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EP0959997A2 - Procede, dispositif et element de fermeture pour couler des matieres fondues liquides - Google Patents

Procede, dispositif et element de fermeture pour couler des matieres fondues liquides

Info

Publication number
EP0959997A2
EP0959997A2 EP97947699A EP97947699A EP0959997A2 EP 0959997 A2 EP0959997 A2 EP 0959997A2 EP 97947699 A EP97947699 A EP 97947699A EP 97947699 A EP97947699 A EP 97947699A EP 0959997 A2 EP0959997 A2 EP 0959997A2
Authority
EP
European Patent Office
Prior art keywords
spout
inductor
area
closure member
extension
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Withdrawn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
EP97947699A
Other languages
German (de)
English (en)
Inventor
Raimund Brückner
Daniel Grimm
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.)
Didier Werke AG
Original Assignee
Didier Werke AG
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
Application filed by Didier Werke AG filed Critical Didier Werke AG
Publication of EP0959997A2 publication Critical patent/EP0959997A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • H05B6/108—Induction heating apparatus, other than furnaces, for specific applications using a susceptor for heating a fluid
    • 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
    • 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

Definitions

  • the invention relates to a method for pouring liquid melts, in particular steel melts, by pouring a melt vessel, the pouring spout being sealed by the melt at least in the region of its inlet before the pouring. Furthermore, the invention relates to a device and a closure member for performing the method.
  • melting vessels in particular pans, are filled from a converter and from there are moved to a continuous casting platform.
  • the pouring spout of the melt vessel is closed during filling and during the journey from the converter to the continuous casting platform.
  • the closure forms a zone of melt frozen on a closure member, for example a sand filling.
  • the object of the invention is to propose a method by which casting is made possible by means of an inductor.
  • the inductor After the filled melt vessel has traveled to the continuous casting platform, during which journey the inductor is neither electrically connected nor cooled, the inductor is put into operation on the continuous casting platform.
  • the inductor For casting, the inductor is electrically connected and switched on with regard to its cooling.
  • a temperature increase is generated in the area of the inlet of the spout, by means of which the inlet is melted free. It is favorable that this also takes place if the inductor itself is arranged in the area of the outlet of the spout, so that the inductor is not endangered by excess temperature during the trip.
  • the inductor Since the inductor is not or only slightly affected by the temperature of the melt in this area, the use of an air-cooled inductor is favored. More effective water cooling is usually considered too risky.
  • an electrical conductor is inductively coupled to the electromagnetic field of an inductor in the region of the outlet of the spout, and an electromagnetic secondary field is generated in the conductor at least in the region of the inlet of the spout, at least in the region of the inlet of the spout, so that the conductor in the area of the outlet and at least in the area of the inlet of the spout is heated by means of inductively generated electromagnetic fields.
  • the generation of such a secondary field is described in patent application 195 15 230.
  • the conductor can be arranged in the bore of the spout or in the wall thereof. If it is arranged in the hole, then it falls or melts out during casting. If the conductor is arranged in the wall of the outlet, it remains in the wall and can therefore be used several times.
  • the casting process is preferably carried out in such a way that, through the opening of the slide closure, a closure member with approximately the same outer peripheral geometry as the inner peripheral geometry of the spout is used.
  • the closure member in any case closes the inlet of the spout. It can also or additionally be in the form of a sand filling known per se.
  • the closure member has an extension into the area of an inductor, the inductor being arranged in the area of the vessel bottom around the spout.
  • the slide closure is closed and the vessel is filled with molten steel.
  • the vessel is then transferred to the casting position and the inductor is cast onto a cooling device, in particular an air cooling device, and an electrical device
  • the casting is initiated by melting the closure member and the slide closure is opened or the slide closure is opened shortly before casting.
  • a closure member is thus arranged at the inlet, which has an extension, which can be a separate component or can be formed in one piece with the closure member.
  • the slide lock is closed. After the journey to the casting platform, the closure member is melted by means of the inductor, and the slide closure can be opened either before or after the closure member has melted.
  • a device for performing the method is characterized in that a closure member is inserted into the spout in the region of its inlet, over which the melt freezes, that the closure member is assigned an extension which can be coupled inductively and which extends into the region of the outlet and which is assigned by means of a Inductor can be inductively coupled in the outlet area, the extension heating up at least in the area of the inlet, and the closure member being fusible via the extension by heat conduction or by an electromagnetic secondary field.
  • the extension can be constructed in such a way that an electromagnetic secondary field arises in it outside the inductor in the area of the inlet, whereby the extension heats up inductively in the area of the inlet.
  • the extension can be built into the wall of the perforated brick of the spout or be the spout itself or be inserted into its bore.
  • the extension consists of a high-temperature-resistant, electrically conductive ceramic material with slots for guiding the field, the extension remaining in the wall of the perforated brick of the spout during casting and not melting.
  • the extension is part of the spout, and finally the extension can be inserted into the bore of the spout with a corresponding slot. It is then lost when poured on.
  • the inductor is in heat-conducting connection with the bottom of the vessel, preferably with a metallic bottom jacket.
  • a closure member for carrying out the method is characterized in that it has a shield part which is matched to the inner cross section of the spout and which is associated with a tubular extension which extends into the inductor arranged in the region of the outlet.
  • the shield part preferably consists of metal and the tubular extension consists of an inductively connectable ceramic.
  • a perforated brick (2) is installed, in which a pouring sleeve (3) made of refractory ceramic material sits as a pouring spout.
  • the bore of the pouring sleeve (3) forms an inlet (4) at the top and an outlet (5) at the bottom.
  • the pouring sleeve (3) is enclosed by an inductor (6), the hollow cross-section of which a cooling medium, preferably air, can flow through.
  • the inductor (6) sits in the perforated brick (2) as far as possible from the melt (S).
  • the inductor (6) sits - in the area (H) of the outlet (5) - deep in the perforated brick (2) and is therefore comparatively far from the melt (S).
  • the bottom (1) has a metallic bottom jacket (8).
  • a slide frame (9) of a slide closure (10) known per se is arranged on this.
  • a slide plate (11) is slidably mounted in the slide frame (9) by means of a device.
  • An opening (13) of the slide closure (10) adjoining the outlet (5) can be opened or closed with the slide plate (11).
  • the inductor (6) is in heat-conducting connection with the slide frame (9) or with the base casing (8), whereby it projects into the slide frame (9).
  • a sleeve (14) made of ferrite material is provided on the outer circumference of the inductor (6) for electromagnetic shielding of the inductor (6) from the metallic slide frame (9).
  • the sleeve (14) is so thermally conductive that heat can flow from the inductor (6) into the slide frame (9) or the base jacket (8).
  • the slide plate (11) is brought into its open position and a closure member (16) having an extension (15) is inserted into the pouring sleeve (3) through the opening (13) of the slide closure (10). inserted.
  • the closure member (16) has approximately the same outer peripheral geometry (outer diameter) as the inner peripheral geometry (inner diameter) of the pouring sleeve (3).
  • the closure member (16) now sits in the area of the inlet (4) and can protrude slightly above the perforated brick (2) like a cap.
  • the extension (15) in the spout (3) extends from the closure member (16) to the inductor (6) arranged in the region (H) of the outlet ( ⁇ ).
  • the closure member (16) can be made of metal.
  • the extension will in particular consist of an electrically conductive, inductively connectable ceramic. Closure member and extension can in particular be formed in pieces. In the figure, the extension (15) in the bore of the spout (3) is shown.
  • the slide plate (11) After the introduction of the closure member (16) and extension (15) into the spout (3), the slide plate (11) is brought into its closed position. Then the melt is poured into the melting vessel and one
  • the melt zone freezes as a closure on and over the closure member (16).
  • the melt vessel is transported to a continuous casting platform.
  • the inductor (6) is neither electrically connected nor with regard to its cooling.
  • the temperature of the melt acts on the inductor (6) through heat conduction.
  • this sits deep in the perforated brick (2) on the one hand and on the other hand in a heat-conducting connection with the slide frame (9) or is the bottom jacket (8), the temperature at the inductor (6) can not be so high that it is damaged during the trip - melts in the limit.
  • the inductor (6) is connected to an electrical energy source and to a cooling, in particular an air cooling, and then switched on.
  • the extension (15) couples to the electromagnetic field of the inductor (6) and is thereby heated.
  • the extension (15) transfers heat to the closure member (16) by heat conduction, which melts as a result.
  • the melt frozen on the closure member (16) also melts again.
  • the slide plate (11) is brought into the open position so that the casting process takes place.
  • a sleeve-shaped electrical conductor (17) is used as an extension, which consists of metal or a carbon-containing, inductively connectable ceramic.
  • the functioning of the electrical conductor or the extension (15) compared to the pure heat conduction mentioned above is as follows:
  • the electrically conductive, in particular couplable extension (15) extends from the closure member (16) to the inductor (6). It couples inductively to the electromagnetic field of the inductor (6). It is designed in such a way, for example by slots, that an electromagnetic secondary field is created in it in the area of the inlet (4) when the inductor (6) is switched on. The location of the secondary field is designated N in the figure.
  • the extension (15) in the area (H) of the inductor (6) is heated by the main field of the inductor (6).
  • the electromagnetic secondary field (N) heats it up in the area (N) of the inlet (4) in such a way that the closure member (16) melts, as a result of which casting is initiated. in the There is practically no inductive heating between the area (Z) between the main and secondary (F) field of the inductor (6).
  • the electrical conductor (17) or the extension (15) is integrated in the wall of the spout (not shown).
  • the electrical conductor (17) or the extension (15) is captively installed in the perforated brick (2), where it surrounds the spout (3) (not shown).
  • the closure member (16) forms a screen part (18) to which the tubular extension (15) is assigned.
  • the shield part (18) is adapted to the inner cross section of the spout (3).
  • the shield part (18) can be inserted in or over the spout (3). It is made of metal.
  • the shield part (18) can be firmly connected to the tubular extension (15), the tubular extension (15) being inserted into the bore of the spout (3), that is to say the pouring channel.
  • the shield part (18) and the tubular extension (15) can, however, also be separate components.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Furnace Details (AREA)

Abstract

L'invention concerne un procédé pour couler des matières fondues liquides, notamment de l'acier fondu, à travers la busette de coulée (3) d'une cuve de coulée, selon lequel la busette de coulée (3) est fermée, avant le processus de coulée, au moins dans la zone de son entrée (4), par la matière fondue solidifiée. La coulée doit intervenir à l'aide d'un inducteur (6) situé à distance de l'entrée (4). Pour que la coulée s'effectue, une énergie électromagnétique est induite dans la zone (H) de l'évacuation (5) de la busette de coulée, qui entraîne une élévation de la température au moins dans al zone (N) de l'entrée (4).
EP97947699A 1996-10-25 1997-10-22 Procede, dispositif et element de fermeture pour couler des matieres fondues liquides Withdrawn EP0959997A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19644345 1996-10-25
DE19644345A DE19644345A1 (de) 1996-10-25 1996-10-25 Verfahren, Vorrichtung und Verschlußglied zum Angießen von flüssigen Schmelzen
PCT/DE1997/002440 WO1998018584A2 (fr) 1996-10-25 1997-10-22 Procede, dispositif et element de fermeture pour couler des matieres fondues liquides

Publications (1)

Publication Number Publication Date
EP0959997A2 true EP0959997A2 (fr) 1999-12-01

Family

ID=7809943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97947699A Withdrawn EP0959997A2 (fr) 1996-10-25 1997-10-22 Procede, dispositif et element de fermeture pour couler des matieres fondues liquides

Country Status (6)

Country Link
EP (1) EP0959997A2 (fr)
JP (1) JP2001502607A (fr)
KR (1) KR20000048581A (fr)
AU (1) AU5397898A (fr)
DE (2) DE19644345A1 (fr)
WO (1) WO1998018584A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20014593U1 (de) 2000-08-23 2000-12-14 Didier-Werke Ag, 65189 Wiesbaden Ausgusseinrichtung eines Schmelzegefäßes
DE10041418C1 (de) * 2000-08-23 2001-10-25 Didier Werke Ag Ausgusseinrichtung eines Schmelzegefäßes
KR101137810B1 (ko) * 2010-01-29 2012-04-26 원종호 연속 주조용 턴디쉬
KR101242700B1 (ko) * 2010-12-28 2013-03-12 재단법인 포항산업과학연구원 용융 금속을 이용한 진공 밸브
PL3175939T3 (pl) * 2015-12-01 2021-04-06 Refractory Intellectual Property Gmbh & Co. Kg Zamknięcie zasuwowe na wylewie naczynia metalurgicznego
EP3326735B1 (fr) 2016-11-29 2020-07-22 Refractory Intellectual Property GmbH & Co. KG Procédé et dispositif de détection de dimensions dans le bec verseur d'un récipient métallurgique
KR101960935B1 (ko) * 2017-08-24 2019-03-21 주식회사 포스코 래들 및 이를 이용한 용강 처리 방법

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE599522C (de) * 1932-11-02 1934-07-04 Heraeus Vacuumschmelze A G Abstichvorrichtung fuer metallurgische Schmelzoefen
CH350424A (de) * 1956-01-13 1960-11-30 Balzers Hochvakuum Verfahren zum Abgiessen von geschmolzenen Metallen und Einrichtung zur Durchführung dieses Verfahrens
DE1200481B (de) * 1961-01-24 1965-09-09 Bbc Brown Boveri & Cie Vorrichtung zum OEffnen und Schliessen der Ausflussoeffnung eines Behaelters fuer geschmolzene Metalle
DE4136066A1 (de) * 1991-11-01 1993-05-06 Didier-Werke Ag, 6200 Wiesbaden, De Ausgusseinrichtung fuer ein metallurgisches gefaess und verfahren zum oeffnen und schliessen einer ausgusshuelse
DE19515230C2 (de) * 1995-04-28 1997-06-19 Didier Werke Ag Verfahren zum induktiven Aufheizen eines feuerfesten Formteils sowie ein entsprechendes Formteil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9818584A2 *

Also Published As

Publication number Publication date
WO1998018584A2 (fr) 1998-05-07
JP2001502607A (ja) 2001-02-27
AU5397898A (en) 1998-05-22
DE19644345A1 (de) 1998-04-30
DE19781201D2 (de) 1999-10-28
WO1998018584A3 (fr) 1998-07-16
KR20000048581A (ko) 2000-07-25

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