EP0593383A1 - Vorrichtung zum Stranggiessen mit Doppelrollen von dünnen metallischen Produkten - Google Patents
Vorrichtung zum Stranggiessen mit Doppelrollen von dünnen metallischen Produkten Download PDFInfo
- Publication number
- EP0593383A1 EP0593383A1 EP93470026A EP93470026A EP0593383A1 EP 0593383 A1 EP0593383 A1 EP 0593383A1 EP 93470026 A EP93470026 A EP 93470026A EP 93470026 A EP93470026 A EP 93470026A EP 0593383 A1 EP0593383 A1 EP 0593383A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- walls
- fixed walls
- conductive elements
- counterweight
- cylinders
- 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
Links
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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
- B22D11/0665—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 present invention relates to a continuous casting device between cylinders of thin metallic products, in particular steel.
- Known devices for continuous casting between cylinders comprise two cooled cylinders, with parallel axes, driven in opposite directions, and fixed walls cooperating with the cylinders to define with them a liquid metal casting space.
- Such fixed walls are commonly used to laterally seal the casting space towards the front ends of the cylinders, and to seal it; they are commonly called “lateral closing walls” or "small faces”.
- Certain devices such as that described in document FR-A-2 651 455 also include a kind of fixed riser, of generally rectangular shape, consisting of two longitudinal walls parallel to the axes of the cylinders and in sealed contact with them, and two front walls extending upwards or forming an integral part of the lateral closure walls.
- This enhancement also called a "flyweight" in the aforementioned document and in the following description, has the particular function of delimiting the surface of the cylinder on which the solidification of the cast metal takes place, and thus ensuring the regularity of this solidification, whatever the level of the metal in the counterweight.
- the meniscus of liquid metal is no longer in contact with the cylinders, the risk of entrainment of impurities floating on the meniscus is thus considerably reduced.
- the cast metal is subjected to heat losses on contact with the fixed walls.
- the purpose of the present invention is to provide a solution to the problems mentioned above, to avoid freezing and catching of the metal cast on the fixed walls, and thus to facilitate casting and improve the quality of the product obtained.
- the invention relates to a continuous casting device between cylinders of thin metallic products comprising two cylinders with parallel axes, cooled and driven in rotation, fixed walls of refractory material cooperating with said cylinders to define with them a liquid metal pouring space and heating inductors placed near the fixed walls.
- the device is characterized in that it comprises elements made of conductive material electricity, embedded in said fixed walls of electrically insulating material and that the inductors are arranged so as to heat said elements by induction.
- the invention it is possible to locate the heating in the areas of the fixed walls where said elements are placed, and in particular thanks to the diffusion of heat in these, in wall areas, and therefore of the cast metal. which is nearby, which could not be heated directly by induction.
- the inductors can be further from the casting space and the thickness of the walls increased compared to direct inductive heating according to the prior art.
- the mechanical resistance of the fixed walls is thereby improved, all the more since said elements can be made of a mechanically stronger material than the refractory component of the walls.
- said fixed walls constitute lateral closing walls of the casting space.
- said fixed walls constitute a counterweight in which the conductive elements can in particular be placed at the level of the level provided for the cast metal, and thus locate the heating in the meniscus area, or in the corners of the counterweight, to compensate for the increase in thermal losses in these areas.
- the set of fixed walls 5, 7, 8 defines, with the walls of the cylinders 1, 2, a casting space 9, in which the molten metal 10 is poured during casting, by a casting nozzle of known type and not shown.
- the metal, solidified in contact with the cylinders, is continuously extracted downwards in the form of a strip 11.
- Elements made up of angles 12 of electrically conductive material are embedded in the counterweight 6, at the four corners of the latter and extend vertically above and below the level of the free surface of the liquid metal.
- the walls 7, 8 are made of a thermally and electrically insulating refractory material.
- the angles 12 are made of metal with a high melting point or of an electrically conductive refractory material, such as silicon carbide.
- Heating inductors 14 are placed outside the counterweight 6, and arranged so as to heat the angles 12 by induction.
- these inductors 14 have a "C" shape and are placed at the corners of the counterweight, so that their pole surfaces 16, 18 are respectively opposite the wings 20, 22 of the angles 12 To avoid overloading FIG. 1, a single inductor 14 has been shown there.
- inductors can be used, insofar as they allow inductive heating of the angles 12.
- the latter are preferably inserted in grooves of corresponding dimensions made in the corners of the counterweight.
- the angles can also be embedded in the refractory walls during the manufacture of the counterweight by molding.
- angles heated by induction are brought to high temperature and, by conduction, heat the cast metal located in the corners of the casting space, or at least limit the heat losses.
- An inductor 32 of the "pancake” type that is to say wound in a flat spiral, is placed opposite the plate 30 to heat by induction the conductive plate 26, which will heat by conduction through the plate 28, the cast metal .
- the hard refractory plate 28 is intended to avoid direct contact of the cast metal with the conductive plate 26.
- the insulating refractory plate 30 is intended to avoid heat transfers from the cast metal and from the conductive plate 26 to the outside, and also to avoid excessive heating of the inductor 32.
- FIGS. 5 and 6 a variant of the invention is shown, for heating the cast metal at its free surface, over the entire periphery of the casting space.
- the counterweight 6 comprises, embedded in its walls, a metal belt 34 extending over the entire periphery of the counterweight.
- This belt 34 is formed of a wire mesh embedded in the refractory of the counterweight during its manufacture by molding and serving as a reinforcement reinforcing its mechanical resistance.
- the belt 34 is heated by induction by an inductor 36, for example wound in several turns surrounding the weight at the height of the belt 34.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Rolls And Other Rotary Bodies (AREA)
- General Induction Heating (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9212627 | 1992-10-16 | ||
FR9212627A FR2696960B1 (fr) | 1992-10-16 | 1992-10-16 | Dispositif de coulée continue entre cylindres de produits métalliques minces. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0593383A1 true EP0593383A1 (de) | 1994-04-20 |
EP0593383B1 EP0593383B1 (de) | 1997-03-12 |
Family
ID=9434761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93470026A Expired - Lifetime EP0593383B1 (de) | 1992-10-16 | 1993-10-08 | Vorrichtung zum Stranggiessen mit Doppelrollen von dünnen metallischen Produkten |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0593383B1 (de) |
AT (1) | ATE149893T1 (de) |
DE (2) | DE69308719T2 (de) |
DK (1) | DK0593383T3 (de) |
ES (1) | ES2100508T3 (de) |
FR (1) | FR2696960B1 (de) |
GR (1) | GR3022814T3 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0598212A2 (de) * | 1992-11-11 | 1994-05-25 | Didier-Werke Ag | Einrichtung zum endabmessungsnahen Giessen |
WO1996033829A1 (de) * | 1995-04-28 | 1996-10-31 | Didier-Werke Ag | Verfahren zum induktiven aufheizen eines feuerfesten formteils sowie ein entsprechendes formteil hierfür |
EP0807476A2 (de) * | 1996-05-13 | 1997-11-19 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Verfahren und Vorrichtung zum Giessen von Metallbändern |
FR2787361A1 (fr) * | 1998-12-22 | 2000-06-23 | Usinor | Face laterale d'obturation de l'espace de coulee d'une installation de coulee de bandes minces metalliques |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1525154A (fr) * | 1966-03-11 | 1968-05-17 | Perfectionnements aux busettes de coulée pour la coulée continue de métal ou d'acier ordinaire à l'état liquide | |
JPS6277156A (ja) * | 1985-09-30 | 1987-04-09 | Nippon Steel Corp | 双ロ−ル型連続鋳造装置 |
FR2609914A1 (fr) * | 1987-01-26 | 1988-07-29 | Aubert & Duval Acieries | Busette composite de coulee de metal liquide, notamment pour appareil d'atomisation du metal |
JPH02155543A (ja) * | 1988-12-09 | 1990-06-14 | Hitachi Ltd | 薄鋳片の連続鋳造装置 |
EP0418182A1 (de) * | 1989-09-06 | 1991-03-20 | USINOR SACILOR Société Anonyme | Vorrichtung zum Stranggiessen von dünnen metallischen Produkten zwischen Zylindern |
EP0526718A1 (de) * | 1991-08-05 | 1993-02-10 | Didier-Werke Ag | Verfahren zum induktiven Aufheizen von keramischen Formteilen |
-
1992
- 1992-10-16 FR FR9212627A patent/FR2696960B1/fr not_active Expired - Lifetime
-
1993
- 1993-10-08 DE DE69308719T patent/DE69308719T2/de not_active Expired - Lifetime
- 1993-10-08 ES ES93470026T patent/ES2100508T3/es not_active Expired - Lifetime
- 1993-10-08 AT AT93470026T patent/ATE149893T1/de active
- 1993-10-08 EP EP93470026A patent/EP0593383B1/de not_active Expired - Lifetime
- 1993-10-08 DK DK93470026.1T patent/DK0593383T3/da active
- 1993-10-15 DE DE4335263A patent/DE4335263A1/de not_active Withdrawn
-
1997
- 1997-03-14 GR GR970400488T patent/GR3022814T3/el unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1525154A (fr) * | 1966-03-11 | 1968-05-17 | Perfectionnements aux busettes de coulée pour la coulée continue de métal ou d'acier ordinaire à l'état liquide | |
JPS6277156A (ja) * | 1985-09-30 | 1987-04-09 | Nippon Steel Corp | 双ロ−ル型連続鋳造装置 |
FR2609914A1 (fr) * | 1987-01-26 | 1988-07-29 | Aubert & Duval Acieries | Busette composite de coulee de metal liquide, notamment pour appareil d'atomisation du metal |
JPH02155543A (ja) * | 1988-12-09 | 1990-06-14 | Hitachi Ltd | 薄鋳片の連続鋳造装置 |
EP0418182A1 (de) * | 1989-09-06 | 1991-03-20 | USINOR SACILOR Société Anonyme | Vorrichtung zum Stranggiessen von dünnen metallischen Produkten zwischen Zylindern |
EP0526718A1 (de) * | 1991-08-05 | 1993-02-10 | Didier-Werke Ag | Verfahren zum induktiven Aufheizen von keramischen Formteilen |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 11, no. 278 (M - 623) 9 September 1987 (1987-09-09) * |
PATENT ABSTRACTS OF JAPAN vol. 14, no. 407 (M - 1019)<4350> 4 September 1990 (1990-09-04) * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0598212A2 (de) * | 1992-11-11 | 1994-05-25 | Didier-Werke Ag | Einrichtung zum endabmessungsnahen Giessen |
EP0598212A3 (en) * | 1992-11-11 | 1996-06-12 | Didier Werke Ag | Device for near net shape casting. |
WO1996033829A1 (de) * | 1995-04-28 | 1996-10-31 | Didier-Werke Ag | Verfahren zum induktiven aufheizen eines feuerfesten formteils sowie ein entsprechendes formteil hierfür |
US5901776A (en) * | 1995-04-28 | 1999-05-11 | Didier-Werke Ag | Process for the inductive heating of a fireproof molding and a suitable molding therefor |
US6148903A (en) * | 1995-04-28 | 2000-11-21 | Didier-Werke Ag | Method for the inductive heating of a refractory mold part as well as corresponding mold part for such |
EP0807476A2 (de) * | 1996-05-13 | 1997-11-19 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Verfahren und Vorrichtung zum Giessen von Metallbändern |
EP0807476A3 (de) * | 1996-05-13 | 1998-04-22 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Verfahren und Vorrichtung zum Giessen von Metallbändern |
FR2787361A1 (fr) * | 1998-12-22 | 2000-06-23 | Usinor | Face laterale d'obturation de l'espace de coulee d'une installation de coulee de bandes minces metalliques |
WO2000037199A1 (fr) * | 1998-12-22 | 2000-06-29 | Usinor | Face laterale d'obturation de l'espace de coulee d'une installation de coulee continue de bandes minces metalliques |
Also Published As
Publication number | Publication date |
---|---|
ES2100508T3 (es) | 1997-06-16 |
FR2696960B1 (fr) | 1994-11-25 |
ATE149893T1 (de) | 1997-03-15 |
DE4335263A1 (de) | 1994-04-21 |
EP0593383B1 (de) | 1997-03-12 |
DE69308719D1 (de) | 1997-04-17 |
FR2696960A1 (fr) | 1994-04-22 |
DE69308719T2 (de) | 1997-09-11 |
DK0593383T3 (da) | 1997-09-08 |
GR3022814T3 (en) | 1997-06-30 |
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