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WO2002038309A1 - Dispositif et procede pour realiser la coulee continue d'un feuillard metallique dans la fente de coulee entre une paire de rouleaux pouvant etre mis en rotation et pouvant former une coquille - Google Patents

Dispositif et procede pour realiser la coulee continue d'un feuillard metallique dans la fente de coulee entre une paire de rouleaux pouvant etre mis en rotation et pouvant former une coquille Download PDF

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Publication number
WO2002038309A1
WO2002038309A1 PCT/EP2001/012851 EP0112851W WO0238309A1 WO 2002038309 A1 WO2002038309 A1 WO 2002038309A1 EP 0112851 W EP0112851 W EP 0112851W WO 0238309 A1 WO0238309 A1 WO 0238309A1
Authority
WO
WIPO (PCT)
Prior art keywords
casting
gas
rollers
front wall
permeable
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.)
Ceased
Application number
PCT/EP2001/012851
Other languages
German (de)
English (en)
Inventor
Hans Streubel
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.)
Main Management Inspiration AG
SMS Siemag AG
Original Assignee
Main Management Inspiration AG
SMS Demag 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
Application filed by Main Management Inspiration AG, SMS Demag AG filed Critical Main Management Inspiration AG
Priority to AU2002223669A priority Critical patent/AU2002223669A1/en
Priority to EP01993517A priority patent/EP1337363A1/fr
Publication of WO2002038309A1 publication Critical patent/WO2002038309A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B22D11/0648—Casting surfaces
    • B22D11/066—Side dams

Definitions

  • the invention relates to a device for the continuous casting of a metal strip, preferably in the thickness range between 1 and 10 mm, in particular a steel strip, between two in the casting direction with one another to form the wide side walls of the metal strip in the manner of a circumferentially movable mold with radially spaced coolable rollers, which are between them Limit the casting gap, the end faces of the casting gap and the rollers having adjustable and / or adjustable sealing elements.
  • Document WO 00/40355 describes plates made of refractory material for the end face sealing of casting machines in continuous operation, comprising two counter-rotating rollers with two or more overlapping layers made of ceramic and / or refractory material.
  • the first layer consists of a material which is comparatively easily worn during operation of the rollers, in particular during start-up operation, whereas the second layer underlaid with the first layer consists of ceramic and / or heat-resistant and / or carbon material has high resistance to heat and abrasion and has self-lubricating properties.
  • Document EP 0 714 716 B1 discloses a device for the continuous casting of molten steel between two counter-rotating rolls with parallel axes, which define a casting space between them, and comprises a cover which is arranged above the casting space and has two longitudinal walls, each along the Extend the surface of each roller and are provided with gas supply lines which have openings which open to these surfaces.
  • Each wall has means for sealing by pressure loss in order to prevent pressure loss in a zone between the wall and the surface of the corresponding roller and between two of the lines, so that the gas stream which is supplied from the line which is upstream with respect to the direction of rotation of the roller is directed to the outside of the cover, and the gas stream which is supplied from the line, which is downstream, is deflected to the casting room.
  • the means for sealing by pressure loss are formed by a projection of the wall which extends between the lines in the immediate vicinity of the surface of the roller.
  • the means for sealing by pressure loss can have longitudinal grooves which are arranged parallel to the lines.
  • Document WO 99/48 635 describes a process for the continuous casting of a thin strip, in particular a steel strip, preferably with a thickness of less than 10 mm, in the two-roll process, metal melt in a casting gap formed by two casting rolls in the thickness of the strip to be cast is poured to form a melt pool and the surfaces of the casting rolls above the melt pool are flushed with an inert gas or an inert gas mixture.
  • the gas purging of the surfaces of the casting rolls is carried out locally differently over the longitudinal extent of the casting rolls.
  • the local differences can be gas compositions, gas quantities or gas pressures. Locally different states of the surface roughness of the casting rolls or the surface reflection properties of the casting rolls or locally different discoloration of the surfaces of the casting rolls can also be observed.
  • the surfaces of the casting rolls are divided into zones arranged one behind the other in the direction of their longitudinal extent. Each zone is observed for the condition of the surfaces.
  • the locally different gas purging is carried out zone by zone, ie with uniform and uniform gas purging within each zone.
  • WO 93/22 087 describes a continuous caster with steam extraction.
  • a pair of suction scoops create a negative pressure above the surface of the cast room.
  • the suction hoods are provided with closing elements that close off a space above the melting bath.
  • Cleaning gas for example argon, is introduced into the closed space through nozzles, in two streams, which flow down over the surfaces of the casting rolls towards the surface of the molten bath.
  • the invention has for its object to provide a device for the continuous casting of a metal strip with two radially spaced coolable rollers which delimit a casting gap between them, the end faces of the casting gap and the rollers adjustable and / or adjustable
  • sealing elements that provide a reliable seal, causing only very little wear on the end faces of the casting rollers and the sealing elements, reliably prevent melt from sticking to the sealing elements or parts thereof, and in particular result in an uncomplicated design of the sealing elements and their positioning devices.
  • each sealing element each has an essentially parallel front and rear wall with each other firmly connected edge areas between them in the manner of a Pocket form a gas-pressurized cavity, which can be connected to a supply line for inert compressed gas, and that the front wall of each sealing element, which can be placed on the end faces of the rollers as an end face seal of the casting gap, consists of a refractory, gas-permeable material.
  • an ascending gas cushion builds up on the side of the end sealing element that comes into direct contact with the melt due to the porosity of the material of the front wall, with which the rotating end face of the adjacent casters contacts with reduced contact pressure and thus both sticking of the melt the front wall of the sealing element prevents as well as an optimal sealing of the casting space between the rollers is made possible without disadvantageous abrasion.
  • the cavity can be formed by the porous, fire-proof side seal on the roller side and by the supporting and adjustable support elements.
  • FIG. 1 shows a device according to the invention for the continuous casting of a comparatively narrow metal strip in a front view of the casting rolls;
  • Figure 2 shows the device of FIG. 1 in side view.
  • Figure 1 shows a device for the continuous casting of a metal strip 13, in particular a steel strip, with two coolable rollers 6 arranged in the casting direction with one another to form the broad side of the metal strip in the manner of a circumferentially movable mold, which delimit a casting gap 7 between them, the End faces of the casting gap 7 and the rollers 6 adjustable and / or adjustable sealing elements 5 on sen.
  • the roll casting machine preferably produces steel strips in the thickness range between 1 and 10 mm.
  • Each sealing element 5 has a front wall 10 or rear wall 11, which is essentially parallel to one another at a distance from one another, with edge regions 14 which are firmly connected to one another and which form a gas-pressurized cavity 8 between them in the manner of a pocket.
  • the cavity 8 can be connected to a feed line 9 for inert compressed gas.
  • the front wall 10 of each sealing element 5, which can be placed on the end faces 12 of the rollers 6 as the end face seal 5 of the casting gap 7, consists of a refractory, gas-permeable material.
  • the gas-permeable refractory material forms a porous front wall 10 with an essentially uniform arrangement of pores over its surface.
  • the size and / or the number of gas-permeable pores is adapted to the casting parameters via the height of the side seal in accordance with the ferrostatic pressure, taking into account the volume expansion due to the temperature increase of the inert gas.
  • the gas-permeable, refractory wall 10 consists of a pile of refractory material particles which are connected to one another by sintering under high pressure and high temperature to form a solid shaped structure which has a multiplicity of fine pores.
  • the porous, refractory material can preferably be a sintered metal, in particular a sintered steel.
  • a sintered metal has, in particular, self-lubricating, friction-reducing sliding properties. It can consist of sintered stainless steel particles.
  • the porosity of the front wall 10 is approximately limited to the area wetted by liquid melt and the contact area to the end face of the casting roll.
  • the number and size of the pores in the contact area to the end face of the casting roll is preferably greater than in the pouring area.
  • the boundary between the front wall 10 and the non-porous part of the sealing element 5 is shown in FIG. 1 by a line 10 indicated in points.
  • an area-related volume flow and the working pressure of the inert gas are set in accordance with the casting parameters such as steel quality, cross-sectional area of the casting, casting speed and casting temperature.
  • the continuous casting plant has, in a manner known per se, a ladle 1 with a pouring tube 2 for the controlled transfer of melt into the rewinder 3, from which melt is introduced in a controlled flow into the pouring gap 7 between the rollers 6 with the aid of at least one dip tube 4 ,

Landscapes

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

Abstract

L'invention concerne un dispositif pour réaliser la coulée continue d'un feuillard métallique (13) présentant de préférence une épaisseur comprise entre 1 et 10 mm, notamment un feuillard d'acier. Ce dispositif comprend deux rouleaux (6) pouvant être refroidis, espacés radialement, disposés dans le sens de coulée de façon à former le côté large du feuillard métallique à la manière d'une coquille pouvant être mise en rotation. Ces rouleaux (6) délimitent entre eux une fente de coulée (7), les faces de cette dernière et des rouleaux (6) formant des éléments d'étanchéification (5) réglables. Afin d'améliorer l'étanchéité, chaque élément d'étanchéification (5) présente une paroi avant (10) et une paroi arrière (11) sensiblement parallèles, placées à distance l'une de l'autre, comportant des zones marginales (14) qui sont reliées solidement les unes aux autres et qui forment entre elles une cavité (8) soumise à une pression gazeuse, à la manière d'une poche. Cette cavité (8) peut être raccordée à une conduite d'alimentation (9) destinée à un gaz inerte sous pression. La paroi avant (10) de chaque élément d'étanchéification (6) pouvant être appliquée sur les faces (12) des rouleaux (6) afin d'assurer l'étanchéité des faces de la fente de coulée (7) est constituée d'un matériau résistant au feu et perméable au gaz.
PCT/EP2001/012851 2000-11-09 2001-11-07 Dispositif et procede pour realiser la coulee continue d'un feuillard metallique dans la fente de coulee entre une paire de rouleaux pouvant etre mis en rotation et pouvant former une coquille Ceased WO2002038309A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002223669A AU2002223669A1 (en) 2000-11-09 2001-11-07 Device and method for continuously casting a metal strip in the casting gap between a pair of rollers which can move in a rotating manner and which can form a mould
EP01993517A EP1337363A1 (fr) 2000-11-09 2001-11-07 Dispositif et procede pour realiser la coulee continue d'un feuillard metallique dans la fente de coulee entre une paire de rouleaux pouvant etre mis en rotation et pouvant former une coquille

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10055410.5 2000-11-09
DE2000155410 DE10055410A1 (de) 2000-11-09 2000-11-09 Vorrichtung und Verfahren zum Stranggießen eines Metallbandes im Gießspalt zwischen einem Paar umlaufend bewegbaren, eine Kokille ausbildbaren Rollen

Publications (1)

Publication Number Publication Date
WO2002038309A1 true WO2002038309A1 (fr) 2002-05-16

Family

ID=7662617

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/012851 Ceased WO2002038309A1 (fr) 2000-11-09 2001-11-07 Dispositif et procede pour realiser la coulee continue d'un feuillard metallique dans la fente de coulee entre une paire de rouleaux pouvant etre mis en rotation et pouvant former une coquille

Country Status (5)

Country Link
EP (1) EP1337363A1 (fr)
CN (1) CN1484557A (fr)
AU (1) AU2002223669A1 (fr)
DE (1) DE10055410A1 (fr)
WO (1) WO2002038309A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2024505851A (ja) * 2021-02-11 2024-02-08 ダニエーリ エ チ．オフィシーネ メカニケ ソシエタ ペル アチオニ 金属製品鋳造における金属材料封じ込めシステム

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101337820B (zh) * 2008-08-15 2012-07-04 上海宝明耐火材料有限公司 连铸中间包结晶器引锭头用密封绳耐火材料及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS579566A (en) * 1980-06-23 1982-01-19 Mitsubishi Heavy Ind Ltd Direct rolling type continuous casting method of metallic sheet
EP0447940A1 (fr) * 1990-03-14 1991-09-25 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Produit fritté pour la fabrication d'un manchon protecteur utilisable dans un dispositif destiné au moulage continu de tôle mince et manchon protecteur utilisant ce produit fritté
JPH04224050A (ja) * 1990-12-21 1992-08-13 Kobe Steel Ltd ストリップキャスティングにおける端部凝固防止方法
DE4321478A1 (de) * 1992-07-03 1994-01-05 Usinor Sacilor Puteaux Anlage zum kontinuierlichen Gießen zwischen beweglichen Wänden und Gießverfahren unter Verwendung dieser Anlage
EP0588743A1 (fr) * 1992-09-14 1994-03-23 USINOR SACILOR Société Anonyme Dispositif de coulée continue entre cylindres de produits métalliques minces

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS579566A (en) * 1980-06-23 1982-01-19 Mitsubishi Heavy Ind Ltd Direct rolling type continuous casting method of metallic sheet
EP0447940A1 (fr) * 1990-03-14 1991-09-25 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Produit fritté pour la fabrication d'un manchon protecteur utilisable dans un dispositif destiné au moulage continu de tôle mince et manchon protecteur utilisant ce produit fritté
JPH04224050A (ja) * 1990-12-21 1992-08-13 Kobe Steel Ltd ストリップキャスティングにおける端部凝固防止方法
DE4321478A1 (de) * 1992-07-03 1994-01-05 Usinor Sacilor Puteaux Anlage zum kontinuierlichen Gießen zwischen beweglichen Wänden und Gießverfahren unter Verwendung dieser Anlage
EP0588743A1 (fr) * 1992-09-14 1994-03-23 USINOR SACILOR Société Anonyme Dispositif de coulée continue entre cylindres de produits métalliques minces

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 069 (M - 125) 30 April 1982 (1982-04-30) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 576 (M - 1345) 16 December 1992 (1992-12-16) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2024505851A (ja) * 2021-02-11 2024-02-08 ダニエーリ エ チ．オフィシーネ メカニケ ソシエタ ペル アチオニ 金属製品鋳造における金属材料封じ込めシステム
JP7681711B2 (ja) 2021-02-11 2025-05-22 ダニエーリ エ チ．オフィシーネ メカニケ ソシエタ ペル アチオニ 金属製品鋳造における金属材料封じ込めシステム

Also Published As

Publication number Publication date
DE10055410A1 (de) 2002-05-23
AU2002223669A1 (en) 2002-05-21
CN1484557A (zh) 2004-03-24
EP1337363A1 (fr) 2003-08-27

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