Method for manufacturing a blade ring for drum-shaped rotors of turbomachinery
AssigneeMTU Motoren- und Turbinen-Union Muenchen GmbH
InventorsWolfgang Krueger, William Wei
Life of this patent
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Abstract
A method is provided for manufacturing a bladed ring for drum-shaped rotors of turbomachinery, especially rotors for axial compressors of gas turbine engines. The bladed ring is to be manufactured by hot isostatic pressing (HIP) and the fiber rings are formed in a metallic powder material for the bladed ring arranged in a circumferential direction. The fiber rings are bonded with spacing therebetween. The fiber rings are reinforced by fibers embedded in a metal matrix. The bladed ring prefabricated in this fashion by HIP is machined down to its required dimensions.
Claims15
A method for manufacturing a blade ring on a rotor, having a rotor axis, of a turbo-engine, the method comprising the steps of:
- firmly bonding fiber rings into a metallic material of the blade ring for absorbing stresses caused by the rotational speed and the centrifugal force of the turbo-engine, said fiber rings being arranged coaxially with respect to the rotor axis, the fiber rings being present as finished products, in which case fibers of said fiber rings are firmly bonded into a metal matrix to form said fiber rings;
- manufacturing the blade ring of a metal powder as said metallic material using hot isostatic pressing (HIP);
- diffusion bonding a metallic material partner of the metal matrix and of the metal powder for the blade ring during said hot isostatic pressing;
- using a ring capsule, coordinated with a basic shape of the blade ring, for performing the HIP-process;
- arranging the fiber rings in said ring capsule at a mutual distance and surrounded on all sides by the metal powder filled into the ring capsule;
- and
- finishing the blade ring blank produced by the HIP-process to a specified size.
Dependencies are inferred from the claim text.