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Welding Process Application Flashcards

7 cards from real Certified Welder practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Submerged Arc Welding (SAW) is most commonly used for:

    Answer: High-deposition-rate welding of thick, flat, or horizontal joints in production settings

    SAW excels at high-deposition flat and horizontal welding of thick materials, making it ideal for shipbuilding, pressure vessels, and structural fabrication.

  2. When welding aluminum with GMAW, which shielding gas is most commonly used?

    Answer: 100% Argon

    100% Argon is the standard shielding gas for GMAW on aluminum because it provides good arc stability and the cleaning action needed for aluminum oxide removal.

  3. In Resistance Spot Welding (RSW), the weld is formed by:

    Answer: Applying pressure and electrical resistance heat between two overlapping workpieces

    RSW creates a weld nugget through the combination of electrode pressure and the heat generated by electrical resistance at the interface of the workpieces.

  4. What is the purpose of back-purging with argon when welding stainless steel pipe using GTAW?

    Answer: To protect the back side of the root pass from oxidation (sugaring)

    Back-purging fills the pipe interior with argon to shield the root weld from oxygen and nitrogen, preventing oxidation (sugaring) that degrades corrosion resistance.

  5. Which welding process uses a non-consumable electrode and separate filler rod added by hand?

    Answer: GTAW/TIG

    GTAW uses a non-consumable tungsten electrode to maintain the arc while the welder manually feeds filler rod into the weld pool as needed.

  6. Electroslag Welding (ESW) is best described as a process that:

    Answer: Uses a slag blanket to conduct current and provide heat for welding thick vertical joints in one pass

    ESW uses a conductive molten slag pool that generates resistance heat to weld extremely thick vertical joints in a single pass.

  7. When using FCAW-G (gas-shielded flux-cored), the most common shielding gas mixture is:

    Answer: 100% CO2 or 75% Ar / 25% CO2

    FCAW-G typically uses 100% CO2 or a 75/25 Argon/CO2 blend, which provides good penetration and arc stability for carbon steel.