Brazing filler alloy containing calcium

Details Brazing filler alloy containing calcium Brazing filler alloy containing calcium

1998-04-08

2000-11-28

Heinrich, Samuel M.

Metal fusion bonding

Process

With pretreating other than heating or cooling of work part...

22826251, 228219, B23K 3102, B23K 3522, B23K 35363

Patent

active

061523542

ABSTRACT:
Minor additions of calcium (Ca) to Al--(1% to 14%) Si filler metals result in larger fillets than conventional Al--Si alloys normally used in the NOCOLOK brazing process. This new filler metal can be clad to 2XXX, 3XXX, 6XXX, and 7XXX series alloys and brazed with a fluoride flux. The filler metal contains between 0.005% Ca to 0.3% Ca. The new filler metal could have up to 0.3% Mg and up to 0.3% Li. Additionally, the brazing process can optionally include an aqueous treatment with a fluoride salt to reduce the need for NOCOLOK fluxing.

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