Patent ID: 8535012

Claim:
An arrangement for axially securing rotor blades in a rotor, comprising: a rotor; a plurality of rotor blades; a shaft collar, where a plurality of rotor blade retaining grooves are disposed on an outer periphery of the shaft collar, the plurality of rotor blade retaining grooves extend in an axial direction of the rotor and in which the plurality of rotor blades are arranged in each case with a plurality of blade roots which correspond to the rotor blade retaining groove; a radially outwardly open, encompassing groove which is arranged on an end face of the shaft collar in a region of the plurality of rotor blade retaining grooves; and a plurality of metal-like sealing elements, wherein for axially securing the plurality of rotor blades, the plurality of sheet metal-like sealing elements are seated in the encompassing groove in each case and in a circumferential direction form an end-face sealing ring, wherein for securing the plurality of sealing elements against displacement in the circumferential direction at least one of the sealing elements comprises a metal strip which includes a first geometry representing a preliminary shape, which is then fastened upon a sealing element, the metal strip including a leg which butts against the plurality of rotor blades or against the shaft collar in a form-fitting manner, wherein a material of the metal strip is a shape-memory alloy, and wherein the leg of the metal strip, after thermal treatment has been carried out, butts against the plurality of rotor blades or against the shaft collar under a pretension whereby the metal strip assumes a functional geometry which is at least slightly different from the first geometry using a selected shape of a closure element to block the metal strip from complete redeformation to the first geometry, and in the process presses the sealing element flat against a sidewall of a groove or the annular groove.