6 Welding Defects. 1 Weld Crack 2 Undercut 3 Spatter 4 Porosity 5 Overlap 6 Crater b. Incorrect profile Crater Cracks Spatter and surface porosity Incomplete filled groove Distortion Blowholes and internal porosity Cracks Inclusions Lack of fusion Incomplete fusion.
Weldings defects are classified into the following types. 1 Slag Inclusion 2 Incomplete Fusion 3 Necklace cracking 4 Incompletely filled groove or incomplete penetration 20 External Welding Defects. Reduction of non-production idle hours.
Increase in SAW welding machine process yield.
Surface Cracks Undercut Porosity Overlaps Crater Underfill Spatters Excessive penetration Arc Strike etc are examples of external welding defects. Lack of penetration or excess penetration 3. External Welding Defects. Incomplete penetration Slag inclusion.