Increasing stick-out will affect penetration in what way?

Increasing stick-out will affect penetration in what way?

• A. Penetration will not be affected.
• B. It will increase penetration.
• C. It will decrease penetration.
• D. It will affect penetration on AC only.

Answer: (C)

Increasing stick-out reduces the heat delivered to the weld pool. With a longer distance from the contact tip to the workpiece, the arc length grows and the wire experiences more electrical resistance, which lowers the current reaching the arc for a given welding voltage. Less current means less heat in the weld zone, so the metal melts less deeply and penetration decreases. In short, longer stick-out lowers heat input and shallowens penetration.

Increasing stick-out reduces the heat delivered to the weld pool. With a longer distance from the contact tip to the workpiece, the arc length grows and the wire experiences more electrical resistance, which lowers the current reaching the arc for a given welding voltage. Less current means less heat in the weld zone, so the metal melts less deeply and penetration decreases. In short, longer stick-out lowers heat input and shallowens penetration.