LOKERMANN Grand Tig 200, Руководство пользователя

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P ulse mode ‘off’ indicator (11)
Pulse mode ‘On’ indicator (12)
Clean Width Area/ AC Balance Adjustment (13)
Only available in AC welding mode (27,28,29). Adjusts the balance as a percentage
between the forward and reverse current cycles when welding in AC output mode.
The reverse part of the AC cycle gives the ‘cleaning’ effect on the weld material,
while the forward cycle melts the weld material. Neutral setting is 0. Increased
reverse cycle bias will give greater cleaning effect, less weld penetration and more
heat in the torch tungsten, which gives the disadvantage of reducing the output
current that can be used for a given tungsten size, to prevent the tungsten
overheating. Increased forward cycle bias will give the opposite effect, less
cleaning effect, greater weld penetration and less heat in the tungsten.
For maximum effectiveness, ideally the clean width/ AC balance should be set with
as much forward cycle bias as possible, while still maintaining a sufficient level of
oxidisation removal for a contamination free weld pool. Cleaner non-ferrous
metal is before welding, the more effective it is to weld. This effect can also be used
to reduce heat in the tungsten, allowing use of a pointed tungsten tip shape for a
more defined arc. setting range (-5-+5).
AC Frequency Adjustment (14)
Only available in AC welding mode (27,28,29). Increasing AC frequency will focus
the shape of the arc, resulting in a tighter, more controlled arc causing increased
penetration and less heated affected area for the same current setting. Slower f
requency will result in a wider, softer arc shape. Unit(Hz) and setting range
(50-250Hz).
AC/DC Output Modes
DC (Direct Current) Welding Output (26)
Suitable for TIG welding ferrous (iron based) metals such as mild steel and stainless
steel, copper and titanium. TIG welding reactive metals such as Aluminium,
Magnesium and Zinc requires AC (alternating current) output. When reactive
metals are exposed to air they form an oxide layer that insulates the base metal
and prevents welding current flowing, it also contaminates the weld pool. Reverse
current flow is required to break through/ clean off this oxide layer so that welding
can take place, while the current flow during the positive cycle does the majority of
the heating of the weld pool area.
AC Triangle Wave Welding Output (27)
Reduced heat input for same current setting. Especially useful for welding thin metal.
AC Sine Wave Welding Output (28)
Traditional AC TIG welding wave form. Quieter, ‘soft’ arc characteristic.
AC Square Wave (28)
Focused arc for maximum penetration, fast travel speed with best directional control.
TIG Arc Starting Modes.