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2.3 MIG Pulse/ Dual Pulse Display
Single Pulse Function
Pulse allows the arc to enter spray transfer at lower currents and feed speeds than manual allowing
faster welding with high deposition and smaller heat effected zones due to the extra arc energy
provided at peak of pulse. Used for stainless or aluminum edge or seam welds.
Double-Pulse Function
Double pulse allows more precise control of heat input as “peak” is offset by “base” allowing puddle
stability. It is mainly used in aluminum alloy welding for strong penetration with narrow bead and
smooth surface. It can produce the ripple effect of a TIG weld without torch modulation. Dual pulse
reference waveform as shown below:
Wire feed
Currant
Dual Pulse Frequency
Set pulse frequency, as shown in Figure regulating the value of time T, namely, ripplepattern of density
regulation. Higher Hz produces many short ripples with slightly lower penetration.
Dual Pulse Duty
Set strong pulse time T1 (peak) for penetration and low-frequency cycle T2 ratio(cooling), namely the
regulation of the proportion of the ripple pattern on weld puddle surface and resulting depth in groove.
Summary of Contents for Evolution MTS500 DP
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