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Weld Quality

TermDefinition
Code Set of requirements covering permissible materials, service limitations, fabrication, inspection, testing procedures, and qualifications of welders.
Cracks Narrow breaks that occur in the weld metal, in the base metal, or in the crater formed at the end of a weld bead.
Inclusion Foreign matter introduced into and remaining in a weld.
Laminations Cracks in the base metal formed when layers separate.
Defect A discontinuity or imperfection that renders a part of the product or the entire product unable to meet minimum acceptable standards or specifications.
Discontinuity A change or break in the shape or structure of a part that may or may not be considered a defect, depending on the code.
Undercut Groove melted into the base metal beside the weld. It is the result of the arc removing more metal from the joint face than is replaced by weld metal.
Arc Strike Small, localized points where surface melting occurs away from the joint.
Spatter Very fine particles of metal on the plate surface adjoining the weld area.
Incomplete Joint Penetration Occurs when the filler metal fails to penetrate and fuse with an area of the weld joint.
Incomplete Fusion The failure of a welding process, to fuse or join together, layers of weld metal or weld metal and base metal.
Created by: wthompson79
 

 



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