Brazeable aluminum alloy cast material and method of brazing the

Details Brazeable aluminum alloy cast material and method of brazing the Brazeable aluminum alloy cast material and method of brazing the

1996-07-08

1999-01-26

Heinrich, Samuel M.

Metal fusion bonding

Process

With protecting of work or filler or applying flux

22826251, B23K 119

Patent

active

058629769

ABSTRACT:
Objects of the present invention are to provide a brazeable aluminum alloy cast material which can be manufactured brazeable products without lowering the productivity and the method of brazing a cast material.
The cast material is composed of: 0.5-4.5% by weight of Mn; 0.5-3% by weight of Si; 0.5-1% by weight of Fe; and the balance composed of aluminum and impurities. In the method of brazing the cast material, a brazing agent and/or flux are used, the brazing agent is composed of: 25-65% by weight of Zn; 2-7% by weight of Si; and the balance composed of aluminum and 0.1% or less of Fe as one of impurities. The flux is a mixture of: 0.5-5% by weight of LiF; 1-10% by weight of ZnCl.sub.2 ; 1-5% by weight of K.sub..alpha. AlF.sub..alpha.+3 (.alpha. is an integer not less than 1.); and the balance composed of BaCl.sub.2 -KCl-NaCl.

REFERENCES:
patent: 5529639 (1996-06-01), Sato et al.
Metals Handbook 8th Edition, vol. 8, pp. 392-393, 1973.
Patent Abstracts of Japan, pub #JP7090446, Apr. 4, 1995.
Patent Abstracts of Japan, pub #JP7041919, Feb. 10, 1995.

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