Production of aluminum brazing sheet

Details Production of aluminum brazing sheet Production of aluminum brazing sheet

B - Operations, Transporting

23

K

13/20

B23K 3/00 (2006.01) B21B 3/00 (2006.01) B23K 20/04 (2006.01) B23K 35/28 (2006.01)

Patent

CA 1084661

Abstract of the Disclosure Aluminum brazing sheet is produced from a composite assembly comprising an ingot of aluminum alloy, at least one side of the ingot provided with a layer of aluminum brazing alloy consisting essentially of not greater than 0.35 wt.% magnesium and 6.0 to 13.0 wt.% silicon, the remainder aluminum and inci- dental impurities. A layer of aluminum for rolling purposes is provided on at least one of said ingot and said brazing layer, the rolling layer being substantially free of elemental silicon and consisting essentially of 0.2 wt.% Cu max., 0.4 wt.% Fe max., 0.05 wt.% max. for both Mn and Ti, up to 1.0 wt.% Mg, the re- mainder aluminum and incidental impurities. The composite assembly is hot bonded by rolling in a reversing mill and there- after formed into brazing sheet in a continuous rolling mill.

316088

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