EP0406142A1 - Kassette, bestimmt zum Abschliessen der Stirnseite einer Stranggiessanlage - Google Patents

Kassette, bestimmt zum Abschliessen der Stirnseite einer Stranggiessanlage Download PDF

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Publication number
EP0406142A1
EP0406142A1 EP90470037A EP90470037A EP0406142A1 EP 0406142 A1 EP0406142 A1 EP 0406142A1 EP 90470037 A EP90470037 A EP 90470037A EP 90470037 A EP90470037 A EP 90470037A EP 0406142 A1 EP0406142 A1 EP 0406142A1
Authority
EP
European Patent Office
Prior art keywords
plate
refractory
cassette
refractory plate
casing
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
EP90470037A
Other languages
English (en)
French (fr)
Other versions
EP0406142B1 (de
Inventor
Philippe Blin
Patrice Rahier
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 EP0406142A1 publication Critical patent/EP0406142A1/de
Application granted granted Critical
Publication of EP0406142B1 publication Critical patent/EP0406142B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22D11/0637—Accessories therefor
    • B22D11/0648—Casting surfaces
    • B22D11/066—Side dams

Definitions

  • the present invention relates to a cassette intended to form a front closing face of a device for continuously casting liquid metal between two parallel cylinders, in particular liquid steel.
  • cassettes of this type comprise a metal casing, open on one of its sides and consequently having a C-shaped profile, in which is housed a plate of refractory material which can be preheated before the pouring of the liquid metal.
  • One of the faces of the refractory block is therefore in abutment on the bottom of the envelope while its opposite face is in contact with the liquid metal.
  • the refractory plate heats up on contact with the molten metal and therefore expands.
  • the refractory plate is clamped in the rigid and cooler envelope which surrounds it, it tends to deform by buckling, and therefore loses its flatness by taking a bulge which is harmful to the seal between it and the front faces cylinders. It can then be seen that infiltration of liquid metal sometimes occurs between the front faces of the cylinders and the closing cassettes.
  • the bottom of the envelope is generally perforated in order to allow preheating of the refractory plate by a burner.
  • Preheating of the refractory plate before casting is carried out on its external face, to avoid damaging the surfaces of the cylinders by the heating means.
  • This preheating is desirable to bring the refractory to temperature and avoid too rapid solidification of the cast metal in contact with it at the start of casting. It also makes it possible to avoid thermal shocks too rough on first contact with the liquid metal.
  • this preheating causes a temperature difference between the surface of the refractory directly subjected to heating and its opposite cold surface.
  • This temperature difference causes a differential expansion between the hot surface and the cold surface of the refractory, which causes bending or bending of the entire cassette, even before the start of casting.
  • the seal between the refractory plate and the front surfaces of the cylinders is deteriorated at the start of the casting.
  • This deformation due to the differential expansion of the two faces of the refractory is absorbed in principle during casting after the thermal regime because the refractory plate is then heated on the side of its internal face by the cast metal, which has for more or less compensate for the deformation created at the start by preheating.
  • the overall expansion of the refractory plate remains and the problem of buckling of this plate, due to the fact that it is clamped in its envelope also remains.
  • the invention therefore aims to solve this problem by making a cassette arranged so as to allow the free expansion of the refractory plate, and thus to avoid at least the deformations due to buckling.
  • the refractory plate is preformed so as to reserve a free space between its periphery and the side wall of the envelope, and the cassette is equipped with means for fixing and clamping the refractory plate, with elastic antagonistic action. allowing free expansion in the envelope of the refractory plate during its heating.
  • the elasticity of the means of fixing the refractory plate also makes it possible to ensure that the latter is maintained in the event that the envelope expands more than said refractory plate.
  • said fixing and tightening means comprise screws passing through the peripheral lateral wall of the envelope and provided at their ends with elastic elements fixed to the refractory plate, such as Belleville washers.
  • Fig.1 a continuous pouring device of liquid metal in a free space 1 reserved between two parallel cylinders 2, whose front faces 2a are located in the same vertical plane.
  • a continuous pouring device of liquid metal in a free space 1 reserved between two parallel cylinders 2, whose front faces 2a are located in the same vertical plane.
  • the space 1 is closed by a cassette 3 consisting of a rigid and possibly cooled metal casing 4, in the form of a bowl, open on its side facing the cylinders 2, and a refractory plate or block 5 housed inside the casing 4.
  • a cassette 3 consisting of a rigid and possibly cooled metal casing 4, in the form of a bowl, open on its side facing the cylinders 2, and a refractory plate or block 5 housed inside the casing 4.
  • the latter of rectangular outline in the example shown, has a bottom 4a, parallel to the front faces 2a, and a peripheral side wall 4b bent at right angles, dimensioned to receive the plate 5.
  • the bottom 4a is pierced with an aperture central 6 uncovering a corresponding part of the refractory plate 5, which must be preheated by a burner 7.
  • the refractory plate 5 is preformed so as to reserve a free space 8 between its periphery and the peripheral wall 4b of the casing 4 (the block 5 therefore being in this example rectangular).
  • the cassette 3 is equipped with means for fixing and clamping the refractory plate 5 in the casing 4.
  • these means are constituted by a series of screws 9 passing through the peripheral wall 40 and provided at their ends.
  • elastic elements 11 fixed in abutment on the sides of the refractory plate 5.
  • These elastic elements 11 can advantageously be Belleville washers, distributed as well as the corresponding screws 9 in suitable number around the plate 5, for example at the rate of two per side (Fig. 2).
  • the heating of the refractory plate 5 by the burner 7 or by the contact of the molten metal causes a free expansion of the plate 5 in the free volume 8.
  • the Belleville washers 11 exert on the sides of the block 5 an elastic antagonistic action while by allowing its expansion in directions parallel to its general plane and to that of the front faces 2a. Thanks to this free expansion inside the metal casing 4, the refractory plate 5 is no longer subjected to buckling and the internal face 5a of the plate 5 substantially retains its flatness, which makes it possible to obtain and maintain of the desired seal between the front faces 2a and this internal face 5a. This practically avoids any risk of infiltration of liquid metal between the faces 5a and 2a during the casting.
  • the bottom 4a of the casing 4 may not be perforated and therefore be constituted by a solid sheet, if the preheating is carried out by radiation.
  • the bottom 4a then plays the role of a thermal diffuser to homogenize the supply of heat to the preheated refractory mass 5.
  • the invention is not limited to the arrangement described above by way of example.
  • the side wall 4b of the envelope 4 is not continuous and has only three sides.
  • This arrangement can be used in particular in the case where the front surfaces 2a of the cylinders are axially offset with respect to each other, the refractory plate 5 then being in contact, on the one hand, by its surface 5a, with the face front of one of the cylinders, and secondly, by its edge located on the side where the side wall 4b is interrupted, with the cylindrical surface of the other cylinder; the refractory plate is of course then shaped so that said edge conforms to the curvature of this cylindrical surface.
  • the refractory plate may also include, in the area between the cylinders, a projection penetrating between them, or a hollow.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Handcart (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP90470037A 1989-06-26 1990-06-12 Kassette, bestimmt zum Abschliessen der Stirnseite einer Stranggiessanlage Expired - Lifetime EP0406142B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8908481A FR2652022B1 (fr) 1989-06-26 1989-06-26 Cassette destinee a former une face de fermeture frontale d'un dispositif de coulee continue de metal liquide.
FR8908481 1989-06-26

Publications (2)

Publication Number Publication Date
EP0406142A1 true EP0406142A1 (de) 1991-01-02
EP0406142B1 EP0406142B1 (de) 1993-12-15

Family

ID=9383123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90470037A Expired - Lifetime EP0406142B1 (de) 1989-06-26 1990-06-12 Kassette, bestimmt zum Abschliessen der Stirnseite einer Stranggiessanlage

Country Status (8)

Country Link
US (1) US5318097A (de)
EP (1) EP0406142B1 (de)
JP (1) JP3145386B2 (de)
AT (1) ATE98538T1 (de)
DE (1) DE69005211T2 (de)
DK (1) DK0406142T3 (de)
ES (1) ES2049010T3 (de)
FR (1) FR2652022B1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2721843B1 (fr) * 1994-06-30 1996-08-30 Unisor Sacilor Disposition de coulee continue entre cylindres a parois d'obturation laterale appliquees
KR100578299B1 (ko) * 2005-04-14 2006-05-11 조선내화 주식회사 팽창완충대를 구비한 쌍롤형박판주조장치용 사이드 댐
US7556084B2 (en) * 2006-03-24 2009-07-07 Nucor Corporation Long wear side dams
US8042601B2 (en) * 2006-03-24 2011-10-25 Nucor Corporation Side dam with insert
US7503375B2 (en) * 2006-05-19 2009-03-17 Nucor Corporation Method and apparatus for continuously casting thin strip
JP5837758B2 (ja) 2011-04-27 2015-12-24 キャストリップ・リミテッド・ライアビリティ・カンパニー 双ロール鋳造装置及びその制御方法
US10046384B2 (en) 2015-09-30 2018-08-14 Nucor Corporation Side dam with pocket

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528741A1 (fr) * 1982-06-22 1983-12-23 Didier Werke Ag Appareil de serrage d'une plaque de fermeture sur une fermeture a coulisse d'un orifice de coulee sur un reservoir contenant un bain de fusion
EP0222978A1 (de) * 1985-10-30 1987-05-27 Didier-Werke Ag Feuerfeste Verschleissplatte für Schieberverschlüsse an metallurgischen Gefässen

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730254A (en) * 1970-12-18 1973-05-01 Creusot Loire Roller pair type continuous casting apparatus
JPS57130743A (en) * 1981-02-06 1982-08-13 Mitsubishi Heavy Ind Ltd Method and device for direct rolling type continuous casting
JPS60130450A (ja) * 1983-12-16 1985-07-11 Mitsubishi Heavy Ind Ltd 薄板連続鋳造装置
JPS60166146A (ja) * 1984-02-06 1985-08-29 Mitsubishi Heavy Ind Ltd 薄板連続鋳造装置
JPS6149755A (ja) * 1984-08-17 1986-03-11 Mitsubishi Heavy Ind Ltd 薄板連続鋳造装置
JPS6277155A (ja) * 1985-09-30 1987-04-09 Nippon Steel Corp 双ロ−ル型連続鋳造方法
JPS62156052A (ja) * 1985-12-27 1987-07-11 Kawasaki Steel Corp 端面形状に優れた金属急冷薄帯の製造方法および装置
JPS6326242A (ja) * 1986-07-17 1988-02-03 Nippon Yakin Kogyo Co Ltd 金属薄板帯の直接鋳造装置
JPS6326243A (ja) * 1986-07-17 1988-02-03 Nippon Yakin Kogyo Co Ltd 金属薄板帯の直接鋳造装置
JPS6336955A (ja) * 1986-07-30 1988-02-17 Nippon Yakin Kogyo Co Ltd 金属薄板帯の直接鋳造装置
JPS63101056A (ja) * 1986-10-17 1988-05-06 Kawasaki Steel Corp 急冷金属薄帯の製造方法および装置
US4754802A (en) * 1987-08-05 1988-07-05 Nisshin Steel Co., Ltd. Continuous casting apparatus for steel plate
FR2628993B3 (fr) * 1988-03-25 1990-01-26 Siderurgie Fse Inst Rech Dispositif d'obturation laterale de l'espace de coulee d'une lingotiere de coulee continue entre cylindres
US5027888A (en) * 1989-01-31 1991-07-02 Hitachi Zosen Corporation Method and apparatus for sealing molten metal for a twin-roll type continous casting apparatus
FR2647376B1 (fr) * 1989-05-29 1991-09-13 Siderurgie Fse Inst Rech Dispositif de coulee continue de metal liquide entre deux cylindres

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528741A1 (fr) * 1982-06-22 1983-12-23 Didier Werke Ag Appareil de serrage d'une plaque de fermeture sur une fermeture a coulisse d'un orifice de coulee sur un reservoir contenant un bain de fusion
EP0222978A1 (de) * 1985-10-30 1987-05-27 Didier-Werke Ag Feuerfeste Verschleissplatte für Schieberverschlüsse an metallurgischen Gefässen

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 12, no. 229 (M-714)[3076], 29 juin 1988; & JP-A-63 026 242 (NIPPON YAKIN KOGYO CO., LTD) 03-02-1988 *
PATENT ABSTRACTS OF JAPAN, vol. 12, no. 229 (M-714)[3076], 29 juin 1988; & JP-A-63 026 243 (NIPPON YAKIN KOGYO CO., LTD) 03-02-1988 *
PATENT ABSTRACTS OF JAPAN, vol. 6, no. 228 (M-171)[1106], 13 novembre 1982; & JP-A-57 130 743 (MITSUBISHI JUKOGYO K.K.) 13-08-1982 *

Also Published As

Publication number Publication date
FR2652022B1 (fr) 1994-04-08
JPH0332451A (ja) 1991-02-13
FR2652022A1 (fr) 1991-03-22
EP0406142B1 (de) 1993-12-15
ATE98538T1 (de) 1994-01-15
ES2049010T3 (es) 1994-04-01
DK0406142T3 (da) 1994-04-11
JP3145386B2 (ja) 2001-03-12
DE69005211T2 (de) 1994-07-07
DE69005211D1 (de) 1994-01-27
US5318097A (en) 1994-06-07

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