Lincoln Electric SPIRIT II 275 Technical Manual page 113

Spirit II User's Manual
Air Plasma / Nitrogen Shield / Air Preflow & Postflow
Shield Cap
BK277263
Outer Cap
BK284150
Imperial*
Material
Preflow
Thickness
(in) (psi)
3/8
1/2
5/8
3/4 20
1.00 **
1.25 **
1.50 **
Metric*
Material
Preflow
Thickness
(mm) (psi)
10
12
16
20 20
25 **
32 **
38 **
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 .275" (7.0 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.
Aluminum - 275 Amps - Silver Electrode
Nozzle
BK279469
Retaining Cap
BK277266
Plasma Shield Postflow
(psi) (psi) (psi)
73 65 75
Plasma Shield Postflow
(psi) (psi) (psi)
73 65 75
Plasma Shield Postflow
(psi) (psi) (psi)
25 25 N/A
50 25 N/A
5-51
Section 5: Torch Consumables and Cutting Charts
Electrode
BK279450
(red o-ring)
Swirl Ring
BK279458
Arc Travel Cutting
Voltage Speed Height
(volts) (ipm) (in)
160 160 .160
165 125 .180
168 105 .190
172 85 .200
180 60 .240
185 45 .260
190 25 .270
Arc Travel Cutting
Voltage Speed Height
(volts) (mm/m) (mm)
160 3930 4.1
163 3375 4.4
168 2645 4.8
173 2055 5.3
179 1565 6.0
185 1120 6.6
189 645 6.8
Arc Travel
Voltage Speed
(volts) (ipm) (mm/min) (in)
108 250 6350 .100
56 100 2540 .120
Torch Head
BK279060
Pierce Pierce Kerf
Height Time Width
(in) (msec) (in)
.275 400
.160
.300 500
.350 600
.165
800
.400 .170
1000
.180
Pierce Pierce Kerf
Height Time Width
(mm) (msec) (mm)
7.1
500 4.1
7.4
8.9
800 4.2
10.2 4.3
1000
4.6
Marking Initial Pierce
Height Height Time
(mm) (in) (mm) (msec)
2.5 .100 2.5 0
3.0 .100 2.5 0