Production of aluminum brazing sheet

Details Production of aluminum brazing sheet Production of aluminum brazing sheet

1977-11-09

1979-03-27

Lanham, C.W.

Metal fusion bonding

Process

With shaping

228190, 228235, 228238, 228263, 428654, B23K 1900

Patent

active

041461630

ABSTRACT:
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 an 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 incidental 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 remainder aluminum and incidental impurities. The composite assembly is hot bonded by rolling in a reversing mill and thereafter formed into brazing sheet in a continuous rolling mill.

REFERENCES:
patent: 2800709 (1957-07-01), Gaul
patent: 2821014 (1958-01-01), Miller
patent: 3321828 (1967-05-01), Miller
patent: 3788824 (1974-01-01), Singleton et al.
patent: 3853547 (1974-12-01), Singleton
patent: 3891400 (1975-06-01), Robinson
patent: 3963453 (1976-06-01), Singleton
patent: 3963454 (1976-06-01), Singleton
patent: 3994695 (1976-11-01), Setzer et al.
"Aluminum 3003" Alloy Digest, No. Al-31, Dec. 1973.

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