Process for the attenuation of electro-corrosion in cooler assem

Details Process for the attenuation of electro-corrosion in cooler assem Process for the attenuation of electro-corrosion in cooler assem

1978-06-23

1979-05-08

Lanham, C. W.

Metal fusion bonding

Process

Plural joints

228206, 228214, 20412975, 20412995, B23K 120

Patent

active

041531957

ABSTRACT:
A process for soldering aluminum fins to cooling pipes made of aluminum, copper, brass or steel to produce a cooling assembly. The fins are etched in the solution of sodium hydroxide, zinc chloride, technical urea and water and the cooling pipes are coated with a fusible alloy which is covered with a protective coating for attenuating electro-corrosion between the alloy and the aluminum fins. The aluminum fins are then mounted on the cooling pipes and soldered thereto in a thermal bath.

REFERENCES:
patent: 2791553 (1957-05-01), Connor et al.
patent: 2916402 (1959-12-01), Baird et al.
patent: 3631588 (1972-01-01), Barozzi et al.
patent: 3979043 (1976-09-01), Lowery
patent: 4037774 (1977-07-01), Barozzi et al.

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