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Welding Processes & Techniques 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. When performing an uphill vertical weld with SMAW, the welder should use which technique to control the molten pool?

    Answer: A weaving motion with brief pauses at the toes

    Uphill vertical welding uses a weaving pattern with brief pauses at the toes to allow the puddle to fuse and prevent sagging.

  2. Which welding position is designated as '2G' according to AWS classification?

    Answer: Horizontal groove weld

    The '2G' designation indicates a horizontal groove weld position where the axis of the weld is horizontal.

  3. What is the purpose of a 'hot pass' in multi-pass pipe welding?

    Answer: A pass immediately after the root pass to burn out inclusions and tie in the toes

    The hot pass follows the root pass immediately, using higher heat to burn out trapped slag and gas and ensure proper fusion at the root.

  4. In GMAW, what effect does increasing wire feed speed have?

    Answer: Increases welding current and increases heat input

    In GMAW, the wire feed speed directly controls amperage; faster wire feed increases current draw and raises heat input.

  5. Which shielding gas is commonly used for GMAW of stainless steel to prevent carbide precipitation and improve arc stability?

    Answer: Tri-mix (He/Ar/CO2)

    A tri-mix of helium, argon, and a small percentage of CO2 is commonly used for stainless steel GMAW to provide good arc stability and prevent sensitization.

  6. What is 'arc blow' and which current type most commonly causes it?

    Answer: Magnetic deflection of the arc, most common with DC welding

    Arc blow is the deflection of the welding arc caused by magnetic fields, and it most commonly occurs with DC welding on ferromagnetic materials.

  7. When welding with GTAW on thin stainless steel sheet, why might the welder use a trailing gas shield?

    Answer: To protect the hot weld metal from oxidation after the torch passes

    A trailing gas shield directs inert gas over the weld bead as the torch moves forward, preventing oxidation (sugaring) of the hot stainless steel.