EP2416900B2 - Verfahren und vorrichtung zum aufbereiten von warmwalzgut - Google Patents

Verfahren und vorrichtung zum aufbereiten von warmwalzgut Download PDF

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Publication number
EP2416900B2
EP2416900B2 EP10711199.9A EP10711199A EP2416900B2 EP 2416900 B2 EP2416900 B2 EP 2416900B2 EP 10711199 A EP10711199 A EP 10711199A EP 2416900 B2 EP2416900 B2 EP 2416900B2
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EP
European Patent Office
Prior art keywords
rolling stock
rolling
rotor
temperature
induction furnace
Prior art date
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Application number
EP10711199.9A
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German (de)
English (en)
French (fr)
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EP2416900A1 (de
EP2416900B1 (de
Inventor
Reinhard Karl
Gerald Hohenbichler
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.)
Primetals Technologies Austria GmbH
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Primetals Technologies Austria GmbH
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Application filed by Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
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Publication of EP2416900B1 publication Critical patent/EP2416900B1/de
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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
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or 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
    • B21B45/04—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 de-scaling, e.g. by brushing
    • B21B45/08—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 de-scaling, e.g. by brushing hydraulically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C43/00—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0035—Forging or pressing devices as units
    • B21B15/005—Lubricating, cooling or heating means
    • 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
    • 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
    • B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
    • 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
    • B21B45/04—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 de-scaling, e.g. by brushing
    • B21B45/06—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 de-scaling, e.g. by brushing of strip material

Definitions

  • Devices for implementing the method for processing rolling stock prior to forming in at least one roll stand or a roll stand essentially comprise an induction furnace, subsequently a descaling device and at least one roll stand or a roll stand.
  • a cast strand cast in a continuous casting process is descaled, heated to rolling temperature and finished rolled in a multi-stand hot strip rolling mill, with the cast strand after exiting a strand guide, before entering a heat equalization furnace and / or after exiting a heat equalization furnace and entering the hot strip rolling line is freed from scale and / or casting powder on one or both strand surfaces by several rotating nozzles from which hydraulic fluid is sprayed.
  • the rolling stock can be, for example, a thin or thick slab or a finite or endless hot strand (e.g. from an ESP Endless Strip Production, CSP Compact Strip Production or similar systems). Furthermore, it does not matter whether the rolling in the rolling stand or the rolling series is preliminary, intermediate or final rolling.
  • the heated rolling stock is heated by at least one rotating water or liquid jet from at least one rotor of the rotary descaling device (the person skilled in the art is familiar with rotary descaling devices, so refer to the patent application for a basic description WO97 / 27955 A1 the applicant is referred), whereby the rolling stock is only slightly cooled at high descaling performance.
  • At least one actual temperature of the rolling stock is recorded by means of the temperature measuring device, for example a pyrometer or a thermography camera, and fed to the controller.
  • the analog or digital controller determines with the aid of a linear or preferably non-linear control law and taking into account a target temperature, at least one manipulated variable, which is fed to a control element, with at least one inductor of the induction furnace being controlled so that the temperature of the descaled whale material is the target Temperature as close as possible.
  • the method according to the invention ensures that the rolling stock is optimally prepared for a subsequent rolling process, the rolling stock being heated very energy-efficiently and then descaled with the lowest possible temperature drop and high descaling performance.
  • the regulation of the temperature of the rolling stock as it enters the first roll stand or rolling series also ensures that the rolling stock has the correct temperature for the subsequent thermomechanical forming, which ensures a high quality of the rolled product.
  • a temperature profile i.e. the discrete or continuous temperature distribution depending on the width direction
  • the width direction is that direction which is orthogonal to the transport direction and to the thickness direction of the rolling stock.
  • the controller determines several manipulated variables that are fed to several regulating organs, whereby several inductors of the induction furnace are controlled in such a way that the temperature profile of the descaled whale material corresponds as closely as possible to the target temperature profile.
  • the rolling stock is heated in the induction furnace by means of at least one inductor with longitudinal field or transverse field heating, the inductor being controlled with variable power and possibly variable frequency as a function of the manipulated variable.
  • inductors are known to the person skilled in the art, e.g. from the textbook
  • rolling stock with a thickness of ⁇ 6 mm, preferably by means of transverse field heating;
  • a particularly energy-efficient descaling and a particularly low water consumption of the rotary descaling device is possible if the rotating water jet acting on the rolling stock is interrupted, i.e. a water jet from a nozzle does not act permanently on the rolling stock when a rotor of the descaling device rotates 360 °. Alternatively, it is of course also possible for the water jet to act permanently on the rolling stock.
  • a particularly high descaling performance can be achieved if the scale layer of the heated rolling stock is cooled considerably by water jets from a pre-cooling device, so that cracks are initiated in the scale layer.
  • the temperature measuring device is advantageous to design the temperature measuring device as a temperature profile measuring device for measuring several surface temperatures of the rolling stock, the latter being connected to at least one control device.
  • the induction furnace either exclusively has inductors with longitudinal field or transverse field heating, or has at least one inductor in each case with longitudinal field and transverse field heating.
  • each rotor has an interrupter for generating an interrupted water jet.
  • stationary control disks have proven themselves for this.
  • a particularly low-maintenance construction can be achieved if each rotor has 4 to 12 rotating nozzles. This choice enables the circumferential speed of the rotors to be kept low, which leads to particularly low wear on the rotors. With regard to the embodiment of the rotating nozzles, it is advantageous to design the nozzles either as full, hollow or flat jet nozzles.
  • a particularly favorable system configuration can be achieved if a casting and rolling assembly, comprising a continuous casting system and, if necessary, a roughing mill, is arranged in front of the induction furnace.
  • a gas-fired preheating furnace can be arranged in front of the induction furnace so that it preheats it to a base temperature; however, the fine adjustment is made by a regulated induction furnace.
  • Fig. 1 a composite casting and rolling system 1 for the continuous production of hot strip is shown.
  • a steel melt is cast in a continuous casting plant 2, whereby a continuous strand of a starting material 3 is produced.
  • the raw material is transported uncut by means of a roller table 4 to a roughing train 5, where it is subjected to deformation in the two-stand roughing train.
  • the rolling stock 6 with a thickness of 9 mm then passes through an induction furnace 7 in which it is heated.
  • Five inductors are installed in the induction furnace 7, the reference numerals 8 and 9 each designating an inductor with longitudinal or transverse field heating.
  • FIG. 2 The structure of an inductor with longitudinal field heating 8 is shown in Fig. 2 shown.
  • a conductor 22 is traversed by a current I that changes over time, as a result of which a magnetic field H and a magnetic flux B are essentially in the longitudinal direction of the Rolled stock 10 is initiated.
  • the magnetic field H and the magnetic flux B are represented by arrows.
  • the magnetic field induces a voltage in the rolling stock, as a result of which the rolling stock is heated by the resulting eddy currents.
  • the conductors 22 enclose the rolling stock 10; for the sake of clarity, only 3 windings have been shown, the number of windings being higher in reality.
  • the heated rolling stock 10 is pre-cooled by means of a pre-cooling device 12 with - compared to the subsequent descaling in a rotary descaling device 13 - subjected to low pressure, which initiates cracks in the scale layer of the rolling stock.
  • the rolling stock is then descaled in a rotary descaling device.
  • FIG Fig. 4 Details of the rotary descaling device 13 are shown in FIG Fig. 4 shown.
  • the rolling stock 10 is descaled by 8 rotors 23, each with a vertical axis of rotation, with 4 rotors each being arranged on the top and bottom of the rolling stock 10.
  • Each rotor has 8 full jet nozzles, which intermittently - ie not permanently - act on the rolling stock 10.
  • the water pressure is set between 250 and 420 bar, depending on the thickness of the scale layer.
  • the speed of the rotors is 500 l / min.
  • the temperature profile of the descaled rolling stock 14 is determined by means of a temperature profile measuring device 15, the temperature profile being understood to mean the temperature profile over the width direction of the rolling stock.
  • the surface temperatures of the 1400 mm wide descaled rolling stock 14 are determined at a distance of 100 mm, so that a total of 15 discrete temperature values are available.
  • This temperature profile 19 is transmitted to a control device 18 which, taking into account a target temperature profile 18 and a non-linear control law, determines five manipulated variables 21.
  • the manipulated variables 21 are used to control the inductors 8 and 9 of the induction furnace 7, so that the measured temperature profile 19 matches the set temperature profile 20 as closely as possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • General Induction Heating (AREA)
EP10711199.9A 2009-04-09 2010-03-22 Verfahren und vorrichtung zum aufbereiten von warmwalzgut Active EP2416900B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0056409A AT507663B1 (de) 2009-04-09 2009-04-09 Verfahren und vorrichtung zum aufbereiten von warmwalzgut
PCT/EP2010/053680 WO2010115698A1 (de) 2009-04-09 2010-03-22 Verfahren und vorrichtung zum aufbereiten von warmwalzgut

Publications (3)

Publication Number Publication Date
EP2416900A1 EP2416900A1 (de) 2012-02-15
EP2416900B1 EP2416900B1 (de) 2013-05-01
EP2416900B2 true EP2416900B2 (de) 2021-12-15

Family

ID=42313046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10711199.9A Active EP2416900B2 (de) 2009-04-09 2010-03-22 Verfahren und vorrichtung zum aufbereiten von warmwalzgut

Country Status (8)

Country Link
US (1) US8950227B2 (zh)
EP (1) EP2416900B2 (zh)
KR (1) KR101537539B1 (zh)
CN (1) CN102387874B (zh)
AT (1) AT507663B1 (zh)
BR (1) BRPI1010255A2 (zh)
RU (1) RU2520302C2 (zh)
WO (1) WO2010115698A1 (zh)

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AT507663B1 (de) 2009-04-09 2010-07-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zum aufbereiten von warmwalzgut
IT1404286B1 (it) 2011-01-24 2013-11-15 Danieli Off Mecc Procedimento di laminazione per nastri e relativa linea di laminazione
IT1403833B1 (it) 2011-02-03 2013-10-31 Danieli Off Mecc Procedimento di laminazione per nastri e relativa linea di laminazione
EP2524971A1 (de) * 2011-05-20 2012-11-21 Siemens VAI Metals Technologies GmbH Verfahren und Vorrichtung zum Aufbereiten von Walzgut aus Stahl vor dem Warmwalzen
WO2014135710A1 (de) 2013-03-08 2014-09-12 Sms Siemag Ag VERFAHREN ZUM HERSTELLEN EINES METALLBANDES DURCH GIEßWALZEN
JP5720714B2 (ja) * 2013-03-27 2015-05-20 Ｊｆｅスチール株式会社 厚鋼板の製造方法および製造設備
JP6136544B2 (ja) * 2013-05-02 2017-05-31 新日鐵住金株式会社 仕上圧延前温度算出方法、仕上圧延前温度制御方法、仕上圧延前温度算出装置および仕上圧延前温度制御装置
EP3025799B2 (de) 2014-11-28 2020-04-15 SMS group GmbH Walzanlage
WO2016129040A1 (ja) * 2015-02-09 2016-08-18 東芝三菱電機産業システム株式会社 デスケーリングシステム及びその制御装置及び制御方法
DE102016217560A1 (de) * 2016-03-18 2017-09-21 Sms Group Gmbh Vorrichtung und Verfahren zum Entzundern eines Werkstücks
KR101813902B1 (ko) * 2017-06-08 2018-01-02 주식회사안그라픽스 동영상 템플릿의 조합 시스템 및 그 방법
CN110038908B (zh) * 2018-01-16 2022-09-16 上海金艺检测技术有限公司 热轧除鳞泵增速箱在线监测诊断方法
CN108580824B (zh) * 2018-03-30 2020-11-06 中冶华天工程技术有限公司 轴承钢棒材连铸系统及工艺
AT522345B1 (de) * 2019-03-29 2020-11-15 Primetals Technologies Austria GmbH Heizungsvorrichtung zum induktiven Erhitzen eines Flachstahlstreifens in einem Warmwalzwerk
EP3791971A1 (de) * 2019-09-10 2021-03-17 Primetals Technologies Austria GmbH Kaltwalzen eines walzguts in einer walzstrasse mit mehreren walzgerüsten
CN111760912A (zh) * 2020-07-14 2020-10-13 中冶赛迪工程技术股份有限公司 热轧带钢无头轧制中间坯连接方法及系统
DE102020124517A1 (de) * 2020-09-21 2022-03-24 Volkswagen Aktiengesellschaft Verfahren und Einrichtung zur Trocknung eines Folienmaterials
CN112718882A (zh) * 2020-12-11 2021-04-30 上海华峰铝业股份有限公司 一种用于冷轧机测温的无线测温系统及测温方法
CN113210422B (zh) * 2021-04-19 2022-06-14 福州大学 一种铝带冷轧机工作辊边部感应加热辊温预测方法
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系统及方法
CN113319130B (zh) * 2021-06-29 2022-03-15 燕山大学 连轧板材温度控制方法及装置
CN114850229B (zh) * 2022-05-06 2023-10-03 新余钢铁股份有限公司 一种线差测量系统

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AT507663B1 (de) 2009-04-09 2010-07-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zum aufbereiten von warmwalzgut

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10230313A (ja) † 1997-02-21 1998-09-02 Nkk Corp 熱延鋼帯の圧延方法
JP2004136291A (ja) † 2002-10-15 2004-05-13 Nippon Steel Corp 熱間圧延ラインにおけるストリップの温度制御装置、方法、コンピュータプログラム、及びコンピュータ読み取り可能な記憶媒体

Also Published As

Publication number Publication date
BRPI1010255A2 (pt) 2016-03-22
RU2011145316A (ru) 2013-05-20
WO2010115698A1 (de) 2010-10-14
EP2416900A1 (de) 2012-02-15
EP2416900B1 (de) 2013-05-01
CN102387874B (zh) 2014-12-10
AT507663A4 (de) 2010-07-15
KR101537539B1 (ko) 2015-07-17
KR20120004515A (ko) 2012-01-12
RU2520302C2 (ru) 2014-06-20
US8950227B2 (en) 2015-02-10
US20120067095A1 (en) 2012-03-22
CN102387874A (zh) 2012-03-21
AT507663B1 (de) 2010-07-15

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