FIELD: technological processes.
SUBSTANCE: invention relates to waterjet cutting. Proposed device comprises hydro-abrasive nozzle to feed working fluid under pressure and nozzle cooling element to allow use of coolant. Nozzle cooling element is made in the form of coiled hollow tube installed on hydro-abrasive nozzle so that coiled hollow tube envelopes hydro-abrasive nozzle from outside, adjoining tightly. Pitch of hollow tube turns decreases in direction of hydro-abrasive nozzle outlet.
EFFECT: higher accuracy of hydro-abrasive cutting and reduced wear of nozzle.
5 cl, 3 dwg
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