EP0734793A1 - Procédé et dispositif pour la production de bandes d'acier laminées à chaud - Google Patents

Procédé et dispositif pour la production de bandes d'acier laminées à chaud Download PDF

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Publication number
EP0734793A1
EP0734793A1 EP96250038A EP96250038A EP0734793A1 EP 0734793 A1 EP0734793 A1 EP 0734793A1 EP 96250038 A EP96250038 A EP 96250038A EP 96250038 A EP96250038 A EP 96250038A EP 0734793 A1 EP0734793 A1 EP 0734793A1
Authority
EP
European Patent Office
Prior art keywords
strip
reversing
rolling
steckel
finishing train
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.)
Withdrawn
Application number
EP96250038A
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German (de)
English (en)
Inventor
Werner Dipl.-Ing. Kircher
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0734793A1 publication Critical patent/EP0734793A1/fr
Withdrawn legal-status Critical Current

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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
    • B21B1/22—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
    • B21B1/30—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 non-continuous process
    • B21B1/32—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/34—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-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
    • B21B1/46—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
    • 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 process for the production of hot-rolled steel strip from strip-shaped cast material in successive steps, the solidified material being split into strip lengths heated to the rolling temperature in a reversing Steckel rolling mill with upstream and downstream Steckel furnaces and subsequent multi-stand finishing train.
  • a method and a system according to the preamble of the main claim has become known from EP 04 49 004 A2.
  • the method described there suggests, in particular for the rolling of stainless steel strips, to divide the rolling process into a roughing and a finishing rolling step, the roughing step being carried out on a reversing Steckel rolling mill.
  • the Steckel rolling mill has a so-called Steckel furnace on the input and output sides, in which the rolling stock can be wound up and unwound after passing through the Steckel rolling stand and its temperature can be controlled at the same time.
  • the finish rolling takes place in a three-stand or multi-stand tandem finishing train, into which the rolling stock is introduced after several reversing rolling steps have been carried out on the Steckel rolling mill.
  • a disadvantage of such a system is that during the rolling operation on the reversing Steckel rolling mill, the immediately following finishing train cannot be used for the rolling process, because both rolling steps, namely the roughing and finishing steps as well as the corresponding parts of the system are coupled to one another.
  • the previously known street does get by with few scaffolding, but it does the advantage of low investment through few scaffolding is bought by the disadvantage of lower system capacity.
  • 80 to 150 mm thick cast material is pre-rolled in five to seven reversing rolling passes to a thickness of 7 to 20 mm after descaling the surface, first reducing in three to five reversing passes on the Steckel rolling mill with free runout and then further reduced in further reversing rolling passes on the Steckel rolling mill using the downstream and upstream Steckel furnaces and after the last roughing pass is wound up on a winding and unwinding station used for intermediate storage in an oven atmosphere before the finishing train, from where the raw material of the finishing train brought to the rolling temperature for rolling out to finished strip thickness.
  • relatively thick starting material can be reduced to such an extent that it can be wound in the plug-in furnaces in order to subject it to further reduction stitches from the plug-in furnaces in the known mode of operation of a reversing Steckel rolling mill and then wind it up in a coil atmosphere in a furnace atmosphere.
  • the roughing strip rolled from the continuously cast primary material is completely decoupled from the subsequent finishing train, with the possibility of operating the finishing train from the second of the winding and unwinding station used as a buffer, at the same time as that in the roughing train (Reversing Steckel rolling mill) primary material is rolled. In this way there is no dead time on the finishing train; the system can be used more intensively, so that a higher capacity can be expected.
  • the pre-strip is wound up in the plug-in furnaces so that the pre-strip length is temporarily saved. Only after the fifth stitch on the Steckel roll stand does the strip start of the rolled out preliminary strip run onto the winding and unwinding station, where it is wound up into a coil within an oven atmosphere. After the coil has been moved, the preliminary strip is unwound and fed to the finishing train, with the advantage that the head of the wound preliminary strip becomes the foot when it is unwound. This creates better temperature compensation conditions that mean better rolling results.
  • the primary material is 60 to 70 mm, preferably 65 mm in the first reversing stitch, 35 to 45 mm, preferably 40 mm in the second reducing stitch, 20 to 30 mm, preferably 25 mm in the third, and 12 in the fourth reversing stitch up to 22 mm, preferably 17 mm and in the fifth reversing stitch to 7 to 17 mm, preferably 12 mm, and - after the intermediate storage - finished rolled in the finishing train to ⁇ 2 mm, preferably 1 mm.
  • the capacity of the reversing Steckel rolling mill and the finishing train are preferably designed such that the rolling times and thus the production quantity are essentially the same.
  • a method for producing hot-rolled steel strip from raw material cast in strip form on two or more parallel casting plants is proposed, which is characterized in that, in order to connect the casting plants, the primary material of at least one casting plant after splitting before the strip length and before the reversing stitch in Line is shifted with the reversing Steckel mill.
  • a system for the production of hot-rolled steel strip from strip-shaped cast material in successive work steps consisting of a continuous sheet caster with a horizontal outlet, a cross-cutting device for separating the solidified material in strip lengths, a compensating furnace for heating the material to rolling temperature, a reversing Steckel mill with pre and Subordinate plug-in furnaces and subsequent multi-stand finishing train for carrying out the method according to claims 1 to 5 is characterized in that between the reversing Steckel rolling mill and the multi-stand finishing train, a temperature-controlled intermediate storage furnace with a reel for winding the pre-strip after leaving the reversing Steckel rolling mill and unwinding the pre-strip prior to insertion into the multi-stand finishing train.
  • the temperature-controlled intermediate storage furnace with a reel decouples pre-rolling and finish-rolling and enables simultaneous operation on both parts of the plant.
  • 1 denotes a ladle turret, which is arranged upstream of the continuous casting installation 2 and which supplies it with casting melt.
  • the continuous casting system which is designed as a continuous sheet caster with a horizontal outlet, has a flame cutting machine or scissors 3 at its outlet end, with the aid of which the continuously cast primary material strand is divided into preliminary strip lengths.
  • These pre-strip lengths run via the roller table 17 onto the entry roller table 18, from where they are brought into the walking beam furnace 19 by means of the entry device, where they are adjusted to a uniform temperature via their cross section.
  • the slab is deposited on the discharge roller table 20 after the heating process in order to be fed to the Steckel mill stand 10 after descaling in the scale washer 7.
  • the Steckel roll stand 10 three roll passes are run on the roller tables 13 and 6 when the pre-strip length runs freely, without the plug-in ovens 8 and 12 being used.
  • the rolled pre-strip is wound up in the Steckel furnace 12 and, after the foot end has passed through the Steckel mill 10, is unwound again through the Steckel mill 10 and then wound up in the Steckel furnace 8.
  • the preliminary strip is wound up in the intermediate storage 14.
  • the unwinding takes place from this place into the finishing train 16, with descaling in the scale scrubber 15 possibly preceded.
  • scissors can be arranged between the intermediate store and the finishing train. While the pre-strip is being unwound from the intermediate storage 14, a new pre-strip can be rolled in the roughing train so that the roughing and finishing train can be operated simultaneously.
  • 1 denotes the ladle turret, which is arranged upstream of the continuous casting installation 2 and supplies it with molten casting.
  • the continuous caster with a horizontal outlet has a flame cutting machine 3 at its outlet end, with the aid of which the continuously cast primary material strand is subdivided into pre-strip lengths.
  • These pre-strip lengths run into the roller hearth furnace 4, where they are adjusted to a uniform temperature over their cross section.
  • a ferry 5 arranged on the output side of the roller hearth furnace 4, a preliminary strip length is brought into the rolling line in order to be fed to the Steckel mill stand 10 after descaling in the scale washer 7.
  • the Steckel roll stand 10 three rolling passes are run on the roller tables 13 and 6 when the pre-strip length runs freely, without the Steckel furnaces 8 and 12 being used.
  • the rolled pre-strip is wound up in the Steckel furnace 12 and, after the foot end has passed through the Steckel mill 10, is unwound again through the Steckel mill 10 and then wound up in the Steckel furnace 8.
  • the preliminary strip is wound up in the intermediate storage 14.
  • the unwinding takes place from this place into the finishing train 16, with descaling in the scale scrubber 15 possibly preceded.
  • a pair of scissors may be arranged in the intermediate store and the finishing train. While the roughing strip is being unwound from the intermediate storage 14, a new roughing strip can be rolled in the roughing train, so that the roughing and finishing train can be operated simultaneously.
  • the system can also be designed as a two-strand continuous caster, the ferry 5 connecting both strands of the caster to the rolling line.
  • a 100 mm thick slab is cut to length in the flame cutting device 3, moved through the roller hearth furnace 4 and brought to the necessary temperature, in order then to be brought into the rolling line by ferry 5.
  • the first two passes are rolled without the plug-in furnaces 8 and 12; in the first stitch the slab is reduced to 65 mm, in the second stitch to 40 mm and in the third stitch to 25 mm.
  • the slab rolled to the preliminary strip is moved into the Steckel furnace 12 and wound up there.
  • the fourth stitch uses the Steckel furnace 8 on the other side of the Steckel rolling mill 10, in which the preliminary strip, which has meanwhile been reduced to 17 mm, is wound up.
  • the pre-strip After unwinding and reducing again in the Steckel rolling mill 10, the pre-strip, now reduced to 12 mm, is wound up in the intermediate store after the fifth stitch in order to be fed from there to the finishing train 16.
  • a finishing strip of at least 1 mm is produced in four stands, for example.
  • the distances and lengths of the individual system components are selected so that there is no mutual impairment of the work processes and thus the entire rolling process takes place quickly and with minimal temperature losses and without dead times.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP96250038A 1995-03-28 1996-02-13 Procédé et dispositif pour la production de bandes d'acier laminées à chaud Withdrawn EP0734793A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19512953 1995-03-28
DE19512953A DE19512953A1 (de) 1995-03-28 1995-03-28 Verfahren und Vorrichtung zur Herstellung von warmgewalztem Stahlband

Publications (1)

Publication Number Publication Date
EP0734793A1 true EP0734793A1 (fr) 1996-10-02

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ID=7758978

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96250038A Withdrawn EP0734793A1 (fr) 1995-03-28 1996-02-13 Procédé et dispositif pour la production de bandes d'acier laminées à chaud

Country Status (4)

Country Link
US (1) US5689991A (fr)
EP (1) EP0734793A1 (fr)
JP (1) JPH08276202A (fr)
DE (1) DE19512953A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0893168A2 (fr) * 1997-07-23 1999-01-27 MANNESMANN Aktiengesellschaft Train pour bandes à chaud de 0,5 mm d'épaisseur
WO1999025883A1 (fr) * 1997-11-18 1999-05-27 Thyssen Krupp Stahl Ag Four pour caisse a rouleau
EP0919296A1 (fr) * 1997-11-21 1999-06-02 Sms Schloemann-Siemag Aktiengesellschaft Adaption des trains de laminage chauds pour laminer des bandes minces

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1281442B1 (it) * 1995-10-27 1998-02-18 Danieli Off Mecc Procedimento di laminazione per nastri e lamiere e linea di laminazione che concretizza tale procedimento
IT1288863B1 (it) * 1996-03-15 1998-09-25 Danieli Off Mecc Procedimento di laminazione in continuo per lamiere e/o nastri e relativa linea di laminazione in continuo
GB9803409D0 (en) * 1998-02-19 1998-04-15 Kvaerner Metals Davy Ltd Method and apparatus for the manufacture of light gauge steel strip
US6182490B1 (en) 1999-03-19 2001-02-06 Danieli Technology Inc. Super thin strip hot rolling
DE102005052815A1 (de) * 2004-12-18 2006-06-29 Sms Demag Ag Vorrichtung zur Herstellung metallischen Gutes durch Walzen
TW200927315A (en) * 2007-10-16 2009-07-01 Ihi Metaltech Co Ltd Method for magnesium hot rolling and magnesium hot rolling apparatus

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR967117A (fr) * 1947-06-05 1950-10-26 Brassert & Co Procédé de laminage à chaud de plats métalliques
FR1012157A (fr) * 1949-04-11 1952-07-07 Westfalenhutte Dortmund Ag Laminoir
US4430874A (en) * 1981-09-29 1984-02-14 Tippins Machinery Company, Inc. Vertical coiler furnace and method of rolling
EP0320846A1 (fr) * 1987-12-18 1989-06-21 Hitachi, Ltd. Dispositif et procédé pour laminer à chaud des bandes à partir de brames
EP0449004A2 (fr) * 1990-03-28 1991-10-02 Sms Schloemann-Siemag Aktiengesellschaft Procédé et installation pour la fabrication de bandes laminées à chaud, en particulier pour aciers spéciaux À  partir d'une ébauche en forme de bande coulée en continu
DE4041206A1 (de) * 1990-12-21 1992-06-25 Schloemann Siemag Ag Verfahren und anlage zur herstellung von warmgewalztem stahlband, insbesondere fuer edelstaehle aus stranggegossenem vormaterial
US5150597A (en) * 1990-06-12 1992-09-29 Hitachi, Ltd. Hot strip plant
JPH05177214A (ja) * 1991-12-27 1993-07-20 Hitachi Ltd 金属板熱間圧延設備
WO1993023182A1 (fr) * 1992-05-12 1993-11-25 Tippins Incorporated Installation et procede pour coulage des brames d'epaisseur moyenne et realisation de feuillards et de toles fortes a chaud en ligne
EP0584605A1 (fr) * 1992-08-26 1994-03-02 DANIELI & C. OFFICINE MECCANICHE S.p.A. Dispositif et procédé pour la fabrication d'une bande métallique laminée à chaud

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US4348882A (en) * 1980-01-28 1982-09-14 Tippins Machinery Company, Inc. Hot rolling strip
US4319474A (en) * 1980-03-10 1982-03-16 Davy-Loewy Limited Rolling method and apparatus
US4503697A (en) * 1983-01-25 1985-03-12 Tippins Machinery Company, Inc. Method for hot rolling slabs
US4675974A (en) * 1985-10-17 1987-06-30 Tippins Machinery Co., Inc. Method of continuous casting and rolling strip
US4782683A (en) * 1986-03-03 1988-11-08 Tippins Incorporated Hot strip mill shape processor and method
US5511303A (en) * 1992-05-12 1996-04-30 Tippins Incorporated Intermediate thickness and multiple furnace process line
DE4234454A1 (de) * 1992-10-13 1994-04-14 Schloemann Siemag Ag Verfahren und Anlage zur Herstellung von warmgewalzten Bändern oder Profilen aus stranggegossenem Vormaterial
JP3385684B2 (ja) * 1993-01-20 2003-03-10 石川島播磨重工業株式会社 熱間圧延設備および熱間圧延方法
US5430930A (en) * 1993-10-12 1995-07-11 Italimpianti Of America, Inc. Method of manufacturing hot strip
US5467519A (en) * 1994-01-10 1995-11-21 Tippins Incorporated Intermediate thickness twin slab caster and inline hot strip and plate line

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR967117A (fr) * 1947-06-05 1950-10-26 Brassert & Co Procédé de laminage à chaud de plats métalliques
FR1012157A (fr) * 1949-04-11 1952-07-07 Westfalenhutte Dortmund Ag Laminoir
US4430874A (en) * 1981-09-29 1984-02-14 Tippins Machinery Company, Inc. Vertical coiler furnace and method of rolling
EP0320846A1 (fr) * 1987-12-18 1989-06-21 Hitachi, Ltd. Dispositif et procédé pour laminer à chaud des bandes à partir de brames
EP0449004A2 (fr) * 1990-03-28 1991-10-02 Sms Schloemann-Siemag Aktiengesellschaft Procédé et installation pour la fabrication de bandes laminées à chaud, en particulier pour aciers spéciaux À  partir d'une ébauche en forme de bande coulée en continu
US5150597A (en) * 1990-06-12 1992-09-29 Hitachi, Ltd. Hot strip plant
DE4041206A1 (de) * 1990-12-21 1992-06-25 Schloemann Siemag Ag Verfahren und anlage zur herstellung von warmgewalztem stahlband, insbesondere fuer edelstaehle aus stranggegossenem vormaterial
JPH05177214A (ja) * 1991-12-27 1993-07-20 Hitachi Ltd 金属板熱間圧延設備
WO1993023182A1 (fr) * 1992-05-12 1993-11-25 Tippins Incorporated Installation et procede pour coulage des brames d'epaisseur moyenne et realisation de feuillards et de toles fortes a chaud en ligne
EP0584605A1 (fr) * 1992-08-26 1994-03-02 DANIELI & C. OFFICINE MECCANICHE S.p.A. Dispositif et procédé pour la fabrication d'une bande métallique laminée à chaud

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 17, no. 592 (M - 1502) 28 October 1993 (1993-10-28) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0893168A2 (fr) * 1997-07-23 1999-01-27 MANNESMANN Aktiengesellschaft Train pour bandes à chaud de 0,5 mm d'épaisseur
EP0893168A3 (fr) * 1997-07-23 1999-03-31 MANNESMANN Aktiengesellschaft Train pour bandes à chaud de 0,5 mm d'épaisseur
US6023835A (en) * 1997-07-23 2000-02-15 Mannesmann Ag Process for producing thin-hot rolled strip
WO1999025883A1 (fr) * 1997-11-18 1999-05-27 Thyssen Krupp Stahl Ag Four pour caisse a rouleau
DE19750998C1 (de) * 1997-11-18 1999-08-19 Thyssenkrupp Stahl Ag Coilboxofen
EP0919296A1 (fr) * 1997-11-21 1999-06-02 Sms Schloemann-Siemag Aktiengesellschaft Adaption des trains de laminage chauds pour laminer des bandes minces

Also Published As

Publication number Publication date
US5689991A (en) 1997-11-25
JPH08276202A (ja) 1996-10-22
DE19512953A1 (de) 1996-10-02

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