EP0455619B1 - Vorrichtung zum Metallgiessen und Verfahren zum Betrieb derselben - Google Patents

Vorrichtung zum Metallgiessen und Verfahren zum Betrieb derselben Download PDF

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Publication number
EP0455619B1
EP0455619B1 EP91870068A EP91870068A EP0455619B1 EP 0455619 B1 EP0455619 B1 EP 0455619B1 EP 91870068 A EP91870068 A EP 91870068A EP 91870068 A EP91870068 A EP 91870068A EP 0455619 B1 EP0455619 B1 EP 0455619B1
Authority
EP
European Patent Office
Prior art keywords
distribution element
casting
vertical
metal
elastic systems
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
EP91870068A
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English (en)
French (fr)
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EP0455619A1 (de
Inventor
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
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Centre de Recherches Metallurgiques CRM ASBL
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Publication of EP0455619A1 publication Critical patent/EP0455619A1/de
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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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/112—Treating the molten metal by accelerated cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/60—Pouring-nozzles with heating or cooling means

Definitions

  • the present invention relates to a device for casting a metal, in particular steel in a continuous casting installation. It also relates to a method of using such a device.
  • the device of the invention finds a particularly advantageous application in the so-called "low overheating" casting technique. It may be recalled that, in the field of casting a metal, overheating is the difference existing between the effective temperature of the metal and its temperature at the start of solidification or liquidus temperature.
  • a casting device comprising an ingot mold preceded by a vertical duct cooled externally and provided, inside, with a metal distribution member.
  • This device makes it possible to completely or partially eliminate the overheating of the metal, and even to lead to a "negative overheating", that is to say to a beginning of solidification of the metal and to a casting in the pasty phase.
  • the vertical duct can be provided with a lower tubular extension, also vertical, which plunges into the mold itself. This device does not allow adjustment of the metal casting rate.
  • the main object of the present invention is a device of the aforementioned type, in which simple and effective means are provided for ensuring the adjustment of the metal flow rate and thus overcoming the drawback of the known device.
  • a device for pouring a metal into a mold which comprises a vertical duct disposed between the outlet of the casting container and the inlet of said mold and a distributor member disposed substantially at the inlet of said duct vertical, is characterized in that it is provided with means for vertically moving said distributor member between a high position in which said distributor member closes said outlet of the pouring vessel and a low position in which said distributor member opens a maximum passage section for said metal.
  • said distributor member is rigidly fixed to the vertical duct and means are provided for moving vertically between said high position and said low position, the assembly formed by said vertical duct, a lower extension optional, and said distributor member.
  • said means comprise elastic systems resting on a fixed base and elastically supporting said distributor member, respectively said assembly, as well as mechanisms for controlling the vertical position of said elastic systems.
  • said elastic systems are constituted by helical springs placed vertically, which take support by one end on said fixed base and which support at their other end sockets attached to said assembly.
  • piston-cylinder units such as hydraulic or pneumatic cylinders, the pistons of which can vertically move the sockets of the elastic systems which face them respectively, by deforming the corresponding springs to ensure the vertical displacement of said assembly.
  • Fig. 1 shows a vertical section through a casting device, along two radial half-planes corresponding to the line A-A of FIG. 2.
  • the casting device consists of a pouring nozzle (1), symbolizing a casting container, not shown, of a vertical pipe comprising a refractory section (2) followed by a copper section ( 3), a distribution dome 4 fixed in the refractory section (2), and a pouring tube (5), made of refractory material, which plunges into an ingot mold not shown.
  • the copper section (3) is provided with generally water cooling means, which are shown here by a box (6).
  • the nozzle (1) is placed in a distribution basket delimited at the bottom by a horizontal plate (7).
  • the vertical duct (2,3), the distribution dome (4) and the pouring tube (5) form an integral assembly, movable vertically relative to the nozzle (1); for simplicity, this set will henceforth be called “adjustment group”.
  • the adjustment group may also include conduits (8, 9) for distributing neutral gas, formed respectively in the refractory section (2) and in the distribution dome (4).
  • the adjustment group (2,3,4,5) rests on a frame (10) secured to the horizontal plate (7), by means of elastic supports, generally designated by the numerical references. (11).
  • the elastic supports (11) are preferably three in number, arranged at regular intervals around the periphery of the adjustment group.
  • Each elastic support (11) comprises a sleeve (12) fixed by welding to the box (6), the sleeve having its lower end open and its upper end closed by a horizontal bottom.
  • the sleeve (12) is engaged on a vertical column (13) fixed to the frame (10).
  • a support sleeve (14) In the annular space formed between the sleeve (12) and the column (13), a support sleeve (14), a cage (15) and a helical spring (16) are arranged.
  • the coil spring (16) surrounds the column (13); it rests on the one hand on the frame (10) and on the other hand in the cage (15).
  • a jack (17) preferably hydraulic, which is mounted on the plate (7).
  • This jack (17) comprises a piston (18) movable in the vertical direction between a completely withdrawn position, in which it is not in contact with the bottom of the sleeve (12), and a fully extended position in which it pushes the sleeve (12), compressing the helical spring (16).
  • the plate (7) carrying the jacks (17) supports the frame (10) by means of articulating a side of the frame, for example a hinge (19); it is also provided with a locking system (20), which makes it possible to immobilize the frame (10) in the horizontal position required during casting.
  • Fig. 2 is a plan view which shows the relative arrangement of the various elements constituting the device of the invention around the vertical axis of casting.
  • the nozzle (1) has been removed as well as the plate (7) and the jacks (17,18) which it carries.
  • This device operates in the following manner.
  • the adjustment group (2,3,4,5) is adjusted beforehand in alignment with the nozzle (1).
  • the adjustment group In the situation shown in FIG. 1, the adjustment group is in its highest position, under the effect of the upward thrust exerted by the springs (16). In this position, the distribution dome (4) closes the outlet orifice of the nozzle (1).
  • the pistons (18) are lowered until they touch the upper bottom of the sockets (12) and then push them down by compressing the springs ( 16). This operation has the effect of opening an annular passage section between the nozzle (1) and the distribution dome (4).
  • the metal leaving the nozzle (1) trickles over the distribution dome (4) and it then forms a hollow jet flowing against the inside of the vertical duct (2,3). After having undergone the desired cooling in the section (3), it arrives in the pouring tube (5) from where it flows into the mold not shown.
  • a neutral gas such as argon can be blown through the conduits (8,9), respectively to form a gas seal between the nozzle (1) and the refractory section (2) and to create an overpressure inside the jet metal hollow in the vertical duct (2,3).
  • the locking system (20) is opened and the frame (10) is tilted by pivoting it around the hinge (19). It is then possible to carry out all the work necessary for the adjustment group, including replacing it entirely.
  • the frame (10) is then raised and immobilized again in a horizontal position by means of the locking system (20).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Dental Prosthetics (AREA)
  • Surgical Instruments (AREA)

Claims (9)

  1. Vorrichtung zum Gießen eines Metalles in eine Form, wobei diese Vorrichtung ein zwischen dem Auslauf (1) aus dem Gießgefäß und dem Eintritt in die besagte Form angeordnetes, senkrechtes Rohr (2, 3) sowie ein im wesentlichen am Eingang des besagten senkrechten Rohres (2, 3) angeordnetes Verteilerorgan (4) aufweist, dadurch gekennzeichnet, daß sie mit Mitteln (11, 17, 18) zum senkrechten Verstellen des besagten Verteilerorgans (4) zwischen einer oberen Stellung, bei welcher das besagte Verteilerorgan (4) den besagten Auslauf (1) des Gießgefäßes schließt, und einer unteren Stellung, bei welcher das besagte Verteilerorgan (4) einen maximalen Durchgangsquerschnitt für das besagte Metall öffnet, ausgestattet ist .
  2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß das besagte Verteilerorgan starr an dem besagten senkrechten Rohr (2) befestigt ist und daß Mittel zum senkrechten Verstellen, zwischen besagter oberer Stellung und besagter unterer Stellung, einer Einheit welche das besagte vertikale Rohr (2, 3), eine eventuelle untere Verlängerung (5) des letzteren sowie das besagte Verteilerorgan (4) umfaßt, vorgesehen sind.
  3. Vorrichtung gemäß einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die besagten zum Verstellen dienenden Mittel elastische Systeme (11) aufweisen, welche auf einer ortsfesten Basis (10) aufliegen und welche das besagte Verteilerorgan (4), beziehungsweise die besagte Einheit (2, 3, 4, 5) auf elastische Art und Weise abstützen, sowie Mechanismen (17, 18) zur Steuerung der Höhenstellung der besagten elastischen Systeme (11).
  4. Vorrichtung gemäß Anspruch 3, dadurch gekennzeichnet, daß die besagten elastischen Systeme (11) aus zylindrischen Schraubenfedern (16) bestehen, welche senkrecht angeordnet sind, sich mit dem einen Ende auf der besagten ortsfesten Basis (10) aufstützen und mit ihrem anderen Ende an der besagten Einheit (2, 3, 4, 5) befestigte Hülsen (12) tragen.
  5. Vorrichtung gemäß einem der Ansprüche 3 und 4, dadurch gekennzeichnet, daß die besagten Steuermechanismen aus Kolben-Zylinder-Einheiten bestehen, wie etwa Hubspindeln, welche über den zugehörigen besagten elastischen Systemen (11) angeordnet sind, und daß die Kolben (18) der besagten Steuermechanismen die Hülsen (12) der elastischen Systeme (11), denen sie jeweils gegenüberstehen, senkrecht verstellen können.
  6. Vorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, daß sie Mittel (19) umfaßt zum Artikulieren der einen Seite der Basis (10) gegenüber einer horizontalen Platte (7), welche am unteren Teil eines Zwischen-Gefäßes befestigt ist, sowie Hilfsmittel (20) zum Verriegeln einer anderen Seite der besagten Basis (10) mit einem anderen Teil der Platte (7).
  7. Vorrichtung gemäß einem der Ansprüche 5 und 6, dadurch gekennzeichnet, daß die besagte Platte (7) die besagten Mechanismen (17, 18) zur Steuerung der Höhenstellung der elastischen Systeme (11) trägt.
  8. Verfahren zum Gießen eines Metalles in eine Form unter Zuhilfenahme einer Vorrichtung mit einem senkrechten Rohr (2, 3), welches zwischen dem Auslauf (1) aus einem Gießgefäß und dem Eintritt in die besagte Form angeordnet ist, sowie mit einem Verteilerorgan (4), welches im wesentlichen am Eingang des besagten senkrechten Rohres (2, 3) angeordnet ist, dadurch gekennzeichnet, daß man das besagte Verteilerorgan (4) senkrecht gegenüber dem Auslauf (1) des Gießgefäßes verstellt, dies zwischen einer oberen Stellung, bei welcher das besagte Verteilerorgan (4) den besagten Auslauf (1) des Gießgefäßes (1) schließt, und einer unteren Stellung, bei welcher das besagte Verteilerorgan (4) einen maximalen Durchgangsquerschnitt für das besagte Metall öffnet.
  9. Verfahren gemäß Anspruch 8, dadurch gekennzeichnet, daß man das senkrechte Verstellen des besagten Verteilerorgans (4) dadurch hervorruft, daß man die Höhenstellung der elastischen Systeme (11), mit deren Hilfe das besagte Verteilerorgan (4) sich auf einer ortsfesten Basis (10) aufstützt, variieren läßt.
EP91870068A 1990-05-04 1991-04-24 Vorrichtung zum Metallgiessen und Verfahren zum Betrieb derselben Expired - Lifetime EP0455619B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9000474A BE1004121A6 (fr) 1990-05-04 1990-05-04 Dispositif pour la coulee d'un metal et procede d'utilisation de ce dispositif.
BE9000474 1990-05-04

Publications (2)

Publication Number Publication Date
EP0455619A1 EP0455619A1 (de) 1991-11-06
EP0455619B1 true EP0455619B1 (de) 1995-01-11

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Application Number Title Priority Date Filing Date
EP91870068A Expired - Lifetime EP0455619B1 (de) 1990-05-04 1991-04-24 Vorrichtung zum Metallgiessen und Verfahren zum Betrieb derselben

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EP (1) EP0455619B1 (de)
AT (1) ATE116883T1 (de)
BE (1) BE1004121A6 (de)
DE (1) DE69106574D1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1012037A3 (fr) * 1998-06-11 2000-04-04 Centre Rech Metallurgique Busette pour couler en continu de l'acier.
GB2347886A (en) * 1999-03-17 2000-09-20 British Steel Plc Apparatus for removing superheat from liquid metal using a distributor
BE1013745A3 (fr) * 2000-10-10 2002-07-02 Ct De Rech S Metallurg Ass San Procede et dispositif pour couler en continu de l'acier a composition chimique mixte.
BE1017392A3 (fr) * 2006-12-12 2008-08-05 Ct Rech Metallurgiques Asbl Busette a jet creux pour coulee continue d'acier.
CN115138816A (zh) * 2021-03-29 2022-10-04 上海梅山钢铁股份有限公司 多炉次连铸中间包过热度范围的整体控制方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556360A (en) * 1969-01-15 1971-01-19 Nozzle Inc Gas stopper for a ladle
DE2937416A1 (de) * 1979-09-15 1981-04-02 Kalman Dipl.-Ing. 4006 Erkrath Banhidy Vorrichtung zur aufhaengung und vertikalen fuehrung von schwimmern beim vertikalen stranggiessen von nichteisenmetallen
ES2029268T3 (es) * 1986-11-26 1992-08-01 Centre De Recherches Metallurgiques Centrum Voor Research In De Metallurgie Association Sans But Luc Dispositivo de colada de un metal en fase pastosa.
EP0327526B1 (de) * 1988-02-03 1992-06-03 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Vorrichtung zum Kühlen eines Metalls während des Giessens
BE1001438A6 (fr) * 1988-02-11 1989-10-31 Centre Rech Metallurgique Dispositif pour refroidir et agiter un metal pendant la coulee.

Also Published As

Publication number Publication date
EP0455619A1 (de) 1991-11-06
BE1004121A6 (fr) 1992-09-29
ATE116883T1 (de) 1995-01-15
DE69106574D1 (de) 1995-02-23

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