Welding Faults ROOT CONCAVITY


20mm


Description: Shrinkage at the weld root resulting in a deep pit along the weld.


Probable Causes: Shrinkage of molten pool at the weld root, resulting from incorrect weld preparation or insufficient heat input. Also from incorrect welding technique.


Repair: Comment:


Ensure the edges are smooth with no sharp changes in contour.


All sharp edges must be ground smooth in accordance with the specification, prior to surface preparation and application of the coating system.


2-8


Fitz’s Atlas 2™


of coating defects


E SAMPLE


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