Which area is involved when performing suckback repair on a GTAW root?

Which area is involved when performing suckback repair on a GTAW root?

• A. A section with excessive reinforcement
• B. A clean underfilled area
• C. The entire weld bed
• D. The base metal far from the weld

Answer: (A)

Suckback repair targets precisely the part of the weld root where the reinforcement is too high. In GTAW root welding, letting the molten metal retract back toward the joint as it begins to solidify trims the excess height at the root, creating a flatter, flush surface that meets the weld spec. This technique is not used to fix underfilled areas, nor to repair the entire weld bed or material distant from the joint; it’s about removing excess weld metal at the root where reinforcement has built up. So the area involved is the section with excessive reinforcement.

Suckback repair targets precisely the part of the weld root where the reinforcement is too high. In GTAW root welding, letting the molten metal retract back toward the joint as it begins to solidify trims the excess height at the root, creating a flatter, flush surface that meets the weld spec. This technique is not used to fix underfilled areas, nor to repair the entire weld bed or material distant from the joint; it’s about removing excess weld metal at the root where reinforcement has built up. So the area involved is the section with excessive reinforcement.