Yeswelder CT2050, Operator'S Manual

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AC Pulse TIG Welding
Fig 17 AC Pulse TIG Current Change Waveform
AC pulse 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, peak current, and base current is generated because the welding current is con-
trolled by a low-frequency pulse. The preset peak current and base currents 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%.
tc-Cathode Current time, tp-AC Period
Tp-Pulsed Peak Current Time, T-Pulse Period
tu Tp
T
tc
tp
td
Process Parameter Description 220V 110V Default
AC Pulse TIG
PRE GAS Pre-flow 0.1~15s 0.1~15s 0.3s
Istart Initial Current 5~160A 5~80A 15A
SLOPE UP UpSlope Time 0~10s 0~10s 0s
I1 Peak Current 5-200A 5~160A 50A
I2 Background Current I1*10%-I1 A I1*10%-I1 A 50A
PULSE(Hz) Crater Current 0.2-200Hz 0.2-200Hz 0.5Hz
DUTY CYCLE (I1:I2) Post-flow 10%-90% 10%-90%
SLOPPE DOWN Downslope Time 0-15s 0-15s 0s
Istop Crater Current 5-200A 5-100A 15A
POST GAS Post-flow 0.1-15s 0.1-15s 2s
AC Hz AC Frequency 20-250Hz 85Hz
AC BALANCE Clearance Width
5-99A: 20-80%
100-200A: 20-65%
5-99A: 20-80%
100-160A: 10-65%
AC Pulse TIG
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