EP0767714B1 - Seitenwand für eine stranggiessvorrichtung zum giessen von dünnblechen - Google Patents

Seitenwand für eine stranggiessvorrichtung zum giessen von dünnblechen Download PDF

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Publication number
EP0767714B1
EP0767714B1 EP95924361A EP95924361A EP0767714B1 EP 0767714 B1 EP0767714 B1 EP 0767714B1 EP 95924361 A EP95924361 A EP 95924361A EP 95924361 A EP95924361 A EP 95924361A EP 0767714 B1 EP0767714 B1 EP 0767714B1
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EP
European Patent Office
Prior art keywords
cylinders
plate
lateral face
lateral
face 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.)
Expired - Lifetime
Application number
EP95924361A
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English (en)
French (fr)
Other versions
EP0767714A1 (de
Inventor
Frédéric Caillaud
Philippe Guillo
Jacques Barbe
Luc Vendeville
Pierre Delassus
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.)
Vesuvius France SA
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Vesuvius France 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
Priority claimed from FR9409611A external-priority patent/FR2723013B1/fr
Priority claimed from FR9505535A external-priority patent/FR2722124A1/fr
Application filed by Vesuvius France SA filed Critical Vesuvius France SA
Publication of EP0767714A1 publication Critical patent/EP0767714A1/de
Application granted granted Critical
Publication of EP0767714B1 publication Critical patent/EP0767714B1/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 invention relates to a side face for a continuous sheet metal casting machine. thin according to the preambles of claims 1 and 17. consisting of a frame on which are mounted two movable walls, such as two cylinders rotating in opposite directions, and two lateral faces placed at each of the ends of the cylinders to define a continuous casting mold in which is retained a given amount of liquid metal.
  • the invention also relates to a casting device according to the preamble of the claim 18.
  • a thin sheet continuous casting machine generally has two walls mobile which face each other and which define a mold with mobile walls. Liquid steel coming from the distributor is introduced into this mold via a nozzle appropriate geometry.
  • the side faces consist of a base plate of refractory material, a element made of ceramic material which comes into contact with the friction surface of the end of the cylinders and which is embedded in the base plate.
  • the set is mounted in a metal casing which covers the rear face of the base plate leaving only the ceramic element free. It is the bottom of this envelope which ensures the transmission of the pressure exerted by the mechanical system located at the rear of the side face and which allows the tight application of the side face against cylinders to avoid any leakage of liquid steel between them and the walls side.
  • the heat flow from the liquid metal through the plate of refractory material causes a significant increase in temperature from the bottom of the envelope.
  • this increase in temperature causes a deformation from the bottom, for example a bending.
  • This deformation is responsible, among other things, poor transmission of the pressure exerted by the mechanical system on the back of the refractory plate.
  • the pressure does not does not apply uniformly on the refractory material plate but concentrates in some points of it. For example, if the plate is curved, the bottom of the envelope metallic will only be applied on the refractory material plate by the top of this bulging area.
  • the resulting stress concentration can go up to the rupture of the refractory material plate.
  • the deformation of the envelope can also cause a change in the parallelism of the front face lateral (refractory material) with its rear face (metallic bottom).
  • the friction surface is no longer applied so uniform, that is to say with constant pressure, on the end of the cylinders. This phenomenon can lead to liquid steel infiltration between the cylinder and the surface friction of the lateral face.
  • the present invention specifically relates to a side face for a machine for continuous thin sheet casting which overcomes the disadvantages of the prior art which have just been exposed.
  • This lateral face must make it possible to transmit and distribute equally the application pressure exerted on its rear face so as to avoid any risk of liquid steel leakage. It must also make it possible to ensure a good parallelism between its front face and its rear face.
  • the part metal which allows to fix the side face on the frame of the casting machine continuous consists of a belt which surrounds the plate of refractory material only on its periphery.
  • This solution allows both good geometric support of the material plate refractory, easy fixing of the side face on the frame of the casting machine continuous and good parallelism between the two sides of the side wall whatever temperature.
  • This solution also makes it possible to create a side face entirely of refractory material at the level of all the zones in contact with the liquid steel or with the cylinders, as well as with the pressure application device.
  • the assembly of the metal belt and the refractory plate can be carried out by cementing or hot shrinking.
  • the metal belt and / or the plate of refractory material has grooves or anchors which can be filled with cement so to ensure better retention of the plate of refractory material in the belt.
  • the plate of refractory material is cemented by zone in the metal belt.
  • the fixing cement may also not be placed around the entire perimeter of the room of refractory material, depending on the shape of the metal belt.
  • the differences in expansion between the belt and the plate of refractory material require not to cement the entire periphery of the plate to avoid cracking of this last. Indeed, in this configuration the presence of cement on either side of the level of the cylinder axis causes the plate to tighten at high temperature of refractory material at this level.
  • the belt is made of metal (steel, cast iron or other) whose coefficient of thermal expansion is higher than that of the material refractory which constitutes the plate. As a result, at high temperature, the metal expands more. The belt then causes the material plate to be pulled. refractory, which can go as far as breaking it.
  • the cement used can for example be a silico-aluminous cement with a silicate binder.
  • Her function is to permanently or temporarily hold the material plate refractory in the belt.
  • the flatness of the rear face of refractory material is at least 0.5 mm.
  • the surface of the back side must be completely contained between two parallel planes distant at most 0.5 mm.
  • the refractory material plate can be made in one piece. She can also be carried out in several parts, in particular a friction zone and a central zone only in contact with the liquid steel contained in the mold continuous casting.
  • the central zone is preferably made of a ceramic material with carbon binder.
  • At least part of the friction zone is located below the plane defined by the axes of rotation of each of the two cylinders.
  • the invention also relates to side faces for a metal casting machine.
  • continuous thin sheet made of a frame on which are mounted two cylinders rotating in opposite directions and two removable side faces placed at each of the ends of both cylinders and means for applying with contact pressure the side faces on the ends of the cylinders.
  • the means for applying a contact pressure of the side faces on the ends of the cylinders include a plate that applies on the rear face of the refractory plate without contact with the metal belt of this plate of refractory material, the thickness of the plate being greater than the thickness of the belt.
  • the pressure exerted on the lateral face and intended to ensure a seal between the cylinders and the friction surface of this lateral face is exercised by means of a piece which may be metallic and independent of the face side itself.
  • This plate is of course subjected to the heat flow which crosses the refractory material plate.
  • the elevation of temperature of the metal plate is limited by the fact that an independent insulator (for example a silica foam plate) can be inserted between the push plate and the side face itself and that there is no thermal bridge between the metal belt which holds the plate of refractory material and the plate of thrust which applies pressure to the rear face of the plate of refractory material.
  • the thickness of the metal belt is lower than that of the refractory material plate so that the surface of the belt is recessed from the surface of the refractory material plate.
  • the invention relates to a continuous casting device between cylinders of thin metal products, with two cooled counter-rotating cylinders, two lateral obturation walls and means for supporting and applying pressure said closing walls against the edges of the cylinders, characterized in that each sealing wall is formed by a plate of hard refractory material surrounded a metal belt to which it is linked.
  • Figure 1 a schematic perspective view of a machine for thin sheet metal casting. It has two cylinders, 2 which rotate in opposite directions, as shown schematically by the arrows 4, around horizontal axes 6. Plates 10, applied against the ends of the cylinders, constitute a mold in which the steel liquid is poured.
  • FIG. 2 shows a first embodiment of a side wall for a continuous sheet metal casting machine according to the invention.
  • This wall side designated by the general reference 10, consists of two parts, namely a plate of refractory material 12 and a metal belt 14.
  • the plate of refractory material has a shape which is adapted to that cylinders of the continuous casting machine. It has two large sides substantially in the shape of an arc of a circle whose center of curvature is on the axis central of the casting machine cylinders.
  • the plate 12 has a small side at its lower part and a large side at its upper part.
  • the plate 12 is held by a metal belt 14 which, in the example of shown embodiment, surrounds the plate 12 over its entire periphery, the belt can be mounted in particular by shrinking.
  • the metal belt 14 includes fastening means such as screws, bolts, studs or other means analogues which allow it to be fixed to the frame of the continuous casting machine. Since these fixing means are conventional, they have not been shown on the figure.
  • the plate of refractory material 12 has a thickness which is greater than that of the metal belt 14. In this way the material refractory protrudes on both sides of the belt.
  • the metal belt was set back 3 mm by relation to each of the front and rear faces of refractory material 12. In others terms, the thickness of the refractory material plate was 6 mm greater than that of the metal belt 14.
  • FIG. 3 which shows a sectional view transverse of the metal belt 14 and part of the material plate refractory 12
  • the metal belt 14 has a groove 14a
  • the plate of refractory material has a groove 12a.
  • the grooves 12a and 14a are filled by a cement 16 which maintains the plate 12 in the belt 14.
  • a thrust plate 15 makes it possible to transmit an application force transmitted by application means 17. Note that the thickness of the plate 12 is greater than that of the metal belt 14. In this way there is no bridge between the push plate 15 and the belt, nor between the belt and the edge of cylinder 2.
  • FIG. 4 shows a plate 12 consisting of 2 parts, namely respectively an area 18 comprising the part of the plate working in friction 11 and a central zone 20.
  • the zone of friction 18 is made of a refractory material which has good friction characteristics with a metal, in particular high hardness and good coefficient of friction, for example a material comprising at least 15% of boron nitride.
  • the central area consists of part of the plate area refractory that is in contact with the liquid metal. For this reason she must present very good resistance to corrosion by steel. It can be constituted, by for example, by a ceramic material with carbon binder.
  • the friction zone 18 is consisting of a single element.
  • This element has a substantially Y shape. includes the friction zone 18 which consists of a concentric crown arc to one roller, and a concentric crown arc to the other roller. These two branches of the Y join at their lower part to form a central zone.
  • part of the friction zone is located below the level of the axis 22 of the two cylinders of the casting machine in continuous, shown schematically by a dashed line (see Fig. 1).
  • the end of the friction, located below the axis of the cylinders, in the solidification zone of the sheet ends with a recess 24 of at least 2 mm which can be a chamfer or rounded so that the sheet does not come, after solidification, rub on a heel of refractory material 26 located below the recess 24.
  • edges of the friction zone 18 located on the side of each of the two cylinders has a chamfer 28 or a rounding of at least 2 mm by 2 mm in order to limit the level of mechanical stresses at these edges. In the absence of a chamfer, there is indeed a systematic flaking of the edges which may ultimately generate liquid metal infiltration.
  • FIG. 5 and 6 there is shown in Figures 5 and 6 an alternative embodiment of a side face for a continuous casting machine according to the invention.
  • the area of friction consists of four elements 30 in the form of crown arcs concentric with the cylinders and with a block 32 joined to the crown sections 30.
  • the block 32 includes, like the friction zone 18 of FIG. 3, a part located in below level 22 of the cylinder axis.
  • crown arcs 30 and the central area 20 are held in the metal belt 14 by three cemented zones 34. Indeed the differences in expansion between the metal belt 14 and the refractory materials which constitute the central zone 20 and the elements 30 and 32 respectively impose that not cement the entire periphery of the plate 12 in order to avoid cracking of this last. The rest of the periphery of the plate is lined for example by means of fibers 36.
  • the plate 12 of refractory material comprises an independent rear plate 38 consisting of a non-metallic refractory material.
  • This plate 38 serves as a support for the other elements which have been described previously, namely the crown arcs 30, the central block 32 and the central area 20. All these elements can be simply placed on the plate rear 38 or else they can be fixed on this plate for example by means of a silico-aluminous cement or other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Coating With Molten Metal (AREA)
  • Metal Rolling (AREA)

Claims (18)

  1. Seitenfront für eine Stranggießvorrichtung zum Gießen von Dünnblechen, gebildet durch ein Gestell, auf das zwei gegensinnig drehende Zylinder (2) montiert sind, zwei Seitenwände (10), angeordnet auf jeder der Seiten der Zylinder (2), und Einrichtungen, um die Seitenwände mit Berührungs- bzw. Kontaktdruck auf die Enden der Zylinder zu pressen, wobei die Zylinder mit den Seitenwänden zusammenwirken, um eine Stranggießform zu begrenzen, in der eine bestimmt Menge flüssigen Metalls zurückgehalten wird, und die genannte Seitenfront eine Platte (12) aus nichtmetallischem feuerfestem Material umfaßt, die mit den Enden der beiden Zylinder in Berührung kommt, und einen metallischen Teil (14) aufweist, der ermöglicht, die Seitenfront am Gestell der Stranggießmaschine zu befestigen,
    dadurch gekennzeichnet,
    daß der genannte metallische Teil durch einen Rahmen gebildet wird, der die Platte (12) aus feuerfestem Material nur auf ihrem Rand umgibt.
  2. Seitenfront nach Anspruch 1, dadurch gekennzeichnet, daß der Rahmen (14) und/oder die Platte aus feuerfestem Material (12) Nuten oder Verankerungen (12a, 14a) aufweisen, die mit Zement (16) gefüllt werden können, um einen besseren Halt der feuerfesten Platte (12) in dem Rahmen (14) zu gewährleisten.
  3. Seitenfront nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Platte (12) aus feuerfestem Material mittels Zonen (34) in den Metallrahmen (14) zementiert ist.
  4. Seitenfront nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Planheit bzw. Glattheit der Rückseite der Platte (12) aus feuerfestem Material wenigstens 0,5mm beträgt.
  5. Seitenfront nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Platte (12) aus feuerfestem Material eine Reibungszone (18) und eine zentrale Zone (20) umfaßt, die sich in Kontakt mit dem in der Stranggießmaschine enthaltenen flüssigen Metall befindet.
  6. Seitenfront nach Anspruch 5, dadurch gekennzeichnet, daß die zentrale Zone (20) aus einem keramischen Material mit Kohlenstoffbindemittel hergestellt wird.
  7. Seitenfront nach einem der Ansprüche 5 und 6, dadurch gekennzeichnet, daß ein Teil der Reibungszone (18) sich unterhalb der Ebene befindet, die durch die Rotationsachsen jedes der beiden Zylinder definiert wird.
  8. Seitenfront nach Anspruch 7, dadurch gekennzeichnet, daß der Teil der Reibungszone (18), der sich unterhalb der Ebene befindet, die durch die Rotationsachsen jedes der beiden Zylinder definiert wird, bezüglich der Reibungsebene durch eine Versetzung mit einer Tiefe von wenigstens 2mm endet, wobei diese Versetzung z.B. durch eine Schrägung oder eine Rundung gebildet wird.
  9. Seitenfront nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, daß die Reibungszone (18) wenigstens teilweise durch Elemente (30) gebildet wird, die mit den Zylindern konzentrische Ringbögen bilden.
  10. Seitenfront nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, daß die Parallelität zwischen der Ebene der Oberfläche des mit Reibung arbeitenden Teils der Reibungszone (18) und der Rückseite der feuerfesten Platte wenigstens 0,5mm beträgt.
  11. Seitenfront nach einem der Ansprüche 5 bis 10, dadurch gekennzeichnet, daß die Planheit der Reibungszone (18) wenistens 0,5mm beträgt.
  12. Seitenfront nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Ebene der oberen Fläche des Metallrahmens bezüglich der Reibungsfläche um wenigstens 3mm zurückversetzt ist.
  13. Seitenfront nach einem der Ansprüche 5 bis 12, dadurch gekennzeichnet, daß die dem Ende der Zylinder gegenüberstehende Kante der Reibungszone (18) mit einem Freiraum bzw Freistich von wenigstens 2mm Tiefe endet, wobei dieser Freistich eine Schrägung oder eine Rundung sein kann.
  14. Seitenfront nach einem der Ansprüche 5 bis 13, dadurch gekennzeichnet, daß die Reibungszone (18) aus einem wenigstens 15% Bornitrid (BN) enthaltenden Material hergestellt ist.
  15. Seitenfront nach einem der Ansprüche 5 bis 14, dadurch gekennzeichnet, daß die Reigungszone durch mehrere aneinandergefügte Elemente gebildet wird.
  16. Seitenfront nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß die Platte aus feuerfestem Material eine unabhängige rückwärtige Platte (38) umfaßt, die aus einem nichtmetallischen feuerfesten Material ist und den anderen die Platte bildenden Elementen als Träger dient.
  17. Seitenfront für eine Stranggießvorrichtung zum Gießen von Dünnblechen, gebildet durch ein Gestell, auf das zwei gegensinnig drehende Zylinder (2) montiert sind, zwei demontierbare Seitenwände (10), angeordnet auf jeder der Seiten der beiden Zylinder (2), und Einrichtungen (17), um die Seitenwände (10) mit einem Kontaktdruck auf die Enden der Zylinder (2) zu pressen, wobei die Zylinder (2) mit den Seitenwänden zusammenwirken, um eine Stranggießform zu begrenzen, in der eine bestimmt Menge flüssigen Metalls zurückgehalten wird,
    dadurch gekennzeichnet,
    daß die Einrichtungen (17) zum Ausüben eines Kontaktdrucks der Seitenwände auf die Enden der Zylinder eine Platte (15) umfassen, die gegen die Rückseite der Platte (12) aus feuerfestem Material gepreßt wird, ohne Kontakt mit dem Metallrahmen dieser Platte aus feuerfestem Material (12), wobei die Dicke der Platte (12) größer ist als die Dicke des Rahmens (14).
  18. Zylinder-Stranggießvorrichtung dünner Metallprodukte, zwei gekühlte gegensinnig drehende Zylinder (2), zwei seitliche Verschlußwände und Trag- und Anpreßeinrichtungen besagter Verschlußwände gegen die Schmalseiten bzw. Kanten der Zylinder umfassend,
    dadurch gekennzeichnet,
    daß jede Wand gebildet wird durch eine Platte (12) aus hartem feuerfesten Material, umgeben von einem Metallrahmen (14), mit dem sie verbunden ist.
EP95924361A 1994-06-30 1995-06-23 Seitenwand für eine stranggiessvorrichtung zum giessen von dünnblechen Expired - Lifetime EP0767714B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR9505535 1994-06-30
FR9409611 1994-08-01
FR9409611A FR2723013B1 (fr) 1994-08-01 1994-08-01 Face laterale pour une machine de coulee en continu de tole mince
FR9505535A FR2722124A1 (fr) 1994-06-30 1995-05-11 Dispositif de coulee continue entre cylindres a parois d'obturation laterale appliquees.
PCT/FR1995/000842 WO1996000626A1 (fr) 1994-06-30 1995-06-23 Face laterale pour une machine de coulee en continu de tole mince

Publications (2)

Publication Number Publication Date
EP0767714A1 EP0767714A1 (de) 1997-04-16
EP0767714B1 true EP0767714B1 (de) 1998-05-20

Family

ID=26231342

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Application Number Title Priority Date Filing Date
EP95924361A Expired - Lifetime EP0767714B1 (de) 1994-06-30 1995-06-23 Seitenwand für eine stranggiessvorrichtung zum giessen von dünnblechen

Country Status (15)

Country Link
EP (1) EP0767714B1 (de)
JP (1) JPH10506327A (de)
CN (1) CN1071605C (de)
AT (1) ATE166266T1 (de)
AU (1) AU695332B2 (de)
BR (1) BR9508141A (de)
CA (1) CA2193243C (de)
CZ (1) CZ292908B6 (de)
DE (1) DE69502607T2 (de)
ES (1) ES2118606T3 (de)
HU (1) HU218547B (de)
NO (1) NO313581B1 (de)
PL (1) PL178918B1 (de)
SK (1) SK283307B6 (de)
WO (1) WO1996000626A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2749785B1 (fr) * 1996-06-13 1998-07-24 Usinor Sacilor Face laterale d'obturation pour installation de coulee continue de bandes metalliques entre deux cylindres
FR2755384B1 (fr) * 1996-11-06 1998-11-27 Usinor Sacilor Enduit protecteur pour elements en materiau refractaire d'une lingotiere de coulee continue des metaux, et elements en materiau refractaire protege a l'aide de cet enduit
FR2787360B1 (fr) * 1998-12-21 2001-02-02 Usinor Face laterale pour installation de coulee continue de bandes metalliques
FR2842130B1 (fr) * 2002-07-12 2004-10-15 Usinor Face laterale pour installation de coulee continue de bandes metalliques entre deux cylindres
DE102004007780A1 (de) * 2004-02-18 2005-09-08 Degussa Ag Wäßrige, kolloidale Gasrusssuspension
DE102004060649A1 (de) * 2004-12-16 2006-06-29 Ashland-Südchemie-Kernfest GmbH Hochisolierende und feuerfeste Beschichtungsmassen für Gießformen
DE102007040578A1 (de) * 2007-08-28 2009-03-05 Esk Ceramics Gmbh & Co. Kg Seitenplatte für das Dünnbandgießen von Stahl
US8191610B2 (en) 2008-11-24 2012-06-05 Nucor Corporation Strip casting apparatus with improved side dam
KR20170074301A (ko) * 2015-12-21 2017-06-30 주식회사 포스코 쌍롤식 박판주조기의 에지댐
CN107662357B (zh) * 2017-10-25 2019-10-22 中国农业大学 多级辊压秸秆成型机保压板

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60162557A (ja) * 1984-02-03 1985-08-24 Mitsubishi Heavy Ind Ltd 薄板連続鋳造装置
JPS6326241A (ja) * 1986-07-17 1988-02-03 Nippon Yakin Kogyo Co Ltd 金属薄板帯の直接鋳造装置
US5091606A (en) * 1988-04-25 1992-02-25 Peter J. Balsells Gasket for sealing electromagnetic waves filled with a conductive material
FR2655577B1 (fr) * 1989-12-07 1992-01-24 Siderurgie Fse Inst Rech Installation de coulee continue de produits metalliques minces entre deux cylindres.
JPH03207554A (ja) * 1990-01-05 1991-09-10 Nippon Steel Corp ツインドラム式連続鋳造機のサイド堰
JP2981582B2 (ja) * 1992-02-26 1999-11-22 農林水産省食品総合研究所長 有機酸・糖複合体の製造法
FR2693135B1 (fr) * 1992-07-03 1994-08-19 Usinor Sacilor Installation de coulée continue entre parois mobiles, et procédé de coulée utilisant l'installation.
JPH06326241A (ja) * 1993-05-17 1994-11-25 Fujitsu Ltd 電子部品の梱包方法

Also Published As

Publication number Publication date
EP0767714A1 (de) 1997-04-16
ATE166266T1 (de) 1998-06-15
DE69502607T2 (de) 1998-11-26
SK168096A3 (en) 1998-10-07
WO1996000626A1 (fr) 1996-01-11
PL318137A1 (en) 1997-05-12
CA2193243C (fr) 2005-08-16
AU2890195A (en) 1996-01-25
JPH10506327A (ja) 1998-06-23
NO313581B1 (no) 2002-10-28
CZ292908B6 (cs) 2004-01-14
ES2118606T3 (es) 1998-09-16
CN1071605C (zh) 2001-09-26
SK283307B6 (sk) 2003-05-02
HU218547B (hu) 2000-10-28
HU9603603D0 (en) 1997-02-28
MX9700088A (es) 1997-07-31
AU695332B2 (en) 1998-08-13
NO965622L (no) 1996-12-30
CZ383896A3 (cs) 1998-02-18
NO965622D0 (no) 1996-12-30
HUT76203A (en) 1997-07-28
CA2193243A1 (fr) 1996-01-11
CN1155857A (zh) 1997-07-30
BR9508141A (pt) 1997-11-04
DE69502607D1 (de) 1998-06-25
PL178918B1 (pl) 2000-06-30

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