Lincoln Electric SPIRIT II 275 Technical Manual page 94

Section 5: Torch Consumables and Cutting Charts
H17 Plasma / Nitrogen Shield / Nitrogen Preflow & Postflow
This gas combination gives the best cut quality and minimum dross levels
Shield Cap
BK277211
Outer Cap
BK284150
Imperial*
Material
Preflow
Thickness
(in) (psi)
3/8
1/2
5/8
40
3/4
1.0
1.25 **
Metric*
Material
Preflow
Thickness
(mm) (psi)
10
12
16
40
20
25
32 **
Marking* – For All Material Thicknesses
Type of Gas Preflow
(Plasma) (Shield) (psi)
Nitrogen Nitrogen N/A
Argon Nitrogen N/A
WARNING Do not connect H17 (combustible gas) as an input gas (Pre/Postflow, Plasma, or Shield) at the same time as
Oxygen or Air.
* Use an arc transfer height (ignition height) of .250" (6.4 mm) for cutting and .100" (2.5 mm) for marking.
** Edge start recommended.
(Revised 04/26/2013)
This information is subject to the controls of the Export Administration Regulations [EAR]. This information shall not be provided to
non-U.S. persons or transferred by any means to any location outside the United States contrary to the requirements of the EAR.
Stainless Steel - 260 Amps - Copper Electrode
(H17 = 17.5% Hydrogen / 32.5% Argon / 50% Nitrogen)
Nozzle
BK277118
Retaining Cap
BK277280
Plasma Shield Postflow
(psi) (psi) (psi)
63 64 63
Plasma Shield Postflow
(psi) (psi) (psi)
63 64
Plasma Shield Postflow
(psi) (psi) (psi)
25 25 N/A
50 25 N/A
BK277135
Swirl Ring
BK277139
Arc Travel
Voltage Speed
(volts) (ipm)
145 85
142 80
145 65
150 55
160 33
170 26
Arc Travel
Voltage Speed
(volts) (mm/m)
144 2140
142 2060
145 1640
63
151 1315
159 875
170 650
Arc Travel
Voltage Speed
(volts) (ipm) (mm/min)
108 250 6350
75 100 2540
5-32
Spirit II User's Manual
Electrode
Torch Head
BK279100
Cutting Pierce Pierce
Height Height Time
(in) (in) (msec)
.160 .250 500
.140 .300 600
.185 .350 800
.225 .400 1200
.250 .450
1500
.280 .350
Cutting Pierce Pierce
Height Height Time
(mm) (mm) (msec)
4.0 6.5
600
3.7 7.3
4.7 8.9 800
5.8 10.3
6.3 11.3 1500
7.1 8.7
Marking Initial
Height Height
(in) (mm) (in) (mm) (msec)
.100 2.5 .100 2.5
.160 4.1 .100 2.5
Kerf
Width
(in)
.190
.195
.200
.205
Kerf
Width
(mm)
4.8
5.0
5.1
5.2
Pierce
Time
0
0