Paton ProMIG-200, Руководство пользователя

Страница: 99 / 130

PATON ProMIG DC MMA/TIG/MIG/MAG
- 98 -
3.1 WELDING PROCESS CYCLE - MMA
See paragraph 6.1 for the procedure for switching the value of any function
3.2 “HOT - START” FUNCTION
Advantages:
- improved striking even when using poorly ignited electrodes;
- better penetration of the base material during striking, therefore, less lack of penetration;
- prevention of slag inclusions;
- manual setting: allows you to set the function level to the minimum value, which greatly
reduces power consumption at the initial moment of striking. This allows the unit to start
at mains voltage values close to the minimum possible ones, but reduces the quality of the
moment of striking (the unit becomes similar to a transformer source, but it is the only
possible way in certain situations). You can also increase the function to the maximum
value to further improve the striking timing (when using good mains). However, do not
forget that the increased current of this function can burn through the workpiece when
welding thin metals, thus, we recommend reducing the "Hot start" function current in this
case.
What helps to achieve this: for a short time at the moment of arc striking, the
welding current increases by the default level of +40%.
Example: welding with Ø3 mm electrode, the set main value of the welding current
is 90A.
Result: The hot start current will be 90A + 40% = 126A.
In the advanced settings, you can change both the
“Hot Start” power [H.St], and the
“Hot Start” time [t. HS]. If necessary, do not increase the power and trigger time of the “Hot
Start” too much, because it requires a very strong power supply mains at high limit values,
and in the absence of good mains, the striking process will fail. See paragraph 6.1 to change
the value of any function in the current welding mode
3.3 “ARC - FORCE” FUNCTION
Advantages:
- increasing the stability of short-arc welding;
- improved drop of metal transfer into the weld pool;
- improved arc striking;
t, sec