Method of brazing aluminum or aluminum alloy materials and aluminum alloy brazing sheet

A method of brazing aluminum or aluminum alloy materials, which comprises: keeping one side of a clad surface of a filler alloy of an aluminum alloy brazing sheet inside a brazing assembly; forming the brazing sheet to constitute a hollow structure; and carrying out brazing on the inside of the form...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DOKO TAKEYOSHI, YANAGAWA YUTAKA, HASEGAWA YOSHIHARU, MIYAJI HARUHIKO, HIRAO KOUJI, NISHIMURA SHINYA
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BLASTING 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 GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEAT EXCHANGE IN GENERAL HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT HEATING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A method of brazing aluminum or aluminum alloy materials, which comprises: keeping one side of a clad surface of a filler alloy of an aluminum alloy brazing sheet inside a brazing assembly; forming the brazing sheet to constitute a hollow structure; and carrying out brazing on the inside of the formed hollow structure without applying flux in an inert gas atmosphere, wherein said sheet has an aluminum or aluminum alloy core clad with a filler alloy layer composed of an Al-Si-based alloy on one side or both sides thereof, and contains Mg at least in a layer constituting the brazing sheet other than the filler alloy layer. An aluminum alloy brazing sheet, wherein one side or both sides of the aluminum or aluminum alloy core material is clad with the Al-Si-based filler alloy, and a cladding thickness a ( mu m) of the filler alloy applied on the inside of the hollow structure, a Mg content X (mass%) of the core material, and a Mg content Y (mass%) of the filler alloy satisfy relationships of (X+Y)≤a/60+0.5 and X>Y.