JPS55125432A - Method and device for measuring rockwell hardness - Google Patents

Method and device for measuring rockwell hardness

Info

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
Application number
JP3310579A
Other languages
Japanese (ja)
Inventor
Hideo Takato
Tsugio Ishida
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP3310579A priority Critical patent/JPS55125432A/en
Publication of JPS55125432A publication Critical patent/JPS55125432A/en
Pending legal-status Critical Current

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  • 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
JP3310579A 1979-03-20 1979-03-20 Method and device for measuring rockwell hardness Pending JPS55125432A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5060283A (en) * 1973-09-26 1975-05-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5060283A (en) * 1973-09-26 1975-05-24

Cited By (5)

* Cited by examiner, † Cited by third party
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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