Rough or Disturbed Solder

摘要

Rough or disturbed solder is a solder fillet that solidified while one or both metals to be joined were vibrating. The result is a weak, non-uniform metallic structure with many micro-cracks.rnPrimary process setup areas to check:rn1. Check conveyor for vibration or "jerky motion."rn2. Removal of the board prior to the solder solidifying.rnOther things to look for in the process:rn3. Solder temperature too low.rn4. Conveyor speed high.rn5. Solder wave height low.rn6. Conveyor vibration.rn7. Solder wave uneven.rn8. Early removal of board.rn9. Solder contaminated.rn10. Board not seated right.