PATON
StandardMIG
MMA/TIG/MIG/MAG
-12 -
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, welding current increases by the default value
of +40% for a short time.
Example: welding with a Ф3 mm electrode, set the base value of arc current is
90 A.
Result: hot start current is 90A + 40% = 126A.
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
good mains are not available, striking process can even abort. See Clause 6.1 for
sequence of changing the value of any function in the current welding mode.
3.3 ARC FORCE FUNCTION
Advantages:
‐ enhanced short‐arc welding stability;
‐ better transfer of metal drops into the weld pool;
‐ better arc striking;
‐ reduced risk of electrode sticking; however, it is not the Anti‐Stick function, which
will be explained in the next clause;
‐ manual adjustment: allows setting the function level to minimum value, thus
reducing power consumption (although insignificantly), as well as heat input
concentration when welding thin metal pieces. This reduces the risk of
Summary of Contents for StandardMIG -200
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