Method for the preparation of a soldering flux

Details Method for the preparation of a soldering flux Method for the preparation of a soldering flux

1996-06-04

1999-10-19

Ryan, Patrick

Metal treatment

Compositions

Fluxing

148 23, 148 24, 423116, 423464, 423465, B23K 35362

Patent

active

059682884

ABSTRACT:
A method for the preparation of potassium salts of complex aluminum fluorides which can be used in particular as a flux in particular for soldering lightweight metallic materials. In the method a potassium compound is added to aqueous fluoroaluminic acid, and potassium cryolite or a substance mixture which contains potassium cryolite is added to the resulting suspension. The resulting product is then dried and can be used as a flux for soldering lightweight metallic materials, especially aluminum.

REFERENCES:
patent: 4428920 (1984-01-01), Willenburg et al.
patent: 4579605 (1986-04-01), Kawase et al.
patent: 4888067 (1989-12-01), Sato et al.
Abstract of Published Japanese Patent Application No. JP 53-05480. Nov. 19, 1993.

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