TURBINE MACHINE ROTOR MADE OUT OF DISSIMILAR MATERIALS Russian patent published in 2016 - IPC F01D5/06 

FIELD: machine building.

SUBSTANCE: turbine machine rotor contains the first and second sections of impellers, made out of unweldable with each other materials, creating a non-detachable connection via an intermediate element. The intermediate element has areas with the weldability corresponding to the first and second impellers, and is welded by one end to the first impeller, and by another end to the second impeller. The intermediate element is made out of two flanges, each of them is made out of the material having weldability with the material of the adjacent first or second impellers. The flanges of the intermediate element are connected by a permanent connection.

EFFECT: invention ensures the permanent connection of the rotor elements made out of dissimilar unweldable materials, without reducing the strength of the connection relatively to the strength of the materials used in the rotor sections.

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