FLAT NOZZLE OF BURNER FOR ARGON-ARC WELDING Russian patent published in 2014 - IPC B23K9/16 

FIELD: metallurgy.

SUBSTANCE: flat nozzle includes a rectangular and all-metal nozzle tube with a wide front edge and with narrow lateral edges, on which longitudinal water-cooled channels are located. Supply and discharge holes of longitudinal water-cooled channels together with their supply and discharge connection pipes are located on the front wide edge of the nozzle tube. Cover plates are made in the form of solid rectangular plates and arranged on lateral edges of the nozzle.

EFFECT: arrangement of water supply and discharge holes with their corresponding supply and discharge connection pipes on front wide plane of the nozzle tube allows increasing cross section of water-cooled channels without increasing the cross section of the nozzle tube, which considerably reduces hydrodynamic head losses of the cooling system.

3 dwg, 1 tbl