JPS57188656A - Rotor shaft for steam turbine - Google Patents

Rotor shaft for steam turbine

Info

Publication number
JPS57188656A
JPS57188656A JP7083481A JP7083481A JPS57188656A JP S57188656 A JPS57188656 A JP S57188656A JP 7083481 A JP7083481 A JP 7083481A JP 7083481 A JP7083481 A JP 7083481A JP S57188656 A JPS57188656 A JP S57188656A
Authority
JP
Japan
Prior art keywords
equiv
steam turbine
rotor shaft
contg
equation
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP7083481A
Other languages
Japanese (ja)
Inventor
Katsumi Iijima
Masayuki Sukegawa
Seishin Kirihara
Norio Yamada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=13442990&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS57188656(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7083481A priority Critical patent/JPS57188656A/en
Priority to DE8282302419T priority patent/DE3274468D1/en
Priority to EP19820302419 priority patent/EP0067526B1/en
Publication of JPS57188656A publication Critical patent/JPS57188656A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron

Abstract

PURPOSE: To enhance the thermal fatigue resistance of a rotor shaft for a steam turbine at high temp. by manufacturing the shaft with a forged high Ni-Cr alloy having specified Ni equiv. and Cr equiv. and contg. γ' phase precipitated in the austenite matrix.
CONSTITUTION: A rotor shaft for a steam turbine is manufactured with a forged alloy contg. γ' phase precipitated in the austenite matrix and having a composition contg. 0.01W0.15% C, <2% si, <3% Mn, 20W30% Ni, 10W20% Cr, 0.5W3% Mo, 1W3% Ti and 0.0001W0.03% B while satisfying 23W29 Ni equiv. calculated by an equation Ni%+30×C%+0.5×Mn% and 12W(Ni equiv.×7/10+9) Cr equiv. calculated by an equation Cr%+Mo%+1.5xSi%. A rotor with superior thermal fatigue resistance to steam even at 600W650°C high temp. is obtd.
COPYRIGHT: (C)1982,JPO&Japio
JP7083481A 1981-05-13 1981-05-13 Rotor shaft for steam turbine Pending JPS57188656A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP7083481A JPS57188656A (en) 1981-05-13 1981-05-13 Rotor shaft for steam turbine
DE8282302419T DE3274468D1 (en) 1981-05-13 1982-05-12 Superhigh temperature and pressure steam turbine
EP19820302419 EP0067526B1 (en) 1981-05-13 1982-05-12 Superhigh temperature and pressure steam turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7083481A JPS57188656A (en) 1981-05-13 1981-05-13 Rotor shaft for steam turbine

Publications (1)

Publication Number Publication Date
JPS57188656A true JPS57188656A (en) 1982-11-19

Family

ID=13442990

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7083481A Pending JPS57188656A (en) 1981-05-13 1981-05-13 Rotor shaft for steam turbine

Country Status (3)

Country Link
EP (1) EP0067526B1 (en)
JP (1) JPS57188656A (en)
DE (1) DE3274468D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110095451A1 (en) * 2006-03-30 2011-04-28 Z F Group North American Operations, Inc. Method of making a multilayered duplex material article

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3424314B2 (en) * 1994-02-24 2003-07-07 大同特殊鋼株式会社 Heat resistant steel
JP4509664B2 (en) 2003-07-30 2010-07-21 株式会社東芝 Steam turbine power generation equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1087022A (en) * 1953-09-08 1955-02-18 Armco Int Corp Manufacturing process of alloys and resulting products
US3065067A (en) * 1959-01-21 1962-11-20 Allegheny Ludlum Steel Austenitic alloy
GB965585A (en) * 1961-01-23 1964-07-29 Carpenter Steel Co Age-hardenable austenitic chromium-nickel-titanium steel
GB999439A (en) * 1962-05-10 1965-07-28 Allegheny Ludlum Steel Improvements in or relating to an austenitic alloy
FR2225536B1 (en) * 1973-04-12 1976-04-09 Creusot Loire
US4129462A (en) * 1977-04-07 1978-12-12 The United States Of America As Represented By The United States Department Of Energy Gamma prime hardened nickel-iron based superalloy

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110095451A1 (en) * 2006-03-30 2011-04-28 Z F Group North American Operations, Inc. Method of making a multilayered duplex material article
US8435435B2 (en) * 2006-03-30 2013-05-07 Zf Friedrichshafen Ag Method of making a multilayered duplex material article

Also Published As

Publication number Publication date
DE3274468D1 (en) 1987-01-15
EP0067526A1 (en) 1982-12-22
EP0067526B1 (en) 1986-11-26

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