Overview of modern arc processes and their material transfer in the case of gas-shielded metal-arc welding.

The utilisation of modern, electronically clock-pulse-controlled welding devices with innovative digital process control and regulation techniques permits a heat input adapted to the joining task and optimised metal transfer methods in the GMA arc. "CMT", "coldArc", "Cold Weld", "STT", "SpeedPulse", "PCS", "forceArc", "Rapid Weld", "SpeedArc", "DeepARC" etc. are process names from various device manufacturers and designate modern arc processes and their metal transfer methods in the case of gas-shielded metal-arc (GMA) welding in different power ranges. Due to the large number and diversity of the process names, even the well-versed users have difficulties in finding an overview and, above all, a classification and assignment of the new arc technologies for the previously well-known arc types and metal transfer methods since the modified metal transfer methods have not yet been taken into consideration in standards and technical bulletins at the moment. This article is intended to give an overview in an independent and neutral form and to provide assistance with regard to the assignment of the new process names to the previously well-known arc types such as the short, pulsed and spray arcs. [ABSTRACT FROM AUTHOR]