Defects
Porosity
Porosity
Inadequate shielding of oxygen
Contaminants such as grease, oils, or paint, burning off
Extreme travel angle pulling air in behind torch
Convex weld - lack of fusion
Convex weld - lack of fusion
weld is too cold
Improper travel speed
Improper travel speed
slow it down hot rod
Good Welds
Good Welds
Note edges are tied in and uniform travelÂ
Acceptable and Unacceptable Weld Profiles
Acceptable and Unacceptable Weld Profiles
Terms:
Concavity - folds inward, as in a cave entrance
Convexity - bulges or rolls outward
acceptable and unacceptable welding profiles.pdf