Thermal treatment of brazed products for improved corrosion...

Details Thermal treatment of brazed products for improved corrosion... Thermal treatment of brazed products for improved corrosion...

C - Chemistry, Metallurgy

22

F

148/55.6

C22F 1/04 (2006.01) B23K 35/28 (2006.01)

Patent

CA 1278986

THERMAL TREATMENT OF BRAZED PRODUCTS FOR IMPROVED CORROSION RESISTANCE ABSTRACT OF THE DISCLOSURE Corrosion resistance in a brazed aluminum product is improved by subjecting the product to a heat treatment at a temperature of 300°F to 800°F for at least about one hour, preferably preceded by cooling the product to a temperature below the temperature ulti- mately selected for the treatment, and in any event below about 550°F. The useful life of brazed products such as automotive radiators is increased several times as a result of this treatment.

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