KR960024336A - On-line yield strength measurement method of steel sheet using bending rolls - Google Patents

On-line yield strength measurement method of steel sheet using bending rolls Download PDF

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Publication number
KR960024336A
KR960024336A KR1019940038951A KR19940038951A KR960024336A KR 960024336 A KR960024336 A KR 960024336A KR 1019940038951 A KR1019940038951 A KR 1019940038951A KR 19940038951 A KR19940038951 A KR 19940038951A KR 960024336 A KR960024336 A KR 960024336A
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South Korea
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steel sheet
measuring
yield strength
load
width
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KR1019940038951A
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Korean (ko)
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KR0158564B1 (en
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이승복
김진철
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김만제
포항종합제철 주식회사
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Priority to KR1019940038951A priority Critical patent/KR0158564B1/en
Publication of KR960024336A publication Critical patent/KR960024336A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0023—Bending

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

본 발명은 열간압연강판 또는 냉간압연강판등의 항복강도를 측정하는 방법에 관한 것으로서, 굽힘롤에 의해 발생하는 모멘트를 측정하여 항복강도를 변환시킴으로써 강판의 전장에 대한 항복강도를 간단하고 보다 정확하게 연속적으로 측정할 수 있는 굽힘롤을 이용한 강판의 온라인 항복강도 측정방법을 제공하고자 하는데, 그 목적이 있다.The present invention relates to a method for measuring the yield strength of a hot rolled steel sheet or a cold rolled steel sheet, by measuring the moment generated by the bending roll to convert the yield strength to a simple and more accurate continuous yield strength of the steel sheet An object of the present invention is to provide an online yield strength measuring method of a steel sheet using a bending roll which can be measured by the above.

본 발명은 굽힘롤과 로드셀을 구비한 하중측정롤을 일정간격을 두고 대향되게 배치하는 단계; 상기와 같이 배치된 두롤 사이로 폭 및 두께를 변화시키면서 강판을 통과시켜 강판의 폭 및 두께에 따른 굽힘모멘트에 대응하는 하중을 연속적으로 측정하는 단계; 상기와 같이 측정된 하중값을 강판의 폭으로 나누어서 두께별 단위폭당 하중을 구하는 단계; 상기 단위 폭당 하중과 상기 강판에 대해 실제측정된 항복강도와의 상관관계식을 강판 두께별로 구하는 단계; 및 실제 강판의 강도측정시 상기와 같이 연속적으로 하중을 측정하여 단위폭당 하중을 구하고, 이 값을 상기 상관관계식에 대입하여 강판의 항복강도를 연속적으로 측정하는 단계를 포함하여 구성되는 굽힘롤을 이용항 강판의 온라인 항복강도 측정방법을 그 요지로 한다.The present invention comprises the steps of placing the load measuring roll having a bending roll and the load cell facing each other at a predetermined interval; Continuously measuring the load corresponding to the bending moment according to the width and thickness of the steel sheet by passing the steel sheet while varying the width and thickness between the two rolls arranged as described above; Obtaining a load per unit width for each thickness by dividing the measured load value by the width of the steel sheet; Obtaining a correlation between the load per unit width and the yield strength actually measured for the steel sheet for each steel sheet thickness; And measuring the load per unit width by continuously measuring the load as described above when measuring the strength of the actual steel plate, and substituting this value into the correlation equation to continuously measure the yield strength of the steel plate. On-line yield strength measurement method of a steel sheet is made into the summary.

Description

굽힘롤을 이용한 강판의 온라인 항복 강도 측정방법On-line yield strength measurement method of steel sheet using bending rolls

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 인장시험시의 변형량-유동응력곡선, 제2도는 굽힘시험시의 곡률-굽힘모멘트 곡선, 제3도는 본 발명에 따라 강판의 항복강도를 측정하기 위한 구조의 일례도, 제4도는 항복강도와 로드셀 하중과의 상관성도.1 is a strain-flow stress curve in the tensile test, FIG. 2 is a curvature-bending moment curve in the bending test, FIG. 3 is an example of a structure for measuring the yield strength of a steel sheet according to the present invention, and FIG. Correlation between strength and load cell load.

Claims (1)

굽힘롤(1)과 로드셀(2a)을 구비한 하중측정롤(2)을 일정간격을 두고 대향되게 배치하는 단계; 상기와 같이 배치된 두롤 사이로 폭 및 두께를 변화시키면서 강판을 통과시켜 강판의 폭 및 두께에 따른 굽힘모멘트에 대응하는 하중을 연속적으로 측정하는 단계; 상기와 같이 측정된 하중값을 강판의 폭으로 나누어서 두께별 단위폭당 하중을 구하는 단계; 상기 단위 폭당 하중과 상기 강판에 대해 실제측정된 항복강도와의 상관 관계식을 강판두께별로 구하는 단계; 및 실제 강판의 강도측정시 상기와 같이 연속적으로 하중을 측정하여 단위폭당 하중을 구하고, 이 값을 상기 상관관계식에 대입하여 강판의 항복강도를 연속적으로 측정하는 단계를 포함하여 구성되는 굽힘롤을 이용한 강판의 온라인 항복강도 측정방법.Arranging the load measuring rolls 2 including the bending rolls 1 and the load cells 2a to face each other at a predetermined interval; Continuously measuring the load corresponding to the bending moment according to the width and thickness of the steel sheet by passing the steel sheet while varying the width and thickness between the two rolls arranged as described above; Obtaining a load per unit width for each thickness by dividing the measured load value by the width of the steel sheet; Obtaining a correlation between the load per unit width and the yield strength actually measured for the steel sheet for each steel sheet thickness; And measuring the load per unit width by continuously measuring the load as described above when measuring the strength of the actual steel sheet, and substituting this value into the correlation equation to continuously measure the yield strength of the steel sheet. On-line yield strength measurement method of steel sheet. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940038951A 1994-12-29 1994-12-29 Method of measuring on-line yield strength of steel sheet using bending roll KR0158564B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940038951A KR0158564B1 (en) 1994-12-29 1994-12-29 Method of measuring on-line yield strength of steel sheet using bending roll

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940038951A KR0158564B1 (en) 1994-12-29 1994-12-29 Method of measuring on-line yield strength of steel sheet using bending roll

Publications (2)

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KR960024336A true KR960024336A (en) 1996-07-20
KR0158564B1 KR0158564B1 (en) 1999-03-30

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