Jasic TIG 200 AC/DC Digital Series, Руководство оператора

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Cleaning strength (100%*Tc/Tp): Generally, in AC welding,
when taking the electrode as the anode, the current is called
the cathode current. Its main function is to break up the
oxidized layer of the work piece, and the cleaning strength is
the percentage cathode current holding in the AC period.
This parameter is 10~40% commonly. When the value is
smaller, arc is concentrated, the molten pool is narrow and
deep, and when it is larger, the arc is spread, the molten pool
is wide and shallow.
AC pulsed TIG welding
tc-Cathode current time, tp-AC period
Tp-Pulsed peak current time, T-Pulse period
Current change in AC pulsed TIG welding
AC pulsed TIG welding is almost the same as AC square
wave TIG welding, and what makes them di
ff erent is that in
AC pulsed TIG welding, the welding current varies with the
pulse peak current and base current. For the AC square
wave parameter selecting and setting, please refer to the
corresponding contents in AC square wave TIG welding. For
the pulse frequency and pulse duration ratio, users may refer
to the corresponding contents in DC pulsed TIG welding.
The pulse frequency (1/T) can be adjusted between 0.5Hz
and 5Hz. The pulse duration ratio (Tp/T) can be adjusted
between 10% and 90%.
TIG spot welding
Select TIG operation mode 1 and TIG spot welding function
can be achieved. Spot welding is available in all the four TIG
welding modes. Please note that the spot welding time is
1/10 of the upslope time, and that the upslope time is still
the pre-set value. For current change in DC TIG spot
welding, pulsed TIG spot welding, AC TIG spot welding and
AC pulsed TIG spot welding; please refer to the figures
below. In AC mode, the pre-set value of spot welding current
is approximately the absolute average of welding current.
C u r r e n t
change in
D C T I G
s p o t
welding
C u r r e n t
change in
p u l s e d
TIG spot
welding
C u r r e n t
change in AC
T I G s p o t
welding
Current change
in AC pulsed TIG
spot welding
Complex waveform TIG welding
Ib
Ip Id
T2
T2
!
Current change in complex waveform DC pulsed welding
This machine can provide complex waveform TIG welding
through programming. Special pulsed welding can be
obtained in DC TIG mode, dual-pulse welding can be
obtained in pulsed TIG mode, and variable polarity pulsed
welding can be obtained in AC TIG mode. To obtain complex
waveform TIG welding, it is necessary to select the
appropriate TIG operation mode or reprogram the TIG
operation mode according to the appendix Programming
Guide for Users (TIG mode). Take complex waveform DC
pulsed welding for example. By adding a pulsed current with
15
!
!