- 15 - PATON ProTIG AC/DC TIG/MMA
9. "PULSE BALANCE" – pulse shape balance, 50 %.
10. "PULSE FREQUENCY" – pulse frequency, 150 Hz.
11. "LOW CURRENT" – lower current (pulse mode), 50 A.
12. "BALANCE" – AC balance, 50 %.
13. "FREQUENCY" – AC frequency, 50 Hz.
Please note! To activate the pulse mode, the parameter "LOW CURRENT" must be
switched from the OFF position to any other value, and the indicator "P" (pulse
mode is on) must light up. Also, the parameter "PULSE FREQUENCY" must be at
least twice as big as the parameter "FREQUENCY". If this is not done, the process
will not be of good quality.
Then the welding can start. The welding arc will oscillate in the amplitude of 100 A to
50 A with the frequency of 150 oscillations per 1 second.
These parameters are set differently in each situation according to the welder's
requirements.
TIG DC WELDING CYCLOGRAM
Identification marks:
Тр – purging time before welding.
It is necessary for pre-purging of the welding zone, torch nozzle, and providing
guaranteed protection before arc ignition.
Іс – start current.
After pre-purge, the arc is ignited at the starting current and during the time Tp
it rises up to lzv. It is used mainly for smooth heating of the edge of the piece so that
there is no melting.
Tp – current ramp up time.
Izv – basic welding current.
Тс – decay time.
After welding is complete, the main welding current descends smoothly to Izk for
the time Tc. It is used for crater welding.
Іzk – ending current.
В – pulse polarity balance.
F – pulse frequency.
Ip – lower pulse welding current.
To Next Page
Loading...
