Mild steel, 250a, O₂ plasma / air shield – Tweco Ultra-Cut Torch Data User Manual
Page 51: This art is for reference only
Manual 0-4828
Rev BA 8-51
TORCH DATA for Ultra-Cut
Mild Steel
Flow Rates (SLPM / SCFH)
250A
O₂
Air
Preflow
- / -
160 / 339
O₂ Plasma / Air Shield
Cutflow
36 / 76
132 / 279
Shield Retainer
Shield Cap
Shield Gas
Distributor
Tip
Plasma Gas Distributor
Electrode
Cartridge
21-1014
21-1030
21-1285
21-1056
21-1042
21-1093
21-1022
GCM-2010
SC-3000 Torch Height Control (THC)
Basic THC
CNC Control
Material
Thickness
Pre Flow
Pressure
(Air)
Cut Flow Rates / Pressures
Arc
Voltage Cut Height
THC
Pierce
Delay
Pierce
Ignition
Height
Elevation
Height
Control
Delay
Pierce
Height
without
Elevation
Travel
Speed
CNC
Motion
Delay
Max Kerf Width
@ Rec. Speed
Plasma (O₂)
Shield (Air)
ga
(in)
inch
(psi)
Ball (psi) Ball (psi) (Volts) (in) ±0.005 (sec)
(in)
(in)
(sec)
(in)
(ipm)
(sec)
(in)
-
5/8
0.625
15
100 100 NA 100
147
0.170
0.7
0.300 0.250
0.5
0.400
115
0.6
0.167
-
3/4
0.750
15
100 100 NA 100
152
0.180
1.0
0.350 0.300
0.5
0.450
90
0.8
0.171
-
7/8
0.875
15
100 100 NA 100
154
0.190
1.4
0.350 0.300
0.5
0.450
70
1.0
0.170
-
1
1.000
15
100 100 NA
90
157
0.200
1.9
0.400 0.300
0.5
0.500
60
1.4
0.181
-
1 1/4 1.250
15
100 100 NA 100
160
0.200
2.5
0.400 0.300
0.5
0.500
43
1.8
0.191
-
1 1/2 1.500
15
100 100 NA 100
164
0.200
4.2
0.400 0.350
0.5
0.550
33
3.2
0.197
-
1 3/4 1.750
15
100 100 NA 100
171
0.200
1.0
Edge Start
0.5
Edge
23
1.0
0.197
-
2
2.000
15
100 100 NA 100
177
0.200
1.0
Edge Start
0.5
Edge
15
1.0
0.197
GCM-2010
SC-3000 Torch Height Control (THC)
Basic THC
CNC Control
Material
Thickness
Pre Flow
Pressure
(Air)
Cut Flow Rates / Pressures
Arc
Voltage Cut Height
THC
Pierce
Delay
Pierce
Ignition
Height
Elevation
Height
Control
Delay
Pierce
Height
without
Elevation
Travel
Speed
CNC
Motion
Delay
Max Kerf Width
@ Rec. Speed
Plasma (O₂)
Shield (Air)
(mm)
(Bar)
Ball (Bar) Ball (Bar) (Volts) (mm) ±0.1 (sec)
(mm)
(mm)
(sec)
(mm)
(mm/
min)
(sec)
(mm)
15
1.0
100 6.9
NA
6.9
146
4.2
0.6
7.3
6.0
0.5
9.8
3100
0.5
4.2
20
1.0
100 6.9
NA
6.9
153
4.6
1.1
8.9
7.6
0.5
11.4
2130
0.9
4.3
25
1.0
100 6.9
NA
6.3
157
5.0
1.8
10.0
7.6
0.5
12.5
1560
1.3
4.6
30
1.0
100 6.9
NA
6.7
159
5.1
2.3
10.2
7.6
0.5
12.7
1210
1.7
4.8
35
1.0
100 6.9
NA
6.9
162
5.1
3.4
10.2
8.3
0.5
13.4
960
2.5
4.9
40
1.0
100 6.9 NA 6.9
167
5.1
1.0
Edge Start
0.5
Edge
710
1.0
5.0
50
1.0
100 6.9 NA 6.9
176
5.1
1.0
Edge Start
0.5
Edge
410
1.0
5.0
Marking
Pre Flow
Pressure
(N₂)
Marking Flow Rates /
Pressures
Arc
Voltage
Marking
Height
Pierce Ignition Height
THC and CNC
Delay
Control
Delay
Travel
Speed
Marking quality
degrades as
thickness
decreases.
25A Arc Current
Plasma (N₂)
Shield (N₂)
Burn-through may
happen for thicknesses
< 1/16” (0.063”) /
1.6 mm.
(psi) /
(Bar)
Ball (psi) /
(Bar)
Ball (psi) /
(Bar) (Volts)
(in) ±0.005 /
(mm) ±0.1
(in) ±0.005 / (mm) ±0.1
(sec)
(sec)
(ipm) /
(mm/ min)
15 / 1.0
80
60 /
4.1
NA
90 /
6.2
159 0.120 / 3.0
0.120 / 3.0
0
0.5
300 /
7620
BOLD TYPE indicates maximum piercing parameters. BOLD ITALIC indicates edge starts only.
Cartridge
Electrode
Shield
Shield Gas
Distributor
Tip
Plasma Gas
Distributor
Shield Retainer
Art # A-07917_AC
This Art Is For Reference ONLY
8.05 Standard Cutting 250 - 300 Amp