ALUMINUM ALLOY BRAZING SHEET EXCELLENT IN STRENGTH AND FORMABILITY AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide an aluminum alloy brazing sheet used as a tube material for heat exchangers and the like which achieves thinning wall by improving strength and formability without positively adding Mg.SOLUTION: The aluminum alloy brazing sheet has a core material of an aluminum allo...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHINO MICHIHIDE, KURODA SHU
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BLASTING CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION FERROUS OR NON-FERROUS ALLOYS HEAT EXCHANGE IN GENERAL HEATING LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an aluminum alloy brazing sheet used as a tube material for heat exchangers and the like which achieves thinning wall by improving strength and formability without positively adding Mg.SOLUTION: The aluminum alloy brazing sheet has a core material of an aluminum alloy containing 1.2-1.8% Mn, 0.4-1.3% Si, 0.21-0.5% Fe, and 0.5 to 1.3% Cu, with the balance being Al and unavoidable impurities, wherein one side of the core material is clad with a sacrificial material and the other side is clad with an Al-Si-based or Al-Si-Zn-based brazing filler metal; and the sheet has a thickness of 0.20 mm or less. When the sheet is subjected to heat treatment at 595°C for one minute corresponding to brazing, the resulting sheet has a tensile strength of 170 MPa or more and an average crystal grain diameter of the core material falls in the range of 30-120 μm.