Abstract: The invention concerns a method for the manufacturing of a clad sheet product comprising a core layer (6) and at least one cladding layer, the method comprising rolling an assembly of a core layer and at least one cladding layer and reducing the thickness to a desired gauge, the core layer being made of an aluminium alloy, the at least one cladding layer comprising a centre section (2) and at least two edge sections (4, 5) positioned at opposite sides of the centre section (2) along the edges of the at least one cladding layer, the centre section being made of a material being an aluminium alloy or a composite material comprising a matrix of aluminium or an aluminium alloy, the edge sections along (4, 5) the edges being made of a material different from the material of the centre section, wherein the edge sections (4, 5) are cut off during or after the rolling. The invention further concerns a cladding plate useful in the method.

Abstract: The invention concerns a brazing sheet comprising a core layer (5) and a braze cladding, said core layer (5) being aluminium or an aluminium alloy, said braze cladding comprising (a) a flux composite layer (2), which flux composite layer comprises a matrix of aluminium or an aluminium alloy, said matrix containing flux particles; (b) at least one filler alloy layer (1) not containing flux particles; and, (c) an aluminium or aluminium alloy layer (3) not containing flux particles, said layer forming the outermost surface of at least one side of the brazing sheet, wherein the flux composite layer (a) is positioned between said filler alloy layer (b) and said aluminium or aluminium alloy layer (c). The invention further concerns a method for its manufacturing, a cladding plate, use of the brazing sheet and a brazed heat exchanger.

Abstract: Brazing sheet having a core layer made of a first aluminium alloy, attached to one side of said core layer a sacrificial cladding made of a second aluminium alloy, and attached to the other side of said core layer a braze cladding made of a third aluminium alloy. The first aluminium alloy consists of: Si ?0.6 wt %; Fe ?0.7 wt %; Cu 0.4-0.9 wt %; Mn 1.0-1.6 wt %; Mg ?0.2 wt %; Cr 0.05-0.15 wt %; Zr 0.05-0.15 wt %; Ti 0.05-0.15 wt %; other elements ?0.05 wt % each and ?0.2 wt % total; Al balance up to 100 wt %; the second aluminium alloy consists of: Si 0.65-1.0 wt %; Fe ?0.4 wt %; Cu ?0.05 wt %; Mn 1.4-1.8 wt %; Zn 1.5-4.0 wt %; Zr 0.05-0.20 wt %; other elements ?0.05 wt % each and ?0.2 wt % total; Al balance up to 100 wt %. The third aluminium alloy has a melting point lower than said first and second aluminium alloys.

Abstract: The invention concerns a brazing sheet comprising a core layer (5) and a braze cladding, said core layer (5) being aluminium or an aluminium alloy, said braze cladding comprising (a) a flux composite layer (2), which flux composite layer comprises a matrix of aluminium or an aluminium alloy, said matrix containing flux particles; (b) at least one filler alloy layer (1) not containing flux particles; and, (c) an aluminium or aluminium alloy layer (3) not containing flux particles, said layer forming the outermost surface of at least one side of the brazing sheet, wherein the flux composite layer (a) is positioned between said filler alloy layer (b) and said aluminium or aluminium alloy layer (c). The invention further concerns a method for its manufacturing, a cladding plate, use of the brazing sheet and a brazed heat exchanger.

Abstract: The invention concerns a method for the manufacturing of a clad sheet product comprising a core layer (6) and at least one cladding layer, the method comprising rolling an assembly of a core layer and at least one cladding layer and reducing the thickness to a desired gauge, the core layer being made of an aluminium alloy, the at least one cladding layer comprising a centre section (2) and at least two edge sections (4, 5) positioned at opposite sides of the centre section (2) along the edges of the at least one cladding layer, the centre section being made of a material being an aluminium alloy or a composite material comprising a matrix of aluminium or an aluminium alloy, the edge sections along (4, 5) the edges being made of a material different from the material of the centre section, wherein the edge sections (4, 5) are cut off during or after the rolling. The invention further concerns a cladding plate useful in the method.

Abstract: Brazing sheet having a core layer made of a first aluminium alloy, attached to one side of said core layer a sacrificial cladding made of a second aluminium alloy, and attached to the other side of said core layer a braze cladding made of a third aluminium alloy. The first aluminium alloy consists of: Si ?0.6 wt %; Fe ?0.7 wt %; Cu 0.4-0.9 wt %; Mn 1.0-1.6 wt %; Mg ?0.2 wt %; Cr 0.05-0.15 wt %; Zr 0.05-0.15 wt %; Ti 0.05-0.15 wt %; other elements ?0.05 wt % each and ?0.2 wt % total; Al balance up to 100 wt %; the second aluminium alloy consists of: Si 0.65-1.0 wt %; Fe ?0.4 wt %; Cu ?0.05 wt %; Mn 1.4-1.8 wt %; Zn 1.5-4.0 wt %; Zr 0.05-0.20 wt %; other elements ?0.05 wt % each and ?0.2 wt % total; Al balance up to 100 wt %. The third aluminium alloy has a melting point lower than said first and second aluminium alloys.

Abstract: Brazing sheet having a core layer made of a first aluminium alloy, attached to one side of said core layer a sacrificial cladding made of a second aluminium alloy, and attached to the other side of said core layer a braze cladding made of a third aluminium alloy. The first aluminium alloy consists of: Si 0.2-1.0 wt %; Fe 0.15-0.9 wt %; Cu 0.2-0.9 wt %; Mn 1.0-1.6 wt %; Mg ?0.3 wt %; Cr 0.05-0.15 wt %; Zr 0.05-0.25 wt %; Ti 0.05-0.25 wt %; other elements ?0.05 wt % each and ?0.2 wt % total; Al balance up to 100 wt %; the second aluminium alloy consists of: Si 0.45-1.0 wt %; Fe ?0.4 wt %; Cu ?0.05 wt %; Mn 1.2-1.8 wt %; Ti ?0.10 wt %, Zn 1.3-5.5 wt %; Zr 0.05-0.20 wt %; other elements ?0.05 wt % each and ?0.2 wt % total; Al balance up to 100 wt %. Third aluminium alloy has a melting point lower than said first and second aluminium alloys.

Abstract: Compact aluminum heat exchanger manufactured from welded flat tubes with internal and/or external fins for cooling of power electronic devices and/or battery cells. The fin insert is prefabricated and inserted into the flat tubes for facilitating of flow turbulence and thus heat dissipation and have fins with undulating or wavelike shape manufactured by sampling or corrugating. Flat tubes are bent and welded along their length on their smaller side facilitating mechanical strength of the tubes. Tubes are manufactured from a core alloy containing 0.3 to 1.8 wt % Mn, 0.25-1.2 wt % Cu, ?0.02 wt % Mg, ?0.01 wt % Si, ?0.05 wt % Fe, ?0.2 wt % Cr, balance aluminum and unavoidable impurities up to 0.05 wt %. Fin inserts are manufactured from aluminum alloy comprising Mn 0-3 wt %, Fe 0-1.5 wt %, Cu 0-1.5 wt %, Mg 0-1.5 wt %, Si 0-1.0 wt %, Zn 0-4 wt %, Ni 0-1 wt % and Zr, Ti, Cr V 0-0.3 wt % each.

Abstract: Compact aluminum heat exchanger manufactured from welded flat tubes with internal and/or external fins for cooling of power electronic devices and/or battery cells. The fin insert is prefabricated and inserted into the flat tubes for facilitating of flow turbulence and thus heat dissipation and have fins with undulating or wavelike shape manufactured by sampling or corrugating. Flat tubes are bent and welded along their length on their smaller side facilitating mechanical strength of the tubes. Tubes are manufactured from a core alloy containing 0.3 to 1.8 wt % Mn, 0.25-1.2 wt % Cu, ?0.02 wt % Mg, ?0.01 wt % Si, ?0.05 wt % Fe, ?0.2 wt % Cr, balance aluminum and unavoidable impurities up to 0.05 wt %. Fin inserts are manufactured from aluminum alloy comprising Mn 0-3 wt %, Fe 0-1.5 wt %, Cu 0-1.5 wt %, Mg 0-1.5 wt %, Si 0-1.0 wt %, Zn 0-4 wt %, Ni 0-1 wt % and Zr, Ti, Cr V 0-0.3 wt % each.