A1-alloy heat exchanger

F - Mech Eng,Light,Heat,Weapons – 28 – F

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F28F 21/08 (2006.01) B23K 1/00 (2006.01) F28D 1/03 (2006.01) F28F 9/16 (2006.01)

Patent

CA 2233036

In an Al-alloy heat exchanger, the core material of brazing sheets constituting tube elements is an Al alloy consisting essentially of 1 to 1.5% by weight of Mn, 0.1 to 0.5% by weight of Cu, 0.05 to 0.2% by weight of Zr, and the balance being Al and impurities: the brazing sheets are formed by cladding both sides or one side of the core material with a brazing filler metal comprising an Al alloy containing at least Si; and an Al-alloy consisting essentially of 0.05 to 0.2% by weight of Zr and the balance being Al and impurities is used as the fin material constituting the air-side fins.

Dans un échangeur de chaleur en alliage Al, le matériau de l'âme de feuilles de brasage constituant des éléments tubulaires est un alliage Al comprenant de 1 à 1,5 % en poids de Mn, de 0,1 à 0,5 % en poids de Cu, de 0,05 à 0,2 % en poids de Zr, le reste étant de l'aluminium et des impuretés; les feuilles de brasage sont formées par plaquage des deux côtés ou d'un seul côté du matériau de l'âme avec un métal d'apport pour brasage composé d'un alliage Al contenant au moins du Si; et un alliage Al comportant de 0,05 à 0,2 % en poids de Zr, le reste étant de l'aluminium et des impuretés, est utilisé comme matériau des ailettes côté air.

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