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Appendix I, Continued |
APPENDIX I
GLOSSARY
ACC— Air carbon arc cutting.
ARC BLOW— The tendency for an arc to wander or
whip from its normal course during arc welding.
ASME— American Society of Mechanical Engineers.
AWS— American Welding Society.
BACKFIRE— Momentary burning back of the flame
into the torch tip during welding or cutting.
BACKHAND WELDING— Welding in the direction
opposite the direction the gas flame is pointing.
BURR— The sharp edge remaining on metal after cut-
ting.
CARBURIZING FLAME— Produced by burning an
excess of fuel gas.
CHAMFER— Bevel angling the metal edge where
welding is to take place.
COMPRESSION STRESSES— The stresses devel-
oped within a material when forces tend to com-
press or crush the material.
DCRP— Direct current reverse polarity.
DCSP— Direct current straight polarity.
DISTORTION— The warping of a structure.
DUCTILITY— The property that enables a material to
withstand extensive permanent deformation due to
tension.
ELASTICITY— The ability of a material to return to
its original form after deformation.
FATIGUE—- The tendency of a material to fail after
repeated stressing at the same point.
FATIGUE STRENGTH— The ability of a material to
resist various kinds of rapidly alternating stresses.
FERROUS— Denotes the family of metals in which
iron is the major ingredient.
FLASHBACK— The flame burning in or beyond the
torch mixing chamber during welding or cutting.
FLUX— A chemical used to promote fusion of metals
during the welding process.
FOREHAND WELDING— Welding in the same di-
rection as the torch flame points.
FUSION— The melting together of metals.
GMAW— Gas metal arc welding.
GTAW— Gas tungsten arc welding.
IMPACT STRENGTH— The ability of a metal to
resist suddenly applied loads; measured in foot-
pounds of force.
KERF— The narrow slit formed in metal as cutting
progresses.
LAYOUT— The process of measuring and marking
materials for cutting, bending, drilling, or welding.
MALLEABILITY— The property that enables a ma-
terial to withstand permanent deformation caused
by compression.
MAPP— A stabilized methyl acetylene-propadiene
fuel gas. A Dow Chemical Company product.
METALLOID— A nonmetal that can combine with a
metal to form an alloy.
METALLURGY— The science and technology of
metals.
MIG— A term used to describe gas metal arc welding
(metal inert gas).
NEUTRAL FLAME— Produced when equal amounts
of oxygen and fuel gas are burned.
NORMALIZING— A heat-treating operation involv-
ing the heating of an iron-base alloy above its
critical temperature range and cooling it in still air
for the purpose of removing stresses.
NONFERROUS— Metals containing no iron.
OFW— Oxyfuel welding.
OXIDIZING FLAME— Produced by burning about
twice as much oxygen as fuel gas.
PASS— A single progression of a welding operation
along a joint or weld deposit. The result of a pass is
a weld bead.
AI-1
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