EP0286862A1 - Procédé pour fabriquer une bande d'acier - Google Patents

Procédé pour fabriquer une bande d'acier Download PDF

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Publication number
EP0286862A1
EP0286862A1 EP88104297A EP88104297A EP0286862A1 EP 0286862 A1 EP0286862 A1 EP 0286862A1 EP 88104297 A EP88104297 A EP 88104297A EP 88104297 A EP88104297 A EP 88104297A EP 0286862 A1 EP0286862 A1 EP 0286862A1
Authority
EP
European Patent Office
Prior art keywords
strand
thickness
mold
steel
casting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88104297A
Other languages
German (de)
English (en)
Other versions
EP0286862B1 (fr
Inventor
Erich Dr.-Ing. Höffken
Hermann Dipl.-Ing. Lax
Günter Dipl.-Ing. Pietzko
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.)
Thyssen Stahl AG
Original Assignee
Thyssen Stahl 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25854629&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0286862(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE19873712537 external-priority patent/DE3712537A1/de
Application filed by Thyssen Stahl AG filed Critical Thyssen Stahl AG
Priority to AT88104297T priority Critical patent/ATE75977T1/de
Publication of EP0286862A1 publication Critical patent/EP0286862A1/fr
Application granted granted Critical
Publication of EP0286862B1 publication Critical patent/EP0286862B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21B1/46—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
    • 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
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • 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
    • B21B2201/00—Special rolling modes
    • B21B2201/18—Vertical rolling pass lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/04—Thickness, gauge

Definitions

  • the invention relates to a method and a plant for producing a steel strip with a thickness of 2 to 25 mm by casting a steel strand with a thickness of less than 100 mm and then rolling the steel out of the casting heat, the cast strand having a cross-sectional reduction causing stretching in is subjected to at least one stitch.
  • the processes used in practice for the production of hot-rolled steel strip are generally based on a continuous cast slab, which, after it has completely solidified, is heated again to the rolling temperature and reduced in thickness in several passes and rolled out to form the strip. Because of the considerable thickness of the slabs used up to new roll stands are required for this. Plants for the application of such a method entail high investment costs because, on the one hand, the plants require a correspondingly large continuous casting plant, on the other hand, they require a multi-stand hot strip mill, the roughing stands of which have to be correspondingly compact due to the thickness of the slabs to be rolled out.
  • the measures according to the invention result in a dense, void-free strand which is considerably reduced in thickness compared to the steel strand leaving the mold and which, over its entire cross section, also has a fine-grained casting structure, as is otherwise the case with a continuously cast steel strand only in the surface near the edge occurs.
  • the various parameters for casting the steel strand on the one hand and for reducing the thickness of the steel strand on the other hand are matched to one another such that the strand shells are sufficiently resistant to withstand the compression of the steel strand without breakthroughs.
  • steel strands When the not yet solidified steel strand of 40 to 50 mm is compressed, steel strands are obtained which have a thickness of 10 to 20 mm. For some applications, such thin strips can already be used without the need for substantial deformation during rolling. A degree of deformation of about 5% to improve the surface quality (skin pass) can be sufficient. After appropriate cooling, the strips, which are still slightly deformed in this way, can be coiled.
  • the invention provides for the reduced-thickness cast strand to be cooled to a temperature in the range from 1000 to 1200 ° by spraying a cooling medium onto the cast strand and cooling the cast strand in this way using the casting heat in at least one stitch a degree of deformation of 5 to 85% is rolled out into a strip. Because of this The smallest final dimensions of up to approximately 2 mm can be rolled out.
  • the application of the method according to the invention for the production of steel strips even of such smallest thicknesses is cost-effective since the production method does not require large plants with holding furnaces and many roll stands with the corresponding energy requirements.
  • the object is achieved by a system consisting of a continuous casting plant with a funnel-shaped, oscillating mold with cooled walls, and a deformation device for the strand arranged at the mold outlet.
  • a cooling device and the cooling device are preferably followed by a roll stand after the deformation device.
  • the steel strand should be given a profile corresponding to the thickness profile of the finished strip when compressed. This measure is important for the method according to the invention, because basic profile changes are not possible in a simple manner when a strip is rolled out.
  • the cast steel strand has a rectangular cross-sectional shape with convexly rounded narrow sides or an oval cross-sectional shape. This design ensures that a strand shell with a uniform thickness is formed during solidification, so that when the steel strand is compressed after exiting the mold, neither cracks in the edge area nor in the deformation device Irregularities occur on the strand surface.
  • the casting speed v g and / or the cooling intensity of the mold is controlled in such a way that the cast steel strand has a strand shell with a thickness of 5 to 10 mm when it emerges from the mold.
  • the cooling effective length 1 k (m) of the mold is dimensioned such that the condition 0.05.
  • v g (m / min) less than or equal to 1 k less than or equal to 1 m is satisfied, the value 0.05 being a dimensionally dependent component. Under this condition, the solidifying strand is on average sufficient heat, for example withdrawn.
  • the cooling should be so intensive that the inner surface temperature of the mold remains below 400 ° C, in particular between 200 and 400 ° C. In this case it is ensured that a sufficiently thick steel strand is obtained for further processing even after the cast steel strand has been compressed.
  • a strand shell of the mentioned thickness is also resistant enough to withstand the forces occurring in the material when the cast strand is compressed without the formation of cracks.
  • the cast steel strand is reduced in thickness by up to 75% immediately after it leaves the mold.
  • a greater reduction in the strand thickness at this point should, however, be avoided, because otherwise such large tensile forces must be applied when pulling the strand out of the shaping device that it leads to the formation of There may be cracks in the strand surface, which cannot be welded again even if the strand is deformed further.
  • a deformation device 3 by means of which the strand is compressed to a thickness of less than 25 mm, in particular 10-20 mm.
  • the shaping device consists, for example, of cooled plates which continue the broad sides of the mold 2 or a corresponding arrangement of driven pull-out rollers 3a, which are adjustable against one another by means of hydraulic cylinders 3b for compressing the cast strand 10.
  • support rollers determining the profile should be assigned to the narrow sides.
  • the diameter d of the pull-out rollers 3a should be between 0.5 m and 1 m, while the distance D of the beginning of the area of attack from the lower edge of the mold 2 should be less than 0.5 m. If a strip profile with elevation, for example in the middle of the strip, is required for further processing, the bales of the pull-out rollers can have a corresponding contour. A strip with such a profile promotes further processing, for example in a cold rolling mill. However, pull-out rollers with a different profile, for example those with bottle-shaped bales, can also be used.
  • the pull-out rollers 3a are followed by a cooling device 4, which can consist of ribbed or lattice-shaped cooled plates 4a.
  • a cooling device which can consist of ribbed or lattice-shaped cooled plates 4a.
  • cooling liquid is sprayed from nozzles 4b between the rods or grids of the plates 4a onto the solidifying strand shell.
  • the cooling device 4 is immediately followed by at least one roll stand 5 which rolls out the cast strand 13.
  • the thickness of the compressed strand is reduced by 5-85%, that is, in the case of a 10 mm strand, the thickness is reduced to a minimum thickness of about 2 mm using the casting heat.
  • a thickness measuring device 12 is arranged behind the first roll stand 5 and determines the thickness profile of the rolled strand 10a over its entire width. Dependent on The cooling device 4 arranged in front of the roll stand 5 is controlled by the thickness profile determined at this point.
  • deflection rollers 6, a further roll stand 7, a further cooling device 8, a pair of scissors 9 and a reel 11 can be provided for winding up the rolled strip 10b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Coating With Molten Metal (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Belt Conveyors (AREA)
  • Ropes Or Cables (AREA)
EP88104297A 1987-04-13 1988-03-18 Procédé pour fabriquer une bande d'acier Expired - Lifetime EP0286862B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88104297T ATE75977T1 (de) 1987-04-13 1988-03-18 Verfahren zum herstellen eines stahlbandes.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3712537 1987-04-13
DE19873712537 DE3712537A1 (de) 1987-04-13 1987-04-13 Verfahren zum herstellen eines stahlbandes
DE3723543 1987-07-16
DE3723543 1987-07-16

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP89104899.3 Division-Into 1988-03-18

Publications (2)

Publication Number Publication Date
EP0286862A1 true EP0286862A1 (fr) 1988-10-19
EP0286862B1 EP0286862B1 (fr) 1992-05-13

Family

ID=25854629

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89104899A Expired - Lifetime EP0326190B1 (fr) 1987-04-13 1988-03-18 Installation pour fabriquer un feuillard d'acier ayant une épaisseur située entre 2 et 25 mm
EP88104297A Expired - Lifetime EP0286862B1 (fr) 1987-04-13 1988-03-18 Procédé pour fabriquer une bande d'acier

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP89104899A Expired - Lifetime EP0326190B1 (fr) 1987-04-13 1988-03-18 Installation pour fabriquer un feuillard d'acier ayant une épaisseur située entre 2 et 25 mm

Country Status (8)

Country Link
US (2) US4951734A (fr)
EP (2) EP0326190B1 (fr)
JP (1) JP2738934B2 (fr)
AT (2) ATE75977T1 (fr)
BR (1) BR8801733A (fr)
CA (1) CA1311904C (fr)
DE (2) DE3871125D1 (fr)
ES (2) ES2032620T3 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3818077A1 (de) * 1988-05-25 1989-11-30 Mannesmann Ag Verfahren zum kontinuierlichen giesswalzen
DE3840812A1 (de) * 1988-05-26 1990-04-05 Mannesmann Ag Verfahren und anlage zur kontinuierlichen herstellung von stahlband oder stahlblech nach dem stranggussverfahren
EP0603598A1 (fr) * 1992-12-23 1994-06-29 Thyssen Stahl Aktiengesellschaft Méthode de production d'une bande d'acier par coulée d'un lingot suivie d'un laminage
EP0614714A1 (fr) * 1993-03-10 1994-09-14 Sms Schloemann-Siemag Aktiengesellschaft Machine pour la coulée continue de brames minces en acier
CN1039290C (zh) * 1991-09-19 1998-07-29 Sms舒路曼-斯玛公司 制造钢带的方法和设备
EP1108484A1 (fr) * 1999-12-15 2001-06-20 SMS Demag AG Procédé pour la modification du format de la section d'une barre sous la lingotière d'une installation de coulée continue
DE10058205B4 (de) * 1999-12-01 2004-02-05 Voest-Alpine Industrieanlagenbau Gmbh & Co Verfahren zum Stahl-Stranggießen
WO2007039483A1 (fr) * 2005-09-22 2007-04-12 Danieli & C. Officine Meccaniche S.P.A. Procede et installation de production de bande metallique
DE102008020412A1 (de) 2007-08-24 2009-02-26 Sms Demag Ag Verfahren und Vorrichtung zum Herstellen eines Metallbandes durch Gießwalzen
DE102008003222A1 (de) 2007-09-13 2009-03-19 Sms Demag Ag Kompakte flexible CSP-Anlage für Endlos-, Semi-Endlos- und Batchbetrieb
DE102009037278A1 (de) 2009-08-12 2011-02-17 Sms Siemag Ag Vorrichtung und Verfahren zum Herstellen eines dünnen Warmbandes
RU2453393C2 (ru) * 2007-03-21 2012-06-20 Даньели Энд К. Оффичине Мекканике С.П.А. Способ и установка для изготовления металлической полосы
US8365806B2 (en) 2005-12-16 2013-02-05 Sms Siemag Aktiengesellschaft Method and device for producing a metal strip by continuous casting and rolling

Families Citing this family (32)

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JP2726919B2 (ja) * 1988-05-26 1998-03-11 マンネスマン・アクチエンゲゼルシャフト 連続鋳造により帯鋼又は板鋼を連続製造する方法及び装置
DE3823861A1 (de) * 1988-07-14 1990-01-18 Thyssen Stahl Ag Verfahren und anlage zum herstellen eines stahlbandes mit einer dicke von weniger als 10 mm
ATE81042T1 (de) * 1988-07-14 1992-10-15 Thyssen Stahl Ag Verfahren zum herstellen eines stahlbandes mit einer dicke von weniger als 10 mm.
DE3904989A1 (de) * 1989-02-18 1990-08-23 Schloemann Siemag Ag Anlage zur herstellung von stahlband
NL9100911A (nl) * 1991-03-22 1992-10-16 Hoogovens Groep Bv Inrichting en werkwijze voor het vervaardigen van warmgewalst staal.
US5488987A (en) * 1991-10-31 1996-02-06 Danieli & C. Officine Meccaniche Spa Method for the controlled pre-rolling of thin slabs leaving a continuous casting plant, and relative device
AT398396B (de) * 1993-02-16 1994-11-25 Voest Alpine Ind Anlagen Verfahren zum herstellen eines bandes, vorstreifens oder einer bramme
CN1048930C (zh) * 1993-08-12 2000-02-02 冶金工业部钢铁研究总院 超小断面铸坯连铸装置
DE4338805C2 (de) * 1993-11-12 1995-10-26 Schloemann Siemag Ag Verfahren und Vorrichtung zum Betreiben einer Stranggießanlage
KR960706382A (ko) * 1993-12-01 1996-12-09 퀼 · 노르트만 강 스트립용 연속 주조 및 압연 플랜트 및 그 플랜트용 제어 시스템(continuous casting and rolling plant for steel strip and a control system for such a plant)
US6044895A (en) * 1993-12-21 2000-04-04 Siemens Aktiengesellschaft Continuous casting and rolling system including control system
CN1046446C (zh) * 1994-04-04 1999-11-17 新日本制铁株式会社 双辊连铸方法
TW297788B (fr) * 1994-12-15 1997-02-11 Sumitomo Metal Ind
US5620045A (en) * 1995-04-24 1997-04-15 Gerding; Charles C. Continuous casting mold formed of plate elements
DE19519560A1 (de) * 1995-05-27 1996-11-28 Schloemann Siemag Ag Verfahren zur Herstellung von Dünnbrammen oder Stahlbändern
DE19745445C1 (de) * 1997-10-15 1999-07-08 Thyssenkrupp Stahl Ag Verfahren zur Herstellung von kornorientiertem Elektroblech mit geringem Ummagnetisierungsverlust und hoher Polarisation
JP3726506B2 (ja) * 1998-05-28 2005-12-14 Ｊｆｅスチール株式会社 鋼片の水冷方法
US6374901B1 (en) * 1998-07-10 2002-04-23 Ipsco Enterprises Inc. Differential quench method and apparatus
DE19915269A1 (de) * 1999-04-03 2000-10-26 Sms Demag Ag Verfahren zur Bestimmung der Reibung zwischen Strangschale und Kokille beim Stranggießen
AT410522B (de) * 2001-05-07 2003-05-26 Hulek Anton Verfahren und stranggiessanlage zum vertikalen stranggiessen eines stahlbandes
DE10302265A1 (de) * 2003-01-22 2004-07-29 Sms Demag Ag Verfahren und Vorrichtung zur Erzeugung von stranggegossenen Stahlbrammen
DE10339766A1 (de) * 2003-08-27 2005-04-07 Siemens Ag Verfahren und Einrichtung zur Steuerung einer Anlage zur Herstellung von Stahl
PT1868748E (pt) * 2005-04-07 2008-12-12 Giovanni Arvedi Processo e sistema de fabrico de chapas e bandas metálicas sem solução de continuidade entre a moldagem contínua e a laminagem
CN100438997C (zh) * 2005-05-20 2008-12-03 中冶东方工程技术有限公司 紧凑型中宽带钢生产工艺
CN100396391C (zh) * 2005-09-01 2008-06-25 中冶东方工程技术有限公司 薄带钢铸轧生产工艺
ITRM20050523A1 (it) 2005-10-21 2007-04-22 Danieli Off Mecc Processo e impianto per la produzione di nastro metallico.
US20070199627A1 (en) * 2006-02-27 2007-08-30 Blejde Walter N Low surface roughness cast strip and method and apparatus for making the same
US8562766B2 (en) 2006-02-27 2013-10-22 Nucor Corporation Method for making a low surface roughness cast strip
CN101596546B (zh) * 2009-07-02 2013-04-17 盐城市联鑫钢铁有限公司 一种应用在钢铁生产中的轧钢生产工艺
CN102172816B (zh) * 2011-01-14 2013-02-20 冷水江钢铁有限责任公司 一种高强度热轧盘螺的生产方法
CN103934425A (zh) * 2014-04-18 2014-07-23 中国重型机械研究院股份公司 一种液压动态二冷水幅切控制系统
CN104148387B (zh) * 2014-07-11 2016-05-04 中冶东方工程技术有限公司 一种连铸热芯轧制方法

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DE3306537A1 (de) * 1982-02-25 1983-09-08 Sumitomo Heavy Industries, Ltd., Tokyo Strangfuehrung fuer eine stranggussmaschine

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3818077A1 (de) * 1988-05-25 1989-11-30 Mannesmann Ag Verfahren zum kontinuierlichen giesswalzen
DE3840812A1 (de) * 1988-05-26 1990-04-05 Mannesmann Ag Verfahren und anlage zur kontinuierlichen herstellung von stahlband oder stahlblech nach dem stranggussverfahren
CN1039290C (zh) * 1991-09-19 1998-07-29 Sms舒路曼-斯玛公司 制造钢带的方法和设备
EP0603598A1 (fr) * 1992-12-23 1994-06-29 Thyssen Stahl Aktiengesellschaft Méthode de production d'une bande d'acier par coulée d'un lingot suivie d'un laminage
DE4243857C1 (de) * 1992-12-23 1994-07-28 Thyssen Stahl Ag Verfahren zum Herstellen eines Stahlbandes durch Gießen eines Stranges und anschließendes Walzen
EP0614714A1 (fr) * 1993-03-10 1994-09-14 Sms Schloemann-Siemag Aktiengesellschaft Machine pour la coulée continue de brames minces en acier
DE10058205C5 (de) * 1999-12-01 2009-06-18 Voest-Alpine Industrieanlagenbau Gmbh & Co. Kg Verfahren zum Stahl-Stranggießen
DE10058205B4 (de) * 1999-12-01 2004-02-05 Voest-Alpine Industrieanlagenbau Gmbh & Co Verfahren zum Stahl-Stranggießen
EP1108484A1 (fr) * 1999-12-15 2001-06-20 SMS Demag AG Procédé pour la modification du format de la section d'une barre sous la lingotière d'une installation de coulée continue
WO2007039483A1 (fr) * 2005-09-22 2007-04-12 Danieli & C. Officine Meccaniche S.P.A. Procede et installation de production de bande metallique
US8365806B2 (en) 2005-12-16 2013-02-05 Sms Siemag Aktiengesellschaft Method and device for producing a metal strip by continuous casting and rolling
RU2453393C2 (ru) * 2007-03-21 2012-06-20 Даньели Энд К. Оффичине Мекканике С.П.А. Способ и установка для изготовления металлической полосы
DE102008020412A1 (de) 2007-08-24 2009-02-26 Sms Demag Ag Verfahren und Vorrichtung zum Herstellen eines Metallbandes durch Gießwalzen
DE102008003222A1 (de) 2007-09-13 2009-03-19 Sms Demag Ag Kompakte flexible CSP-Anlage für Endlos-, Semi-Endlos- und Batchbetrieb
DE102009037278A1 (de) 2009-08-12 2011-02-17 Sms Siemag Ag Vorrichtung und Verfahren zum Herstellen eines dünnen Warmbandes
WO2011018217A2 (fr) 2009-08-12 2011-02-17 Sms Siemag Aktiengesellschaft Dispositif et procédé de production d'un feuillard à chaud mince

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Publication number Publication date
US5058656A (en) 1991-10-22
EP0286862B1 (fr) 1992-05-13
DE3871125D1 (de) 1992-06-17
EP0326190B1 (fr) 1992-05-13
US4951734A (en) 1990-08-28
CA1311904C (fr) 1992-12-29
JPS63264250A (ja) 1988-11-01
ES2032620T3 (es) 1993-02-16
JP2738934B2 (ja) 1998-04-08
ATE75977T1 (de) 1992-05-15
EP0326190A3 (en) 1989-11-08
ATE75978T1 (de) 1992-05-15
DE3870970D1 (de) 1992-06-17
ES2031945T3 (es) 1993-01-01
BR8801733A (pt) 1988-11-16
EP0326190A2 (fr) 1989-08-02

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