Method for brazing aluminum alloy-assembled articles within...

Details Method for brazing aluminum alloy-assembled articles within... Method for brazing aluminum alloy-assembled articles within...

2005-01-11

2005-01-11

King, Roy (Department: 1742)

Metal fusion bonding

Process

Critical work component, temperature, or pressure

C420S437000, C420S540000, C228S219000, C148S438000

Reexamination Certificate

active

06840435

ABSTRACT:
A method for brazing aluminum alloy-assembled articles with a filler alloy having a liquidus temperature of 540° C. or lower and a difference of temperature between the liquidus temperature and the solidus temperature being 100° C. or lower, wherein the highest temperature reached in the assembled article at the time of heating for brazing being set 40° C. or more higher than the liquidus temperature but 585° C. or lower. An aluminum alloy-filler alloy usable at low temperature for brazing, which comprises Si in an amount of 4.0 wt % to 8.0 wt %, Zn in an amount of 7.0 wt % to 20.0 wt % and Cu in an amount of 10.0 wt % to 35.0 wt %, with the balance being made of aluminum.

REFERENCES:
patent: 5316206 (1994-05-01), Syslak et al.
patent: 5407124 (1995-04-01), Bose
patent: 03-057588 (1991-03-01), None
patent: 06-226489 (1994-08-01), None
patent: 08-215579 (1996-08-01), None

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