Design and function
MMA welding
099-002061-EW501
05.05.2020
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5.2.2 Welding task selection
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Figure 5-12
5.2.3 Arcforce (welding characteristics)
During the welding process, arcforce prevents the electrode sticking in the weld pool with increases in
current. This makes it easier to weld large-drop melting electrode types at low current strengths with a
short arc in particular.
Electrode type allocation
Pos.
Electrode type
a)
R
Rutile
b)
RB/RC Rutile-basic and rutile-cellulose
c)
B
Basic
d)
C
Cellulose
Figure 5-13
The electrode characteristics you can select at the machine control are guiding values. Each characteris-
tic can be optimised according to electrode type and the related welding properties
> see 5.2.7 chapter
.
5.2.4 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 5-14
