EP1414596A2 - Installation de laminage a chaud - Google Patents

Installation de laminage a chaud

Info

Publication number
EP1414596A2
EP1414596A2 EP02794551A EP02794551A EP1414596A2 EP 1414596 A2 EP1414596 A2 EP 1414596A2 EP 02794551 A EP02794551 A EP 02794551A EP 02794551 A EP02794551 A EP 02794551A EP 1414596 A2 EP1414596 A2 EP 1414596A2
Authority
EP
European Patent Office
Prior art keywords
rolling
stand
strip
rolled
hot
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
EP02794551A
Other languages
German (de)
English (en)
Other versions
EP1414596B1 (fr
Inventor
Dieter Rosenthal
Peter Sudau
Joachim Hafer
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.)
SMS Siemag AG
Original Assignee
SMS Demag AG
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 SMS Demag AG filed Critical SMS Demag AG
Publication of EP1414596A2 publication Critical patent/EP1414596A2/fr
Application granted granted Critical
Publication of EP1414596B1 publication Critical patent/EP1414596B1/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
    • 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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • 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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • B21B1/466—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 metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
    • 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
    • B21B1/26—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 by hot-rolling, e.g. Steckel hot mill
    • 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
    • B21B2201/00—Special rolling modes
    • B21B2201/02—Austenitic rolling
    • 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
    • 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
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y10T29/49991—Combined with rolling

Definitions

  • the invention relates to a hot rolling system for rolling thin hot strip for a wide range of differently difficult to deform material and a method for operating such a hot rolling system.
  • Seven-stand hot strip mills are known, which are arranged after continuous casting devices and equalizing furnaces.
  • hot rolling systems of this type hot strips of material of different hardness can be rolled with thicknesses of 1.5 to 1.2 mm, the strip still having an austenitic structure at the exit of the last rolling stand.
  • the belt speed at the exit of the last rolling stand is also simple with units that follow the hot rolling system, such as. B. a pair of scissors and reels manageable.
  • the mean temperature of the strip at the exit of the last stand of the hot strip mill should not fall below the temperature required for austenitic rolling (approx. 860 ° C)
  • the speed at the exit of the last stand of the hot strip finishing train should be approx 12.5 m / sec. do not exceed, since the hot strip can otherwise no longer be guided properly on the outfeed roller table and then reeled.
  • reels that are used for winding at speeds of over 15 m / sec. must be accelerated very complex, expensive and difficult to control.
  • the seven-stand hot strip mill can also achieve thicknesses smaller than 1.2 mm, since the large rolling work means that the austenitic structure behind the last rolling stand is still encountered even at lower speeds.
  • the hot rolling mill is not suitable for easily formable material with small final thicknesses.
  • the drive elements of the hot rolling mill are subjected to greater stress at higher speeds and wear out faster, so that complex drive components, reels and scissors and considerably more precise and dynamic control mechanisms have to be provided in order to guarantee the desired strip quality.
  • the invention has for its object to provide a hot rolling mill and a method for operating the hot rolling mill so that after the rolling process with starting thicknesses below 1.2 mm, in particular below 1 mm, even when rolling easily formable materials, strip temperatures are still present which are austenitic rolling guarantee and still the exit speed of the rolling stock a speed of 15 m / sec. does not exceed, so that there are more manageable work processes Wear of the system is reduced and the costs can also be kept low with simply constructed units.
  • a hot rolling mill with the features of claim 1 is proposed.
  • hot strips of various degrees of deformability can be rolled easily to thicknesses of approx. 1.2 mm.
  • rolled strip thicknesses of less than 1.2 mm, in particular less than 1 mm can also be rolled at a reasonable cost by combining the features according to the invention for materials of varying difficulty.
  • the invention is explained in more detail with reference to a drawing.
  • the drawing shows a hot rolling mill that can be operated for differently difficult to form material in such a way that, regardless of the material used and despite the resulting different conditions for all materials, final rolling temperatures occur on the last stand, which guarantees austenitic rolling and speeds less than approx 15m / sec. can be achieved.
  • the hot rolling plant consists of a thin slab casting plant 1, the strand guidance of which can be regulated in such a way that thin slab thicknesses of approximately 45 to 70 mm are achieved at the outlet of the thin slab casting plant 1.
  • the continuously cast thin slabs can be divided by scissors 2. Slab lengths can be set that correspond to the length of a finished rolled coil or a multiple thereof.
  • the cut slabs are kept in a roller hearth furnace 3, which is used for temperature compensation, for example at a temperature of 1150 ° C.
  • the roller hearth furnace 3 is followed by scissors 4, which are only used in the event of an accident.
  • a scale washer 5 Behind the roller hearth furnace 3 is a scale washer 5, which is followed by a seven-stand rolling mill 7 with the rolling sizes F1 to F7.
  • a cooling section 8 At the exit of the rolling mill 7, a cooling section 8 is provided, which extends in the direction of the strip device a flying shear 9 connects, which is used in the case of semi-endless or endless rolling.
  • the hot rolling system ends with two reels 10, which can alternatively be designed as a rotor reel.
  • An intermediate stand ignition device 6 is arranged between the roll stand F1 and the roll stand F2.
  • the thin slab caster 1 is set so that, depending on the desired final thickness and casting machine production, slabs with thicknesses between 45 and 70 mm, preferably 55 mm, are used. All seven stands F1 to F7 are started.
  • the interframe descaling device 6 is inactive. In this mode of operation, the high rolling forces and the large amount of work that is to be rolled into the difficult-to-form material to be rolled allow strip thicknesses at the outlet of the rolling stand F7 to be less than 1 mm, the speed of which is approx. is not exceeded and there is still rolled strip with an austenitic structure.
  • the thin slab caster 1 When rolling easily formable material with final thicknesses below 1 mm, the thin slab caster 1 must be set to thin slab thicknesses between 45 and 50 mm.
  • the rolling stand F1 is either inactive or is used for a smoothing pass with a small decrease.
  • the smoothing stitch causes the slab surface to become smoother, so that a more uniform scale layer can build up behind the scale washer 5.
  • the active intermediate scaffold scaling device 6 can thus more easily remove the newly formed scale. This means that less descaling agent is applied to the slabs than if the framework F1 were not used for the smoothing stitch.
  • the stands F2 to F7 are usually set slightly stronger than in the driving style in which all seven stands are set. By operating the stands F2 to F7 only, lower end roller speeds are achieved. Due to the smaller inlet slab thickness and the stronger adjustment of the stands F2 to F7, final rolling thicknesses of less than 1 mm are nevertheless achieved, the rolled material having temperatures in the austenitic microstructure.
  • both difficult-to-form and easily formable materials can be rolled down to thicknesses of less than 1 mm in the austenitic range without the output speed on the F7 roll stand being 15 m / sec. exceeds.
  • the entire process can thus be designed in a simple manner, and the units of the hot rolling system, such as scissors and coiler, retain their simple, inexpensive construction. An increased effort is not necessary.

Abstract

L'objectif de cette invention est de concevoir et de faire fonctionner une installation de laminage à chaud, de sorte que des bandes de matériau, présentant différentes difficultés de déformation, peuvent être laminées de manière présenter des épaisseurs inférieures à 1 mm, des vitesses de bande de 15 m/sec à la sortie de la dernière cage de laminoir ne devant pas être dépassées, quel que soit le matériau utilisé, et la bande laminée devant présenter une structure austénitique. A cet effet, on utilise des épaisseurs de bramme mince d'environ 50 mm pour le laminage d'un matériau facilement déformable. La première cage sur sept est entraînée ou exécute seulement une passe de lissage. La bramme est décapée en amont ou en aval de la première cage puis les deuxième à septième cages effectuent la réduction d'épaisseur jusqu'à l'obtention d'épaisseurs inférieures à 1 mm.
EP02794551A 2001-08-07 2002-08-05 Installation de laminage a chaud Expired - Lifetime EP1414596B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10137944A DE10137944A1 (de) 2001-08-07 2001-08-07 Warmwalzanlage
DE10137944 2001-08-07
PCT/EP2002/008715 WO2003013750A2 (fr) 2001-08-07 2002-08-05 Installation de laminage a chaud

Publications (2)

Publication Number Publication Date
EP1414596A2 true EP1414596A2 (fr) 2004-05-06
EP1414596B1 EP1414596B1 (fr) 2005-01-26

Family

ID=7694158

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02794551A Expired - Lifetime EP1414596B1 (fr) 2001-08-07 2002-08-05 Installation de laminage a chaud

Country Status (18)

Country Link
US (1) US7213432B2 (fr)
EP (1) EP1414596B1 (fr)
JP (1) JP4455878B2 (fr)
KR (1) KR100853666B1 (fr)
CN (1) CN1250350C (fr)
AT (1) ATE287769T1 (fr)
AU (1) AU2002355347B2 (fr)
BR (1) BR0211496A (fr)
CA (1) CA2456933C (fr)
DE (2) DE10137944A1 (fr)
ES (1) ES2232785T3 (fr)
HU (1) HU224681B1 (fr)
MX (1) MXPA04001161A (fr)
PL (1) PL201660B1 (fr)
RU (1) RU2297889C2 (fr)
UA (1) UA77964C2 (fr)
WO (1) WO2003013750A2 (fr)
ZA (1) ZA200400396B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10325955A1 (de) * 2003-06-07 2004-12-23 Sms Demag Ag Verfahren und Anlage zum Erzeugen von Stahlprodukten mit bester Oberflächenqualität
DE102007022931A1 (de) * 2006-05-26 2007-11-29 Sms Demag Ag Verfahren und Vorrichtung zum Herstellen eines Metallbandes durch Stranggießen
CN101181718B (zh) * 2007-12-11 2010-06-02 武汉钢铁(集团)公司 薄板坯连铸连轧生产宽带钢的方法及其系统
IT1400002B1 (it) * 2010-05-10 2013-05-09 Danieli Off Mecc Procedimento ed impianto per la produzione di prodotti laminati piani
RU2466806C1 (ru) * 2011-06-24 2012-11-20 Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения имени академика Целикова" (ОАО АХК "ВНИИМЕТМАШ") Способ производства листовой горячекатаной продукции из алюминия и его сплавов
DE102013220657A1 (de) 2013-07-26 2015-01-29 Sms Siemag Ag Verfahren und Vorrichtung zur Herstellung eines metallischen Bandes im kontinuierlichen Gießwalzverfahren
DE102014204073A1 (de) * 2014-03-06 2015-09-10 Robert Bosch Gmbh Endkonturnahes Warmwalzen von Führungsschienen
CN111842484B (zh) * 2020-07-23 2021-07-27 东北大学 一种基于两轧辊交替工作的连铸板坯热芯轧制方法
DE102022208498A1 (de) 2022-08-16 2024-02-22 Sms Group Gmbh Verfahren zum Herstellen metallischer Bänder durch Gießwalzen

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US870553A (en) * 1907-04-01 1907-11-12 Eduard Eulenstein Copying-press.
US885974A (en) * 1907-06-19 1908-04-28 Pietro Boggio Swinging-window catch.
US4402402A (en) * 1981-10-14 1983-09-06 Pike Brian R Barrier seal multiple-compartment package
JPH0763751B2 (ja) * 1987-01-24 1995-07-12 株式会社日立製作所 熱間圧延ライン
DE4402402B4 (de) * 1994-01-27 2004-05-13 Sms Demag Ag Verfahren zur Herstellung von warmgewalztem Stahlband aus stranggegossenem Vormaterial und Anlage zur Durchführung des Verfahrens
DE19529049C1 (de) * 1995-07-31 1997-03-20 Mannesmann Ag Hochgeschwindigkeits-Dünnbrammenanlage
EP0761326B1 (fr) * 1995-09-06 2000-02-09 Sms Schloemann-Siemag Aktiengesellschaft Installation pour la production d'une bande mince laminée à chaud
DE19540978A1 (de) * 1995-11-03 1997-05-07 Schloemann Siemag Ag Produktionsanlage zum kontinuierlichen- oder diskontinuierlichen Auswalzen von Warmband
DE19649295A1 (de) * 1996-11-28 1998-06-04 Schloemann Siemag Ag Warmwalzanlage
IT1290743B1 (it) * 1997-04-10 1998-12-10 Danieli Off Mecc Procedimento di laminazione per prodotti piani con spessori sottili e relativa linea di laminazione
DE19725434C2 (de) 1997-06-16 1999-08-19 Schloemann Siemag Ag Verfahren zum Walzen von Warmbreitband in einer CSP-Anlage
DE19750817C2 (de) * 1997-11-17 2003-03-20 Sms Demag Ag Verfahren zur Verbesserung der Oberflächenqualität einer stranggegossenen Bramme
DE19817034A1 (de) * 1998-04-17 1999-10-21 Schloemann Siemag Ag Verfahren und Vorrichtung zum Stranggießen von dünnen Metallbändern
DE10062868A1 (de) * 2000-12-16 2002-06-20 Sms Demag Ag Verfahren zum Giessen und unmittelbar anschliessendem Walzen und eine Vorrichtung zur Stützung, Führung und Verformung eines Metall-, insbesondere eines Stahlstranges

Non-Patent Citations (1)

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Title
See references of WO03013750A2 *

Also Published As

Publication number Publication date
UA77964C2 (en) 2007-02-15
HUP0401143A2 (en) 2004-09-28
MXPA04001161A (es) 2004-07-08
PL365390A1 (en) 2005-01-10
DE50202130D1 (de) 2005-03-03
RU2297889C2 (ru) 2007-04-27
CN1538884A (zh) 2004-10-20
ZA200400396B (en) 2004-08-23
BR0211496A (pt) 2004-08-17
JP2004537418A (ja) 2004-12-16
EP1414596B1 (fr) 2005-01-26
WO2003013750A3 (fr) 2003-09-25
RU2004106612A (ru) 2005-03-27
CA2456933C (fr) 2009-11-10
JP4455878B2 (ja) 2010-04-21
DE10137944A1 (de) 2003-02-20
KR100853666B1 (ko) 2008-08-25
PL201660B1 (pl) 2009-04-30
US20040232605A1 (en) 2004-11-25
US7213432B2 (en) 2007-05-08
ATE287769T1 (de) 2005-02-15
CA2456933A1 (fr) 2003-02-20
AU2002355347B2 (en) 2007-06-21
ES2232785T3 (es) 2005-06-01
WO2003013750A2 (fr) 2003-02-20
CN1250350C (zh) 2006-04-12
KR20040015384A (ko) 2004-02-18
HU224681B1 (hu) 2005-12-28

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