IN2013DE00552A - - Google Patents

Info

Publication number
IN2013DE00552A
IN2013DE00552A IN552DE2013A IN2013DE00552A IN 2013DE00552 A IN2013DE00552 A IN 2013DE00552A IN 552DE2013 A IN552DE2013 A IN 552DE2013A IN 2013DE00552 A IN2013DE00552 A IN 2013DE00552A
Authority
IN
India
Prior art keywords
inclusive
less
steam turbine
turbine rotor
low
Prior art date
Application number
Inventor
Masahiko Arai
Hiroyuki Doi
Shinji Oikawa
Kenichi Murata
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of IN2013DE00552A publication Critical patent/IN2013DE00552A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines

Abstract

STEAM TURBINE ROTOR There is provided a steam turbine rotor with high reliability and corresponding to increase in length of a high strength steel blade, in which only a low-pressure last stage is highly strengthened. The steam turbine rotor includes a steam turbine low-pressure last stage long blade made of a precipitation hardening type martensitic stainless steel containing, in mass, 0.1% or less of C, 0.1% or less of N, 9.0% to 14.0% inclusive of Cr, 9.0% to 14.0% inclusive of Ni, 0.5% to 2.5% inclusive of Mo, 0.5% or less of Si, 1.0% or less of Mn, 0.25% to 1.75% inclusive of Ti, 0.25% to 1.75% inclusive of Al, and the balance consisting of Fe and inevitable impurities, and a disk having a specific alloy composition is joined to a last stage section of the turbine rotor made of a low-alloy steel. Fig. 3
IN552DE2013 2012-02-27 2013-02-26 IN2013DE00552A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012039523 2012-02-27
JP2013005880A JP6317542B2 (en) 2012-02-27 2013-01-17 Steam turbine rotor

Publications (1)

Publication Number Publication Date
IN2013DE00552A true IN2013DE00552A (en) 2015-06-26

Family

ID=47750523

Family Applications (1)

Application Number Title Priority Date Filing Date
IN552DE2013 IN2013DE00552A (en) 2012-02-27 2013-02-26

Country Status (5)

Country Link
US (1) US9200524B2 (en)
EP (1) EP2631432B1 (en)
JP (1) JP6317542B2 (en)
CN (1) CN103290333B (en)
IN (1) IN2013DE00552A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6113456B2 (en) * 2012-10-17 2017-04-12 三菱日立パワーシステムズ株式会社 Precipitation hardened martensitic stainless steel and steam turbine long blades using it
JP6317566B2 (en) * 2013-11-08 2018-04-25 三菱日立パワーシステムズ株式会社 Precipitation hardening type martensitic stainless steel, turbine member using the stainless steel, and turbine using the turbine member
JP6189737B2 (en) * 2013-12-18 2017-08-30 三菱日立パワーシステムズ株式会社 Steam turbine low pressure rotor and method for manufacturing the same
DE102015219351A1 (en) * 2015-10-07 2017-04-13 Siemens Aktiengesellschaft Process for producing products of steel or titanium with a precipitation hardening nickel base alloy and component
SE540110C2 (en) * 2016-06-01 2018-04-03 Ovako Sweden Ab High strength steel, method of manufacturing a part made of steel and use of the steel
CN108034798B (en) * 2017-11-29 2019-06-04 无锡透平叶片有限公司 A kind of heat treatment method reducing 2Cr12Ni4Mo3VNbN turbine blade yield tensile ratio
DE102017131218A1 (en) 2017-12-22 2019-06-27 Voestalpine Böhler Edelstahl Gmbh & Co Kg A method of making an article from a maraging steel
DE102017131219A1 (en) 2017-12-22 2019-06-27 Voestalpine Böhler Edelstahl Gmbh & Co Kg A method of making an article from a maraging steel
WO2020054540A1 (en) * 2018-09-13 2020-03-19 大同特殊鋼株式会社 Precipitation hardening-type martensite-based stainless steel and underground excavation drill component
JP7298382B2 (en) * 2018-09-13 2023-06-27 大同特殊鋼株式会社 Precipitation Hardening Martensitic Stainless Steel and Drill Parts for Underground Drilling
JP7131225B2 (en) * 2018-09-13 2022-09-06 大同特殊鋼株式会社 Precipitation Hardening Martensitic Stainless Steel
WO2024013542A1 (en) * 2022-07-12 2024-01-18 Arcelormittal Hot rolled steel and a method of manufacturing thereof

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DE3789776T2 (en) * 1986-02-05 1994-08-18 Hitachi Ltd Heat-resistant steel and gas turbine parts made from it.
JPS62180040A (en) * 1986-02-05 1987-08-07 Hitachi Ltd Compressor blade for gas turbine
JPS63171856A (en) * 1987-01-09 1988-07-15 Hitachi Ltd Heat-resisting steel and gas turbine using same
EP0881360B1 (en) * 1996-02-16 2004-08-11 Hitachi, Ltd. Steam turbine power generating plant
JP3898785B2 (en) * 1996-09-24 2007-03-28 株式会社日立製作所 High and low pressure integrated steam turbine blades, high and low pressure integrated steam turbine, combined power generation system, and combined power plant
US5820817A (en) * 1997-07-28 1998-10-13 General Electric Company Steel alloy
US5906791A (en) * 1997-07-28 1999-05-25 General Electric Company Steel alloys
JPH11350076A (en) * 1998-06-03 1999-12-21 Mitsubishi Heavy Ind Ltd Precipitation strengthening type ferritic heat resistant steel
JP3793667B2 (en) * 1999-07-09 2006-07-05 株式会社日立製作所 Method for manufacturing low-pressure steam turbine final stage rotor blade
JP3716684B2 (en) * 1999-09-27 2005-11-16 株式会社日立製作所 High strength martensitic steel
JP2006170006A (en) 2004-12-14 2006-06-29 Toshiba Corp Steam turbine power generation system and low pressure turbine rotor
FR2887558B1 (en) * 2005-06-28 2007-08-17 Aubert & Duval Soc Par Actions MARTENSITIC STAINLESS STEEL COMPOSITION, PROCESS FOR MANUFACTURING A MECHANICAL PART THEREFROM, AND PIECE THUS OBTAINED
JP4702267B2 (en) * 2006-11-20 2011-06-15 株式会社日立製作所 Precipitation hardening type martensitic stainless steel
EP2432905B1 (en) * 2009-05-22 2016-04-13 Siemens Aktiengesellschaft Ferritic martensitic iron-based alloy, a component and a process
JP4918632B2 (en) * 2010-06-28 2012-04-18 社団法人日本航空宇宙工業会 Precipitation strengthened stainless steel and method for producing the same
JP5528986B2 (en) * 2010-11-09 2014-06-25 株式会社日立製作所 Precipitation hardening type martensitic stainless steel and steam turbine member using the same
JP5409708B2 (en) * 2011-06-16 2014-02-05 株式会社日立製作所 Precipitation hardening type martensitic stainless steel and steam turbine long blades using the same

Also Published As

Publication number Publication date
EP2631432B1 (en) 2016-07-06
US9200524B2 (en) 2015-12-01
JP6317542B2 (en) 2018-04-25
EP2631432A1 (en) 2013-08-28
CN103290333A (en) 2013-09-11
JP2013209742A (en) 2013-10-10
CN103290333B (en) 2016-08-31
US20130224033A1 (en) 2013-08-29

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