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SMAW Terms 1

alternating current (AC)An electrical current that reverses its direction at regular intervals of time.
arc welding electrodeA component of the welding circuit through which current is conducted.
butt jointA welding joint between two members aligned approximately in the same plane.
craterA depression at the termination of a weld bead.
currentThe amount of electricity passing through a conductor in a given amount of time.
ductilityThe ability of a material to become permanently deformed without failure.
ferrousA metal that contains iron primarily, such as carbon steels, cast irons, and stainless steels.
fillet weldA weld of approximately triangular cross-section joining two surfaces approximately at right angles to each other in a lap joint, T-joint, or corner joint.
gas metal arc weldingAn arc welding process that produces coalescence of metals by heating them with an arc between a continuous filler metal electrode and the workpieces.
grooveAn opening or channel in the surface of a part or between two components which provides space to contain a weld.
helmetA device designed to be worn on the head to protect eyes, face, and neck from arc radiation, radiated heat, spatter, or other harmful matter expelled during arc welding.
impact strengthThe ability of a metal to withstand a sharp high-velocity blow without fracturing.
inert gasA non-reactive shielding gas. A gas that normally does not combine chemically with the base metal or filler metal.
jointThe junction of members or the edges of members which are to be joined or have been joined.
MIG weldingA non-standard term for gas metal arc welding.
plug weldA weld made in a circular hole in one member of a joint fusing that member to another member.
puddleA non-standard term for weld pool
root beadA weld that extends into or includes part of all of the joint root.
shielded metal arc weldingAn arc welding process that produces coalescence of metals by heating them with an arc between a covered metal electrode and the workpieces.
slagThe non-metallic layer that forms on top of molten metal.
spatterThe metal particles expelled during fusion welding that do not form a part of the weld.
stringer beadA type of weld bead made without appreciable weaving motion.
tack weldA weld made to hold parts of a weldment in proper alignment until the final welds are made.
tensile strengthThe resistance of a material to a force which is acting to pull it apart.
undercutA groove melted in the base material usually along the toes of a weld that produces a weak spot in the weld and is considered a defect in many cases.
voltageThe “force” or “pressure” that pushes current through a conductor.
weave beadA type of weld bead made with transverse oscillation.
weldabilityThe capacity of material to be welded under the imposed fabrication conditions into a specific, suitable designed structure and to perform satisfactorily in the intended service.

Agriscience Teacher
Albertville High School
Albertville, AL

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