WELDING DEFECTS | WELDING IMPERFECTION | CRACK | POROSITY | UNDERCUT | SPATTER | SLAG INCLUSION


 "Welding Defects | Welding Imperfection | Crack | Porosity | Undercut | Spatter | Slag Inclusion":


Introduction to Welding Defects:

- The video introduces welding defects and their types, development, and prevention.


 Types of Welding Defects:

   - Cracks: 

     - Occur due to residual stress from non-uniform heating or cooling.

     - High sulfur or phosphorus content in metals increases crack chances.

     - Not preheating before welding can lead to cracks.

   - Porosity:

     - Refers to small holes in the weld metal caused by trapped gases.

     - Can occur due to low-quality or corroded electrodes.


   - Undercut:

     - A groove along the weld, reducing strength.

     - Can develop from high welding speed or inconsistent feeding.

   - Spatter:

     - Small droplets of molten metal scattered on the workpiece.

     - Caused by incorrect welding parameters like polarity or current.


   - Incomplete Fusion:

     - Occurs when weld metal does not bond completely with the base metal, leading to weak joints.

   - Slag Inclusion:

     - Non-metallic particles trapped in the weld, compromising quality.

     - Can occur due to improper cleaning or low-quality electrodes.

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