EP1192014A1 - Procede et dispositif pour laminer un feuillard d'epaisseur variable - Google Patents

Procede et dispositif pour laminer un feuillard d'epaisseur variable

Info

Publication number
EP1192014A1
EP1192014A1 EP00947823A EP00947823A EP1192014A1 EP 1192014 A1 EP1192014 A1 EP 1192014A1 EP 00947823 A EP00947823 A EP 00947823A EP 00947823 A EP00947823 A EP 00947823A EP 1192014 A1 EP1192014 A1 EP 1192014A1
Authority
EP
European Patent Office
Prior art keywords
rolling
wedge
shaped
metal strip
stand
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.)
Granted
Application number
EP00947823A
Other languages
German (de)
English (en)
Other versions
EP1192014B1 (fr
Inventor
Ulrich Lettau
Dietrich Wohld
Wilfried Tautz
Siegbert Steidl
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP1192014A1 publication Critical patent/EP1192014A1/fr
Application granted granted Critical
Publication of EP1192014B1 publication Critical patent/EP1192014B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/24—Automatic variation of thickness according to a predetermined program
    • B21B37/26—Automatic variation of thickness according to a predetermined program for obtaining one strip having successive lengths of different constant thickness
    • 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
    • Y10T29/30—Foil or other thin sheet-metal making or treating
    • 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
    • Y10T29/30—Foil or other thin sheet-metal making or treating
    • Y10T29/301—Method
    • 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
    • Y10T29/30—Foil or other thin sheet-metal making or treating
    • Y10T29/301—Method
    • Y10T29/302—Clad or other composite foil or thin metal making

Definitions

  • the invention relates to a method and a device for rolling a metal strip in a rolling mill, the rolling mill having at least two rolling stands, the metal strip having at least two partial regions of different thickness, which are connected to one another via a wedge-shaped or approximately wedge-shaped transition piece, and wherein the Rolling speed of a rolling stand during the rolling of the wedge-shaped or approximately wedge-shaped transition piece as a function of the advance of the rolling stand, especially according to DE-OS 197 49 424, is set.
  • DE-OS 197 49 424 teaches a method for reducing rejects during hot rolling of corresponding rolled strips. It is an object of the invention to further improve the quality of the rolled stock in such a procedure.
  • the object is achieved according to the invention by a method according to claim 1 or a device for rolling a metal strip in a rolling train according to claim 2, wherein for rolling a metal strip in a rolling train the rolling train has at least two rolling stands, the metal strip having at least two partial areas of different Has thickness, which are connected via a wedge-shaped or approximately wedge-shaped transition piece, and wherein the
  • Rolling speed of a rolling stand during rolling of the wedge-shaped or approximately wedge-shaped transition piece in Dependence of the advance of the rolling stand and the temperature of the metal strip is set.
  • FIG. 4 target rolling speed profiles taking into account the advance of the rolling stand and the temperature of the metal strip
  • FIG. 5 alternative profiles for additional values of the target speed.
  • the metal strip 1 shows a metal strip 1 of variable thickness as a result of a change in the pass schedule during rolling.
  • the metal strip 1 has an area 4 with the greater thickness, which corresponds to the thickness according to the old pass schedule, and an area 3 of reduced thickness, which corresponds to the thickness according to the new pass schedule.
  • the metal strip 1 has a wedge-shaped intermediate piece 2 between the two areas 3 and 4.
  • the change in pass schedule generally changes the decreases and outlet thicknesses of all rolling stands. Therefore e.g. According to DE-OS 197 49 424, the rolling stands were switched from the old to the new pass schedule at the right time.
  • An adjustment of the target rolling speed m analogy to the procedure according to
  • DE-OS 197 49 424 shows FIG 2 for a three-step rolling mill.
  • the target values of the rolling speeds v are shown over time t.
  • Vll denotes the rolling speed of the first stand, v21 the rolling speed of the second rolling stand and v31 the rolling speed of the third rolling stand.
  • 3 shows an additional value ⁇ v L of the desired rolling speed m as a function of time t.
  • the scale of the speed is shown larger compared to FIG. 2 and FIG.
  • the additional value ⁇ v L for the desired rolling speed is set in such a way that the temperature of the rolled strip corresponds as precisely as possible to a desired target temperature.
  • the desired speeds compared to FIG. 2 are changed by the additional value ⁇ v L.
  • the result is shown in FIG. 4.
  • vl2 denotes the target rolling speed of the first stand, v22 the target rolling speed of the second stand and v32 the target rolling speed of the third stand.
  • FIG. 5 shows further possible courses 5, 6, 7, 8 of the additional value ⁇ v.
  • the choice of a suitable course 4, 5, 6, 7, 8 for the value ⁇ v L depends on how the desired temperature of the metal strip is set in a suitable manner.
  • boundary or ancillary conditions such as load limits of the roller drives, can be taken into account.

Landscapes

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

Abstract

L'invention concerne un procédé et un dispositif pour laminer un feuillard (1) dans un train de laminoir qui présente au moins deux cages de laminoir. Ce feuillard (1) présente au moins deux zones partielles (3, 4) de différente épaisseur, qui sont reliées entre elles par un élément de jonction (2) cunéiforme ou approximativement cunéiforme. La vitesse de laminage d'une cage de laminoir, lors du laminage de l'élément de jonction (2) cunéiforme ou approximativement cunéiforme, est réglée en fonction de l'avance de la cage de laminoir et de la température du feuillard.
EP00947823A 1999-07-01 2000-06-26 Procede et dispositif pour laminer un feuillard d'epaisseur variable Expired - Lifetime EP1192014B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19930472A DE19930472A1 (de) 1999-07-01 1999-07-01 Verfahren und Einrichtung zum Walzen eines Walzbandes mit variierender Dicke
DE19930472 1999-07-01
PCT/DE2000/002073 WO2001002109A1 (fr) 1999-07-01 2000-06-26 Procede et dispositif pour laminer un feuillard d'epaisseur variable

Publications (2)

Publication Number Publication Date
EP1192014A1 true EP1192014A1 (fr) 2002-04-03
EP1192014B1 EP1192014B1 (fr) 2003-09-10

Family

ID=7913378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00947823A Expired - Lifetime EP1192014B1 (fr) 1999-07-01 2000-06-26 Procede et dispositif pour laminer un feuillard d'epaisseur variable

Country Status (6)

Country Link
US (1) US6922878B1 (fr)
EP (1) EP1192014B1 (fr)
AT (1) ATE249290T1 (fr)
DE (2) DE19930472A1 (fr)
RU (1) RU2246998C2 (fr)
WO (1) WO2001002109A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104338748B (zh) * 2013-07-24 2016-04-27 宝山钢铁股份有限公司 一种用于变厚度带材轧制的两道次轧制方法
CN108284130A (zh) * 2017-01-09 2018-07-17 宝山钢铁股份有限公司 一种冷轧变厚度板材的轧制方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56114513A (en) * 1980-02-16 1981-09-09 Nippon Steel Corp Changing method for thickness of strip during hot rolling work
JPS58135711A (ja) * 1982-02-05 1983-08-12 Toshiba Corp 連続圧延機の制御方法およびその制御装置
JPS5982102A (ja) * 1982-10-30 1984-05-12 Toshiba Corp 圧延方法
DE19522494C2 (de) * 1994-07-07 1997-06-19 Siemens Ag Verfahren zum Walzen eines Metallbandes
JPH10249427A (ja) * 1997-03-13 1998-09-22 Sumitomo Metal Ind Ltd 熱間連続圧延方法
EP1035928A1 (fr) * 1997-11-07 2000-09-20 Siemens Aktiengesellschaft Procede et dispositif permettant de laminer une bande d'epaisseur variable

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0102109A1 *

Also Published As

Publication number Publication date
US6922878B1 (en) 2005-08-02
RU2246998C2 (ru) 2005-02-27
ATE249290T1 (de) 2003-09-15
EP1192014B1 (fr) 2003-09-10
DE19930472A1 (de) 2001-01-11
DE50003659D1 (de) 2003-10-16
WO2001002109A1 (fr) 2001-01-11

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