It is a very versatile welding technique. It is largely applied in the industry sectors in which we operate, also thanks to the speed with which it makes it possible to weld thicker workpieces as well as metalwork frames and structures. The automatic formation of the welding filling material is at the heart of this technique, given that the electric arc forms between the wire and the workpiece; it becomes, therefore, important to take into account the dilution ratio of the finished joint.