JPS5757255A - Judging method of material characteristics of thick steel plate lising on-line system - Google Patents

Judging method of material characteristics of thick steel plate lising on-line system

Info

Publication number
JPS5757255A
JPS5757255A JP55132280A JP13228080A JPS5757255A JP S5757255 A JPS5757255 A JP S5757255A JP 55132280 A JP55132280 A JP 55132280A JP 13228080 A JP13228080 A JP 13228080A JP S5757255 A JPS5757255 A JP S5757255A
Authority
JP
Japan
Prior art keywords
steel plate
measured
elastic wave
line system
material characteristics
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
JP55132280A
Other languages
Japanese (ja)
Inventor
Takeshi Kitagawa
Hideo Maruyama
Isao Takada
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP55132280A priority Critical patent/JPS5757255A/en
Publication of JPS5757255A publication Critical patent/JPS5757255A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
    • G01N29/341—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with time characteristics
    • G01N29/343—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with time characteristics pulse waves, e.g. particular sequence of pulses, bursts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/0289—Internal structure, e.g. defects, grain size, texture

Abstract

PURPOSE:To evaluate average aggregation texture and average crystal grain size quickly and nondestructively by an on-line system, by transmitting a pulse shaped elastic wave in the direction of a plate thickness from the surface and receiving a back echo reflected from the bottom. CONSTITUTION:A transmitting end 1 and a receiving end 2 are incorporated into a unitary body, and water is supplied into a junction between said body and a steel plate 3 as an acoustic medium from a water nozzle 4. By using such a transmitter T and a receiver R, the pulse shaped elastic wave is transmitted in the direction of the thickness of the steel plate 3 from the transmitting end 1. The back echo from the bottom surface is received by the receiving end 2. The transmission speed and the elastic constant in the steel plate are measured from the transmission time. From these data, the average aggregation organization and the material characteristics based on said aggregation organization in the direction of the plate thickness is measured. Then the energy of the received elastic wave is measured. From the ratio between said value and the energy of the transmitted elastic wave, the average crystal grain size in the direction of the plate thickness of the object to be measured is obtained.
JP55132280A 1980-09-25 1980-09-25 Judging method of material characteristics of thick steel plate lising on-line system Pending JPS5757255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55132280A JPS5757255A (en) 1980-09-25 1980-09-25 Judging method of material characteristics of thick steel plate lising on-line system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55132280A JPS5757255A (en) 1980-09-25 1980-09-25 Judging method of material characteristics of thick steel plate lising on-line system

Publications (1)

Publication Number Publication Date
JPS5757255A true JPS5757255A (en) 1982-04-06

Family

ID=15077583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55132280A Pending JPS5757255A (en) 1980-09-25 1980-09-25 Judging method of material characteristics of thick steel plate lising on-line system

Country Status (1)

Country Link
JP (1) JPS5757255A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006040823A1 (en) * 2004-10-14 2006-04-20 Toshiba Mitsubishi-Electric Industrial Systems Corporation Method of controlling material quality on rolling, forging or straightening line, and apparatus therefor
JP2007086029A (en) * 2005-09-26 2007-04-05 Toshiba Mitsubishi-Electric Industrial System Corp Material measuring instrument of metal processing material

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53126992A (en) * 1977-04-12 1978-11-06 Nippon Steel Corp Discriminating method of casting structure by ultrasonic waves

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53126992A (en) * 1977-04-12 1978-11-06 Nippon Steel Corp Discriminating method of casting structure by ultrasonic waves

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006040823A1 (en) * 2004-10-14 2006-04-20 Toshiba Mitsubishi-Electric Industrial Systems Corporation Method of controlling material quality on rolling, forging or straightening line, and apparatus therefor
JPWO2006040823A1 (en) * 2004-10-14 2008-05-15 東芝三菱電機産業システム株式会社 Material control method and apparatus for rolling, forging or straightening line
US7617709B2 (en) 2004-10-14 2009-11-17 Toshiba Mitsubishi-Electric Industrial Systems Corporation Apparatus for controlling materials quality in rolling, forging, or leveling process
JP4752764B2 (en) * 2004-10-14 2011-08-17 東芝三菱電機産業システム株式会社 Material control method and apparatus for rolling, forging or straightening line
JP2007086029A (en) * 2005-09-26 2007-04-05 Toshiba Mitsubishi-Electric Industrial System Corp Material measuring instrument of metal processing material
JP4685572B2 (en) * 2005-09-26 2011-05-18 東芝三菱電機産業システム株式会社 Material measuring device for metal workpieces

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