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High performance aluminum alloy composite foil for heat converter and method of manufacture

A technology for heat exchangers and aluminum alloys, which is applied to aluminum alloys, high-performance aluminum alloy composite foils for heat exchangers and their manufacturing fields, can solve the problems of low strength, unstable performance, low tensile strength and low sag resistance, etc. Achieve excellent tensile strength, excellent hot workability, and the effect of being beneficial to manufacturing

Inactive Publication Date: 2008-11-19
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

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a high-performance aluminum alloy composite foil material for heat exchangers and its production process, and aim to effectively solve the problems of low strength and unstable performance of the existing aluminum alloy composite foil materials. The overall performance cannot well meet the requirements of use, especially to overcome the defects of low tensile strength and sag resistance

Method used

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  • High performance aluminum alloy composite foil for heat converter and method of manufacture
  • High performance aluminum alloy composite foil for heat converter and method of manufacture
  • High performance aluminum alloy composite foil for heat converter and method of manufacture

Examples

Experimental program
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Effect test

Embodiment 1

[0039] According to the present invention, one group of alloy compositions is selected for testing, and the chemical composition of the molten alloy is shown in Table 1.

[0040] Table 1

[0041]

[0042] In the process of alloy smelting, each element has different degrees of burning loss. The burning loss rate is Mg: 5-12%, Zn: 5-8%, Mn: 1 to 5%, Cr: 0-3%, Cu :0~3%, the burning loss of each element should be made up during the batching process.

[0043] According to the above implementation method, a single-sided coated aluminum alloy composite foil is obtained, and the metallographic structure is as figure 1 As shown, the final thickness is 0.3mm, and the final cold rolling deformation rates are respectively 40% and 70%. Through finish annealing, products in O state and H24 state are obtained.

[0044] Cut the test piece from the strip obtained above, and measure the tensile strength, yield strength, elongation, and sag resistance. The strength and elongation index are measur...

Embodiment 2

[0049] The alloy composition of this example is the same as in Table 1.

[0050] According to the process parameters selected in Example 1, a double-sided coated aluminum alloy composite foil is obtained, and the metallographic structure is as follows figure 2 As shown, the final thickness is 0.3mm, and the final cold rolling deformation rates are respectively 40% and 70%. Through finish annealing, products in O state and H24 state are obtained.

[0051] According to the detection method of Example 1, the performance results of the aluminum alloy composite foil obtained in this example are recorded in Table 3.

[0052] table 3

[0053]

[0054] The final cold rolling deformation rate of sample 3# is 40%, and the final cold rolling deformation rate of sample 4# is 70%; the test parameters are the same as Table 2.

[0055] It can be shown that this aluminum alloy composite foil has excellent tensile strength, yield strength, elongation and sag resistance, and has good processabili...

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Abstract

The invention provides a high performance aluminum alloy composite foil for a heat exchanger and a producing method thereof. An Al-Mn alloy of a core layer is coated with an Al-Si alloy on one side or both sides. The composite foil adopts the processes of: the Al-Si alloy and the Al-Mn alloy are respectively cast into ingot with the Al-Si alloy ingot hot-rolled after homogenizing treatment while the Al-Mn alloy ingot is face-milled after homogenizing treatment, then an Al-Si alloy hot rolled plate and the Al-Mn alloy ingot are paired and welded after surface treatment; the acquired covering slab is heated at a temperature of between 460 and 520 DEG C for hot rolling compounding for 4 to 9 hours, and the temperature of finishing rolling is controlled at a temperature of between 270 and 320 DEG C; and a hot rolling compounding plate goes on cold rough rolling and cold finish rolling after intermediate annealing at a temperature between 300 and 430 DEG C for 1 to 3 hours with deformation amount ranging from 30 percent to 70 percent, then a usage-state product in O and H24 treatment state is obtained through final annealing. The aluminum alloy composite foil has the advantages of excellent tensile strength, yield strength, elongation and sag resistance, appearing to be the ideal material in manufacturing components of the heat exchanger.

Description

Technical field [0001] The invention relates to an aluminum alloy, in particular to a high-performance aluminum alloy composite foil for heat exchangers and a manufacturing method thereof, and belongs to the technical field of non-ferrous metals. Background technique [0002] Aluminum and its aluminum alloy have a series of excellent characteristics such as low density, corrosion resistance, good elasticity, high specific strength and specific rigidity, good impact resistance, easy surface coloring, good processing and formability, and easy recycling. The most ideal material for lightweight. The lightweight of automobile heat exchange system (water tank radiator, evaporator, condenser, intercooler, heater, air cooler) is an important field of automobile lightweight. The weight of aluminum radiator is 37-45% lighter than traditional copper alloy radiator, the heat exchange rate is 12% higher, and the strength, corrosion resistance, brazing and other properties can meet the require...

Claims

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Application Information

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IPC IPC(8): F28F21/08B23P17/00
Inventor 潘琰峰郭富安纪艳丽刘国金
Owner 苏州有色金属研究院有限公司
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