PATON
ProMIG series
DC MMA/TIG/MIG/MAG
- 10 -
Attention:
Once the power switch is set to position "I" in the MMA welding mode,
the stick electrode becomes energized. Do not touch conductive or earthed objects,
such as, for example, welding machine frame etc., with the electrode, since the
machine will take this as a signal to start the welding process.
3.1 WELDING CYCLE
–
MMA
See paragraph 6.1 for sequence of changing the value of any function
3.2 HOT START FUNCTION
Advantages:
- improved striking even when using electrodes with bad striking properties;
- better penetration of base material during striking and, consequently, less poor
penetrations;
- prevention of slag inclusions;
- manual adjustment; allows setting the function level to minimum value, thus
significantly reducing power consumption in the initial moment of striking. This
allows starting the source at values of mains voltage around the possible minimum
value, but compromises the quality of the striking moment (the machine becomes
similar to a transformer source, but in some cases this is the only possible
method). The function can also be increased to maximum value for even better
quality of the striking moment (if the machine is operated from good power
mains). However, keep in mind that boosted current of this function can burn
through the work piece when welding thin metal pieces, so it is recommended to
reduce the Hot Start value in such a case.
The result is achieved by the following means:
In the moment of arc striking, arc current increases by the default value of +40%
for a short time.
Example: welding with a
Ф
3 mm electrode, set base value of arc current is 90 A.
Result: hot start current is 90 A + 40% = 126 A.
In the additional settings, you can change both Hot Start magnitude [H.St] and
Hot Start time [t.HS]. Do not set Hot Start magnitude and time to unnecessarily high
values, since large limit values required for very strong power supply mains, and if
t,s
