Search International and National Patent Collections

1. (WO2010121939) CASTING APPARATUS FOR PRODUCING A TURBINE ROTOR BLADE OF A GAS TURBINE AND TURBINE ROTOR BLADE

Pub. No.:    WO/2010/121939    International Application No.:    PCT/EP2010/054930
Publication Date: Fri Oct 29 01:59:59 CEST 2010 International Filing Date: Fri Apr 16 01:59:59 CEST 2010
IPC: B22C 9/04
B22C 9/08
B22C 9/10
B22D 23/00
F01D 5/08
F01D 5/18
Applicants: SIEMENS AKTIENGESELLSCHAFT
AHMAD, Fathi
PAUL, Uwe
Inventors: AHMAD, Fathi
PAUL, Uwe
Title: CASTING APPARATUS FOR PRODUCING A TURBINE ROTOR BLADE OF A GAS TURBINE AND TURBINE ROTOR BLADE
Abstract:
The invention relates to a casting apparatus (10) for producing a turbine rotor blade (30) of a gas turbine, and to a turbine rotor blade (30) produced therewith. The casting apparatus comprises at least one hollow ceramic shell mold (12), of which the pouring gate and cores (18) arranged therein are oriented with respect to each other such that a hot casting material flowing into a cavity (14) of the ceramic shell mold (12) does not come in direct contact with the cores (18). Thus, so-called hot spots on cores (18) are avoided, which until now have had negative effects on the solidification of the casting material. Especially in the region of the blade root (32) of the turbine rotor blade (30) to be produced improved solidification of the casting material may thus be obtained, reducing any disturbance in the structure of the solidified casting material. By reducing and/or preventing the disturbances, the development and propagation of cracks in the region of the cooling channel sections on the side of the blade root are avoided, resulting in an increased service life of the turbine rotor blade (30).