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Welder Red Seal · Question

A welder is setting up a GMAW process for welding 6 mm thick mild steel in the flat position. The fabrication requires high deposition rates and a smooth, spatter-free weld bead appearance. Which transfer mode would be most suitable for this application?

Spray transfer is characterized by a continuous stream of fine molten droplets transferring from the electrode to the weld puddle, resulting in high deposition

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Question: A welder is setting up a GMAW process for welding 6 mm thick mild steel in the flat position. The fabrication requires high deposition rates and a smooth, spatter-free weld bead appearance. Which transfer mode would be most suitable for this application?

Answer options: ✅ Spray transfer

  • Short-circuit transfer
  • Globular transfer
  • Pulsed short-circuit transfer

Correct answer: Spray transfer

Explanation: Spray transfer is characterized by a continuous stream of fine molten droplets transferring from the electrode to the weld puddle, resulting in high deposition rates, minimal spatter, and a smooth bead appearance, ideal for flat and horizontal positions on thicker material. Short-circuit transfer is better for thinner materials and all positions but has lower deposition and more spatter. Globular transfer is generally undesirable due to excessive spatter and an unstable arc.

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