OBTAINING METHOD OF GAS-TURBINE ENGINE WHEEL Russian patent published in 2014 - IPC B22F7/02 B22F3/15 

FIELD: metallurgy.

SUBSTANCE: method of obtaining a gas-turbine engine wheel involves filling of a separated by cylindrical insertion wheel capsule consisting of rim and hub parts, granules of two heatproof nickel alloys with functional gradient properties or granules of different fractions of one heatproof nickel alloy with functional gradient properties, removal of cylindrical insertion, hot isostatic pressing and subsequent heat treatment. Concentricity of the wheel parts is provided by installation of a retaining ring, a separating insertion has a form of a thin-wall cylinder shell with wall thickness not exceeding 1 mm and with a thick-wall bottom with holes for the granules filling, and before removal of the cylindrical insertion compaction by vibration is performed.

EFFECT: increasing the gas-turbine engine efficiency and weight due to high accuracy of separation border location and provision of functional gradient properties along the section of the wheel workpiece.

1 dwg, 1 tbl