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1.0
1.6
1.6
2.4
2.4
3.2
Workpiece
Joint
thickness
form
/mm
0.8
Butt joint
1.0
Butt joint
1.5
Butt joint
Corner
1.5
joint
2.4
Butt joint
Corner
2.4
joint
3.2
Butt joint
Corner
3.2
joint
4.8
Butt joint
Corner
4.8
joint
Notice: the above parameters originate from《Welding Dictionary》P150, Volume 1 of Edition 2.
Parameters of piping back sealing welding for mild steel
Piping
Tungsten
diameter
electrode
Φ/mm
diameter/mm
38
2.0
42
2.0
60
2.0
76
2.5
MAINTENANCE &TROUBLESHOOTING
0.25
0.5
0.8
0.8
1.1
1.1
TIG of stainless steel (single run welding)
tungsten
welding wire
electrode
diameter/mm
diameter/mm
1.0
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
2.4
1.6
2.4
1.6
2.4
1.6
2.4
2.4
3.2
3.2
3.2
Welding
Gas nozzle
wire
diameter/mm
diameter/mm
8
2
8
2
8
2
8～10
2.5
29
20
25
30
35
45
60
Argon gas
welding
flow rate/
current
-1
L·min
(DCEP)
5
20～50
5
50～80
7
65～105
7
75～125
7
85～125
7
95～135
7
100～135
7
115～145
8
150～225
9
175～250
（DCEP）
Welding
Arc
current/A
voltage/V
75～90
11～13
75～95
11～13
75～100
11～13
80～105
14～16
5～30
8～50
10～70
12～90
15～150
20～200
Welding
speed/
-1
cm·min
66
56
30
25
30
25
30
25
25
20
Argon
Welding
flow rate
rate
/
/
-1
-1
L·min
cm·min
6～8
4～5
6～8
4～5
7～9
4～5
8～10
4～5
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Troubleshooting
