US20050167076A1 - Method for the continuous rolling of a metal bar, particularly a steel bar, which is produced at a casting speed and the cross section of which is configured as a thin slab, and corresponding continuous casting machine - Google Patents

Method for the continuous rolling of a metal bar, particularly a steel bar, which is produced at a casting speed and the cross section of which is configured as a thin slab, and corresponding continuous casting machine Download PDF

Info

Publication number
US20050167076A1
US20050167076A1 US10/503,873 US50387304A US2005167076A1 US 20050167076 A1 US20050167076 A1 US 20050167076A1 US 50387304 A US50387304 A US 50387304A US 2005167076 A1 US2005167076 A1 US 2005167076A1
Authority
US
United States
Prior art keywords
accordance
rolling
strand
casting machine
continuous
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.)
Abandoned
Application number
US10/503,873
Other languages
English (en)
Inventor
Wolfgang Hennig
Karl Rittmer
Sitki Altuntop
Manfred Kolakowski
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
Assigned to SMS DEMAG AG reassignment SMS DEMAG AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOLAKOWSKI, MANFRED, RITTNER, KARL, ALTUNTOP, SITKI, HENNIG, WOLFGANG
Publication of US20050167076A1 publication Critical patent/US20050167076A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1226—Accessories for subsequent treating or working cast stock in situ for straightening strands
    • 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
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2201/00—Special rolling modes
    • B21B2201/14—Soft reduction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
    • B21B41/08—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters without overall change in the general direction of movement of the work

Definitions

  • the invention concerns a method for the continuous rolling of a metal strand, especially a steel strand, which is produced at casting speed, has the cross-sectional dimensions of a thin slab, is bent during cooling, straightened, cut to length as required, and after homogenization of the temperature, introduced into a first rolling stand to be rolled.
  • the invention also concerns a corresponding continuous casting machine.
  • a method of this type is used for so-called thin slabs, which have a cast thickness of about 50-90 mm and are rolled out into strips. Compared to conventional continuous casting plants and rolling trains, significant amounts of energy and labor can be saved. Two different methods are preferably used for this purpose, but they are both aimed at the same result.
  • a thin slab with a thickness of 90 mm is cast and then reduced to a thickness of 15 mm in several rolling stages. The cooling that occurs during the thickness reduction is compensated by a suitably long induction heating station.
  • the thin slab is then coiled and placed in a holding furnace. A coil can then be uncoiled and rolled in a hot rolling mill.
  • a funnel mold which forms a thin slab of about 50 mm.
  • a temporary shutdown of the rolling train is compensated by the soaking furnace, in which the individual lengths remain.
  • the slabs can be moved at a higher speed than the casting speed, so that spaces are present between the slabs.
  • an additional furnace length is provided as a buffer interval. During a shutdown of the rolling mill, the casting machine can continue to operate until these gaps are filled.
  • the demand is determined, e.g., by the roll service life or, when the casting speed differs from the rolling speed, by the furnace length (so-called semi continuous rolling).
  • the objective of the invention is to design the continuous casting plant right from the start in such a way that the rolling method can also be subsequently changed.
  • the goal is thus to be able later to also use continuous rolling with the existing continuous casting machine.
  • this objective is achieved by a method in which a vertically cast and solidifying strand with a guide length that is adjusted to the casting speed is supported, bent, and straightened in one or more segments and guided in a loop, which is supported from below, into a straightening driver, which is positioned at a distance approximately equal to the length of the loop, before being cut to length.
  • the advantage of such a loop is that it serves as a buffer, which makes it possible to compensate speed differences between the continuous casting and the rolling in a continuous rolling process.
  • provisions are made for the addition of a segment to lengthen the strand support for higher casting speeds.
  • the loop can be controlled according to the required rolling speed.
  • casting can be carried out at casting speeds of about 8-12 m/min due to the greater supported length.
  • the indicated method makes it possible to produce a thin slab with a solidified thickness of 50-70 mm.
  • the cast strand is bent and straightened at the outlet of the loop. This takes into account variable slack of the loop on the basis of a changing entry angle.
  • the thin slab is subjected to an initial pass down to a thickness of about 50 mm.
  • continuous rolling can also be practiced in such a way that at a casting thickness greater than 50 mm, e.g., 60 to 70 mm, the desired rolling thickness is reduced by LCR (liquid core reduction) to such an extent that complete solidification is-completed in the existing strand support without lengthening.
  • LCR liquid core reduction
  • measures can be taken for a suitable loop for casting/rolling speed equalization.
  • the corresponding continuous casting machine which is connected in front of a rolling train for continuous rolling and on which a metal strand, especially a steel strand, with the cross-sectional dimensions of a thin slab can be cast.
  • a vertical strand support is provided, which is adjusted to the casting speed and is followed by at least a bending driver, a straightening driver, a cut-to-length line, a continuous-type furnace, and the first rolling stand, is designed for continuous rolling by providing a free space that extends downward approximately from the zero level between the bending driver and the straightening driver, and by installing a roller section in this free space, which can be raised and lowered and which is provided in a lowest position for a maximum loop of the cast strand.
  • Additional features provide that the formation of the loop and thus the casting/rolling speed equalization are controlled by the straightening driver.
  • the continuous casting machine can be prepared for higher casting speeds by making it possible to install at least one additional support segment with increasing casting speed.
  • the dummy bar system can be used in existing plants. Thus, it is advantageous in vertical casting machines to be able to withdraw a dummy bar vertically downward.
  • an alternative consists in being able to withdraw the dummy bar upward to the zero level behind the straightening driver.
  • Additional features are derived from the provision, in the area of the bending driver, of a cutting torch, which can be moved out for emergency cutting.
  • FIG. 1 shows a longitudinal-section through a casting-rolling plant for continuous rolling.
  • FIG. 2 shows a partial view of a vertical continuous casting machine with short strand support for single-slab operation, in which the bending driver is supported.
  • FIG. 3 shows the same partial view for the continuous operation with lengthened strand guide and the driver on the foundation.
  • the continuous casting machine 1 is a vertical casting machine, from which the cast strand 2 is drawn off vertically from the continuous casting mold (not shown) and is completely cooled in a strand support 3 between a series of pairs of strand containment rolls 3 a, and during this process the cast strand 1 completely solidifies.
  • Driving power is transmitted to the cast strand by at least two pairs of drive rolls 3 b. Below the pairs of drive rolls 3 b, there is a bending roll 4 , which bends the cast slab 2 from the vertical, thereby uncoupling the slab 2 and the dummy bar 15 .
  • the support roll 5 acts to-steady and support the strand during uncoupling and later serves as a support point or unrolling point of the cast slab 2 in the bend.
  • a free space 10 is formed in the foundation.
  • a straightening driver 6 which takes up the cast strand 2 and straightens it horizontally.
  • the straightening driver 6 is followed by a cut-to-length line 7 , which, as shown, can consist of a shear 7 a, and thereafter the cast slab strand 2 or the cut lengths of cast strand travel into a continuous-type furnace 8 for temperature homogenization and adjustment of the rolling temperature.
  • the straightening driver 6 stands on the zero level 9 , on which it also stands for rolling of single slabs, position 17 .
  • the straightening driver 6 can be moved to create the free space 10 for the loop 11 .
  • the cast slab 2 forms a loop 11 during continuous rolling to allow speed equalization between the casting speed and the rolling speed.
  • the loop 11 is supported by means of a roller section 12 that can be raised and lowered.
  • Another support segment 13 has been installed for high casting speeds of, for example 8-12 m/min.
  • the bending driver 3 b, 4 is initially placed on a special support structure 14 .
  • the dummy bar 15 is driven vertically past the bending roll 5 and held by dummy bar drive rolls 18 and brought out of the casting line through dummy bar guides 19 and 20 ( FIG. 2 ).
  • the strand support 3 is set for the presently customary casting speed of, e.g., 6 m/min, at a height of, e.g., 10 m.
  • the bending driver 4 which follows is located, together with the drive rolls 3 b, on the support structure 14 .
  • An additional support segment 13 is installed for the conversion to continuous rolling in order to operate at higher casting speeds.
  • The-bending driver 3 b, 4 , the support roll 5 , and the dummy bar withdrawal system are shifted downward and then rest on the foundation, as shown in FIG. 3 .
  • the straightening driver 6 is moved out of position 17 , which is shown with broken lines ( FIG. 1 ), towards the cut-to-length line 7 . This creates the space for the loop 11 , which makes it possible to equalize the speed difference between casting and rolling.
  • a cutting torch 16 can be installed for emergency cutting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
US10/503,873 2002-02-15 2003-01-28 Method for the continuous rolling of a metal bar, particularly a steel bar, which is produced at a casting speed and the cross section of which is configured as a thin slab, and corresponding continuous casting machine Abandoned US20050167076A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10206243A DE10206243A1 (de) 2002-02-15 2002-02-15 Verfahren zum Endloswalzen eines im Querschnitt als Dünnbramme bemessenen, mit Gießgeschwindigkeit erzeugten Metallstrangs, insbesondere eines Stahlstrangs, und zugehörige Stranggießmaschine
DE10206243.9 2002-02-15
PCT/EP2003/000831 WO2003068425A1 (fr) 2002-02-15 2003-01-28 Procede de laminage continu d'un boyau de metal, notamment d'un boyau d'acier, produit a une vitesse de coulee et dont la section est celle d'une fine brame, et machine de coulee continue correspondante

Publications (1)

Publication Number Publication Date
US20050167076A1 true US20050167076A1 (en) 2005-08-04

Family

ID=27634967

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/503,873 Abandoned US20050167076A1 (en) 2002-02-15 2003-01-28 Method for the continuous rolling of a metal bar, particularly a steel bar, which is produced at a casting speed and the cross section of which is configured as a thin slab, and corresponding continuous casting machine

Country Status (14)

Country Link
US (1) US20050167076A1 (fr)
EP (1) EP1474252B1 (fr)
JP (1) JP4447922B2 (fr)
KR (1) KR100971901B1 (fr)
CN (1) CN1283379C (fr)
AT (1) ATE355138T1 (fr)
AU (1) AU2003206789A1 (fr)
CA (1) CA2474973C (fr)
DE (2) DE10206243A1 (fr)
ES (1) ES2280727T3 (fr)
RU (1) RU2310529C2 (fr)
UA (1) UA84128C2 (fr)
WO (1) WO2003068425A1 (fr)
ZA (1) ZA200404046B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007045988A2 (fr) * 2005-10-21 2007-04-26 Danieli & C. Officine Meccaniche S.P.A. Processus et installation de production de bande metallique
WO2008113848A1 (fr) * 2007-03-21 2008-09-25 Danieli & C. Officine Meccaniche S.P.A. Procédé et usine pour la production de bandes de métal
US20090020259A1 (en) * 2006-03-09 2009-01-22 Jorg Bausch Continuous Casting Plant and Method of Operating a Continuous Casting Plant
US20130074557A1 (en) * 2010-04-30 2013-03-28 Gerald Eckerstorfer Reduction of the strip tension of rolling stock between two rolling units to a minimum
US20150000861A1 (en) * 2012-02-01 2015-01-01 Sms Siemag Aktiengesellschaft Method for the continuous casting of a metal strand in a continuous casting installation and a continuous casting installation

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120024434A1 (en) * 2008-12-09 2012-02-02 Rolf Franz Method for producing strips of metal, and production line for performing the method
DE102010050647A1 (de) * 2009-11-21 2011-05-26 Sms Siemag Aktiengesellschaft Anlage und Verfahren zum Gießen und Walzen von Metall
DE102010028922A1 (de) * 2010-05-12 2011-11-17 Siemens Aktiengesellschaft Verfahren zur Einstellung einer Zugspannung für ein eine Anlage durchlaufendes Metallband, Steuer- und/oder Regeleinrichtung für eine Metallband verarbeitende Anlage, und Anlage zum Verarbeiten von Metallband
DE102012013425A1 (de) * 2012-07-03 2014-01-09 Salzgitter Flachstahl Gmbh Kontinuierlich arbeitende Bandgieß- und Walzanlage
AT522265B1 (de) * 2019-03-06 2021-12-15 Primetals Technologies Austria GmbH Umbau einer stranggiessanlage für knüppel- oder vorblockstränge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861456A (en) * 1971-08-24 1975-01-21 United States Steel Corp Mechanism for controlling forces on a strand as it solidifies
US4953615A (en) * 1988-02-01 1990-09-04 Anton Hulek Plant for the continuous casting of steel
US5503217A (en) * 1990-07-23 1996-04-02 Davy Mckee (Sheffield) Limited Method of manufacturing metal strip
US6209620B1 (en) * 1997-07-19 2001-04-03 Sms Schloemann-Siemag Aktiengesellschaft Method and apparatus for producing coated hot-rolled and cold-rolled strip
US6536504B2 (en) * 2000-08-08 2003-03-25 Castrip, Llc Continuous strip casting device and method of use thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58173005A (ja) * 1982-04-02 1983-10-11 Kawasaki Steel Corp エンドレスロ−リング方法
JPS63309306A (ja) * 1987-06-11 1988-12-16 Hitachi Ltd 連続鋳造鋳片の圧延設備及び圧延方法
JPS6483353A (en) * 1987-09-24 1989-03-29 Hitachi Ltd Passing through apparatus for thin cast slab

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861456A (en) * 1971-08-24 1975-01-21 United States Steel Corp Mechanism for controlling forces on a strand as it solidifies
US4953615A (en) * 1988-02-01 1990-09-04 Anton Hulek Plant for the continuous casting of steel
US5503217A (en) * 1990-07-23 1996-04-02 Davy Mckee (Sheffield) Limited Method of manufacturing metal strip
US6209620B1 (en) * 1997-07-19 2001-04-03 Sms Schloemann-Siemag Aktiengesellschaft Method and apparatus for producing coated hot-rolled and cold-rolled strip
US6536504B2 (en) * 2000-08-08 2003-03-25 Castrip, Llc Continuous strip casting device and method of use thereof

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7909085B2 (en) 2005-10-21 2011-03-22 Danieli & C. Officine Meccaniche S.P.A. Process and plant for producing metal strip
WO2007045988A3 (fr) * 2005-10-21 2007-07-26 Danieli Off Mecc Processus et installation de production de bande metallique
US20080251232A1 (en) * 2005-10-21 2008-10-16 Danieli & Officine Meccaniche S.P.A. Process and Plant For Producing Metal Strip
WO2007045988A2 (fr) * 2005-10-21 2007-04-26 Danieli & C. Officine Meccaniche S.P.A. Processus et installation de production de bande metallique
US20090020259A1 (en) * 2006-03-09 2009-01-22 Jorg Bausch Continuous Casting Plant and Method of Operating a Continuous Casting Plant
US8100166B2 (en) * 2006-03-09 2012-01-24 Sms Siemag Aktiengesellschaft Continuous casting plant and method of operating a continuous casting plant
WO2008113848A1 (fr) * 2007-03-21 2008-09-25 Danieli & C. Officine Meccaniche S.P.A. Procédé et usine pour la production de bandes de métal
US20100116456A1 (en) * 2007-03-21 2010-05-13 Gianpietro Benedetti Process and a plant for the production of metal strip
US7954539B2 (en) 2007-03-21 2011-06-07 Danieli & C.Officine Meccanicite, S.p.A. Process and a plant for the production of metal strip
US20130074557A1 (en) * 2010-04-30 2013-03-28 Gerald Eckerstorfer Reduction of the strip tension of rolling stock between two rolling units to a minimum
US9694403B2 (en) * 2010-04-30 2017-07-04 Primetals Technologies Austria GmbH Reduction of the strip tension of rolling stock between two rolling units to a minimum
US20150000861A1 (en) * 2012-02-01 2015-01-01 Sms Siemag Aktiengesellschaft Method for the continuous casting of a metal strand in a continuous casting installation and a continuous casting installation
US9802244B2 (en) * 2012-02-01 2017-10-31 Sms Group Gmbh Method for the continuous casting of a metal strand in a continuous casting installation and a continuous casting installation

Also Published As

Publication number Publication date
RU2310529C2 (ru) 2007-11-20
ATE355138T1 (de) 2006-03-15
RU2004127595A (ru) 2005-04-20
JP4447922B2 (ja) 2010-04-07
EP1474252A1 (fr) 2004-11-10
UA84128C2 (ru) 2008-09-25
KR20040076862A (ko) 2004-09-03
CA2474973A1 (fr) 2003-08-21
ZA200404046B (en) 2005-04-07
ES2280727T3 (es) 2007-09-16
CN1633341A (zh) 2005-06-29
KR100971901B1 (ko) 2010-07-23
CN1283379C (zh) 2006-11-08
DE50306657D1 (de) 2007-04-12
WO2003068425A1 (fr) 2003-08-21
AU2003206789A1 (en) 2003-09-04
DE10206243A1 (de) 2003-08-28
JP2005522327A (ja) 2005-07-28
EP1474252B1 (fr) 2007-02-28
CA2474973C (fr) 2010-09-21

Similar Documents

Publication Publication Date Title
US8479550B2 (en) Method for the production of hot-rolled steel strip and combined casting and rolling plant for carrying out the method
US7478664B2 (en) Method and continuous casting and rolling plant for semi-endless or endless rolling by casting a metal strand, especially a steel strand, which is cut to length as required after solidification
US5630467A (en) Thin slab continuous casting machine and method
US6092586A (en) Method and arrangement for producing hot-rolled steel strip
US8137485B2 (en) Process and device for producing strips of silicon steel or multiphase steel
KR20070112879A (ko) 중간 두께 판을 위한 연속 주조 및 압연 방법
CN109922904B (zh) 铸造-轧制-复合设备和用于连续地制造热轧的成品带钢的方法
CA2474973C (fr) Procede de laminage continu d'un boyau de metal, notamment d'un boyau d'acier, produit a une vitesse de coulee et dont la section est celle d'une fine brame, et machine de coulee continue correspondante
US20080257522A1 (en) Csp Continuous Casting System With a Roler Hearth Furnace and Pivoting Conveyors
US20120144638A1 (en) Device for producing a hot-rolled thermal strip, especially made of strip-type continuous casting material
CN1978080A (zh) 一种带钢生产工艺－esp
US9126263B2 (en) CSP-continuous casting plant with an additional rolling line
US20120018113A1 (en) CSP-continuous casting plant with an additional rolling line
JPS6234458B2 (fr)
RU2128559C1 (ru) Способ изготовления полосы из пружинных сталей и ее последующей обработки
KR100990867B1 (ko) 응고 후에 필요에 따라 소정 길이로 절단되는 금속 빌렛,특히 강 빌렛의 주조에 의한 반 연연속 압연 또는 연연속압연 방법 및 그를 위한 연속 주조 압연 설비
Crawford Maximising the Minimill

Legal Events

Date Code Title Description
AS Assignment

Owner name: SMS DEMAG AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HENNIG, WOLFGANG;RITTNER, KARL;ALTUNTOP, SITKI;AND OTHERS;REEL/FRAME:016344/0341;SIGNING DATES FROM 20040512 TO 20040715

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION