The gouging process is characterised by the large amount of gas which is generated to eject the molten metal. … Compared with alternative gouging processes, metal removal rates are low and the quality of the gouged surface is inferior. When correctly applied, MMA gouging can produce relatively clean gouged surfaces.

How is gouging done?

The process of air carbon-arc gouging is generated between the tip of a carbon electrode and the workpiece. The metal becomes molten and a high velocity air streams down the electrode to blow it away and thus leaves a clean groove.

How does arc gouging work?

Air carbon arc gouging is a process of removing metal by means of heat generated from a carbon arc. The process uses a carbon/graphite electrode, compressed air and a standard power source. The intense electric arc used between the tip of a carbon electrode and a metal work piece cuts and melts the work piece.