Paton ProTIG-200, User Manual

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PATON ProTIG DC TIG/MMA
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2. "Preflow"- time before blowing – 2 s.
3. "Start current" – 30 А .
4. "Rise time" – time of current rise – 1 s.
5. "Main current" – main welding current – 100 А .
6. "Fall time" – 1 s.
7. "Finish current" – 30 А .
8. "Postflow" – time after blowing – 5 s.
9. "Pulse balance" – balance of pulses shape – 50%.
10. "Pulse frequency" – 150 Hz.
11. "Low current" – lower current of pulsed mode – 50 А .
12. "Balance" – 50%.
13. "Frequency" – 50 Hz.
14. "Pulse mode" – pulsed mode, ON.
Pay attention!! In order to activate the pulsed mode, it is necessary to change the value of
the "Pulse mode" parameter to "ON", after which the indicator 8 must change the value to
"P" (pulses mode is on). Also, the "Pulse frequency" parameter should be at least twice as
high as the "Frequency" parameter. In case of failure to do so, the process will be poor.
After that, welding can be started. The value of actual welding current will range from 50A
to 100 A with a periodicity of 150 oscillations per 1 second.
These parameters are set in different situations differently, according to the
requirements of the welder.
4.2 Cyclogram of TIG DC welding
Symbols:
-
Тр – blowing time before welding. Required for preblowing a welding area, torch
nozzle, guaranteed protection before arc ignition;
- Іс – starting current. After preblowing, the arc is ignited on the starting current and
during the time Tп it rises to Iзв and is used mainly for smooth heating of the workpiece
edge to prevent its flashing;
- Тп – time of current rise;
- Ізв – main welding current;
- Тс – time of welding downslope; After end of welding, the main welding current is
gradually reduced to Іzk within Тс. It is used for crater rewelding.
- Іzk – end current (crater rewelding);
- В – balance of pulses polarity;
- F – pulses frequency;
- Іп – lower welding current of pulses.