Procedure - Hypertherm Powermax45 XP Operator's Manual

Start at a lower output current, and gradually increase it.

Start with the current set to 10 A if you have never removed a spot weld before. Once

you develop a technique you are comfortable with, try gradually increasing the output
current. This enables you to gouge with better speed and efficiency.

Procedure

This procedure describes how to separate 2 metal layers and then remove the spot weld from the
underneath layer.

The pictures in this procedure show mild steel plates. The slag on
stainless steel is darker, more jagged, and harder to remove.
1. Install the Precision gouging consumables.
2. On the front panel, select Gouge/Marking mode. Set the output current to 10 – 25 A.
3. Position the torch on one side of the spot weld. Hold the torch at approximately a 40° – 45°
angle to the workpiece.
Left-handed approach
4. Press the trigger to obtain a pilot arc. Transfer the arc to the workpiece, then stretch the arc to
approximately 10 – 11 mm (3/8 – 1/2 inch). Maintain this arc as you gouge.
5. Make 2 separate gouges in an "L"-shaped motion to gouge all the way around the spot weld.
See Table 1 on page 78.
Table 1 shows one example of this technique (for both right-handed and left-handed

gouging). You can start at different points around the spot weld. The important thing is
to keep the torch pointed in the same direction all the way around the weld.
As you gouge, use very short strokes in a back-and-forth weaving motion until you have

cut through the top layer.
You may need to adjust the angle of the torch slightly, depending on the thickness of the

metal.
Powermax45 XP Operator Manual
40° – 45°
809240
Gouge with the Hand Torch and Machine Torch
Right-handed approach
Spot weld
4
40° – 45°
77