Khz Pulses (Metallurgic Pulses); Automated Pulses - EWM TETRIX 351 AC/DC COMFORT activArc Operating Instructions Manual

Functional characteristics
TIG welding
5.2.7.2

KHz pulses (metallurgic pulses)

The kHz pulses (metallurgic pulses) use the plasma pressure produced at high currents (arc pressure)
which is used to achieve a constricted arc with concentrated heat feeding. The frequency can be infinitely
adjusted from 50 Hz to 15 kHz and the pulse balance from 1-99 %.
In contrast to thermal pulses, the pulse edge times are not required.
The pulse process continues during the up-slope and down-slope phases!
Operating
element
Puls
Automatic
sec
kHz
AC
special
5.2.7.3

Automated pulses

The automated pulses are used with tacking and spot welding of workpieces in particular.
An oscillation in the molten pool is produced by the current-dependent pulse frequency and balance,
which positively influences the ability to bridge the air gap. The pulse parameters required are
automatically specified by the machine control.
Operating
element
Puls
Automatic
sec
kHz
AC
special
42
Figure 5-11
Action Result
Select kHz pulses
Press the "TIG pulses" button until the
sec
signal light lights up in red
kHz
Select balance
Setting range: 1% to 99% (1% increments)
Select frequency
Setting range: 50 Hz to 15 kHz (0.01 kHz increments)
Action Result
Select TIG automated pulses
Press the "TIG pulses" button until the
TIG automated pulses signal light
NOTE
Display
-
comes on
Item No.: 099-000108-EWM01