Paton StandardMIG -200, Data Sheet And Operating Manual

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PATON StandardMIG MMA/TIG/MIG/MAG
Remember that a very sharp‐pointed electrode flashes off very easily at high arc
currents due to low heat emission. In addition, sharpening notches shall be located
along the electrode axis.
4.1 WELDING CYCLE – TIG-LIFT
See Clause 6.1 for sequence of changing the value of any function in the
current welding mode.
4.2 TIG‐LIFT ARC STRIKING FUNCTION
This function is installed by default in this model of equipment and is designed
for torches with contact arc striking, without use of high‐frequency injection units
and other similar units. However, unlike the conventional method, it completely
eliminates surge current at the moment of striking, thus reducing the several‐fold
destruction of the non‐consumable tungsten electrodes and ingress of its
inclusions into the weld, which is very adverse effect.
Attention!!! This requires cleaning the work piece at the point of the arc
striking.
This function is implemented by touching the work piece with the electrode.
The user can keep the electrode in this position for an unlimited time, and when
he/she decides that he/she is ready to proceed with welding (for example: he/she
has covered the eyes with a headshield and sufficiently purged the place of welding
with shielding gas), it is enough to start SLOWLY lifting the tip of the sharpened
electrode from the work piece. The machine will detect this moment and take it as
a signal to start the welding process. Thus, it will start FADING arc current up to the
set value. The higher is base operating current, the faster the electrode shall be
lifted, and otherwise it will flash off. Time of current fade‐in [t.uP] up to the set
value will be reviewed in the next paragraph.
t, s