Hypertherm HD3070 Plasma Arc Cutting System w/ Automatic Gas Console - Manual (Page 115)

4-26 HD3070 with Automatic Gas Console Instruction Manual
16
OPERATION
PAC186
Stainless Steel##
Air Plasma / Air Shield
30 Amp Cutting
Shield
020941 Nozzle
020938 Electrode
120113
Retaining Cap
020940
Swirl Ring
020937
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)
27 0.016 0.4 75 0 30 0 60 – 70-75 0.020 0.5 250 6.35 0.040 1.0 0 0
24 0.024 0.6 75 0 30 0 60 – 70-75 0.020 0.5 220 5.59 0.040 1.0 0 0
22 0.030 0.8 75 0 30 0 60 – 70-75 0.020 0.5 200 5.08 0.040 1.0 0 0.1
20 0.036 0.9 75 0 30 0 60 – 70-75 0.020 0.5 180 4.57 0.040 1.0 0 0.1
18 0.048 1.3 75 0 30 0 60 – 73-78 0.020 0.5 150 3.81 0.060 1.5 .5 0.2
16 0.060 1.5 75 0 30 0 60 – 73-78 0.020 0.5 120 3.05 0.060 1.5 .5 0.2
Air inlet pressures must be between 105 - 135 psi (7.2 - 9.2 bar) for all material thickness.
# Refer to LCD display Figure 4-3.
## Stainless steel plate sometimes comes with a protective plastic film. Remove film prior to cutting.
* Slightly increasing the test preflow Air 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
Air
(3)
# (4) #
Plasma
Air
(5)
# (6) #
Test Preflow*
Flowrates (%)
Preflow
Air
(1)
# (2) #