JPS55125432A - Method and device for measuring rockwell hardness - Google Patents
Method and device for measuring rockwell hardnessInfo
- Publication number
- JPS55125432A JPS55125432A JP3310579A JP3310579A JPS55125432A JP S55125432 A JPS55125432 A JP S55125432A JP 3310579 A JP3310579 A JP 3310579A JP 3310579 A JP3310579 A JP 3310579A JP S55125432 A JPS55125432 A JP S55125432A
- Authority
- JP
- Japan
- Prior art keywords
- load
- rockwell hardness
- sample
- pressing member
- computing
- 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
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
PURPOSE: To make it possible to meet various scales of Rockwell hardness and to easily measure the Rockwell hardness by enabling to continuously apply a load to be applied continuously to a pressing member for pressing a sample from zero to a test load.
CONSTITUTION: A program consisting of a reference load W1 to each scale of Rockwell hardness, a test load W2, and a coefficient of the computing formula of Rockwell hardness is memorized in a computing mechanism 20. W1, W2 and the coefficient of the computing formula are set by the switch 21 of the computing mechanism 20, and a holding time T in W2 by a switch 22 and the push-in speed by a potentiometer 23. When a start button 24 is depressed, an air cylinder 11 is actuated to press a sample 1 to an anvil 2 under a pressure P. The quantity of displacement of the pressing member 4 upon this occasion becomes possible to be indicated. A servo motor 15 is normally rotated, and the pressing member 4 is pushed in the sample 1 through a load cell 17. The variations of the displacement quantities X upon this occasion of the load W and the pressing member 4 are supplied to the computing mechanism 20, and computed. When the load W reaches the value of W2, the servo motor 15 comes to a stop and is held, and after holding in a predetermined period of time, the motor 15 reversed. By the above described computation, the Rockwell hardness of the sample can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3310579A JPS55125432A (en) | 1979-03-20 | 1979-03-20 | Method and device for measuring rockwell hardness |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3310579A JPS55125432A (en) | 1979-03-20 | 1979-03-20 | Method and device for measuring rockwell hardness |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55125432A true JPS55125432A (en) | 1980-09-27 |
Family
ID=12377374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3310579A Pending JPS55125432A (en) | 1979-03-20 | 1979-03-20 | Method and device for measuring rockwell hardness |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55125432A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02208539A (en) * | 1989-02-09 | 1990-08-20 | Shimadzu Corp | Indentation hardness test |
JPH0496046U (en) * | 1991-01-18 | 1992-08-20 | ||
EP0607466A1 (en) * | 1992-12-18 | 1994-07-27 | José Maria Las Navas Garcia | Automatic system to measure hardness or microhardness using a load cell and image analysis |
JPH0720548U (en) * | 1994-08-12 | 1995-04-11 | 松沢精機株式会社 | Material testing machine |
JP2008268022A (en) * | 2007-04-20 | 2008-11-06 | National Institute For Materials Science | Method for testing hardness |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5060283A (en) * | 1973-09-26 | 1975-05-24 |
-
1979
- 1979-03-20 JP JP3310579A patent/JPS55125432A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5060283A (en) * | 1973-09-26 | 1975-05-24 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02208539A (en) * | 1989-02-09 | 1990-08-20 | Shimadzu Corp | Indentation hardness test |
JPH0496046U (en) * | 1991-01-18 | 1992-08-20 | ||
EP0607466A1 (en) * | 1992-12-18 | 1994-07-27 | José Maria Las Navas Garcia | Automatic system to measure hardness or microhardness using a load cell and image analysis |
JPH0720548U (en) * | 1994-08-12 | 1995-04-11 | 松沢精機株式会社 | Material testing machine |
JP2008268022A (en) * | 2007-04-20 | 2008-11-06 | National Institute For Materials Science | Method for testing hardness |
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