What welding process is used in orbital welding equipment?
Orbital welding equipment primarily uses the GTAW (TIG) process because of the repeatability that it affords. Within the orbital GTAW process there is autogenous fusion, cold wire, and hot wire. Autogenous fusion welding is the rotation of the tig arc around the work piece simply fusing the base material. Cold wire orbital systems have a wire-feeding system that mechanically add filler metal as the arc travels. Hot wire involves rotating the arc around the workpiece while mechanically adding almost molten filler metal.
