EP0595282A1 - Method and installation for manufacturing hot-rolled steel strip, in particular from a continuously cast material - Google Patents

Method and installation for manufacturing hot-rolled steel strip, in particular from a continuously cast material Download PDF

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Publication number
EP0595282A1
EP0595282A1 EP93117379A EP93117379A EP0595282A1 EP 0595282 A1 EP0595282 A1 EP 0595282A1 EP 93117379 A EP93117379 A EP 93117379A EP 93117379 A EP93117379 A EP 93117379A EP 0595282 A1 EP0595282 A1 EP 0595282A1
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Prior art keywords
recrystallization
furnace
thin slabs
train
heating
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Granted
Application number
EP93117379A
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German (de)
French (fr)
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EP0595282B1 (en
EP0595282B2 (en
Inventor
Wilfried Bald
Dieter Rosenthal
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SMS Siemag AG
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SMS Schloemann-Siemag AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/46Metal-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
    • B21B1/466Metal-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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B2201/00Special rolling modes
    • B21B2201/04Ferritic rolling

Abstract

The invention relates to a method and an installation for the production of hot-rolled steel strip from continuously cast material, preferably thin slabs with working steps of a CSP method taking place in succession at the same temperature, the thin slabs leaving a soaking furnace being heatable to temperatures above the maximum temperature achievable in the soaking furnace, the thin slabs being left a sufficient time to recrystallise after the roughing pass, and the thin slabs then being cooled to the rolling temperature for the finishing train.

Description

  • Die Erfindung betrifft ein Verfahren sowie eine Vorrichtung zur Herstellung von warmgewalztem Stahlband aus stranggegossenem Vormaterial, vorzugsweise Dünnbrammen, mit in einer Hitze aufeinanderfolgenden Arbeitsschritten eines CSP-Verfahrens, wobei das Vormaterial nach Erstarren in Längen unterteilt wird, die dem gewünschten Bundgewicht entsprechen und die Dünnbrammen in einem Ausgleichsofen homogenisiert, anschließend in einer Vorwalzstraße vorgewalzt, in einer Fertigstraße fertiggewalzt, in einer Kühlzone abgekühlt und auf einen Haspel aufgewickelt werden.The invention relates to a method and a device for producing hot-rolled steel strip from continuously cast starting material, preferably thin slabs, with successive steps of a CSP process in heat, the starting material being subdivided into lengths corresponding to the desired coil weight and the thin slabs in homogenized in a compensating furnace, then pre-rolled in a roughing train, finish-rolled in a finishing train, cooled in a cooling zone and wound onto a reel.
  • Ein derartiges Verfahren und eine derartige Vorrichtung sind z.B. durch die DE 40 09 860 A1 bekannt geworden. Es hat sich jedoch gezeigt, daß Stahlqualitäten, welche ein temperaturkontrolliertes Walzen erfordern mit diesem Konzept nur begrenzt hergestellt werden können. Insbesondere sind Stahlqualitäten, die eine Temperatur oberhalb der maximal möglichen Ausgleichsofen-Temperatur vor dem ersten Stich und eine deutlich niedrigere Temperatur vor dem zweiten Stich benötigen, mit diesem Konzept nicht flexibel, im Hinblick auf Enddicke und Endwalztemperatur walzbar.Such a method and device are e.g. made known by DE 40 09 860 A1. However, it has been shown that steel grades which require temperature-controlled rolling can only be produced to a limited extent with this concept. In particular, steel grades that require a temperature above the maximum possible equalization furnace temperature before the first pass and a significantly lower temperature before the second pass are not flexible with this concept, with regard to the final thickness and finish rolling temperature.
  • Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren sowie eine entsprechende Vorrichtung zur Herstellung von warmgewalztem Stahlband dahingehend zu verbessern, daß alle bekannten Stahlqualitäten absolut flexibel gewalzt werden können.The invention has for its object to improve a method and a corresponding device for the production of hot-rolled steel strip in such a way that all known steel qualities can be rolled absolutely flexibly.
  • Diese Aufgabe wird verfahrensmäßig durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Durch den Schritt 1 können neben den bisher möglichen Stahlqualitäten auch solche Stahlqualitäten gewalzt werden, bei denen der erste Stich im Vorverformungsgerüst Temperaturen erfordert, die über den, z. B. durch die Temperaturbeständigkeit der Rollen, ihrer Lager und Antriebe bestimmten maximalen Temperatur des Ausgleichsofen liegen.This object is achieved procedurally by the characterizing features of claim 1. In addition to the previously possible steel grades, step 1 can also be used to roll those steel grades in which the first pass in the pre-forming stand requires temperatures which exceed the z. B. by the temperature resistance of the rollers, their bearings and drives certain maximum temperature of the expansion furnace.
  • Durch den Schritt 2 ist eine optimale Gefügeausbildung möglich, so daß unverfestigtes, entspanntes Material für die Fertigstraße zur Verfügung steht. Dies wird durch eine materialspezifische Verweilzeit des Walzguts in der Rekristallisationszone erreicht.Step 2 enables an optimal structure formation, so that unconsolidated, relaxed material is available for the finishing train. This is achieved by a material-specific dwell time of the rolling stock in the recrystallization zone.
  • Der Schritt 3 gewährleistet, daß die Temperatur für den ersten Stich in der Fertigstraße nach walztechnologischen Gesichtspunkten, entsprechend des notwendigen Temperaturverlaufes in der Fertigstraße für alle Stahlqualitäten optimal eingestellt werden kann.Step 3 ensures that the temperature for the first pass in the finishing train can be optimally adjusted for all steel qualities in accordance with the rolling technology, in accordance with the necessary temperature profile in the finishing train.
  • Die Merkmale des Anspruchs 2 gestatten auch längere Verweilzeiten in der Rekristallisationszone, ohne daß diese eine zu große räumliche Ausdehnung aufweist, wobei der Warmhalteofen nach Anspruch 6 auch kürzere Wartungsarbeiten am Fertiggerüst zuläßt, ohne daß die vorhergehenden Einheiten gestoppt werden müssen.The features of claim 2 also allow longer dwell times in the recrystallization zone without this having too great a spatial extent, the holding furnace according to claim 6 also permitting shorter maintenance work on the finishing stand without the previous units having to be stopped.
  • Vorrichtungsmäßig wird die Aufgabe durch die Merkmale des Anspruchs 3 gelöst.In terms of the device, the object is achieved by the features of claim 3.
  • Das Merkmal des Anspruchs 4 erlaubt ein kurzfristiges, schnelles Aufheizen des Walzgutes, so daß schnelle Änderungen zwischen den Walzgutqualitäten keine Probleme darstellen.The feature of claim 4 allows a short, quick heating of the rolling stock, so that rapid changes between the rolling stock are not a problem.
  • Soll die CSP-Anlage mit größerem Ausstoß gefahren werden, so bietet sich wie bekannt an, zwei parallel angeordnete Gießmaschinen auf eine Walzstraße arbeiten zu lassen. Dabei hat sich bewährt, eine Fähre zwischen die Heizvorrichtung und die Ausgleichsöfen zu setzen, welche die nachfolgenden Anlagenkomponenten alternierend mit Walzgut zu versorgen vermag. Ist dabei die nachfolgende Walzstraße fluchtend mit einer der Gießmaschinen und Ausgleichsöfen vorgesehen, so hat es sich als vorteilhaft erwiesen, der Fähre noch einen weiteren Ausgleichsofen nachzuordnen.If the CSP system is to be operated with a higher output, then offers as is known, to let two casting machines arranged in parallel work on a rolling mill. It has proven useful to put a ferry between the heating device and the equalizing furnaces, which can alternately supply the subsequent system components with rolling stock. If the subsequent rolling train is aligned with one of the casting machines and leveling furnaces, it has proven to be advantageous to place a further leveling furnace behind the ferry.
  • Die Erfindung wird im folgenden anhand einer Zeichnung näher beschrieben. Dabei zeigen
  • Figur 1
    in schematischer Darstellung die Seitenansicht einer erfindungsgemäßen Einstrang-CSP-Anlage,
    Figur 2
    eine Draufsicht nach Figur 1,
    Figur 3
    in schematischer Darstellung eine Draufsicht auf eine erfindungsgemäße Zweistrang-CSP-Anlage und
    Figur 4
    in schematischer Darstellung eine Draufsicht auf eine gegenüber Figur 3 geänderte Zweistrang-CSP-Anlage.
    The invention is described below with reference to a drawing. Show
    Figure 1
    a schematic representation of the side view of a single-strand CSP system according to the invention,
    Figure 2
    2 shows a top view according to FIG. 1,
    Figure 3
    a schematic representation of a top view of a two-strand CSP system according to the invention and
    Figure 4
    a schematic representation of a plan view of a modified two-strand CSP system compared to Figure 3.
  • Figur 1 zeigt eine Stranggießmaschine 1, der eine Schere 2 nachgeordnet ist, die zum Aufteilen des stranggegossenen Formaterials in Dünnbrammen 2 dient, die den gewünschten Bundgewichten entsprechen. An die Schere 3 schließt sich ein Ausgleichsofen 4 an, dem eine weitere Schere 5 folgt.Figure 1 shows a continuous casting machine 1, which is followed by a pair of scissors 2, which is used to split the continuously cast molding material into thin slabs 2, which correspond to the desired coil weights. The scissors 3 are followed by a compensating furnace 4, which is followed by another scissors 5.
  • Daran anschließend ist eine Induktionsheizung 6 vorgesehen, die bei Bedarf die aus dem Ausgleichsofen 4 austretenden Dünnbrammen 3 auf Temperaturen über 1150°C aufzuheizen vermag. Der Induktionsheizung 6 schließt sich ein Zunderwäscher 7 und eine Vorwalzstraße, hier ein Vorverformgerüst 8 an, dem die Rekristallisationszone 9 folgt. In der Rekristallisationszone 9 ist eine Aufwickelvorrichtung 10 und eine Abwickelvorrichtung 11, z.B. eine Coilbox vorgesehen. Der Aufwickelvorrichtung 10 und der Abwickelvorrichtungen 11 ist ein Warmhalteofen 12 nebengeordnet, in den gegebenenfalls fertiggewickelte Coils zu Zwischenlagerungs- und Rekristallisationszwecken gespeichert werden können.An induction heater 6 is then provided, which, if necessary, detects the thin slabs 3 emerging from the compensating furnace 4 Can heat up temperatures above 1150 ° C. The induction heater 6 is followed by a scale washer 7 and a roughing mill, here a preforming stand 8, which is followed by the recrystallization zone 9. In the recrystallization zone 9, a winding device 10 and an unwinding device 11, for example a coil box, are provided. The winding device 10 and the unwinding devices 11 are arranged next to a holding oven 12, in which, if necessary, coils that have been completely wound can be stored for intermediate storage and recrystallization purposes.
  • In Walzrichtung hinter der Abwickelvorrichtung 11 ist eine Kühlvorrichtung 13 vorgesehen, mittels der das Walzband auf optimale Temperaturen für die anschließende Fertigstraße 14 gekühlt und gegebenenfalls entzundert werden kann. An die Fertigstraße 14 schließt sich noch eine Kühlzone 15 sowie ein Aufwickelhaspel 16 an.In the rolling direction behind the unwinding device 11, a cooling device 13 is provided, by means of which the rolled strip can be cooled to optimum temperatures for the subsequent finishing train 14 and optionally descaled. A finishing zone 14 is followed by a cooling zone 15 and a take-up reel 16.
  • Figur 3 zeigt zwei parallel angeordnete Stranggießmaschinen 1, 1', zwei Scheren 2, 2' sowie zwei Ausgleichsöfen 4, 4'. Den Ausgleichsöfen 4, 4' schließt sich eine Fähre 17 an, die einen Fährwagen 18 aufweist. Mittels des Fährwagens 18 können die Dünnbrammen 3, 3' alternierend von den Ausgleichsöfen 4, 4' in die Walzlinie transportiert werden.Figure 3 shows two parallel casting machines 1, 1 ', two scissors 2, 2' and two equalizing furnaces 4, 4 '. The equalizing furnaces 4, 4 'are followed by a ferry 17 which has a ferry car 18. The thin slabs 3, 3 'can be transported alternately from the compensating furnaces 4, 4' into the rolling line by means of the trolley 18.
  • Figur 4 zeigt, daß die Stranggießmaschine 1' die Schere 2' und der Ausgleichsofen 4' in Linie mit der Walzstraße angeordnet sind, während die Stranggießmaschine 1, die Schere 2 und der Ausgleichsofen 4 parallel dazu außerhalb der Walzlinie vorgesehen sind. Auch hier dient die Fähre 17 dazu, die Walzlinie alternieren mit Walzgut zu versorgen. Um einen konstanten Gieß- und Walzvorgang zu gewährleisten ist hinter der Fähre 17 ein Speicher 19 vorgesehen, der beheizt oder auch unbeheizt sein kann und der in Linie mit der Walzstraße angeordnet ist.Figure 4 shows that the continuous casting machine 1 ', the shears 2' and the equalizing furnace 4 'are arranged in line with the rolling mill, while the continuous casting machine 1, the shears 2 and the equalizing furnace 4 are provided in parallel outside the rolling line. Here, too, the ferry 17 serves to alternately supply the rolling line with rolling stock. In order to ensure a constant casting and rolling process, a store 19 is provided behind the ferry 17, which can be heated or also unheated and which is arranged in line with the rolling train.
  • Liste der BezugszeichenList of reference numbers
  • 11
    StranggießmaschineContinuous casting machine
    22nd
    Scherescissors
    33rd
    DünnbrammeThin slab
    44th
    AusgleichsofenCompensating furnace
    55
    Scherescissors
    66
    InduktionsheizungInduction heating
    77
    ZunderwäscherTinder washer
    88th
    VorverformgerüstPreforming stand
    99
    RekristallisationszoneRecrystallization zone
    1010th
    AufwickelvorrichtungTake-up device
    1111
    AbwickelvorrichtungUnwinder
    1212th
    WarmhalteofenHolding furnace
    1313
    KühlvorrichtungCooler
    1414
    FertigstraßeFinishing train
    1515
    KühlzoneCooling zone
    1616
    AufwickelhaspelTake-up reel
    1717th
    Fähreferry
    1818th
    FährwagenFerry car
    1919th
    SpeicherStorage

Claims (7)

  1. Verfahren zur Herstellung von warmgewalztem Stahlband aus stranggegossenem Vormaterial, vorzugsweise Dünnbrammen, mit in einer Hitze aufeinanderfolgenden Arbeitsschritten eines CSP-Verfahrens, wobei das Vormaterial nach Erstarren in Längen unterteilt wird, die dem gewünschten Bundgewicht entsprechen und die Dünnbrammen in einem Ausgleichsofen homogenisiert, anschließend in einer Vorwalzstraße vorgewalzt, in einer Fertigstraße fertiggewalzt, in einer Kühlzone abgekühlt und in einem Haspel aufgewickelt werden,
    gekennzeichnet durch
    die Schritte:
    1. Aufheizen der Dünnbrammen im Anschluß an das Homogenisieren und vor dem ersten Vorwalzstich auf Temperaturen über 1150°C,
    2. Vorwalzen der Dünnbramme mit anschließendem Rekristallisieren und
    3. Kühlen des vorgewalzten Bandes auf Walztemperatur für die Fertigstraße und anschließendes Fertigwalzen.
    Process for the production of hot-rolled steel strip from continuously cast primary material, preferably thin slabs, with successive steps of a CSP process in heat, the primary material being subdivided after solidification into lengths that correspond to the desired coil weight and homogenizing the thin slabs in a compensating furnace, then in one Roughing mill, pre-rolled in a finishing train, cooled in a cooling zone and wound in a reel,
    marked by
    the steps:
    1. heating of the thin slabs after the homogenization and before the first roughing pass to temperatures above 1150 ° C.,
    2. Pre-rolling the thin slab with subsequent recrystallization and
    3. Cool the pre-rolled strip to the rolling temperature for the finishing train and then finish rolling.
  2. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet,
    daß das vorgewalzte Band zum Rekristallisieren aufgewickelt und gegebenenfalls in einem Warmhalteofen zwischengespeichert wird, und daß im Anschluß an das Rekristallisieren das Band wieder abgewickelt und der Kühlung zugeführt wird.
    Method according to claim 1,
    characterized,
    that the pre-rolled strip is rewound for recrystallization and, if necessary, temporarily stored in a holding furnace, and that the strip is unwound again after the recrystallization and fed to the cooling system.
  3. Vorrichtung zur Herstellung von warmgewalztem Stahlband zur Durchführung des Verfahrens nach Anspruch 1 oder 2 mit mindestens einer Stranggießmaschine, mindestens einer Schere, mindestens einem Ausgleichsofen, einer Vorstraße, einer Fertigstraße, einer Kühlzone und einem Aufwickelhaspel,
    dadurch gekennzeichnet,
    - daß zwischen dem Ausgleichsofen (4, 4') und dem ersten Gerüst (8) der Vorstraße eine Heizvorrichtung (6) vorgesehen ist,
    - daß der Vorstraße (8) eine Rekristallisationszone (9) nachgeordnet ist und
    - daß vor dem ersten Gerüst der Fertigstraße (14) eine Kühlvorrichtung (13) angeordnet ist.
    Device for producing hot-rolled steel strip for carrying out the method according to claim 1 or 2 with at least one continuous casting machine, at least one pair of scissors, at least one equalizing furnace, a roughing train, a finishing train, a cooling zone and a take-up reel,
    characterized,
    - That a heating device (6) is provided between the compensating furnace (4, 4 ') and the first frame (8) of the roughing train,
    - That the Vorstraße (8) is a recrystallization zone (9) and
    - That a cooling device (13) is arranged in front of the first stand of the finishing train (14).
  4. Vorrichtung nach Anspruch 3,
    dadurch gekennzeichnet,
    daß es sich bei der Heizvorrichtung um eine Induktionsheizung (6) handelt.
    Device according to claim 3,
    characterized,
    that the heating device is an induction heater (6).
  5. Vorrichtung nach Anspruch 3 oder 4,
    dadurch gekennzeichnet,
    daß in der Rekristallisationszone (9) eine Aufwickelvorrichtung (10) und eine Abwickelvorrichtung (11) z.B. eine Coilbox vorgesehen sind.
    Device according to claim 3 or 4,
    characterized,
    that a rewinder (10) and a rewinder (11), for example a coil box, are provided in the recrystallization zone (9).
  6. Vorrichtung nach Anspruch 5,
    dadurch gekennzeichnet,
    daß der Rekristallisationszone (9) ein Warmhalteofen (12) zugeordnet ist.
    Device according to claim 5,
    characterized,
    that the recrystallization zone (9) is assigned a holding furnace (12).
  7. Vorrichtung nach mindestens einem der Ansprüche 3 bis 6 mit mehreren parallel angeordneten Gießmaschinen, Scheren und Ausgleichsöfen,
    dadurch gekennzeichnet,
    daß zwischen den Ausgleichsöfen (4, 4') und der Heizvorrichtung (6) eine Fähre (17) vorgesehen ist, der gegebenenfalls ein Speicher (19) nachgeordnet ist.
    Device according to at least one of claims 3 to 6 with a plurality of casting machines, shears and compensation furnaces arranged in parallel,
    characterized,
    that a ferry (17) is provided between the equalizing furnaces (4, 4 ') and the heating device (6), which is optionally followed by a store (19).
EP93117379A 1992-10-28 1993-10-27 Method and installation for manufacturing hot-rolled steel strip, in particular from a continuously cast material Expired - Lifetime EP0595282B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE4236307 1992-10-28
DE4236307A DE4236307A1 (en) 1992-10-28 1992-10-28 Method and plant for the production of hot-rolled steel strip, in particular from strip-shaped continuous material

Publications (3)

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EP0595282A1 true EP0595282A1 (en) 1994-05-04
EP0595282B1 EP0595282B1 (en) 1995-12-20
EP0595282B2 EP0595282B2 (en) 2002-01-02

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EP (1) EP0595282B2 (en)
JP (1) JP3271724B2 (en)
KR (1) KR970001550B1 (en)
CN (1) CN1051259C (en)
AT (1) AT131753T (en)
CA (1) CA2109397C (en)
DE (2) DE4236307A1 (en)
RU (1) RU2106212C1 (en)
TW (1) TW262407B (en)

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EP0761327A1 (en) * 1995-08-02 1997-03-12 DANIELI & C. OFFICINE MECCANICHE S.p.A. Method for the continuous casting of long products and relative continuous casting line
EP0870553A2 (en) * 1997-04-10 1998-10-14 DANIELI & C. OFFICINE MECCANICHE S.p.A. Rolling method for thin flat products and relative rolling line
EP0885974A1 (en) * 1997-06-16 1998-12-23 Sms Schloemann-Siemag Aktiengesellschaft Process and device for rolling wide hot strip in a compact strip production line
EP0947590A1 (en) * 1998-03-31 1999-10-06 Sms Schloemann-Siemag Aktiengesellschaft Method of manufacturing micro-alloyed construction steels
WO2000051755A1 (en) * 1999-03-04 2000-09-08 Pohang Iron & Steel Co., Ltd. Method of manufacturing hot rolled steel sheet using mini mill process
US6978531B1 (en) 1997-12-09 2005-12-27 Pohang Iron & Steel Co., Ltd. Method of manufacturing hot rolled steel sheet using mini mill process
WO2006058771A1 (en) * 2004-12-03 2006-06-08 Sms Demag Ag Csp continuous casting system with a roller hearth furnace and pivoting conveyors
ITUD20100149A1 (en) * 2010-07-21 2012-01-22 Danieli Off Mecc MAINTENANCE SYSTEM IN TEMPERATURE AND / OR POSSIBLE WARMING OF LONG METAL PRODUCTS AND ITS PROCEDURE
US8734601B2 (en) 2009-12-02 2014-05-27 Sms Siemag Aktiengesellschaft Method for hot rolling a metal slab, strip or sheet

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DE19821301A1 (en) * 1998-05-13 1999-11-18 Abb Patent Gmbh Arrangement and method for producing steel strip
DE10330210A1 (en) 2003-07-03 2005-01-20 Sms Demag Ag Apparatus for producing hot-rolled hot strip, in particular from strip-shaped continuously cast semi-finished material
DE10357363B4 (en) * 2003-12-09 2006-02-09 Ispat Industries Ltd., Taluka-Pen Method and plant for casting and immediately subsequent rolling of casting strands of metal, in particular of steel materials, preferably thin strands
CN100418650C (en) * 2006-09-29 2008-09-17 邯郸钢铁股份有限公司 CSP production line cold rolling feed deformation system
AT511429B1 (en) * 2011-06-10 2012-12-15 Siemens Vai Metals Tech Gmbh Method and device for pre-treating a rolling before rolling
AT511674B1 (en) * 2011-06-24 2013-04-15 Siemens Vai Metals Tech Gmbh Commissioning of a finished rolling cable in a giess-walz-verbundanlage

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* Cited by examiner, † Cited by third party
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EP0761327A1 (en) * 1995-08-02 1997-03-12 DANIELI & C. OFFICINE MECCANICHE S.p.A. Method for the continuous casting of long products and relative continuous casting line
US6062055A (en) * 1997-04-10 2000-05-16 Danieli & C. Officine Meccaniche Spa Rolling method for thin flat products and relative rolling line
EP0870553A3 (en) * 1997-04-10 1999-02-10 DANIELI & C. OFFICINE MECCANICHE S.p.A. Rolling method for thin flat products and relative rolling line
EP0870553A2 (en) * 1997-04-10 1998-10-14 DANIELI & C. OFFICINE MECCANICHE S.p.A. Rolling method for thin flat products and relative rolling line
EP0885974A1 (en) * 1997-06-16 1998-12-23 Sms Schloemann-Siemag Aktiengesellschaft Process and device for rolling wide hot strip in a compact strip production line
US6030470A (en) * 1997-06-16 2000-02-29 Sms Schloemann-Siemag Aktiengesellschaft Method and plant for rolling hot-rolled wide strip in a CSP plant
US6978531B1 (en) 1997-12-09 2005-12-27 Pohang Iron & Steel Co., Ltd. Method of manufacturing hot rolled steel sheet using mini mill process
EP0947590A1 (en) * 1998-03-31 1999-10-06 Sms Schloemann-Siemag Aktiengesellschaft Method of manufacturing micro-alloyed construction steels
WO2000051755A1 (en) * 1999-03-04 2000-09-08 Pohang Iron & Steel Co., Ltd. Method of manufacturing hot rolled steel sheet using mini mill process
WO2006058771A1 (en) * 2004-12-03 2006-06-08 Sms Demag Ag Csp continuous casting system with a roller hearth furnace and pivoting conveyors
US8734601B2 (en) 2009-12-02 2014-05-27 Sms Siemag Aktiengesellschaft Method for hot rolling a metal slab, strip or sheet
ITUD20100149A1 (en) * 2010-07-21 2012-01-22 Danieli Off Mecc MAINTENANCE SYSTEM IN TEMPERATURE AND / OR POSSIBLE WARMING OF LONG METAL PRODUCTS AND ITS PROCEDURE
EP2410274A1 (en) * 2010-07-21 2012-01-25 DANIELI & C. OFFICINE MECCANICHE S.p.A. Temperature maintenance and/or heating apparatus for long metal products and relative method
US8257643B2 (en) 2010-07-21 2012-09-04 Danieli & C. Officine Meccaniche Spa Temperature maintenance and/or possible heating apparatus for long metal products and relative method

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JP3271724B2 (en) 2002-04-08
CA2109397A1 (en) 1994-04-29
KR940008781A (en) 1994-05-16
CA2109397C (en) 2003-04-08
AT131753T (en) 1996-01-15
CN1051259C (en) 2000-04-12
EP0595282B1 (en) 1995-12-20
RU2106212C1 (en) 1998-03-10
DE4236307A1 (en) 1994-05-05
CN1088491A (en) 1994-06-29
TW262407B (en) 1995-11-11
DE59301206D1 (en) 1996-02-01
KR970001550B1 (en) 1997-02-11
EP0595282B2 (en) 2002-01-02
JPH06198302A (en) 1994-07-19

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