EP2406025B1 - Busette pour systeme de coulée continu horizontal - Google Patents

Busette pour systeme de coulée continu horizontal Download PDF

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Publication number
EP2406025B1
EP2406025B1 EP10722536.9A EP10722536A EP2406025B1 EP 2406025 B1 EP2406025 B1 EP 2406025B1 EP 10722536 A EP10722536 A EP 10722536A EP 2406025 B1 EP2406025 B1 EP 2406025B1
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EP
European Patent Office
Prior art keywords
casting
segments
casting nozzle
hollow block
nozzle according
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
EP10722536.9A
Other languages
German (de)
English (en)
Other versions
EP2406025A1 (fr
Inventor
Hellfried Eichholz
Sven Klawiter
Rune SCHMIDT-JÜRGENSEN
Karl-Heinz Spitzer
Hans-Jürgen HECKEN
Jochen SCHLÜTER
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 Group GmbH
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SMS Group GmbH
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Publication date
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Publication of EP2406025A1 publication Critical patent/EP2406025A1/fr
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Publication of EP2406025B1 publication Critical patent/EP2406025B1/fr
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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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/064—Accessories therefor for supplying molten metal
    • B22D11/0642—Nozzles
    • 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
    • B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles

Definitions

  • the invention relates to a pouring nozzle for a horizontal strip casting installation, in particular for the casting of steel strip according to the preamble of claim 1.
  • the liquid steel must be applied to a cooled endless strip from the nozzle which forms a pouring channel.
  • Such a pouring nozzle is known from “ Direct Strip Casting "(DSC) - an option for the production of New Steel Grades” - steel research 74 (2003) No. 11/12 p. 724-731 ,
  • the liquid steel flows from a distributor via a horizontally lying feed channel into the pouring nozzle, which in cross section has a rectangular channel enclosed by refractory material.
  • the pouring nozzle is designed as a rectangular hollow block made of refractory material.
  • a so-called upper weir is arranged on the ceiling element and a so-called lower weir on the base element. Both weirs work together in the sense of a siphon to hold back the slag residues that remain in the melt.
  • a pouring nozzle for thin strip casting systems disclosed with a back dam, which rests on a support for the thin strip movable in the conveying direction and a front dam, which limits the casting gap to the carrier in the conveying direction.
  • a plurality of outflow openings for the melt lying side by side in the direction of the thin bandwidth are formed between the back and front dams.
  • casting nozzles which consist of several sub-elements with openings for the melt to exit ( GB 2013855 A1 . JP 58199649 ).
  • this relates to the static strength of the refractory material, in particular that of the ceiling element, which represents a support on two supports.
  • the ceiling element which represents a support on two supports.
  • there is great thermal expansion of the substructure during continuous operation which undesirably changes the clear cross section of the pouring nozzle.
  • the production of very wide pouring nozzles from refractory material also drives up costs in an unacceptable way.
  • the object of the invention is to be able to master casting widths> 300 mm with the proven casting nozzle, designed as a rectangular hollow block, with reasonable production costs.
  • the hollow block is divided at least once in the casting direction and a narrow sealing element is arranged at the separation point of the segments, the width of the remaining gaps in the separation point area being selected such that they are closed when the casting nozzle is operated.
  • the deflection that occurs when the pouring nozzle is operated is limited to individual shorter segments and is therefore manageable.
  • a sealing element is arranged between the segments for sealing at the separation points.
  • This is preferably a felt made of refractory material based on Al 2 O 3 , also known under the trade name "Pyrostop”. This material can withstand temperatures up to 1600 ° C. Depending on the thermal expansion of the refractory material used for the pouring nozzle, the thickness of the sealing element should be 1 - 2 mm.
  • the gaps remaining in the separation point areas when the individual segments are assembled are to be selected so that when the pouring nozzle is operated, they close due to the thermal expansion.
  • a disadvantage of the multi-part design of the pouring nozzle is the arrangement of a support web between the ceiling and floor element in the respective separation area, since this leads to the division of the steel flow.
  • the width of the support web should be as small as possible and preferably not exceed 10-20 mm.
  • the respective floor elements In order to facilitate the displacement of the segments transversely to the casting direction as a result of the thermal expansion, the respective floor elements have a step-like step corresponding to one another at the separation point.
  • the part opposing the pouring direction is designed as a clamping section. Both the width and the height are less than the front section.
  • both the top of the ceiling element and the underside of the bottom element of this clamping section is provided with a slope that increases against the casting direction.
  • the top of the ceiling element of the clamping section preferably adjoins the top of the ceiling element of the front section without a shoulder.
  • a modular design is proposed for such cases. It is characterized by a segment arranged on the right and left.
  • both segments will be designed identically for cost reasons.
  • the proposed multi-part design of the pouring nozzle has the advantage that the individual segments have the necessary static strength, can be produced more cost-effectively and enable a modular construction for different pouring widths.
  • the pouring nozzle according to the invention is explained in more detail.
  • Figure 1 and 5 are in two views, in Figure 2 in a top view, and in Figures 3 and 4 in two sections a split pouring nozzle according to the invention with the two segments 1.1, 1.2 shown.
  • Each segment 1.1, 1.2 is constructed in mirror image the same way, each with a ceiling element 2.1, 2.2, a floor element 3.1, 3.2 and a side element 4.1, 4.2. At the separation point 5 between the two segments 1.1, 1.2, a 1 - 2 mm thick sealing element 6 is arranged.
  • the respective floor element 3.1, 3.2 is provided at the separation point 5 with a corresponding step-like section 7.1, 7.2.
  • the limitation of the formation of the two segments 1.1, 1.2 with mirror image same refers to this step-like paragraph 7.1, 7.2.
  • the width of the gaps remaining in the separation point 5 during the assembly of the two segments 1.1, 1.2 are selected such that they close when the pouring nozzle is operated due to the thermal expansion.
  • each segment 1.1, 1.2 each has a front section 10.1, 10.2 and a clamping section 11.1, 11.2.
  • the details become the Figures 3 and 4 explained.
  • Figure 3 is a section along the line A - A in Figure 1 , This section shows on the one hand the channel 12.1 extending horizontally between the ceiling 2.1 and the floor element 3.1 and on the other hand the lower weir 8.1 arranged on the floor element 3.1.
  • the open arrow drawn in channel 12.1 indicates the pouring direction 13.
  • the section of the respective segment 1.1, 1.2 facing the pouring direction 13 is designed as a clamping section 11.1, 11.2.
  • the upper side of the ceiling element 2.1 in the clamping section 11.1 has a slope 14.1 which rises in the opposite direction to the casting direction 13.
  • the underside of the base element 3.1 in the clamping section 11.1 also has a slope 15.1 which rises in the opposite direction to the casting direction.
  • the slope angle of the two slopes is in the range ⁇ 5 °.
  • Figure 4 is a section along the line B - B in Figure 1 , In this section it can be seen that the side surfaces 16.1, 16.2 of the respective clamping section 11.1, 11.2 are straight. Reference should also be made to the double-conical design of the respective support webs 9.1, 9.2.
  • Such a design has the advantage that there is a streamlined course of the melt with at the same time sufficient rigidity of the support pillars.
  • Figure 6 shows in a same view as Figure 1 a four-part pouring nozzle, each with a segment 1.1, 1.2 on the edge and two middle segments 1.3, 1.4.
  • the two outer segments 1.1, 1.2 are constructed almost identically in mirror image and the two middle segments 1.3, 1.4 are identical. This makes it possible, depending on the desired casting width, to always use the two outer segments 1.1, 1.2 and to place either one or two middle segments 1.3, 1.4 in between and to choose the width of the middle or middle segments 1.3, 1.4 appropriately.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Claims (7)

  1. Buse de coulée pour une installation de coulée continue horizontale, en particulier pour la coulée de feuillard d'acier, laquelle buse de coulée est réalisée raccordée à un canal d'alimentation sous forme de bloc creux rectangulaire constitué d'un matériau réfractaire dont la zone de sortie se trouve seulement un peu au-dessus d'une bande sans fin refroidie recevant la masse fondue sortante,
    lequel bloc creux est divisé au moins une fois dans le sens de coulée, caractérisée en ce que,
    au niveau du point de séparation (5) des segments (1.1-1.4), un feutre en un matériau réfractaire à base de Al2O3, dont l'épaisseur est de 1 à 2 mm, est agencé comme élément d'étanchéité (6) et les fentes restantes dans la zone de point de séparation doivent être choisies quant à leur largeur de telle sorte qu'elles sont fermées lors du fonctionnement de la buse de coulée, dans laquelle les éléments de fond (3.1-3.4) du bloc creux qui sont contigus au niveau du point de séparation (5) présentent, en coupe transversale par rapport au sens de coulée, un décrochement (7.1, 7.2) en escalier correspondant l'un à l'autre.
  2. Buse de coulée selon la revendication 1,
    caractérisée en ce
    qu'une traverse de soutien (9.1, 9.2) reliant l'élément de couverture (2.1-2.4) à l'élément de fond (3.1-3.4) est agencée à côté du point de séparation (5).
  3. Buse de coulée selon la revendication 2,
    caractérisée en ce que
    la surface, proche du canal (12.1-12.4), de la traverse de soutien (9.1-9.2) respective est réalisée comme un double cône en coupe transversale dans le sens de coulée (13).
  4. Buse de coulée selon l'une quelconque des revendications 1-3,
    caractérisée en ce que
    le bloc creux présente à l'opposé du sens de coulée (13) un tronçon de serrage (11.1-11.4) dont la largeur transversalement au sens de coulée et la hauteur sont plus petites que le tronçon avant (10.1-10.4), dans laquelle aussi bien le dessus de l'élément de couverture (2.1) que le dessous de l'élément de fond (3.1) du tronçon de serrage (11.1) présente un biseau (14.1, 15.1) montant à l'opposé du sens de coulée (13).
  5. Buse de coulée selon la revendication 4,
    caractérisée en ce que
    le dessus de l'élément de couverture (2.1) du tronçon de serrage (11.1) se raccorde sans décrochement au côté supérieur de l'élément de couverture (2.1) du tronçon avant (10.1) de la buse de coulée.
  6. Buse de coulée selon l'une quelconque des revendications 1-5,
    caractérisée en ce que
    le bloc creux présente deux points de séparation (5), dans laquelle les segments (1.2, 1.3) situés à droite et à gauche sont réalisés symétriquement identiques et la largeur du segment intermédiaire (1.4) est adaptée à la largeur de coulée souhaitée.
  7. Buse de coulée selon l'une quelconque des revendications 1-5,
    caractérisée en ce que
    le bloc creux présente trois points de séparation (5), dans laquelle les segments (1.1, 1.2) situés à droite et à gauche sont réalisés symétriquement identiques et les deux segments médians (1.3, 1.4) sont réalisés identiques.
EP10722536.9A 2009-03-12 2010-02-15 Busette pour systeme de coulée continu horizontal Active EP2406025B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009012985A DE102009012985A1 (de) 2009-03-12 2009-03-12 Gießdüse für eine horizontale Bandgießanlage
PCT/DE2010/000214 WO2010102600A1 (fr) 2009-03-12 2010-02-15 Buse de coulée pour une installation horizontale de coulée en bande mince

Publications (2)

Publication Number Publication Date
EP2406025A1 EP2406025A1 (fr) 2012-01-18
EP2406025B1 true EP2406025B1 (fr) 2020-01-22

Family

ID=42320593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10722536.9A Active EP2406025B1 (fr) 2009-03-12 2010-02-15 Busette pour systeme de coulée continu horizontal

Country Status (11)

Country Link
US (1) US8302663B2 (fr)
EP (1) EP2406025B1 (fr)
JP (1) JP5480306B2 (fr)
KR (1) KR101662042B1 (fr)
CN (1) CN102348520B (fr)
AU (1) AU2010223681B2 (fr)
BR (1) BRPI1009441B1 (fr)
DE (1) DE102009012985A1 (fr)
RU (1) RU2510305C2 (fr)
UA (1) UA105380C2 (fr)
WO (1) WO2010102600A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011010040B3 (de) 2011-02-02 2012-08-02 Salzgitter Flachstahl Gmbh Verfahren und Einrichtung zum Erzeugen eines gegossenen Bandes aus Stahl mit über den Bandquerschnitt und die Bandlänge einstellbaren Werkstoffeigenschaften
DE102012013425A1 (de) 2012-07-03 2014-01-09 Salzgitter Flachstahl Gmbh Kontinuierlich arbeitende Bandgieß- und Walzanlage
JP6781839B2 (ja) * 2016-11-29 2020-11-04 エス・エム・エス・グループ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング 鋳造ノズル
CN107817752B (zh) * 2017-09-19 2024-01-30 芜湖安普机器人产业技术研究院有限公司 一种铜板水平连铸的自动化上料装置电气控制系统

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Publication number Priority date Publication date Assignee Title
CH633205A5 (de) * 1978-01-30 1982-11-30 Alusuisse Vorrichtung zum zufuehren einer metallschmelze beim bandgiessen.
JPS5835048A (ja) * 1981-08-26 1983-03-01 Mitsubishi Heavy Ind Ltd 水平連続鋳造装置用プラグ
US4593742A (en) 1982-04-28 1986-06-10 Hazelett Strip-Casting Corporation Apparatus for feeding and continuously casting molten metal with inert gas applied to the moving mold surfaces and to the entering metal
JPS58199649A (ja) * 1982-05-19 1983-11-21 Hitachi Ltd 金属薄帯製造用多孔ノズル
JPS61229449A (ja) * 1985-04-04 1986-10-13 Ishikawajima Harima Heavy Ind Co Ltd 薄板連続鋳造機用給湯装置
CN85102673A (zh) * 1985-04-09 1986-10-08 首都钢铁公司 嵌入式锆英石—石墨整体连接水口
US4716956A (en) 1986-12-03 1988-01-05 Aluminum Company Of America Roll caster feed tip and method
US4972900A (en) * 1989-10-24 1990-11-27 Hazelett Strip-Casting Corporation Permeable nozzle method and apparatus for closed feeding of molten metal into twin-belt continuous casting machines
JPH06190511A (ja) * 1992-12-25 1994-07-12 Nippon Steel Corp 薄肉鋳片の連続鋳造方法と鋳造用フラットノズル
US5452827A (en) * 1993-07-13 1995-09-26 Eckert; C. Edward Nozzle for continuous caster
DE4436990C1 (de) * 1994-10-07 1995-12-07 Mannesmann Ag Tauchgießrohr
JPH09201655A (ja) * 1996-01-22 1997-08-05 Kobe Steel Ltd 移動鋳型式薄スラブ連鋳機の注湯ノズルおよび移動鋳型式薄スラブ連鋳機における注湯方法
DE19636697C1 (de) 1996-06-07 1997-08-14 Preussag Stahl Ag Gießdüse für Dünnbandgießanlagen
IT1284035B1 (it) * 1996-06-19 1998-05-08 Giovanni Arvedi Tuffante per la colata continua di bramme sottili
US20060191664A1 (en) * 2005-02-25 2006-08-31 John Sulzer Method of and molten metal feeder for continuous casting
DE102005062854A1 (de) * 2005-12-23 2007-07-05 Salzgitter Flachstahl Gmbh Verfahren und Einrichtung zum Erzeugen von metallischen Warmbändern insbesondere aus Leichtbaustahl
JP2007203337A (ja) * 2006-02-02 2007-08-16 Ishikawajima Harima Heavy Ind Co Ltd 双ロール鋳造機

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Also Published As

Publication number Publication date
KR20110126135A (ko) 2011-11-22
EP2406025A1 (fr) 2012-01-18
UA105380C2 (uk) 2014-05-12
KR101662042B1 (ko) 2016-10-10
CN102348520B (zh) 2014-04-16
JP5480306B2 (ja) 2014-04-23
JP2012519595A (ja) 2012-08-30
RU2510305C2 (ru) 2014-03-27
CN102348520A (zh) 2012-02-08
US8302663B2 (en) 2012-11-06
BRPI1009441B1 (pt) 2018-08-28
DE102009012985A1 (de) 2010-09-23
AU2010223681B2 (en) 2015-12-10
RU2011141293A (ru) 2013-04-20
US20120138257A1 (en) 2012-06-07
AU2010223681A1 (en) 2011-09-22
WO2010102600A1 (fr) 2010-09-16
BRPI1009441A2 (pt) 2016-03-01

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