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Smart Tig 310 P ACDC
Pág. 45
5.5.5 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 different is that
in AC pulsed TIG welding, the welding current varies with the pulse and peak current and base current are
generated because the welding current is controlled by a low frequency pulse. The preset peak current and base
current are the low frequency pulse peak value (average value) and base value (average value) respectively. 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) is a little low, and it can be adjusted between 0.5Hz and 5Hz.
The pulse duration ratio (Tp/T) can be adjusted between 10% and 90%.
5.5.6 TIG spot welding
Select TIG operation mode 1 (refer to Section 5.6), 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 preset 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 preset
value of spot welding current is approximately the absolute average of welding current, other than the peak value.
Current change in DC TIG spot welding
Current change in pulsed TIG spot welding