Patent ID: 7045741

Claim:
An electric arc welding device operable to butt weld a metallic workpiece having an elongated face onto a metallic counterpiece, the device comprising: a magnetic field generating device operable to produce a magnetic field with the metallic workpiece oriented substantially transverse to the metallic counterpiece, the magnetic field generating device including: a pair of substantially U-shaped yokes each having an upper and a lower leg separated by a connection piece, the yokes positioned substantially mirror image about the metallic workpiece having the lower legs extending toward each other and the upper legs extending toward each other; and at least a first coil longitudinally and circumferentially looped about one of the connection pieces and oriented substantially parallel to the metallic workpiece; a voltage supply device connectable to the coil operably generating an electric arc between the elongated face of the workpiece and the counterpiece and substantially between the lower legs of the yokes; and a magnetic field component oriented transverse to a length of the elongated face and transverse to an electric arc length; wherein the electric arc operably moves in a direction of the length of the elongated face.