Jasic TIG200 - MMA Manual Welding Mode Selection

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7.1.2 Select manual welding mode
Figure 7-2 MMA panel display
The rotary encoder can adjust the welding current, hot start current and arc force current
parameters.
Welding current: The current of the arc section during welding, which is set by the user based
on the type and diameter of the welding electrode and the process requirements. Refer to
Table 7-1:
Table 7-1 Selection of welding electrode diameter and welding current
No.
Workpiece
thickness (mm)
Welding electrode
diameter range (mm)
Welding electrode
diameter (mm)
Welding
current (A)
1
1.6
25~40
2
≤4
2.0~3.2
2.0
40~65
2.5
50~80
3.2
100~130
3
4~12
3.2~4.0
3.2
100~130
4.0
160~210
4
＞12
≥4
5.0
200~270
6.0
220~300
Arc-force: The arc force value should be determined according to welding electrode diameter,
current setting, and process requirements. With large arc force current, the metal transfers
quickly and the droplets don’t stick, but excessive current increases spatter; low current leads
to small spatter and good weld seam formation, but sometimes the arc is soft, or causes
droplets to stick. In particular, thick electrodes with low current welding require increased arc
force. Generally, the current is 0-40.
Hot start current: Stronger hot start current is conducive to arc start and reduces sticking
between the welding electrode and workpiece during arc start. The magnitude of hot start
current is generally determined based on the type, specification, and welding current of the