EWM Tetrix 300 - Khz Pulses (Metallurgic Pulses); Automated Pulses

Design and function
TIG welding
52
099-000121-EW501
29.06.2015
5.9.13.2 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!
Figure 5-26
Operating
element
Action
Result
Display
Select kHz pulses
Press the "TIG pulses" button until the
signal light lights up in red
-
Select balance
Setting range: 1% to 99% (1% increments)
Select frequency
Setting range: 50 Hz to 15 kHz
5.9.13.3 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
Action
Result
Select TIG automated pulses
Press the "TIG pulses" button until the
TIG automated pulses signal light comes on