US3887117A - Slide closure plates and method for preventing melt penetration - Google Patents

Slide closure plates and method for preventing melt penetration Download PDF

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Publication number
US3887117A
US3887117A US46257374A US3887117A US 3887117 A US3887117 A US 3887117A US 46257374 A US46257374 A US 46257374A US 3887117 A US3887117 A US 3887117A
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US
United States
Prior art keywords
channel
slide
plate
flow opening
legs
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Expired - Lifetime
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English (en)
Inventor
Hans Reinhard Fehling
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Didier Werke AG
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Didier Werke AG
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Publication date
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Publication of US3887117A publication Critical patent/US3887117A/en
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    • 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
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/42—Features relating to gas injection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
    • Y10T137/4358—Liquid supplied at valve interface
    • Y10T137/4442—External pressure

Definitions

  • the invention relates to a pair of refractory plates, specifically a fixed bottom plate and movable slide plate, each provided with a through-flow opening, for a slide closure on the spout of a liquid-metal containing vessel, in particular a large capacity steel-pouring ladle.
  • the main parts of a slide closure include a pair of refractory plates, namely a fixed bottom plate and a movably-arranged slide plate.
  • the plates slide in a very close contact on each other, to a position with their through-flow openings in alignment for the purpose of opening the closure, or to a position with their openings spaced from each other for the purpose of closing the slide closure.
  • the contact surfaces of the plates are very smooth and plane and are polished to a tolerance of, for example, less than 0.05 mm.
  • the plates are formed of very high-quality refractory mate rial, generally either of a material having a high content of alumina, such as aluminum oxide, or of the highest quality magnesite material.
  • the object of the present invention is to overcome the above-mentioned difficulties, and in particular to prevent the penetration of the metal melt between the plates of the slide closure.
  • This object is achieved in accordance with the present invention by providing on at least the sliding surface of the stationary bottom plate a U-shaped channel extending around the through-flow opening and by providing a connection for inert gas into the channel.
  • the ends of the legs of the channel are separated from each LII other by a distance which exceeds the dimension of the diameter of the through-flow opening of the slide plate which moves between such leg ends. Due to this structural arrangement, the space around the through-flow opening of the bottom plate can be subjected to the action of pressurized gas which will increase the resistance in the pores and intermediate spaces of the refractory plates to the penetration therein of the melt.
  • the through-flow opening of the slide plate can slide between the legs of the U-shaped channel during the opening or closing movement of the slide closure, so that the gas pressure in the channel, which is covered by the sliding surface of the slide plate, remains preserved in every phase of movement of the slide plate. This guarantees an economical comsumption of gas.
  • the channel advantageously surrounds the throughflow opening at a distance corresponding to the opening thereof, and the inert gas connection expediently is connected to the channel in the curved portion thereof.
  • FIG. 1 is a sectional view of a slide closure, including a bottom plate and a slide plate, in the open position, in accordance with the present invention
  • FIG. 2 is a view, taken along line lll] in FIG. 1, of the bottom plate with the slide plate indicated by phantom lines to illustrate the open position of the closure;
  • FIG. 3 is a view similar to that of FIG. 2, but illustrating in phantom lines the closed position of the closure, and also illustrating a channel in the slide plate;
  • FIG. 4 is a view similar to that of FIG. 2, but also schematically illustrating the flow of inert gas.
  • FIG. is a view similar to that of FIG. 2, but also schematically illustrating the penetration of the metal melt.
  • numeral 1 indicates an inlet sleeve which is arranged in a known manner in an apertured brick of the spout of a metal-melt containing vessel, such brick not being illustrated as it forms no part of the present invention.
  • Inlet sleeve I has an opening 2 therethrough, and a stationary bottom plate 3 is fixed to the bottom of sleeve 1 with a through-flow opening 4 thereof coaxially aligned with through-flow opening 2.
  • a sliding surface 5 of bottom plate 3 is in sliding contact with a sliding surface 6 of a movable slide plate 7 which has a through-flow opening 8 therein.
  • An outlet sleeve 9 having a through-flow opening 10 therein is rigidly fixed to the bottom of slide plate 7 with through-flow openings 8 and 10 coaxially aligned.
  • Slide plate 7 and outlet sleeve 9 are mounted in a normal manner in a metal frame which is mounted in displaceable manner on the bottom of the vessel and is not illustrated as it forms no part of the present invention. Plate 7 and sleeve 9 can be shifted back and forth from the open position illustrated in FIGS. 1 and 2 into the closed position illustrated in FIG. 3.
  • the bottom plate 3 is provided in the bottom surface 5 thereof with a U- shaped channel 11 which surrounds through-flow opening 4 in such a manner that the ends of two legs 12 and 13 of the channel extend toward the direction of movement of the slide plate to the closed position thereof.
  • the ends of legs 12 and 13 are separated from each other by a distance which allows the movement of through-flow opening 8 of slide plate 7 between the ends of legs 12 and 13 during the closing and opening operations.
  • a gas connection 14 extends through bottom plate 3 to the curved portion of U-shaped channel ll. Inert gas can be introduced from the exterior through connection 14 into the duct formed by channel 11 and sliding surface 6 of slide plate 7.
  • the inert gas introduced e.g. argon or nitrogen
  • the gas moving outwardly from channel 11 in the direction of the plate periphery is prevented from escaping by a sealing edge zone 16 about the adjoining edges of plates 3 and 7.
  • the gas moving inwardly from channel 11 acts on a zone 17 which is subjected to the danger of penetration by the metal melt.
  • the gas-flow thus prevents the penetration of such melt from through-flow openings 4 and 8 of plates 3 and 7 into the intermediate spaces between the plates and into the pores of the refractory material thereof.
  • Arrows 18 in FIG. 5 show the general direction of the melt penetration during the closing movement of slide plate 7, while arrows 19 indicate the direction of melt penetration during the opening movement of slide plate 7.
  • the gas flow and penetration flow indications of FIG. 4 and FIG. 5 may differ somewhat from case to case.
  • an additional channel 20 is provided in surface 6 of slide plate 7.
  • the two channels or grooves 11 and 20 supplement each other and form a continuous loop in any possible position of slide plate 7, which loops extend around through-flow openings 4 and 8.
  • the slide plate may perform a rotary movement or a partial rotary movement.
  • said supplying means comprises an inert gas connection entering said channel at the curved portion thereof.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
US46257374 1973-04-27 1974-04-19 Slide closure plates and method for preventing melt penetration Expired - Lifetime US3887117A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2011873A GB1472532A (en) 1973-04-27 1973-04-27 Sliding gate nozzles for metallurgical vessels

Publications (1)

Publication Number Publication Date
US3887117A true US3887117A (en) 1975-06-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
US46257374 Expired - Lifetime US3887117A (en) 1973-04-27 1974-04-19 Slide closure plates and method for preventing melt penetration

Country Status (4)

Country Link
US (1) US3887117A (enrdf_load_stackoverflow)
FR (1) FR2227073B1 (enrdf_load_stackoverflow)
GB (1) GB1472532A (enrdf_load_stackoverflow)
SE (1) SE389627B (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4076153A (en) * 1974-10-24 1978-02-28 Metacon Ag Plate structure for a liquid metal container closure
US4480770A (en) * 1980-09-15 1984-11-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and apparatus for the protection of molten metal flows in furnaces
US4576317A (en) * 1983-09-01 1986-03-18 Metacon Aktiengesellschaft Apparatus for preventing air from contacting molten metal during discharge through a sliding closure unit
US4632283A (en) * 1983-11-02 1986-12-30 Toshiba Ceramics Co., Ltd. Molten metal discharging device
US5004131A (en) * 1990-04-16 1991-04-02 Bethlehem Steel Corporation Molten metal slide gate valve
US5390902A (en) * 1991-05-21 1995-02-21 International Industrial Engineering S.A. Belt for sealing a pouring tube
US5670075A (en) * 1996-01-22 1997-09-23 Usx Corporation Sealing gas delivery system for sliding joints
US5676195A (en) * 1995-07-27 1997-10-14 Usx Corporation Method of and apparatus for limiting ingress of gas to incipient continuous cast slabs
US6250520B1 (en) 1996-10-17 2001-06-26 Vesuvius Crucible Company Plant for transferring liquid metal, method of operation, and refractories
WO2001066284A1 (en) * 2000-03-07 2001-09-13 Vesuvius Crucible Company Grooved refractory tube for metallurgical casting, assembly of refractory components and casting installation incorporating such an assembly
US6681964B2 (en) 2000-03-07 2004-01-27 Jean-Luc Renard Grooved refractory pouring tube for metallurgical casting, assembly of refractory components, casting installation and process for repairing the surface of a refractory component
US20130056506A1 (en) * 2010-03-19 2013-03-07 Vesuvius Crucible Company Inner nozzle for transferring molten metal contained in a vessel, system for clamping said nozzle and casting device
US11168795B1 (en) * 2021-01-18 2021-11-09 Chad Heffernan Eclipse valve assembly

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1575601A (en) * 1976-01-22 1980-09-24 Didier Werke Ag Refractory structures for outlet valves for metallurgical vessels
FR2523007A1 (fr) * 1982-03-15 1983-09-16 Air Liquide Procede et installation de protection d'un jet de coulee de metal liquide
BE1001239A3 (fr) * 1987-12-03 1989-08-29 Vesuvius Internat Corp Procede pour rendre etanche a l'air une fermeture coulissante et plaque refractaire d'usure prevue a cet effet.
KR960005885B1 (ko) * 1989-06-01 1996-05-03 시나가와 시로렝가 가부시키가이샤 용융금속배출장치에 사용하는 불활성 가스주입용 플레이트
BE1006006A3 (fr) * 1990-12-19 1994-04-19 Int Ind Eng Sa Piece refractaire pour trou de coulee d'un recipient siderurgique.
US5613545A (en) * 1991-11-12 1997-03-25 Shinagawa Refractories Co. Ltd. Inert gas injecting plate brick or insert nozzle brick for use in a sliding gate valve apparatus of molten metal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918938A (en) * 1954-03-23 1959-12-29 Sylvania Electric Prod Valve construction
US3349789A (en) * 1965-05-24 1967-10-31 Gray Tool Co Lubricated wedge gate valve
US3583692A (en) * 1969-03-05 1971-06-08 United States Steel Corp Emergency apparatus mounted on the bottom of a metal-teeming vessel
US3651998A (en) * 1970-09-23 1972-03-28 Metallurg Exoproducts Corp Nozzle for a pouring ladle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918938A (en) * 1954-03-23 1959-12-29 Sylvania Electric Prod Valve construction
US3349789A (en) * 1965-05-24 1967-10-31 Gray Tool Co Lubricated wedge gate valve
US3583692A (en) * 1969-03-05 1971-06-08 United States Steel Corp Emergency apparatus mounted on the bottom of a metal-teeming vessel
US3651998A (en) * 1970-09-23 1972-03-28 Metallurg Exoproducts Corp Nozzle for a pouring ladle

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4076153A (en) * 1974-10-24 1978-02-28 Metacon Ag Plate structure for a liquid metal container closure
US4480770A (en) * 1980-09-15 1984-11-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and apparatus for the protection of molten metal flows in furnaces
US4576317A (en) * 1983-09-01 1986-03-18 Metacon Aktiengesellschaft Apparatus for preventing air from contacting molten metal during discharge through a sliding closure unit
US4632283A (en) * 1983-11-02 1986-12-30 Toshiba Ceramics Co., Ltd. Molten metal discharging device
US5004131A (en) * 1990-04-16 1991-04-02 Bethlehem Steel Corporation Molten metal slide gate valve
US5390902A (en) * 1991-05-21 1995-02-21 International Industrial Engineering S.A. Belt for sealing a pouring tube
US5676195A (en) * 1995-07-27 1997-10-14 Usx Corporation Method of and apparatus for limiting ingress of gas to incipient continuous cast slabs
US5670075A (en) * 1996-01-22 1997-09-23 Usx Corporation Sealing gas delivery system for sliding joints
US6250520B1 (en) 1996-10-17 2001-06-26 Vesuvius Crucible Company Plant for transferring liquid metal, method of operation, and refractories
US6450376B1 (en) 1996-10-17 2002-09-17 Vesuvius Crucible Company Refractory assemblies
WO2001066284A1 (en) * 2000-03-07 2001-09-13 Vesuvius Crucible Company Grooved refractory tube for metallurgical casting, assembly of refractory components and casting installation incorporating such an assembly
EP1142660A1 (fr) * 2000-03-07 2001-10-10 Vesuvius Crucible Company Pièce réfractaire rainurée pour coulée métallurgique, assemblage de pièces réfractaires et installation de coulée comportant un tel assemblage
US6672490B2 (en) 2000-03-07 2004-01-06 Vesuvius Crucible Company Grooved refractory tube for metallurgical casting, assembly of refractory components and casting installation incorporating such an assembly
US6681964B2 (en) 2000-03-07 2004-01-27 Jean-Luc Renard Grooved refractory pouring tube for metallurgical casting, assembly of refractory components, casting installation and process for repairing the surface of a refractory component
US20130056506A1 (en) * 2010-03-19 2013-03-07 Vesuvius Crucible Company Inner nozzle for transferring molten metal contained in a vessel, system for clamping said nozzle and casting device
US9221098B2 (en) * 2010-03-19 2015-12-29 Vesuvius Crucible Company Inner nozzle for transferring molten metal contained in a vessel, system for clamping said nozzle and casting device
US9808863B2 (en) 2010-03-19 2017-11-07 Vesuvius Crucible Company Tube exchange device for holding and replacing a pouring nozzle, and assembly of a tube exchange device and a pouring nozzle
US11168795B1 (en) * 2021-01-18 2021-11-09 Chad Heffernan Eclipse valve assembly

Also Published As

Publication number Publication date
SE389627B (sv) 1976-11-15
GB1472532A (en) 1977-05-04
DE2417490B2 (de) 1975-07-31
FR2227073B1 (enrdf_load_stackoverflow) 1979-06-15
FR2227073A1 (enrdf_load_stackoverflow) 1974-11-22
DE2417490A1 (de) 1974-11-07

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