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Direct Current Electrode Negative (DCEN): Suitable for acid electrode
welding(as shown in the figure above).
Direct Current Electrode Positive (DCEP): Suitable for alkaline and
cellulose electrode welding.
No.
Item
No.
Item
1
Welding machine
3
Earth clamp
2
Electrode holder
4
Work piece
5. Suggested Settings for MMA Welding
6. Suggested settings for MIG welding
:
Electrode diameter
(
mm
)
Welding current range
(
A
)
Welding Voltage range
(
V
)
Φ2.0
40~65
21.6~22.6
Φ2.5
50~90
22.0~23.6
Φ3.2
90~130
23.6~24.2
Φ4.0
140~180
24.6~27.2
Φ5.0
180~220
27.2~28.8
Plate
thickness
(
mm
)
Wire
diameter
(
mm
)
Amperage
(A)
Voltage
(V)
Wire
speed
(cm/min)
Free
wire
length
(
mm
)
Gas
flow
(L/min)
I s
qu
ar
e
bu
tt
w
el
d
0.8
0.8
、
0.9
60~70
16~16.5
50~60
10
10
1.0
0.8
、
0.9
75~85
17~17.5
50~60
10
10~15
1.2
0.8
、
0.9
80~90
17~17.5
50~60
10
10~15
1.6
0.8
、
0.9
95~105
17~18
45~50
10
10~15
2.0
1.0
、
1.2
110~120
18~19
45~50
10
10~15
2.3
1.0
、
1.2
120~130
19~19.5
45~50
10
10~15
3.2
1.0
、
1.2
140~150
20~21
45~50
10~15
10~15
4.5
1.0
、
1.2
160~180
22~23
45~50
15
15
1.2
220~270
24~28
45~50
15
15~20
Содержание MIG-250TD
Страница 32: ...31 4 Circuit Diagram...