APPENDIX A: ARGON-HYDROGEN CUTTING AND GOUGING
a-10 HySpeed HT2000LHF Instruction Manual
6
Shield Arc Approx.
Material
Plasma Gas Flow Rate %
Gas (N
2
) Torch-to-work Initial Torch Voltage Motion
Thickness Preflow Cutflow Pressure Distance Piercing Height Setting Travel Speed Delay Time
(inches) (mm) (H35 %) (H35 %) (psi) (inches) (mm) (inches) (mm) (volts) (ipm) (mm/min.) (sec)
1/8 3 13 13 60 3/32 2.5 3/16 5 130 50 1260
3/16 5 (46.7 (46.7 (270 1/8 3 1/4 6 135 40 1060 0.5
1/4 6 SCFH) SCFH) SCFH) 3/16 5 3/8 10 140 35 890 0.5
3/8 10 3/16 5 3/8 10 140 30 750 0.5
1/2 12 3/16 5 3/8 10 145 25 630 1.0
Stainless Steel
100 amps • H35 Plasma / N
2
Shield
Argon-Hydrogen Manifold (073109) Required*
This gas combination (Hypertherm recommends a mixture of 35% hydrogen and 65% argon for the plasma gas)
gives good cut speed, but may result in excessive dross. Some surface nitriding and surface oxidation of alloying
elements can occur.
1 inch = 25.4 mm; 1 scfh = 28.316 liter/hour; 1 psi = .0689 bar = 6.895 KPa
Notes: Set argon-hydrogen plasma gas inlet pressure to 120 psi (8.3 bar)
Set nitrogen shield gas inlet pressure to 90 psi (6.2 bar)
Production cutting above 3/8" (10 mm) not recommended
Above Water Only
020448
Shield
120837
Retaining cap
020611
Nozzle
020607
Swirl ring
020415
Electrode
WARNING
Do not use water muffler
when cutting with argon-hydrogen
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