Welder Red Seal · Question
A welder is installing a new structural stiffener onto a beam. The welding procedure specification (WPS) calls for a 6 mm fillet weld. Upon visual inspection, the leg length appears to be insufficient, and the weld metal exhibits a convex profile with a high crown. What is the most likely cause of this combination of defects?
Insufficient welding current or excessive travel speed typically leads to a narrow, ropey bead with insufficient penetration and leg length, often coupled with
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Question: A welder is installing a new structural stiffener onto a beam. The welding procedure specification (WPS) calls for a 6 mm fillet weld. Upon visual inspection, the leg length appears to be insufficient, and the weld metal exhibits a convex profile with a high crown. What is the most likely cause of this combination of defects?
Answer options: ✅ Insufficient welding current
- Excessive travel speed
- Too high welding voltage
- Inadequate preheat
Correct answer: Insufficient welding current
Explanation: Insufficient welding current or excessive travel speed typically leads to a narrow, ropey bead with insufficient penetration and leg length, often coupled with a convex profile due to insufficient fusion and spreading of the weld metal. Too high welding voltage would generally increase bead width and penetration. Inadequate preheat primarily affects cracking susceptibility and not directly weld profile and leg length in this manner.
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