Patent ID: 7926701
Filing Date: 2011-04-19
Classification: B23K,B32B,C22C

Abstract:
1. Process for assembly of aluminum alloy plates comprising fluxless brazing of the aluminum alloy plates to form an assembly under a controlled atmosphere consisting essentially of nitrogen and/or argon at a temperature of between 580° C. and 620° C., and rapid cooling, and in which at least one of the aluminum alloy plates consists essentially of: (a) a core alloy with composition (% by weight): (b) an aluminum brazing alloy coated as a single layer on at least one face of the core alloy, the aluminum brazing alloy including 4% to 15% of silicon and 0.01% to 0.5% of at least one element selected from the group consisting of Ag, Be, Bi, Ce, La, Pb, Pd, Sb, Y or mischmetal, the aluminum brazing alloy being free of sodium.