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Aluminum foil used for heat exchanger and manufacturing method thereof

A technology of a heat exchanger and a manufacturing method, which is applied in the field of aluminum alloy foil, can solve the problems of insufficient bonding between fins and metal tubes, affecting the heat exchange effect, punching and cracking, etc., and achieves excellent mechanical properties and formability. The effect of low processing cost and moderate processing temperature

Inactive Publication Date: 2008-01-16
RUYUAN DONGYANG UACJ PRECISION FOIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the punching part of the fin is cracked, the bonding between the fin and the metal tube will be insufficient, which will affect the heat transfer effect. Obviously, thinner materials are more prone to punching cracking and flanging cracking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Chemical composition of materials: Table 2

[0043] Aluminum content (%)

Si

Fe

Cu

V

Ti

Impurities

98.990

0.20

0.70

0.04

0.02

0.025

margin

[0044] Manufacturing method one (DC method):

[0045] (1) Calculate and prepare the materials according to the above target composition, put most of the raw materials into the melting furnace for melting, the melting temperature is controlled at 750°C, after refining, slag removal, stirring, analysis and adjusting the composition, enter the static furnace and let it stand , Refining, degassing, slag removal, adding Al-5Ti-1B wire into the molten aluminum and then entering the casting machine to cast into ingots, casting process parameters: casting temperature is controlled at 690°C;

[0046] (2) The heat preservation temperature of the homogenization treatment is controlled at 550°C, and the metal heat preservation time is 30 hours;

...

Embodiment 2

[0055] Chemical composition of materials: Table 3

[0056] Aluminum content (%)

Si

Fe

Cu

V

Ti

Impurities

98.70

0.27

0.82

0.035

0.02

0.03

margin

[0057] Production method one (DC method):

[0058] (1) Calculate and prepare the materials according to the above target composition, put most of the raw materials into the melting furnace for melting, the melting temperature is controlled at 765°C, after refining, slag removal, stirring, analysis and adjustment of the composition, enter the static furnace and let it stand , Refining, degassing, slag removal, adding Al-5Ti-1B wire into the molten aluminum and then entering the casting machine to cast into ingots. Casting process parameters: casting temperature is controlled at 700°C;

[0059] (2) The heat preservation temperature of the homogenization treatment is controlled at 610°C, and the metal heat preservation time is 10 hours;

[0060...

Embodiment 3

[0068] Chemical composition of materials: Table 4

[0069] Aluminum content (%)

Si

Fe

Cu

V

Ti

Impurities

98.90

0.28

0.74

0.035

0.015

0.015

margin

[0070] Production method one (DC method):

[0071] (1) Calculate and prepare the materials according to the above target composition, put most of the raw materials into the melting furnace for melting, the melting temperature is controlled at 755°C, after refining, slag removal, stirring, analysis and adjusting the composition, enter the static furnace and let it stand , Refining, degassing, slag removal, adding Al-5Ti-1B wire into the molten aluminum and then entering the casting machine to cast into ingots. Casting process parameters: casting temperature is controlled at 695°C;

[0072] (2) The heat preservation temperature of the homogenization treatment is controlled at 600°C, and the metal heat preservation time is 15 hours;

[0...

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Abstract

The invention relates to an aluminum foil used for heat exchangers and the manufacturing method thereof. The components of the aluminum foil comprise Al, Si, Fe, Cu, Ti and inevitable impurity, and further comprise V. The weight contents of the components are as follows: Al: more than or equal to 98.50 percent, Si: 0.10-0.35 percent, Fe: 0.50-0.90 percent, Cu: 0.01-0.10 percent, V: 0.005-0.05 percent, Ti: 0.01-0.05 percent, and impurity in balance. The inventive aluminum foil used for heat exchangers and the manufacturing method thereof have the advantages of stable performance, good plate shape and good quality of plate surface, low cost, good mechanical property and molding property (even the thickness of aluminum foil is reduced to 0.080-0.094mm).

Description

technical field [0001] The present invention relates to an aluminum alloy foil, and more specifically, the present invention relates to an aluminum alloy foil for heat exchanger fins and a manufacturing method thereof. Background technique [0002] With the continuous improvement of people's living standards, the demand for air conditioners and the supply market are developing rapidly. At present, my country has become the largest production base of air conditioners in the world. The heat exchanger of the air conditioner is usually assembled by fins made of aluminum alloy foil (by deep drawing) and metal tubes passing through the fins. The metal tube passes through the punched part of the fin, and after the tube is expanded, the metal tube and the fin are closely attached. When the air conditioner is running, the refrigerant exchanges heat with the outside through the metal tube and the fin. If the punching part of the fin is cracked, the bonding between the fin and the met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22F1/04B21B1/40B21B37/16C22C1/02B22D21/04B21B37/74
Inventor 叶章良池国明黄世恒
Owner RUYUAN DONGYANG UACJ PRECISION FOIL CO LTD
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