EP0403412A1 - Seitenwand für eine Stranggiessvorrichtung mit beweglichen Wänden - Google Patents

Seitenwand für eine Stranggiessvorrichtung mit beweglichen Wänden Download PDF

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Publication number
EP0403412A1
EP0403412A1 EP90470034A EP90470034A EP0403412A1 EP 0403412 A1 EP0403412 A1 EP 0403412A1 EP 90470034 A EP90470034 A EP 90470034A EP 90470034 A EP90470034 A EP 90470034A EP 0403412 A1 EP0403412 A1 EP 0403412A1
Authority
EP
European Patent Office
Prior art keywords
wall
lateral
walls
cylinders
movable
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.)
Withdrawn
Application number
EP90470034A
Other languages
English (en)
French (fr)
Inventor
Paul Victor Riboud
Jean-Pierre Birat
Hervé Tavernier
Jean-Louis Leclaire
Michel Larrecq
Jacques Spiquel
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.)
USINOR SA
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
USINOR Sacilor SA
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 Institut de Recherches de la Siderurgie Francaise IRSID, USINOR Sacilor SA filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Publication of EP0403412A1 publication Critical patent/EP0403412A1/de
Withdrawn legal-status Critical Current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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • 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 the continuous casting between movable walls of thin metallic products. More precisely, it relates to the means making it possible to close laterally the casting space delimited by said movable walls and located above the neck, or isthmus, defined as being the level where the movable walls are closest to one of the 'other.
  • the object of the present invention is to propose another solution to the problems of parasitic solidification on the small faces, while simplifying the production of the "joint" between the parts in relative motion, and by improving the sealing of this "joint".
  • the invention relates to a closure wall of the lateral end of the casting space of a continuous casting installation between movable walls comprising two cooled movable walls facing each other, this wall d 'obturation comprising a front part having a front surface directed towards the casting space.
  • this wall is characterized in that it comprises at least one lateral part held against the edge of a movable wall and having a lateral surface directed towards the pouring space, this lateral surface being in the extension of the surface of a movable wall and connecting to said front surface recessed in the closure wall.
  • the basic idea of the invention is to seal between the movable walls and the fixed end walls along a plane perpendicular to the movable walls, as in the case of a wall flat shutter applied against the edges of the movable walls, which considerably simplifies the production of said fixed walls and allows any relative spacing of the movable walls without harming the seal.
  • the fixed wall which therefore has a "hollow" zone (the front part) has a lateral surface in the extension of the surface of the movable wall, the metal skin solidified in contact with the movable wall cooled extends practically without discontinuity by a solidified tongue in contact with the lateral surface of this lateral part.
  • the solidified skin therefore covers the joint between the movable wall and the fixed wall, thus preventing infiltration of the liquid metal contained in the casting space.
  • the tongue forming the edge of the solidified skin is small.
  • this tongue simultaneously solidifies the part of the skin formed in contact with the cooled movable wall, it is entrained with this part of skin by sliding on said fixed lateral surface practically without risk of snagging.
  • it is moreover possible to lubricate the lateral surface in a similar manner to the lubrication of a conventional continuous casting mold.
  • Figure 1 one end of a continuous casting installation between cylinders, comprising two cylinders 1 and 2, the second of which has been symbolized only by the trace 21 of the end of its wall.
  • the two cylinders with parallel axes and located in the same horizontal plane P, are rotated in opposite directions according to arrows 3 and 4, and spaced at the neck 5, corresponding to the level of the plane P passing through the axes of the cylinders, a distance corresponding to the thickness of the cast product.
  • the liquid metal is supplied, according to one of the well-known methods, in the casting space delimited, on the one hand, by the part of the walls of the cylinders situated above the neck and, on the other hand , by the shutter crosses located at the edges of the cylinders and in sealed contact with said edges. It is clear that the closure walls being fixed and the walls of the cylinders movable, a minimum functional clearance must be observed between them to avoid intense friction and the wear which would result therefrom. As a result, the seal cannot be absolute and infiltration of liquid metal may occur. Reducing the risk of infiltration is in particular one of the aims of the present invention.
  • FIG. 1 a closing wall, or "small face" 6, consisting of a vertical plate 61 held with a functional clearance against the ends of the cylinders 1 and 2.
  • This plate 61 is hollowed out in its part directly in contact with the casting space so as to have a recess 62 delimited by a front surface 63 and two lateral surfaces 64 in the extension of the cylindrical surfaces of the cylinders 1 and 2. These surfaces are therefore portions of cylindrical surface having the same curvature as the cylinders, and extend down to the level of the neck 5.
  • the front surface 63 is flat and slightly inclined relative to the vertical to form a draft.
  • the draft allows, during casting, the lateral expansion of the product during solidification which can occur by the rolling effect of the rotating cylinders.
  • the width of the lateral surfaces 64 increases from top to bottom up to the level of the neck.
  • the front surface 63 can also be vertical, the width of the side surfaces 64 being then constant, or even slightly curved.
  • the front surface 63 is the surface of a front part 65 added in a hollow machining performed in the plate 61, this front part being made of a thermally insulating refractory material.
  • the side surfaces 64 are formed by the surfaces of the side parts 66 made of a metallic material and preferably cooled, for example by internal circulation of a cooling fluid.
  • the recess 62 continues under the neck in the form of a groove 67 of constant width forming a guide for the edges of the cast product and in which the solidification of these can be completed.
  • FIGs in Figure 3 show the evolution of the formation of solidified skins during casting. During this, the pouring space is supplied with liquid metal. This solidifies on contact with the cooled walls of the cylinders and also on contact with the lateral surfaces 64 of the closure wall 6.
  • the liquid metal 10 has started to solidify, forming the skins 11 and 12 which extend in the recess 62 to the front surface 63 by covering the joint zone 13 between the edge of the cylinders 1 and 2 and the lateral parts 66 of the closure wall 6.
  • the solidification of the metal continued. While getting closer to each other, the skins 11 and 12 have thickened and their edges 11 ′, 12 ′ are extended by following the relief of the front surface 63. At level c , corresponding to the level of the neck 5, the two skins 11 and 12 have joined together and form the fully solidified finished product 13.
  • the skins 11 and 12 solidified in contact with the walls of the cylinders accompany these walls in their movement practically without relative sliding.
  • the surfaces of these lateral parts can advantageously be lubricated; for example means may be provided for injecting a lubricating fluid at the joint plane between cylinders and closure walls, which may have the additional advantage of reducing friction, and therefore wear, between these elements.
  • the lateral surfaces 64 may also not be precisely in alignment with the cylindrical surfaces of the cylinders but form with them an angle different from 180 °, such as the obtuse angle ⁇ shown in the diagrams of FIG. 9
  • the trace of said lateral surface in a horizontal plane forms an obtuse angle with the generator, contained in the same plane, of the adjacent movable wall.
  • This angle can be constant over the height of the recess and in this case the cast product will have a thinner edge than the central part of the product.
  • the lateral surfaces are then tapered. This angle can also open progressively towards the bottom of the recess, as shown in FIG. 9 b to end at the neck at a flat angle, the section then being identical to that shown in FIG. 3 c . In this case, the lateral surfaces 64 ′ are then left surfaces.
  • FIGS. 4, 5 and 6 relate to another variant of the invention in which the lateral surfaces 71, while remaining in the extension of the cylindrical surfaces of the cylinders, have a configuration such that they progressively encroach on the front part until to join, near the level of the neck between the cylinders, forming said front surface 72 at this level.
  • the front part 73 of refractory material having good thermal insulation characteristics ends in a downward point between the frontal surface areas 71 ′ resulting from the progressive deformation of the lateral surfaces 71.
  • the lateral surfaces 71 gradually widen , from the top to the bottom of the obturation wall, in a rounding (fig.
  • FIGS. 7 and 8 Yet another variant, applied in the case where the cylinders are offset axially, is shown in FIGS. 7 and 8.
  • the closure wall 8 is shaped so as to be applied on the one hand to the front surface of a cylinder 2 ′ and on the other hand on the cylindrical surface of the other cylinder 1 ′.
  • One half of the wall 8, that located on the side of the cylinder 2 ′, is similar to one of the configurations previously described and has a lateral surface 81 in the extension of the cylindrical surface of the cylinder 2 ′.
  • the other half, located on the side of the cylinders 1 ′ is similar to the device described in the French patent application No. 8812074 already cited and the teaching of which is incorporated here by reference.
  • This second half is shaped so as to have a curved surface of the same radius as the cylinder 1 ′ and placed against the cylindrical surface of the latter.
  • a metal strip 82 borders the central zone 83 of refractory material from the wall.
  • the surface 84 of this strip, directed towards the pouring space is a left surface forming a bevel at its upper end.
  • this bevel increases regularly, from top to bottom, to arrive at a right angle at the neck between the cylinders, where the surface 84 joins a pad 85 perpendicular to the axes of the cylinders.
  • this strip allows the solidified skin on the cylinder 1 ′ to extend over the surface 84 of the strip, covering the joint area 86 between the cylinder and said strip, which ensures the sealing of the casting space in this area.
  • the materials constituting the different parts of the closure wall can be adapted to the nature of the cast metal insofar as the material constituting the central part of the wall is a refractory material chosen to have a low thermal conductivity.
  • the parts side may also be made of a refractory material but preferably will, as indicated above, metallic and cooled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP90470034A 1989-06-15 1990-06-07 Seitenwand für eine Stranggiessvorrichtung mit beweglichen Wänden Withdrawn EP0403412A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8908086 1989-06-15
FR8908086A FR2652021A1 (fr) 1989-06-15 1989-06-15 Paroi d'obturation laterale pour une installation de coulee continue entre parois mobiles.

Publications (1)

Publication Number Publication Date
EP0403412A1 true EP0403412A1 (de) 1990-12-19

Family

ID=9382860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90470034A Withdrawn EP0403412A1 (de) 1989-06-15 1990-06-07 Seitenwand für eine Stranggiessvorrichtung mit beweglichen Wänden

Country Status (14)

Country Link
US (1) US5040591A (de)
EP (1) EP0403412A1 (de)
JP (1) JPH0332450A (de)
KR (1) KR910000268A (de)
CN (1) CN1021551C (de)
AU (1) AU632133B2 (de)
BR (1) BR9002829A (de)
CA (1) CA2018679A1 (de)
CS (1) CS299490A2 (de)
DD (1) DD295105A5 (de)
FR (1) FR2652021A1 (de)
HU (1) HUT60650A (de)
RU (1) RU1838035C (de)
ZA (1) ZA904630B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477045B1 (de) * 1990-09-03 1995-03-29 Usinor Sacilor Zweiwalzenstranggiessanlage
FR2765504A1 (fr) * 1997-07-04 1999-01-08 Usinor Face laterale d'obturation de l'espace de coulee d'une installation de coulee continue entre cylindres de bandes minces metalliques

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636259B1 (fr) * 1988-09-14 1994-03-11 Irsid Paroi laterale pour une installation de coulee continue entre parois mobiles et installation comportant cette paroi
DE4438118C2 (de) * 1994-10-26 2003-02-13 Siemens Ag Zweiwalzen-Gießmaschine
FR2842130B1 (fr) * 2002-07-12 2004-10-15 Usinor Face laterale pour installation de coulee continue de bandes metalliques entre deux cylindres
DE502004002199D1 (de) * 2003-07-01 2007-01-11 Sms Demag Ag Verfahren zum betrieb einer bandgiessmaschine f r die erzeug ung eines metallbandes
CH697156A5 (de) * 2004-09-17 2008-05-30 Main Man Inspiration Ag Seitenabdichtung eines zwischen zwei Giessrollen einer Bandgiessmaschine gebildeten Giessspaltes.
US8191610B2 (en) * 2008-11-24 2012-06-05 Nucor Corporation Strip casting apparatus with improved side dam
CN102990021B (zh) * 2012-12-18 2016-01-13 江苏三环实业股份有限公司 对滚式铅带成型机
US10046384B2 (en) 2015-09-30 2018-08-14 Nucor Corporation Side dam with pocket

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754802A (en) * 1987-08-05 1988-07-05 Nisshin Steel Co., Ltd. Continuous casting apparatus for steel plate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185548A (ja) * 1983-04-06 1984-10-22 Kawasaki Steel Corp 薄鋳片連続鋳造機
JPS59191549A (ja) * 1983-04-15 1984-10-30 Nippon Kokan Kk <Nkk> 金属板の連続鋳造装置
JPS6083754A (ja) * 1983-10-14 1985-05-13 Ishikawajima Harima Heavy Ind Co Ltd 双ロ−ル式連続鋳造機
JPS60221155A (ja) * 1984-04-17 1985-11-05 Ishikawajima Harima Heavy Ind Co Ltd 連続鋳造装置
JPS63303658A (ja) * 1987-06-05 1988-12-12 Kawasaki Steel Corp 紋り込み式連続鋳造方法およびその装置
JPS6453737A (en) * 1987-08-25 1989-03-01 Hitachi Ltd Reducing continuous casting machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754802A (en) * 1987-08-05 1988-07-05 Nisshin Steel Co., Ltd. Continuous casting apparatus for steel plate

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 13, no. 140 (M-810)[3488], 6 avril 1988; & JP-A-63 303 658 (KAWASAKI STEEL CORP.) 12-12-1988 *
PATENT ABSTRACTS OF JAPAN, vol. 13, no. 244 (M-834)[3592], 7 juin 1989; & JP-A-1 053 737 (HITACHI LTD) 01-03-1989 *
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 226 (M-412)[1949], 12 septembre 1985; & JP-A-60 083 754 (ISHIKAWAJIMA HARIMA JUKOGYO K.K.) 13-05-1985 *
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 46 (M-360)[1769], 27 février 1985; & JP-A-59 185 548 (KAWASAKI SEITETSU K.K.) 22-10-1984 *
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 57 (M-363)[1780], 13 mars 1985; & JP-A-59 191 549 (NIPPON KOKAN K.K.) 30-10-1984 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477045B1 (de) * 1990-09-03 1995-03-29 Usinor Sacilor Zweiwalzenstranggiessanlage
FR2765504A1 (fr) * 1997-07-04 1999-01-08 Usinor Face laterale d'obturation de l'espace de coulee d'une installation de coulee continue entre cylindres de bandes minces metalliques
EP0894556A1 (de) * 1997-07-04 1999-02-03 Usinor Seitenwand für eine Zweirollenstranggiessanlage zur Herstellung von dünnen Metallbändern
US6082437A (en) * 1997-07-04 2000-07-04 Usinor Side wall for closing off the casting space of a plant for the twin-roll continuous casting of thin metal strip

Also Published As

Publication number Publication date
CN1048179A (zh) 1991-01-02
JPH0332450A (ja) 1991-02-13
RU1838035C (ru) 1993-08-30
FR2652021A1 (fr) 1991-03-22
BR9002829A (pt) 1991-08-20
KR910000268A (ko) 1991-01-29
CS299490A2 (en) 1991-10-15
AU5715990A (en) 1990-12-20
DD295105A5 (de) 1991-10-24
AU632133B2 (en) 1992-12-17
US5040591A (en) 1991-08-20
ZA904630B (en) 1992-02-26
HUT60650A (en) 1992-10-28
CN1021551C (zh) 1993-07-14
HU903855D0 (en) 1990-11-28
CA2018679A1 (fr) 1990-12-15

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