Design and function
TIG welding
099-000109-EW501
23.08.2018
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5.3.13 Pulse welding
The following pulse types can be selected:
• Automated pulsing (TIG DC)
• Thermal pulsing (TIG AC or TIG DC)
• Metallurgical pulsing (TIG DC)
• AC special (TIG AC)
5.3.13.1 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 automati-
cally specified by the machine control.
Figure 5-31
5.3.13.2 Thermal pulsing
The operation sequences basically match the standard welding sequences, but there is an additional
switching back and forth between the main current AMP (pulse current) and the secondary current AMP%
(pulse pause current) at the set times. Pulse and pause times and the pulse edges (
and
) are en-
tered in seconds on the control.
Figure 5-32