Cut charts, Page, Plasma / o – Tweco Dynamics Automation User Manual
Page 3
Cut charts
Thermal Dynamics provides a cut parameters chart for every process and output current combination.
15A Arc Current
Arc
Voltage
Torch
Working
Height
Travel
Speed
Initial
Piercing
Height
Pierce
Delay
Ball
Press Ball Press
Volts
In ±0.005 /
mm ± 0.1
ipm /
mm/min
In ±0.005 /
mm ± 0.1
(sec)
20psi
1.4 bar
20
40 psi
2.8 bar 70
80 psi
5.5 bar
145
0.1
2.5
300
7600
0.1
2.5
0
Marking (with 30A Mild Steel Parts)
Cut Flow Rates /
Pressures
Marking
Quality
Degrades
as
Thickness
Decreases
.
Burn-through
may
occur on
thicknesses
< 1/16” (0.063”) /
1.6 mm
Plasma
Pressure (N
2
)
Shield
Pressure N
2
)
Pre Flow
Pressure
(N
2
)
Material
Thickness
Pre Flow
Pressure
(Air)
Arc
Voltage
Torch
Working
Height
Travel
Speed
Initial
Piercing
Height
Pierce
Delay
Kerf
Width
@ Rec.
Speed
(mm)
(Bar)
Ball (Bar) Ball (Bar) Volts
(mm)
±0.1
(mm/
min)
(mm)
(sec) (mm)
1
4.1
22
8.3
21 8.3 130
1.3
3050
3.0
0.2
1.5
2
4.1
22
8.3
21 8.3 145
1.9
1130
3.1
0.3
1.8
3
4.1
22
8.3
21 8.3 150
3.0
910
3.8
0.3
2.0
4
5.5
22
8.3
21 8.3 154
3.2
710
3.8
0.3
2.1
5
5.5
22
8.3
21 8.3 155
3.0
640
3.8
0.4
1.9
Cut Flow Rates /
Pressures
Plasma (O
2
) Shield (O
2
)
Pre Flow
Pressure
(Air)
Arc
Voltage
Torch
Working
Height
Travel
Speed
Initial
Piercing
Height
Pierce
Delay
Kerf
Width
@ Rec.
Speed
(ga) (in) inch
(PSI)
Ball (PSI) Ball (PSI) Volts
(in)
±0.005
(ipm)
(in)
(sec)
(in)
20
0.036
60
22
120 21 120 128
0.050
130
0.120
0.2 0.058
16
0.060
60
22
120 21 120 143
0.050
60
0.120
0.3 0.070
14
0.075
60
22
120 21 120 145
0.070
45
0.120
0.3 0.072
12
0.105
60
22
120 21 120 148
0.110
40
0.150
0.3 0.074
10
0.135
80
22
120 21 120 154
0.130
30
0.150
0.3 0.085
3/16 0.188
80
22
120 21 120 154
0.120
25
0.150
0.4 0.075
30A Mild Steel (O
2
/O
2
)
Plasma (O
2
) Shield (O
2
)
Material
Thickness
Cut Flow Rates /
Pressures
Cartridge
21-1020
Electrode
21-1068
Plasma
Gas Distributor
21-1040
Tip
21-1050
Shield Cap
21-1024
Shield Cup
21-1016
Art # A-06768
Shield
Gas Distributor
21-1082
Kerf Size
Material
Current
Level
Process
Consumable Parts
Gas Control
Settings
Mild Steel
30A
O
2
Plasma / O
2
Shield
Pierce
Data
Arc Voltage for
Torch Height Control
Plasma Marking
Parameters
page