MMA welding
Item
Letters
1
HS
tHS
1
IP
2
3
AF
Pulsed MMA welding – the welding current oscillates between a high and a low current value allowing less
thermal input in thinner plates and greater arc control in the most demanding positions (vertical ascending).
Item
Letters
IB
4
5
UTH
Fre
6
- Adjust the current value to the diameter of the electrode (Fig.2 - 2), according to the following table, to
adjust the machines according to the electrode to be used and start welding
Electrode diameter (mm)
Adjusting current scope (Amp)
- Start welding.
(See items in Fig. 2)
Parameter
Hot Start
Percentage increase in current value in relation to Ip (main
current), applied at ignition and start of welding.
Time Hot
Time elapsed since the start of welding in which the "Hot Start"
Start
value must be valid.
I
/ I
Adjust the main current value.
2
p
Arc Force
To prevent the electrode from sticking to the workpiece during
welding, vary the Arc Force current amplitude in relation to the
main current. For values with a (-) sign, the Arc Force transition will
be rougher. For values with a (+) sign, the Arc Force transition will
be smoother.
Parameter
I
Adjust welding base current in percentage of main current.
b
WIDTH
Adjust width of the peak current (main)
PULSE
Adjust the pulse frequency.
FREQUENCY
Æ 2,0
50 - 70
Description
Description
Æ 2,5
Æ 3,2
Æ 4,0
60 - 100
80 - 150
130 - 200
Æ 5,0
Æ 6,0
150 - 260
200 - 360
12