What is the primary purpose of test welds performed before doing structural welds?

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Multiple Choice

What is the primary purpose of test welds performed before doing structural welds?

Test welds are done to verify proper settings and weld strength before tackling the actual structural welds. They serve as a diagnostic sample to confirm that current, voltage, travel speed, filler material, shielding gas (if used), joint fit-up, and material thickness produce the required penetration, fusion, and bead quality. If the test weld meets the acceptance criteria, you can proceed with confidence; if not, you adjust parameters until the weld quality is demonstrated. They aren’t about saving time, checking paint coverage, or determining heat-treat requirements.

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