Aluminium Synergic Gmaw-P (Pulsed Mig) And Gmaw-Pp Welding - Lincoln Electric POWER FEED 25M Operator's Manual

®
POWER FEED 25M & 25M ALUMINUM
ALUMINUM SYNERGIC GMAW-P (PULSED MIG)AND
GMAW-PP (PULSE ON PULSE) WELDING
The POWER FEED ® 25M and Power Wave welding power source
combine to readily produce top quality aluminum welds with
excellent appearance, little spatter and good bead shape. Push-
pull guns are available for consistent feeding when welding a
long distance away from the wire feeder.
Pulse-on-Pulse Welding
The Power Wave system offers both traditional pulse and Pulse-
on-Pulse ® . Pulse-on-Pulse (GMAW-PP) is an exclusive waveform
for aluminum welding. Use it to make welds with a "stacked
dime" appearance, similar to GTAW welds.
FIGURE B.9
The pulsing frequency is adjustable. Changing the frequency
modulation (or UltimArc) of the waveform changes the ripple
spacing. Faster travel speeds may be achieved by using higher
values of frequency modulation.
FIGURE B.10
Frequency Modulation = -10
Wide weld and ripple spacing, slow travel speed.
FIGURE B.11
Frequency Modulation = 10
Narrow weld and ripple spacing, fast travel speed.
B-13
OPERATION