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6.4 Technology
Table 7 GMAW technical requirement (for reference only)
Thickness
(
m m
)
Wire
Diamete
r
( mmΦ)
Bottom
Clearance
G
(
mm
)
Welding
Current
(
A
)
Welding
Voltage
(
V
)
Weldin
g Speed
(cm/mi
n)
Operate
Clearance
(
mm
)
Gas
Flow
(
L/min
)
L
O
W
S
P
E
E
D
0.8
0.8,0.9
0
60
70
16
16.5
50
60
10
10
1.0
0.8,0.9
0
75
85
17
17.5
50
60
10
10
15
1.2
0.8,0.9
0
80
90
17
18
50
60
10
10
15
1.6
0.8,0.9
0
95
105
18
19
45
50
10
10
15
2.0
1.0,1.2
0
0.5
110
120
19
19.5
45
50
10
10
15
2.3
1.0,1.2
0.5
1.0
120
130
19.5
20
45
50
10
10
15
3.2
1.0,1.2
1.0
1.2
140
150
20
21
45
50
10
15
10
15
4.5
1.0,1.2
1.0
1.5
170
185
22
23
40
50
15
15
6.0
surface
1.2
1.2
1.5
230
260
24
26
40
50
15
15
20
inner
1.2
1.2
1.5
230
260
24
26
40
50
15
15
20
9.0
surface
1.2
1.2
1.5
320
340
32
34
40
50
15
15
20
inner
1.2
1.2
1.5
320
340
32
34
40
50
152
15
20
F
A
S
T
S
P
E
E
D
0.8
0.8,0.9
0
89
16.5
120
10
15
1.0
0.8,0.9
0
100
17
120
10
15
1.2
0.8,0.9
0
110
18
120
10
15
1.6
1.0,1.2
0
160
19
120
10
15
2.0
1.0,1.2
0
180
20
80
15
15
2.3
1.0,1.2
0
200
22
100
15
20
3.2
1.2
0
240
25
100
15
20
Thick
ness
(mm)
Welding
Length
(mm)
Wire
Diameter
(mm
)
Welding
Current
(A)
Weldin
g
Voltage
(V)
Weldin
g Speed
(cm/min)
Weldi
ng
Distanc
e (mm)
Posit
ion A
or B
Gas
Flow(L/
min)
L
O
W
S
P
E
E
D
1.0
2.5
3
0.8
,
0.9
70
80
17
18
50
60
10
A
10
15
1.2
3
3.5
0.9
,
1.0
85
90
18
19
50
60
10
A
10
15
1.6
3
3.5
1.0
,
1.2
100
110
18
19.5
50
60
10
A
10
15
2.0
3
3.5
1.0
,
1.2
115
125
19.5
20
50
60
10
A
10
15
2.3
3
3.5
1.0
,
1.2
130
140
19.5
21
50
60
10
A
10
15
3.2
3.5
4
1.0
,
1.2
150
170
21
22
45
50
15
A
15
20
4.5
4.5
5
1.0
,
1.2
180
200
23
24
40
45
15
A
15
20
6
5
5.5
1.2
230
260
25
27
40
45
20
A
15
20
8
,
9
6
7
1.2
,
1.6
270
380
29
35
40
45
25
B
20
25
F
A
S
T
S
P
E
E
D
12
7
8
1.2
,
1.6
300
380
32
35
35
40
25
B
20
25
1.0
2
2.5
0.8
,
0.9
140
19
20
150
10
A
15
1.2
3
0.8
,
0.9
140
19
20
110
10
A
15
1.6
3
1.0
,
1.2
180
22
23
110
10
A
15
20
2.0
3.5
1.2
210
24
110
15
A
20
2.3
3.5
1.2
230
25
100
20
A
25
3.2
3.5
1.2
260
27
100
20
A
25
4.5
4.5
1.2
280
30
80
20
B
25
6
5.5
1.2
300
33
70
25
B
25