Seimens Aktiengesellschaft

Doncasters Precision Castings-Bochum Gmbh

Jörn Grossmann

Robert Singer

Winfried Esser

Andreas Volek

Jürgen Preuhs

Ralf Bürgel

Florian Pyczak

Alfred Scholz

Wilfried Schneiders

Wolfgang Hermann

Theodor Schmitte

Hael Mughrabi

A high-temperature component made of a nickel super-alloy has the following composition in wt %: 11&#x2013;13% of Cr, 3&#x2013;5% of W, 0.5&#x2013;2.5% of Mo, 3&#x2013;5% of Al, 3&#x2013;5% of Ti, 3&#x2013;7% of Ta, 1&#x2013;5% of Re and a remainder formed of nickel. A corresponding component which is also provided is formed of an alloy having a composition essentially similar to that mentioned above, but with the rhenium proportion replaced with 0.1&#x2013;5 wt % of ruthenium.

High-temperature-resistant component and process for producing the high-temperature-resistant component

To prevent movement of a ceramic core in a ceramic shell for the investment casting of a turbine blade, the free end of the core has one or more pins embedded therein so that the pins project into both the core and the ceramic shell which is applied over a wax layer. After removal of the wax and firing of the shell, molten metal is cast in the space left by the wax between the core and the shell. After hardening of the metal, the outwardly projecting part of the pins are removed during the machining of the surfaces of the turbine blade blank.

Method of making turbine blades having cooling channels

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Hattingen, Germany

Jörn Grossmann