JPS5594137A - Hardness indicator for rockwell hardness tester - Google Patents
Hardness indicator for rockwell hardness testerInfo
- Publication number
- JPS5594137A JPS5594137A JP170779A JP170779A JPS5594137A JP S5594137 A JPS5594137 A JP S5594137A JP 170779 A JP170779 A JP 170779A JP 170779 A JP170779 A JP 170779A JP S5594137 A JPS5594137 A JP S5594137A
- Authority
- JP
- Japan
- Prior art keywords
- hardness
- dial gauge
- gauge
- indenter
- 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.)
- Pending
Links
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
PURPOSE: To obtain a hardness value inexpensively using a general dial gauge by magnifying the displacement of an indenter to the size of 6W8 times and measuring it with the dial gauge having predetermined scale.
CONSTITUTION: A magnifying lever 14 for magnifying the displacement of an indenter 8 to the size of 6W8 times is arranged at a Rockwell hardness tester for measuring the hardness by applying pressure to the indenter 8 by a weight 25 for a testing load. Then, the spindle 31 of a dial gauge 30 is brought into contact with the free end 14b of the lever 14. This dial gauge 30 may be a gauge which can be obtained in the market and rotates its needle by one revolution upon displacement of 1mm. The scale portion 45 of the gauge 30 is so calibrated that the scale range of 0W100 in hardness is set at 60W80% of the entire circumference of the scale portion 45 as shown. Thus, the hardness value can be readily visually read inexpensively without using special tool.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP170779A JPS5594137A (en) | 1979-01-10 | 1979-01-10 | Hardness indicator for rockwell hardness tester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP170779A JPS5594137A (en) | 1979-01-10 | 1979-01-10 | Hardness indicator for rockwell hardness tester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5594137A true JPS5594137A (en) | 1980-07-17 |
Family
ID=11509014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP170779A Pending JPS5594137A (en) | 1979-01-10 | 1979-01-10 | Hardness indicator for rockwell hardness tester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5594137A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991012513A1 (en) * | 1990-02-06 | 1991-08-22 | The University Of Maryland | Thermal expansion driven indentation stress-strain system |
-
1979
- 1979-01-10 JP JP170779A patent/JPS5594137A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991012513A1 (en) * | 1990-02-06 | 1991-08-22 | The University Of Maryland | Thermal expansion driven indentation stress-strain system |
US5133210A (en) * | 1990-02-06 | 1992-07-28 | The University Of Maryland | Thermal expansion driven indentation stress-strain system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Taira et al. | A method of X-ray microbeam measurement of local stress and its application to fatigue crack growth problems | |
JPS55101001A (en) | Length measuring instrument | |
GB1329849A (en) | Gauge means for observing buttress-to-buttress twist in a turbine vane | |
JPS5594137A (en) | Hardness indicator for rockwell hardness tester | |
JPS5679901A (en) | Length measuring instrument | |
JPS54130156A (en) | Automatic measuring machine of screw elements | |
JPS5465054A (en) | Groove width measuring device | |
US2561759A (en) | Pipe thread gauge | |
US2448645A (en) | Hardness tester | |
JPS55113902A (en) | Device for measuring inside diameter of deep hole | |
GB938171A (en) | Improvements in measuring instruments | |
GB1479131A (en) | Instrument for measuring external cones | |
US2643460A (en) | Hardness testing indicator | |
JPS5666702A (en) | Measuring device of extent of eccentricity for fine hole drilled at center of end face of cylindrical work | |
JPS6344186B2 (en) | ||
JPS5548601A (en) | Semi-automatic tester for dial gauge | |
JPS53147301A (en) | Measuring device in proving-ground test of automobile | |
JPS5692401A (en) | Method and tool for measurement of dimension | |
Gillespie | Effects of measurement technique and experimental design in the analysis of burrs | |
SU1264071A1 (en) | Device for measuring crack-resistance of materials | |
SU110888A1 (en) | Device for setting up the cutter when setting up automatic lathes | |
JPS5543418A (en) | Hardness measuring method | |
GB1078429A (en) | Measuring device for cylinders | |
JPS52141655A (en) | Low-pressure simple position detecting probe | |
Kálna | More exact method of calculating critical crack opening displacement |