WELDING METHOD AND BACK SHIELD DEVICE

PROBLEM TO BE SOLVED: To provide a welding method capable of appropriately suppressing oxidation of the inner surface of a welded portion in piping.SOLUTION: The welding method according to the embodiment comprises an arrangement step, a space formation step, an inert gas filling step, and a welding...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	NIKI TAKAHIRO, OTSUKI MASAHIKO, OGAWA TAKASHI, KAMIMURA KENJI, NAKAMURA SHINICHIRO, YOSHIDA MITSUAKI
Format:	Patent
Sprache:	eng ; jpn
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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