Apparatus and method for joining a rotor blade to a rotor mount of a gas turbine rotor
AssigneeMTU Aero Engines AG
InventorKarl-Hermann Richter
Life of this patent
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Abstract
The invention relates to a rotor blade for gas turbine rotors for manufacturing gas turbine rotors having integral blading. The rotor blade has a blade pan and a blade footing connected to the blade pan. According to this invention, for manufacturing a gas turbine rotor having integral blading, the blade footing is adapted by capacitor discharge welding such that the blade footing is designed with a V-shaped cross section in at least some portions.
Claims21
1-15. (canceled)
A rotor blade for manufacturing gas turbine rotors having integral blading by capacitor discharge welding, comprising a blade pan and a blade footing connected to the blade pan, wherein the blade footing includes a V-shaped cross section and wherein the V-shaped cross section contacts a rotor in a capacitor discharge welding process.
A method for manufacturing gas turbine rotors having integral blading, wherein a plurality of rotor blades comprised of a blade pan and a footing of the blade connected thereto are mounted on a rotor mount, in particular on a disk or a ring, by capacitor discharge welding, wherein the footing of the blade includes a V-shaped cross section serving to provide contact between the rotor mount and the footing in the capacitor discharge welding, and wherein thickened areas and/or protruding material and/or welding notches are machined off to a final contour of the gas turbine rotors having integral blading.
A gas turbine rotor, comprising:
- a rotor blade having a blade pan and a blade footing, wherein the blade footing includes a V-shaped portion;
- and
- a rotor mount defining a recess therein;
- wherein the V-shaped portion of the blade footing is disposed within the recess of the rotor mount.
A method for joining a rotor blade to a rotor mount of a gas turbine rotor, comprising the steps of:
- disposing a V-shaped portion of a blade footing of a rotor blade in a recess defined by a rotor mount;
- and
- welding the V-shaped portion to the rotor mount by capacitor discharge welding.
Dependencies are inferred from the claim text.