Lincoln Electric IMT237 AC_DC 225_125 - Manual (Page 11)

B-3
OPERATION
Cutting (Do not exceed the Duty Cycle — At the beginnig of this
Operation Section)
The arc welder and the electrode can be used for cutting steel and cast
iron. Follow this procedure:
1. Use 1/8” (3.2mm) or 5/32" (4.0mm) Fleetweld 180 electrode.
2. Set welder on maximum (225 amps).
3. Hold long arc on edge of metal, melting it.
4. Push the arc through the molten metal, forcing it to fall away.
5. Raise the electrode, and start over again.
The important thing is to continue this up-and-down, sawing motion,
melting the metal and pushing it away.
Piercing Holes
1. Welder setting: Maximum (225
amps).
2. Electrode: 1/8” (3.2mm) or 5/32"
(4.0mm) Fleetweld 180.
3. Hold the electrode with a long arc
perpendicular over the spot
where the hole is to be made.
4. When the metal is molten, push
the electrode through the molten
puddle.
5. Give the molten metal a chance
to fall through the hole.
6. Circle with a long arc around the
edge of the hole until the desired
diameter hole has been made.
If the electrode is pushed through too soon it will stick in the puddle. Be
sure the metal is molten before pushing through .
NOTE: On heavy metal (5/16" (7.9mm) or thicker), position the plate to be
pierced vertically, and the electrode horizontally. This allows the molten
metal to drip away freely as you are boring through.
AC-225-S & AC/DC 225/125