－
28
－
9. WELDING PREPARATION
(Continued)
9.5.2 Example Welding Conditions for CO
2
Welding with Flux-cored Wires
(1) Example Welding Conditions of Horizontal Fillet
Leg
length
ℓ (mm)
Wire
diameter
Ø
(mm)
Welding
current
(A)
Welding
voltage
(V)
Travel
speed
(cm/min)
4
1.2
250
27
50
1.6
350
31
105
5
1.2
270
29
50
1.6
370
33
90
6
1.2
270
29
45
1.6
380
34
80
7
1.2
280
30
40
1.6
380
34
65
8
1.2
300
31
30
1.6
380
34
52
9
1.2
320
32
30
1.6
380
34
40
9.4.3 Example Welding Conditions of MAG Short Arc
Material: Soft steel, Gas: Mixture gas 80% Ar+20% CO
2
(10
～
15 L
/
min)
Joint
geometry
Plate
thickness
t (mm)
Wire
diameter
Ø (mm)
Gap
(mm)
Welding
current
(A)
Welding
voltage (V)
Travel
speed
(cm/min)
Butt Joint
1.0
0.8
～
1.0
0
50
～
55
13
～
15
40
～
55
1.2
0.8
～
1.0
0
60
～
70
14
～
16
30
～
50
1.6
0.8
～
1.0
0
100
～
110
16
～
17
40
～
60
2.3
0.9
～
1.2
0
～
1.0
110
～
120
17
～
18
30
～
40
3.2
0.9
～
1.2
1.0
～
1.5
120
～
140
17
～
19
25
～
30
4.0
0.9
～
1.2
1.5
～
2.0
150
～
170
18
～
21
25
～
40
