EP4142965B1 - Fermetures de type à tiroir pourvues d'un corps d'étanchéité interne et procédé de montage - Google Patents

Fermetures de type à tiroir pourvues d'un corps d'étanchéité interne et procédé de montage Download PDF

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Publication number
EP4142965B1
EP4142965B1 EP21722171.2A EP21722171A EP4142965B1 EP 4142965 B1 EP4142965 B1 EP 4142965B1 EP 21722171 A EP21722171 A EP 21722171A EP 4142965 B1 EP4142965 B1 EP 4142965B1
Authority
EP
European Patent Office
Prior art keywords
sealing body
slide
closure
slide frame
housing
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.)
Active
Application number
EP21722171.2A
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German (de)
English (en)
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EP4142965A1 (fr
EP4142965C0 (fr
Inventor
Thomas Schmitz
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.)
Knoellinger Flo Tec GmbH
Original Assignee
Knoellinger Flo Tec GmbH
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Publication date
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Publication of EP4142965A1 publication Critical patent/EP4142965A1/fr
Application granted granted Critical
Publication of EP4142965B1 publication Critical patent/EP4142965B1/fr
Publication of EP4142965C0 publication Critical patent/EP4142965C0/fr
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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
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/055—Cooling the moulds
    • 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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • B22D11/141—Plants for continuous casting for vertical casting
    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/20—Controlling or regulating processes or operations for removing cast stock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002—Castings of light metals
    • B22D21/005—Castings of light metals with high melting point, e.g. Be 1280 degrees C, Ti 1725 degrees C
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • B22D27/045—Directionally solidified castings
    • 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
    • B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
    • B22D41/01—Heating means
    • B22D41/015—Heating means with external heating, i.e. the heat source not being a part of the ladle
    • 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
    • C22C1/02—Making non-ferrous alloys by melting

Definitions

  • the invention relates to a slide closure for a metallurgical container, in particular a casting ladle, and to a method for assembling a slide closure for a metallurgical container.
  • Slide valves for metallurgical containers are known per se. Such slide valves are typically attached to a metallurgical container, e.g. below a pouring ladle, and are used for the controlled pouring of liquid metals from a pouring outlet, whereby a pouring channel can be opened or closed by refractory plates that can be moved relative to one another. Such slide valves are also referred to as pouring ladle slide valves.
  • a slide plate is arranged within a slide frame that can be moved in translation relative to the housing (closure housing) of the slide valve by means of a hydraulic cylinder.
  • Slide valves can be designed as two-plate slide valves with a slide plate that can be moved relative to a stationary head plate, or as three-plate slide valves with a slide plate that can be moved relative to a stationary upper head plate and a stationary lower pouring plate.
  • a protective gas atmosphere is often created in slide valves to prevent the melt discharged from the metallurgical vessel from Metal or a metal alloy reacts with the oxygen in the environment.
  • the protective gas or inert gas atmosphere can in particular prevent ambient air from entering or being sucked into the pouring channel during pouring via the slide valve closure, e.g. between the head and slide plate.
  • the addition of oxygen to the molten metal can lead to uncontrolled metallurgical reactions and impair the quality of the end product, which is in particular a steel product.
  • the closure housing must be sealed from the environment.
  • a slide valve with a protective gas or inert gas atmosphere is made, for example, of EN 40 07 993 A1 known.
  • a gas-tight box is built around the slide frame and is closed by a cover plate.
  • An inert gas line leads into the box to create an inert gas environment inside the box.
  • a circumferential seal is provided in the edge of the box side walls.
  • JP-S61-3653-A shows a slide closure in which a bellows is used to seal the central opening of a cover body of the closure housing on the pouring side.
  • EN 20 2011 111055 U1 shows a valve housing with a box-like frame with a bottom wall, on the outside of which a seal is provided around the spout.
  • connecting the shadow tube to the pouring sleeve can be problematic due to a sealing plate that has sunk below the closure housing.
  • uncontrolled gas escape can lead to a deterioration in the shielding by protective gas inside the closure housing, increased reoxidation and thus to a deterioration in the quality of the steel.
  • the slide valves with protective gas atmosphere known from the state of the art are susceptible to leaks and operational malfunctions due to material failure of the springs.
  • the known arrangements for gas sealing i.e. sealing against (unwanted) gas leakage, increase the design effort and the construction volume of the slide valve.
  • the present invention therefore has the object of providing a slide closure which has increased operational reliability, in particular with regard to possible escape of protective gas.
  • the slide closure should also be as simple as possible in design and have as small a construction volume as possible.
  • the invention is based on the idea that springs for applying a contact pressure of the sealing body are not absolutely necessary for an effective gas seal if the sealing body is arranged on an inner side of the closure housing. As a result, the risk of leakage due to material failure of the springs is also eliminated.
  • a sealing body arranged on the inner side of the closure housing which could also be referred to as an internal sealing body, is pressed against the inner side of the closure housing due to gravity or the weight of the sealing body in a typical arrangement of the slide closure. Adequate gas sealing can be achieved simply due to the resulting contact pressure from an internal sealing body.
  • the (additional) use of at least one compression spring, in particular to increase the sealing effect, is provided.
  • An additional sealing body on an outer side of the closure housing is preferably not provided, but is not excluded by the invention.
  • the sealing body is arranged on an inner side of the closure housing, which is opposite the metallurgical container.
  • the closure housing can comprise a (box-shaped) slide housing and a housing cover (mounting plate or cover plate), whereby the housing cover or the slide housing can be fastened to the metallurgical container.
  • the sealing body for gas sealing of the outlet opening can be arranged on an inner side of the slide housing or on an inner side of the Housing cover.
  • the sealing body is arranged on an inner side of the closure housing between the slide frame and the inner side of the closure housing.
  • gas seal does not mean a hermetic sealing of the entire closure housing against gas leakage at any point. Rather, a gas seal of the outlet opening is intended to prevent uncontrolled gas leakage from the outlet opening.
  • the area of the passage opening of the sealing body can define or limit an area (partial area) of the outlet opening through which a (controlled or desired) gas leakage is possible, in particular a guided protective gas flow through a gap (circumferential gas guide gap) between the sealing body or the passage opening of the sealing body and an outside of the pouring sleeve.
  • gas seal refers in particular to a seal against gas leakage between the inside of the closure housing and a side of the sealing body facing this inside (underside).
  • the pouring sleeve is accommodated in particular in the slide frame, whereby the pouring sleeve is movable relative to the closure housing.
  • the slide closure is preferably designed as a two-plate slide.
  • the pouring sleeve can also be provided in a stationary manner (relative to the closure housing), whereby the slide closure could preferably be designed as a three-plate slide.
  • the closure housing has in particular at least one gas supply for a protective gas (inert gas).
  • the gas supply can be provided on the mounting plate and/or on the slide housing.
  • the sealing body is in particular made of metal, preferably steel. The sealing body can be constructed in one or more parts.
  • a slide closure according to the invention has the advantage that the springs required in the prior art to create the sealing effect can be omitted. This increases operational reliability, in particular against uncontrolled gas leakage due to spring failure and a resulting displacement of the sealing body.
  • the structural design of the slide closure for gas sealing can be simplified. The construction volume of the slide valve can be reduced by an internal sealing body.
  • the sealing body in particular an edge region of the sealing body, is supported against an inner surface of the closure housing.
  • the sealing body is supported at least partially in an edge region of the outlet opening.
  • An edge region of the outlet opening can be understood as an inner region of the closure housing that surrounds the outlet opening (at least partially).
  • the sealing body does not have to lie directly, in particular not flatly, on the inside of the closure housing.
  • a seal that is in direct contact with the inside of the closure housing can be arranged between the sealing body and the inside.
  • the sealing body is arranged displaceably relative to the outlet opening, wherein the sealing body preferably comprises a sealing plate.
  • the outlet opening is preferably designed as a recess in the closure housing, in particular a (lower) wall of the closure housing.
  • the outlet opening can be formed in a wall of the closure housing opposite the metallurgical container, in particular in the bottom of a box-shaped closure housing.
  • the outlet opening preferably extends in the direction of displacement of the slide frame in order to enable a longitudinal displacement of the pouring sleeve extending into or through the outlet opening when the slide frame moves.
  • a longitudinal dimension of the sealing body (the sealing plate) is at least as large as a longitudinal dimension of the outlet opening in the direction of displacement plus the maximum displacement path of the slide frame.
  • an inner surface of the closure housing forms a sliding surface for the sealing body, wherein areas of the sliding surface in particular have a lower surface roughness than areas outside the Sliding surface.
  • the inner surface can be machined in some areas, in particular by machining, for example ground.
  • the inner surface of the closure housing is (in the area of the sliding surface) particularly flat and allows a relative displacement of the sealing body to the inner surface. The sealing effect can be improved by a smooth sliding surface.
  • the sealing body has a seal, preferably a flat seal, running around the passage opening on a sealing surface that faces an inner surface of the closure housing.
  • a groove is preferably formed in the sealing surface of the sealing body, which runs around the passage opening and into which a seal, preferably a flat seal, is inserted.
  • the seal preferably has an (approximately) rectangular cross-section.
  • the sealing body has a seal, preferably a flat seal, which comprises a graphite mesh, which is preferably reinforced with steel mesh.
  • a seal preferably a flat seal, which comprises a graphite mesh, which is preferably reinforced with steel mesh.
  • Such a sealing material is stable even at high temperatures and is hard-wearing and abrasion-resistant.
  • the sealing body is connected to the slide frame so that it can move in a pouring direction perpendicular to the displacement direction.
  • the pouring direction runs in particular in the direction of gravity.
  • a movement of the slide frame can be coupled to the sealing body, in particular transmitted to the sealing body, while a (small) relative displacement of the sealing body to the slide frame is possible.
  • the sealing body (or a seal accommodated in the sealing body) can rest against the inside of the closure housing regardless of the position of the slide frame in the pouring direction, in particular in any position of the slide frame in the displacement direction. The sealing effect is thereby improved.
  • an interchangeable ring accommodated in the slide frame for holding the pouring sleeve extends through the passage opening of the sealing body, wherein preferably an inner circumferential surface of the passage opening of the sealing body rests against an outer circumferential surface of the interchangeable ring.
  • the pouring sleeve can be inserted into the interchangeable ring.
  • the interchangeable ring is not firmly connected to the sealing body in the axial direction (longitudinal axis of the interchangeable ring or the pouring sleeve).
  • the sealing body can preferably slide in relation to the interchangeable ring in the pouring direction.
  • the sealing body is preferably positively coupled or connected to the interchangeable ring. This allows a sliding movement of the slide frame to be transferred to the sealing body, while the movement of the sealing body in the pouring direction is decoupled from it.
  • a protective plate is attached to the sealing body, which extends along an outer side of the closure housing.
  • the protective plate preferably extends (essentially) parallel to the outer surface (underside) of the closure housing.
  • the (outer) protective plate is preferably connected to the (inner) sealing body via a protective plate connecting piece extending through the outlet opening of the closure housing.
  • the protective plate is preferably screwed (directly) to the sealing body, with the protective plate connecting piece arranged in between.
  • the protective plate could also be attached (directly), in particular screwed, to the protective plate connecting piece.
  • the protective plate connecting piece extends in particular from an inner side of the closure housing to an outer side of the closure housing.
  • the protective plate connecting piece can be designed as a (cylindrical or hollow cylindrical) sleeve (spacer sleeve), which is preferably connected, preferably welded, to the sealing body, in particular to an inner circumferential surface of the passage opening of the sealing body.
  • a circumferential (annular) flat seal is preferably provided between the protective plate connecting piece and the protective plate.
  • an interchangeable ring accommodated in the slide frame for holding the pouring sleeve has at least one radial gas feed-through channel, which preferably opens into a gas guide gap formed between the sealing body and the slide frame.
  • the gas guide gap can be formed by a gap between the sealing body and the slide frame, in particular between an upper side of the sealing body and an underside of the slide frame.
  • several gas discharge channels are provided (evenly) distributed over the circumference of the interchangeable ring, for example two, three, four, six, eight or more Gas discharge channels.
  • the gas discharge channels are preferably designed as radial through holes in the interchangeable ring.
  • a gas discharge channel connects the gas guide gap between the sealing body and the slide frame with a circumferential gas guide gap on the outside of the pouring sleeve.
  • a circumferential gas guide gap serves to guide a gas flow (protective gas flow) out of the closure housing.
  • Radial gas feed-through channels can ensure a more uniform flow on the pouring sleeve.
  • the displacement of the slide frame can lead to (minor) changes in the position of the slide plate, the interchangeable ring and the pouring sleeve relative to one another (in the direction of displacement).
  • the flow paths for the protective gas, in particular the (intended) outlet gap for the protective gas along an outer circumference of the pouring sleeve can thus become uneven.
  • Gas feedthrough channels enable a more even distribution or flow of the protective gas over the circumference of the pouring sleeve and thus a reduced risk of ambient air penetrating the outflowing metallic melt.
  • the sealing body is supported on the slide frame by at least one compression spring, preferably a helical compression spring.
  • Compression springs can be arranged between the sealing body and the slide frame, in particular between an upper side of the sealing body and an underside of the slide frame.
  • Several springs, preferably three, four, six or eight springs, can be arranged (evenly) distributed around the pouring sleeve.
  • Compression springs can be used to achieve a resilient support of the sealing body against the slide frame. This can increase the pressure on the inside of the closure housing that is already generated by the weight of the sealing body.
  • a uniform contact of the sealing body on the inside (inner surface or sliding surface) of the closure housing is promoted, in particular regardless of the position of the slide frame in the direction of displacement. The sealing effect is thereby further improved. Even in the event of material failure of the compression springs, the sealing effect is maintained (at least partially) by the internal sealing body. The operational safety and reliability of the slide closure is thereby increased.
  • the sealing body has a receiving opening for a compression spring on a side facing the slide frame and/or the slide frame has a receiving opening for a compression spring on a side facing the sealing body.
  • the receiving openings for the springs are provided in particular on an upper side of the sealing body or an underside of the slide frame.
  • the receiving openings are preferably designed as bores into which the compression springs (compression coil springs) are or will be inserted. In the installed state (operating state), the compression springs are compressed. So that they exert a contact force of the sealing body on the inside (inner surface or sliding surface) of the closure housing.
  • the sealing body is supported on the slide frame via a pressure spring arrangement, which can be pre-assembled in particular.
  • the pressure spring arrangement which can be pre-assembled in particular, preferably comprises a spring holder for the captive holding of at least one compression spring.
  • the pressure spring arrangement can be attached to the slide frame or to the sealing body.
  • the compression spring is captive connected to the slide frame or the sealing body via a spring holder.
  • the compression spring can be held loosely by the spring holder or can be braced against the slide frame or the sealing body.
  • pre-assembled refers in particular to a point in time before the slide frame is assembled with the sealing body in the closure housing.
  • a pre-assembled or pre-assemblable pressure spring arrangement facilitates the assembly of a spring (pressure springs) to support the sealing body on the slide frame.
  • the pressure spring arrangement in particular exerts an additional pressure force on the sealing body to improve the seal.
  • the pressure spring arrangement which can in particular be pre-assembled, has a pressure tappet which is attached to the slide frame or the sealing body in a spring-like manner, preferably via a compression spring.
  • the compression spring is preferably supported with one spring end against the slide frame or the sealing body and with another spring end against a spring contact surface of the pressure tappet.
  • the spring holder holds the pressure tappet in the unassembled state of the sealing body.
  • the pressure tappet can be clamped to the slide frame or to the sealing body via the compression spring, whereby the compression spring can be pre-tensioned in the pre-assembled state of the pressure spring arrangement.
  • the contact pressure on the sealing body can be set or readjusted by the length of the compression spring or its pre-tension in the contact spring arrangement.
  • the contact pressure tappet can be accommodated (when assembled) in a tappet recess in the slide frame or the sealing body.
  • the slide frame and the sealing body are positively connected to one another via at least one connecting element, preferably via at least one driving pin, in particular in the direction of displacement and/or in a direction of rotation about the pouring direction.
  • a rotation of the sealing body relative to the pouring sleeve or the interchangeable ring can be prevented via such a connecting element, which is arranged in particular eccentrically to the pouring sleeve or the interchangeable ring.
  • lateral longitudinal guides (in the direction of displacement V) of the compressor body in the closure housing can be dispensed with or they can be designed with more play.
  • the (internal) sealing body preferably the (internal) sealing plate, can be made narrower.
  • a positive coupling or connection of the sealing body with the interchangeable ring or the pouring sleeve in the radial direction can be omitted or designed with a larger play.
  • the displacement movement can be transferred (fully or partially) to the sealing body via the connecting elements (driving pins).
  • the connecting elements can be arranged distributed around the interchangeable ring. For a complete transfer of the displacement force of the slide frame to the sealing body, several connecting elements are preferably provided.
  • a single connecting element can be sufficient to prevent rotation.
  • the displacement force (depending on the existing play between the components of the slide closure) can still be transferred via the interchangeable ring or (fully or partially) via the at least one connecting element.
  • a single connecting element is preferably provided, while with larger embodiments several connecting elements are provided.
  • the sealing body has a recess on a side facing the slide frame for a (positive) engagement with a connecting element (driving pin), which is preferably attached to the slide frame.
  • the slide frame can also have a recess on a side facing the sealing body for a (positive) engagement with a connecting element (driving pin), which is attached to the sealing body.
  • an internal sealing body is created, which is arranged on an inner side of the closure housing.
  • the insertion of a sealing body and the insertion of the slidably mounted slide frame can be carried out together, ie in a single step, in particular as a pre-assembled assembly that includes the sealing body and the slide frame.
  • the method has similar Advantages such as those already described in connection with the slide closure according to the invention. If the described assembly method were to completely or partially dispense with springs, which are required in the prior art to create the sealing effect, the gas seal would then be ensured (at least partially) by the weight of the sealing body (and the protective plate).
  • the operational reliability can be increased by a slide closure assembled according to the method, in particular against uncontrolled gas leakage due to spring failure and a resulting displacement or misalignment of the sealing body.
  • the assembly method can reduce the construction volume of the slide closure.
  • the assembly method or parts of the assembly method can be carried out in a vertical or horizontal position of the closure housing, in particular in a position of the closure housing hanging on a mounting stand.
  • the assembly method can comprise further steps, such as inserting a pouring sleeve and/or a slide plate into the slide frame and/or fastening a head plate to a mounting plate of the closure housing.
  • the closure housing is fastened to the metallurgical container by means of the mounting plate.
  • a (box-shaped) slide housing can also be fastened to the metallurgical container, wherein the sealing body is arranged on an inner side of a (pivotable) housing cover, in particular a cover plate.
  • Closing the closure housing can comprise locking a slide housing to a mounting plate (or a housing cover), wherein the mounting plate (or the slide housing) serves to fasten the slide closure to a metallurgical container.
  • the closure housing comprises in particular the mounting plate and the slide housing, in which the slide frame is mounted in a displaceable manner.
  • the method comprises arranging at least one compression spring on a side of the sealing body facing away from the outlet opening after the sealing body has been inserted and before the slidingly mounted slide frame has been inserted.
  • the arrangement of the compression springs can be provided as a step of pre-assembling an assembly which comprises the sealing body, the slide frame and the compression springs as a pre-assembled assembly which is inserted into the opened closure housing.
  • the compression springs are particularly in the receiving openings.
  • at least one compression spring is provided or installed. This further increases the sealing effect. Even if the springs fail, at least a partial sealing effect is maintained.
  • the method comprises the pre-assembly of a pressure spring arrangement on the slide frame or on the sealing body, wherein the pressure spring arrangement preferably comprises a spring holder for the captive holding of at least one compression spring.
  • the pressure spring arrangement serves in particular (in the assembled state of the slide closure) to support the sealing body (via the pressure spring arrangement) on the slide frame.
  • the slidably mounted slide frame is inserted into the opened closure housing together with the pressure spring arrangement pre-assembled thereon, or the sealing body is inserted into the opened closure housing together with the pressure spring arrangement pre-assembled thereon.
  • the stated object is also achieved in particular by the use of a sealing body for gas sealing of a closure housing of a slide closure according to the invention for a metallurgical container on an inner side of the closure housing, in particular on an inner side of the closure housing facing away from the metallurgical container.
  • the sealing body used can comprise a sealing plate or be designed as a sealing plate.
  • the sealing body can have a circumferential seal, preferably a seal (flat seal) running along an edge of the sealing body.
  • the Figures 1a to 3 show an embodiment of a slide closure 100 according to the invention in different positions and sectional views.
  • the slide lock 100 is shown in the open position and in the Figures 1b and 2 B in a closed position.
  • the Figures 4a to 4d show a further embodiment of a slide closure 100 according to the invention.
  • the figures in connection with the Figures 1 to 3 The structural and functional features of the slide closure 100, the method of assembly and the Use of a sealing body 20 also apply to the Figures 4a to 4d embodiment shown, unless otherwise stated.
  • the slide valve closure 100 can be connected to a metallurgical container (not shown) and can be firmly mounted on the container, typically on its underside, e.g. as a pouring ladle valve. Such a container is suitable for keeping a metallic melt, i.e. a molten metal alloy such as liquid steel, ready for a casting process.
  • the slide valve closure 100 serves to close or open an opening of the metallurgical container in order to allow liquid metal or a metal alloy to flow out of the container in a controlled manner.
  • the slide valve closure 100 can be locked for the operating state via a locking mechanism 4.
  • bottom and top refer to an orientation of the assembled slide valve 100 in the state of use, in which the slide valve 100 extends in a horizontal direction, so that the force of gravity G acts in a vertical direction away from the metallurgical container from top to bottom.
  • the inlet opening 13 is arranged at the top and the outlet opening 19 for the metallic melt is arranged at the bottom.
  • the orientation of the slide valve 100 in the state of use is not limited to a horizontal orientation, however.
  • the pouring direction A runs in the direction of the force of gravity G.
  • the slide valve closure 100 has a closure housing 1, which here comprises two housing parts in the form of a mounting plate 10 and the slide valve housing 11 that can be pivoted relative to one another about a pivot axis S.
  • the mounting plate 10 serves to firmly connect the slide valve closure 100 to the container and, when assembled, forms a cover of the closure housing 1.
  • the box-shaped slide valve housing 11 could also be attached to the metallurgical container, with the inlet opening 13 being provided in the slide valve housing 11 and the outlet opening 19 in a pivotable cover plate.
  • the slide valve 100 designed as a two-plate slide valve, has a head plate 5 which is accommodated in or attached to the mounting plate 10.
  • the mounting plate 10 has a wear ring 12 seated in the inlet opening 13 and the head plate 5 has a passage opening 50, through which liquid metal can flow from a drain opening of the container through the inlet opening 13.
  • a slide frame 2 is arranged in a sliding direction V (see double arrows in the Figures 1a, 1b , 2a and 2 B ) is arranged so as to be displaceable relative to the closure housing 1 or slide housing 11.
  • the slide frame 2 is displaced essentially parallel to the mounting plate 10.
  • the slide frame 2 can be pushed back and forth in the displacement direction V by means of a suspendable hydraulic cylinder (not shown) via the cylinder bracket 3 with the push rod 30.
  • the spacer element 31 limits the maximum displacement path.
  • the slide frame 2 accommodates a slide plate 6 with a flow opening 60 and a pouring sleeve 7 with a flow channel 70.
  • the pouring sleeve 7 is accommodated in the slide frame 2 via the interchangeable ring 24.
  • the interchangeable ring 24 is fastened to the slide frame via the screw connection 23.
  • the pouring sleeve 7 extends with its longitudinal axis in a pouring direction A from the metallurgical container through the outlet opening 19.
  • the slide plate 6 is accommodated in the slide frame 2 and detachably fastened.
  • the slide plate 6 is additionally held in the slide frame 2 via magnets 28, in particular to simplify assembly.
  • the slide plate 6 closes the flow channel 70.
  • the slide plate 6 is displaced relative to the head plate 5.
  • liquid metal can flow out of the container, through the head plate 5, the slide plate 6 and the pouring sleeve 7 through the outlet opening 19, as shown in the Figures 1a , 2a and 3
  • the pouring sleeve 7, the slide plate 6 and the head plate 5 are made of refractory material, while the closure housing 1 is made of steel.
  • the slide frame 2 is supported in the slide housing 11 via the slide strips 27, the pressure strips 26 and the thermodynamic spring elements 14a, 14b, which are provided on both sides of the slide frame 2.
  • the spring elements 14a, 14b generate a pressure force of the slide plate 6 on the head plate 5 in order to prevent the metallic melt from penetrating between the slide plate 6 and the hotplate 5.
  • the spring elements 14a, 14b are to be distinguished from the springs required in the prior art for pressing an external sealing plate to seal the outlet opening 19 and from the compression springs 25 provided in the present invention for pressing an internal sealing body 20 to seal the outlet opening 19.
  • the pressure force of the thermodynamic spring elements 14a, 14b is significantly greater than that of the compression springs 25 described below.
  • the closure housing 1 has a gas supply 15, which opens into a gas supply channel 80 in the interior of the closure housing 1, in order to introduce a protective gas (inert gas), preferably argon, into the closed closure housing 1.
  • a protective gas inert gas
  • the closure housing 1 is sealed against an uncontrolled escape of protective gas into the environment via the mounting plate seal 91, the sliding cylinder seal 92 and the sealing body 20 with the seal 90.
  • the sealing body 20 is arranged on an inner side 17 of the closure housing 1, which is opposite the mounting plate 10.
  • the sealing body 20 has a, for example circular, passage opening 40 for the pouring sleeve 7.
  • the pouring sleeve 7 protrudes from the closure housing 1 through the passage opening 40 and the outlet opening 19.
  • the change ring 24 is received in the passage opening 40 in such a form-fitting manner, or extends into the passage opening 40, that a displacement of the slide frame 2 in the displacement direction V is transferred to the sealing body 20.
  • the change ring 24 In the pouring direction A, however, the change ring 24 is not firmly connected to the sealing body 20, but can, if necessary, move (slightly) relative to it.
  • the sealing body 20 is displaceable relative to the outlet opening 19 in the displacement direction V, wherein the sealing body 20 is supported indirectly, or alternatively directly, on the inner surface 17 via the seal 90.
  • the seal 90 is inserted into a circumferential groove 42 which is provided in a sealing surface 41 formed on the underside of the sealing body 20, preferably along its edge.
  • the sealing body 20 is supported in its edge area against the inner surface 17 of the closure housing 1 or the slide housing 11 via the seal 90.
  • the seal 90 slides along an inner surface 16 of the closure housing 1 or the slide housing 11 when the slide frame 2 is displaced.
  • the inner surface 16 can have a lower surface roughness than other inner surfaces of the closure housing 1, in particular it can be machined, to improve the sealing effect.
  • the seal 90 runs around the passage opening 40 and is preferably designed as a flat seal made of a graphite mesh that is reinforced with steel mesh. Due to its own weight or the force of gravity G, the sealing body 20 presses itself from the inside against the inside 17 of the closure housing 1 and in this way creates a sealing effect against uncontrolled gas escape through the outlet opening 19.
  • the sealing body 20 comprises a sealing plate which is arranged on the inside of the closure housing 1, i.e. on the inside.
  • the sealing plate extends along the inner surface 16.
  • a protective plate 21 is fastened to the sealing body 20 via the screw connection 22, with a protective plate connection piece 29 designed as a cylindrical sleeve being fastened to the sealing body 20, preferably welded.
  • the hollow cylindrical protective plate connection piece 29 extends through the outlet opening 19 of the closure housing 1.
  • the protective plate 21 extends on an outer side 18 of the closure housing 21 and is therefore on the outside.
  • the protective plate seal 93 designed as an annular flat seal seals the connection between the protective plate 21 and the protective plate connection piece 29 against gas leakage.
  • the protective plate 21 has a circular passage opening for the pouring sleeve 7, through which the latter protrudes.
  • the sealing plate of the sealing body 20 as well as other components, such as the protective plate connecting piece 29 and the protective plate 21, are made of steel.
  • Compression springs 25 here designed as helical compression springs, are arranged between an upper side of the sealing body 20 and an underside of the slide frame 2.
  • the compression springs 25 are accommodated or inserted on both sides in receiving openings 43 designed as bores.
  • four compression springs 25 are provided around the interchangeable ring 24 or the pouring sleeve 7.
  • the compression springs 25 can increase the sealing effect of the internal sealing body 20 by pressing the sealing body 20 against the inner side 17 of the closure housing 1 in addition to its own weight. Due to the displaceability of the interchangeable ring 24 relative to the sealing body 20 perpendicular to the displacement direction V (ie in the pouring direction A), a possible variation in the thickness of the slide plate 6 and/or the head plate 5 can be compensated. The movement that the slide frame 2 carries out when the compression springs 25 are released is also compensated.
  • the compression springs 25 can achieve the most uniform possible pressing of the sealing body 20 against the inner surface 16, thereby increasing the sealing effect.
  • a gas guide gap which extends perpendicular to the pouring direction A.
  • the compression springs 25 extend transversely to this gas guide gap.
  • gas feedthrough channels 81 are provided as bores distributed over the circumference in order to ensure that the protective gas flows around the pouring sleeve 7 as evenly as possible.
  • a gas feedthrough channel 81 opens into the gas guide gap between the top of the sealing body 20 and the bottom of the slide frame 2 and can have a diameter of approximately 10 mm.
  • the gas feedthrough channels 81 facilitate an even distribution of the protective gas in order to prevent contact between the poured metallic melt and the ambient air.
  • the suction of ambient oxygen can be prevented by an even and comprehensive flow of protective gas, preferably argon, around the pouring sleeve.
  • the Figures 4a to 4d The embodiment of the slide closure 100 shown differs from that shown in the Figures 1a to 3 illustrated embodiment in the assembly, in particular the compression springs 25, and by the presence of additional connecting elements 44, whereby these two technical aspects can also be used independently in further embodiments. from each other.
  • the protective plate seal 93 is designed here as a sealing cord.
  • pre-assembled pressure spring arrangements 32 are provided, via which the sealing body 20 is supported on the slide frame 2.
  • the pressure spring arrangement 32 can be pre-assembled on the slide frame 2 before the final assembly of the slide closure 100, in order to then be assembled together with the slide frame 2 in the closure housing 1 with the sealing body 20.
  • the compression springs 25 are held captive by a spring holder 33.
  • the spring holder 33 has a pressure tappet 35 which is attached to the slide frame 2 in a spring-loaded manner via the compression spring 25, i.e. displaceable in the longitudinal direction of the compression spring 25.
  • the compression spring 25 is arranged between the pressure tappet 35 and the slide frame 2 and can be pre-tensioned in the pre-assembled state via the screw connection 36.
  • the slide frame 2 has a through hole 34 for a screw, which is connected to a shaft of the pressure tappet 35.
  • the through hole 34 can be designed as a threaded hole.
  • the compression spring 25 rests with one end on a spring contact surface 38 of the pressure tappet 35 and is supported with the other end in a receiving opening 43 in the slide frame 2.
  • the pressure tappet 35 is accommodated in a tappet recess 37 of the sealing body 20 or is guided axially therein.
  • the pressure spring arrangement 32 exerts an additional pressure force on the sealing body 20 via the compression spring 25 in order to increase its sealing effect. Additional assembly aid can be dispensed with due to the ability to pre-assemble using the spring holder 33.
  • pressure spring arrangements 32 each with a compression spring 25, are preferably provided.
  • eight pressure spring arrangements 32 can be installed in order to be able to place them on a funnel hood made of flexible ceramic fiber material.
  • four pressure spring arrangements 32 can be sufficient.
  • a corresponding pressure spring arrangement with a compression spring 25 could also be pre-assembled on the sealing body 20, whereby a spring holder 33 would be attached to the sealing body 20 and the pressure tappet 35 would be supported on the slide frame 2.
  • an additional sealing device would preferably be During assembly, the sealing body 20 would then first be inserted into the closure housing 1 together with the pre-mounted pressure spring arrangement.
  • one or more connecting elements 44 are also provided, which connect the slide frame 2 and the sealing body 20 to one another in a form-fitting manner and are designed here as cylindrical driving pins.
  • a recess 45 is provided in the sealing body 20 and a corresponding and matching recess 48 is provided in the slide frame 2, which form a form-fitting, not necessarily play-free, connection with a connecting element 44 designed as a cylindrical driving pin.
  • a through hole 44 for a screw connection 46 is made in the slide frame 2.
  • the driving pin 44 is screwed into the slide frame 2. To facilitate assembly, the driving pin 44 has a chamfer on its free end.
  • connecting elements 44 can also be fastened to the sealing body 20.
  • the displacement force in the displacement direction V is transmitted from the slide frame 2 via the outside of the change ring 24 (and the protective plate connection piece 29) to the sealing body 20, the displacement force in the embodiment of the Figures 4a to 4d be transferred in whole or in part by the connecting elements 44 from the slide frame 2 to the sealing body 20.
  • the connecting elements 44 it is advantageous to arrange several sliding elements 44 distributed around the interchangeable ring 24.
  • one (or several) connecting elements 44 ensure that the sealing body 20 is secured against rotation relative to the interchangeable ring 24.
  • the sealing body 20 is designed to be sufficiently wide, i.e. with a sealing plate with a width adapted to the closure housing 1, if only a narrow remaining lateral gap is left, dirt can accumulate. If the sealing body 20 is secured against rotation, the width of the sealing body can be made narrower, whereby the accumulation of dirt on the sides is avoided and greater operational reliability is achieved.
  • the displacement force is (essentially) transmitted to the sealing body (sealing plate) 20 via the interchangeable ring 24, while the sealing body 20 is secured against rotation by means of a connecting element (driving pin) 44.
  • a connecting element driving pin
  • several displacement elements 44 are preferably provided, the tolerances being dimensioned such that the displacement force is not transmitted via the interchangeable ring 24 but (exclusively) via the connecting elements 44. As a result, the sealing body 20 is simultaneously secured against rotation.
  • the closure housing 1 is first opened or an opened closure housing 1 is provided.
  • the closure housing 1 By pivoting the mounting plate 10 relative to the slide housing 11, or vice versa, the closure housing 1 can be opened and closed on the side of the inlet opening 13.
  • the sealing body 20 is then inserted or placed into the opened closure housing 1, in particular from above, i.e. in the direction of gravity G. In this way, the sealing body 20 is arranged on the inside 17 of the closure housing 1 or inside.
  • the compression springs 25 provided can now be inserted into the receiving openings 43 on the top side of the sealing body 20 facing away from the outlet opening 19.
  • the sliding frame 2 is then inserted into the opened closure housing 1 such that it is mounted so as to be displaceable in the displacement direction V, as previously described.
  • the closure housing 1 is now closed.
  • This assembly method allows a sealing body 20 to be easily mounted on the inside in order to seal the outlet opening 19 against the escape of the protective gas.
  • the slide housing 11 is pivoted onto the mounting plate 10, or vice versa, and then pressed against it, e.g. by a hydraulic cylinder. This pre-tensions the spring elements 14a, 14b and the compression springs 25 to their working dimensions, ie compresses them.
  • the slide closure 100 is locked via the locking mechanism 4 and is now in the operating state.
  • the connecting elements 44 which are preferably fastened to the slide frame 2, are inserted into corresponding recesses 45 in the sealing body 20.
  • simplified assembly is possible by pre-assembling the pressure spring arrangements 32, with a spring holder 33 holding the compression spring 25 captive.
  • the slide frame 2 is then inserted together with the pre-assembled pressure spring arrangement 32 and joined to the sealing body 20.
  • the sealing body 20 can also have a pre-assembled pressure spring arrangement in 32. Additional assembly aid is then not necessary.
  • the described slide closure 100, the described assembly method and the described use of the sealing body 20 for gas sealing of the closure housing 1 of the slide closure 100 on the inner side 17 of the closure housing 1 can achieve increased operational reliability of the slide closure 100, in particular with regard to possible (uncontrolled) escape of protective gas.
  • the slide closure 100 is simple in construction and can be easily assembled.
  • the internal sealing body 20 also means that the slide closure has a small construction volume, in particular a lower construction height.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Sliding Valves (AREA)

Claims (15)

  1. Fermeture à tiroir (100) pour un récipient métallurgique, en particulier une poche de coulée, comprenant
    - un boîtier de fermeture (1) qui peut être fixé au récipient métallurgique, dans laquelle le boîtier de fermeture (1) a une ouverture d'entrée (13) et une ouverture de sortie (19) pour un bain de fusion métallique,
    - un cadre coulissant (2), qui est monté coulissant dans le boîtier de fermeture (1) dans une direction de coulissement (V) et loge une plaque coulissante (6), qui a une ouverture d'écoulement (60) pour le bain de fusion métallique,
    - un manchon de coulée (7) pour décharger le bain de fusion métallique à travers l'ouverture de sortie (19) et
    - un corps d'étanchéité (20) pour rendre l'ouverture de sortie (19) étanche aux gaz, dans laquelle le corps d'étanchéité (20) a une ouverture de passage (40) pour le manchon de coulée (7),
    caractérisée en ce que le corps d'étanchéité (20) est agencé sur un côté interne (17) du boîtier de fermeture (1) et est supporté sur le cadre coulissant (2) par l'intermédiaire d'au moins un ressort de pression (25).
  2. Fermeture à tiroir (100) selon la revendication 1,
    caractérisée en ce que le corps d'étanchéité (20), en particulier une région de bord du corps d'étanchéité (20), est supporté contre une surface interne (16) du boîtier de fermeture (1) .
  3. Fermeture à tiroir (100) selon la revendication 1 ou 2,
    caractérisée en ce que le corps d'étanchéité (20) est agencé de manière à pouvoir coulisser par rapport à l'ouverture de sortie (19), dans laquelle le corps d'étanchéité (20) comprend de préférence une plaque d'étanchéité.
  4. Fermeture à tiroir (100) selon l'une des revendications précédentes,
    caractérisée en ce qu'une surface interne (16) du boîtier de fermeture (1) forme une surface de coulissement pour le corps d'étanchéité (20), dans laquelle des régions de la surface de coulissement ont en particulier une rugosité de surface inférieure à des régions à l'extérieur de la surface de coulissement.
  5. Fermeture à tiroir (100) selon l'une des revendications précédentes,
    caractérisé en ce que le corps d'étanchéité (20) a un joint d'étanchéité (90), de préférence un joint d'étanchéité plat, s'étendant autour de l'ouverture de passage (40) sur une surface d'étanchéité (41) orientée vers une surface interne (16) du boîtier de fermeture (1).
  6. Fermeture à tiroir (100) selon l'une des revendications précédentes,
    caractérisée en ce que le corps d'étanchéité (20) est relié au cadre coulissant (2) de manière à pouvoir coulisser dans une direction de coulage (A) perpendiculaire à la direction de coulissement (V).
  7. Fermeture à tiroir (100) selon l'une des revendications précédentes,
    caractérisée en ce qu'une bague de modification (24) logée dans le cadre coulissant (2) pour maintenir le manchon de coulée (7) s'étend à travers l'ouverture de passage (40) du corps d'étanchéité (20), dans laquelle une surface périphérique interne de l'ouverture de passage (40) du corps d'étanchéité (20) repose de préférence contre une surface périphérique externe de la bague de modification (24).
  8. Fermeture à tiroir (100) selon l'une des revendications précédentes,
    caractérisée en ce qu'une bague de modification (24), logée dans le cadre coulissant (2) pour maintenir le manchon de coulée (7), a au moins un canal de passage de gaz radial (81), qui débouche de préférence dans un interstice de passage de gaz formé entre le corps d'étanchéité (20) et le cadre coulissant (2).
  9. Fermeture à tiroir (100) selon l'une des revendications précédentes,
    caractérisée en ce que le corps d'étanchéité (20) a une ouverture de réception (43) pour un ressort de pression (25) sur un côté orienté vers le cadre coulissant (2) et/ou le cadre coulissant (2) a une ouverture de réception (43) pour un ressort de pression (25) sur un côté orienté vers le corps d'étanchéité (20).
  10. Fermeture à tiroir (100) selon l'une des revendications précédentes,
    caractérisée en ce que le corps d'étanchéité (20) est supporté sur le cadre coulissant (2) par l'intermédiaire d'un agencement de ressort de pression (32), en particulier un agencement qui peut être assemblé au préalable, dans laquelle l'agencement de ressort de pression (32), en particulier un agencement qui peut être assemblé au préalable, comprend de préférence un dispositif de maintien de ressort (33) pour maintenir de manière non détachable au moins un ressort de pression (25).
  11. Fermeture à tiroir (100) selon l'une des revendications précédentes,
    caractérisée en ce que l'agencement de ressort de pression (32), en particulier un agencement qui peut être assemblé au préalable, a une tige de pression de contact (35) qui est fixée de manière élastique, de préférence par l'intermédiaire d'un ressort de pression (25), sur le cadre coulissant (2) ou sur le corps d'étanchéité (20), dans laquelle le ressort de pression (25) est de préférence supporté avec une extrémité de ressort contre le cadre coulissant (2) ou le corps d'étanchéité (20) et avec une autre extrémité contre une surface de contact de ressort (38) de la tige de pression de contact (35).
  12. Fermeture à tiroir (100) selon l'une des revendications précédentes,
    caractérisée en ce que le cadre coulissant (2) et le corps d'étanchéité (20) sont reliés par forme l'un à l'autre par l'intermédiaire d'au moins un élément de liaison (44), de préférence par l'intermédiaire d'au moins une broche d'entraînement, en particulier dans la direction de coulissement (V) et/ou dans une direction de rotation autour de la direction de coulage (A).
  13. Fermeture à tiroir (100) selon l'une des revendications précédentes,
    caractérisée en ce que le corps d'étanchéité (20) a un évidement (45) sur un côté orienté vers le cadre coulissant (2) pour une mise en prise avec un élément de liaison (44) qui est de préférence fixé au cadre coulissant (2).
  14. Procédé d'assemblage d'une fermeture à tiroir (100) pour un récipient métallurgique, en particulier une fermeture à tiroir (100) selon l'une quelconque des revendications 1 à 13, comprenant les étapes suivantes :
    - la fourniture d'un boîtier de fermeture (1) ouvert qui peut être ouvert et fermé sur un côté prévu pour la fixation au récipient métallurgique et a une ouverture d'entrée (13) pour un bain de fusion métallique,
    dans lequel le boîtier de fermeture (1) a une ouverture de sortie (19) pour un bain de fusion métallique sur un côté orienté en éloignement du récipient métallurgique ;
    - l'insertion d'un corps d'étanchéité (20) dans le boîtier de fermeture (1) ouvert pour rendre l'ouverture de sortie (19) étanche aux gaz,
    dans lequel le corps d'étanchéité (20) a une ouverture de passage pour un manchon de coulée (7) pour décharger le bain de fusion métallique à travers l'ouverture de sortie (19) ;
    - l'insertion d'un cadre coulissant (2) monté coulissant dans le boîtier de fermeture (1) ouvert ;
    - l'agencement d'au moins un ressort de pression (25) sur un côté du corps d'étanchéité (20) orienté en éloignement de l'ouverture de sortie (19) après l'insertion du corps d'étanchéité (20) et avant l'insertion du cadre coulissant (2) monté coulissant ;
    - la fermeture du boîtier de fermeture (1).
  15. Procédé selon la revendication 14,
    caractérisé par l'assemblage préalable d'un agencement de ressort de pression sur le cadre coulissant (2) ou sur le corps d'étanchéité (20),
    dans lequel l'agencement de ressort de pression comprend de préférence un dispositif de maintien de ressort (33) pour maintenir de manière non détachable au moins un ressort de pression (25) .
EP21722171.2A 2020-04-29 2021-04-26 Fermetures de type à tiroir pourvues d'un corps d'étanchéité interne et procédé de montage Active EP4142965B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020111695.0A DE102020111695B3 (de) 2020-04-29 2020-04-29 Schieberverschluss mit innenliegendem Dichtkörper und Verfahren zu dessen Montage
PCT/EP2021/060777 WO2021219525A1 (fr) 2020-04-29 2021-04-26 Fermetures de type à tiroir pourvues d'un corps d'étanchéité interne et procédé de montage

Publications (3)

Publication Number Publication Date
EP4142965A1 EP4142965A1 (fr) 2023-03-08
EP4142965B1 true EP4142965B1 (fr) 2024-05-08
EP4142965C0 EP4142965C0 (fr) 2024-05-08

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EP21722171.2A Active EP4142965B1 (fr) 2020-04-29 2021-04-26 Fermetures de type à tiroir pourvues d'un corps d'étanchéité interne et procédé de montage

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Country Link
EP (1) EP4142965B1 (fr)
DE (1) DE102020111695B3 (fr)
WO (1) WO2021219525A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS613653A (ja) * 1984-06-15 1986-01-09 Kawasaki Steel Corp シ−ル機構を有するスライデイングノズル装置
DE4007993A1 (de) 1990-03-13 1991-09-19 Zimmermann & Jansen Gmbh Schieberverschluss fuer ein metallurgisches giessgefaess, insbesondere eine giesspfanne
JP3484820B2 (ja) 1995-04-20 2004-01-06 大同特殊鋼株式会社 快削鋼の連続鋳造方法
US6250521B1 (en) 2000-02-02 2001-06-26 Ltv Steel Company, Inc. Preventing air aspiration in slide gate plate throttling mechanisms
DE202011111055U1 (de) * 2011-06-27 2018-12-12 Knöllinger FLO-TEC GmbH Schieberverschluss für ein metallurgisches Gießgefäß, insbesondere Gießpfanne
DE202015103079U1 (de) 2015-06-12 2015-07-01 Knöllinger FLO-TEC GmbH Schieberverschluss für einen metallurgischen Behälter

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EP4142965A1 (fr) 2023-03-08
DE102020111695B3 (de) 2021-07-15
WO2021219525A1 (fr) 2021-11-04
EP4142965C0 (fr) 2024-05-08

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