01053015 MANUFACTURING; Department of Mechanical Engineering, KMITL
©2010 John Wiley & Sons, Inc. M P Groover, Principles of Modern Manufacturing
Cavities
Two defect types, similar to defects found in castings:
1.
Porosity -small voids in weld metal formed by gases entrapped during solidification
Caused by inclusion of atmospheric gases, sulfur in weld metal, or surface contaminants
2.
Shrinkage voids -cavities formed by shrinkage during solidification