EP 1247602 B1 20080220 - Method for producing an airfoil
Title (en)
Method for producing an airfoil
Title (de)
Verfahren zur Herstellung einer Turbinenschaufel
Title (fr)
Procédé pour la fabrication d'une aube de turbine
Publication
Application
Priority
EP 01108480 A 20010404
Abstract (en)
[origin: EP1247602A1] Process for producing a turbine blade in a hollow profile comprises connecting a first core element (10) via a number of approximately cylindrical spacers (14) to a further core element and/or a casting mold. The hollow spaces left by the core elements in the casting mold are filled with blade material. The openings produced in the blade by the spacers are sealed by stopper elements after removal of the core elements and the spacers. Preferred Features: The stopper elements are flattened and mushroomed over after insertion and welded in the opening. The stopper elements are blind rivets or drive-in pins.
IPC 8 full level
B22C 21/14 (2006.01); F01D 5/18 (2006.01); F01D 9/02 (2006.01); F02C 7/00 (2006.01)
CPC (source: EP US)
B22C 21/14 (2013.01 - EP US); Y10T 29/49339 (2015.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 1247602 A1 20021009; EP 1247602 B1 20080220; CN 1250361 C 20060412; CN 1378890 A 20021113; DE 50113629 D1 20080403; ES 2301504 T3 20080701; JP 2002349285 A 20021204; US 2002157251 A1 20021031; US 6739381 B2 20040525
DOCDB simple family (application)
EP 01108480 A 20010404; CN 02105435 A 20020404; DE 50113629 T 20010404; ES 01108480 T 20010404; JP 2002098225 A 20020401; US 11763302 A 20020404