Welder Material & Equipment Handling Flashcards
7 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Welder Material & Equipment Handling flashcards as text
When selecting a wire brush for post-weld cleaning, which material is most appropriate for stainless steel welds?
Answer: Stainless steel wire brush
A dedicated stainless steel wire brush must be used on stainless steel welds to prevent carbon steel contamination that causes corrosion.
What is the maximum acetylene cylinder pressure that should ever be used in oxyacetylene welding?
Answer: 15 psi
Acetylene becomes unstable and can decompose explosively at pressures above 15 psi, so working pressure must never exceed this limit.
A welder needs to weld T-1 (high-strength low-alloy) structural steel. Which electrode characteristic is most critical to select?
Answer: Low-hydrogen classification to prevent underbead cracking
High-strength low-alloy steels like T-1 are susceptible to hydrogen-induced cracking, making low-hydrogen electrode selection mandatory.
What does it mean when a GMAW wire electrode package label shows 'E71T-1C'?
Answer: It is a flux-cored wire for all-position welding using CO2 shielding gas
E71T-1C designates a flux-cored electrode for all-position welding (1) with CO2 shielding gas (C), suitable for single and multi-pass carbon steel welds.
What is the proper method for disposing of electrode stubs (used SMAW electrodes) in the field?
Answer: Collect them in a designated metal container after they have fully cooled
Electrode stubs must be collected in a metal container after fully cooling to prevent fire hazards and maintain a safe, organized work area.
Which condition makes it necessary to recondition (re-dry) low-hydrogen electrodes before use?
Answer: The electrodes were exposed to ambient air for more than the time specified by the manufacturer
Low-hydrogen electrodes absorb moisture from the air and must be reconditioned per manufacturer's time limits to restore their low-hydrogen properties.
When setting up a welding positioner or fixture, what is the primary safety consideration before beginning to weld?
Answer: Verify the workpiece is securely clamped and the positioner is properly grounded
The workpiece must be securely clamped to prevent movement during welding, and the positioner must be properly grounded to ensure safe current return path.