32
7 Operation of the power supply EX-TRAFIRE
®
105HD
7.7.1 Table for FHT-EX
®
105TT material removal
1 Use gouging consumables suitable
to the cutting torch being used.
2 Hold the cutting torch at an angle of
30° to 35° inclined to the workpiece.
3 Hold the nozzle close enough to the
workpiece that it touches the
workpiece.
4 Press the torch trigger to ignite the
arc.
5 Continue to hold the cutting torch at
an angle of 30° to 35° to the
workpiece and move it in the
direction of the material to be
removed.
Table 11 Table for FHT-EX
®
105TT material removal
Gouging parameters
(Dynamic) air pressure 75 psi (5.2 bar)
Distance between cutting
torch and workpiece
As close as possible
Angle of cutting torch to
workpiece
30° to 35°
Speed 23 in/min. (0.6 m/min.)
Current 65 A 85 A 105 A
Removal rate for mild steel Approx.
11 lb/hr
(4.8 kg/h)
Approx.
17 lb/hr
(7.74 kg/h)
Approx.
20 lb/hr
(9.0 kg/h)
Width of gouge Approx.
0.21 in
(5.5 mm)
Approx.
0.22 in
(5.7 mm)
Approx.
0.24 in
(6.2 mm)
Depth of gouge Approx.
0.17 in
(4.5 mm)
Approx.
0.18 in
(4.8 mm)
Approx.
0.16 in
(4.1 mm)
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