Patent ID: 7168916
Filing Date: 2007-01-30
Classification: B23K,F01D,F05C,F05D

Abstract:
1. A rotor for a thermal machine, the rotor comprising: a plurality of rotor disks arranged one behind the other along a rotor axis and being welded to one another, at least one first rotor disk, which at least one first rotor disk is arranged in a section of the rotor which is subject to particularly high thermal loads, comprising a nickel-base alloy able to withstand high temperatures and the at least one first rotor disk being welded to at least one second adjacent rotor disk, the at least one second rotor disk comprising a steel able to withstand high temperatures; a first rotor ring consisting of a steel able to withstand high temperatures inserted between the at least one first rotor disk and the at least one second rotor disk; an encircling weld seam; and wherein the first rotor ring has one side welded to the at least one second rotor disk and another side joined to the at least one first rotor disk via the encircling weld seam.