METHOD OF SURFACE HARDENING OF STEEL PRODUCTS Russian patent published in 2012 - IPC C21D7/06 B24C1/10 

FIELD: machine building.

SUBSTANCE: method of surface hardening of steel products, includes the processing of the product through shock action of corundum particles onto the surface using a gas-dynamic equipment to disperse the particles and their ejection from the nozzle. Acceleration of the particles is performed by a supersonic jet of air, and the products are processed at a speed of the nozzle movement (9-11)^-2 m / sec, the distance from the nozzle to the surface of the product (9-11)^-2 m and the air temperature at the nozzle exit 300-400°C.

EFFECT: use of the method makes it possible to reduce the product processing period in 2-4 times in comparison with the known method without reducing the degree of work hardening and thereby to increase the productivity of the process.

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