US20100276111A1 - Process for Producing Steel Long Products by Continuous Casting and Rolling - Google Patents

Process for Producing Steel Long Products by Continuous Casting and Rolling Download PDF

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Publication number
US20100276111A1
US20100276111A1 US12/670,445 US67044508A US2010276111A1 US 20100276111 A1 US20100276111 A1 US 20100276111A1 US 67044508 A US67044508 A US 67044508A US 2010276111 A1 US2010276111 A1 US 2010276111A1
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US
United States
Prior art keywords
mould
continuous casting
strand
process according
permanent mould
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
US12/670,445
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English (en)
Inventor
Franz Kawa
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
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
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=US20100276111(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Assigned to SMS CONCAST AG reassignment SMS CONCAST AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KAWA, FRANZ
Publication of US20100276111A1 publication Critical patent/US20100276111A1/en
Abandoned legal-status Critical Current

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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 producing steel long products according to the preamble to Claim 1 and to a continuous casting permanent mould for the process.
  • the minimum feed speed at the inlet of the roll train should under no circumstances come below 4.2 m/min so as to not overload the rollers thermally as a result of the long contact time with the rolling stock.
  • the billet at the inlet of the roll train should have a temperature suitable for rolling, both on the surface and in the core (1150-1250° C.).
  • the surface temperature should be distributed as homogeneously as possible.
  • the object forming the basis of the present invention is to propose a process which enables a simpler plant design and more cost-effective operation.
  • the curvature heights of the bulges decrease in the direction of travel of the strand such that during the casting operation a strand shell forming in the mould cavity deforms upon passing through the permanent mould, and in this way even cooling and shell growth and homogeneous temperature distribution is guaranteed along the strand circumference, by means of which a high continuous casting speed allowing direct introduction into the roll train is possible.
  • the temperature ratios in the casting strand on the outlet of the casting plant are also suitable for introduction into the roll train, and at all events temperature regulation can be provided, but no heating is required.
  • the circumferential line of an approximately round mould cavity cross-section is divided on the pouring in side into at least three circumferential sections of substantially the same size, and each of these circumferential sections has on the pouring in side the cross-sectional enlargement of the mould cavity as a bulge.
  • the curvature heights of the bulges decrease on all of the circumferential sections in the direction of travel of the strand, at least along a partial length of the mould cavity.
  • the circumferential line of a polygonal, preferably quadrangular mould cavity cross-section has on the pouring side between all of the corners circumferential sections with cross-sectional enlargements of the mould cavity in the form of bulges, and the curvature heights of the bulges decrease on all of the circumferential sections in the direction of travel of the strand, at least of a partial length of the mould cavity.
  • the process according to the invention for producing steel long products wherein the billet and bloom strands produced in the continuous casting permanent mould are fed directly—without any additional heating—to a roll train and can be rolled here into long products, enables a simple plant design and cost-effective operation.
  • FIG. 1 is a diagrammatic illustration of a continuous casting plant working according to the process according to the invention, having a roll train.
  • FIG. 1 shows diagrammatically the structure of a continuous casting plant 10 known in its own right, having a casting ladle 1 , an intermediate vessel 2 (tundish), a permanent mould 3 cooled with water, and a strand deflection device 6 for the strand 5 which is drawn out by means of rollers 6 ′ and bent into the horizontal.
  • the strand 5 is fed according to the invention directly to a roll train 20 which has a number of rolling units 21 having rolling rollers 22 , not shown in any further detail because this type of roll train 20 and rolling mill are known.
  • a mould cavity 3 ′ of this permanent mould 3 has on the end of the permanent mould on the pouring in side, along a circumferential line of its cross-section, at least two circumferential sections each of which define a cross-sectional enlargement of the mould cavity 3 ′ in relation to the corresponding circumferential sections of the mould cavity cross-section on the end of the permanent mould 3 on the side of the strand outlet in the form of bulges, the latter not being illustrated in any greater detail.
  • the continuous casting speed of the strand 5 is advantageously at least 4.2 m/min so as not to exceed the admissible contact time between the strand and the rolls at the inlet of the roll train, and thus not unreasonably shortening the service life of the latter.
  • the temperature ratios on the outlet of the continuous casting plant 10 for introduction into the roll train are adjusted precisely so that the rolling of the strand can take place optimally. At all events, however, passive temperature equalisation can be implemented without supplying any external energy.
  • the mould cavity cross-section of the continuous casting permanent mould is formed substantially as a quadruple round format.
  • This quadruple round format is based upon a square or rectangle, being provided in the corner regions, however, with relatively large radii. On the outlet side of the strand these radii are in the corner regions advantageously approximately 20 to 40 mm with a length or width of the mould cavity cross-section of 120 to 180 mm.
  • a conventional regulating device preferably a slide closure 15 for the purpose of precise inflow regulation of the molten steel to be cast into the permanent mould.
  • Regulation of the filling level height of the molten mass in the permanent mould 3 is implemented dependently upon the inlet speed in the first rolling stand (so-called master/slave operation), for which a regulating device 13 and a filling level measuring device 14 are provided on the permanent mould 3 . With this regulation an approximately constant filling height should be achieved in the permanent mould.
  • a fireproof immersion pipe attached to the inflow regulating device and projecting into the permanent mould is advantageously provided so that the smoothest possible bath surface is produced in the permanent mould.
  • the cast billet strands form a substantially quadruple round format, and the rounding of the latter corresponding to the format is chosen such that with a sufficiently high casting speed a strand with temperature distribution required for the rolling is produced which can be directly rolled without any active subsequent heating, i.e. the cast strands are fed infinitely to the roll train without being divided into pieces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
US12/670,445 2007-07-27 2008-07-17 Process for Producing Steel Long Products by Continuous Casting and Rolling Abandoned US20100276111A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07014841.6 2007-07-27
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
PCT/EP2008/005864 WO2009015782A2 (fr) 2007-07-27 2008-07-17 Procédé pour fabriquer des produits longs en acier par coulée continue et laminage

Publications (1)

Publication Number Publication Date
US20100276111A1 true US20100276111A1 (en) 2010-11-04

Family

ID=38754538

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/670,445 Abandoned US20100276111A1 (en) 2007-07-27 2008-07-17 Process for Producing Steel Long Products by Continuous Casting and Rolling

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
Publication number Priority date Publication date Assignee Title
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

Citations (26)

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Publication number Priority date Publication date Assignee Title
US3349834A (en) * 1965-09-21 1967-10-31 United States Steel Corp Dual-control for controlling the liquid level in a continuous casting mold
US3917223A (en) * 1972-01-05 1975-11-04 Sistag Slide valve having adjustable packing
US4279402A (en) * 1979-04-05 1981-07-21 Sistag, Maschinenfabrik Sidler Stalder Ag Explosion barring shutoff device
US4522224A (en) * 1983-06-24 1985-06-11 Sistag, Maschinenfabrik Sidler Stalder Ag Gate valve construction
US4546788A (en) * 1981-10-29 1985-10-15 Sistag, Maschinenfabrik Sidler Ag Slide valve construction
US4646777A (en) * 1984-12-19 1987-03-03 Sistag Maschinenfabrik Sidler Stalder Ag Flat slide valve with notched guide strips
US4742990A (en) * 1986-07-07 1988-05-10 Sistag Maschinenfabrik Sidler Stalder Ag Gate valve
US5360053A (en) * 1991-02-06 1994-11-01 Concast Standard Ag Continuous casting mold for steel
US5409035A (en) * 1992-08-14 1995-04-25 Tillotson, Ltd. Automatic shutoff valve
US5469910A (en) * 1992-03-05 1995-11-28 Concast Standard Ag Process for the continuous casting of metal, in particular of steel into bloom and billet cross-sections
US5549278A (en) * 1992-08-11 1996-08-27 Sistag Parallel-slide gate valve
US5615731A (en) * 1994-07-25 1997-04-01 Concast Standard Ag Continous casting mould for an I-shaped preliminary section
US5988258A (en) * 1997-03-27 1999-11-23 Ishikawajima-Harima Heavy Industries Company Limited Casting metal strip
US6010112A (en) * 1997-05-29 2000-01-04 Sistag Absperrtechnik Driving device for a shut-off device in a pipe-line
US20040244941A1 (en) * 1999-06-07 2004-12-09 Fritz-Peter Pleschiutschnigg Method and system for operating a high-speed continuous casting plant
US7014164B2 (en) * 2002-09-25 2006-03-21 Sistag Absperrtechnik Device for protection against explosions in pipe-line
US7222658B2 (en) * 2003-12-27 2007-05-29 Concast Ag Die cavity of a casting die for continuously casting billets and blooms
US7422049B2 (en) * 2003-04-16 2008-09-09 Concast Ag Tubular mould for continuous casting
US7631684B2 (en) * 2004-12-29 2009-12-15 Concast Ag Continuous casting plant
US20100155570A1 (en) * 2007-06-04 2010-06-24 Franz Kawa Casting Die for Continuous Casting of Blooms, Slabs, and Billets
US20100224815A1 (en) * 2009-02-05 2010-09-09 Sistag Ag Absperrtechnik Slide Valve, In Particular for Blocking a Line Conveying Media
US20100276110A1 (en) * 2008-01-14 2010-11-04 Sms Concast Ag Continuous Casting Plant Particularly for Long Steel Products, and a Method for Continuous Casting
US20110001076A1 (en) * 2009-07-02 2011-01-06 Sistag Ag Absperrtechnik Slide Valve, in Particular for Blocking a Line Conveying Media
US7913745B2 (en) * 2007-06-27 2011-03-29 Sumitomo Metal Industries, Ltd. Method of continuous casting of small cross section billet
US7946556B1 (en) * 2010-08-16 2011-05-24 Sistag Ag Absperrtechnik Resilient seat seal for a valve
US8109320B2 (en) * 2005-12-24 2012-02-07 Concast Ag Method and apparatus for the continuous casting of preliminary steel sections

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DE1816849C3 (de) * 1968-12-24 1973-12-13 Demag Ag, 4100 Duisburg Verfahren zum Stranggießen und anschließendem Walzen aus der Gieß hitze von Stahl
JPS5137031A (ja) * 1974-09-18 1976-03-29 Mitsubishi Heavy Ind Ltd Renzokuchuzoatsuenhoho
JPS5514133A (en) * 1978-07-14 1980-01-31 Toshiba Corp Producing apparatus of steel bar product
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
SE464619B (sv) * 1985-09-13 1991-05-27 Olsson Ag Erik Saett och anlaeggning foer straenggjutning med horisontell eller lutande kokill
JPS6448609A (en) * 1987-08-19 1989-02-23 Hitachi Ltd Method for controlling speed
JP2856305B2 (ja) * 1993-09-22 1999-02-10 日新製鋼株式会社 連続鋳造における鋳型内溶鋼レベルの制御方法
JP2989737B2 (ja) † 1993-11-25 1999-12-13 勝彦 山田 鋼材の連続鋳造法および連続鋳造・圧延法
DE19639299C2 (de) * 1996-09-25 2001-02-22 Sms Demag Ag Vorrichtung zur Herstellung eines Vielkant- oder Profil-Formats in einer Stranggießanlage
DE931608T1 (de) † 1997-12-24 2000-05-04 Europa Metalli Spa Stranggiesskokille
JP3298523B2 (ja) * 1998-10-29 2002-07-02 住友金属工業株式会社 連続鋳造の湯面レベル制御方法
JP3649143B2 (ja) * 2001-04-03 2005-05-18 住友金属工業株式会社 連続鋳造方法
DE50301920D1 (de) † 2002-02-22 2006-01-19 Sms Demag Ag Verfahren zum stranggiessen und unmittelbaren verformen eines metall-, insbesondere eines giessstrangs aus stahlwerkstoffen
DE10314460B4 (de) * 2003-03-28 2006-04-20 Sms Demag Ag Verfahren und Stranggießvorrichtung mit einer Stranggießkokille zum Gießen von flüssigen Metallen, insbesondere von Stahlwerkstoffen
JP5026418B2 (ja) † 2005-07-19 2012-09-12 アルベディ，ジョバンニ 中断なしの鋼製品の製造方法及びプラント

Patent Citations (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349834A (en) * 1965-09-21 1967-10-31 United States Steel Corp Dual-control for controlling the liquid level in a continuous casting mold
US3917223A (en) * 1972-01-05 1975-11-04 Sistag Slide valve having adjustable packing
US4279402A (en) * 1979-04-05 1981-07-21 Sistag, Maschinenfabrik Sidler Stalder Ag Explosion barring shutoff device
US4546788A (en) * 1981-10-29 1985-10-15 Sistag, Maschinenfabrik Sidler Ag Slide valve construction
US4522224A (en) * 1983-06-24 1985-06-11 Sistag, Maschinenfabrik Sidler Stalder Ag Gate valve construction
US4646777A (en) * 1984-12-19 1987-03-03 Sistag Maschinenfabrik Sidler Stalder Ag Flat slide valve with notched guide strips
US4742990A (en) * 1986-07-07 1988-05-10 Sistag Maschinenfabrik Sidler Stalder Ag Gate valve
US5360053A (en) * 1991-02-06 1994-11-01 Concast Standard Ag Continuous casting mold for steel
US5469910A (en) * 1992-03-05 1995-11-28 Concast Standard Ag Process for the continuous casting of metal, in particular of steel into bloom and billet cross-sections
US5549278A (en) * 1992-08-11 1996-08-27 Sistag Parallel-slide gate valve
US5409035A (en) * 1992-08-14 1995-04-25 Tillotson, Ltd. Automatic shutoff valve
US5615731A (en) * 1994-07-25 1997-04-01 Concast Standard Ag Continous casting mould for an I-shaped preliminary section
US5988258A (en) * 1997-03-27 1999-11-23 Ishikawajima-Harima Heavy Industries Company Limited Casting metal strip
US6010112A (en) * 1997-05-29 2000-01-04 Sistag Absperrtechnik Driving device for a shut-off device in a pipe-line
US20040244941A1 (en) * 1999-06-07 2004-12-09 Fritz-Peter Pleschiutschnigg Method and system for operating a high-speed continuous casting plant
US7014164B2 (en) * 2002-09-25 2006-03-21 Sistag Absperrtechnik Device for protection against explosions in pipe-line
US7422049B2 (en) * 2003-04-16 2008-09-09 Concast Ag Tubular mould for continuous casting
US7222658B2 (en) * 2003-12-27 2007-05-29 Concast Ag Die cavity of a casting die for continuously casting billets and blooms
US7631684B2 (en) * 2004-12-29 2009-12-15 Concast Ag Continuous casting plant
US8109320B2 (en) * 2005-12-24 2012-02-07 Concast Ag Method and apparatus for the continuous casting of preliminary steel sections
US20100155570A1 (en) * 2007-06-04 2010-06-24 Franz Kawa Casting Die for Continuous Casting of Blooms, Slabs, and Billets
US7913745B2 (en) * 2007-06-27 2011-03-29 Sumitomo Metal Industries, Ltd. Method of continuous casting of small cross section billet
US20100276110A1 (en) * 2008-01-14 2010-11-04 Sms Concast Ag Continuous Casting Plant Particularly for Long Steel Products, and a Method for Continuous Casting
US20100224815A1 (en) * 2009-02-05 2010-09-09 Sistag Ag Absperrtechnik Slide Valve, In Particular for Blocking a Line Conveying Media
US20110001076A1 (en) * 2009-07-02 2011-01-06 Sistag Ag Absperrtechnik Slide Valve, in Particular for Blocking a Line Conveying Media
US7946556B1 (en) * 2010-08-16 2011-05-24 Sistag Ag Absperrtechnik Resilient seat seal for a valve

Also Published As

Publication number Publication date
EP2025432B2 (fr) 2017-08-30
JP5632942B2 (ja) 2014-11-26
CA2694755A1 (fr) 2009-02-05
JP2011504141A (ja) 2011-02-03
KR20100038195A (ko) 2010-04-13
BRPI0814203A8 (pt) 2018-12-18
CA2694755C (fr) 2015-02-24
JP2013223887A (ja) 2013-10-31
RU2010107172A (ru) 2011-09-10
RU2484921C2 (ru) 2013-06-20
EP2025432B1 (fr) 2014-03-19
CN102105244B (zh) 2015-09-09
WO2009015782A3 (fr) 2009-05-28
CN102105244A (zh) 2011-06-22
ZA201000216B (en) 2011-04-28
EP2025432A1 (fr) 2009-02-18
WO2009015782A2 (fr) 2009-02-05
BRPI0814203A2 (pt) 2015-01-27

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SMS CONCAST AG, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KAWA, FRANZ;REEL/FRAME:024590/0381

Effective date: 20100617

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION