Welding visual inspection training

[Audio] Welding Visual Inspection Training. Welding visual inspection training.

[Audio] Porosity is a cavity type discontinuity formed by gas entrapment during solidification or in a thermal-spray deposit. The discontinuity formed is generally spherical and may be elongated. Two common causes of porosity are contamination and insufficient shielding during welding..

[Audio] Scattered Porosity which is uniformly distributed throughout the weld metal..

[Audio] Piping Porosity which is a form of porosity having a length greater than its width that lies approximately perpendicular to the weld face. It is also known as " wormhole Porosity" Aligned Porosity which is a localized array of porosity oriented in a line. The pores may be spherical or elongated. Linear porosity is a nonstandard term when used for aligned porosity.