JPS57171243A - Internal hardness gauge - Google Patents
Internal hardness gaugeInfo
- 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
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.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0217697U (en) * | 1988-07-20 | 1990-02-05 |
Citations (1)
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 |
-
1981
- 1981-04-15 JP JP5682181A patent/JPS57171243A/en active Granted
Patent Citations (1)
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)
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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