EP2025432A1 - 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
EP2025432A1
EP2025432A1 EP07014841A EP07014841A EP2025432A1 EP 2025432 A1 EP2025432 A1 EP 2025432A1 EP 07014841 A EP07014841 A EP 07014841A EP 07014841 A EP07014841 A EP 07014841A EP 2025432 A1 EP2025432 A1 EP 2025432A1
Authority
EP
European Patent Office
Prior art keywords
mold
strand
casting
steel
strands
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
EP07014841A
Other languages
German (de)
English (en)
Other versions
EP2025432B1 (fr
EP2025432B2 (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
Family has litigation
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(A1) "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 RU2010107172/02A priority patent/RU2484921C2/ru
Priority to BRPI0814203A priority patent/BRPI0814203A8/pt
Priority to JP2010517302A priority patent/JP2011504141A/ja
Priority to KR1020107000773A priority patent/KR20100038195A/ko
Priority to US12/670,445 priority patent/US20100276111A1/en
Priority to CA2694755A priority patent/CA2694755C/fr
Priority to PCT/EP2008/005864 priority patent/WO2009015782A2/fr
Priority to CN200880100820.0A priority patent/CN102105244B/zh
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
Active legal-status Critical Current
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 process for the production of steel long products according to the preamble of claim 1 and a continuous casting mold for the process.
  • 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.
  • 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 G fauxstrang at the outlet of the casting plant for the introduction into the rolling mill 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 on the pouring side is subdivided into at least three substantially equal circumferential sections and each of these peripheral sections exhibits 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.
  • the circumferential line of a polygonal, preferably quadrangular cavity section on the pouring side between all corners on peripheral portions with cross-sectional enlargements of the mold cavity in the form of protrusions and the heights of the bulges decrease in size on all peripheral portions in strand direction at least along a partial length of the mold cavity.
  • the inventive method for producing long-steel products in which the billets and Vorblockstrlinde generated in the continuous casting mold directly - fed without additional heating - a rolling train and there rolled into long products, allows a simple system configuration and a cost-effective operation.
  • 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 rolls 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 having a cross-sectional enlargement of the mold cavity 3' relative to the corresponding peripheral portions of Form cavity gap at the strand outlet end of the mold 3 in the form of bulges limit, which is not illustrated in detail.
  • the continuous casting speed of the strand 5 is advantageously at least 4.2 m / min in order not to exceed the permissible 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
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
CA2694755A CA2694755C (fr) 2007-07-27 2008-07-17 Procede pour fabriquer des produits longs en acier par coulee continue 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
KR1020107000773A KR20100038195A (ko) 2007-07-27 2008-07-17 연속 캐스팅 및 롤링에 의해 긴 스틸 제품을 제조하기 위한 방법
US12/670,445 US20100276111A1 (en) 2007-07-27 2008-07-17 Process for Producing Steel Long Products by Continuous Casting and Rolling
RU2010107172/02A RU2484921C2 (ru) 2007-07-27 2008-07-17 Способ получения стального длинномерного проката путем непрерывной разливки и прокатки
PCT/EP2008/005864 WO2009015782A2 (fr) 2007-07-27 2008-07-17 Procédé pour fabriquer des produits longs en acier par coulée continue et laminage
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 true EP2025432A1 (fr) 2009-02-18
EP2025432B1 EP2025432B1 (fr) 2014-03-19
EP2025432B2 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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* 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
CN114932146B (zh) * 2022-06-30 2024-09-10 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
CN116274367A (zh) * 2023-02-24 2023-06-23 首钢集团有限公司 一种直轧工艺制备建筑用钢的方法
CN118122974B (zh) * 2024-05-06 2024-12-31 兴化市恒源特钢有限公司 一种特钢连铸成型装置

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JPS6448609A (en) * 1987-08-19 1989-02-23 Hitachi Ltd Method for controlling speed
EP0498296A2 (fr) * 1991-02-06 1992-08-12 Concast Standard Ag Coquille pour la coulée continue de métaux notamment d'acier
EP1466682A1 (fr) * 2003-03-28 2004-10-13 SMS Demag Aktiengesellschaft Dispositif de coulee continue de metaux fluides comportant une coquille pour la coulee continue de metaux liquides, en particulier d'acier liquide
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
CA2694755C (fr) 2015-02-24
JP2013223887A (ja) 2013-10-31
CN102105244B (zh) 2015-09-09
BRPI0814203A8 (pt) 2018-12-18
EP2025432B1 (fr) 2014-03-19
CN102105244A (zh) 2011-06-22
CA2694755A1 (fr) 2009-02-05
RU2010107172A (ru) 2011-09-10
JP5632942B2 (ja) 2014-11-26
WO2009015782A2 (fr) 2009-02-05
US20100276111A1 (en) 2010-11-04
ZA201000216B (en) 2011-04-28
KR20100038195A (ko) 2010-04-13
BRPI0814203A2 (pt) 2015-01-27
WO2009015782A3 (fr) 2009-05-28
EP2025432B2 (fr) 2017-08-30
JP2011504141A (ja) 2011-02-03
RU2484921C2 (ru) 2013-06-20

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