*1.2.1 Classification of WAAM*

The WAAM is a hot developing topic yet and is not classified so far clearly. But in this text, an attempt has been given for the classification of WAAM processes based on the familiar arc welding processes alone employed for stainless steels and proved to be fit for WAAM. Therefore, WAAM is here classified into,


Selection of the welding process is based on the operator's requirement. For example, if the priority is given to a high deposition rate, GMAW process may be selected compared to GTAW even if the quality and process stability are comparatively less. If the operator is looking for an electric arc with very high energy density then PAW may be preferred that actually enables increased travel speeds and good quality weld deposits with minimum weld distortion [8].
