JPS56148602A - Production of steam turbine rotor key way - Google Patents

Production of steam turbine rotor key way

Info

Publication number
JPS56148602A
JPS56148602A JP5163380A JP5163380A JPS56148602A JP S56148602 A JPS56148602 A JP S56148602A JP 5163380 A JP5163380 A JP 5163380A JP 5163380 A JP5163380 A JP 5163380A JP S56148602 A JPS56148602 A JP S56148602A
Authority
JP
Japan
Prior art keywords
key way
steam turbine
wheel
rotor
key
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
JP5163380A
Other languages
Japanese (ja)
Inventor
Kenichi Usami
Seishin Kirihara
Masao Shiga
Ryoichi Sasaki
Toshimi Tan
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 JP5163380A priority Critical patent/JPS56148602A/en
Publication of JPS56148602A publication Critical patent/JPS56148602A/en
Pending legal-status Critical Current

Links

Landscapes

  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE: To prevent cracking at a key way portion of a steam turbine rotor by peening the surface of the rotor key way to provide same with a compressive stress and then grinding the rotor key way surface to surface roughness lower than 5μm and a large compressive force.
CONSTITUTION: A wheel pin 5 is inserted in key ways 4 of a rotor shaft 1 and a wheel 2. The surface of each key way is subject to peening treatment to provide the same with a compression stress. Subsequently, it is ground to surface roughness lower than 5μm with sand paper or emery paper to provide the same with a compressive residual stress rather than a shearing force. By such a production method, the key ways involved in connecting the rotor shaft and the wheel of a steam turbine which are used in corrosive environment can be prevented from being cracked, thereby extending the life of the rotor shaft and the wheel.
COPYRIGHT: (C)1981,JPO&Japio
JP5163380A 1980-04-21 1980-04-21 Production of steam turbine rotor key way Pending JPS56148602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5163380A JPS56148602A (en) 1980-04-21 1980-04-21 Production of steam turbine rotor key way

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5163380A JPS56148602A (en) 1980-04-21 1980-04-21 Production of steam turbine rotor key way

Publications (1)

Publication Number Publication Date
JPS56148602A true JPS56148602A (en) 1981-11-18

Family

ID=12892240

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5163380A Pending JPS56148602A (en) 1980-04-21 1980-04-21 Production of steam turbine rotor key way

Country Status (1)

Country Link
JP (1) JPS56148602A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7473160B1 (en) * 2006-08-09 2009-01-06 S.E. Huffman Corp Method and apparatus for grinding a workpiece

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52153007A (en) * 1976-06-14 1977-12-19 Mitsubishi Heavy Ind Ltd Manufactuaring of turbine blade

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52153007A (en) * 1976-06-14 1977-12-19 Mitsubishi Heavy Ind Ltd Manufactuaring of turbine blade

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7473160B1 (en) * 2006-08-09 2009-01-06 S.E. Huffman Corp Method and apparatus for grinding a workpiece
US7699685B1 (en) 2006-08-09 2010-04-20 Huffman Corporation Method and apparatus for grinding a workpiece

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