Tig Antistick; Activarc - EWM Tetrix 351 AW FW Operating Instructions Manual

Design and function
TIG welding

5.9.14 TIG antistick

The function prevents uncontrolled re-ignition following the sticking of the tungsten electrode in the weld
pool by switching off the welding current. In addition, wear at the tungsten electrode is reduced.
After triggering the function the machine immediately switches to the gas post-flow process phase. The
welder starts the new process again at the first cycle. The user can switch the function on or off
(parameter

5.9.15 activArc

The EWM activArc process, thanks to the highly dynamic controller system, ensures that the power
supplied is kept virtually constant in the event of changes in the distance between the welding torch and
the weld pool, e.g. during manual welding. Voltage losses as a result of a shortening of the distance
between the torch and molten pool are compensated by a current rise (ampere per volt - A/V), and vice
versa. This helps prevents the tungsten electrode sticking in the molten pool and the tungsten inclusions
are reduced.
ENTER
Parameter setting
The activArc parameter (control) can be adjusted specifically for the welding task (panel
thickness) > see 5.9.16 chapter.
64
) > see 5.18 chapter.
Figure 5-50
EXIT
4s
099-000118-EW501
24.11.2017