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Copper-nickel alloy

A technology of copper-nickel alloy and alloy, which is applied in the field of copper-nickel alloy materials and copper-nickel alloy, can solve the problems of reduced corrosion resistance of fin materials, high manufacturing cost, and increased manufacturing cost of heat exchangers, etc., to achieve uniform grains and Fineness, improved corrosion resistance, and the effect of improving corrosion resistance

Inactive Publication Date: 2013-10-16
贵州合润铝业新材料科技股份有限公司
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AI Technical Summary

Problems solved by technology

However, the structure of most heat exchangers is a structure in which fins are joined on the outer surface of the refrigerant passage tube. Since there is no brazing material on the outer surface of the refrigerant passage tube in this method, it is necessary to use a brazing filler metal coated with brazing material. Fin material
At this time, due to the influence of the solder remaining on the surface of the fin, the corrosion resistance of the fin material itself is reduced, and the manufacturing cost of the clad fin material is higher than that of the bare fin, which leads to an increase in the manufacturing cost of the heat exchanger.
[0004] In this field, the cost of heat exchange plates made of copper-nickel alloy is too high, and the cost of Ni element is expensive, which makes it difficult to popularize the use of nickel-copper alloy heat exchange plates

Method used

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  • Copper-nickel alloy

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Embodiment Construction

[0016] The present invention will be further explained and described below in conjunction with specific embodiments.

[0017] According to the mass percentage shown in Table 1, the copper-nickel alloy described in the present invention was prepared. The specific preparation process is as follows: heating the alloy raw materials of Ni, Fe, B, Si, Sn and Cu according to the percentage ratio shown in Table 1 to 1250°C for 70min under nitrogen protection atmosphere; 0.5 wt% BaCl 2 , stirred for 60 minutes; then the alloy solution was poured into shape; the casting temperature was 1250° C.; and then kept at 780° C. for 5 hours for homogenization treatment, and cooled to obtain the copper-nickel alloy of the heat exchanger plate.

[0018] Table 1 Chemical Composition of Base Metal Copper-Nickel Alloy

[0019]

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Abstract

The present invention relates to a copper-nickel alloy, which comprises (wt%), 9-11% of Ni, 0.5-0.8% of Fe, 0.005-0.01% of boron, less than or equal to 0.13% of Si, 0.04-0.06% of Sn, and the balance of copper. The heat exchange plate manufactured from the copper-nickel alloy has advantages of low cost, high strength characteristic, high solderability, excellent corrosion resistance, and good workability.

Description

technical field [0001] The present invention relates to a copper-nickel alloy, in particular the present invention relates to a copper-nickel alloy material suitable for heat exchanger plates, more specifically to a heat exchange plate, and more specifically to a copper-nickel alloy exchange Hot plate, which has excellent corrosion resistance, and its machinability is good. Background technique [0002] Copper-nickel 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 trea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C1/02C22F1/08
Inventor 毛胜伟方志军陈杰夏志生
Owner 贵州合润铝业新材料科技股份有限公司
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