Fin of heat exchanger and method of making it

Details Fin of heat exchanger and method of making it Fin of heat exchanger and method of making it

1989-06-27

1990-01-09

Lazarus, Ira S.

Heat exchange

With coated, roughened or polished surface

1651341, 165905, F28F 1902

Patent

active

048921416

ABSTRACT:
A fin is provided, wherein a Cu-Zn diffused alloy layer with a Zn content of not less than 1 wt % is formed on at least a portion of the surface of Cu-based substrate for a fin. For the formation of such a Cu-Zn diffused alloy layer, Zn is allowed to diffuse thermally after covered the surface of Cu-based substrate with Zn or Zn alloy, and a rolling processing is carried out after the thermal diffusion to finish to a desired size. The Zn concentration of the fin decreases continuously from the outside surface of the Cu-Zn diffused layer to the interface between that layer and the Cu-based fin substrate.

REFERENCES:
patent: 3857681 (1974-12-01), Yates et al.
Patent Abstracts of Japan, vol. 8, No. 207 (M-327) [1644], 21st Sep. 1984; & JP-A-59 95 397 (Nippon Radiator K.K.) 01-06-1984.
Patent Abstracts of Japan, vol. 9, No. 279 (M 427) [2002] 7th Nov. 1985; & JP-A-60 122 896 (Nippon Radiator K.K.) 01-07-1985.

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