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Aluminium alloy material for radiator fin

A technology of aluminum alloy materials and radiators, which is applied in the field of aluminum alloy materials, can solve problems such as preferential corrosion of joints, increased manufacturing costs of heat exchangers, and inability to obtain anti-corrosion effects of refrigerant passage pipes, etc., to achieve improved corrosion resistance, The effect of increasing strength

Inactive Publication Date: 2012-01-25
SUZHOU FANGJIYUAN ENERGY SAVING TECH
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Problems solved by technology

In the former case, due to the high cost of the powdered brazing material, the manufacturing cost of the heat exchanger is increased. The amount of Zn remaining on the outer surface of the refrigerant passage pipe does not reach the amount of Zn required as a sacrificial anode material, resulting in failure to obtain a sufficient anti-corrosion effect of the refrigerant passage pipe, or because molten solder containing Zn flows to the junction, Causes preferential corrosion of joints

Method used

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Embodiment Construction

[0021] The present invention will be further explained and described below in conjunction with specific embodiments.

[0022] According to the mass percentage shown in Table 1, the aluminum alloy material described in the present invention was prepared. The specific preparation process is as follows: heat the alloy raw materials of Si, Mn, Zn, Cu and Al according to the percentage ratio shown in Table 1 to 650 °C for 60 min under a nitrogen protective atmosphere; 0.3wt% MnCl 2 , stirred for 35 min; then the alloy liquid was poured into shape; the casting temperature was 580 °C; then it was kept at 420 °C for 4 h for homogenization treatment, and cooled to obtain the aluminum alloy material of the radiator fin.

[0023] Table 1 Chemical composition of base aluminum alloy

[0024] serial number Si mn Zn Cu Al 1 0.5 0.5 0.25 0.30 margin 2 0.6 0.7 0.35 0.33 margin 3 0.7 0.9 0.50 0.36 margin 4 0.8 1.1 0.75 0.39 margin ...

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Abstract

The invention relates to an aluminium alloy material for a radiator fin, which is characterized by comprising the following components in percentage by weight: 0.5-1.2wt% of Si, 0.5-1.8wt% of Mn, 0.25-1.8wt% of Zn, 0.30-0.55wt% of Cu and the balance of Al and inevitable impurities. The aluminium alloy material disclosed by the invention has the advantages of high strength property and solderability, excellent corrosion resistance and good machinability, and is especially suitable to serve as the radiator fin.

Description

technical field [0001] The invention relates to an aluminum alloy material, in particular the invention relates to an aluminum alloy material suitable for radiator fins, which has excellent corrosion resistance and good machinability. Background technique [0002] Aluminum alloys that are lightweight and have good thermal conductivity have been used in heat exchangers such as evaporators and condensers. Usually, these heat exchangers are manufactured by, for example, bending sheet materials or laminating sheets formed by press working to form cooling flat tubes for the working fluid. [0003] In terms of corrosion resistance, due to corrosion from the outer surface and inside, when a breakthrough occurs in the refrigerant passage pipe prematurely, the refrigerant leaks and cannot function as a heat exchanger. Anti-corrosion treatment is applied to the outer surface of the tubes, thereby prolonging the life of the heat exchanger. Conventionally, the method of coating the ou...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22C21/18C22F1/04C22C21/00C22F1/057C22C21/02C22F1/053F28F21/08C22F1/043
Inventor 杨贻方
Owner SUZHOU FANGJIYUAN ENERGY SAVING TECH
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