Heat exchanger and method of producing same

Details Heat exchanger and method of producing same Heat exchanger and method of producing same

1989-02-27

1990-09-11

Ramsey, Kenneth J.

Metal fusion bonding

Process

Plural joints

165133, 165153, 1651341, F28F 1902

Patent

active

049555251

ABSTRACT:
A method of producing a heat exchanger comprising abutting a tube made of an aluminum material and fins made of an aluminum material, applying to the resulting abutments a flux containing zinc halide, and thereafter conducting a reaction soldering in an inert gas atmosphere. The assembled tube and fins applied with the flux may be moved in a position to enhance the formation of zinc deposited by the reaction soldering during the drying step of the flux. The heat exchanger produced by this method has a thick and uniform Zn coating at the joints with good mechanical strength and surface conditions.

REFERENCES:
patent: 2508501 (1950-05-01), Di Giulio
patent: 2867037 (1959-01-01), Lawton
patent: 4560625 (1985-12-01), Kaifu et al.
patent: 4645119 (1987-02-01), Haramaki et al.

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