17
The selective range of Gas nozzle diameter and protective gas flow rate
Tungsten electrode shape and the welding current range (DCEP)
TIG Welding of Stainless Steel (single run welding)
10~100
1.0
0.8
1.6
1.5
101~150
1.0
1.0
2.4
2.4
3.2
151~200
1.6
1.5
2.4
2.4
4.8
3.2
3.2
4.8
4~9.5
0.125
Butt Joint
Butt Joint
Butt Joint
Butt Joint
Butt Joint
Butt Joint
Fillet
Fillet
Fillet
Fillet
0.8
8~9.5
2~15
5
10~70
7
4~5
12
1.0
1.6
30
1.6
1.6
6~8
2~25
2~50
66
10~140
75~125
25
4~9.5
0.25
0.8
9.5~11
5~30
5
12~90
7
7
4~7
20
1.6
1.6
35
1.6
2.4
1.6
2.4
7~10
5~60
50~80
56
12~180
85~125
30
115~145
25
6~13
0.5
1.1
1.1
11~13
8~50
7
15~150
7
8
20~200
7
9
6~8
25
1.6
1.6
45
1.6
2.4
2.4
3.2
60
1.6
2.4
3.2
3.2
7~10
8~100
65~105
30
15~250
95~135
25
150~225
25
20~300
100~135
30
175~250
20
Welding current
range/A
DC Positive Connection
Alternating Current
Gas nozzle diameter /mm
Gas nozzle diameter /mm
Gas flow rate /L•min-1
Gas flow rate /L•min-1
Tungsten electrode
diameter /mm
Workpiece
thickness
/mm
Joint form
Tungsten
electrode
diameter/mm
Welding wire
diameter
/mm
Argon gas
flow rate/
L-min-1
Welding
current
(DCEP)
Welding
speed
/cm-min-1
Sharpened of the
electrode diameter
/mm
Angle of cone (°
Background
current/A
Pulse current
3.1 TIG Parameters
