and foil materials must have good strength, brazing, heat dissipation, corrosion resistance, good sagging resistance, and excellent processing properties. [0003] At present, there are few types of aluminum alloy composite panels, strips, and foils produced by domestic enterprises. There is a big gap compared with foreign countries in terms of output and quality. Can not meet the requirements of use very well. With the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/20C22C21/00C22C21/02
Inventor 潘琰峰郭富安胡平纪艳丽刘国金
Owner 苏州有色金属研究院有限公司
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