Patent · US Active

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

US11224926B2 · kind B2 · utility

0Cited by

6References

9Claims

0Family size

Assignee

Siemens Energy Global GmbH & Co. KG · DE

Inventors

Fathi Ahmad · Kaarst, DE
Daniela Koch · Berlin, DE
Markus Lempke · Mülheim, DE
Thorsten Mattheis · Bad Hersfeld, DE
Axel Podschwadek · Gladbeck, DE
Radan Radulovic · Bochum, DE
Anne Weidenmüller · Düsseldorf, DE

Key dates

Filing date	Jan 10, 2018
Grant date	Jan 18, 2022
Priority date	—
Expiry date	May 17, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05D2240/81
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.