Welding Defects

WELDING INSPECTORS WORKSHOP

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WELDING INSPECTION Welding inspection is used to verify that welding has been performed in accordance with the appropriate welding procedure and that the result has produced a compliant weld Welding inspection techniques include visual inspection, non-destructive and destructive testing as well as audits of the process A defect is a condition of the weld that is out-with the boundaries of acceptability in relation to the particular standard 2

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Linear Misalignment

Manual Metal

Offset or Mismatch

Arc Welding MMA

High-low

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Offset or Mismatch

Manual Metal

with lack of Root

Arc Welding MMA

Fusion

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Cap concavity or insufficient fill

Manual Metal Arc Welding MMA

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Excessive root penetration

Manual Metal Arc Welding MMA

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External Undercut

Manual Metal Arc Welding MMA

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Root Undercut

Manual Metal Arc Welding MMA

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Root Concavity (suck back)

Manual Metal Arc Welding MMA

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Root burn-through

Manual Metal Arc Welding MMA

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Incomplete or lack of root penetration

Manual Metal Arc Welding MMA

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Inter-pass Slag Inclusions

Manual Metal Arc Welding MMA

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Elongated Slag lines (wagon tracks)

Manual Metal Arc Welding MMA

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Lack of side wall fusion

Tungsten Inert Gas Welding TIG

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Inter-pass cold laplack of side wall fusion

Tungsten Inert Gas Welding TIG

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Scattered Porosity

Manual metal arc welding MMA

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Cluster Porosity

Manual metal arc welding MMA

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Root aligned porosity

Tungsten Inert Gas Welding TIG

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Transverse cracks

Tungsten Inert Gas Welding TIG

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Longitudinal crack

TIG/MMA

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Longitudinal root crack

Manual metal arc welding MMA

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Tungsten inclusions

Tungsten Inert Gas Welding TIG

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