Plasma Arc Welding
A thermal joining process based on a thermally constricted, ionized gas jet with a higher energy density than TIG welding. It allows for deeper penetration and increased welding speeds.
Plasma welding is a process where an arc is forced through a tightly constricted nozzle. This creates a very hot, focused plasma jet that melts the material quickly and deeply. The arc burns between a tungsten electrode and the workpiece, with shielding gas added from outside. You can make very clean and narrow welds with it, often without filler material. It's well suited for thinner sheets and stainless steel because the heat-affected zone stays small. As with TIG welding, you need to ensure a clean surface and the right gas flow, otherwise the weld becomes porous or burns through.