Copper fin material for heat-exchanger and method of producing t

Details Copper fin material for heat-exchanger and method of producing t Copper fin material for heat-exchanger and method of producing t

1989-12-21

1991-11-05

Dean, R.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having composition, density, or hardness gradient

428674, 428675, B32B 1501

Patent

active

050631179

ABSTRACT:
A copper fin material for heat-exchanger characterized in that, on the surface of Cu or Cu alloy strip, the formation of an inner side diffused layer comprising Cu and Zn and a surface side diffused layer being provided on the surface side thereof and comprising Cu, Zn and elements with a lower diffusion coefficient into Cu than that of Zn is disclosed. A method of producing the same is characterized in that, after an alloy film comprising elements with a lower diffusion coefficient into Cu than that of Zn and Zn was formed on the surface of Cu or Cu alloy strip, a diffusion treatment is given under heat so that, on the surface of Cu or Cu alloy strip, an inner side diffused layer comprising Cu and Zn and a surface side diffused layer being provided on the surface side thereof and comprising Cu, Zn and elements with a lower diffusion coefficient into Cu than that of Zn are formed, or the diffusion treatment under heat and the rolling processing are given.

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