Search International and National Patent Collections

1. (WO1998050197) FLUX COMPOSITION FOR BRAZING OF ALUMINUM MATERIAL AND METHOD FOR BRAZING OF ALUMINUM MATERIAL

Pub. No.:    WO/1998/050197    International Application No.:    PCT/JP1998/001919
Publication Date: Fri Nov 13 00:59:59 CET 1998 International Filing Date: Sat Apr 25 01:59:59 CEST 1998
IPC: B23K 1/00
B23K 1/20
B23K 35/36
F28F 13/18
Applicants: SHOWA ALUMINUM CORPORATION

NIPPON PAINT CO., LTD.

KOJIMA, Masahiro

WATANABE, Futoshi

TOUNAKA, Atsuhiko

YASUHARA, Kiyotada

NOJIRI, Hiroyuki

YAMASOE, Katsuyoshi

Inventors: KOJIMA, Masahiro

WATANABE, Futoshi

TOUNAKA, Atsuhiko

YASUHARA, Kiyotada

NOJIRI, Hiroyuki

YAMASOE, Katsuyoshi

Title: FLUX COMPOSITION FOR BRAZING OF ALUMINUM MATERIAL AND METHOD FOR BRAZING OF ALUMINUM MATERIAL
Abstract:
A flux composition for brazing of an aluminum material which can feed a proper amount of flux to an area to be joined at the time of brazing and at the same time can improve working environment, and a method for brazing of an aluminum material. The method comprises: coating an aluminum material to be jointed with a flux composition comprising 0.5 to 25 parts by weight of a polymeric compound having a number average molecular weight of 50000 to 5000000 and comprising repeating alkylene oxide units, 5 to 30 parts by weight of a fluoride flux, and water added in such an amount as will provide a total amount of the composition of 100 parts by weight; heating the coated area to remove water; heating the coated area to decompose and remove the polymeric compound; and then conducting heating for brazing.