THERMACUT EX-TRAFIRE 125HD - Gouging; Table for material removal

EX-TRAFIRE
®
125HD 7 Operation of the power supply
EN - 29
7.7 Gouging
Gouging can remove welding seams and achieve a controlled gouge
profile. The gouge profile can be influenced by the actions in the following
table:
7.7.1 Table for FHT-EX
®
125TT material removal
Gouge profile Actions
Narrower and flatter
 Reduce current or increase speed.
Narrower and
deeper
 Reduce the distance between the torch and
workpiece or hold the cutting torch at larger
angle to workpiece.
Wider and deeper
 Increase current or reduce the speed.
Wider and shallower
 Increase the distance between the cutting torch
and workpiece or hold the cutting torch at
flatter angle to the workpiece.
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 so 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 10 Table for FHT-EX
®
125TT material removal
Gouging parameters
(Dynamic) air pressure 2.7 bar
Distance between cutting torch and
workpiece
As close as possible
Angle of cutting torch to workpiece 30–35 °
Speed 0.6 m/min.
Current 65 A 85 A 105 A 125 A
Removal rate for mild steels Approx.
0.6 kg/hr
Approx.
2.8 kg/hr
Approx.
4.2 kg/hr
Approx.
8.0 kg/hr
Width of gouge Approx.
5.8 mm
Approx.
6.0 mm
Approx.
6.3 mm
Approx.
6.9 mm
Depth of gouge Approx.
1.2 mm
Approx.
3.8 mm
Approx.
5.0 mm
Approx.
6.2 mm