JPS57171243A - Internal hardness gauge - Google Patents

Internal hardness gauge

Info

Publication number
JPS57171243A
JPS57171243A JP5682181A JP5682181A JPS57171243A JP S57171243 A JPS57171243 A JP S57171243A JP 5682181 A JP5682181 A JP 5682181A JP 5682181 A JP5682181 A JP 5682181A JP S57171243 A JPS57171243 A JP S57171243A
Authority
JP
Japan
Prior art keywords
hole
pressure element
cylinder
center
displacement
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.)
Granted
Application number
JP5682181A
Other languages
Japanese (ja)
Other versions
JPS6344186B2 (en
Inventor
Hiroaki 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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5682181A priority Critical patent/JPS57171243A/en
Publication of JPS57171243A publication Critical patent/JPS57171243A/en
Publication of JPS6344186B2 publication Critical patent/JPS6344186B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/40—Investigating hardness or rebound hardness
    • G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

PURPOSE:To achieve efficient monitoring of deterioration in material by enabling measuring of the hardness in a center hole during the manufacture and the operation of a turbine rotor or the like from the displacement of a pressure element pressed against the inner surface of the center hole as determined once drawn externally. CONSTITUTION:The body 2 of a hardness gauge is made a cylinder with an outer diameter slightly smaller than the inner diameter of a hole 1a to be measured of the center of a turbine rotor. A cylinder hole 3 is provided in one direction diameterwise and a stator 4 is inserted into the hole 3 in such a manner as to be extended outward hydraulically. A cylinder hole 5 is arranged on the opposite side of the hole 3 and a pressure element 6 having a 1/16 inch steel ball at the tip thereof is inserted therethrough in such a manner as to be protruded from a piping 5a. The displacement of the pressure element 6 when pressed against the inner surface of the center hole 1a is provided to a measuring device by way of a working rod 8 and a working transformer 9 to measure.
JP5682181A 1981-04-15 1981-04-15 Internal hardness gauge Granted JPS57171243A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5682181A JPS57171243A (en) 1981-04-15 1981-04-15 Internal hardness gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5682181A JPS57171243A (en) 1981-04-15 1981-04-15 Internal hardness gauge

Publications (2)

Publication Number Publication Date
JPS57171243A true JPS57171243A (en) 1982-10-21
JPS6344186B2 JPS6344186B2 (en) 1988-09-02

Family

ID=13038030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5682181A Granted JPS57171243A (en) 1981-04-15 1981-04-15 Internal hardness gauge

Country Status (1)

Country Link
JP (1) JPS57171243A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63134934A (en) * 1986-11-27 1988-06-07 Kansai Electric Power Co Inc:The Method and device for diagnosing deterioration
US6067846A (en) * 1997-10-27 2000-05-30 Hill; Jack O. Apparatus and method for testing the hardness of a pipe
KR101206745B1 (en) 2010-11-29 2012-11-30 국방과학연구소 Apparatus and method of measuring underwater static pressure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0217697U (en) * 1988-07-20 1990-02-05

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5264987A (en) * 1975-11-25 1977-05-28 Nippon Steel Corp Apparatus for and method of detecting unevenness heat treatment in hea t treated steel pipe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5264987A (en) * 1975-11-25 1977-05-28 Nippon Steel Corp Apparatus for and method of detecting unevenness heat treatment in hea t treated steel pipe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63134934A (en) * 1986-11-27 1988-06-07 Kansai Electric Power Co Inc:The Method and device for diagnosing deterioration
US6067846A (en) * 1997-10-27 2000-05-30 Hill; Jack O. Apparatus and method for testing the hardness of a pipe
KR101206745B1 (en) 2010-11-29 2012-11-30 국방과학연구소 Apparatus and method of measuring underwater static pressure

Also Published As

Publication number Publication date
JPS6344186B2 (en) 1988-09-02

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