Kemppi MasterTig 235ACDC GM Operating Manual page 68

Base current
The lower current level of the pulse cycle. In TIG welding, its main tasks are to cool down the weld pool
and to maintain the arc.
C
Continuous welding
Normal TIG welding which doesn't have any pause times.
Current freezing
Welding current can be freezed to a certain level during downslope by pressing the trigger.
D
DC TIG
Direct current TIG welding process, where the polarity of the electrode is either positive or negative
throughout the welding process. Negative polarity (DC-) allows high penetration, whereas positive polar-
ity (DC+) is used only in special applications.
Double pulse
Double pulse TIG welding can be used for example to increase travel speed or to produce welds with
high visual requirements. The welding current is pulsed in two different frequencies: slow and fast. The
fast frequency makes the arc more focused, and the slow frequency produces a nice fish-scale appearance
to welds.
Downslope
Welding function that determines the time, during which the welding current gradually decreases to the
end current level. The value for the downslope time is preset by the user. The value zero means the func-
tion is off.
Downslope cut level
The point of welding current where the downslope ends.
H
HF ignition
Ignition mode in TIG welding. In HF ignition, a press on the torch trigger produces a high voltage pulse
that creates a spark to ignite the arc. The HF ignition mode must be activated in the control panel.
HF spark force
Adjusts the voltage of the high frequency spark used in ignition.
Hot start
Welding function that uses higher welding current at the start of the weld. After the Hot start period the
current drops to normal welding current level. The values for Hot start current level and its duration are
preset manually. This facilitates the start of the weld especially with aluminum materials.
I
Ignition current
Adjusts the current level of the negative ignition sequence (TIG).
© Kemppi
MasterTig 235ACDC, 325DC, 335ACDC
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Operating manual - EN
1920900 / 1939