Doc No. 740048
12
MODEL 96
TUBE TO TUBESHEET WELD HEAD
OPERATION MANUAL
6.0 ELECTRODE GEOMETRY AND INSTALLATION
(Cont’d.)
6. 5 Use this chart to determine a recommended Arc Gap and electrode
Tip Diameter.
Tube/Pipe Wall
Thickness
Recommended
Arc Gap
Recommended Tip
Diameter
0.015”–0.035”(.38 –.89mm)
0.020”-0.030”(0.50-76mm)
0.010”-0.020” (.25-.50mm)
0.036”-0.083” (.91-2.1mm)
0.030”-0.050” (.76-1.3mm)
0.020” -0.030” (.50-.76mm)
0.084”-0.250” (2.1-6.3mm)
0.050”-0.070” (1.3-1.8mm)
0.030”–0.040” (.76- 1.0mm)
Fig. 8
6.6 Loosen the socket head electrode lock screw in the electrode holder.
6.7 Install an electrode, and be sure it is fully seated and bottomed-out in
the holder. Tighten the lock screw. See fig. 9
CAUTION
DO NOT INSTALL AN ELECTRODE INTO AN OVER-SIZED
ELECTRODE HOLDER.
ALWAYS USE THE CORRECT SIZE ELECTRODE HOLDER.
Fig. 9
