ABSTRAKT

Transferred arcs are widely used to melt metal. High pressure of the arc root at the metal surface often causes the blowing off the metal from the molten pool. This study theoretically assesses the pressure distribution on the anode surface when the arc is scanned using an external alternating magnetic field. By imposing a magnetic field, the time-averaged pressure of the arc on the anode decreases with increased magnetic flux density. In a magnetic field with a triangular waveform, the pressure distribution is not constant along the oscillating motion. Variation of the time-averaged pressure decreases with increased distance from the center.