Tru-Weld SC2400 Arc Welder - Manual (Page 22)

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SC2400 Operations ‐ Welding
Stud Welding ‐ Step by Step
The weld gun is positioned over the base material and the main gun spring
is partially compressed. Hold gun perpendicular to work surface and hold
ferrule firmly against the surface.
The trigger is pressed and the stud lifts off the base, drawing an arc. The arc
melts the end of the weld stud and the base material below. The arc shield
(ferrule) concentrates the heat below the weld stud and contains the mol‐
ten metal within the weld zone. Do not move weld gun during weld.
The main spring plunges the weld stud down into the molten pool of metal
in the base material. The cycle is completed in less than a second and the
resulting weld bond develops the full strength of the fastener in the weld
zone. Allow metal to cool and withdraw gun from the stud, pulling the gun
straight up off of the stud.
The weld gun is withdrawn from the weld stud leaving and the ferrule. The
ferrule is broken away and discarded. Visually inspect weld.
*** Note ‐ when determining finished length required for the particular application, keep in mind
the reduction in length (burn‐off) from stud welding operations. TRU‐WELD stud lengths are al‐
ways given before weld.
Diameter of Stud Reduction in Length
1/4” thru 1/2” 1/8”
5/8” thru 7/8” 3/16”
1” and over 1/4”