Method of brazing an aluminum heat exchanger

Details Method of brazing an aluminum heat exchanger Method of brazing an aluminum heat exchanger

1984-07-05

1987-02-24

Ramsey, Kenneth J.

Metal fusion bonding

Process

Plural joints

148 24, 228207, 228219, 22826317, B23K 3534

Patent

active

046451196

ABSTRACT:
A heat exchanger and a method of manufacturing a heat exchanger by brazing metal members mainly made of Al or Al alloy is disclosed. The heat exchanger has a plurality of brazed metal members, at least one of the brazed metal members being made of brazing sheet clad with a brazing material. The brazed portions of the metal members or the whole surface of the heat exchanger are coated with a corrosion-resistant fluoride flux consisting essentially of 25-40% KF, 38-54% AlF3 and 3-30% ZnF2 by weight which forms a corrosion-inhibiting metallic film.

REFERENCES:
patent: 2299164 (1942-10-01), Miller
patent: 3301688 (1967-01-01), Simpelaar
patent: 3855682 (1974-12-01), Chartet
patent: 3951328 (1976-04-01), Wallace et al.

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