JPS5524851A - Shot peening material and shot peening for stress corrosion cracking resistance - Google Patents

Shot peening material and shot peening for stress corrosion cracking resistance

Info

Publication number
JPS5524851A
JPS5524851A JP9617778A JP9617778A JPS5524851A JP S5524851 A JPS5524851 A JP S5524851A JP 9617778 A JP9617778 A JP 9617778A JP 9617778 A JP9617778 A JP 9617778A JP S5524851 A JPS5524851 A JP S5524851A
Authority
JP
Japan
Prior art keywords
shot peening
cracking resistance
stress corrosion
corrosion cracking
pins
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
JP9617778A
Other languages
Japanese (ja)
Inventor
Masao Shiga
Takashi Ohara
Toshimi Tan
Yoshiji Kanou
Takeshi Ozawa
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 JP9617778A priority Critical patent/JPS5524851A/en
Publication of JPS5524851A publication Critical patent/JPS5524851A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE: By increasing the delay breaking strength of, for example, jointing pins (dovetail pins) of rotors and running blades of a steam turbine by use of shot peening materials of more than the Vickers hardness of at least 1000, breaking damage is prevented.
CONSTITUTION: The surfaces of dovetail pins 3 inserted into pin holes 6 equipped on a rotor 1 and a blade 2 are shot peened by a shot peening material of more than the Vickers hardness of at least 1000 on the surface. In this method delay breaking strength of the dovetail pins 3 is increased and breaking damage is prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP9617778A 1978-08-09 1978-08-09 Shot peening material and shot peening for stress corrosion cracking resistance Pending JPS5524851A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9617778A JPS5524851A (en) 1978-08-09 1978-08-09 Shot peening material and shot peening for stress corrosion cracking resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9617778A JPS5524851A (en) 1978-08-09 1978-08-09 Shot peening material and shot peening for stress corrosion cracking resistance

Publications (1)

Publication Number Publication Date
JPS5524851A true JPS5524851A (en) 1980-02-22

Family

ID=14158035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9617778A Pending JPS5524851A (en) 1978-08-09 1978-08-09 Shot peening material and shot peening for stress corrosion cracking resistance

Country Status (1)

Country Link
JP (1) JPS5524851A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62200071A (en) * 1986-02-27 1987-09-03 Toyota Motor Corp Manufacture of high-strength gear
JPS6431927A (en) * 1987-07-28 1989-02-02 Mazda Motor Production of heat-treated steel parts
EP0699775A1 (en) * 1994-09-02 1996-03-06 Rockwell International Corporation Process for imparting a localized fine grain microstructure to selected surfaces in aluminium alloys

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4931842A (en) * 1972-07-26 1974-03-22
JPS51106293A (en) * 1975-03-14 1976-09-21 Hitachi Shipbuilding Eng Co Shotsutono funmatsuchokusetsuseizoho

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4931842A (en) * 1972-07-26 1974-03-22
JPS51106293A (en) * 1975-03-14 1976-09-21 Hitachi Shipbuilding Eng Co Shotsutono funmatsuchokusetsuseizoho

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62200071A (en) * 1986-02-27 1987-09-03 Toyota Motor Corp Manufacture of high-strength gear
JPH0564208B2 (en) * 1986-02-27 1993-09-14 Toyota Motor Co Ltd
JPS6431927A (en) * 1987-07-28 1989-02-02 Mazda Motor Production of heat-treated steel parts
JPH07109005B2 (en) * 1987-07-28 1995-11-22 マツダ株式会社 Method for manufacturing heat-treated steel parts
EP0699775A1 (en) * 1994-09-02 1996-03-06 Rockwell International Corporation Process for imparting a localized fine grain microstructure to selected surfaces in aluminium alloys

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