Patent ID: 8171632
Filing Date: 2012-05-08
Classification: B23P,F01D,Y02T,Y10T

Abstract:
1. A method for the manufacturing an integrally designed rotor wheel for at least one of a compressor and a turbine, the rotor wheel including a disk with rotor blades formed on the periphery of the disk, the method comprising: providing a rotor wheel formed by a manufacturing process, the formed rotor wheel including a disk and rotor blades, the rotor blades formed on the periphery of the disk, measuring the natural frequency of each individual rotor blade of the formed rotor wheel, determining a blade mass of each individual blade via a dependency existing between the blade natural frequency and the blade mass, determining for each blade a respective mass difference between the mass of the blade and the mass of the blade exhibiting the smallest mass, and removing the respective mass difference from each blade with an etchant, so that all blades exhibit an essentially identical mass and an essentially identical natural frequency.