WO2010083726A1 - Procédé de commande de forme de bande ou brame laminée à chaud et dispositif associé - Google Patents

Procédé de commande de forme de bande ou brame laminée à chaud et dispositif associé Download PDF

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Publication number
WO2010083726A1
WO2010083726A1 PCT/CN2010/000088 CN2010000088W WO2010083726A1 WO 2010083726 A1 WO2010083726 A1 WO 2010083726A1 CN 2010000088 W CN2010000088 W CN 2010000088W WO 2010083726 A1 WO2010083726 A1 WO 2010083726A1
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WO
WIPO (PCT)
Prior art keywords
rolling
shape
induction heating
hot
rolled
Prior art date
Application number
PCT/CN2010/000088
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English (en)
Chinese (zh)
Inventor
李宏图
Original Assignee
中冶赛迪工程技术股份有限公司
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 中冶赛迪工程技术股份有限公司 filed Critical 中冶赛迪工程技术股份有限公司
Publication of WO2010083726A1 publication Critical patent/WO2010083726A1/fr

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Classifications

    • 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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates

Definitions

  • the present invention relates to a hot rolling apparatus and a hot rolling method, and relates to a method and apparatus for hot rolled strip and steel sheet control, and more particularly to a method and apparatus for hot rolled strip and steel sheet shape and precision control.
  • CVC Continuous Variable Crown
  • SMS Short Variable Crown
  • the change, the positive and negative convexity of the work roll gap can be obtained by the axial movement of the work roll, thereby realizing the control of the strip crown.
  • the convexity control ability and the axial movement amount of the work roll have a linear relationship. Since its development, it has been used in more than 250 racks.
  • the PC (Pair Cross) paired cross mill was developed by Mitsubishi Corporation of Japan. As shown in Figure 5, it changes the roll gap by the intersection of the upper and lower rolls.
  • the PC rolling mill is characterized in that the convexity control range is proportional to the square of the intersection angle ⁇ , and the intersection angle is 0 to 1.5° (the cross angle is controlled within 1° in actual use).
  • PC mills are available in single crossover and double crossover.
  • the crossover movement of a single cross is twice that of a double crossover. Therefore, in the wide strip steel rolling mill, the double crossover method is generally adopted, and the PC mill adopts ORG (On-line Roll Grinding) in the rear frame or The work roll axial movement (WRS) eliminates roll wear and achieves free rolling.
  • WRB/WRS Work Roll Bending I Work Roll Shifting
  • This method is a plate-shaped control method with a wide range of applications and a long history.
  • Hitachi which is called HCW
  • CLECIM in France
  • WRB/WRS uses work roll bending rolls (WRB) to control crown and flatness
  • WRS work roll axial movement
  • the ability to control the crown depends on the force of the bending roller.
  • Bar Heater is a technology invented by Toshiba Corporation of Japan (TOSHIBA) to improve the temperature reduction of the rolled piece along the length.
  • the principle is that the intermediate billet is heated by electromagnetic induction, and the tail of the rolled piece can be rolled.
  • the maximum temperature increase of 70 ° C, the device has many sets of application examples.
  • the existing shape control technology is based on changing the shape of the roll gap between the upper and lower work rolls.
  • more shape control methods are used, such as WRB/WRS, CVC, and PC. These techniques require the addition of bending equipment, work roll rolling equipment, roll crossover equipment, or grinding of the roll body into a curve on the mill. Equipment costs have increased a lot. Since the rolls need to be ground into a specific curve or the like, the roll consumption is increased.
  • the heat preservation cover (reducing the temperature drop of the rolling piece) and the intermediate billet heating device (compensating the temperature of the tail part of the rolling stock) are currently used.
  • hot coil boxes exchange of head and tail of the rolling stock
  • coiling furnace insulation rolling
  • speed-up rolling to reduce and overcome the adverse effects of rolling temperature reduction with time.
  • the commonality is to keep the parts warm and heated, and the equipment investment is large.
  • the invention is to change the temperature distribution in the width direction of the rolled piece. Adjusting the deformability of the metal to achieve the desired shape control.
  • the following two methods can be combined or used separately. (1) The precise spray of the aerosol cooling medium to the rolling stock changes the temperature distribution in the width direction of the rolling stock, (2) The electric induction heating device is used to selectively heat the rolled piece in the width direction. The cooling parameters and the electric induction heating parameters injected along the width of the rolling stock are adjusted according to the setting and feedback information to realize the open-loop or closed-loop shape control.
  • the electric induction heating device Arranging the aerosol cooling device before and after the reversing rolling mill, arranged in the tandem tropical steel rolling piece between the front of the rolling mill and the rolling mill frame, and simultaneously spraying the gas mist to the upper and lower surfaces of the rolling stock; the electric induction heating device Arranged in front of the mill or between the mill stands.
  • the electric induction heating device can be controlled and controlled in sections along the width direction of the rolling stock.
  • the invention is completely different from the existing shape control technology in principle, and has a simple structure and strong applicability. It can be used for the shape control of the newly built hot rolling mill or for the shape control of the existing rolling mill. It is also suitable for hot rolled strip and steel sheet rolling of non-ferrous metals. Has a wide range of promotional value.
  • the invention adopts the method of hot rolling strip steel and steel plate cooling and electric induction heating of the gas mist, and can achieve the following objectives more economically and effectively: First, changing the temperature distribution of the cross section of the rolled piece to correct the hot rolling Strip and steel plate crown, the purpose of the flatness of the plate shape defect; Second, through the cooling control of the length of the rolling piece, reduce or compensate the temperature unevenness of the rolled piece in the longitudinal direction to the thickness accuracy of the strip and the steel plate Influence, improve the thickness accuracy of strip and steel plate.
  • the selective stepwise heating is performed to change the temperature distribution in the width direction of the rolled piece.
  • the cooling medium used is cooling water atomized by air, that is, an aerosol cooling medium.
  • the proper amount of aerosol contact with high temperature will take away heat and evaporate into the air. It will not flow to the adjacent area like cooling water, which can achieve accurate partition cooling control of the rolling stock.
  • the choice of cooling method is the essence of the present invention One of the prime.
  • the electric induction heating device can heat and heat the rolled product in sections along the width direction of the rolling stock, which is another element of the present invention.
  • the cooling device of the present invention is disposed before and after the reversible steel plate rolling mill, and is disposed between the front of the rolling mill and the rolling stand in the tandem hot strip mill.
  • the electric induction heating device is arranged between the rolling mill front or the rolling mill stand. .
  • Closed-loop control can also be realized by the shape meter and thickness gauge matched by the rolling mill.
  • the arrangement of the spray beams of the aerosol-cooling device may be arranged in parallel with the transport roller path of the rolling stock, or may be arranged in a vertical roller path.
  • the invention may be used alone or in combination with other shape control devices.
  • the aerosol cooling device is mainly composed of a control valve station, a cooling header, an intermediate pipe and an automatic control system, wherein the control valve station, the cooling header and the intermediate pipeline station comprise two types of pipelines: a gas pipeline and a water pipeline.
  • the electric induction heating device is composed of an electric induction heating portion and a control portion.
  • Figure 1 to 3 are schematic diagrams of strip-shaped defects
  • Figure 4 is a schematic diagram of CVC shape control
  • Figure 5 is a schematic diagram of PC shape control
  • Figure 6 is a schematic diagram of the installation position of the aerosol cooling device and the electric induction heating device (taking the tandem rack as an example)
  • Figure 7 is a schematic diagram showing the relationship between the rolling stock and the aerosol nozzle.
  • Figure 8 is a schematic diagram showing the relationship between the rolled piece and the electric induction heating device.
  • FIG. 9 is the control logic diagram
  • the component 1 is an electric induction heating device
  • the component 2 is an aerosol cooling device
  • the component 3 is a rolling mill
  • the component 4 is a measuring instrument
  • the component 5 is a nozzle
  • the component 6 is a steel plate or a strip steel
  • the component 7 is an electric induction heating device.
  • the aerosol cooling device 1 is arranged before and after the reversible steel plate rolling mill 2, and is disposed between the front of the rolling mill 2 and the rolling mill 2 frame in the tandem hot strip mill 2; the aerosol cooling device 1 is mainly controlled by a valve station, a cooling set
  • the pipe, the intermediate pipe and the automatic control system are composed, wherein the control valve station, the cooling header and the intermediate pipeline station comprise two lines of a gas path and a water path.
  • the aerosol cooling device 1 is connected to the measuring instrument 3, and the measuring instrument 3 controls the valve opening degree of the control valve station, and the nozzle 4 sprays the cooling water atomized by the air, that is, the aerosol cooling medium.
  • the invention calculates the cooling effect of the strip/steel plate by the aerosol cooling model, and completes the setting of the cooling device.
  • the crown is obtained; the temperature correction requirement of the rolling stock and the set value of the aerosol cooling are obtained from the deformation resistance and the temperature model; the parameters such as the amount of the aerosol cooling water, the air pressure and the header are adjusted; finally, the temperature meter, the thickness meter, and the straightness meter are obtained.
  • the measured value of the convexity meter is obtained.
  • the rolling will continue. Otherwise, the parameters such as the amount of aerosol cooling water, air pressure and header will be adjusted until the measured value and the set value are consistent.
  • the cooling parameters injected along the width of the rolling stock are adjusted according to the setting and feedback information, and the open-loop or closed-loop shape control can be realized.
  • the invention adjusts the deformation ability of the metal by changing the temperature distribution in the width direction of the rolling piece, thereby achieving the ideal shape control, that is, selectively spraying the cooling medium to the rolling piece, changing the temperature distribution in the width direction of the rolling piece;
  • the front part sprays a certain cooling medium, and gradually reduces the cooling amount along the length of the rolling piece to achieve uniform rolling temperature; this function can be selectively used according to the process requirements; it can also pass the shape meter and test of the rolling mill.
  • Thick gauges implement closed loop control.
  • the arrangement of the spray beam of the aerosol-cooling device may be arranged in parallel with the conveying roller path of the rolling stock or may be arranged in a vertical roller path; the invention may be used alone or in combination with other shape control devices.
  • the invention fully satisfies the requirements for the control of the crown, flatness and thickness precision of the hot rolled strip and the steel sheet, and produces a high quality wide steel plate or strip.
  • the invention is completely different from the existing shape control technology in principle, and has a simple structure and strong applicability. It can be used for the shape control of new hot rolling mills or for the shape control of existing rolling mills. Suitable for hot rolled strip and steel sheet rolling of non-ferrous metals. Has a wide range of promotional value.

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

Abstract

La présente invention se rapporte à un procédé de commande de forme d'une bande laminée à chaud ou d'une brame laminée à chaud, qui ajuste la déformabilité du métal grâce à l'influence sur la répartition de température sur la largeur d'une masse laminée, obtenant ainsi une commande de forme idéale. Les deux manières suivantes peuvent être utilisées seules ou en combinaisons : 1) la pulvérisation précise d'un agent de refroidissement atomisé vers la masse laminée de manière à modifier la répartition de température sur la largeur de la masse laminée, 2) le chauffage sélectif de la masse laminée en segments sur la largeur de la masse laminée à l'aide d'éléments de chauffage par induction électrique. Les paramètres de refroidissement et/ou chauffage par induction sont ajustés sur la largeur de la masse laminée sur la base des informations de retour et prédéterminées dans le procédé précité, obtenant ainsi une commande de forme à boucle ouverte ou à boucle fermée. La présente invention se rapporte également à un dispositif de commande de forme d'une bande laminée à chaud ou d'une brame laminée à chaud utilisé dans le procédé précité. Des éléments de refroidissement atomisés (1) sont utilisés sur l'amont et/ou l'aval d'un laminoir réversible, ou sur l'amont d'un laminoir et/ou entre les pieds d'un laminoir tandem. Les éléments de refroidissement pulvérisent simultanément l'agent atomisé vers les surfaces supérieure et inférieure de la masse laminée, et/ou les éléments de chauffage par induction électrique (7) chauffent la masse laminée en segments. Le dispositif de commande de forme d'une bande laminée à chaud ou d'une brame laminée à chaud présente une structure simple, et peut avoir de vastes applications.
PCT/CN2010/000088 2009-01-21 2010-01-20 Procédé de commande de forme de bande ou brame laminée à chaud et dispositif associé WO2010083726A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2009101031097A CN101780478B (zh) 2009-01-21 2009-01-21 一种热轧带钢及钢板板形和精度控制的方法和设备
CN200910103109.7 2009-01-21

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Publication Number Publication Date
WO2010083726A1 true WO2010083726A1 (fr) 2010-07-29

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3284546A1 (fr) * 2016-08-19 2018-02-21 SMS Group GmbH Procédé de laminage d'un produit laminé dans un train de laminoir et train de laminoir
CN110184444A (zh) * 2019-07-05 2019-08-30 安徽工业大学 一种加热炉试验装置
CN111940517A (zh) * 2019-05-14 2020-11-17 东芝三菱电机产业***株式会社 边缘加热器的控制***
CN113275388A (zh) * 2021-05-17 2021-08-20 日照钢铁控股集团有限公司 一种热轧薄带钢生产的控温***及方法
CN114951307A (zh) * 2022-05-20 2022-08-30 广西钢铁集团有限公司 一种热轧带肋钢筋直轧分段控制冷却方法

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CN102581043B (zh) * 2011-01-18 2014-08-20 宝山钢铁股份有限公司 用于带钢热轧过程的水雾冷却***及水雾冷却方法
CN102615491B (zh) * 2011-01-31 2015-05-20 肖克建 铜材的加工方法
US9566625B2 (en) 2011-06-07 2017-02-14 Nippon Steel & Sumitomo Metal Corporation Apparatus for cooling hot-rolled steel sheet
US9186710B2 (en) 2011-06-07 2015-11-17 Nippon Steel & Sumitomo Metal Corporation Method for cooling hot-rolled steel sheet
US9211574B2 (en) 2011-07-27 2015-12-15 Nippon Steel & Sumitomo Metal Corporation Method for manufacturing steel sheet
CN103998154B (zh) * 2012-12-06 2015-09-09 新日铁住金株式会社 钢板制造方法
CN103990651B (zh) * 2013-02-19 2016-02-24 宝山钢铁股份有限公司 一种针对薄宽带钢高次边浪的控制装置及其控制方法
CN104942023B (zh) * 2014-03-31 2017-01-04 宝山钢铁股份有限公司 一种热轧薄规格奥氏体不锈钢带钢板形控制方法
CN104028560B (zh) * 2014-06-18 2016-08-24 内蒙古包钢钢联股份有限公司 消除45#钢板头尾厚度中心分层的方法
CN105268747B (zh) * 2014-06-29 2017-05-17 上海梅山钢铁股份有限公司 一种热轧板带凸度在线闭环控制方法
CN104438356B (zh) * 2014-09-23 2017-04-05 北京首钢股份有限公司 一种改善薄规格集装箱板边部浪形的方法
CN109420682B (zh) * 2017-08-29 2020-12-18 宝山钢铁股份有限公司 一种冷轧薄带钢的板形控制方法
CN110090866B (zh) * 2018-01-29 2020-11-20 晟通科技集团有限公司 铸轧板型控制装置及方法
CN108393357A (zh) * 2018-04-11 2018-08-14 新疆八钢铁股份有限公司 一种防止切分导卫内粘钢的轧制方法
CN109731919A (zh) * 2018-12-27 2019-05-10 西南铝业（集团）有限责任公司 一种用于热轧铝合金板材横向不平度的控制方法
CN112828053B (zh) * 2021-01-04 2022-06-14 宝钢湛江钢铁有限公司 一种冷却后带钢全长板形的检测方法
CN115228929A (zh) * 2022-07-29 2022-10-25 广西广盛新材料科技有限公司 带钢生产的温度控制方法、装置、终端设备及存储介质

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JPH0422504A (ja) * 1990-05-18 1992-01-27 Toshiba Corp 熱間圧延機のエッジ加熱制御装置
US6327883B1 (en) * 1999-07-17 2001-12-11 Bwg Bergwerk-Und Walzwerk-Maschinenbau Gmbh Method of flattening metal strip
CN1336853A (zh) * 1999-11-18 2002-02-20 新日本制铁株式会社 金属板平坦度控制方法与装置
CA2679336A1 (fr) * 2007-05-30 2008-12-04 Sms Siemag Aktiengesellschaft Dispositif pour influer sur la repartition de temperature sur une largeur

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH0422504A (ja) * 1990-05-18 1992-01-27 Toshiba Corp 熱間圧延機のエッジ加熱制御装置
US6327883B1 (en) * 1999-07-17 2001-12-11 Bwg Bergwerk-Und Walzwerk-Maschinenbau Gmbh Method of flattening metal strip
CN1336853A (zh) * 1999-11-18 2002-02-20 新日本制铁株式会社 金属板平坦度控制方法与装置
CA2679336A1 (fr) * 2007-05-30 2008-12-04 Sms Siemag Aktiengesellschaft Dispositif pour influer sur la repartition de temperature sur une largeur

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3284546A1 (fr) * 2016-08-19 2018-02-21 SMS Group GmbH Procédé de laminage d'un produit laminé dans un train de laminoir et train de laminoir
CN111940517A (zh) * 2019-05-14 2020-11-17 东芝三菱电机产业***株式会社 边缘加热器的控制***
CN111940517B (zh) * 2019-05-14 2022-07-08 东芝三菱电机产业***株式会社 边缘加热器的控制***
CN110184444A (zh) * 2019-07-05 2019-08-30 安徽工业大学 一种加热炉试验装置
CN110184444B (zh) * 2019-07-05 2024-02-27 安徽工业大学 一种加热炉试验装置
CN113275388A (zh) * 2021-05-17 2021-08-20 日照钢铁控股集团有限公司 一种热轧薄带钢生产的控温***及方法
CN114951307A (zh) * 2022-05-20 2022-08-30 广西钢铁集团有限公司 一种热轧带肋钢筋直轧分段控制冷却方法
CN114951307B (zh) * 2022-05-20 2024-05-28 广西钢铁集团有限公司 一种热轧带肋钢筋直轧分段控制冷却方法

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