Welding procedure
MMA welding
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099-00L105-EW501
07.06.2019
6.3 MMA welding
6.3.1 Hotstart
The function hot start ensures a secure igniting of the arc and a sufficient heating to the still cold parent
metal at the beginning of the welding process. The ignition takes place here with increased current (hot
start current) over a certain time (hot start time).
A = Hot start current
B = Hot start time
C = Main current
I =
Current
t =
Time
Figure 6-24
6.3.2 Antistick
The Antistick feature prevents the electrode from annealing.
Should the electrode stick despite the Arcforce feature, the machine
automatically switches to the minimum current within approx. one se-
cond. This prevents the electrode from annealing. Check the welding
current setting and correct for the welding task in hand.
Figure 6-25
6.4 Air arc gouging
During gouging, an arc burns between a carbon electrode and the workpiece, heating the workpiece until
it is molten. At the same time, the molten metal is blown out with compressed air. Special electrode hol-
ders with a compressed-air connection and carbon electrodes are required for gouging.
