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Welding Defects - Coggle Diagram
Welding Defects
Slag inclusion
caused from oxide, electrode coating or fluxes trapped
With control of welding process parameters, the molten slag will float to the surface of the molten weld metal and thus will not become entrapped.
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Prevention
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redesigning the joint to permit sufficient space for proper manipulation of the puddle of molten weld metal.
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Porosity
During welding metal absorb gases (high affinity to gases). When solidified, gases trapped in metal. Large size of porosity called ‘blowhole.
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Weld Discontinuites
The profile of a completed weld may have considerable affect on the performance of that weld in service
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