Compatibility Chart

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GMAW of Aluminum Alloys
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Pulse On Pulse
®
Mode
Pulse On Pulse mode, a patented Lincoln invention, is similar to pulsed spray
welding. In conventional pulsed spray welding, one pulse wave form is repeated ad
infinitum. In contrast, in Pulse On Pulse a number of high energy pulses is
followed by the same number of low energy pulses (see Figure 5-3). These pulsed
waves create a weld ripple when we are in the low energy part of the waveform.
Pulse On Pulse is therefore a way to obtain a very uniform weld bead with the
characteristic “stacked dimes” appearance of a TIG weld. The weld ripple spacing
can be varied by changing the Ultimarc
™
setting.
Suggested Pulse On Pulse welding parameters for various material thicknesses are
shown in Table 6-3.
Figure 5-3: Pulse On Pulse Waveform