Siemens Energy Global Gmbh & Co. Kg

Markus Lempke

Fathi Ahmad

Radan Radulovic

Kay Krabiell

Daniel Vöhringer

Thorsten Mattheis

Heiko Lammers

Daniela Koch

Björn Anders

Constantin Garske

Ricardo Nilsson

Anne Weidenmüller

Axel Podschwadek

A turbine rotor having an improved rotor tip, which has at least one cooling channel in the rotor blade, the cooling channel, in the region of its cuspidal point, having at least one locally limited constriction that is caused by a thickened portion at the end of a partition of the cooling channel.

Rotor-blade tip including cooling configuration

A method for producing a cavity in a blade platform of a blade, in particular of a turbine blade, as part of a blade-platform cooling system, wherein the method has the steps of: producing a first bore from a first platform lateral face in the direction of an opposite second platform lateral face, with a first opening in the first platform lateral face being created, and expanding the first bore in a fan-like manner by an electrical discharge machining method, in particular using a wire- or bar-form electrode, such that the first opening, created in the first step, of the first bore represents the starting point of the fan-like expansion. A blade is produced in particular with such a method.

Method for producing a cavity in a blade platform; corresponding blade

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Mülheim, Germany

Markus Lempke