GB2396579A - Method and apparatus for detecting roll eccentricity utilizing pulse generator in rolling mill - Google Patents

Method and apparatus for detecting roll eccentricity utilizing pulse generator in rolling mill Download PDF

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Publication number
GB2396579A
GB2396579A GB0410036A GB0410036A GB2396579A GB 2396579 A GB2396579 A GB 2396579A GB 0410036 A GB0410036 A GB 0410036A GB 0410036 A GB0410036 A GB 0410036A GB 2396579 A GB2396579 A GB 2396579A
Authority
GB
United Kingdom
Prior art keywords
signal
rolling mill
detecting
pulse generator
rolling load
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.)
Withdrawn
Application number
GB0410036A
Other versions
GB0410036D0 (en
Inventor
Jong-Hag Jeon
Il-Seop Choi
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.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
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 Posco Co Ltd filed Critical Posco Co Ltd
Publication of GB0410036D0 publication Critical patent/GB0410036D0/en
Publication of GB2396579A publication Critical patent/GB2396579A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/66—Roll eccentricity compensation systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • 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

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Metal Rolling (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

The present invention relates to a method and an apparatus for detecting a roll eccentricity element of a rolling mill, which is occurred by the difference between a rotation center and a geometric center of a roll. The present method for detecting a roll eccentricity of a rolling mill comprises the steps of: inputting data with respect to a rolling load from the rolling mill, a pulse generating signal from a pulse generator, input and output signals of the steel plate, respectively; determining whether input signal of the steel plate and marker pulse signal of the pulse generator are being inputted; storing the rolling load of the rolling mill corresponding to respective sample pulse signals of the pulse generator in a buffer; calculating alterations of the rolling load by subtracting average rolling load from the rolling load being stored in the buffer; detecting eccentric fundamental wave and radio frequency elements by performing non-linear curve fittings to alteration signal of the rolling load; and determining whether output signal of the steel plate is being inputted and when the output signal is being inputted, detecting procedure is terminated and when the output signal not being inputted, it is returned to the step of storing and the subsequent procedure is repeatedly performed. The present invention is capable of accurately detecting roll eccentricity elements to eccentric fundamental wave and radio frequency elements, using a pulse signal of the pulse generator and a rolling load signal of a load cell. Also, such detection of the roll eccentricity can be performed in reliability and durability, even in severe working conditions of the rolling mill.

Description

GB 2396579 A continuation (72) Inventor(s): Jong-Hag Jean Il-Seop Choi
(74) Agent and/or Address for Service: Abel & Imray 20 Red Lion Street, LONDON, WC1R 4PQ United Kingdom
GB0410036A 2001-11-28 2002-04-26 Method and apparatus for detecting roll eccentricity utilizing pulse generator in rolling mill Withdrawn GB2396579A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
KR20010074600 2001-11-28
KR20010074614 2001-11-28
KR20010074613 2001-11-28
KR20010083811 2001-12-24
PCT/KR2002/000779 WO2003045600A1 (en) 2001-11-28 2002-04-26 Method and apparatus for detecting roll eccentricity utilizing pulse generator in rolling mill

Publications (2)

Publication Number Publication Date
GB0410036D0 GB0410036D0 (en) 2004-06-09
GB2396579A true GB2396579A (en) 2004-06-30

Family

ID=27483537

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0410036A Withdrawn GB2396579A (en) 2001-11-28 2002-04-26 Method and apparatus for detecting roll eccentricity utilizing pulse generator in rolling mill

Country Status (6)

Country Link
US (1) US20050155402A1 (en)
JP (1) JP4017599B2 (en)
KR (1) KR100848628B1 (en)
AU (1) AU2002306098A1 (en)
GB (1) GB2396579A (en)
WO (1) WO2003045600A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002306098A1 (en) * 2001-11-28 2003-06-10 Posco Co., Ltd. Method and apparatus for detecting roll eccentricity utilizing pulse generator in rolling mill
JP4298587B2 (en) * 2004-05-28 2009-07-22 キヤノン株式会社 Displaying eccentricity measurement results
US7552491B2 (en) 2005-11-10 2009-06-30 Voelker Ag Lying surface for a bed, in particular a healthcare and/or hospital bed

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61262415A (en) * 1985-05-17 1986-11-20 Kawasaki Steel Corp Method and device for controlling roll eccentricity of rolling mill
US4691547A (en) * 1983-09-08 1987-09-08 John Lysaght (Australia) Limited Rolling mill strip thickness controller
US4763273A (en) * 1986-07-25 1988-08-09 Kabushiki Kaisha Toshiba Apparatus for detecting eccentricity of roll in rolling mill

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4222254A (en) * 1979-03-12 1980-09-16 Aluminum Company Of America Gauge control using estimate of roll eccentricity
JPS60141321A (en) * 1983-12-28 1985-07-26 Toshiba Corp Detecting equipment of roll eccentricity in rolling mill
US4656854A (en) * 1985-09-06 1987-04-14 Aluminum Company Of America Rolling mill eccentricity compensation using measurement of sheet tension
JPS62207511A (en) * 1986-03-07 1987-09-11 Sumitomo Metal Ind Ltd Control device for roll eccentricity of rolling mill
JPS62254915A (en) * 1986-04-30 1987-11-06 Toshiba Corp Control device for eliminating roll eccentricity of multiple roll mill
CA1284681C (en) * 1986-07-09 1991-06-04 Alcan International Limited Methods and apparatus for the detection and correction of roll eccentricity in rolling mills
EP0684090B1 (en) * 1994-03-29 1998-02-04 Siemens Aktiengesellschaft Method of suppressing the influence of roll eccentricity on the adjustment of the thickness of rolling stock in a roll stand
FR2735046B1 (en) * 1995-06-08 1997-07-11 Lorraine Laminage COLD ROLLING PROCESS WITH OVAL COMPENSATION OF THE ROLLING CYLINDERS.
KR100416018B1 (en) * 2000-11-15 2004-01-31 이해영 Eccentricity diagnosis method and apparatus in rolling mill
KR20020050850A (en) * 2000-12-22 2002-06-28 이구택 Method of roll eccentricity detection based on nonlinear curve fitting
AU2002306098A1 (en) * 2001-11-28 2003-06-10 Posco Co., Ltd. Method and apparatus for detecting roll eccentricity utilizing pulse generator in rolling mill

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691547A (en) * 1983-09-08 1987-09-08 John Lysaght (Australia) Limited Rolling mill strip thickness controller
JPS61262415A (en) * 1985-05-17 1986-11-20 Kawasaki Steel Corp Method and device for controlling roll eccentricity of rolling mill
US4763273A (en) * 1986-07-25 1988-08-09 Kabushiki Kaisha Toshiba Apparatus for detecting eccentricity of roll in rolling mill

Also Published As

Publication number Publication date
KR100848628B1 (en) 2008-07-28
WO2003045600A1 (en) 2003-06-05
GB0410036D0 (en) 2004-06-09
AU2002306098A1 (en) 2003-06-10
KR20030043581A (en) 2003-06-02
US20050155402A1 (en) 2005-07-21
JP2005510360A (en) 2005-04-21
JP4017599B2 (en) 2007-12-05

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)