Title:
TURBINE ROTOR BLADE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2017/046851
Kind Code:
A1
Abstract:
Provided is a turbine rotor blade manufacturing method wherein a turbine rotor blade is manufactured using a Ni-based alloy for forging, which has excellent workability and high design flexibility for a cooling structure. This turbine rotor blade manufacturing method is a method for manufacturing a turbine rotor blade using a Ni-based alloy for forging and characterized by comprising: a softening step (S1) of increasing the γ' phase which is incoherent with the γ phase in a matrix of the Ni-based alloy for forging; a first processing step (S21) of forming at least two members, which constitute the rotor blade, using the Ni-based alloy for forging which has been subjected to the softening step; a second processing step (S22) of forming a cooling structure constituent part in each of the members; and a third processing step (S23) of bonding the members.
Inventors:
OTA ATSUO (JP)
IMANO SHINYA (JP)
IMANO SHINYA (JP)
Application Number:
PCT/JP2015/076024
Publication Date:
March 23, 2017
Filing Date:
September 14, 2015
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
C22F1/10; F01D5/28; F01D25/00; C22F1/00
Domestic Patent References:
| WO2015008343A1 | 2015-01-22 | |||
| WO2008072303A1 | 2008-06-19 |
Foreign References:
| JPH11114662A | 1999-04-27 | |||
| JP2010235985A | 2010-10-21 | |||
| US5366344A | 1994-11-22 |
Other References:
See also references of EP 3351651A4
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
Download PDF: