Which is not a fix to arc blow?

Which is not a fix to arc blow?

• A. Increase current (Amperage)
• B. Reposition the work lead
• C. Use magnetic balancing
• D. Move the joint to a different location

Answer: (A)

Arc blow happens when magnetic fields generated by the welding current push the arc off its intended path, causing it to wander along the joint. Increasing the current would strengthen those magnetic fields, making arc blow worse rather than better, so raising amperage is not a remedy. The ways to fix arc blow focus on altering the magnetic environment or the arc’s current path: repositioning the work lead changes the return current loop and can reduce the destabilizing magnetic field around the arc; using magnetic balancing introduces opposing magnetic forces to cancel out the stray field and stabilize the arc; moving the joint to a location where the magnetic influence is weaker or more favorable also helps the arc stay on track.

Arc blow happens when magnetic fields generated by the welding current push the arc off its intended path, causing it to wander along the joint. Increasing the current would strengthen those magnetic fields, making arc blow worse rather than better, so raising amperage is not a remedy.

The ways to fix arc blow focus on altering the magnetic environment or the arc’s current path: repositioning the work lead changes the return current loop and can reduce the destabilizing magnetic field around the arc; using magnetic balancing introduces opposing magnetic forces to cancel out the stray field and stabilize the arc; moving the joint to a location where the magnetic influence is weaker or more favorable also helps the arc stay on track.