EP0425402B1 - Process and apparatus for continuous twin-roll casting of thin metallic products - Google Patents
Process and apparatus for continuous twin-roll casting of thin metallic products Download PDFInfo
- Publication number
- EP0425402B1 EP0425402B1 EP90470058A EP90470058A EP0425402B1 EP 0425402 B1 EP0425402 B1 EP 0425402B1 EP 90470058 A EP90470058 A EP 90470058A EP 90470058 A EP90470058 A EP 90470058A EP 0425402 B1 EP0425402 B1 EP 0425402B1
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- EP
- European Patent Office
- Prior art keywords
- rolls
- covering
- metal
- contact
- casting
- 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
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Classifications
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- 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
- B22D11/0665—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating
- B22D11/0671—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating for heating or drying
Definitions
- the invention relates to the field of continuous casting of thin metallic products, particularly steel, by the technique known as casting between two cylinders.
- the solidified metal part on the small faces does not catch on it, it will be laminated by the cylinders, which will cause, if necessary, the formation of defects on the product, or even the blocking of the machine or the deterioration of the cylinders if the clamping force to be provided by the latter to maintain a determined thickness of products is too great.
- the object of the invention is to slow down the cooling of the edges of the product during their solidification, so as to make them more malleable and less prone to hanging against the small faces.
- the subject of the invention is a process for supplying heat during their solidification at the edges of a thin metallic product continuously cast on a machine comprising a casting space defined by two rotating cylinders and two plates of so-called "small faces" lateral obturation, characterized in that a coating intended to react exothermically with the metal which comes into contact with it is applied continuously or intermittently to the portions of the cooled surface of the cylinders close to the small faces .
- Another subject of the invention is a cylinder of a machine for continuous casting of metal products between two cylinders, characterized in that it comprises, in the immediate vicinity of each of its parts intended to be in contact with the small faces, an annular zone comprising a hollow surface engraving promoting the adhesion of a consumable exothermic coating.
- the invention finally relates to a device for continuously casting metal products between two cylinders cooled in rotation, characterized in that it comprises means for applying continuously or discontinuously to the portions of the cooled surface of the cylinders close to the small faces, a coating intended to react exothermically with the metal which comes into contact with it.
- the exothermic coating reacts with the metal which will constitute the edges of the product, and locally raises the temperature of this metal locally, so as to absorb the additional cooling which the edges give the proximity of small faces.
- the material 5 intended to constitute the exothermic coating is contained in containers 6,6 ′, 6 ⁇ , 6 ′′′ from which it flows and is deposited, for example by simple gravity, on the zones of the cylinders 1, 1 ′ Closest to the small faces 2,2 ′.
- the containers 6,6 ′, 6 ⁇ , 6 ′′′ are provided with means 7,7 ′, 7 ⁇ , 7 ′′′ making it possible to control the flow of material 5.
- the zones of the cylinders 8.8 ′, 8 ⁇ , 8 ′′′ closest to the small faces are thus each coated with a band 9.9 ′, 9 ⁇ , 9 ′′′ with an exothermic coating.
- Each of these areas is approximately 10 mm wide, and is located on the edges of the cylinders if the small faces are pressed against the ends of the cylinders.
- the adhesion of the coating is favored if the zones 8,8 ′, 8 ⁇ , 8 ′′′ have a hollow surface engraving, such as a multiplicity of cells, as symbolized in the figure, serving as a receptacle for the coating.
- This coating consists of a product capable of reacting rapidly in an exothermic manner on contact with the liquid metal. It can, for example, essentially contain metallic elements such as aluminum, silicon or calcium, the simple dissolution of which in liquid steel is exothermic. This effect is further accentuated if the liquid steel is incompletely deoxidized, which allows the metallic elements to react with the oxygen dissolved in the metal, a reaction which is itself exothermic. These metallic elements can also be mixed with oxides reducible by them at high temperature, such as iron and / or manganese oxides. Thus, the deoxidizers can continue to react exothermically even after the coating has been covered by the skin of solidified metal, to which heat is then transmitted.
- metallic elements such as aluminum, silicon or calcium
- Cohesion of the coating can be ensured by an inorganic or organic binder facilitating its application to the edges of the cylinders by appropriate means and its adhesion to the cylinders until it comes into contact with the metal.
- Deposit by simple gravity can thus be replaced by deposit by projection or by coating.
- the coating is regenerated by said application means continuously, or discontinuously if is not fully consumed after a single contact with the metal.
- the binder must have as low a calorific capacity as possible in order not to reduce the effectiveness of exothermic products too much.
- the invention is also applicable to machines provided with so-called “translatable” cylinders making it possible to vary the width of the product by moving the cylinders parallel to one another between two castings or during a casting.
- the coating application means must be mobile in order to be able to follow the movements of the edges of the product.
Abstract
Description
L'invention concerne le domaine de la coulée continue de produits métalliques minces, particulièrement en acier, par la technique dite de coulée entre deux cylindres.The invention relates to the field of continuous casting of thin metallic products, particularly steel, by the technique known as casting between two cylinders.
On rappelle que cette technique consiste schématiquement à utiliser une machine comprenant :
- deux cylindres disposés côte à côte, tournant en sens opposés, de préférence en cuivre ou en alliage de cuivre, énergiquement refroidis par circulation d'eau. Ces cylindres définissent entre eux un espace de coulée dans lequel le métal en fusion, qui est introduit continûment, se solidifie au contact des parois froides des cylindres afin de pouvoir être extrait sous forme d'un produit déjà complètement solidifé au niveau du col entre les cylindres ou au voisinage immédiat du col ;
- et deux plaques latérales fixes, assurant la fermeture étanche de l'espace de coulée aux extrémités des cylindres. Ces plaques, dont la partie au contact du métal coulé est habituellement en matériau réfractaire, seront désignées dans la suite du texte par l'expression habituelle "petites faces".
- two cylinders arranged side by side, rotating in opposite directions, preferably made of copper or a copper alloy, vigorously cooled by circulation of water. These cylinders define between them a casting space in which the molten metal, which is introduced continuously, solidifies on contact with the cold walls of the cylinders so that it can be extracted in the form of a product already completely solidified at the neck between the cylinders or in the immediate vicinity of the neck;
- and two fixed side plates, ensuring the tight closure of the casting space at the ends of the cylinders. These plates, the part of which in contact with the cast metal is usually made of refractory material, will be designated in the remainder of the text by the usual expression "small faces".
L'une des difficultés rencontrées lors de l'application de ce procédé à la coulée continue d'ébauches minces de métaux à point de fusion élevé, tels que l'acier, réside dans une solidification parasite du métal qui se produit au contact des petites faces dans la zone supérieure de la lingotière, c'est-à-dire au-dessus du col (plan passant par les axes des cylindres). Si cette solidification est trop importante, il y a risque d'accrochage de la peau solidifiée sur les petites faces. Ceci peut conduire, lors de l'extraction du produit de la lingotière, à une déchirure de la peau à peine solidifiée et à un épanchement du métal liquide en dessous de la lingotière (phénomène appelé "percée"). Si la partie métallique solidifiée sur les petites faces ne s'y accroche pas, elle sera laminée par les cylindres, ce qui entraînera, le cas échéant, la formation de défauts sur le produit, voire le blocage de la machine ou la détérioration des cylindres si l'effort de serrage à fournir par ces derniers pour maintenir une épaisseur de produits déterminée est trop important.One of the difficulties encountered when applying this process to the continuous casting of thin blanks of metals with a high melting point, such as steel, lies in a parasitic solidification of the metal which occurs in contact with small faces in the upper zone of the ingot mold, that is to say above the neck (plane passing through the axes of the cylinders). If this solidification is too great, there is a risk of the solidified skin catching on the small faces. This can lead, during the extraction of the product from the mold, to a tear of the barely solidified skin and to an effusion of the liquid metal below the mold (phenomenon called "breakthrough"). If the solidified metal part on the small faces does not catch on it, it will be laminated by the cylinders, which will cause, if necessary, the formation of defects on the product, or even the blocking of the machine or the deterioration of the cylinders if the clamping force to be provided by the latter to maintain a determined thickness of products is too great.
Ces difficultés sont aggravées en début de coulée, puisque le métal liquide entre alors en contact avec des petites faces froides.These difficulties are aggravated at the start of casting, since the liquid metal then comes into contact with small cold faces.
Il est donc souhaitable de retarder la solidification du produit 2 au voisinage des petites faces. A cet effet, des dispositifs assurant un réchauffage des petites faces avant et/ou pendant la coulée ont été proposés, par exemple dans la demande de Certificat d'Utilité FR 8804471 au nom de la demanderesse. De tels dispositifs impliquent une construction et une mise en oeuvre de la machine nécessitant une parfaite maîtrise technologique.It is therefore desirable to delay the solidification of
Une autre solution consiste à intervenir dans le refroidissement du métal au niveau du contact de ce dernier avec les cylindres de coulée dans les zones avoisinant les petites faces, par exemple en chauffant au moyen de brûleurs les portions des cylindres qui vont entrer en contact avec le métal formant les rives du produit (demande de brevet JP 6209751)Another solution consists in intervening in the cooling of the metal at the level of the contact of the latter with the casting rolls in the areas surrounding the small faces, for example by heating by means of burners the portions of the rolls which will come into contact with the metal forming the edges of the product (patent application JP 6209751)
Il est également connu de la demande de brevet JP6221444 d'employer un mannequin recouvert d'un matériau isolant ou exothermique qui obture le fond de l'espace de coulée pendant le remplissage initial.It is also known from patent application JP6221444 to use a mannequin covered with an insulating or exothermic material which closes the bottom of the pouring space during the initial filling.
Le but de l'invention est de ralentir le refroidissement des rives du produit pendant leur solidification, de manière à les rendre plus malléables et moins sujettes à l'accrochage contre les petites faces.The object of the invention is to slow down the cooling of the edges of the product during their solidification, so as to make them more malleable and less prone to hanging against the small faces.
A cet effet, l'invention a pour objet un procédé d'apport de chaleur pendant leur solidification aux rives d'un produit métallique mince coulé en continu sur une machine comportant un espace de coulée défini par deux cylindres en rotation et deux plaques d'obturation latérales dites "petites faces", caractérisé en ce qu'on applique de façon continue ou intermittente sur les portions de la surface refroidie des cylindres proches des petites faces un revêtement destiné à réagir de façon exothermique avec le métal qui entre en contact avec lui.To this end, the subject of the invention is a process for supplying heat during their solidification at the edges of a thin metallic product continuously cast on a machine comprising a casting space defined by two rotating cylinders and two plates of so-called "small faces" lateral obturation, characterized in that a coating intended to react exothermically with the metal which comes into contact with it is applied continuously or intermittently to the portions of the cooled surface of the cylinders close to the small faces .
L'invention a également pour objet un cylindre de machine de coulée continue de produits métalliques entre deux cylindres, caractérisé en ce qu'il comporte, au voisinage immédiat de chacune des ses parties destinées à être contact avec les petites faces, une zone annulaire comportant une gravure superficielle en creux favorisant l'adhérence d'un revêtement exothermique consommable.Another subject of the invention is a cylinder of a machine for continuous casting of metal products between two cylinders, characterized in that it comprises, in the immediate vicinity of each of its parts intended to be in contact with the small faces, an annular zone comprising a hollow surface engraving promoting the adhesion of a consumable exothermic coating.
L'invention a enfin pour objet un dispositif de coulée continue de produits métalliques entre deux cylindres refroidis en rotation, caractérisé en ce qu'il comprend des moyens d'application de façon continue ou discontinue sur les portions de la surface refroidie des cylindres proches des petites faces, d'un revêtement destiné à réagir de façon exothermique avec le métal qui entre en contact avec lui.The invention finally relates to a device for continuously casting metal products between two cylinders cooled in rotation, characterized in that it comprises means for applying continuously or discontinuously to the portions of the cooled surface of the cylinders close to the small faces, a coating intended to react exothermically with the metal which comes into contact with it.
Comme on l'aura compris, le revêtement exothermique réagit avec le métal qui va constituer les rives du produit, et élève localement à cet endroit la température de ce métal, de manière à absorber le surcroît de refroidissement que procure aux rives la proximité des petites faces.As will be understood, the exothermic coating reacts with the metal which will constitute the edges of the product, and locally raises the temperature of this metal locally, so as to absorb the additional cooling which the edges give the proximity of small faces.
La figure unique annexée, montrant schématiquement en perspective la partie supérieure d'une machine de coulée continue entre cylindres modifiée selon l'invention, permettra au besoin de mieux comprendre l'invention. On reconnaît sur cette figure les cylindres refroidis 1,1′ en rotation en sens inverses autour de deux axes X-X et Y-Y parallèles situés dans un même plan horizontal. Ils définissent entre eux un espace de coulée, obturé latéralement par des petites faces 2, 2′. L'acier liquide 3, déversé en continu à partir d'un récipient d'alimentation non représenté, remplit cet espace de coulée où il se solidifie pour former un produit 4 extrait vers le bas de la machine sous l'effet de la rotation des cylindres. Le matériau 5 destiné à constituer le revêtement exothermique est contenu dans des récipients 6,6′,6˝,6‴ à partir desquels il s'écoule et vient se déposer, par exemple par simple gravité, sur les zones des cylindres 1, 1′ les plus proches des petites faces 2,2′. Les récipients 6,6′,6˝,6‴ sont munis de moyens 7,7′,7˝,7‴ permettant de contrôler le débit du matériau 5. Préalablement à leur entrée en contact avec l'acier liquide, les zones des cylindres 8,8′,8˝,8‴ les plus proches des petites faces sont ainsi revêtues chacune d'une bande 9,9′,9˝,9‴ d'un revêtement exothermique. Chacune de ces zones a environ 10 mm de large, et est située sur les bords des cylindres si les petites faces sont plaquées contre les extrémités des cylindres. L'adhérence du revêtement est favorisée si les zones 8,8′,8˝,8‴ comportent une gravure superficielle en creux, telle qu'une multiplicité d'alvéoles, comme symbolisé sur la figure, servant de receptacle au revêtement.The single appended figure, schematically showing in perspective the upper part of a continuous casting machine between cylinders modified according to the invention, will allow the need to better understand the invention. We recognize in this figure the cooled
Ce revêtement est constitué par un produit susceptible de réagir rapidement de manière exothermique au contact du métal liquide. Il peut, par exemple, contenir essentiellement des éléments métalliques tels que de l'aluminium, du silicium ou du calcium, dont la simple dissolution dans l'acier liquide est exothermique. Cet effet est encore accentué si l'acier liquide est incomplètement désoxydé, ce qui permet aux éléments métalliques de réagir avec l'oxygène dissous dans le métal, réaction qui est elle-même exothermique. Ces éléments' métalliques peuvent également être mélangés à des oxydes réductibles par eux à haute température, tels que des oxydes de fer et/ou de manganèse. Ainsi, les désoxydants pourront continuer à réagir exothermiquement même après que le revêtement ait été recouvert par la peau de métal solidifié, à laquelle la chaleur est alors transmise.This coating consists of a product capable of reacting rapidly in an exothermic manner on contact with the liquid metal. It can, for example, essentially contain metallic elements such as aluminum, silicon or calcium, the simple dissolution of which in liquid steel is exothermic. This effect is further accentuated if the liquid steel is incompletely deoxidized, which allows the metallic elements to react with the oxygen dissolved in the metal, a reaction which is itself exothermic. These metallic elements can also be mixed with oxides reducible by them at high temperature, such as iron and / or manganese oxides. Thus, the deoxidizers can continue to react exothermically even after the coating has been covered by the skin of solidified metal, to which heat is then transmitted.
La cohésion du revêtement peut être assurée par un liant minéral ou organique facilitant son application sur les bords des cylindres par des moyens appropriés et son adhérence sur les cylindres jusqu'à son contact avec le métal. Le dépôt par simple gravité peut ainsi être remplacé par un dépôt par projection ou par enduction. Le revêtement est régénéré par lesdits moyens d'application de façon continue, ou de façon discontinue s'il n'est pas entièrement consommé après une seule mise en contact avec le métal. Le liant doit avoir une capacité calorifique aussi faible que possible afin de pas trop réduire l'efficacité des produits exothermiques.Cohesion of the coating can be ensured by an inorganic or organic binder facilitating its application to the edges of the cylinders by appropriate means and its adhesion to the cylinders until it comes into contact with the metal. Deposit by simple gravity can thus be replaced by deposit by projection or by coating. The coating is regenerated by said application means continuously, or discontinuously if is not fully consumed after a single contact with the metal. The binder must have as low a calorific capacity as possible in order not to reduce the effectiveness of exothermic products too much.
La dissolution et la réaction de la poudre et de son liant au sein du métal peuvent entraîner une modification locale de la composition de l'acier formant les rives par rapport au reste du produit. Mais comme les rives des produits minces coulés entre cylindre présentent généralement des irrégularités de forme et de structure rendant souvent leur chutage nécessaire, cette pollution ne constitue pas un grave inconvénient.The dissolution and the reaction of the powder and its binder within the metal can cause a local modification of the composition of the steel forming the strands compared to the rest of the product. However, since the edges of thin products poured between cylinders generally have irregularities in shape and structure, often making it necessary to drop them, this pollution does not constitute a serious drawback.
L'invention est également applicable aux machines munies de cylindres dits "translatables" permettant de faire varier la largeur du produit par déplacement des cylindres parallèlement l'un à l'autre entre deux coulées ou pendant une coulée. Dans ce cas, les moyens d'application du revêtement doivent être mobiles afin de pouvoir suivre les déplacements des rives du produit.The invention is also applicable to machines provided with so-called "translatable" cylinders making it possible to vary the width of the product by moving the cylinders parallel to one another between two castings or during a casting. In this case, the coating application means must be mobile in order to be able to follow the movements of the edges of the product.
Claims (10)
- Method of supplying heat to the solidifying edges of a thin metal product continuously cast on a machine comprising a casting space defined by two rotating rolls and two lateral sealing plates called "small walls", characterized in that a covering of consumable material, intended to react exothermically with the metal which comes into contact with it, is applied continuously or intermittently to those portions of the cooled surface of the rolls close to the small walls.
- Method according to Claim 1, characterized in that the said covering includes elements for deoxidizing the liquid steel, such as aluminium, silicon, calcium.
- Method according to Claim 2, characterized in that the said covering also includes oxides which can be reduced by the said oxidizing agents, such as oxides of iron or of manganese.
- Method according to one of Claims 1 to 3, characterized in that the active elements of the said covering are in a pulverulent form and are mixed with an organic or inorganic binder.
- Roll for a machine for continuous casting of metal products between two rolls, characterized in that it comprises, in the immediate vicinity of each of its parts intended to be in contact with the small walls, an annular zone comprising surface etching in the form of hollows, promoting the adhesion of a consumable exothermic covering.
- Roll according to Claim 5, characterized in that the said etching in the form of hollows forms a multiplicity of cavities.
- Apparatus for continuous casting of metal products, including a casting space defined by two cooled rotating rolls and two lateral sealing plates called "small walls", characterized in that it includes means for continuously or intermittently applying a covering, intended to react exothermically with the metal which comes into contact with it, to those portions of the cooled surface of the rolls close to the small walls.
- Apparatus according to Claim 7, characterized in that the rolls are of the type defined in Claim 5 or 6.
- Apparatus according to Claim 7 or 8, characterized in that the said covering is applied to the surface of the rolls by spraying.
- Apparatus according to Claim 7 or 8, characterized in that the said covering is applied to the surface of the rolls by coating.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8914251A FR2653693A1 (en) | 1989-10-27 | 1989-10-27 | METHOD AND DEVICE FOR CONTINUOUS CASTING THIN METAL PRODUCTS BETWEEN TWO CYLINDERS. |
| FR8914251 | 1989-10-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0425402A1 EP0425402A1 (en) | 1991-05-02 |
| EP0425402B1 true EP0425402B1 (en) | 1995-08-16 |
Family
ID=9386947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90470058A Expired - Lifetime EP0425402B1 (en) | 1989-10-27 | 1990-10-11 | Process and apparatus for continuous twin-roll casting of thin metallic products |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US5117896A (en) |
| EP (1) | EP0425402B1 (en) |
| JP (1) | JPH03155438A (en) |
| AT (1) | ATE126459T1 (en) |
| AU (1) | AU634297B2 (en) |
| CA (1) | CA2028546A1 (en) |
| DE (1) | DE69021682T2 (en) |
| DK (1) | DK0425402T3 (en) |
| ES (1) | ES2076348T3 (en) |
| FI (1) | FI90834C (en) |
| FR (1) | FR2653693A1 (en) |
| GR (1) | GR3017478T3 (en) |
| IE (1) | IE903804A1 (en) |
| NO (1) | NO904618L (en) |
| PT (1) | PT95708A (en) |
| ZA (1) | ZA908591B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4014593B2 (en) * | 2004-11-15 | 2007-11-28 | 三菱日立製鉄機械株式会社 | Twin roll type continuous casting machine and twin roll type continuous casting method |
| AU2008100847A4 (en) * | 2007-10-12 | 2008-10-09 | Bluescope Steel Limited | Method of forming textured casting rolls with diamond engraving |
| US10046384B2 (en) | 2015-09-30 | 2018-08-14 | Nucor Corporation | Side dam with pocket |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0413650A1 (en) * | 1989-08-18 | 1991-02-20 | USINOR SACILOR Société Anonyme | Process and apparatus for continuous casting thin metallic products |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US690917A (en) * | 1899-10-14 | 1902-01-14 | Carl Wilhelm Bildt | Apparatus for continuous rolling direct from fluid metal. |
| US1947493A (en) * | 1931-07-17 | 1934-02-20 | Rose Engle Company | Coating of machine elements |
| US2314902A (en) * | 1940-04-16 | 1943-03-30 | Metallizing Engineering Compan | Method for causing sprayed metal to adhere to metal surfaces |
| FR1364717A (en) * | 1963-05-14 | 1964-06-26 | Duralumin | Method and machine for casting allowing the improvement of the surface condition and blanks obtained by this method |
| SU846076A1 (en) * | 1978-11-24 | 1981-07-15 | Научно-Исследовательский Институттяжелого Машиностроения Производствен-Ного Объединения "Уралмаш" | Machine for continuous casting of sheet work |
| JPS58179543A (en) * | 1982-04-13 | 1983-10-20 | Mitsubishi Heavy Ind Ltd | Continuous casting device of thin metallic plate |
| JPS58187244A (en) * | 1982-04-23 | 1983-11-01 | Hitachi Zosen Corp | Formation of shell in continuous casting installation for ingot |
| JPS59199150A (en) * | 1983-04-28 | 1984-11-12 | Kawasaki Steel Corp | Casting method of thin billet by continuous casting machine for thin billet |
| JPS611451A (en) * | 1984-06-12 | 1986-01-07 | Ishikawajima Harima Heavy Ind Co Ltd | Method and equipment for continuous casting |
| JPS61162249A (en) * | 1985-01-11 | 1986-07-22 | Mitsubishi Heavy Ind Ltd | Continuous casting device for thin sheet |
| JPS62214A (en) * | 1985-06-24 | 1987-01-06 | 井関農機株式会社 | Cutter mount apparatus |
| JPH0698464B2 (en) * | 1987-01-07 | 1994-12-07 | 三菱重工業株式会社 | Belt deformation prevention device for belt type continuous casting machine |
| JPH0712526B2 (en) * | 1987-04-08 | 1995-02-15 | 日新製鋼株式会社 | Thin plate continuous casting machine |
| JP2636244B2 (en) * | 1987-07-03 | 1997-07-30 | セイコーエプソン株式会社 | Optical head for magneto-optical storage |
| JPS6417782A (en) * | 1987-07-13 | 1989-01-20 | Hitachi Elevator Eng & Service | Controller for elevator |
| US4784209A (en) * | 1987-08-06 | 1988-11-15 | Bethlehem Steel Corporation | Continuous casting apparatus |
| JP2558786B2 (en) * | 1988-02-15 | 1996-11-27 | 三菱重工業株式会社 | Belt coating method for belt type continuous casting machine |
| FR2628993B3 (en) * | 1988-03-25 | 1990-01-26 | Siderurgie Fse Inst Rech | DEVICE FOR SIDE-LOCKING THE CASTING SPACE OF A CONTINUOUS CASTING LINGOTIERE BETWEEN CYLINDERS |
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1989
- 1989-10-27 FR FR8914251A patent/FR2653693A1/en active Granted
-
1990
- 1990-10-11 DE DE69021682T patent/DE69021682T2/en not_active Expired - Fee Related
- 1990-10-11 ES ES90470058T patent/ES2076348T3/en not_active Expired - Lifetime
- 1990-10-11 AT AT90470058T patent/ATE126459T1/en not_active IP Right Cessation
- 1990-10-11 DK DK90470058.0T patent/DK0425402T3/en active
- 1990-10-11 EP EP90470058A patent/EP0425402B1/en not_active Expired - Lifetime
- 1990-10-23 IE IE380490A patent/IE903804A1/en unknown
- 1990-10-24 AU AU64926/90A patent/AU634297B2/en not_active Ceased
- 1990-10-25 CA CA002028546A patent/CA2028546A1/en not_active Abandoned
- 1990-10-25 NO NO90904618A patent/NO904618L/en unknown
- 1990-10-26 PT PT95708A patent/PT95708A/en not_active Application Discontinuation
- 1990-10-26 FI FI905293A patent/FI90834C/en not_active IP Right Cessation
- 1990-10-26 JP JP2290610A patent/JPH03155438A/en active Pending
- 1990-10-26 ZA ZA908591A patent/ZA908591B/en unknown
- 1990-10-26 US US07/604,056 patent/US5117896A/en not_active Expired - Lifetime
-
1995
- 1995-09-21 GR GR950402595T patent/GR3017478T3/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0413650A1 (en) * | 1989-08-18 | 1991-02-20 | USINOR SACILOR Société Anonyme | Process and apparatus for continuous casting thin metallic products |
Non-Patent Citations (1)
| Title |
|---|
| & JP-A-1 104 449 (NIPPON STEEL CORP.) 21-04-1989 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0425402A1 (en) | 1991-05-02 |
| AU6492690A (en) | 1991-05-02 |
| JPH03155438A (en) | 1991-07-03 |
| NO904618L (en) | 1991-04-29 |
| ES2076348T3 (en) | 1995-11-01 |
| CA2028546A1 (en) | 1991-04-28 |
| AU634297B2 (en) | 1993-02-18 |
| DE69021682T2 (en) | 1996-02-29 |
| ZA908591B (en) | 1992-06-24 |
| IE903804A1 (en) | 1991-07-17 |
| FI905293A0 (en) | 1990-10-26 |
| FI90834C (en) | 1994-04-11 |
| FR2653693B1 (en) | 1994-04-22 |
| DK0425402T3 (en) | 1996-01-02 |
| DE69021682D1 (en) | 1995-09-21 |
| US5117896A (en) | 1992-06-02 |
| NO904618D0 (en) | 1990-10-25 |
| FR2653693A1 (en) | 1991-05-03 |
| GR3017478T3 (en) | 1995-12-31 |
| FI90834B (en) | 1993-12-31 |
| ATE126459T1 (en) | 1995-09-15 |
| PT95708A (en) | 1991-09-13 |
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