Copper alloy material for radiator fins

A copper alloy and radiator technology, applied in the field of copper alloy materials, can solve the problems of damage, easy occurrence of wrinkles or cracks in the bending part, and achieve good heat resistance, reduce the tendency of intergranular corrosion, and excellent cold working performance. Effect

Inactive Publication Date: 2012-02-08
SUZHOU FANGJIYUAN ENERGY SAVING TECH
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Problems solved by technology

[0007] In addition, the strength is improved by the solid solution strength of Sn, and the wall thickness of the tube can be reduced when used in a heat transfer tube. Wrinkles or cracks are prone to occur in the part, and this part becomes the starting point and will be destroyed at a low strength that does not reach the expectation

Method used

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Embodiment Construction

[0026] The present invention will be further explained and described below in conjunction with specific embodiments.

[0027] According to the mass percentage shown in Table 1, the copper alloy material described in the present invention was prepared. The specific preparation process is as follows: heating the alloy raw materials of Sn, P, Zn, Al, Mg, Cr and Cu according to the above weight percentage ratio to 1250 ℃ for 150 min under nitrogen protection atmosphere; 0.3wt% BaCl 2 , stirred for 45 min; then the alloy solution was poured at 1180 °C; then kept at 720 °C for 5 h for homogenization treatment, and cooled to obtain the copper alloy material.

[0028] Table 1 Chemical composition of the base metal (the balance is Cu)

[0029] Numbering sn P Zn Al Mg Cr 1 0.3 0.50 1.2 8.2 0.5 0.3 2 0.5 0.05 1.35 8.8 1.6 0.5 3 0.6 0.06 1.5 9.4 0.7 0.7 4 0.7 0.06 1.65 10.0 0.8 0.9 5 0.8 0.07 1.80 10.8 0.9 1.1 6 1....

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Abstract

The invention relates to a copper alloy material for radiator fins. The material comprises components of, by weight: 0.3 to 1.2 of Sn, 0.05 to 0.10% of P, 1.2 to 2.5% of Zn, 8.2 to 13.5% of Al, 0.5 to 1.2% of Mg, 0.3 to 1.6 parts of Cr, and balance of Cu and inevitable impurities. The thermal resistance of the copper alloy material is good. When prepared copper alloy radiator fins are heated to a high temperature of 700 DEG C, excellent intensive properties are maintained in the fins. Also, processing property and especially cold processing property of the material is excellent.

Description

technical field [0001] The invention relates to a copper alloy material, in particular to a copper alloy material suitable for radiator fins, which has excellent corrosion resistance and good machinability. Background technique [0002] Usually used for finned tube heat exchangers, it is a U-shaped copper tube (or copper alloy tube) that is bent into a thin pin shape, and the through hole of the heat sink made of aluminum or aluminum alloy plate is inserted into the copper tube expansion tool. The copper tube is expanded in the tube, thereby making the copper tube and the aluminum heat sink tightly bonded. In addition, the open end of the copper tube is expanded, and a curved copper tube bent into a U shape is inserted into the expanded tube to open. At the end, the bent copper tube is brazed to the expanded open end of the U-shaped copper tube with brazing material such as phosphor copper, thereby connecting multiple U-shaped copper tubes through the bent copper tube to mak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/01F28F21/08
Inventor 杨贻方
Owner SUZHOU FANGJIYUAN ENERGY SAVING TECH
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