Welding Polarity Connection Way - gala gar SMART PRO 5.0 Manual Técnico De Instrucciones

3.3 Welding polarity connection way

3.3 Welding polarity connection way
3.3 Welding polarity connection way 3.3 Welding polarity connection way
MMA MMA MMA MMA
SMART PRO 5.0
Welding holder
electrode
workpiece
DCEN
Choosing the connection of DCEN or DCEP is based on the arc stable burning condition. The different
electrodes need different connection way. Please refer to the electrode manual.
TIG TIG
TIG TIG
Ar
DCEN
1、 Place the welding
gun aslant.
Steps of scraping arc
Stricking arc of TIG operation：when tungsten electrode touches the workpiece，the short-circuit current is
only 28A . After generating arc, current can rise to the setting welding current.If the tungesten electrode
touches the workpiece when welding, the current will drop to 5A within 2s, which can reduce the tungsten
spoilage farthestly，prolong the using life of the tungsten electrode，and prevent tungsten clipping.
SMART PRO 5.0
SMART PRO 5.0 GM-3150
GM-3150
SMART PRO 5.0
Welding gun
Workpiece
2、 Scrape the electrode
with the workpiece.
GM-3150
Welding holder
electrode
workpiece
DCEP
● When TIG operation,
the shielded gas is
inputted to welding gun
directly, and the method
of lifting arc is scraping
arc.
3、 Lift arc.
2 ～ 4mm
Pág. 29