METHOD FOR PRODUCING PARTS FROM HEAT-RESISTANT NICKEL ALLOYS, INCLUDING TECHNOLOGY OF SELECTIVE LASER ALLOYS AND HEAT TREATMENT Russian patent published in 2018 - IPC B23K26/144 B23K26/70 B33Y30/00 

FIELD: technological processes.

SUBSTANCE: invention relates to a method of manufacturing parts made of heat-resistant nickel-based alloys, intended for operation at elevated temperatures in gas turbine engines. Part is produced by selective laser fusion with a laser power of 280 to 320 W, a scanning speed of 700 to 760 mm/s, a layer thickness of 50 mcm and a scanning step of 0.12 mm. Process of manufacturing parts using selective laser fusion technology takes place inside a sealed chamber in a protective gas environment. Heat treatment is carried out at a temperature of 1,000±100 °C for 2 hours. Heating of the parts is carried out gradually with an exposure for 2 hours at temperatures of 200 °C, 400 °C, 600 °C, 800 °C. Cooling parts carried out in conjunction with the stove.

EFFECT: obtaining parts with low porosity, high mechanical properties and low residual stresses.

1 cl, 2 dwg, 1 tbl