Pulse Welding; Automated Pulses; Thermal Pulsing - EWM T4.02 Operating Instructions Manual

Functional characteristics
TIG welding
5.1.8

Pulse welding

The following pulse types can be selected:
• Automated pulsing (TIG DC)
• Thermal pulsing (TIG AC or TIG DC)
• Metallurgical pulsing (TIG DC)
• Average value pulses
• AC special (TIG AC)
5.1.8.1

Automated pulses

The automated pulsing pulse variant is only activated for DC welding in combination with the spotArc ope-
rating mode. The current-dependent pulse frequency and balance create vibrations in the weld pool that
have a positive effect on the gap bridging. The required pulse parameters are automatically defined by
the machine control. If required, the function can be disabled by pressing the pulsed welding push-button.
Selection
5.1.8.2

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 are entered at the control in seconds.
Selection
28
Figure 5-19
Figure 5-20
Figure 5-21
099-00T402-EW501
02.07.2020