Function description
23
t
t
t
Fig. 7: Process for manual pulsing
4.6.11 End crater current l
e
The setting of the end crater current l
e
[4] is performed as described in Section
4.6.1. The end crater current is the welding current to which the welding current
is reduced when the welding process is ended. The setting is infinitely variable
between 10% and 100% of the selected current I
1
( for example: End crater
current 40% and welding current I
1
100A -> end crater current 40A). Selecting
the appropriate end crater current enables:
Prevention of notches and end crater cracks at the end of the weld seam due
to rapid cooling of the weld pool
Manual pulsing (see Section 4.6.10)
Welding with reduced current at the end of the weld seam at edges or for heat
accumulation
4.6.12 Gas post flow time
The setting for the gas post flow time [4] is performed as described in Section
4.6.1. The gas post flow time is the time after the arc extinguishes before the
protective gas valve closes. The post flow of protective gas protects the
workpiece and the tungsten needle from attack by oxygen in the atmosphere until
they have cooled down. The pre-selected gas post flow time is, however, only
effective when welding has taken place. The accidental actuation of the torch
trigger does not result in the running of the gas post flow. This gas management
function reduces gas consumption.
4.6.13 TIG spot welding time t
p
The settings for the TIG spot welding time t
p
[4] is performed as described in
Section 4.6.1. The TIG spot time is the time that the welding process is running
during TIG spot welding (see Section 4.7.3).
Gas valve
Welding current
Torch trigger 1
Содержание TIGER 180 AC/DC ULTRA
Страница 6: ...Introduction 6 1 2 General description Fig 1 TIGER Fig 2 TIGER with integrated Water cooling ...
Страница 58: ...Circuit diagram 58 11 Circuit diagrams Circuit diagram TIGER 230 AC DC ...
Страница 59: ...Circuit diagram 59 Circuit diagram TIGER 230 AC ...
Страница 60: ...Circuit diagram 60 Circuit diagram TIGER 180 AC DC ...
Страница 61: ...Circuit diagram 61 Circuit diagram TIGER 180 DC ...
Страница 63: ...Circuit diagram 63 Circuit diagram TIGER water cooling unit ...
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