When performing an arc spot welding procedure qualification test, what are the visual acceptance criteria?

When performing an arc spot welding procedure qualification test, what are the visual acceptance criteria?

• A. No cracks, no porosity, and welds meeting size/contour limits
• B. No cracks only
• C. No porosity only
• D. Only weld appearance matters

Answer: (A)

Visual acceptance criteria for an arc spot welding procedure qualification test focus on two safety-critical defect types plus dimensional compliance. The weld must show no cracks and no porosity, and it must meet the specified size and contour limits. Cracks can indicate brittle failure and may grow under service loads, while porosity reveals trapped gas that weakens the weld. Even if a weld looks clean, failing to meet the size or contour requirements means the joint may not have the intended strength or fusion. That’s why all three conditions are required. The other options miss important aspects: cracks alone ignores porosity and dimensions, porosity alone ignores cracks and size, and judging only appearance ignores possible internal defects and exact dimensional limits.

Visual acceptance criteria for an arc spot welding procedure qualification test focus on two safety-critical defect types plus dimensional compliance. The weld must show no cracks and no porosity, and it must meet the specified size and contour limits. Cracks can indicate brittle failure and may grow under service loads, while porosity reveals trapped gas that weakens the weld. Even if a weld looks clean, failing to meet the size or contour requirements means the joint may not have the intended strength or fusion. That’s why all three conditions are required. The other options miss important aspects: cracks alone ignores porosity and dimensions, porosity alone ignores cracks and size, and judging only appearance ignores possible internal defects and exact dimensional limits.