Title:
TURBINE ROTOR AND METHOD FOR MANUFACTURING TURBINE ROTOR
Document Type and Number:
Japanese Patent JP2010090805
Kind Code:
A
Abstract:
To provide a turbine rotor having appropriate strength and toughness and a method for manufacturing the turbine rotor without causing a sudden rise in manufacturing cost and the extension of manufacturing time.
In the turbine rotor composed by welding high temperature rotor material made of high chrome steel and low temperature rotor material made of low chrome steel, the high temperature rotor material is made of the high chrome steel containing nitrogen of 0.02 mass% or more, and filler material welding the high temperature rotor material and the low temperature rotor material is 9% chrome filler material containing nitrogen of 0.025 mass% or less.
Inventors:
SHIGE TAKASHI
NISHIMOTO SHIN
MARUYAMA KANEMITSU
KAWASAKI KENJI
FUKUNAGA YOSHIAKI
NAKANO TAKASHI
NISHIMOTO SHIN
MARUYAMA KANEMITSU
KAWASAKI KENJI
FUKUNAGA YOSHIAKI
NAKANO TAKASHI
Application Number:
JP2008261660A
Publication Date:
April 22, 2010
Filing Date:
October 08, 2008
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F01D5/02; B23K31/00; B23K35/30; C21D9/00; C22C38/00; C22C38/58; F01D25/00; B23K9/00; B23K9/23; B23K103/04; B23K103/18
Attorney, Agent or Firm:
Patent business corporation Takahashi Matsumoto & Partners