METHOD FOR PROCESSING METAL PARTS UNDER CONDITIONS OF ACOUSTIC RESONANT ACTION OF FLOW OF COMPRESSIBLE AIR AND GASEOUS CHEMICAL REAGENTS AND DEVICE FOR IMPLEMENTATION THEREOF Russian patent published in 2018 - IPC C23C8/00 C21D1/74 F27B5/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy. Chemical-thermal treatment of parts is carried out under conditions of acoustic resonant action by a compressed air flow by heating to a temperature of 150 to 450°C and cooling parts in a gas mixture consisting of air and gaseous chemical reagents, parts are heated and cooled in a resonator chamber at a pressure of 1.5-4.5 atm and action on the parts by a circulating flow of compressed air at a resonant frequency in the range of 500-5000 Hz, and concentration of gas components with respect to the air in the chamber is: for hydrogen: from 2 to 2.5%, for methane: from 10 to 25%, for nitrogen: from 15 to 25%, for ammonia: from 15 to 45%. Treatment is carried out in the device, comprising a sealed cylindrical chamber, having a lifting cover, centrifugal air supercharger with engine, located at the center of the chamber, axial resonator chambers with slotted nozzles located inside the chamber, each of which has a heater, slotted nozzle flap with its turn actuator for adjusting the width of the air flow passage from said supercharger, air ducts for circulating the airflow from resonant chambers to the supercharger, acoustic vibration and temperature sensors, control unit with a timer, input of which receives signals from the said sensors from each chamber, and to its outputs the engine of the air supercharger, flap actuators, pressure sensor, electric valves for supply and discharge of pressure in the cylindrical chamber and lifting and rotating device for the lifting cap, gas chamber, having a pipeline with fittings and solenoid valves for supplying air and gaseous chemical reagents into it, as well as sensors, determining concentration of gaseous chemical reagents, are connected, wherein in the zone of the air supercharger of the sealed chamber there is an electromagnetic valve for supplying the gas mixture from the gas chamber, and the gas chamber sensor is connected to said control unit.

EFFECT: working properties of cutting tools and parts is improved.

5 cl, 4 dwg, 3 tbl