Practice Test Geeks(SAW) Submerged Arc Welding Certification Practice Test
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Transmission & Drivetrain Systems Flashcards

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

Read the first 7 Transmission & Drivetrain Systems flashcards as text

  1. SAW is being used to hard-surface a transfer case output yoke. The ideal interpass temperature limit is set to prevent:

    Answer: Excessive grain growth in the heat-affected zone

    Allowing excessive interpass temperature causes grain coarsening in the HAZ, reducing toughness and fatigue life of the yoke.

  2. Which condition indicates that recovered SAW flux is no longer suitable for reuse on drivetrain components?

    Answer: Presence of fused slag particles

    Fused slag particles in recovered flux cannot melt uniformly and will create inclusions and arc instability in subsequent welds.

  3. A planetary gear carrier is rebuilt with multiple SAW passes. Undercut is observed at the weld toes. The primary corrective action is:

    Answer: Reduce arc voltage

    Reducing arc voltage decreases arc width and energy, narrowing the weld bead and eliminating the undercut at the fusion line.

  4. For SAW welding of carburized drivetrain components, why is the carburized case typically ground off before welding?

    Answer: To prevent high-carbon weld metal dilution causing brittleness

    The high-carbon carburized layer, if melted into the weld pool, elevates carbon content and promotes crack-susceptible martensite in the deposit.

  5. When performing SAW on a large ring gear, the use of run-off tabs at weld end locations primarily prevents:

    Answer: Crater cracks and porosity at the weld termination

    Run-off tabs allow the crater to form and solidify outside the structural weld, preventing the shrinkage cracking and porosity common at weld stops.

  6. In SAW of a drive axle flange, magnetic arc blow causes the arc to deflect away from the joint. The best corrective measure is:

    Answer: Switching from DC to AC power

    AC power constantly reverses current direction, preventing the buildup of a fixed magnetic field that causes arc blow on DC welding.

  7. Which SAW wire classification is most appropriate for welding low-alloy, high-strength steel drivetrain components requiring 80 ksi minimum tensile strength?

    Answer: EA2

    EA2 is an alloy wire containing manganese and molybdenum that produces weld metal meeting 80 ksi+ tensile requirements for high-strength low-alloy (HSLA) steels.