METHOD FOR CONTROLLING ELECTRIC CURRENT IN NON-CONSUMABLE ELECTRODE ARC WELDING

PROBLEM TO BE SOLVED: To automatically control a welding electric current Iw to be a proper value while manually adjusting a welding speed and a feed speed of a filler wire 4 to make a weld quality uniform corresponding to a temperature rise of a base material due to the progress of a welding proces...

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1. Verfasser:	UESONO TOSHIRO
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 automatically control a welding electric current Iw to be a proper value while manually adjusting a welding speed and a feed speed of a filler wire 4 to make a weld quality uniform corresponding to a temperature rise of a base material due to the progress of a welding process in non-consumable electrode arc welding manually carried out using the filler wire 4. SOLUTION: In a method for controlling an welding current in non-consumable electrode arc welding carried out by manually feeding the filler wire 4 to a molten pool, wire voltage Vw between the filler wire 4 and the base material 2 is detected, and a feed speed Fw of the filler wire 4 is calculated based on the wire voltage Vw, and the welding current Iw is automatically changed according to the feed speed Fw of the filler wire 4. COPYRIGHT: (C)2007,JPO&INPIT