JPS563623A - On-line measuring method of austenite contained in rolled steel sheet - Google Patents

On-line measuring method of austenite contained in rolled steel sheet

Info

Publication number
JPS563623A
JPS563623A JP7725179A JP7725179A JPS563623A JP S563623 A JPS563623 A JP S563623A JP 7725179 A JP7725179 A JP 7725179A JP 7725179 A JP7725179 A JP 7725179A JP S563623 A JPS563623 A JP S563623A
Authority
JP
Japan
Prior art keywords
steel sheet
ray
austenite
phase
ferrite
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
Application number
JP7725179A
Other languages
Japanese (ja)
Other versions
JPS6259256B2 (en
Inventor
Takeshi Kitagawa
Takeshi Saito
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.)
MUSASHINO DENSHI KK
JFE Steel Corp
Original Assignee
MUSASHINO DENSHI KK
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 MUSASHINO DENSHI KK, Kawasaki Steel Corp filed Critical MUSASHINO DENSHI KK
Priority to JP7725179A priority Critical patent/JPS563623A/en
Publication of JPS563623A publication Critical patent/JPS563623A/en
Publication of JPS6259256B2 publication Critical patent/JPS6259256B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product

Landscapes

  • Analysing Materials By The Use Of Radiation (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

PURPOSE: To perform the on-line measurement of the quantity of austenite contained in a steel sheet having a mixed structure composed of two phases, ferrite and austenite, by irradiating the steel sheet with characteristic X-ray, and by detecting the diffraction X-ray with a position-sensitive X-ray detector.
CONSTITUTION: A high tensile steel sheet composed of mixed structure of ferrite and austenite phases is heated to a temp range Ac1WAc3 and is cooled rapidly to produce steel sheet for the exterior of automobiles, which is composed of ferrite and martensite phases and is excellent in press-formability and in spot-weldability. To regulate the quantity of martensite phase at a suitable degree, the quantity of the austenite phase prior to the rapid cooling is measured and adjusted. For that purpose, the steel sheet 7 on-line is irradiated with parallel beam of characteristics X- ray from an X-ray tube 1-2. The diffraction X-ray from the ferrite phase and the austenite phase are detected by a position-sensitive X-ray detector 1-3, and, after waveform analysis, the total sum of the diffraction X-ray for each phase is determined. The quantity of the austenite phase in the steel sheet is measured continuously while comparing the ratio with the correcting curve.
COPYRIGHT: (C)1981,JPO&Japio
JP7725179A 1979-06-19 1979-06-19 On-line measuring method of austenite contained in rolled steel sheet Granted JPS563623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7725179A JPS563623A (en) 1979-06-19 1979-06-19 On-line measuring method of austenite contained in rolled steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7725179A JPS563623A (en) 1979-06-19 1979-06-19 On-line measuring method of austenite contained in rolled steel sheet

Publications (2)

Publication Number Publication Date
JPS563623A true JPS563623A (en) 1981-01-14
JPS6259256B2 JPS6259256B2 (en) 1987-12-10

Family

ID=13628630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7725179A Granted JPS563623A (en) 1979-06-19 1979-06-19 On-line measuring method of austenite contained in rolled steel sheet

Country Status (1)

Country Link
JP (1) JPS563623A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329270U (en) * 1976-08-20 1978-03-13
JPS61175554A (en) * 1985-01-25 1986-08-07 ウエスチングハウス　エレクトリック　コ−ポレ−ション Nondestructive inspection method of metallic pipe using x-ray diffraction
JPH01270650A (en) * 1988-04-22 1989-10-27 Rigaku Corp Observing apparatus of pole figure of x-ray diffraction of thin-film sample
EP0430222A2 (en) * 1989-11-30 1991-06-05 Nisshin Steel Co., Ltd. Method for estimating the press formability of galvannealed steel sheets by X-ray diffration
EP2862640A1 (en) * 2013-10-18 2015-04-22 Siemens Aktiengesellschaft Method and device for processing rolled goods in a rolling line
CN112730488A (en) * 2021-02-04 2021-04-30 洛阳Lyc轴承有限公司 Calibration method for measuring residual austenite of steel grade by X-ray diffraction method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329270U (en) * 1976-08-20 1978-03-13
JPS61175554A (en) * 1985-01-25 1986-08-07 ウエスチングハウス　エレクトリック　コ−ポレ−ション Nondestructive inspection method of metallic pipe using x-ray diffraction
JPH01270650A (en) * 1988-04-22 1989-10-27 Rigaku Corp Observing apparatus of pole figure of x-ray diffraction of thin-film sample
JP2620106B2 (en) * 1988-04-22 1997-06-11 理学電機 株式会社 X-ray diffraction pole figure observation device for thin film samples
EP0430222A2 (en) * 1989-11-30 1991-06-05 Nisshin Steel Co., Ltd. Method for estimating the press formability of galvannealed steel sheets by X-ray diffration
EP2862640A1 (en) * 2013-10-18 2015-04-22 Siemens Aktiengesellschaft Method and device for processing rolled goods in a rolling line
CN104561518A (en) * 2013-10-18 2015-04-29 西门子公司 Method and device for processing rolled goods in rolling mill
EP2862640B1 (en) 2013-10-18 2016-11-30 Primetals Technologies Germany GmbH Method and device for processing rolled goods in a rolling line
CN112730488A (en) * 2021-02-04 2021-04-30 洛阳Lyc轴承有限公司 Calibration method for measuring residual austenite of steel grade by X-ray diffraction method
CN112730488B (en) * 2021-02-04 2023-09-22 洛阳Lyc轴承有限公司 Calibration method for measuring residual austenite in steel by X-ray diffraction method

Also Published As

Publication number Publication date
JPS6259256B2 (en) 1987-12-10

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