Spot Welding Process - Praxair MICROTIG DC 252 PULSE Manual De Instrucciones

- Adjust TIG cycle welding parameters.
1 Welding current or, in pulsed mode, peak current
2 Up slope time in seconds from IStart to welding current (Ip)
3 IStart - Initial welding current in amps
4 Pre-gas time in seconds - interval between gas flow and arc ignition. Allows starting welding within inert gas
atmosphere.
5 Base current indicator (on pulsed mode).
6 Down slope time from welding current to final current for crater filler
7 IFinal - Final current for crater filler.
8 Post-gas time - interval after arc extinction to maintain gas protection at the end of welding. Prevents welding
pool and tungsten electrode oxidation.
9 Width of the peak current from 10% to 90%
10 Pulse frequency – adjust the pulse frequency in Hertz
11 DYNAMICS - arc length compensation. Useful for unexperienced welders.*
* DYNAMICS – Turn ON or OFF by turning left (OFF) or right (ON) the parameters adjustment turning button at the end
of the TIG cycle parameters. Not available in PULSE mode.
- Start welding.
7.3 - SPOT WELDING MODE
- Follow the previous steps regarding TIG welding and when select key button 2T/4T/SPOT, select SPOT.
- Adjust the tack welding time (tSPOT) from 0,1 to 20 seconds.
- Start spot welding by pressing torch trigger and continuing pressing until the end of the adjusted TIG welding
cycle.
MICROTIG DC 252/322/402 PULSE
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