EP2025432B2 - Procédé destiné à la production de produits allongés en acier par coulage en continu et laminage - Google Patents

Procédé destiné à la production de produits allongés en acier par coulage en continu et laminage Download PDF

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Publication number
EP2025432B2
EP2025432B2 EP07014841.6A EP07014841A EP2025432B2 EP 2025432 B2 EP2025432 B2 EP 2025432B2 EP 07014841 A EP07014841 A EP 07014841A EP 2025432 B2 EP2025432 B2 EP 2025432B2
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EP
European Patent Office
Prior art keywords
strand
mould
rolling
continuous casting
cast
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.)
Active
Application number
EP07014841.6A
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German (de)
English (en)
Other versions
EP2025432A1 (fr
EP2025432B1 (fr
Inventor
Franz Dr. Kawa
Adalbert Roehrig
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 Concast AG
Original Assignee
Concast 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38754538&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2025432(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Concast AG filed Critical Concast AG
Priority to EP07014841.6A priority Critical patent/EP2025432B2/fr
Priority to US12/670,445 priority patent/US20100276111A1/en
Priority to BRPI0814203A priority patent/BRPI0814203A8/pt
Priority to PCT/EP2008/005864 priority patent/WO2009015782A2/fr
Priority to CA2694755A priority patent/CA2694755C/fr
Priority to RU2010107172/02A priority patent/RU2484921C2/ru
Priority to CN200880100820.0A priority patent/CN102105244B/zh
Priority to KR1020107000773A priority patent/KR20100038195A/ko
Priority to JP2010517302A priority patent/JP2011504141A/ja
Publication of EP2025432A1 publication Critical patent/EP2025432A1/fr
Priority to ZA2010/00216A priority patent/ZA201000216B/en
Priority to JP2013166381A priority patent/JP5632942B2/ja
Publication of EP2025432B1 publication Critical patent/EP2025432B1/fr
Publication of EP2025432B2 publication Critical patent/EP2025432B2/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical

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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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/0406—Moulds with special profile
    • 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

Definitions

  • the invention relates to a method for producing long-steel products according to the preamble of claim 1.
  • the minimum intake speed at the inlet of the rolling train should under no circumstances be less than 4.2 m / min in order not to thermally overload the rollers due to the long contact time with the rolling stock.
  • the billet at the inlet of the mill train should have a suitable temperature for rolling both at the surface and in the core (1150-1250 ° C).
  • the surface temperature should be distributed as homogeneously as possible.
  • JP-A-01048609 there is disclosed a method of controlling the speed of a strand by transferring the cast strand directly to a rolling mill.
  • the speed in the continuous casting machine and the rolling train is controlled by, for example, the rolling speed is corrected when the current pull-out speed of the strand changes.
  • the disadvantage here is that the rolling speed can not be changed until the pull-out speed changes in the continuous casting machine.
  • the present invention has for its object to propose a method that allows a simpler plant configuration and a more cost-effective operation.
  • the billet and Vorblockstrlinde generated by rapid continuous casting can be fed directly to a rolling mill without additional heating.
  • the mold cavity of this Stranggiesskokillen has at the inlet end of the mold along a circumferential line of its cross section at least two peripheral portions which each limit a cross-sectional enlargement of the mold cavity relative to the corresponding peripheral portions of the mold cavity cross-section at the strand outlet end of the mold in the form of protrusions.
  • the arc heights of the bulges are reduced in strand running direction such that deforms during molding in the mold cavity strand shell during passage through the mold, and thereby a uniform cooling and shell growth or a homogeneous temperature distribution along the strand circumference is ensured, creating a direct introduction in the rolling mill permitting high continuous casting speed is possible.
  • the temperature conditions in the cast strand at the outlet of the casting plant for the introduction into the rolling train are suitable, if necessary, a temperature regulation can be provided, but no heating is necessary.
  • the circumferential line of an approximately circular mold cavity cross section is divided on the pouring side into at least three substantially equal circumferential sections and each of these peripheral sections has on the pouring side the cross sectional enlargement of the mold cavity as a bulge.
  • the arc heights of the bulges are reduced on all peripheral sections in the strand direction at least along a partial length of the mold cavity.
  • a continuous casting mold for the inventive Method has the circumferential line of a polygonal, preferably quadrangular cavity section on the pouring side between all corners of peripheral portions with cross-sectional enlargements of the mold cavity in the form of bulges and the heights of the bulges decrease on all peripheral sections in strand direction at least along a partial length of the mold cavity.
  • Fig.1 schematically shows the structure of a known continuous casting 10 with a ladle 1, an intermediate vessel 2 (Tundish), cooled with water mold 3, and a Strandumlenk noticed 6 for the strand 5, which pulled by means of rollers 6 'and bent into the horizontal. Thereafter, the strand 5 according to the invention is fed directly to a rolling train 20, which has a plurality of rolling units 21 with rolling rollers 22, which is not shown in detail since such rolling trains 20 or rolling mills are known.
  • a mold cavity 3 'of this mold 3 has at the inlet end of the mold along a circumferential line of its cross section at least two peripheral portions, each limiting a cross-sectional enlargement of the mold cavity 3' relative to the corresponding peripheral portions of the mold cavity cross-section at the strand outlet end of the mold 3 in the form of protrusions, which is not illustrated in detail.
  • the continuous casting speed of the strand 5 is at least 4.2 m / min in order not to exceed the allowable contact time between the strand and the rolls at the inlet of the rolling train and thereby not to shorten their durability unreasonable.
  • the temperature conditions at the outlet of the continuous casting plant 10 for the introduction into the rolling train are precisely adapted so that the rolling of the strand can be carried out in an optimal manner. At most, however, a passive temperature compensation, without external energy supply can be made.
  • the mold cavity cross section of the continuous casting mold is essentially formed as a four-round format.
  • This four-round format is based on a square or rectangle, but it is provided in the corners with relatively large radii. Strand exit side, these radii in the corner regions are advantageously approximately 20 to 40 mm at a length or width of the mold cavity cross-section of 120 to 180 mm.
  • an edge rounding of about 25 mm and the continuous casting speed of at least 5.2 m / min and correspondingly in a four-round format of 180 mm an edge rounding of about 40 mm and casting speed of at least 4.2 m / min could be provided.
  • a sliding closure 15 is provided for the purpose of accurate inflow control of the molten steel to be poured into the mold.
  • a regulation of the fill level of the melt in the mold 3 is carried out as a function of the inlet speed in the first stand (so-called master-slave operation), for a control device 13 and a level gauge 14 are provided in the mold 3. This regulation is intended to achieve an approximately constant filling level in the mold.
  • a refractory dip tube attached to the inflow control element and protruding into the mold is advantageous, so that the bath surface in the mold is as smooth as possible.
  • the cast billet strands form essentially a four-round format and their fillet is selected according to the format such that, at a sufficiently high casting speed, a strand is produced having a temperature distribution required for rolling, which can be directly rolled without any active reheating, i. the cast strands are fed endlessly to the rolling train without being cut into pieces.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)

Claims (4)

  1. Procédé de production de produits longs en acier par coulée continue d'acier en des barres de billette et laminage ensuite de ces barres de billette et de ces barres de bloom en produits longs, comme de l'acier en barre ou du fil, l'acier liquide étant versé dans une lingotière de coulée continue dans lequel la lingotière de coulée continue, d'un format carré ou rectangulaire à sommets arrondis de grand rayon ou d'un format sensiblement cercle circulaire, forme une empreinte de moulage ouverte des deux côtés qui, à l'extrémité du côté d'entrée, a le long d'une ligne de pourtour de sa section transversale au moins deux parties de pourtour qui délimitent, sous la forme de courbure, respectivement un agrandissement de la section transversale de l'empreinte par rapport aux parties de pourtour correspondantes de la section transversale de l'empreinte à l'extrémité du côté de la sortie de la barre de la lingotière et les hauteurs d'arc des courbures se rapetissent dans la direction de passage de la barre de manière à ce que, pendant la coulée, une coquille de coulée se formant dans l'empreinte se déforme lorsqu'elle passe dans la lingotière, les barres coulées de billette ou de bloom étant envoyées directement à un train de laminoir sans post-chauffage et la vitesse de coulée continue étant au moins de 4,2m/min, dans lequel, dans la busette (11) de coulée d'un récipient (2) intermédiaire se trouvant au-dessus de la lingotière (3) il y a un organe de régulation, de préférence une fermeture (15) à tiroir, en vue d'une régulation précise de l'acier fondu à couler dans la lingotière, une régulation de la hauteur du niveau de la masse fondue dans la lingotière 3 s'effectuant en fonction de la vitesse d'entrée dans la première cage de laminoir du train (20) de laminoir et l'organe de régulation étant régulé d'une manière correspondante.
  2. Procédé selon la revendication 1, caractérisé en ce que les barres de billette coulées forment sensiblement un format carré ou rectangulaire à sommets arrondis de grand rayon.
  3. Procédé selon la revendication 2, caractérisé en ce qu'on choisit l'arrondi dans le format carré ou rectangulaire à sommets arrondis de grand rayon conformément au format de manière à produire, pour une vitesse de coulée suffisamment grande, une barre ayant une répartition de température nécessaire pour le laminage qui, sans quelque post-chauffage actif que ce soit, peut être laminée directement.
  4. Procédé selon la revendication 1, caractérisé en ce que les barres de billette coulées sont sensiblement circulaires.
EP07014841.6A 2007-07-27 2007-07-27 Procédé destiné à la production de produits allongés en acier par coulage en continu et laminage Active EP2025432B2 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
EP07014841.6A EP2025432B2 (fr) 2007-07-27 2007-07-27 Procédé destiné à la production de produits allongés en acier par coulage en continu et laminage
CN200880100820.0A CN102105244B (zh) 2007-07-27 2008-07-17 通过连铸连轧用于生产长条状钢产品的方法
JP2010517302A JP2011504141A (ja) 2007-07-27 2008-07-17 連続鋳造および圧延により鋼長尺製品を製造する方法
PCT/EP2008/005864 WO2009015782A2 (fr) 2007-07-27 2008-07-17 Procédé pour fabriquer des produits longs en acier par coulée continue et laminage
CA2694755A CA2694755C (fr) 2007-07-27 2008-07-17 Procede pour fabriquer des produits longs en acier par coulee continue et laminage
RU2010107172/02A RU2484921C2 (ru) 2007-07-27 2008-07-17 Способ получения стального длинномерного проката путем непрерывной разливки и прокатки
US12/670,445 US20100276111A1 (en) 2007-07-27 2008-07-17 Process for Producing Steel Long Products by Continuous Casting and Rolling
KR1020107000773A KR20100038195A (ko) 2007-07-27 2008-07-17 연속 캐스팅 및 롤링에 의해 긴 스틸 제품을 제조하기 위한 방법
BRPI0814203A BRPI0814203A8 (pt) 2007-07-27 2008-07-17 processo para produção de produtos longos de aço através de fundição e laminação contínuas
ZA2010/00216A ZA201000216B (en) 2007-07-27 2010-01-12 Process for producing steel long products by continuous casting and rolling
JP2013166381A JP5632942B2 (ja) 2007-07-27 2013-08-09 連続鋳造および圧延により鋼長尺製品を製造する方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07014841.6A EP2025432B2 (fr) 2007-07-27 2007-07-27 Procédé destiné à la production de produits allongés en acier par coulage en continu et laminage

Publications (3)

Publication Number Publication Date
EP2025432A1 EP2025432A1 (fr) 2009-02-18
EP2025432B1 EP2025432B1 (fr) 2014-03-19
EP2025432B2 true EP2025432B2 (fr) 2017-08-30

Family

ID=38754538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07014841.6A Active EP2025432B2 (fr) 2007-07-27 2007-07-27 Procédé destiné à la production de produits allongés en acier par coulage en continu et laminage

Country Status (10)

Country Link
US (1) US20100276111A1 (fr)
EP (1) EP2025432B2 (fr)
JP (2) JP2011504141A (fr)
KR (1) KR20100038195A (fr)
CN (1) CN102105244B (fr)
BR (1) BRPI0814203A8 (fr)
CA (1) CA2694755C (fr)
RU (1) RU2484921C2 (fr)
WO (1) WO2009015782A2 (fr)
ZA (1) ZA201000216B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
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CN103480647B (zh) * 2013-09-18 2016-03-23 陕西钢铁集团有限公司 一种无加热低温直接轧制小方坯生产钢筋的装置及其生产方法
CN104923752B (zh) * 2015-07-08 2017-04-26 南京工业大学 一种钛或钛合金的连铸技术和设备
AT519277A1 (de) * 2016-11-03 2018-05-15 Primetals Technologies Austria GmbH Gieß-Walz-Verbundanlage
CN114932146A (zh) * 2022-06-30 2022-08-23 浙江青山钢铁有限公司 一种超级双相不锈钢线材的轧制方法
EP4374986A1 (fr) 2022-11-25 2024-05-29 SMS Concast AG Installation de coulée continue, en particulier pour la coulée de produits longs métallurgiques, ainsi qu'une buse de coulée

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JPS5747509A (en) † 1980-09-05 1982-03-18 Kikai Syst Shinko Kyokai Controlling method for speed of direct rolling mill united with continuous casting machine
EP0655288A1 (fr) † 1993-11-25 1995-05-31 Katsuhiko Yamada Procédé de coulée continue et procédé de coulée continue/laminage d'acier
EP0931608A1 (fr) † 1997-12-24 1999-07-28 EUROPA METALLI S.p.A. Lingotière de coulée continue
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EP1547705A1 (fr) † 2003-12-27 2005-06-29 Concast Ag Procédé pour la coulée continue des billettes et blooms et cavité d'une lingotière pour la coulée continue
WO2007010565A1 (fr) † 2005-07-19 2007-01-25 Giovanni Arvedi Processus et installation afferente pour fabriquer des produits allonges en acier sans interruption

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EP0655288A1 (fr) † 1993-11-25 1995-05-31 Katsuhiko Yamada Procédé de coulée continue et procédé de coulée continue/laminage d'acier
EP0931608A1 (fr) † 1997-12-24 1999-07-28 EUROPA METALLI S.p.A. Lingotière de coulée continue
WO2003070399A1 (fr) † 2002-02-22 2003-08-28 Sms Demag Aktiengesellschaft Procede et dispositif de coulee continue et de faconnage direct d'un metal, notamment d'une barre de coulee en materiaux a base d'acier
EP1547705A1 (fr) † 2003-12-27 2005-06-29 Concast Ag Procédé pour la coulée continue des billettes et blooms et cavité d'une lingotière pour la coulée continue
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Also Published As

Publication number Publication date
RU2010107172A (ru) 2011-09-10
EP2025432A1 (fr) 2009-02-18
BRPI0814203A2 (pt) 2015-01-27
ZA201000216B (en) 2011-04-28
CA2694755A1 (fr) 2009-02-05
JP2013223887A (ja) 2013-10-31
KR20100038195A (ko) 2010-04-13
JP5632942B2 (ja) 2014-11-26
US20100276111A1 (en) 2010-11-04
CN102105244A (zh) 2011-06-22
JP2011504141A (ja) 2011-02-03
WO2009015782A2 (fr) 2009-02-05
EP2025432B1 (fr) 2014-03-19
BRPI0814203A8 (pt) 2018-12-18
WO2009015782A3 (fr) 2009-05-28
RU2484921C2 (ru) 2013-06-20
CN102105244B (zh) 2015-09-09
CA2694755C (fr) 2015-02-24

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