The POWER FEED® 25M and Power Wave welding
power source combine to readily produce top quality
aluminum welds with excellent appearance, little spat-
ter 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 FEED® 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" appear-
ance, similar to GTAW welds.

FIGURE B.9

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.10

Frequency Modulation = -10

Wide weld and ripple spacing, slow travel speed.

Frequency Modulation = 10

Narrow weld and ripple spacing, fast travel speed.

FIGURE B.11