Abstract: Described herein is a brazed heat exchanger comprising at least one header, manifold and/or tube structured to hold a coolant or refrigerant; said header, manifold, and/or tube component including a plurality of apertures; a plurality of substantially parallel fluid-carrying tubes each extending substantially perpendicular from one of said plurality of apertures in said header plate, manifold, and/or tube component and structured to receive said coolant or refrigerant therethrough; and a plurality of corrugated aluminium alloy fins being in thermal communication with said plurality of fluid-carrying tubes and structured to transfer heat away therefrom. The header, manifold, and/or tube component is made from an aluminium alloy sheet material comprising, in wt. %: Mn 1.4%-1.8%; Si up to 0.7%; Fe up to 0.7%; Mg up to 0.30%; Cu up to 0.10%; Cr up to 0.25%; Zr up to 0.25%; Zn up to 0.50%; Ti up to 0.2%; balance aluminium and inevitable impurities.

Abstract: Described herein is an aluminium alloy multi-layered brazing sheet product for brazing in an inert-gas atmosphere without a flux that includes a core layer made of a 3xxx alloy that includes <0.2 wt.% Mg, and that provides a covering clad layer that includes 2-6 wt.% Si on one or both sides of said 3xxx alloy core layer and a Al—Si brazing clad layer that includes 7-13 wt.% Si positioned between the 3xxx alloy core layer and the covering clad layer, wherein the covering clad layer has a thickness X1 and the Al—Si brazing clad layer has a thickness X2 and wherein X2 ? 2X1. Also described herein is the use of an aluminium alloy multi-layered brazing sheet product in a flux-free controlled atmosphere brazing (CAB) operation to produce a heat exchanger apparatus.

Abstract: Described herein is an aluminium alloy multi-layered brazing sheet product for brazing in an inert-gas atmosphere without a flux, comprising a core layer made of a 3xxx alloy comprising 0.20-0.75 wt. % Mg, and provided with a covering clad layer comprising 2-5 wt. % Si on one or both sides of said 3xxx alloy core layer and a Al—Si brazing clad layer comprising 7-13 wt. % Si positioned between the 3xxx alloy core layer and the covering clad layer, wherein the covering clad layer has a thickness X1 and the Al—Si brazing clad layer has a thickness X2 and wherein X2?2X1. The invention further relates to the use of an aluminium alloy multi-layered brazing sheet product in a fluxfree controlled atmosphere brazing (CAB) operation to produce a heat exchanger apparatus.

Abstract: The invention relates to a multi-layered brazing sheet material comprising of an aluminum core alloy layer provided with a first brazing clad layer material on one or both sides of the aluminum core layer and at least one second brazing clad layer material positioned between the aluminum core alloy layer and the first brazing clad layer material.

Abstract: A method and apparatus for manufacturing a brazed heat exchanger. The method includes the steps of: assembling the heat exchanger components to form at least one unbrazed heat exchanger core in a core builder machine; without removing the at least one heat exchanger core from the core builder machine, enclosing the heat exchanger core with a brazing tool arrangement adapted to form a chamber, optionally, evacuating the chamber and/or filling the chamber with a controlled atmosphere; brazing the heat exchanger core in the chamber to form a brazed heat exchanger.

Abstract: The invention relates to a method of manufacturing a brazing sheet product having a core layer of a 3xxx-series aluminium alloy clad on one or both sides with a 4xxx-series aluminium alloy brazing layer, the method comprising the steps of: (i) casting a rolling ingot of the core layer of a 3xxx-series aluminium alloy having the following composition, in wt. %: Mn 0.5-1.8, Si?1.5, Fe?0.7, Cu?1.5, Mg?1.0, Cr?0.25, Zr?0.25, Ti?0.25, Zn?0.5, balance impurities and aluminium; (ii) hot rolling of the rolling ingot to a hot rolled sheet having thickness of 2.5-10 mm; (iii) cold rolling of the hot rolled sheet to a gauge of 0.1-4 mm, optionally with an intermediate annealing step during the cold rolling operation; (iv) soft annealing to recrystallize the microstructure of the aluminium sheet, preferably at a temperature in the range of 250° C.-450° C.

Abstract: A multi-layered brazing sheet product having an aluminium core alloy layer provided on one or both sides with a brazing clad layer material, and an inter-layer material positioned between the aluminium core alloy layer and at least one of the brazing clad layer materials, wherein the brazing layer material(s) is made from an 4xxx-series aluminium alloy having 5% to 15% Si and up to 3% Mg, and wherein the inter-layer material is made from a 1xxx-series aluminium alloy having a purposive addition of Mg of 0.10% to 2.0%. The invention relates also to the use of the brazing sheet product in a fluxless controlled atmosphere brazing process.

Abstract: The invention relates to a rolled fin stock material from an 3xxx-series aluminium alloy comprising, in wt. %, Mn 0.7% to 2.0%, Si 0.4% to 1.5%, Zn up to 4%, Fe up to 0.8%, Zr 0.02% to 0.40%, Sc 0.01% to 0.6%, Ni up to 0.3%, Cu up to 0.5%, Mg up to 2%, Cr up to 0.3%, Ti up to 0.3%, the balance aluminium and tolerable impurities. The invention further relates to a brazed assembly of components incorporating such a fin stock material.

Abstract: The invention relates to a brazed heat exchanger incorporating an aluminium alloy baseplate and wherein the baseplate is made from an aluminium alloy having a composition, in wt. %, of: Mn 0.8-1.8, Cu 0.15-1.20, Si 0.25-1.30, Mg 0.10-0.60, Fe?0.8, Zn?0.3, Ti?0.20, Cr?0.25, Zr?0.25, balance aluminium and impurities.

Abstract: The invention relates to a shaped, small diameter brazing preform for brazing components to one another, the preform comprising a length of aluminium-based filler alloy wire having a continuous, uniform cavity in a centre of the preform along its length, and a brazing flux material retained within the cavity, and wherein the aluminium-based filler alloy has a composition comprising, in wt. %, Si 7-14%, Zn 0.5-%, Cu 1.0-2.0%, balance aluminium, and having a liquidus temperature in a range of 560° C. to 585° C.

Abstract: Brazing sheet material having an aluminium core alloy layer, a first brazing clad layer on one face of the core layer and an inter-layer between the core layer and the first clad layer material. The core layer of aluminium alloy including, up to 0.6% Si, up to 0.45% Fe, 0.6% to 1.25% Cu, 0.6% to 1.4% Mn, 0.08% to 0.4% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.25% Ti, up to 0.3% Zn, balance aluminium. The first clad layer is made from 4xxx-series aluminium alloy having 6% to 14% Si and up to 2% Mg, balance aluminium. The inter-layer is made from 3xxx-series aluminium alloy including, up to 0.4% Si, up to 0.5% Fe, up to 0.8% Cu, 0.4% to 1.1% Mn, up to 0.04% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.25% Ti, up to 0.3% Zn, balance aluminium.

Abstract: A method and apparatus for manufacturing a brazed heat exchanger. The method includes the steps of: assembling the heat exchanger components to form at least one unbrazed heat exchanger core in a core builder machine; without removing the at least one heat exchanger core from the core builder machine, enclosing the heat exchanger core with a brazing tool arrangement adapted to form a chamber, optionally, evacuating the chamber and/or filling the chamber with a controlled atmosphere; brazing the heat exchanger core in the chamber to form a brazed heat exchanger.

Abstract: A multi-layered brazing sheet material including an aluminum core alloy layer, a brazing clad layer material on one face of the core layer, an inter-layer between the core layer and brazing clad layer material, and a water-side layer on the other face of the core layer. The core layer made from aluminum alloy having, in wt. %, up to 0.6% Si, up to 0.45% Fe, 0.6% to 1.25% Cu, 0.6% to 1.4% Mn, 0.08% to 0.4% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.2% Ti, up to 0.3% Zn, balance aluminum and impurities. The brazing layer made from aluminum alloy having 6% to 14% Si and up to 2% Mg, balance aluminum and impurities. The inter-layer made from 1xxx-series aluminum alloy. The water-side layer made from 3xxx-series aluminum alloy having 0.5% to 1.8% Mn and 1% to 3.5% Zn.

Abstract: A multi-layered brazing sheet product having an aluminium core alloy layer provided on one or both sides with a brazing clad layer material, and an inter-layer material positioned between the aluminium core alloy layer and at least one of the brazing clad layer materials, wherein the brazing layer material(s) is made from an 4xxx-series aluminium alloy having 5% to 15% Si and up to 3% Mg, and wherein the inter-layer material is made from a 1xxx-series aluminium alloy having a purposive addition of Mg of 0.10% to 2.0%. The invention relates also to the use of the brazing sheet product in a fluxless controlled atmosphere brazing process.

Abstract: Brazing sheet material having an aluminium core alloy layer, a first brazing clad layer on one face of the core layer and an inter-layer between the core layer and the first brazing clad layer material. The core layer of aluminium alloy including, up to 0.6% Si, up to 0.45% Fe, 0.6% to 1.25% Cu, 0.6% to 1.4% Mn, 0.08% to 0.4% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.25% Ti, up to 0.3% Zn, balance aluminium. The first clad layer is made from 4xxx-series aluminium alloy having 6% to 14% Si and up to 2% Mg, balance aluminium. The inter-layer is made from 3xxx-series aluminium alloy including, up to 0.4% Si, up to 0.5% Fe, up to 0.8% Cu, 0.4% to 1.1% Mn, up to 0.04% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.25% Ti, up to 0.3% Zn, balance aluminium.

Abstract: Multilayered brazing sheet including aluminium core alloy layer of 3xxx-series aluminium alloy having, in wt. %, up to 0.4% Si, up to 0.5% Fe, 0.4% to 0.75% Cu, 0.6% to 1.1% Mn, up to 0.07% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.2% Ti, up to 0.15% Zn, balance aluminium and impurities, first and second brazing clad layers on opposed faces of core layer, and an inter-layer on either or both sides of core layer between the core layer and first or second brazing clad layer. The first and second brazing layers are 4xxx-series aluminium alloy. The inter-layer(s) is 3xxx-series aluminium alloy, having, in wt. %, up to 0.6% Si, 0.2% to 0.7% Fe, up to 0.2% Cu, 1.0% to 1.6% Mn, up to 0.25% Zn, up to 0.04% Mg, up to 0.2% Cr, up to 0.2% Zr, up to 0.07% Ti, balance aluminium and impurities.

Abstract: Multilayered brazing sheet material including an aluminum core alloy layer having a first brazing clad layer material on one face of the core layer and a second brazing clad layer material on the other face of the core material, and an inter-layer between the core layer and the first brazing clad layer material, wherein the core layer is 3xxx-series aluminum alloy having, in wt. %, up to 0.4% Si, up to 0.5% Fe, 0.4% to 0.75% Cu, 0.6% to 1.1% Mn, up to 0.04% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.2% Ti, up to 0.15% Zn, balance aluminum and impurities, wherein the first brazing layer and the second brazing layer are 4xxx-series aluminum alloy having 7% to 14% Si and up to 2% Mg, balance aluminum and impurities, and wherein the inter-layer is aluminum alloy of the 1xxx-series alloys.

Abstract: Multilayered brazing sheet including aluminium core alloy layer of 3xxx-series aluminium alloy having, in wt. %, up to 0.4% Si, up to 0.5% Fe, 0.4% to 0.75% Cu, 0.6% to 1.1% Mn, up to 0.07% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.2% Ti, up to 0.15% Zn, balance aluminium and impurities, first and second brazing clad layers on opposed faces of core layer, and an inter-layer on either or both sides of core layer between the core layer and first or second brazing clad layer. The first and second brazing layers are 4xxx-series aluminium alloy. The inter-layer(s) is 3xxx-series aluminium alloy, having, in wt. %, up to 0.6% Si, 0.2% to 0.7% Fe, up to 0.2% Cu, 1.0% to 1.6% Mn, up to 0.25% Zn, up to 0.04% Mg, up to 0.2% Cr, up to 0.2% Zr, up to 0.07% Ti, balance aluminium and impurities.

Abstract: A multi-layered brazing sheet material including an aluminium core alloy layer, a brazing clad layer material on one face of the core layer, an inter-layer between the core layer and brazing clad layer material, and a water-side layer on the other face of the core layer. The core layer made from aluminium alloy having, in wt. %, up to 0.6% Si, up to 0.45% Fe, 0.6% to 1.25% Cu, 0.6% to 1.4% Mn, 0.08% to 0.4% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.2% Ti, up to 0.3% Zn, balance aluminium and impurities. The brazing layer made from aluminium alloy having 6% to 14% Si and up to 2% Mg, balance aluminium and impurities. The inter-layer made from 1xxx-series aluminium alloy. The water-side layer made from 3xxx-series aluminium alloy having 0.5% to 1.8% Mn and 1% to 3.5% Zn.

Abstract: Multilayered brazing sheet material including an aluminium core alloy layer having a first brazing clad layer material on one face of the core layer and a second brazing clad layer material on the other face of the core material, and an inter-layer between the core layer and the first brazing clad layer material, wherein the core layer is 3xxx-series aluminium alloy having, in wt. %, up to 0.4% Si, up to 0.5% Fe, 0.4% to 0.75% Cu, 0.6% to 1.1% Mn, up to 0.04% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.2% Ti, up to 0.15% Zn, balance aluminium and impurities, wherein the first brazing layer and the second brazing layer are 4xxx-series aluminium alloy having 7% to 14% Si and up to 2% Mg, balance aluminium and impurities, and wherein the inter-layer is aluminium alloy of the 1xxx-series alloys.