Arc blow

Arc blow is the, usually unwanted, deflection of the arc during arc welding. Arc blow is the, usually unwanted, deflection of the arc during arc welding. There are two types of arc blow commonly known in the electric welding industry: magnetic and thermal. Magnetic arc blow or 'arc wander' is the deflection of welding filler material within an electric arc deposit by a buildup of magnetic force surrounding the weld pool. Magnetic arc blow can occur because of: