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Aluminum alloy, heat exchanger, aluminum alloy composite and preparation method of aluminum alloy composite

A composite material and aluminum alloy technology, applied in the field of aluminum alloy composite materials for brazing, can solve the problems of thinning thickness, inability to meet the strength requirements of brazing aluminum alloy composite materials, etc., to improve production efficiency, yield, and high strength Effect

Inactive Publication Date: 2017-03-22
YINBANG CLAD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing aluminum alloy composite material cannot meet the strength requirements of the brazed aluminum alloy composite material due to the thickness reduction

Method used

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  • Aluminum alloy, heat exchanger, aluminum alloy composite and preparation method of aluminum alloy composite
  • Aluminum alloy, heat exchanger, aluminum alloy composite and preparation method of aluminum alloy composite

Examples

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Embodiment 1

[0054] This embodiment provides a three-layer structure aluminum alloy composite material, the structure of which is as figure 1 Shown. The middle layer is AA3003Mod aluminum alloy, and the top and bottom layers are both AA4045 aluminum alloy. The mass percentage of each component in AA3003Mod aluminum alloy is as follows: Mn is 1.5%, Mg is 0.2%, Si is 0.1%, Fe is 0.32%, Cu is 0.76%, Ti is 0.02%, Zr is 0.1%, and the rest is Al and Impurities are inevitable.

[0055] The preparation process is as figure 2 As shown, the details are as follows:

[0056] 1) Alloy casting: DC casting is used to cast AA4045 aluminum alloy and AA3003Mod aluminum alloy, and the ingot size is 450×1120×5100mm.

[0057] 2) Composite pretreatment: Surface treatment of AA4045 aluminum alloy, and milling treatment of AA3003Mod aluminum alloy to 419mm; AA4045 aluminum alloy after surface treatment is hot rolled to 42.5mm, and then evenly divided into 5100mm length.

[0058] 3) Hot-rolled composite: Stacked and fi...

Embodiment 2

[0063] This embodiment provides a three-layer structure aluminum alloy composite material, the structure of which is as figure 1 Shown. The middle layer is AA3003Mod aluminum alloy, the top layer is AA4045 aluminum alloy, and the bottom layer is AA7072 aluminum alloy. Among them, the mass percentages of each component in the AA3003Mod aluminum alloy are as follows: Mn is 1.36%, Mg is 0.18%, Si is 0.3%, Fe is 0.3%, Cu is 0.7%, Ti is 0.01%, Zr is 0.09%, and the rest is Al and unavoidable impurities.

[0064] The preparation process is as figure 2 As shown, the details are as follows:

[0065] 1) Alloy casting: DC casting is used to cast AA4045 aluminum alloy, AA7072 aluminum alloy and AA3003Mod aluminum alloy, and the ingot size is 450×1120×5100mm.

[0066] 2) Composite pre-treatment: surface treatment of AA4045 aluminum alloy and AA7072 aluminum alloy, and milling of AA3003Mod aluminum alloy to 420mm; after surface treatment, AA4045 aluminum alloy and AA7072 aluminum alloy are hot ...

Embodiment 3

[0072] This embodiment provides a three-layer structure aluminum alloy composite material, the structure of which is as figure 1 Shown. The middle layer is AA3003Mod aluminum alloy, and the top and bottom layers are both AA4045 aluminum alloy. Among them, the mass percentages of the components in the AA3003Mod aluminum alloy are as follows: Mn is 1.8%, Mg is 0.15%, Si is 0.7%, Fe is 0.4%, Cu is 0.2%, Ti is 0.02%, Zr is 0.13%, and the rest is Al and unavoidable impurities.

[0073] The preparation process is as figure 2 As shown, the details are as follows:

[0074] 1) Alloy casting: DC casting is used to cast AA4045 aluminum alloy and AA3003Mod aluminum alloy, and the ingot size is 450×1120×5100mm.

[0075] 2) Composite pre-treatment: surface treatment of AA4045 aluminum alloy, and milling treatment of AA3003Mod aluminum alloy to 422mm; after surface treatment, AA4045 aluminum alloy is hot rolled to 41.5mm, and then evenly divided into 5100mm length.

[0076] 3) Hot-rolled composit...

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Abstract

The invention discloses an aluminum alloy, an aluminum alloy composite for CAB brazing, a preparation method of the aluminum alloy composite and a heat exchanger made of the aluminum alloy composite. The aluminum alloy comprises, by mass percentage, 0.1%-0.3% of Mg, 1.0%-1.8% of Mn, 0.01%-1.0% of Si, 0.2%-0.9% of Cu, 0.1%-0.7% of Fe, not larger than 0.02% of Ti, not larger than 0.13% of Zr, and the balance Al and inevitable impurities. The aluminum alloy composite prepared by the novel aluminum alloy as a core material is high in post-welding strength and can be used for CAB brazing.

Description

Technical field [0001] The invention relates to an aluminum alloy composite material for brazing, in particular to a novel aluminum alloy, an aluminum alloy composite material for CAB brazing, a preparation method thereof, and a heat exchanger prepared from the aluminum alloy composite material. Background technique [0002] Aluminum alloy has excellent properties such as abundant reserves, high strength-to-mass ratio, good corrosion resistance, high heat transfer coefficient and easy processing. As a heat transfer material, it is widely used in the field of heat exchangers. At present, the demand for lightweight in engineering applications is becoming stronger, and the development of lighter and thinner aluminum heat exchangers has become an important research direction. In order to reduce the weight and thickness of the aluminum heat exchanger, the corresponding brazed aluminum alloy composite material needs to have higher strength under the same load or force condition to prev...

Claims

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Application Information

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IPC IPC(8): B23K35/28B23K35/40C22C21/00C22F1/04C22F1/043
CPCB23K35/286B23K35/40C22C21/00C22F1/04C22F1/043
Inventor 周德敬刘灿威曾丽舟郑珊
Owner YINBANG CLAD MATERIAL
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