Definition of Arc Blow in Welding Arc blow is a phenomenon that occurs during the welding process when the electric arc deviates from its intended path, leading to an unstable and unpredictable arc. This deviation is primarily caused by the interaction of magnetic fields generated by the welding current and the workpiece. Arc blow can result in poor weld … [Read more...] about Arc Blow in Welding: Causes, Effects, and Prevention Techniques