Life-extended electrode used in liquid-cooled plasma arc cutting torches

A life-extended electrode used in liquid-cooled plasma arc cutting torches with cooling surface increase by scraping from top to bottom on the inner surfaces washed by coolant, by pressing on the bottom, and by creating indentations and protrusions that extend in parallel and/or at the same angle, the electrode comprising cooling channels obtained with surface increase in the forms of indentations/protrusions opened at equal intervals and the same angle extension on the inner surface of a downstream tip carrying the emitter cutter tip, i.e. on the cylindrical outer surface of an internal one-eyed blind hole;

• on the outer surface of the upstream cylindrical tip at the level of the internal one-eyed blind hole, i.e., on the outer diameter surface of the upstream cylindrical tip at the level of the internal one-eyed blind hole;
• and on the base surface of the internal one-eyed blind hole base surface, in parallel with the coolant flow direction, by scraping from top to bottom in parallel, with the same number and the same angles on the side surfaces, and opened by pressing on the bottom portion at equal intervals and with the same angle extension on the entire surface on the body forming the plasma electrode of the electrode with the liquid cooling system in the plasma torch to cut the metallic piece.