OPERATION |
GTAW (TIG) WELDING
The welding current can be set through a PF10M or PF25M wire feeder.
The TIG mode features continuous control from 5 to 350 amps with the use of an optional foot amptrol (K870). The POWER WAVE® R350 can be run in either a Touch Start TIG mode or Scratch start TIG mode.
CONSTANT VOLTAGE WELDING
Synergic CV
For each wire feed speed, a corresponding voltage is preprogrammed into the machine through special soft- ware at the factory.
The nominal preprogrammed voltage is the best aver- age voltage for a given wire feed speed, but may be adjusted to preference. When the wire feed speed changes, the Power Wave automatically adjusts the voltage level correspondingly to maintain similar arc characteristics throughout the WFS range.
Non Synergic CV
In
All CV Modes
Pinch adjusts the apparent inductance of the wave shape. The “pinch” function is inversely proportional to inductance. Therefore, increasing Pinch Control greater than 0.0 results in a crisper arc (more spatter) while decreasing the Pinch Control to less than 0.0 provides a softer arc (less spatter).
PULSE WELDING
Pulse welding procedures are set by controlling an overall “arc length” variable. When pulse welding, the arc voltage is highly dependent upon the waveform. The peak current, back ground current, rise time, fall time and pulse frequency all affect the voltage. The exact voltage for a given wire feed speed can only be predicted when all the pulsing waveform parameters are known. Using a preset voltage becomes impracti- cal and instead the arc length is set by adjusting “trim”.
Trim adjusts the arc length and ranges from 0.50 to
1.50with a nominal value of 1.00. Trim values greater than 1.00 increase the arc length, while values less than 1.00 decrease the arc length. (See figure B.3)
FIGURE B.3
Trim .50 | Trim 1.00 | Trim 1.50 |
Arc Length Short | Arc Length Medium | Arc Length Long |
POWER WAVE® R350