EP2303482B1 - Méthode de changement de cylindre dans un laminoir pour une bande d'acier en défilement continu - Google Patents

Méthode de changement de cylindre dans un laminoir pour une bande d'acier en défilement continu Download PDF

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Publication number
EP2303482B1
EP2303482B1 EP08874694.6A EP08874694A EP2303482B1 EP 2303482 B1 EP2303482 B1 EP 2303482B1 EP 08874694 A EP08874694 A EP 08874694A EP 2303482 B1 EP2303482 B1 EP 2303482B1
Authority
EP
European Patent Office
Prior art keywords
stand
cage
dedicated
rolling
roller
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.)
Revoked
Application number
EP08874694.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2303482A1 (fr
Inventor
Vincent Cronier
Bernard Rossigneux
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.)
Clecim SAS
Original Assignee
Siemens VAI Metals Technologies SAS
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
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Application filed by Siemens VAI Metals Technologies SAS filed Critical Siemens VAI Metals Technologies SAS
Publication of EP2303482A1 publication Critical patent/EP2303482A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B2013/003—Inactive rolling stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/14—Reduction rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2271/00—Mill stand parameters
    • B21B2271/02—Roll gap, screw-down position, draft position
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y10T29/49721—Repairing with disassembling
    • Y10T29/4973—Replacing of defective part

Definitions

  • the present invention relates to a method of changing a roll in a cold rolling mill for a continuous-running steel strip according to the preamble of claim 1, see for example JP-A62275515 .
  • the invention relates to the technical field of cold rolling steel strips on a continuous tandem type rolling mill, requiring changes in the rolling rolls.
  • the permanent contact of the working rolls with the rolled strip and with the support or intermediate rolls causes a deterioration of their surface state requiring their change as soon as this surface condition, particularly on the last stand of rolling downstream of the rolling mill (output rolling mill), no longer achieves the required surface quality of the rolled strip.
  • the drop in productivity due to cylinder changes is particularly important for rolling mill stands equipped with very small cylinders whose work hardening and surface wear are very fast, for example multi-cylinder cages used for rolling stainless steels.
  • the rolling scheme that is to say for a given product and a target output thickness (involving the reduction rate in each cage, the rotational speed of the cylinders in each cage, the traction between each cage ) must be modified for six cages twelve times throughout the change procedure in order to distribute on each of the cages upstream and downstream of the change site a portion of the unrealized thickness reduction in the cage being changed.
  • An object of the present invention is to provide a method of changing a roll (s) of a rolling stand adapted to support at least one working roll for a continuous strip steel strip rolling mill, said method for solving the aforementioned problems.
  • a solution is proposed by a method through claim 1.
  • the rolling mill comprises a number of cages one of which is permanently in free tightening function (said dedicated cage).
  • the dedicated cage according to the invention is to replace the cage for which at least one cylinder must be changed.
  • the time sequence of increasing and then decreasing the cage clamps according to the transferred / redistributed setpoint values can therefore be greatly simplified and reduced, which makes the strip thickness at the outlet of the rolling mill better controllable within the required tolerances, as well as guarantees an excellent upgrade.
  • the invention allows a change of cylinders free of any break tape.
  • the productivity of the mill remains at a maximum, as in the non-change cylinder phase.
  • a set of subclaims also has advantages of the invention according to different aspects or embodiments.
  • the strip B is constantly rolled by passing through N-1 rolling mills on a total number of N cages that includes the rolling mill, any one of the mill stands being in the process of cylinder change (and thus designated by the cage C) is in the waiting position of a new change operation (and thus designated by the cage CA or C).
  • the method under a first embodiment has two variants, respectively represented by the FIGS. 1a, 1b and 2a, 2b .
  • the last set value R5 on the fifth cylinder C5 allows the strip to have a thickness E at the output of the rolling mill.
  • the method can therefore be applied without temporal limitation, if desired, simply by reassigning the waiting function (free rolling) of the dedicated cage on one of the cages where it has occurred. a change of cylinder, thus waiting for a next cage change.
  • the last set value R5 on the sixth cylinder C6 allows the strip to have a thickness E at the output of the rolling mill.
  • the first and the second cage C1, C2 retain their clamping position below their respective setpoints R1, R2.
  • it is then also possible to assign to this fifth cage the waiting function of the dedicated cage CA C3 (now active rolling function), until a change of another cylinder / cage C must intervene.
  • the method can therefore be applied without time limit, if desired, simply by reassigning the waiting function (rolling free) of the dedicated cage to one of the cages where a change of cylinder has taken place, thus waiting for a next cage change.
  • Figure 3a, 3b and 3c describe a second embodiment of the invention.
  • the cage CA is dedicated to allow a change of cylinders of all other cages located upstream. It is only put into service when any roll stand is in the process of changing rolls and only for the duration of this change. Except for cylinder change operations, this dedicated cage is in the waiting position (free of rolling function).
  • this dedicated cage CA is placed downstream of the last active rolling stand which is the one whose cylinders are most often changed.
  • the figure 3c so is a classic return to the figure 3a .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
EP08874694.6A 2008-06-19 2008-06-19 Méthode de changement de cylindre dans un laminoir pour une bande d'acier en défilement continu Revoked EP2303482B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR2008/000857 WO2009153415A1 (fr) 2008-06-19 2008-06-19 Méthode de changement de cylindre dans un laminoir pour une bande d'acier en défilement continu

Publications (2)

Publication Number Publication Date
EP2303482A1 EP2303482A1 (fr) 2011-04-06
EP2303482B1 true EP2303482B1 (fr) 2014-08-06

Family

ID=40263396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08874694.6A Revoked EP2303482B1 (fr) 2008-06-19 2008-06-19 Méthode de changement de cylindre dans un laminoir pour une bande d'acier en défilement continu

Country Status (8)

Country Link
US (1) US8479366B2 (ja)
EP (1) EP2303482B1 (ja)
JP (1) JP5474059B2 (ja)
KR (1) KR101460841B1 (ja)
CN (1) CN102066015B (ja)
BR (1) BRPI0822799A2 (ja)
RU (1) RU2472597C2 (ja)
WO (1) WO2009153415A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2777832A1 (fr) 2013-03-13 2014-09-17 Siemens VAI Metals Technologies GmbH Dispositif de mise en rotation de cylindres de travail d'un laminoir et méthode de changement des dits cylindres
DE102015218360A1 (de) * 2015-09-24 2017-03-30 Sms Group Gmbh Walzgerüst und Verfahren zum Wechseln von Arbeitswalzen
EP3208673B1 (de) 2016-02-22 2019-06-05 Primetals Technologies Austria GmbH Inline-kalibrierung des walzspalts eines walzgerüsts
FR3050128B1 (fr) 2016-04-18 2018-09-07 Fives Dms Procede de changement des cylindres d'un laminoir
CN105945071A (zh) * 2016-06-24 2016-09-21 燕山大学 一种esp无头轧制中精轧机组在线换辊设备及方法
CN112380634B (zh) * 2019-07-29 2024-03-01 上海梅山钢铁股份有限公司 一种适应于热轧老轧机提高精轧工作辊有效工作层的方法
CN114985474B (zh) * 2022-05-06 2023-04-18 燕山大学 一种ds轧机机组动态错位变规程在线换辊的工艺方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3913368A (en) * 1974-09-04 1975-10-21 Blaw Knox Foundry Mill Machine Tandem rolling mill
SU995944A1 (ru) * 1981-07-14 1983-02-15 Центральное Проектно-Конструкторское Бюро По Системам Автоматизации Производства "Союзпромавтоматика" Минприбора Устройство дл автоматизированной замены клетей при бесконечной прокатке полосы
JPS5933014A (ja) * 1982-08-18 1984-02-22 Kawasaki Steel Corp 完全連続タンデムミルのロ−ル交換方法
JPS62101309A (ja) 1985-10-29 1987-05-11 Ishikawajima Harima Heavy Ind Co Ltd ロ−ルシフト方法
JPS62101307A (ja) * 1985-10-29 1987-05-11 Ishikawajima Harima Heavy Ind Co Ltd ロ−ル組替方法
JPS62275515A (ja) 1986-05-22 1987-11-30 Nippon Steel Corp 連続圧延制御方法
DE4104001A1 (de) * 1991-02-09 1992-08-13 Schloemann Siemag Ag Verfahren und anlage zum auswalzen von durch stranggiessen hergestellten vorbaendern bzw. duennbrammen
RU2006304C1 (ru) * 1992-04-20 1994-01-30 Производственное Объединение "Электростальтяжмаш" Способ перевалки рабочих валков клетей линейного прокатного стана и рабочая линия для его осуществления
DE10138589A1 (de) 2001-08-06 2003-02-20 Sms Demag Ag Vorrichtung und Arbeitsverfahren zum automatischen Wechseln der Arbeits, Stütz- und Zwischenwalzen eines ein- oder mehrgerüstigen Bandwalzwerkes

Also Published As

Publication number Publication date
JP2011524810A (ja) 2011-09-08
RU2472597C2 (ru) 2013-01-20
KR20110025916A (ko) 2011-03-14
JP5474059B2 (ja) 2014-04-16
CN102066015B (zh) 2014-10-08
KR101460841B1 (ko) 2014-11-11
US20110099783A1 (en) 2011-05-05
US8479366B2 (en) 2013-07-09
RU2011101722A (ru) 2012-07-27
BRPI0822799A2 (pt) 2015-06-30
EP2303482A1 (fr) 2011-04-06
WO2009153415A1 (fr) 2009-12-23
CN102066015A (zh) 2011-05-18

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