NOCTI Study Guide
Welding - correct answer Uses extreme heat to join or fuse pieces of metal
together.
Pressure Welding - correct answer The metal is heated to a softened state by
electrodes. Pressure is applied and the metal is joined.
Fusion Welding - correct answer Pieces of metal are heated to the melting point,
joined together, and allowed to cool.
Weld Root - correct answer The part of the joint where the wire electrode is
directed.
Weld Face - correct answer The exposed surface of the weld on the side that has
been welded.
Weld Penetration - correct answer Indicated by the height of the exposed surface of
the weld on the back side. Full weld penetration is needed to assure maximum weld
strength.
Burn Mark - correct answer An indication of good weld penetration.
Burn-Through - correct answer Results from penetrating too much into the lower
base metal, which burns a hole through the back side of the metal.
Weld Legs - correct answer The width and height of the weld bead.
Weld Throat - correct answer Refers to the depth of the triangular cross section of
the weld.
