Which process is referred to as GMAW?

Gas Metal Arc Welding (GMAW) is defined as an arc welding process that utilizes a continuous, consumable bare wire electrode to provide the filler metal needed for the weld. During this process, an electrical arc is generated between the wire electrode and the workpiece, melting both the electrode and the base material to create a strong bond. The molten metal is shielded from atmospheric contamination by a flow of protective gas, usually a mixture of argon and carbon dioxide or other inert gases, which prevents oxidation and improves the quality of the weld.

This method is distinct from other joining processes. For example, the type of stick welding process involves a different electrode technique that uses a coated rod rather than a continuous wire, and soldering is a method involving lower temperatures and different filler materials that do not achieve the same fusion as welding. Non-welding metal joining processes encompass various techniques that do not use heat to bond materials, such as mechanical fastening or adhesives. Thus, the definition of GMAW is specifically aligned with the characteristics described in the first option.