Tungsten Balling Function; Ac Balance (Optimise Cleaning Effect And Penetration Characteristics) - EWM Tetrix 352 AC/DC Synergic Operating Instructions Manual

Design and function
TIG welding task definition
5.2.5.1

Tungsten balling function

Tungsten balling ensures optimum ignition and welding results for AC welding.
Optimum tungsten balling requires a sharpened electrode (about 15–25°) and the set electrode diameter
on the machine control. The set electrode diameter affects the current for tungsten balling and, conse-
quently, also the ball size.
Tungsten balling should be performed on a test component as surplus tungsten may be melted and this
may lead to impurities on the weld seam.
EXIT
5.2.5.2

AC balance (optimise cleaning effect and penetration characteristics)

It is important to choose the right time relationship (balance) between the positive phase (cleaning effect,
balled end size) and the negative phase (penetration depth). This may differ from the factory setting de-
pending on the material and task. This requires the AC balance setting. The default setting (factory set-
ting, zero setting) of the balance is 65 % and always refers to the negative half-wave. The positive half-
wave is adjusted accordingly (negative half-wave = 65 %, positive half-wave = 35 %).
42
mm
inch
Balling
Figure 5-21
Figure 5-22
099-000140-EW501
30.01.2024