EP 1715140 A1 20061025 - Turbine blade with a cover plate and a protective layer on the cover plate
Title (en)
Turbine blade with a cover plate and a protective layer on the cover plate
Title (de)
Turbinenschaufel mit einer Deckplatte und einer auf der Deckplatte aufgebrachte Schutzschicht
Title (fr)
Aube de turbine ayant une bande couvrante et une couche de protection sur la bande couvrante
Publication
Application
Priority
EP 05008811 A 20050421
Abstract (en)
The blade has a cover plate (20) formed at a blade leaf (18). A protective layer (28) is applied on a surface of the cover plate by deposit welding, where the surface is turned away from the blade leaf. The cover plate is made of a nickel based alloy or a cobalt based alloy, and the protective layer is formed by an armor alloy of cobalt base. A hard material layer is provided as the protective layer. The blade leaf and the cover plate are manufactured from a single component work piece. An independent claim is also included for a method for manufacturing a steam turbine with multiple turbine blades.
IPC 8 full level
F01D 11/12 (2006.01); C23C 4/10 (2016.01)
CPC (source: EP US)
F01D 5/225 (2013.01 - EP US); F01D 5/288 (2013.01 - EP US); F01D 11/12 (2013.01 - EP US); F01D 11/122 (2013.01 - EP US); F05C 2201/0463 (2013.01 - EP US); F05D 2230/232 (2013.01 - EP US); F05D 2230/30 (2013.01 - EP US); F05D 2230/312 (2013.01 - EP US); F05D 2230/313 (2013.01 - EP US); F05D 2230/90 (2013.01 - EP US); F05D 2300/226 (2013.01 - EP US); F05D 2300/228 (2013.01 - EP US); F05D 2300/2284 (2013.01 - EP US); Y10T 29/4932 (2015.01 - EP US)
Citation (search report)
- [X] FR 1470032 A 19670217 - GEN ELECTRIC
- [X] US 2003107181 A1 20030612 - WIEGHARDT KAI [DE]
- [X] EP 1312760 A2 20030521 - MITSUBISHI HEAVY IND LTD [JP]
- [X] US 2003183529 A1 20031002 - OHARA MINORU [JP], et al
- [X] US 2002109303 A1 20020815 - FRIED REINHARD [CH]
- [X] EP 1391537 A1 20040225 - MITSUBISHI HEAVY IND LTD [JP]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR LV MK YU
DOCDB simple family (publication)
EP 1715140 A1 20061025; CN 101163862 A 20080416; CN 101163862 B 20111005; EP 1871991 A1 20080102; JP 2008538399 A 20081023; JP 4874329 B2 20120215; US 2009022583 A1 20090122; US 8021120 B2 20110920; WO 2006111427 A1 20061026
DOCDB simple family (application)
EP 05008811 A 20050421; CN 200680013189 A 20060120; EP 06703576 A 20060120; EP 2006050337 W 20060120; JP 2008507029 A 20060120; US 91880906 A 20060120