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Welder Red Seal · Question

During a performance qualification test, a welder is required to complete a 6G pipe weld using E7018 electrode. The welding inspector points out that the welder is consistently struggling with excessive undercut on the top-side of the pipe and a drooping weld puddle on the bottom. What adjustments should the welder consider specifically for the 6G position?

Excessive undercut on the top and a drooping puddle on the bottom in a 6G pipe weld indicate issues with heat management and gravity. Reducing amperage can help

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Question: During a performance qualification test, a welder is required to complete a 6G pipe weld using E7018 electrode. The welding inspector points out that the welder is consistently struggling with excessive undercut on the top-side of the pipe and a drooping weld puddle on the bottom. What adjustments should the welder consider specifically for the 6G position?

Answer options: ✅ Reduce the amperage setting and refine electrode manipulation to account for gravity's effect around the pipe.

  • Increase the amperage to ensure adequate penetration through the thick pipe schedule.
  • Switch to a larger diameter electrode to increase deposition rate.
  • Maintain current amperage but increase travel speed significantly around the entire pipe.

Correct answer: Reduce the amperage setting and refine electrode manipulation to account for gravity's effect around the pipe.

Explanation: Excessive undercut on the top and a drooping puddle on the bottom in a 6G pipe weld indicate issues with heat management and gravity. Reducing amperage can help control the fluidity of the weld puddle, preventing both undercut (by allowing the puddle to fill the joint) and drooping. Refined electrode manipulation, such as adjusting the work angle and travel speed for each section of the pipe, is critical to counteract the varying gravitational effects. Increasing amperage or electrode diameter would likely worsen the issues, and constant high travel speed might lead to lack of fusion.

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