What is meaning of lack of Fusion in Welding? |

What is meaning of lack of Fusion in Welding?

  1. LACK OF FUSION

“Lack of complete melting/ fusion of some portion of the weld metal in a joint”

  • May be at the root, sides or between two runs.
  • Reduces the strength of welds & makes welded structures unreliable.

MGA16

Cause:

  • Low welding current
  • Excess welding speed
  • Unfavourable heat input

Prevention:

  • Maintain proper current & welding speed
  • Proper cleaning of each bead.

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