Cause: Poor Weld Access

Weld access is ability of the tip/electrode to reach the intended face of the stamping and/or fastener. The part design or electrode choice may affect access and weld quality.

Description 

The metal being welded does not have intimate contact in the area to be welded. The application of welding force and current causes one or both sheets to distort.

Detection 

Significance 

Quality, Workplace Issues, Cost, Downtime, Maintenance, Throughput (cycle time; PPH), are all potentially affected by this condition.

Subordinate Causes

  • Joint design; design with built-in gap
  • Fit-up gap from part dimensional variation
  • Non-matching panel contour
  • Part damage due to material shipping and handling
  • Geometry, design, motion, and operating condition of locators
  • Design and operating condition of clamps

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