Flux used in the low-temperature brazing and a method of flux br

Details Flux used in the low-temperature brazing and a method of flux br Flux used in the low-temperature brazing and a method of flux br

1994-10-13

1996-06-25

Andrews, Melvyn

Metal treatment

Compositions

Fluxing

228223, B23K 35365

Patent

active

055296394

ABSTRACT:
A novel flux is provided for use in the low-temperature brazing aluminum materials of varied compositions, the flux being composed of a KCl--NaCl--BaCl.sub.2 base and 0.5-5.0 wt. % of LiF and/or 1.0-10.0 wt. % of ZnCl.sub.2 added to the base. A method of flux brazing a low-melting aluminum material is also provided, and the method is carried out by applying such a novel flux as well as a low-melting brazing agent to the aluminum material portions to be adjoined. The brazing agent is composed of an Al--Si--Zn alloy which contains 3-12% by weight of Si and 15-70% by weight of Zn.

REFERENCES:
patent: 1968984 (1934-08-01), Binder
patent: 2299164 (1942-10-01), Miller
patent: 3636301 (1972-01-01), Yakovievich
patent: 3704149 (1972-11-01), DeLong
patent: 3865578 (1975-02-01), Takashima
patent: 3892561 (1975-07-01), Takahima
patent: 4643348 (1987-02-01), Takahashi
Patent Abstract of Japan; vol. 3, No. 118 (C-60) 4 Oct. 1979 & JP-A-54 100956; (Sumitomo Denki Kogyo) 8 Sep. 1969. (Abstract).

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