EP0242347A2 - Vorrichtung zum Giessen einer flüssig-festen Mischung - Google Patents

Vorrichtung zum Giessen einer flüssig-festen Mischung Download PDF

Info

Publication number
EP0242347A2
EP0242347A2 EP87870051A EP87870051A EP0242347A2 EP 0242347 A2 EP0242347 A2 EP 0242347A2 EP 87870051 A EP87870051 A EP 87870051A EP 87870051 A EP87870051 A EP 87870051A EP 0242347 A2 EP0242347 A2 EP 0242347A2
Authority
EP
European Patent Office
Prior art keywords
channel
nozzle
metal
steel
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.)
Withdrawn
Application number
EP87870051A
Other languages
English (en)
French (fr)
Other versions
EP0242347A3 (de
Inventor
Raymond D'haeyer
Arlette Etienne
Marios Economopoulos
Stéphan Wilmotte
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.)
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
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 LU86395A external-priority patent/LU86395A1/fr
Priority claimed from LU86687A external-priority patent/LU86687A1/fr
Priority claimed from LU86693A external-priority patent/LU86693A1/fr
Application filed by Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Publication of EP0242347A2 publication Critical patent/EP0242347A2/de
Publication of EP0242347A3 publication Critical patent/EP0242347A3/de
Withdrawn legal-status Critical Current

Links

Images

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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/112—Treating the molten metal by accelerated cooling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/12—Making non-ferrous alloys by processing in a semi-solid state, e.g. holding the alloy in the solid-liquid phase

Definitions

  • the present invention relates to a device for the casting of a metal, in particular steel, in the pasty phase in a continuous casting ingot mold.
  • the continuous casting of steel essentially consists in supplying steel, continuously, an ingot mold of suitable shape intended to form an ingot called slab, bloom or billet, according to the dimensions which it presents.
  • the steel begins to solidify on contact with the cooled walls of the ingot mold, and it is extracted from the bottom of the latter in the form of an ingot the skin of which is solidified to a certain thickness and the core of which is still liquid. solidifies later gradually.
  • the steel which is thus continuously cast comes from a container such as a ladle or, more often, a distribution basket, which is provided, at its lower part, with a casting device generally called a "nozzle". of casting ".
  • this device essentially consists of a refractory brick in which the tap hole is formed and which is equipped with an appropriate system for adjusting or interrupting the pouring jet.
  • the temperature of the steel in the ladle or in the distribution basket is quite clearly higher than its temperature at the start of solidification, that is to say its liquidus temperature.
  • This temperature difference, called overheating is generally of the order of 20 ° C to 40 ° C, and frequently close to 35 ° C.
  • the objective of the present invention is to propose a particular device making it possible to create conditions which lead to the appearance of a pasty phase in the metal, in particular in the steel, during its path between the pocket or the tundish on the one hand and the casting mold continues on the other.
  • the device for the casting of a metal in the pasty phase which is the subject of the present invention, which comprises between a casting container provided with a nozzle and a continuous casting mold, a cooled channel whose upstream end , relative to the direction of flow of the metal, is connected to the outlet of said nozzle and the downstream end of which is provided with means for introducing the molten metal into said ingot mold, is essentially characterized in that said means for introducing comprise a conduit whose lower end ends in a nozzle whose diameter of the outlet section is less than the diameter of the nozzle.
  • This arrangement makes it possible to create, at the outlet of this nozzle, a pressure drop which causes the vertical duct to be filled with liquid steel.
  • this vertical duct has a length sufficient to constitute a column of liquid steel applying at the outlet of the nozzle a ferrostatic pressure capable of ensuring at the nozzle a flow rate equal to the flow rate of the nozzle.
  • the geometric characteristics of said means for introducing the liquid steel into the ingot mold are such that the liquid steel does not entirely fill the interior space of the said channel.
  • said channel is inclined relative to the horizontal by an angle between 5 ° and 80 °, its outlet section being located at a level lower than that of its inlet section.
  • This angle of inclination must be at least 5 °, in order to prevent the liquid steel from freezing in the channel; however, it does not exceed 80 °, so as to allow the desired cooling of the steel.
  • the channel inclined to the horizontal is preferably rectilinear and that the mold is horizontally spaced from the nozzle by a distance corresponding to the length of this channel. It would not, however, depart from the scope of the invention to give this channel any other configuration, for example an annular shape, allowing the ingot mold to be brought closer to the nozzle and possibly to bring the ingot mold under the nozzle, in alignment along a vertical axis. common. Such a configuration would have the additional advantage of reducing the transverse size of the device.
  • the casting device comprises means for introducing a protective gas inside said channel.
  • these means consist of at least one opening made in the vicinity of the downstream end of said channel; this opening is connected, by means known per se, to a source of protective gas such as argon.
  • the shielding gas introduced through said opening sweeps the part of the interior of the channel which is not occupied by the liquid steel. Liquid steel is thus protected from contact with ambient air as it travels through the channel and there is therefore practically no risk of oxidation.
  • the device of the invention advantageously comprises means for varying the pressure of said gas inside said channel, in order to regulate the flow of metal during casting.
  • said channel is constituted by a tubular conduit having an inner section greater than the outlet section of said nozzle.
  • the interior section of said channel is advantageously at least double the outlet section of the nozzle. This difference in section makes it possible to reduce the risks of clogging of the channel by solidified metal.
  • This tubular conduit can be a steel tube energetically cooled with water. It must then be replaced frequently to avoid the risk of explosion in the event of the tube breaking through and contact between the liquid steel and the cooling water.
  • This tubular conduit can also be made of another material, resistant to '' erosion by liquid steel, such as a sintered material; in this case, the tubular conduit is more expensive than a steel tube, but its replacement will be less frequent.
  • said channel has an open section and it is provided internally with a lining of refractory material.
  • the channel consists of a channel provided with a lining of refractory material and a gas-tight vault equipped with means for introducing and discharging a gaseous agent, such as a protective gas.
  • This vault is intended to prevent any contact of the liquid steel with the ambient air, and to delimit, above the liquid steel, a space in which a protective gas such as argon can circulate.
  • this vault is provided externally, over at least part of its length, with air cooling means, in particular cooling fins.
  • These fins and, more generally, these air cooling means are advantageously surrounded by an envelope in which is circulated, in particular between the fins, an air current with adjustable flow rate making it possible to vary the intensity of said cooling.
  • the cross section of the channel can have any shape without departing from the scope of the present invention.
  • the channel it has been found to be advantageous for the channel to consist of two walls, preferably planar, intersecting along a longitudinal edge.
  • the walls of the channel can advantageously form an angle between 45 ° and 135 °, and preferably close to 90 °. In the case where said walls are not planar, this angle would be that which the planes tangent to the walls would form along said longitudinal edge.
  • the channel is usually arranged so that its bisector plane is vertical; it can however be rotated about an axis parallel to the aforementioned longitudinal edge so as to vary the surface of liquid steel subject to cooling by radiation.
  • said channel has an additional longitudinal wall, substantially vertical, disposed inside the channel where it is connected to the bottom and where it can be moved transversely so as to vary the passage section of said channel.
  • this movable wall it is possible either to vary the surface of liquid steel subject to radiation cooling or to cast the steel with different flow rates while retaining the same height of liquid steel in the channel.
  • At least one region of the bottom of said channel is made of a material having a high heat conductivity, said region of the bottom of the channel is subjected to intense cooling and at least part of said region is not lined with refractory material.
  • This region is advantageously located near the upstream end of said canal. It is preferably constituted by a plate of a material having a high heat conductivity, in particular copper, said plate being provided with water cooling means. the interruption of the refractory lining in said region normally leaves it without protection. It may nevertheless prove advantageous to deposit a thin film of a refractory material, in particular ZrO2, in order to lower the working temperature of the copper while only reducing the efficiency and intensity of the cooling very slightly.
  • the part of said region which does not have a refractory lining forms a zone preferably extending over the entire width of the bottom of the channel.
  • the device of the invention may also include means for adjusting the inclination of the channel, making it possible to take into account factors such as the composition and the temperature of the metal to be cast in order to obtain the desired pasty phase.
  • the casting device according to the invention may include means for rotating said channel around its longitudinal axis.
  • the speed of rotation of the channel around the longitudinal axis can obviously vary depending on various factors such as the composition or the initial temperature of the metal to be cast. In the context of steel casting, this speed of rotation is preferably between 0.1 t / s and 5 t / s.
  • the channel is preferably constituted by a tubular conduit having a section large enough not to be filled by the liquid metal which circulates there.
  • the tubular conduit preferably has a circular section, in order to ensure as uniform lateral drive of the metal as possible during the rotational movement. This rotational movement increases the heat exchange surface between the tubular conduit and the liquid metal; it also causes agitation of the liquid metal, which increases the heat exchange coefficient inside the tubular conduit.
  • the ladle 1 containing the liquid steel 2 is provided with a nozzle 3 which has a diameter D1.
  • It is a nozzle of known type, made of refractory material, which is not part of the present invention.
  • the nozzle 3 opens into an elbow 4 formed in a refractory brick 5, the nozzle fitting tightly to the inlet of this elbow 4.
  • the refractory brick 5 is connected to the upstream end of a channel 6, slightly inclined on the horizontal, equipped with a cooling circuit 7.
  • the channel 6 can be made of steel; it must then be replaced after each pour; it can also be made of a sintered material based on (ZrO2) and it can then be used for several casting operations.
  • This channel 6 has a larger internal section than that of the nozzle 3, in order to reduce the risks of clogging of the channel 6 with solidified steel.
  • the cooling agent for example water or a water mist, preferably enters this circuit at the downstream end of the channel 6 and leaves it at the upstream end.
  • a vertical conduit 8 made of refractory material, which is connected to the channel 6 by means of an elbow 9.
  • the lower end of the conduit 8 comprises a nozzle 10 whose internal diameter D2 is less than the diameter D1 of the nozzle.
  • the vertical duct 8 opens into the continuous casting mold 11.
  • connection of the channel 6 on the one hand with the refractory brick 5 and on the other hand with the vertical duct 8 are, in a manner known per se, gas and liquid steel.
  • an opening 12 is provided which, by means known per se and not shown, places the interior space of the channel 6 in communication with a source of argon (not shown).
  • the channel 6 has a slight inclination, for example of the order of 5 °.
  • the intensity of the cooling can be modified by varying the flow rate and / or the temperature of the cooling agent, generally the water, which flows through the circuit 7.
  • Stabilization of the steel level in the tubular conduit can be ensured by adjusting the argon pressure. It is thus possible to adjust the size of the heat exchange surface, whatever the pressure drops in the circuit.
  • FIG. 2 shows a general view of a continuous casting installation comprising an open section channel.
  • This installation consists of a ladle 1 fitted with a pouring nozzle 3, a casting device generally designated by 13 and a continuous casting mold 11.
  • the ladle 1, the nozzle 3 and the mold 11 are conventional; they are not part of the invention and will not be described further here.
  • the casting device 13, shown in section along line II of FIG. 3, is made up of a channel 6, inclined at an angle of about 18 ° relative to the horizontal, of a curved portion 4 connecting the nozzle 3 at the entrance to channel 6 and a submerged nozzle 14 opening into the mold 11.
  • the inclined channel 6 is provided with a vault 15, gas-tight, which extends over its entire length.
  • the vault 15 carries cooling fins 16 which are in turn surrounded by an envelope 17.
  • the vault 15 is provided with an inlet and an outlet for protective gas, for example argon, marked respectively 18 and 19
  • envelope 17 has orifices 20, respectively 21, for the inlet and outlet of the cooling air, respectively.
  • the orifices 18 and 19, respectively 20 and 21, are connected to a source of argon, respectively of air, not shown.
  • the portion 4 is curved so as to be connected tangentially on the one hand to the nozzle 3 and on the other hand to the channel 6.
  • This curved portion 4 consists of a metal carcass internally lined with refractory material. Its curvature is determined so as to avoid untimely rebounds of the steel in the channel, when it leaves the nozzle, so that the lining undergoes minimum erosion under the effect of the flow of liquid steel.
  • the nozzle 14 consists, in a manner known per se, of a portion of tube of refractory material intended to immerse in the liquid steel present in the ingot mold 11.
  • FIG. 3 is shown a cross section, along line II-II of FIG. 2, of the casting device, showing the constitution of the channel 6 and of the arch 15.
  • the channel 6 consists of a U-shaped metal channel, comprising a bottom 22 and side walls 22 ⁇ and lined with refractory material 23.
  • the roof 15 is fixed in a gas-tight manner to the metal channel 22; it carries cooling fins 16 surrounded by a closed envelope 17.
  • Figure 4 shows a variant of the device of the invention, in which the cross section of the channel 6 consists of two walls 24, 25 intersecting at an angle of about 90 °.
  • This channel can be rotated around its longitudinal edge represented by the point 0, which causes a variation in the width and consequently in the area of the upper surface of the liquid steel (FIG. 4, a and b).
  • FIG. 5 Another variant of the invention is illustrated in FIG. 5.
  • a vertical longitudinal wall 26 can take several positions by transverse displacement inside the channel 6.
  • This movable wall makes it possible to vary, according to the conditions of the casting. , the height h of steel in the channel and / or the surface area of the upper surface of the liquid steel.
  • the device of the invention therefore makes it possible to flow the steel with little or no overheating without incurring unacceptable losses of metal by solidification in the pocket or in the distribution basket.
  • FIG. 6 schematically illustrates a particularly advantageous variant of the device of the invention, mounted between a casting ladle 1 containing superheated metal and a continuous casting ingot mold 11.
  • This device comprises a channel, generally designated by the reference numeral 13, which consists of a metal bottom 22 and side walls 22 ⁇ also metallic.
  • the metal used for this purpose is preferably steel.
  • the bottom and the walls of the channel are lined with a refractory lining 23, 23 ⁇ .
  • This refroi This is preferably provided by a water circulation circuit, symbolized by the arrows 28 for entering and leaving 29 for the water.
  • the refractory lining 23, 23 ⁇ is interrupted on a part of the upper surface of the plate 27, which is thus exposed directly to contact with the liquid metal. As shown in FIG. 7, this uncovered part of the plate 27 can be (a) an area extending over the entire width of the channel, (b) an area extending over only a fraction of the width, or (c) a plurality of partial zones distributed along the width of the channel and separated by walkways of refractory material.
  • the superheated metal in particular steel, coming from the ladle 1, reaches the upstream portion of the channel 13 where it flows over the refractory lining 23 ⁇ without undergoing significant cooling. It then arrives on the uncoated part of the copper plate 27, where it undergoes intense cooling for a limited time due to the relatively small dimensions of the contact surface.
  • the tests show that, on such a very localized contact surface, the steel instantly loses its overheating, which causes the appearance of solidified particles within the stream of liquid steel. This carries away the solidified particles, which therefore cannot be deposited on the plate 27.
  • the steel continues to be cooled and becomes increasingly rich in solidified particles. It thus acquires the pasty state sought upon entry into the mold 11.
  • This particular device makes it possible to replace the conventional unidirectional flow of heat, that is to say the flow along the thickness of the copper plate, by a bi- or even three-way flow which is clearly more efficient.
  • the heat can only flow according to the thickness of the plate.
  • the flow of heat in the plate takes place at once according to the thickness and parallel to the plane of the surface. This results in an increase in the cross-section offered to the heat flow, and therefore an improvement in the cooling efficiency.
  • the device of the invention offers greater driving flexibility than conventional nozzles, because it allows regulation of the steel flow rate and completely independent cooling regulation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
EP87870051A 1983-02-10 1987-04-15 Vorrichtung zum Giessen einer flüssig-festen Mischung Withdrawn EP0242347A3 (de)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
LU86640 1983-02-10
LU86395A LU86395A1 (fr) 1986-04-16 1986-04-16 Dispositif et procede pour la coulee continue de l'acier
LU86395 1986-04-16
LU86640 1986-10-29
LU86687A LU86687A1 (fr) 1986-11-26 1986-11-26 Dispositif pour la coulee d'un metal en phase pateuse
LU86687 1986-11-26
LU86693 1986-12-01
LU86693A LU86693A1 (fr) 1986-12-01 1986-12-01 Dispositif pour couler un metal en phase pateuse

Publications (2)

Publication Number Publication Date
EP0242347A2 true EP0242347A2 (de) 1987-10-21
EP0242347A3 EP0242347A3 (de) 1988-11-02

Family

ID=27483598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87870051A Withdrawn EP0242347A3 (de) 1983-02-10 1987-04-15 Vorrichtung zum Giessen einer flüssig-festen Mischung

Country Status (1)

Country Link
EP (1) EP0242347A3 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215248A (en) * 1988-02-04 1989-09-20 British Steel Plc Pre-cooling molten metal prior to casting
EP0411329A1 (de) * 1989-07-25 1991-02-06 WEBER S.r.l. Kontinuierliches Giessverfahren für Halbflüssigprodukte und Ofen für das Verfahren
FR2665654A1 (fr) * 1990-08-09 1992-02-14 Armines Machine de coulee sous pression d'un alliage metallique a l'etat thixotropique.
EP0572683A1 (de) * 1992-01-13 1993-12-08 Honda Giken Kogyo Kabushiki Kaisha Verfahren zum Giessen von Aluminiumlegierungen und Gusstücken
US5464053A (en) * 1992-09-29 1995-11-07 Weber S.R.L. Process for producing rheocast ingots, particularly from which to produce high-mechanical-performance die castings
EP0719606A1 (de) * 1994-12-28 1996-07-03 Ahresty Corporation Verfahren zur Herstellung breiartiger Metallschmelze zum Giessen
WO2002055235A1 (de) * 2001-01-09 2002-07-18 Ing. Rauch Fertigungstechnik M.B.H. Verfahren zum bereitstellen einer teilerstarrten legierungssuspension und vorrichtungen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2286218A (en) * 1941-06-25 1942-06-16 James L Martin Pouring spout
CH349755A (de) * 1956-02-06 1960-10-31 Beteiligungs & Patentverw Gmbh Giessrinne zum Vergiessen von Schwermetallen
US3127642A (en) * 1960-03-24 1964-04-07 Centre Nat Rech Metall Process and apparatus for the casting of steel
SU606680A1 (ru) * 1976-07-19 1978-04-20 Центральный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Черной Металлургии Имени И.П.Бардина Устройство дл подвода металла при непрерывной разливке
GB2013856A (en) * 1978-01-25 1979-08-15 Uss Eng & Consult Pouring of molten metal into a continuous caster mould
EP0089196A1 (de) * 1982-03-11 1983-09-21 British Steel Corporation Verfahren zur Formung von Stählen
EP0093528A2 (de) * 1982-05-04 1983-11-09 Alcan International Limited Giessen von Metallen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2286218A (en) * 1941-06-25 1942-06-16 James L Martin Pouring spout
CH349755A (de) * 1956-02-06 1960-10-31 Beteiligungs & Patentverw Gmbh Giessrinne zum Vergiessen von Schwermetallen
US3127642A (en) * 1960-03-24 1964-04-07 Centre Nat Rech Metall Process and apparatus for the casting of steel
SU606680A1 (ru) * 1976-07-19 1978-04-20 Центральный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Черной Металлургии Имени И.П.Бардина Устройство дл подвода металла при непрерывной разливке
GB2013856A (en) * 1978-01-25 1979-08-15 Uss Eng & Consult Pouring of molten metal into a continuous caster mould
EP0089196A1 (de) * 1982-03-11 1983-09-21 British Steel Corporation Verfahren zur Formung von Stählen
EP0093528A2 (de) * 1982-05-04 1983-11-09 Alcan International Limited Giessen von Metallen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, section CH, semaine B13, 10 mai 1979, classe M22, no. 25523; & SU-A-606 680 (BARDIN FERR METALLURGY) 20-04-1978 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215248A (en) * 1988-02-04 1989-09-20 British Steel Plc Pre-cooling molten metal prior to casting
GB2215248B (en) * 1988-02-04 1991-10-16 British Steel Plc Liquid metal processing
EP0411329A1 (de) * 1989-07-25 1991-02-06 WEBER S.r.l. Kontinuierliches Giessverfahren für Halbflüssigprodukte und Ofen für das Verfahren
US5119977A (en) * 1989-07-25 1992-06-09 Weber S.R.L. Continuous semi-liquid casting process and a furnace for performing the process
FR2665654A1 (fr) * 1990-08-09 1992-02-14 Armines Machine de coulee sous pression d'un alliage metallique a l'etat thixotropique.
EP0572683A1 (de) * 1992-01-13 1993-12-08 Honda Giken Kogyo Kabushiki Kaisha Verfahren zum Giessen von Aluminiumlegierungen und Gusstücken
EP0572683A4 (en) * 1992-01-13 1994-06-29 Honda Motor Co Ltd Method for casting aluminum alloy casting and aluminum alloy casting
US5394931A (en) * 1992-01-13 1995-03-07 Honda Giken Kogyo Kabushiki Kaisha Aluminum-based alloy cast product and process for producing the same
US5464053A (en) * 1992-09-29 1995-11-07 Weber S.R.L. Process for producing rheocast ingots, particularly from which to produce high-mechanical-performance die castings
EP0719606A1 (de) * 1994-12-28 1996-07-03 Ahresty Corporation Verfahren zur Herstellung breiartiger Metallschmelze zum Giessen
WO2002055235A1 (de) * 2001-01-09 2002-07-18 Ing. Rauch Fertigungstechnik M.B.H. Verfahren zum bereitstellen einer teilerstarrten legierungssuspension und vorrichtungen

Also Published As

Publication number Publication date
EP0242347A3 (de) 1988-11-02

Similar Documents

Publication Publication Date Title
EP0269180B1 (de) Vorrichtung zum Giessen eines pastenartigen Metalles
EP2099576B1 (de) Hohle strahldüse für das stranggiessen
EP0242347A2 (de) Vorrichtung zum Giessen einer flüssig-festen Mischung
EP0743114B2 (de) Verfahren zur Schmierung der Wände einer Stranggusskokille für Metalle und Kokille zur Durchführung dieses Verfahrens
CA2142420A1 (fr) Procede et dispositif de coulee continue de fils metalliques de tres faible diametre directement a partir de metal liquide
EP0305426A1 (de) Verfahren und vorrichtung zum giessen von flüssigem metall.
CH628544A5 (fr) Procede et installation pour la coulee continue de produits tubulaires.
EP0327526B1 (de) Vorrichtung zum Kühlen eines Metalls während des Giessens
BE906039A (fr) Dispositif et procede pour la coulee d'un metal en phase pateuse.
EP0370934B1 (de) Verfahren und Einrichtung zum Versorgen einer Kokille mit geschmolzenem Metall in einer Stranggiesseinrichtung für dünne Vorblöcke
FR2747061A1 (fr) Lingotiere bi-materiau pour la coulee continue en charge verticale des metaux
EP0527717B1 (de) Verfahren und Vorrichtung zum Stranggiessen einer Metallschmelze
FR2747062A1 (fr) Lingotiere de coulee continue pour la coulee continue en charge verticale des metaux
LU86395A1 (fr) Dispositif et procede pour la coulee continue de l'acier
BE1000221A6 (fr) Dispositif pour la coulee d'un metal en phase pateuse.
FR2704786A3 (fr) Procédé de coulée continue en charge des métaux, notamment de l'acier, et lingotière pour sa mise en Óoeuvre.
EP0452294B1 (de) Verfahren und Vorrichtung zum Stranggiessen eines Metalls
EP0943380A1 (de) Verfahren und Vorrichtung zum Stranggiessen von Metallen
BE1001804A6 (fr) Procede et dispositif de coulee d'un metal en phase pateuse.
EP0511465A2 (de) Elektromagnetische Rühreinrichtung für das Stranggiessen
BE1001405A6 (fr) Dispositif de coulee d'un metal dans une lingotiere de coulee continue.
BE1015358A3 (fr) Procede et dispositif pour la coulee continue en charge d'un metal en fusion.
BE1000227A6 (fr) Dispositif permettant de couler un metal en phase pateuse.
EP0911096B1 (de) Giessdüse für Metallstranggiessvorrichtung, insbesondere für Walzgiessmaschine
FR2525131A1 (fr) Procede et dispositif de fabrication d'un lingot d'acier creux

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT DE ES FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT DE ES FR GB IT

17P Request for examination filed

Effective date: 19890323

17Q First examination report despatched

Effective date: 19900410

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19910312

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WILMOTTE, STEPHAN

Inventor name: ECONOMOPOULOS, MARIOS

Inventor name: ETIENNE, ARLETTE

Inventor name: D'HAEYER, RAYMOND