EP2376240A1 - Procédé de production de bandes métalliques et installation de production pour la mise en oeuvre du procédé - Google Patents

Procédé de production de bandes métalliques et installation de production pour la mise en oeuvre du procédé

Info

Publication number
EP2376240A1
EP2376240A1 EP09771720A EP09771720A EP2376240A1 EP 2376240 A1 EP2376240 A1 EP 2376240A1 EP 09771720 A EP09771720 A EP 09771720A EP 09771720 A EP09771720 A EP 09771720A EP 2376240 A1 EP2376240 A1 EP 2376240A1
Authority
EP
European Patent Office
Prior art keywords
temperature
strip
hot
casting
homogenization
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
EP09771720A
Other languages
German (de)
English (en)
Other versions
EP2376240B1 (fr
Inventor
Rolf Franz
Karl-Heinz Spitzer
Hellfried Eichholz
Markus SCHÄPERKÖTTER
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 Siemag 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
Priority claimed from DE102008061206A external-priority patent/DE102008061206A1/de
Priority claimed from DE102009032358A external-priority patent/DE102009032358A1/de
Application filed by SMS Siemag AG filed Critical SMS Siemag AG
Publication of EP2376240A1 publication Critical patent/EP2376240A1/fr
Application granted granted Critical
Publication of EP2376240B1 publication Critical patent/EP2376240B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B21B1/22—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
    • 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
    • B21B1/463—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 continuous process, i.e. the cast not being cut before rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material

Definitions

  • the invention relates to a method for the continuous and discontinuous production of hot-rolled strips of cast metal, in particular steel, with the features of the preamble of claim 1. Furthermore, the invention relates to a production plant for carrying out the method according to the features of the preamble of claim 9.
  • EP 1 047 510 B1 discloses a production method for producing hot rolled thin flat products. Thereafter, in a horizontal strip casting plant, molten steel is poured close to the final dimensions in a range of 5 mm to 18 mm strip thickness and cooled under the protective gas atmosphere before it reaches the monolithic roughing line.
  • the pre-rolled hot-rolled strip is optionally cooled, heated or kept to temperature in a facility downstream of the roughing train and the edges of the hot-rolled strip are reheated.
  • the single-storey roughing road is followed by a multistorey finishing train, a discharge roller table with a device for cooling the hot strip and upstream and downstream winding machines for winding up the hot strip.
  • the roller temperature in front of the multi-stand finishing train can be selectively adjusted by the arranged behind the roughing device for cooling, heating or holding the temperature of the hot strip either austenite or ferrite or in the transition region from austenite to ferrite.
  • the document WO 2006/066551 A1 furthermore discloses a method for producing hot strips of lightweight steel, which in particular is readily cold-drawable and which has Fe, Mn 1 Si and Al as the main elements.
  • the pre-band produced by tape casting first passes through a device under protective gas for homogenization in connection with optionally holding the temperature, cooling or heating. Thereafter, the pre-strip is subjected to at least one pass hot rolling process with a Rescueumformungsgrad of at least 50%. After the last stitch, the hot strip is cooled and rewound. Depending on the ratio of casting to rolling speed, the hot rolling process takes place inline or decoupled.
  • the homogenization zone is intended to effect temperature equalization across the hot strip area and stress relief within the hot strip, regardless of whether the temperature level is maintained, increased or decreased.
  • the casting process there is a direct connection between the material in the liquid phase in the area of the melt application and the further process steps of the solidified material via the casting belt.
  • the casting belt is fed via a transport line for further processing.
  • the further process steps can be: straightening, rolling, cutting and winding (reeling, coiling).
  • This and other components of a casting plant can lead to tensile and mass flow fluctuations in the casting belt. If these disturbances continue in the direction of the liquid steel, this can lead to casting defects and negative influence on the casting belt, such as thickness variations, overflows, edge lacing and belt or stall separation.
  • the pre-strip produced by tape casting for homogenizing the microstructure undergoes a first homogenization zone under inert gas atmosphere in conjunction with optionally holding the temperature of the pre-strip, reducing the temperature or raising the temperature, driver, looper , Driver error.
  • the pre-band passes through a temperature setting device in order to optionally maintain the temperature of the pre-strip, to reduce the temperature of the pre-strip or to raise the temperature of the pre-strip.
  • the preliminary strip is subjected to a reduction in thickness of less than 49% in an at least one pass hot rolling process.
  • the pre-strip passes through a second homogenization zone before being separated as a hot strip from the incoming pre-strip.
  • a first homogenization zone an argon / CO 2 nitrogen mixture is used as the inertizing gas.
  • the temperature is maintained in the range of 900-1000 ° C., the temperature is reduced by 200 ° C., and the temperature is raised by 250 ° C.
  • the material In order for the material to be bent into a coil, it must have suitable microstructures that permit deformation under tensile and compressive stress.
  • the now obtained hot strip undergoes recrystallization, at least in the peripheral areas, at a maintained temperature of the hot strip, at a comparatively reduced temperature or at a comparatively higher temperature.
  • the material can recrystallize and it can thus absorb tensile and compressive stresses.
  • This procedure of recrystallization is particularly suitable for lightweight steels, the u. a. may have a very large solidification interval, that is, which form a more or less large "temperature window" from the start of solidification from the melt to complete solidification and have zero-toughness or zero toughness dependent thereon.
  • the hot strip is fed to a separating device with a working speed synchronized to the rolling or transport belt speed. of a certain length cut off in the opening band and wound up in a winding system into a coil.
  • the process for cutting the hot strip can also be done immediately after the hot strip has left the second homogenization zone, in which case the cut to length hot strip is guided via suitable transport facilities in a stacking plant and stacked there in the form of plates.
  • the casting process is decoupled from the rolling process.
  • the casting speed can be selected as a function of the course of the solidification process of the melt and, on the other hand, the hot rolling process can take place at a defined hot-rolled strip temperature until a predetermined degree of deformation is achieved.
  • the transport speed of the pre-strip is influenced by means of a mass flow control unit. This prevents disturbances from the subsequent process sequences within the manufacturing process from adversely affecting the casting process and the casting belt, and can lead to thickness fluctuations, overflows, edge constrictions, and belt or stall, for example.
  • the production plant for carrying out the method according to the invention of a known casting machine which is under a protective gas atmosphere first homogenization zone for influencing the microstructure of the cast Vorbandes is subordinate, in which the temperature of the Vorbandes is selectively held, reduced or increased.
  • the first homogenization zone is followed by a first temperature adjustment device for selectively maintaining the temperature of the pre-strip, reducing the temperature, or increasing the temperature.
  • the first temperature adjusting device with a mass flow control device between a first and second pre-belt conveyor element, is followed by a second temperature adjusting device in which the casting belt is brought to a suitable rolling temperature, optionally by maintaining the temperature of the casting belt. by reducing the temperature or by raising the temperature.
  • the second temperature adjusting device is arranged downstream of a first rolling stand, in which the preliminary strip having the suitable temperature of a thickness reduction of less than 49% is subjected to at least one pass.
  • the pre-strip is now as a hot strip at a temperature of 700 - subjected to 900 0 C of a recrystallization, in particular in the edge regions of the hot strip, so that the material tension or compression forces as well as plastic deformation, which in Winding or stacking occur without affecting the microstructure can accommodate.
  • the second homogenization zone is followed by a separating device, which is operated at a synchronized with the transport speed of the hot strip conveyor working speed.
  • the device continuously tapered and hot rolled hot strip, wound after cutting or stacked as plates.
  • the first temperature setting device is followed by a mass flow control unit formed from a dancer roller or a loop lifter.
  • the mass flow control unit is in the transport direction of the pre-strip gese- hen, between a first Vorband conveying element and a second Vorband-conveying element arranged.
  • a second temperature setting device is arranged in front of the roll stand in which the pre-strip is brought to a suitable rolling temperature, so that the pre-strip can be subjected to a hot rolling process having at least one stitch so that the pre-strip then undergoes a degree of deformation of less than a hot strip 49% of the total conversion.
  • the separation device in a refinement of the invention is arranged downstream of a winding or stacking device, in which the hot strip is wound into a bundle (coil) or deposited as individual plates.
  • FIG 1 shows schematically the production plant for carrying out the method according to the invention for near-net-shape strip casting with winding or stacking device.
  • the sole FIGURE 1 shows a schematic representation of a production plant according to the invention for carrying out the method according to the invention.
  • the production plant has a casting machine 1 in the form of a horizontal strip casting plant which comprises a conveying device in the form of a circulating conveyor belt 2 with two deflection rollers 3, 3 '.
  • the casting machine 1 is further provided with a side seal 4, which prevents discontinued melt 5 can flow down to the right and left of the conveyor 2.
  • the melt 5 is transported by means of a pan 6 to the casting machine 1 and flows through a formed in the bottom of the pan 6 opening 7 in a feed vessel 8.
  • This feed vessel 8 is formed as an overflow vessel.
  • first homogenization zone 10 This includes a thermally insulated housing 11 and a roller table.
  • This first homogenization zone may optionally be used to maintain the temperature of the casting or pre-strip 9, to further cool it, or alternatively to heat it up somewhat.
  • the casting or pre-strip 9 under an inert gas atmosphere of an argon C0 2 nitrogen mixture as inerting a first process for homogenization of the structure either by holding a temperature at about 900 - 0 C, by reducing the temperature by about 200 ° C. or alternatively by raising the temperature by about 250 ° C.
  • the casting or pre-strip 9 passes through a first temperature-setting device 12 and is then replaced by means of a first pre-band
  • this second temperature setting device 15 the casting or pre-strip 9 is brought to rolling temperature, before it is then heated to a rolling temperature.
  • nem subsequent first rolling stand 16 is subjected to at least one pass a hot rolling process until the casting or pre-strip 9 has a degree of deformation of less than 49% of the total conversion.
  • the casting or pre-strip 9 is optionally maintained at a temperature of about 880-940 0 C, to a temperature of about 50 0 C reduced or alternatively the temperature increased by about 50 0 C.
  • the casting or pre-strip 9 is then fed to a second homogenization zone 17, in which the casting or pre-strip 9 is subjected to a second process for homogenization, in particular recrystallization of the microstructure. This is done by optionally the temperature of the casting or Vorbandes 9 is maintained in the second homogenization zone 17 at a temperature at about 700 - 900 0 C, the temperature is reduced by about 100 0 C or the temperature is increased by about 50 ° C.
  • the casting or pre-strip 9 then passes a separating device 18 synchronized with the transport or belt speed in the form of a pair of scissors and is then fed to a winding device 19 or a stacking device 20 as a finished rolled strip separated from the casting or pre-strip 9 ,

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

L'invention concerne un procédé et une installation de production pour la fabrication de bandes métalliques laminées à chaud. Selon ce procédé, la bande coulée tenant lieu de bande préliminaire est d'abord soumise à une première opération d'homogénéisation structurelle sous gaz de protection, puis la bande préliminaire est soumise au moins à un traitement thermique ultérieur, avant l'opération suivante qui consiste en un laminage visant à réduire l'épaisseur du produit. Après cette réduction d'épaisseur, la bande préliminaire est soumise à une seconde opération d'homogénéisation ou de recristallisation de la constitution de sa structure, avant de passer finalement par une installation séparatrice et d'être séparée de la bande préliminaire suivante sous la forme d'une bande laminée à chaud finie.
EP09771720.1A 2008-12-09 2009-12-09 Procédé de production de bandes métalliques et installation de production pour la mise en oeuvre du procédé Active EP2376240B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008061206A DE102008061206A1 (de) 2008-01-15 2008-12-09 Verfahren zur Herstellung von Bändern aus Metall und Produktionsanlage zur Durchführung des Verfahrens
DE102009032358A DE102009032358A1 (de) 2008-12-09 2009-07-08 Verfahren zur Herstellung von Bändern aus Metall und Produktionsanlage zur Durchführung des Verfahrens
PCT/EP2009/008795 WO2010066412A1 (fr) 2008-12-09 2009-12-09 Procédé de production de bandes métalliques et installation de production pour la mise en oeuvre du procédé

Publications (2)

Publication Number Publication Date
EP2376240A1 true EP2376240A1 (fr) 2011-10-19
EP2376240B1 EP2376240B1 (fr) 2014-02-12

Family

ID=42242366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09771720.1A Active EP2376240B1 (fr) 2008-12-09 2009-12-09 Procédé de production de bandes métalliques et installation de production pour la mise en oeuvre du procédé

Country Status (13)

Country Link
US (1) US20120024434A1 (fr)
EP (1) EP2376240B1 (fr)
JP (1) JP5425218B2 (fr)
KR (1) KR101332196B1 (fr)
CN (1) CN102245319B (fr)
AR (1) AR080265A1 (fr)
AU (1) AU2009326518A1 (fr)
CA (1) CA2745044C (fr)
MX (1) MX2011005636A (fr)
RU (1) RU2481903C2 (fr)
TW (1) TWI421138B (fr)
WO (1) WO2010066412A1 (fr)
ZA (1) ZA201103297B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013214940A1 (de) * 2013-07-30 2015-02-05 Sms Siemag Ag Gießwalzanlage und Verfahren zum Herstellen von Brammen
DE102015216512A1 (de) * 2015-08-28 2017-03-02 Sms Group Gmbh Anlage nach dem CSP-Konzept sowie Verfahren zum Betreiben einer solchen Anlage
EP3532213B1 (fr) * 2016-10-27 2021-09-01 Novelis, Inc. Système et procédé permettant de fabriquer des articles en alliage d'aluminium à jauge épaisse
AU2017350513B2 (en) 2016-10-27 2020-03-05 Novelis Inc. High strength 7xxx series aluminum alloys and methods of making the same
ES2951553T3 (es) 2016-10-27 2023-10-23 Novelis Inc Aleaciones de aluminio de la serie 6XXX de alta resistencia y métodos para fabricar las mismas

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JPS61296901A (ja) * 1985-06-25 1986-12-27 Kawasaki Steel Corp 鋼線材の連続式圧延設備
WO1990000100A1 (fr) * 1988-06-30 1990-01-11 Sundwiger Eisenhütte Maschinenfabrik Grah & Co. Procede et installation de fabrication d'une bande metallique d'au maximum 10 mm d'epaisseur
NL1000694C2 (nl) * 1995-06-29 1997-01-08 Hoogovens Staal Bv Werkwijze en inrichting voor het vervaardigen van een vervormbare stalen band.
ES2224283T3 (es) * 1996-12-19 2005-03-01 Corus Staal Bv Procedimiento para producir una banda u hoja de acero.
GB2322320A (en) * 1997-02-21 1998-08-26 Kvaerner Metals Cont Casting Continuous casting with rolling stages separated by a temperature controlling stage
DE19758108C1 (de) * 1997-12-17 1999-01-14 Mannesmann Ag Produktionsverfahren und -anlage zur endlosen Erzeugung von warmgewalzten dünnen Flachprodukten
US6159312A (en) * 1997-12-19 2000-12-12 Exxonmobil Upstream Research Company Ultra-high strength triple phase steels with excellent cryogenic temperature toughness
DE10206243A1 (de) * 2002-02-15 2003-08-28 Sms Demag Ag Verfahren zum Endloswalzen eines im Querschnitt als Dünnbramme bemessenen, mit Gießgeschwindigkeit erzeugten Metallstrangs, insbesondere eines Stahlstrangs, und zugehörige Stranggießmaschine
DE102005052774A1 (de) * 2004-12-21 2006-06-29 Salzgitter Flachstahl Gmbh Verfahren zum Erzeugen von Warmbändern aus Leichtbaustahl
DE102007005015A1 (de) * 2006-06-26 2008-01-03 Sms Demag Ag Verfahren und Anlage zur Herstellung von Warmband-Walzgut aus Siliziumstahl auf der Basis von Dünnbrammen
DE102007056192A1 (de) * 2007-11-21 2009-05-28 Sms Demag Ag Verfahren und Vorrichtung zum Herstellen eines Bandes aus Metall

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Title
See references of WO2010066412A1 *

Also Published As

Publication number Publication date
MX2011005636A (es) 2011-06-24
AR080265A1 (es) 2012-03-28
CN102245319A (zh) 2011-11-16
TWI421138B (zh) 2014-01-01
TW201029770A (en) 2010-08-16
RU2481903C2 (ru) 2013-05-20
EP2376240B1 (fr) 2014-02-12
CA2745044C (fr) 2015-06-30
KR101332196B1 (ko) 2013-11-25
ZA201103297B (en) 2011-12-28
AU2009326518A1 (en) 2011-06-30
CA2745044A1 (fr) 2010-06-17
JP5425218B2 (ja) 2014-02-26
RU2011128420A (ru) 2013-01-20
US20120024434A1 (en) 2012-02-02
KR20110083734A (ko) 2011-07-20
JP2012510897A (ja) 2012-05-17
WO2010066412A1 (fr) 2010-06-17
CN102245319B (zh) 2014-11-26

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