Lincoln Electric POWER FEED IM915 - Manual (Page 45)

b-23 OPERATION b-23
POWER FEED™ 10M SINGLE WIRE FEEDER
ALUMINUM SYNERGIC GMAW-P (PULSED
MIG)AND GMAW-PP (PULSE ON PULSE)
WELDING
The Power Feed™ 10M Single Wire Feeder 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.7c
The pulsing frequency is adjustable. Changing the fre-
quency modulation (or arc control) of the waveform
changes the ripple spacing. Faster travel speeds may
be achieved by using higher values of frequency mod-
ulation.
FIGURE B.7d
Frequency Modulation = -10
Wide weld and ripple spacing, slow travel speed.
Frequency Modulation = 10
Narrow weld and ripple spacing, fast travel speed.
FIGURE B.7e