Electrode Tip - Kemppi Flexlite TX Operating Manual

4.2 Electrode tip

DC welding
For DC TIG welding, grind the tip of the tungsten electrode lengthways, into cone shape. The sharpened electrode
tip provides a steady and concentrated arc into the weld piece. The sharpening angle and length has an effect on
the arc width and penetration depth.
Sharpening principle:
Where I = 1...5 x d.
The sharpening length best suited for your purposes depends on the most used welding current level:
a. Low currents
b. Mid currents
c. High currents
When sharpening the electrode, always grind along the electrode.
AC welding
In AC TIG welding the electrode tip temperature can exceed the melting point of the electrode. Therefore the elec-
trode diameter selected and its suitability for welding current applied, can be evaluated based on the formation of
the electrode tip.
a. Too low welding current or too big electrode size. The arc is not steady and directed on the weld piece.
b. Suitable current.
c. The welding current is too high for the electrode diameter selected.
© Kemppi
19
Flexlite TX
Operating manual - EN
1920910 / 2039