What might happen if arc blow occurs during welding?

If arc blow occurs during welding, the most evident effect is that the weld may become uneven. Arc blow refers to the deflection of the welding arc due to magnetic fields or other external influences, which can cause the arc to stray away from the intended path. This deviation can lead to inconsistent penetration, uneven bead width, and overall poor weld quality.

When the arc is disrupted in this way, the operator may struggle to maintain a steady hand and consistent movement, further contributing to an uneven weld. Proper grounding, adjusting the welding parameters, or changing the electrode position may be necessary to minimize or eliminate arc blow, thereby ensuring a more uniform and high-quality weld.