US20120048501A1 - Method and Casting/Rolling Plant for the Production of Hot-Rolled Metallic Strips, Especially Steel Strips, Having Great Surface Quality - Google Patents

Method and Casting/Rolling Plant for the Production of Hot-Rolled Metallic Strips, Especially Steel Strips, Having Great Surface Quality Download PDF

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Publication number
US20120048501A1
US20120048501A1 US12/223,410 US22341006A US2012048501A1 US 20120048501 A1 US20120048501 A1 US 20120048501A1 US 22341006 A US22341006 A US 22341006A US 2012048501 A1 US2012048501 A1 US 2012048501A1
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US
United States
Prior art keywords
casting
rolling
strand
oscillation
hot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/223,410
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English (en)
Inventor
Christian Bilgen
Tilmann Böcher
Wolfgang Hennig
Jürgen Gaydoul
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
Hermetik Hydraulik AB
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to SMS DEMAG AKTIENGESELLSCHAFT, HERMETIK HYDRAULIK AB reassignment SMS DEMAG AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GAYDOUL, JURGEN, HENNIG, WOLFGANG, BILGEN, CHRISTIAN, BOCHER, TILMANN
Assigned to SMS SIEMAG AKTIENGESELLSCHAFT reassignment SMS SIEMAG AKTIENGESELLSCHAFT CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SMS DEMAG AG
Publication of US20120048501A1 publication Critical patent/US20120048501A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/053—Means for oscillating the moulds
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/22—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for rolling metal immediately subsequent to continuous casting, i.e. in-line rolling of steel

Definitions

  • the invention concerns a method and a casting and rolling plant for producing hot-rolled metal strip, especially steel strip, of high surface quality from continuously cast slabs or thin slabs, which is subjected to a surface descaling, heated to rolling temperature, and finish rolled to thin strip gauges in a multiple-stand hot-strip rolling train, where the cast strand, after emerging from a strand guide, before entering a soaking furnace and/or after emerging from a soaking furnace and entering the hot-strip rolling train, is sprayed on one or both of its surfaces by several rotating nozzles, from which pressurized liquid is recurrently sprayed onto the same places on the surface with high impact pressure to remove scale and/or casting flux and to deep-clean the oscillation marks.
  • EP 0 586 823 B1 discloses a descaling device for casting and rolling trains.
  • a rotary arm with a nozzle is used, and retaining, protective, and recovery plates for the removed scale and the large amount of spray water are proposed.
  • EP 0 625 383 B1 describes a first descaling device, which can consist of a descaling sprayer of a conventional design, and a second descaling device with rotating nozzles.
  • EP 0 611 610 B1 describes rotary descaling with low water consumption, which is intended to produce a smaller temperature drop of the rolling stock.
  • the objective of the invention is to incorporate not only the use of the rotating descaler but also previously unconsidered parameters related to continuous casting.
  • this objective is achieved, in combination with the aforementioned prior art of this general type, by virtue of the fact that the hydraulically oscillated continuous casting mold is moved in several different oscillation curves and that the deep cleaning of the oscillation marks is carried out by setting the oscillation pattern that is determined to be optimal for each casting material.
  • the advantages are that, besides the actual descaling, the oscillation marks can now be largely cleaned, which is conducive to final rolling to ultrathin final rolling thicknesses of less than or equal to 1.2 mm. This means that, for example, for these dimensions, finish rolling in the austenite range of crystalline structure is possible.
  • the temperature losses of the cast strand are kept low by admission of pressure medium to the rotating nozzles under automatic control according to the temperature level of the cast strand or strand of rolling stock. This reduces the temperature losses of the slabs and thin slabs, which results in significantly better conditions for the hot rolling of the ultrathin final rolling thicknesses and in energy savings.
  • the associated casting and rolling plant especially a compact casting and rolling plant (CSP), which consists of continuous casting installation for liquid metals, especially liquid steel, whose continuous casting mold is connected with a hydraulic oscillation drive, which is followed in the direction of strand withdrawal by at least a strand guide, a soaking furnace, possibly a furnace transverse conveyor, a multiple-stand hot-strip finishing train, and a coiler, is further developed in such a way that a device with rotating nozzles is arranged between the strand guide and the soaking furnace or between a straightening driver and a shear and/or between the soaking furnace and the hot-strip finishing train and that a pressure medium is recurrently sprayed from these nozzles onto the same places on the surface with high impact pressure.
  • CSP compact casting and rolling plant
  • nozzles for pressure medium are installed on a rotor.
  • rotors with nozzles for pressure medium mounted on the periphery of the rotor are arranged in a row transverse to the direction of travel of the cast strand or strand of rolling stock. This makes it possible to replace some or all of the previously used spray bars of the descaling sprayer.
  • the invention provides for the use of the rotary descaling device in a hot-strip rolling train with seven or more finish rolling stands before entry into the first finish rolling stand.
  • FIG. 1 shows a compact casting and rolling plant in a perspective side view.
  • FIG. 2 shows a continuous casting mold, which has a hydraulic oscillation drive and is housed in a compact protective housing.
  • FIG. 3 shows several diagrams of different oscillatory movements of the continuous casting mold.
  • FIG. 4 shows an individual rotor with nozzles arranged on the periphery of the rotor.
  • a casting and rolling plant 1 ( FIG. 1 ), which is especially a CSP plant (compact steel plant), consists of a continuous casting installation 2 , in which liquid metal, especially liquid steel, is cast by means of a continuous casting mold 9 .
  • the continuous casting mold 9 is provided with a hydraulically oscillating drive 9 a ( FIG. 2 ).
  • the continuous casting mold 9 is followed in the direction of strand withdrawal 11 by a strand guide 3 , a soaking furnace 4 , optionally a furnace transverse conveyor 5 , a multiple-stand hot-strip finishing train 6 , and a coiler 8 for coiling the strip 7 .
  • a device 14 with rotating nozzles 15 ( FIG. 4 ) is arranged between the strand guide 3 and the soaking furnace 4 or between a straightening driver 12 and a shear 13 and/or between the soaking furnace 4 and the hot-strip finishing train 6 , and a pressure medium, usually a liquid, e.g., water, is recurrently sprayed from these nozzles onto the same places on the surface with high impact pressure.
  • a pressure medium usually a liquid, e.g., water
  • the hydraulically oscillating continuous casting mold 9 is moved in several different oscillation curves 16 , 17 , 18 , so that a different oscillation pattern 16 a, 17 a, 18 a is obtained for each selected casting material.
  • the oscillation curves 16 , 17 , 18 can be obtained by different magnitudes of mold oscillation, different casting speeds, different advancing mold speeds during the downward stroke (so-called negative strip), different curve forms (e.g., sinusoidal oscillations), and the like.
  • Much less pressurized liquid can be admitted into the rotating nozzles 15 as pressure medium than has previously been used in so-called descaling sprayers under conditions that are otherwise identical, i.e., the opposing processes are based on the same parameters.
  • the temperature losses of the cast strand 2 b are kept as low as possible by admission of pressure medium to the rotating nozzles 15 under automatic control according to the desired temperature level of the cast strand or strand of rolling stock 2 b.
  • nozzles 15 for the pressure medium are combined on a rotor 20 ( FIG. 4 ), and several rotors 20 have nozzles 15 for pressure medium mounted on the periphery 20 a of the rotor 20 and are arranged in a row of nozzles 21 transverse to the direction of travel of the cast strand or strand of rolling stock. Advantages also result from several such rows of nozzles 21 , where smaller nozzle jets can be used than in the case of only a single row of nozzles 21 .
  • the rotary descaling can be used on a hot-strip rolling train 6 with seven or more finish rolling stands 6 a before the entry of the rolling stock into the first finish rolling stand 6 a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Laminated Bodies (AREA)
US12/223,410 2006-02-02 2006-12-22 Method and Casting/Rolling Plant for the Production of Hot-Rolled Metallic Strips, Especially Steel Strips, Having Great Surface Quality Abandoned US20120048501A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006004688.9 2006-02-02
DE102006004688A DE102006004688A1 (de) 2006-02-02 2006-02-02 Verfahren und Giess-Walz-Anlage zum Herstellen von warmgewalztem Metall - insbesondere Stahlwerkstoff-Band mit hoher Oberflächengüte
PCT/EP2006/012459 WO2007087886A1 (de) 2006-02-02 2006-12-22 Verfahren und giess-walz-anlage zum herstellen von warmgewalztem metallband, insbesondere stahlwerkstoffband, mit hoher oberflächengüte

Publications (1)

Publication Number Publication Date
US20120048501A1 true US20120048501A1 (en) 2012-03-01

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ID=37744383

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/223,410 Abandoned US20120048501A1 (en) 2006-02-02 2006-12-22 Method and Casting/Rolling Plant for the Production of Hot-Rolled Metallic Strips, Especially Steel Strips, Having Great Surface Quality

Country Status (18)

Country Link
US (1) US20120048501A1 (es)
EP (1) EP1981660B1 (es)
JP (1) JP2009525182A (es)
KR (1) KR20080106891A (es)
CN (1) CN101410198B (es)
AR (1) AR059290A1 (es)
AU (1) AU2006337463B2 (es)
BR (1) BRPI0621300A2 (es)
CA (1) CA2640751C (es)
DE (1) DE102006004688A1 (es)
EG (1) EG25282A (es)
ES (1) ES2389860T3 (es)
MX (1) MX2008009949A (es)
RU (1) RU2414978C2 (es)
TW (1) TWI381894B (es)
UA (1) UA95100C2 (es)
WO (1) WO2007087886A1 (es)
ZA (1) ZA200805313B (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11103907B2 (en) 2016-03-18 2021-08-31 Sms Group Gmbh Device and method for descaling a workpiece in motion
EP4186615A1 (de) * 2021-11-24 2023-05-31 SMS Group GmbH Verfahren zum herstellen eines giessstrangs

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT507663B1 (de) * 2009-04-09 2010-07-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zum aufbereiten von warmwalzgut
CN101850409B (zh) * 2010-06-08 2012-02-29 攀钢集团钢铁钒钛股份有限公司 一种连铸方法
CN106180218A (zh) * 2014-12-05 2016-12-07 财团法人金属工业研究发展中心 用于热轧钢胚除锈与挡水的装置及其方法
DE102015206393A1 (de) * 2015-04-10 2016-10-13 Sms Group Gmbh Vorrichtung zum Reinigen der Oberfläche eines Gegenstandes
ES2681486T3 (es) * 2015-12-23 2018-09-13 Hammelmann GmbH Dispositivo y método para la limpieza de un cuerpo con una capa superficial que ha de ser eliminada
EP3573772B1 (de) * 2017-01-24 2021-03-03 Primetals Technologies Austria GmbH Giesswalzanlage und verfahren zum behandeln eines werkstücks mittels einer solchen
KR102170939B1 (ko) * 2018-11-27 2020-10-29 주식회사 포스코 압연소재 처리설비 및 처리방법
CN110227719A (zh) * 2019-07-04 2019-09-13 攀钢集团攀枝花钢钒有限公司 用于低合金热轧钢板表面起皮缺陷的控制方法
CN111570525A (zh) * 2020-05-08 2020-08-25 马鞍山钢铁股份有限公司 一种与铸坯质量优化匹配的红送热装方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5502881A (en) * 1993-08-23 1996-04-02 Gaydoul; Juergen Apparatus for descaling substantially flat surfaces of hot rolled stock
US5542165A (en) * 1993-05-17 1996-08-06 Danieli & C. Officine Meccaniche Spa Line to produce strip and/or sheet
US5771957A (en) * 1993-12-03 1998-06-30 Mannesmann Aktiengesellschaft Device for the continuous casting of steel

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JPS59220262A (ja) * 1983-05-31 1984-12-11 Nisshin Steel Co Ltd マルテンサイト系ステンレス鋼の連続鋳造法
ATE158729T1 (de) 1992-07-31 1997-10-15 Danieli Off Mecc Wasser verwendende entzunderungsvorrichtung
DE4328303C2 (de) * 1992-12-23 1997-02-13 Juergen Gaydoul Einrichtung zum Entzundern von warmem Walzgut
JP2845073B2 (ja) * 1993-01-29 1999-01-13 株式会社日立製作所 熱間圧延設備及び鋳造熱間圧延連続設備
AT398396B (de) 1993-02-16 1994-11-25 Voest Alpine Ind Anlagen Verfahren zum herstellen eines bandes, vorstreifens oder einer bramme
US5697241A (en) * 1993-08-23 1997-12-16 Voest-Alpine Industrieanlagenbau Gmbh Rolling arrangement
IT1267916B1 (it) * 1994-03-31 1997-02-18 Danieli Off Mecc Procedimento per la produzione di nastro partendo da bramme sottili e relativo impianto
JP3174457B2 (ja) * 1994-05-17 2001-06-11 株式会社日立製作所 連鋳直結熱間圧延設備およびその圧延方法
AT409227B (de) * 1998-08-17 2002-06-25 Voest Alpine Ind Anlagen Verfahren und anlage zur herstellung von warmgewalztem stahlband aus einer stahlschmelze
DE10143868A1 (de) * 2001-09-07 2003-03-27 Sms Demag Ag Brammenreinigung vor dem Rollenherdofen einer Mini-Mill

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5542165A (en) * 1993-05-17 1996-08-06 Danieli & C. Officine Meccaniche Spa Line to produce strip and/or sheet
US5502881A (en) * 1993-08-23 1996-04-02 Gaydoul; Juergen Apparatus for descaling substantially flat surfaces of hot rolled stock
US5771957A (en) * 1993-12-03 1998-06-30 Mannesmann Aktiengesellschaft Device for the continuous casting of steel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11103907B2 (en) 2016-03-18 2021-08-31 Sms Group Gmbh Device and method for descaling a workpiece in motion
EP4186615A1 (de) * 2021-11-24 2023-05-31 SMS Group GmbH Verfahren zum herstellen eines giessstrangs

Also Published As

Publication number Publication date
ES2389860T3 (es) 2012-11-02
BRPI0621300A2 (pt) 2011-07-05
MX2008009949A (es) 2009-01-16
AU2006337463A1 (en) 2007-08-09
CA2640751A1 (en) 2007-08-09
CN101410198B (zh) 2011-08-10
EG25282A (en) 2011-12-05
EP1981660B1 (de) 2012-07-04
RU2414978C2 (ru) 2011-03-27
AU2006337463A2 (en) 2008-11-06
AR059290A1 (es) 2008-03-26
KR20080106891A (ko) 2008-12-09
AU2006337463B2 (en) 2012-04-05
TW200732060A (en) 2007-09-01
CN101410198A (zh) 2009-04-15
CA2640751C (en) 2013-03-12
EP1981660A1 (de) 2008-10-22
RU2008135453A (ru) 2010-03-10
JP2009525182A (ja) 2009-07-09
ZA200805313B (en) 2009-09-30
UA95100C2 (ru) 2011-07-11
WO2007087886A1 (de) 2007-08-09
TWI381894B (zh) 2013-01-11
DE102006004688A1 (de) 2007-08-16

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Legal Events

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AS Assignment

Owner name: SMS DEMAG AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BILGEN, CHRISTIAN;BOCHER, TILMANN;HENNIG, WOLFGANG;AND OTHERS;SIGNING DATES FROM 20080627 TO 20081007;REEL/FRAME:021997/0295

Owner name: HERMETIK HYDRAULIK AB, SWEDEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BILGEN, CHRISTIAN;BOCHER, TILMANN;HENNIG, WOLFGANG;AND OTHERS;SIGNING DATES FROM 20080627 TO 20081007;REEL/FRAME:021997/0295

AS Assignment

Owner name: SMS SIEMAG AKTIENGESELLSCHAFT, GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:SMS DEMAG AG;REEL/FRAME:023725/0342

Effective date: 20090325

STCB Information on status: application discontinuation

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