Flux used for brazing aluminum-based alloy

Details Flux used for brazing aluminum-based alloy Flux used for brazing aluminum-based alloy

B - Operations, Transporting

23

K

113/91, 148/62.1

B23K 35/34 (2006.01) B23K 35/36 (2006.01)

Patent

CA 1320416

--32-- ABSTRACT OF THE DISCLOSURE Fluxes for use in brazing aluminum-based alloy pieces are disclosed. One is a flux which comprises 70 to 90 wt % K2SiF6 and 30 to 10 wt % AlF3. The other is a flux which comprises 98.5 to 94 wt % base composition which includes K2SiF6 whose amount is 70 to 90 wt % of the base composition and AlF3 whose amount is 30 to 10 wt % of the base composition; 0.5 to 3 wt % LiF; and 1 to 3 wt % NaF. In order to facilitate the application of the flux to the pieces to be brazed, polybutene is used as a dispersing agent.

578701

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