Steel And Stainless Synergic Gmaw-P (Pulsed Mig) Welding - Lincoln Electric DLF-82 Operator's Manual

DLF-82 ® OPERATION

STEEL AND STAINLESS SYNERGIC GMAW-P (PULSED MIG) WELDING

Synergic GMAW-P (Pulsed MIG) welding is ideal for low spatter, out of position and reduced heat input applications. During pulse
welding, the welding current continuously switches from a low level to a high level and then back again. Each pulse sends a small
droplet of molten metal from the wire to the weld puddle.
Pulse welding controls the arc length with Trim instead of voltage. When trim (arc length) is adjusted, the Power Wave automatically
recalculates the voltage, current and time of each part of the pulse waveform for the best result. Trim adjusts the arc length and ranges
from 0.50 to 1.50. Increasing the trim value increases the arc length, while decreasing the trim value decreases the arc length. The Arc
Control knob or control output equates to - Pinch / Inductance/ Arc Force / Ultimarc / pulse frequency.
FIGURE B.5
For steel and stainless pulse modes, Arc Control regulates the focus or shape of the arc. Arc Control values greater than 0.0
increase the pulse frequency while decreasing the background current, resulting in a tight, stiff arc best for high speed sheet
metal welding. Arc Control values less than 0.0 decrease the pulse frequency while increasing the background current, for a soft arc
good for out-of-position welding.
FIGURE B.6
B-5