Welder Red Seal · Question
When using GMAW with a 98% Ar / 2% O2 shielding gas on stainless steel, which metal transfer mode is most suitable for out-of-position welding to maintain control?
Conventional spray transfer has a fluid weld puddle that is difficult to control against gravity. Pulsed-spray transfer provides the benefits of spray (low spat
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Question: When using GMAW with a 98% Ar / 2% O2 shielding gas on stainless steel, which metal transfer mode is most suitable for out-of-position welding to maintain control?
Answer options:
- Conventional spray transfer
- Globular transfer
- Short-circuiting transfer ✅ Pulsed-spray transfer
Correct answer: Pulsed-spray transfer
Explanation: Conventional spray transfer has a fluid weld puddle that is difficult to control against gravity. Pulsed-spray transfer provides the benefits of spray (low spatter, good fusion) but with a lower average heat input, allowing the puddle to freeze more quickly, making it manageable for vertical and overhead positions.
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