FIELD: power industry.;SUBSTANCE: cutter nozzle with, at least channel for supplying oxygen for preheat flame of burner, with at least channel (3) for supplying gas for preheat flame of burner, with channel (4) for supplying cutting oxygen, which has a de Laval nozzle (5) with a tapered and expandable portion (6, 7) and with a cutter head (8) that has a free space (9) into which the channel for supplying oxygen for preheat flame of burner, with at least channel (3) for supplying gas for preheat flame of burner and de Laval nozzle (5) of channel (4) for supplying cutting oxygen, characterized in that de Laval nozzle (5), extending into the free space (9) of cutter head (8), is formed as a nozzle with parallel jets. The free space (9) is formed by a cylindrical space. The cutter nozzle (1) has a nozzle body (16) in which is provided a channel (2) for supplying oxygen for preheat flame of burner, a channel for supplying gas (3) for preheat flame of burner and a channel (4) for supplying cutting oxygen, wherein nozzle head (8) adjoins to nozzle body (16).;EFFECT: invention allows to improve the quality and speed of cutting.;17 cl, 4 dwg
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