METAL CYLINDRICAL BODY, AND METHOD FOR MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To provide a long metal cylindrical body which is increased in size and excellent in pressure resistance. SOLUTION: The metal cylindrical body is formed of port hole extruded tube 2 in which a plurality of preform sections 2b are welded to each other by a plurality of welded se...

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Bibliographische Detailangaben
1. Verfasser:	OSAME YASUHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL BASIC ELECTRIC ELEMENTS CABLES CLADDING OR PLATING BY SOLDERING OR WELDING CONDUCTORS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELECTRICITY INSULATORS MACHINE TOOLS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PUNCHING METAL SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a long metal cylindrical body which is increased in size and excellent in pressure resistance. SOLUTION: The metal cylindrical body is formed of port hole extruded tube 2 in which a plurality of preform sections 2b are welded to each other by a plurality of welded sections 2a over the entire length. The base metal of the port hole extruded tube 2 is refined at every welded section 2a to refine grains. Preferably, the port hole extruded tube 2 is refined through friction stirring and joining by using a probe of a friction stirring and joining tool. COPYRIGHT: (C)2005,JPO&NCIPI