EP0327526B1 - Vorrichtung zum Kühlen eines Metalls während des Giessens - Google Patents

Vorrichtung zum Kühlen eines Metalls während des Giessens Download PDF

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Publication number
EP0327526B1
EP0327526B1 EP19890870022 EP89870022A EP0327526B1 EP 0327526 B1 EP0327526 B1 EP 0327526B1 EP 19890870022 EP19890870022 EP 19890870022 EP 89870022 A EP89870022 A EP 89870022A EP 0327526 B1 EP0327526 B1 EP 0327526B1
Authority
EP
European Patent Office
Prior art keywords
vertical channel
chamber
cooling
wall
feed chamber
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
EP19890870022
Other languages
English (en)
French (fr)
Other versions
EP0327526A1 (de
Inventor
Paul Naveau
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
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Filing date
Publication date
Priority claimed from BE8800129A external-priority patent/BE1001405A6/fr
Priority claimed from BE8800130A external-priority patent/BE1001428A6/fr
Application filed by Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Priority to AT89870022T priority Critical patent/ATE76796T1/de
Publication of EP0327526A1 publication Critical patent/EP0327526A1/de
Application granted granted Critical
Publication of EP0327526B1 publication Critical patent/EP0327526B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—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
    • B22D41/50—Pouring-nozzles
    • B22D41/60—Pouring-nozzles with heating or cooling means

Definitions

  • the present invention relates to a device for cooling a metal during casting, with a view to casting this metal with overheating close to 0 ° C or in the pasty phase in a continuous casting mold according to the preamble of claim 1.
  • a device for casting a metal with overheating close to 0 ° C or in the pasty phase is disclosed in particular by patent LU-A-86,688 (EP-A-269180, on which the preamble of claim 1 is based).
  • This device essentially comprises a vertical duct provided externally cooling means and a distributing member ensuring the distribution of the metal cast on the inner wall of this vertical duct.
  • the object of the present invention is to provide a particular device allowing the metal to be cooled under the best conditions during casting.
  • a device for cooling a metal during casting in a vertical pipe with a metal distribution member on the inner wall of the vertical pipe located substantially at the entrance of said vertical pipe, is characterized in that that it comprises a supply chamber disposed around said vertical duct and having a front wall which remotely follows the shape of said vertical duct, and a discharge chamber disposed around said supply chamber and separated from the latter by a intermediate wall, said discharge chamber being delimited at the rear by an external wall, in that said front wall is pierced with a plurality of passages directed towards said vertical duct, in that a portion of said passages open into said feed chamber, in that the other part of said passages are connected to tubes which pass through said feed chamber and said intermediate wall and which open into said discharge chamber, in that said supply chamber comprises means for supplying coolant and in that said discharge chamber comprises means for discharging coolant .
  • said means for supplying coolant comprise a distribution chamber disposed around said vertical duct and communicating with said supply chamber by a series of channels distributed, preferably uniformly, around of said vertical duct.
  • said supply chamber and said distribution chamber have at least one portion of common wall, through which said communication channels are pierced.
  • said passages drilled in the front wall of the supply chamber open into the volume between said front wall and said vertical duct, in a direction perpendicular to the surface of said vertical duct.
  • FIG. 1 Schematically shown in Figure 1, an installation for the casting of steel in the pasty phase, equipped with a steel cooling device according to the invention.
  • a continuous casting mold 1 a casting nozzle 2 equipping for example a casting ladle, a vertical duct 3, arranged upstream of the mold 1 and extended by a tubular element 7; leads him vertical 3 is preceded by a refractory section 8, in which is further disposed a plate 6 supported by three arms and ensuring the distribution of the metal.
  • the vertical duct 3 is provided externally with cooling means comprising an inlet 4 and an outlet 5 for the coolant.
  • the cooling device according to the invention is illustrated on a larger scale in FIG. 2. It comprises a supply chamber 9 arranged around the vertical duct 3 and having a front wall 10 which follows, at a distance "e", the shape of the vertical duct 3.
  • the supply chamber 9 is in turn surrounded by a discharge chamber 11 delimited on the one hand by an intermediate wall 12 which separates it from the supply chamber 9 and on the other hand by an outer wall 13.
  • the distance "e” constitutes the radial width of an annular volume 14 formed between the vertical duct 3 and the front wall 10.
  • This distribution chamber 15 communicates with the supply chamber 9 by channels 16 drilled in a wall portion which is common to these two chambers 9 and 15.
  • the discharge chamber 11 is provided with an outlet 5 for the coolant.
  • the supply 9 and discharge 11 chambers are closed, at their lower part, by individual bottoms 17, 18 which prevent these two chambers from communicating.
  • the front wall 10 is pierced with a plurality of passages which open into the annular volume 14, perpendicular to the surface of the vertical duct 3. A part of these passages, marked 19, open at their other end inside the chamber supply 9, which is thus placed in communication with the annular volume 14.
  • the other passages are connected to tubes 20 which pass through the supply chamber 9 and the intermediate wall 12 in a leaktight manner and which open into the evacuation 11. The room discharge 11 is thus placed directly in communication with the annular volume 14.
  • the vertical duct 3 is generally circular cylindrical; therefore, the chambers 9, 11 and 15 are toroidal, for reasons of symmetry.
  • the passages are preferably uniformly distributed in the front wall 10.
  • the cooling device according to the invention operates as follows.
  • the steel 22 While it travels through the vertical duct 3, the steel 22 must be cooled until it reaches the pasty state by forming a solidified fraction.
  • a cooling liquid which is generally water, is introduced under pressure, through the inlet 4, into the distribution chamber 15 from which it reaches the supply chamber by crossing the channels 16.
  • the coolant enters the annular volume 14 where it circulates along the vertical conduit 3 before being discharged through the tubes 20.
  • the coolant then arrives in the discharge chamber 11 from where it escapes via exit 5.
  • the device of the invention may include means for modifying geometric characteristics such as the width "e" of the annular volume 14 or the diameter of the passages 19, respectively of the tubes 20, as a function of the flow speeds desired in each particular application. .
  • Adjustment means can also be provided to modify the flow rate of coolant as a function of the cooling to be applied in each particular case of application.
  • a 0.8% C steel was poured with a flow rate of 4.8 kg / s, by means of a device illustrated in FIG. 1.
  • the temperature of the steel in the nozzle was from 1510 degrees ° C.
  • the steel was poured onto a distributor plate made of refractory material, then along the inner wall of a vertical cylindrical pipe 3 made of copper, with a length of 350 mm and a diameter of 220 mm.
  • Line 3 was cooled by water introduced at ambient temperature and circulating with a flow rate of 27 m3 / h.
  • the pressure drop in the cooling device was 3.5 kg / cm2.
  • a cooling flux density of 4.2 MW / m2 was reached, with an increase in the water temperature of 7 ° C.
  • the device of the invention therefore makes it possible to ensure more efficient cooling with a smaller quantity of coolant and at a lower pressure than in the prior devices.
  • This device can also be made in one piece, or consist of several elements, independent or not, arranged around the vertical duct, without departing from the scope of the present invention.
  • the vertical duct (3) is circular cylindrical.
  • the invention is however not limited to this type of vertical duct; in fact, it also extends to a duct which would have an outlet section greater than its inlet section, as well as to a duct whose section would not be circular but which would for example be oval.
  • this description particularly refers to the cooling of a vertical duct preceding a continuous casting mold. It goes without saying that it would not be departing from the scope of the invention to use such a device for cooling the ingot mold itself, or any other mold or ingot mold requiring cooling.

Claims (7)

1. Vorrichtung zum Kühlen eines Metalls beim Giessen in einer senkrechten Rinne (3), mit einem auf der Innenwand der senkrechten Rinne im wesentlichen an deren Einlaß angeordneten Metallverteilerglied (6), dadurch gekennzeichnet, daß sie eine um diese senkrechte Rinne (3) herum angeordnete Einlaßkammer (9) mit einer die Form jener senkrechten Rinne (3) im Abstand (e) annehmenden Vorderwand (10) und eine um diese Einlaßkammer (9) herum angeordnete und von dieser durch eine Zwischenwand (12) getrennte Auslaßkammer (11) umfaßt, wobei diese Auslaßkammer an der Rückseite von einer Außenwand (13) begrenzt wird, und daß diese Vorderwand (10) von mehreren auf jene senkrechte Rinne (3) gerichteten Durchgängen durchbrochen ist, daß ein Teil (19) dieser Durchgänge in jene Einlaßkammer (9) mündet, daß der andere Teil dieser Durchgänge mit Röhren (20) verbunden ist, die durch jene Einlaßkammer (9) und jene Zwischenwand (12) hindurchgehen und in jene Auslaßkammer (11) münden, daß jene Einlaßkammer (9) Mittel (4, 15) zur Zufuhr von Kühlflüssigkeit enthält und daß jene Auslaßkammer (11) Mittel (5) zum Abzug von Kühlflüssigkeit enthält.
2. Kühlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß besagte Mittel zur Zufuhr von Kühlflüssigkeit aus einer um jene senkrechte Rinne (3) herum angeordneten und mit besagter Einlaßkammer (9) über um jene senkrechte Rinne (3) herum verteilte Kanäle (16) in Verbindung stehenden Verteilerkammer (15) bestehen.
3. Kühlvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß besagte Einlaßkammer (9) und besagte Verteilerkammer (15) mindestens teilweise eine gemeinsame Wand aufweisen und daß jene Kanäle (16) in diesen Teil der gemeinsamen Wand eingearbeitet sind.
4. Kühlvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die in die Vorderwand (10) jener Einlaßkammer (9) eingebrachten Durchgänge in das zwischen jener Vorderwand (10) und jener senkrechten Rinne (3) eingeschlossene Volumen (14) münden, wobei sie einer zur Oberfläche jener senkrechten Rinne (3) normalen Richtung folgen.
5. Kühlvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sie aus mehreren um besagte senkrechte Rinne (3) herum angeordneten Teilen besteht.
6. Kühlvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Ausgangsquerschnitt der senkrechten Rinne (3) gleich wie oder grösser als deren Eingangsquerschnitt ist.
7. Kühlvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die senkrechte Rinne (3) einen nicht kreisförmigen Querschnitt, wie einen ovalen Querschnitt, aufweist.
EP19890870022 1988-02-03 1989-02-01 Vorrichtung zum Kühlen eines Metalls während des Giessens Expired - Lifetime EP0327526B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89870022T ATE76796T1 (de) 1988-02-03 1989-02-01 Vorrichtung zum kuehlen eines metalls waehrend des giessens.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
BE8800129A BE1001405A6 (fr) 1988-02-03 1988-02-03 Dispositif de coulee d'un metal dans une lingotiere de coulee continue.
BE8800130 1988-02-03
BE8800130A BE1001428A6 (fr) 1988-02-03 1988-02-03 Dispositif de refroidissement d'un metal pendant la coulee.
BE8800129 1988-02-03

Publications (2)

Publication Number Publication Date
EP0327526A1 EP0327526A1 (de) 1989-08-09
EP0327526B1 true EP0327526B1 (de) 1992-06-03

Family

ID=25662343

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Application Number Title Priority Date Filing Date
EP19890870022 Expired - Lifetime EP0327526B1 (de) 1988-02-03 1989-02-01 Vorrichtung zum Kühlen eines Metalls während des Giessens

Country Status (2)

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EP (1) EP0327526B1 (de)
DE (1) DE68901655T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1004121A6 (fr) * 1990-05-04 1992-09-29 Lahaut Hugues Dispositif pour la coulee d'un metal et procede d'utilisation de ce dispositif.
FR2663573A1 (fr) * 1990-06-20 1991-12-27 Siderurgie Fse Inst Rech Busette de coulee d'un metal liquide dans une lingotiere de coulee continue.
FR2705260B1 (fr) * 1993-05-14 1995-08-18 Lorraine Laminage Vérin pour busette à tiroir de poche pour métal fondu.
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.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517931A (en) * 1947-05-15 1950-08-08 Rossi Irving Apparatus for the continuous casting of metal
FR1443745A (fr) * 1964-09-22 1966-06-24 Hoerder Huettenunion Ag Procédé et machine de coulée continue des métaux, notamment de l'acier
DE3664487D1 (en) * 1985-04-19 1989-08-24 Nat Res Dev Metal forming
ATE71004T1 (de) * 1986-11-26 1992-01-15 Centre Rech Metallurgique Vorrichtung zum giessen eines pastenartigen metalles.

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Publication number Publication date
DE68901655D1 (de) 1992-07-09
EP0327526A1 (de) 1989-08-09
DE68901655T2 (de) 1993-04-29

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