METHOD OF HYDROABRASIVE CUTTING OF MATERIALS Russian patent published in 2020 - IPC B24C5/02 B24C1/00 

FIELD: technological processes.

SUBSTANCE: invention relates to jet hydroabrasive processing. Processed material is fed into cutting zone with provision of jet head nozzle supply to processed material surface at distance of 5–10 mm. High-speed liquid flow with particles of abrasive with diameter of 200–600 mcm is mixed in jet head till formation of hydroabrasive liquid of homogeneous consistence. A jet of hydroabrasive fluid 0.8–1.0 mm in diameter is fed from the jet head nozzle to the cutting zone at jet discharge rate of jet head nozzle making 700–1,000 m/s. This jet blasts the processed material with force of 60–80 N. Jet head is moved along a predetermined trajectory at rate of 1–1,000 mm/min to ensure cutting of the processed material and roughness of the processed material surface in the cutting zone R_a within 2.0–5.0 mcm.

EFFECT: result is higher efficiency and stable high quality of cutting throughout length of cut at reduced consumption of expensive abrasive material.

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