16
Tungsten electrode shape and the welding current range (DCEP)
tungsten
electrode
diameter /mm
sharpened of the
electrode
diameter/mm
angle of cone
（
°
）
background
current/A
pulse current
1.0
0.125
12
2
～
15
2
～
25
1.0
0.25
20
5
～
30
5
～
60
1.6
0.5
25
8
～
50
8
～
100
1.6
0.8
30
10
～
70
10
～
140
2.4
0.8
35
12
～
90
12
～
180
2.4
1.1
45
15
～
150
15
～
250
3.2
1.1
60
20
～
200
20
～
300
Notice: the above parameters originate from
《
Welding Dictionary
》
P149, Volume 1 of Edition 2.
TIG of stainless steel (single run welding)
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
0.8
Butt joint
1.0
1.6
5
20
～
50
66
1.0
Butt joint
1.6
1.6
5
50
～
80
56
1.5
Butt joint
1.6
1.6
7
65
～
105
30
1.5
Corner
joint
1.6
1.6
7
75
～
125
25
2.4
Butt joint
1.6
2.4
7
85
～
125
30
2.4
Corner
joint
1.6
2.4
7
95
～
135
25
3.2
Butt joint
1.6
2.4
7
100
～
135
30
3.2
Corner
joint
1.6
2.4
7
115
～
145
25
4.8
Butt joint
2.4
3.2
8
150
～
225
25
4.8
Corner
joint
3.2
3.2
9
175
～
250
20
Notice: the above parameters originate from
《
Welding Dictionary
》
P150, Volume 1 of Edition 2.
