JPS57306A - Rotor for steam turbine - Google Patents

Rotor for steam turbine

Info

Publication number
JPS57306A
JPS57306A JP7320780A JP7320780A JPS57306A JP S57306 A JPS57306 A JP S57306A JP 7320780 A JP7320780 A JP 7320780A JP 7320780 A JP7320780 A JP 7320780A JP S57306 A JPS57306 A JP S57306A
Authority
JP
Japan
Prior art keywords
wheel
shaft
key
rotor
steam turbine
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
JP7320780A
Other languages
Japanese (ja)
Inventor
Kenichi Usami
Seishin Kirihara
Ryoichi Kaneko
Ryoichi Sasaki
Masao Shiga
Takatoshi Yoshioka
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
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7320780A priority Critical patent/JPS57306A/en
Publication of JPS57306A publication Critical patent/JPS57306A/en
Pending legal-status Critical Current

Links

Landscapes

  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE: To prevent stress corrosion cracking in a rotor including a wheel secured on a shaft by a key, by embedding a material, whose corrosion potential is lower than that of the wheel, in at least one of the shaft, the wheel and the key so that a part of the material is exposed.
CONSTITUTION: A wheel 4 is fitted on a rotor shaft 3. A key 2 is inserted into keyways 1, 1' provided in the shaft 3 and the wheel 4, thereby securing the wheel 4 on the shaft 3. Grooves 6, 6' are previously made in the portions of the key 2 which correspond to the shaft 3 and the wheel 4. An anticorrosive material 7, 7', whose corrosion potential is lower than that of at least the wheel 4, is embedded in the grooves 6, 6'. zince, aluminum, magnesium or the like is used as the anticorrosive material 7, 7' when the wheel 4 is made of Ni-Cr-Mo-V steel. Corrosion is thus prevented on the surface of the keyway 1' of the wheel 4 of a steam turbine rotor.
COPYRIGHT: (C)1982,JPO&Japio
JP7320780A 1980-05-30 1980-05-30 Rotor for steam turbine Pending JPS57306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7320780A JPS57306A (en) 1980-05-30 1980-05-30 Rotor for steam turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7320780A JPS57306A (en) 1980-05-30 1980-05-30 Rotor for steam turbine

Publications (1)

Publication Number Publication Date
JPS57306A true JPS57306A (en) 1982-01-05

Family

ID=13511466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7320780A Pending JPS57306A (en) 1980-05-30 1980-05-30 Rotor for steam turbine

Country Status (1)

Country Link
JP (1) JPS57306A (en)

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