15 amp, Operation pac186 mild steel o, Plasma / o – Hypertherm HD3070 Plasma Arc Cutting System w/ Automatic Gas Console User Manual
Page 113: Shield 15 amp cutting
4-24
HD3070 with Automatic Gas Console
Instruction Manual
16
OPERATION
PAC186
Mild Steel
O
2
Plasma / O
2
& N
2
Shield
15 Amp Cutting
Shield
020670
Nozzle
020644
Electrode
120111
Retaining Cap
020633
Swirl Ring
020637
PAC186 Torch
120349
Shield Cap
020634/020687
Material
Thickness
(GA)
(in)
(mm)
Arc
Voltage
***
(volts)
Torch
Standoff
**, ***
(in)
(mm)
Travel
Speed
(ipm)
(m/min)
Pierce
Delay
(dial)
(sec)
Initial
Piercing
Height
(in)
(mm)
20
0.036
0.9
5
75
30
10
40
–
120
0.020
0.5
100
2.54
0.040
1.0
0
0.1
18
0.048
1.3
5
75
30
10
40
–
121
0.020
0.5
85
2.16
0.040
1.0
0
0.1
16
0.060
1.5
5
75
30
10
40
–
124
0.030
0.8
65
1.65
0.040
1.0
.5
0.2
14
0.075
1.9
5
75
30
10
40
–
130
0.040
1.0
45
1.14
0.060
1.5
1
0.3
12
0.150
2.7
5
75
30
10
40
–
132
0.040
1.0
35
0.90
0.060
1.5
1.5
0.4
10
0.135
3.4
5
75
30
10
40
–
134
0.040
1.0
25
0.64
0.060
1.5
2
0.50
O
2
and N
2
gas inlet pressures must be between 105 - 135 psi (7.2 - 9.2 bar) for all material thickness.
#
Refer to LCD display Figure 4-3.
* Slightly increasing the test preflow O
2
and N
2
flowrates may increase piercing capability on the thicker materials listed
above. However, increasing the preflow flowrates too much may affect plasma starting reliability (misfiring).
** Torch standoff tolerances are ± 0.005 inch (± 0.125 mm). When using a THC, tolerances are ± 1 volt.
*** To maintain the 0.020 inch (0.5 mm) torch standoff as the electrode wears, the arc voltage may have to be increased to
avoid having the torch dive into the plate.
Counter clockwise (CCW) consumables are available for mirror image cutting. Refer to Section 6, Parts List.
If problems occur with the cutting process, and the flowrates are suspect, refer to Section 5, Maintenance, Gas System Back
Pressure Checks.
Test Cut
Flowrates (%)
Shield
O
2
N
2
(3)
#
(4)
#
Plasma
O
2
(5)
#
(6)
#
Test Preflow*
Flowrates (%)
Preflow
O
2
N
2
(1)
#
(2)
#