WELDING METHOD FOR PREVENTING GENERATION OF BLOW-HOLE

PURPOSE:To stabilize an arc and to prevent a blow-hole from generating in a weld metal by moving and exhausting an atmospheric gas of the time of welding to match a movement of a welding torch from the back side of a weld line, when executing a gas shield are welding of a surface treated steel plate...

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Bibliographische Detailangaben
Hauptverfasser:	AMASAKA TADAO, KUSUMOTO SHOGO, MATSUDAIRA YASUTO, IMAEDA TOSHIHIKO, TAKAGI RYUHEI
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:	PURPOSE:To stabilize an arc and to prevent a blow-hole from generating in a weld metal by moving and exhausting an atmospheric gas of the time of welding to match a movement of a welding torch from the back side of a weld line, when executing a gas shield are welding of a surface treated steel plate, etc. CONSTITUTION:In case when a rustproof surface treated steel plate PL by a galvanizing layer and a steel plate Pu which is not subjected to surface treatment are brought to a gas shield arc welding by a welding torch T, a gap G is provided between both the steel plates, and as the torch T moves, an exhaust device E having an exhaust port is moved in the same direction at the same speed. At the same time, by setting an aim angle alpha of a welding torch 2 to