PLASMA ARC CUTTING SYSTEM, INCLUDING NOZZLES AND OTHER CONSUMABLES, AND RELATED METHODS OF WORK Russian patent published in 2018 - IPC H05H1/28 

FIELD: technological processes.

SUBSTANCE: invention relates to a nozzle for a liquid-cooled plasma torch. Nozzle includes a heat conducting body having a distal end, a proximal end and a longitudinal axis passing therethrough. Nozzle also includes an outlet for the plasma arc at the distal end of the heat conducting body. In addition, the nozzle includes a cooling belt disposed circumferentially around the outer surface of the heat conducting body. Cooling belt includes an inclined liquid inlet portion, an inclined liquid discharge part and a heat exchange zone located between these inclined portions. Heat exchange zone extends substantially parallel to the longitudinal axis, and the inclined liquid inlet portion and the inclined liquid discharge portion are generally perpendicular to the longitudinal axis.

EFFECT: optimization of the coolant flow through the nozzles, which allows to increase the service life of the nozzles and improve the quality of cutting.

22 cl, 5 dwg