Hypertherm HyDefinition HD3070 - Page 112

HD3070 with Automatic Gas Console Instruction Manual 4-23
16
OPERATION
PAC184
Mild Steel
O
2
Plasma / O
2
& N
2
Shield
30 Amp Cutting
Shield
120222
Nozzle
120218
Electrode
120209
Retaining Cap
120219
Swirl Ring
120212
PAC184 Torch
120208
Shield Cap
120221/120543
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)
24 0.024 0.6 5 75 15 5 46 — 117 0.030 0.8 200 5.08 0.060 1.5 0 0.05
22 0.030 0.8 5 75 15 5 46 — 121 0.030 0.8 170 4.32 0.060 1.5 0 0.05
20 0.036 0.9 5 75 15 5 46 — 125 0.040 1.0 140 3.56 0.080 2.0 0 0.05
18 0.048 1.3 5 75 15 5 46 — 128 0.040 1.0 110 2.80 0.080 2.0 0 0.05
16 0.060 1.5 5 75 15 5 46 — 128 0.040 1.0 80 2.03 0.080 2.0 0 0.05
14 0.075 1.9 5 75 15 5 46 — 128 0.040 1.0 60 1.52 0.080 2.0 0.5 0.16
12 0.105 2.7 5 75 15 5 46 — 135 0.060 1.5 50 1.27 0.100 2.5 1 0.27
10 0.135 3.4 5 75 15 5 46 — 135 0.060 1.5 35 0.90 0.100 2.5 1.5 0.37
3⁄16 4.8 5 75 15 5 46 — 135 0.060 1.5 32 0.81 0.100 2.5 2 0.50
1⁄46.45 75301046 — 136 0.040 1.0 25 0.64 0.100 2.5 2.5 0.60
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.
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)
#