Pulsed Metal Inert Gas Welding
A MIG welding process achieving spatter-free droplet transfer within the spray arc range through controlled current pulses. It is exceptionally well suited for joining aluminum and stainless steel structures.
In MIG welding with pulsed arc, the wire feed is pulsed so that material transfer occurs drop-wise and almost spatter-free. This gives a clean, calm seam and is especially suitable for aluminum and stainless steel because you introduce less heat into the workpiece and the seam becomes smooth. If you don't coordinate the parameters properly – wire feed, voltage, and pulse frequency – the arc will flicker, spatter, or the seam will become irregular and may crack. So make sure the wire runs evenly and the distance to the workpiece remains constant. Set the gas flow so that the shielding gas reliably covers the melt, and choose the wire matching the base material. For aluminum, use a softer wire; for steel, the harder one. If you set the machine properly and guide it steadily, you will get a proper, tight seam.