Lincoln Electric SPIRIT II 275 Technical Manual page 98

Section 5: Torch Consumables and Cutting Charts
Air Plasma / Nitrogen Shield / Air Preflow & Postflow
Shield Cap
BK277150
Outer Cap
BK284150
Imperial*
Material
Preflow
Thickness
(in) (psi)
.080
1/8
3/16
25
1/4
3/8
1/2
Metric*
Material
Preflow
Thickness
(mm) (psi)
2
3
5
25
6
10
12
Marking* – For All Material Thicknesses
Type of Gas Preflow
(Plasma) (Shield) (psi)
Nitrogen Nitrogen N/A
Argon Air 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 .150" (3.8 mm) for cutting and .100" (2.5 mm) for marking.
(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.
Aluminum - 70 Amps - Copper Electrode
Nozzle
BK277125
Retaining Cap
BK277153
Plasma Shield Postflow
(psi) (psi) (psi)
76 25 76
Plasma Shield Postflow
(psi) (psi) (psi)
76 25 76
Plasma Shield Postflow
(psi) (psi) (psi)
25 25 N/A
50 25 N/A
5-36
Electrode
BK277131
Swirl Ring
BK277142
Arc Travel Cutting
Voltage Speed Height
(volts) (ipm) (in)
130 250 .050
135 160 .070
145 80 .100
150 50 .060
155 40 .075
162 30 .115
Arc Travel Cutting
Voltage Speed Height
(volts) (mm/m) (mm)
129 6400 1.2
134 4420 1.7
145 1920 2.3
148 1440 1.7
156 975 2.0
160 820 2.6
Arc Travel
Voltage Speed
(volts) (ipm) (mm/min) (in)
135 250 6350 .096
69 100 2540 .120
Spirit II User's Manual
Torch Head
BK279100
Pierce Pierce Kerf
Height Time Width
(in) (msec) (in)
.150
100 .080
.175
.200 200
.085
.250 300
.275 400
.090
.300 500
Pierce Pierce Kerf
Height Time Width
(mm) (msec) (mm)
3.7
100 2.0
4.3
5.2
300 2.2
6.1
7.0
500 2.3
7.4
Marking Initial Pierce
Height Height Time
(mm) (in) (mm) (msec)
2.4 .100 2.5 0
3.0 .100 2.5 0