Welding torch with non-consumable electrode and double shielding gas flow and the relevant welding process

摘要

In order to improve electric arc penetration of an arc welding torch, the angles of convergence alpha and beta of a sleeve and a nozzle of the torch are selected within an area which is inscribed in a quadrangular figure defined by the coordinates ( alpha , beta ) with corners, or apices, at the four following points: alpha = 17.5 degrees S'1: beta = 27.5 degrees alpha = 7.2 degrees S'2: beta = 20 degrees alpha = 7.5 degrees S'3: beta = 15 degrees alpha = 17.5 degrees S'4: beta = 7.5 degrees The disclosed arc welding torch is favorably employed in an inert gas welding process.