FRICTION STIR WELDING METHOD FOR LAMINATED METAL SHEET, AND METAL SHEET LAMINATE

PROBLEM TO BE SOLVED: To provide a friction stir welding method that enables lamination welding of not only two but three or more metal sheets and that can greatly reduce metallic flash of a weld zone to almost none, and to provide a laminated metal sheet body. SOLUTION: In the friction stir welding...

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Bibliographische Detailangaben
Hauptverfasser:	MOTOHASHI YOSHINOBU, ONDA MAMORU, HAYASHIDA TSUTOMU
Format:	Patent
Sprache:	eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a friction stir welding method that enables lamination welding of not only two but three or more metal sheets and that can greatly reduce metallic flash of a weld zone to almost none, and to provide a laminated metal sheet body. SOLUTION: In the friction stir welding method for welding the same or different kinds of two or more metal sheets being laminated by FSPT (Friction Stir Processing Technique), a hole 9 for friction stir welding is formed which penetrates all layers of laminated metal sheets 8' before a friction stir process is performed. The friction stir process is performed by friction-stirring the laminated metal sheets with each other from inside the hole 9, by producing a frictional heat between the inner face of the hole 9 and a pin 12 of a friction stir welding tool 11 that is inserted into the hole. COPYRIGHT: (C)2011,JPO&INPIT