WO2009136435A1 - Dispositif de commande de l'épaisseur de plaque pour laminoir - Google Patents

Dispositif de commande de l'épaisseur de plaque pour laminoir Download PDF

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Publication number
WO2009136435A1
WO2009136435A1 PCT/JP2008/058497 JP2008058497W WO2009136435A1 WO 2009136435 A1 WO2009136435 A1 WO 2009136435A1 JP 2008058497 W JP2008058497 W JP 2008058497W WO 2009136435 A1 WO2009136435 A1 WO 2009136435A1
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WO
WIPO (PCT)
Prior art keywords
roll
roll eccentricity
eccentricity
plate thickness
thickness
Prior art date
Application number
PCT/JP2008/058497
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English (en)
Japanese (ja)
Inventor
直博 久保
Original Assignee
東芝三菱電機産業システム株式会社
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 東芝三菱電機産業システム株式会社 filed Critical 東芝三菱電機産業システム株式会社
Priority to JP2010510976A priority Critical patent/JP5170240B2/ja
Priority to KR1020107022667A priority patent/KR101208811B1/ko
Priority to CN200880129128.0A priority patent/CN102015136B/zh
Priority to PCT/JP2008/058497 priority patent/WO2009136435A1/fr
Publication of WO2009136435A1 publication Critical patent/WO2009136435A1/fr

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    • 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

Definitions

  • This invention relates to a plate thickness control device that suppresses fluctuations in the plate thickness of a rolled material by controlling a roll gap in a rolling mill that rolls the rolled material with rolls arranged vertically.
  • sheet thickness control In plate rolling of a steel plate or the like performed by a rolling mill, sheet thickness control (AGC: Automatic Gage Control) has been conventionally applied.
  • AGC Automatic Gage Control
  • the roll gap is controlled so that the thickness in the rolling direction of the rolled material is kept constant by detecting (estimating) the thickness variation of the rolled material by some means.
  • AGC Automatic Gage Control
  • the plate thickness variation performed by AGC for example, a method of estimating the plate thickness variation during rolling from the rolling load, or the plate thickness during the rolling (gauge meter plate thickness from the rolling load and the roll gap).
  • a method of detecting a plate thickness deviation with a plate thickness meter For example, a method of estimating the plate thickness variation during rolling from the rolling load, or the plate thickness during the rolling (gauge meter plate thickness from the rolling load and the roll gap).
  • the roll eccentricity usually occurs when a key is used for assembling a backup roll.
  • Roll eccentricity also occurs when the roll cross-section is not perfect due to non-uniform polishing of the roll, or when the roll is thermally expanded during rolling and the roll cross-section is no longer perfect. Will occur.
  • produces for the above reasons, a roll gap will fluctuate
  • the fluctuation of the roll gap due to roll eccentricity cannot be detected by a reduction position control device that controls the reduction position of the roll. For this reason, the roll eccentricity becomes a disturbance of the plate thickness control.
  • the roll eccentricity has the same amount (eccentricity amount) at the same rotation angle for the upper and lower rolls in the short term. However, the rotation angle at which roll eccentricity occurs and the amount of eccentricity may change as rolling progresses.
  • Roll eccentricity control 1 Before rolling, the roll is rotated by a kiss roll (a state in which a load is generated by contacting the upper and lower work rolls), and the load at that time is detected. Further, the detected load is analyzed by a fast Fourier transform or a means equivalent thereto, and the phase and amplitude of the roll eccentricity are identified. During rolling, feedback control using the rolling load is not performed, and the roll gap operation amount is output so as to compensate for roll gap fluctuation caused by roll eccentricity using the roll eccentricity parameter ( For example, see Patent Documents 1 and 2).
  • (B) Roll eccentricity control 2 The plate thickness variation is measured with a plate thickness meter installed on the exit side of the rolling mill. Then, a fluctuation component synchronized with the rotation of the roll is extracted from the measured thickness fluctuation, and the rotation position of the roll at which the fluctuation component is generated is specified. Based on the obtained information, the roll gap is operated according to the rotation of the roll.
  • (C) Roll eccentricity control 3 Measure rolling load fluctuations during rolling. Then, a fluctuation component synchronized with the rotation of the roll is extracted from the measured rolling load fluctuation and associated with the rotation position of the roll. And based on the obtained information, a rolling load fluctuation
  • Japanese Unexamined Patent Publication No. 60-141321 Japanese Unexamined Patent Publication No. Sho 62-254915 Japanese Unexamined Patent Publication No. 11-77128 Japanese Unexamined Patent Application Publication No. 2002-282919
  • the present invention has been made to solve the above-described problems, and its purpose is to achieve roll eccentricity even when roll eccentric parameters change over time or when the upper and lower roll diameters are different.
  • the present invention is to provide a plate thickness control apparatus for a rolling mill that can sufficiently suppress the resulting plate thickness variation. Further, even when there is a rolling load fluctuation component having a period close to the roll eccentricity period, or even when the distribution of the rolling record data is biased, the rolling mill capable of exhibiting the above effect similarly. It is providing the plate
  • a sheet thickness control device for a rolling mill includes a work roll arranged vertically and a backup roll that supports the work roll from above and below, and controls the thickness of the rolling mill that rolls a rolled material by the work roll.
  • a device that detects the rolling load includes a roll position measuring device that measures the roll gap, a plate thickness meter that detects the thickness of the rolled material after rolling, and the rotation angle of the backup roll.
  • Rotation angle calculating means for calculating each of the above, a rolling gauge detected by a load detector, and a gauge meter plate for calculating a gauge meter plate thickness of the rolled material based on the roll gap measured by the rolling position measuring instrument Thickness calculation means and the gauge meter thickness calculation means until an arbitrary point of the rolled material rolled by the work roll arrives at the thickness detection position of the thickness gauge.
  • the gauge meter plate thickness delay means for storing the gauge meter plate thickness at the arbitrary point calculated in the above, the gauge meter plate thickness at the arbitrary point stored in the gauge meter plate thickness delay means, and the plate thickness Based on the thickness of the arbitrary point detected by the meter, the roll eccentric amount calculating means for calculating the roll eccentric amount when the arbitrary point is rolled by the work roll, and each calculated by the rotation angle calculating means Roll eccentricity that stores the roll eccentricity calculated by the roll eccentricity calculating means on the basis of the rotation angle in association with each rotation angle of the upper and lower backup rolls when the arbitrary point is rolled by the work roll Based on the roll eccentricity stored in the amount storage means and the roll eccentricity storage means, the phase and amplitude of the roll eccentricity are calculated for each of the upper and lower backup rolls.
  • the roll eccentricity storage means sets the division number when the rotation angle of the upper backup roll is divided into a predetermined number and the rotation angle of the lower backup roll as the predetermined A table in which the division number when dividing into numbers is arranged vertically and horizontally, and by storing the roll eccentricity calculated by the roll eccentricity calculating means in the corresponding cell of the table, A distribution curved surface is obtained.
  • the roll eccentricity parameter calculation means approximates the curved surface by Fourier analysis to the roll eccentricity distribution curved surface obtained by the roll eccentricity storage means. By doing so, the phase and amplitude of roll eccentricity are obtained for each of the upper and lower backup rolls.
  • FIG. 1 It is a block diagram which shows the plate
  • FIG. 1 is a block diagram showing a sheet thickness control apparatus for a rolling mill according to Embodiment 1 of the present invention
  • FIG. 2 is a diagram for explaining specific functions of the sheet thickness control apparatus for a rolling mill shown in FIG.
  • reference numeral 1 denotes a rolled material such as a steel plate rolled by a rolling mill, and is rolled by work rolls 2 and 3 arranged above and below.
  • 4 and 5 are backup rolls that support the work rolls 2 and 3 from above and below.
  • the reduction position control device 7 controls the roll gap (the gap between the upper and lower work rolls 2 and 3) so that the thickness of the rolled material 1 becomes a desired value.
  • the reduction position control device 7 is provided with a reduction position measuring device 8 that measures the reduction position. That is, the reduction position control device 7 can measure the roll gap by the function of the reduction position measuring device 8.
  • a change (fluctuation component) in the roll gap caused by roll eccentricity cannot be measured by the above-described reduction position measuring instrument 8.
  • the thickness gauge 9 is a thickness gauge provided on the exit side of the rolling mill.
  • the thickness gauge 9 detects the thickness of the rolled material 1 after being rolled by the work rolls 2 and 3.
  • Reference numerals 10 and 11 denote rotation angle detectors for detecting the rotation angles of the backup rolls 4 and 5.
  • the backup rolls 4 and 5 rotate in conjunction with the work rolls 2 and 3 when the work rolls 2 and 3 are driven (rotated). At this time, the rotation angle of the upper backup roll 4 is independently detected by the rotation angle detector 10, and the rotation angle of the lower backup roll 5 is independently detected by the rotation angle detector 11.
  • FIG. 1 shows a configuration in which pulse generators attached to the backup rolls 4 and 5 are used as the rotation angle detectors 10 and 11. That is, in the method shown in FIG. 1, the rotation angle detectors 10 and 11 directly detect the rotation angles of the backup rolls 4 and 5.
  • the rotation angle detectors 10 and 11 are not limited to such a method, and may employ another method having the same function as described above. For example, a proximity photo sensor or the like is attached to the backup rolls 4 and 5, and a reference pulse for each rotation of the backup rolls 4 and 5 is generated. Then, the reference pulse is detected, and the rotation angles of the backup rolls 4 and 5 are calculated using the rotation angles or rotation speeds of the work rolls 2 and 3.
  • the rotation angle detectors 10 and 11 can also be configured by such a method.
  • the plate thickness control apparatus includes a rotation angle calculation unit 12, a gauge meter plate thickness calculation unit 13, a gauge meter plate thickness delay unit 14, a roll eccentric amount calculation unit 15, and a roll eccentric amount storage unit 16.
  • Various means such as a roll eccentricity parameter calculation means 17 and a control operation amount calculation means 18 are provided.
  • the rotation angle calculation means 12 has a function of calculating the rotation angles of the backup rolls 4 and 5 for each of the upper and lower sides. That is, the rotation angle calculation means 12 determines the rotation angle of the upper backup roll 4 based on the detection signal from the rotation angle detector 10 and the rotation of the lower backup roll 5 based on the detection signal from the rotation angle detector 11. The angles are calculated in the range of 0 to 360 degrees, respectively.
  • the gauge meter plate thickness calculating means 13 has a function of calculating the gauge meter plate thickness of the rolled material 1.
  • the gauge meter plate thickness is the plate thickness of the rolled material 1 when being rolled by the work rolls 2 and 3, and means the thickness of the rolled material 1 directly under the rolling mill.
  • the gauge meter thickness calculation means 13 is based on the rolling load detected by the load detector 6 and the roll gap measured by the reduction position measuring device 8 (the reduction position control device 7), for example,
  • the gauge meter plate thickness is calculated using the following formula (principle formula for gauge meter plate thickness calculation).
  • the gauge meter plate thickness delay means 14 is used until the arbitrary point (for example, point A) of the rolled material 1 rolled by the work rolls 2 and 3 reaches the plate thickness detection position of the plate thickness meter 9. It has a function of storing the gauge meter plate thickness at the point A calculated by the calculation means 13. Further, the gauge meter plate thickness delay means 14 uses the output value of the roll eccentricity control (control operation amount calculation means 18) when the point A is rolled directly under the rolling mill as the gauge meter plate thickness at the point A.
  • the gauge meter plate thickness delay means 14 uses the output value of the roll eccentricity control (control operation amount calculation means 18) when the point A is rolled directly under the rolling mill as the gauge meter plate thickness at the point A.
  • the actual plate thickness at point A is measured by the plate thickness meter 9
  • the actual plate thickness can be compared with the gauge meter plate thickness at point A and the output value of roll eccentricity control. It becomes like this.
  • the above operation by the gauge meter plate thickness delay means 14 is also performed from
  • the roll eccentricity calculating means 15 estimates the roll eccentricity from the deviations of the gauge meter plate thickness and the actual plate thickness, so that, for example, the fluctuation component of the rolling load caused by the skid mark is the backup roll 4 and Even when the rotation period is close to 5, the roll eccentricity can be appropriately determined without being affected by the rolling load fluctuation component due to the skid mark. Further, the above calculation by the roll eccentricity calculating means 15 is performed from the leading end to the tail end of the rolled material 1, and while the rolled material 1 is being rolled by a rolling mill, Performed while measurements are being taken.
  • each function of the gauge meter plate thickness delay means 14, the roll eccentric amount calculation means 15, and the roll eccentric amount storage means 16 will be specifically described with reference to FIG.
  • data storage and reading are managed by the division number by equally dividing each rotation of the backup rolls 4 and 5 into n equal parts.
  • the roll eccentric amount calculating means 15 calculates the gauge meter plate thickness and the roll eccentric amount (use value) at the point where the actual plate thickness is detected by the plate thickness meter 9. Read out from the gauge meter thickness delay means 14.
  • FIG. 2 shows a state in which the A2 point of the rolled material 1 is arranged at the plate thickness detection position of the plate thickness gauge 9, and when the A2 point is rolled directly under the rolling mill, It shows that the division number is 10 and the division number of the lower backup roll 5 is 4.
  • the roll eccentricity calculation means 15 is stored in the column of the actual plate thickness A2 detected by the plate thickness meter 9 and the division No 4 of the backup roll 5 below the gauge meter plate thickness delay means 14. Based on the gauge meter plate thickness and the roll eccentricity (use value), the roll eccentricity is calculated.
  • the roll eccentricity storage unit 16 includes a table for storing the calculation result of the roll eccentricity calculation unit 15 in association with the division numbers of the backup rolls 4 and 5. That is, in this table, as shown in FIG. 2, the division numbers when the rotation angles of the upper and lower backup rolls 4 and 5 are divided into n are arranged vertically and horizontally. Then, the roll eccentricity storage means 16 stores the roll eccentricity calculated by the roll eccentricity calculation means 15 in the corresponding cell of this table, and obtains a roll eccentricity distribution curved surface. For example, if the roll eccentricity calculation means 15 obtains a calculation result related to the A2 point, the result is transferred to the cell where the division number 10 of the upper backup roll 4 and the division number 4 of the lower backup roll 5 intersect. It is stored as the core amount (next value).
  • FIG. 3 is a view showing a distribution curved surface of the roll eccentricity stored in the roll eccentricity storage means, and shows an example of the obtained distribution curved surface.
  • the roll eccentricity parameter calculating means 17 is based on the roll eccentricity amount stored in the roll eccentricity amount storage means 16 for each of the upper and lower backup rolls 4 and 5, ie, the roll eccentricity parameter, that is, the roll eccentricity.
  • the phase (position) and amplitude are calculated.
  • the roll eccentricity parameter calculating means 17 approximates the roll eccentricity distribution curved surface shown in FIG. 3 with a curved surface by Fourier analysis, so that the roll eccentricity is calculated for each of the upper and lower backup rolls 4 and 5. Calculate the phase and amplitude of the wick.
  • the roll eccentric waveform has a primary component and a secondary component, the waveform is represented by the following equation.
  • the roll eccentricity parameter obtained by the calculation of the roll eccentricity parameter calculating means 17 is updated for each rolling when the length of the rolled material 1 is short as in the case of thick plate rolling. Moreover, when the length of the rolling material 1 is long like thin plate rolling, renewal is repeated several times during rolling. With this configuration, even when the roll eccentricity parameter changes with time, the change can be followed and the latest state can always be maintained. Moreover, since the distribution curved surface of the roll eccentric amount stored in the roll eccentric amount storage means 16 is identified by Fourier transform as described above, the rolling record data for the rotation angles of the backup rolls 4 and 5 is identified. Even if the distribution is biased, an appropriate control amount can be obtained for all rotation angles.
  • FIG. 4 is a diagram showing a distribution curved surface of the roll eccentricity identified by the sheet thickness control device of the rolling mill shown in FIG. That is, FIG. 4 is an example in which the roll eccentricity parameter is identified and the distribution curved surface of the roll eccentricity is reproduced, and corresponds to the actual distribution curved surface shown in FIG. As can be seen from FIG. 4, the primary waveform and secondary waveform of roll eccentricity are accurately reproduced.
  • Embodiment 1 of the present invention as described above, even when the roll eccentricity parameter changes with time or when the diameters of the upper and lower backup rolls 4 and 5 are different, due to roll eccentricity.
  • produces can fully be suppressed. Further, even when there is a fluctuation component of the rolling load having a period close to the period of roll eccentricity, or even when the distribution of the rolling record data is biased, it similarly occurs due to roll eccentricity. Variations in plate thickness can be sufficiently suppressed. For this reason, it becomes possible to manufacture a high-quality product.
  • the sheet thickness control device for a rolling mill according to the present invention can be applied to a rolling mill that rolls a rolled material with rolls arranged vertically.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

L'invention porte sur un dispositif de commande d'épaisseur de plaque pour un laminoir, lequel dispositif de commande peut entièrement réduire la variation de l'épaisseur de plaque survenant d'une excentricité de mandrin de cylindre même dans le cas d'une détérioration, au cours du temps, des paramètres d'excentricité de mandrin de cylindre ou dans n'importe quel autre cas. Dans un tel but, l'ampleur d'excentricité de mandrin de cylindre est tout d'abord déterminée à partir d'une épaisseur de plaque de calibre et d'une épaisseur de plaque réelle. Ensuite, une surface incurvée correspondant à une courbe de distribution pour l'ampleur déterminée d'excentricité de mandrin de cylindre est représentée pour identifier la surface incurvée à l'aide de l'analyse de Fourier, calculant ainsi une phase et une amplitude de l'excentricité de mandrin de cylindre pour chacun des cylindres d'appui supérieur et inférieur. Par la suite, les écartements des cylindres sont commandés selon le résultat de calcul pour réduire les composantes de variation de l'épaisseur de plaque d'un matériau laminé, survenant en raison de l'excentricité du mandrin de cylindre.
PCT/JP2008/058497 2008-05-07 2008-05-07 Dispositif de commande de l'épaisseur de plaque pour laminoir WO2009136435A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2010510976A JP5170240B2 (ja) 2008-05-07 2008-05-07 圧延機の板厚制御装置
KR1020107022667A KR101208811B1 (ko) 2008-05-07 2008-05-07 압연기의 판 두께 제어 장치
CN200880129128.0A CN102015136B (zh) 2008-05-07 2008-05-07 轧机的板厚控制装置
PCT/JP2008/058497 WO2009136435A1 (fr) 2008-05-07 2008-05-07 Dispositif de commande de l'épaisseur de plaque pour laminoir

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2008/058497 WO2009136435A1 (fr) 2008-05-07 2008-05-07 Dispositif de commande de l'épaisseur de plaque pour laminoir

Publications (1)

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WO2009136435A1 true WO2009136435A1 (fr) 2009-11-12

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PCT/JP2008/058497 WO2009136435A1 (fr) 2008-05-07 2008-05-07 Dispositif de commande de l'épaisseur de plaque pour laminoir

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JP (1) JP5170240B2 (fr)
KR (1) KR101208811B1 (fr)
CN (1) CN102015136B (fr)
WO (1) WO2009136435A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101368267B1 (ko) * 2011-09-29 2014-02-28 현대제철 주식회사 소재 형상 측정장치
JP2020037124A (ja) * 2018-09-05 2020-03-12 株式会社Uacj 制御装置及び制御方法

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CN102513376B (zh) * 2011-12-31 2014-10-22 燕山大学 四、六辊板带轧机辊系偏心相位辨识检测方法
JP5907264B2 (ja) * 2012-07-04 2016-04-26 東芝三菱電機産業システム株式会社 厚板マルチローリングの制御装置及び制御方法
KR101458121B1 (ko) 2013-12-26 2014-11-04 주식회사 포스코 압연모듈 및 그 제어방법
CN105618480B (zh) * 2014-10-29 2019-01-01 镇江龙源铝业有限公司 轧制铝箔厚薄差精度的控制系统
JP6438753B2 (ja) * 2014-12-05 2018-12-19 株式会社日立製作所 タンデム圧延ミルの制御装置およびタンデム圧延ミルの制御方法
JP6404195B2 (ja) * 2015-09-16 2018-10-10 株式会社日立製作所 プラント制御装置、圧延制御装置、プラント制御方法およびプラント制御プログラム
WO2017145236A1 (fr) * 2016-02-22 2017-08-31 東芝三菱電機産業システム株式会社 Dispositif de régulation pour une installation
JP6672094B2 (ja) * 2016-07-01 2020-03-25 株式会社日立製作所 プラント制御装置、圧延制御装置、プラント制御方法およびプラント制御プログラム

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JPH05317942A (ja) * 1992-05-14 1993-12-03 Kawasaki Steel Corp 圧延機の板厚制御方法およびその装置
JP2000140919A (ja) * 1998-11-05 2000-05-23 Furukawa Electric Co Ltd:The 板厚変動解析装置、および板厚制御装置とその制御方法、並びに板厚制御装置を備えた圧延機
JP2001150010A (ja) * 1999-11-26 2001-06-05 Kawasaki Steel Corp ロール偏芯量検出方法及び板厚制御方法
JP2004209498A (ja) * 2002-12-27 2004-07-29 Nippon Steel Corp 圧延機の板厚制御装置

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WO2006123394A1 (fr) * 2005-05-16 2006-11-23 Toshiba Mitsubishi-Electric Industrial Systems Corporation Dispositif de controle d'epaisseur de tole
JP4609197B2 (ja) * 2005-06-23 2011-01-12 株式会社日立製作所 板厚制御装置
JP5317942B2 (ja) * 2009-12-07 2013-10-16 横浜製機株式会社 外燃式クローズドサイクル熱機関

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JPH05317942A (ja) * 1992-05-14 1993-12-03 Kawasaki Steel Corp 圧延機の板厚制御方法およびその装置
JP2000140919A (ja) * 1998-11-05 2000-05-23 Furukawa Electric Co Ltd:The 板厚変動解析装置、および板厚制御装置とその制御方法、並びに板厚制御装置を備えた圧延機
JP2001150010A (ja) * 1999-11-26 2001-06-05 Kawasaki Steel Corp ロール偏芯量検出方法及び板厚制御方法
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Publication number Priority date Publication date Assignee Title
KR101368267B1 (ko) * 2011-09-29 2014-02-28 현대제철 주식회사 소재 형상 측정장치
JP2020037124A (ja) * 2018-09-05 2020-03-12 株式会社Uacj 制御装置及び制御方法
JP7103896B2 (ja) 2018-09-05 2022-07-20 株式会社Uacj 制御装置及び制御方法

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KR101208811B1 (ko) 2012-12-06
JP5170240B2 (ja) 2013-03-27
JPWO2009136435A1 (ja) 2011-09-01
KR20100116714A (ko) 2010-11-01
CN102015136B (zh) 2015-04-08
CN102015136A (zh) 2011-04-13

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