WO2023111202A1 - Sliding closure for a metallurgical vessel, and an exchangeable spout - Google Patents
Sliding closure for a metallurgical vessel, and an exchangeable spout Download PDFInfo
- Publication number
- WO2023111202A1 WO2023111202A1 PCT/EP2022/086196 EP2022086196W WO2023111202A1 WO 2023111202 A1 WO2023111202 A1 WO 2023111202A1 EP 2022086196 W EP2022086196 W EP 2022086196W WO 2023111202 A1 WO2023111202 A1 WO 2023111202A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spout
- interchangeable
- interchangeable spout
- stop
- face
- Prior art date
Links
- 239000003566 sealing material Substances 0.000 claims abstract description 24
- 239000004570 mortar (masonry) Substances 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011470 perforated brick Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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
- B22D41/14—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
-
- 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
- B22D41/24—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 characterised by a rectilinearly movable plate
-
- 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
- B22D41/26—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 characterised by a rotatively movable plate
Definitions
- the invention relates to a slide closure for a metallurgical vessel, which is equipped with a slide unit or a mechanical part, a refractory closure plate that can be inserted therein, a refractory interchangeable spout that can be connected tightly to the closure plate or to a refractory sleeve, with an upper end face and with an outlet opening and a fastening means, through which the interchangeable spout can be pressed against a stop in the slide unit or in the mechanical part, according to the preamble of claim 1.
- a device for a sliding closure of the aforementioned type is disclosed in the publication DE 34 23 191 C1, in which the refractory interchangeable spout is held in a fastening sleeve which is guided in the connection base of the slide frame and, when the interchangeable spout is attached to the slide plate, against an end face in the terminal base arranged metallic stop is pressed.
- a disadvantage of this design of the stop is that the exchangeable spout is inadequately fixed in the lateral direction in the upper area and is therefore not held in a stable manner in the event of possible lateral forces. A secure centering of the interchangeable spout relative to the slide frame is therefore not guaranteed.
- it is also disadvantageous that the tolerances of the refractory interchangeable spout can only be partially eliminated in the device with the stop used in this device.
- the invention is based on the object of avoiding these disadvantages and creating a slide closure of the type mentioned at the outset that enables secure axial and lateral fixation of the same with simple means and also compensates for the refractory tolerances, in particular of the interchangeable spout. According to the invention, this object is achieved by the characterizing features of claim 1 .
- the stop in the slide unit or in the mechanical part and the interchangeable spout each have a stop surface that tapers conically towards the closure plate or the sleeve, which in the installed state is sealed with a refractory sealing material, preferably a layer of mortar between the interchangeable spout and the slide plate or Sleeve and between the interchangeable spout and the slide unit or the mechanical part are correspondingly pressed together, on the one hand an axial as well as a laterally or radially acting fixation of the interchangeable spout in the slide unit is realized, in which a kind of wedging occurs.
- the fastening means thus presses the interchangeable spout against a stop in the slide unit or in the mechanical part.
- the stop in the slide unit or in the mechanical has a stop surface that tapers conically towards the slide plate or the sleeve.
- the interchangeable spout also has a stop surface that tapers conically towards the slide plate or the sleeve.
- the conically tapering stop surfaces of the stop and of the interchangeable spout are expediently dimensioned at an angle, preferably between 5° and 45°, in relation to the axial direction of the outlet opening. Optimally, these angles are between 10° and 20°.
- the angles for the interchangeable spout and for the mechanical stop can each be designed identically. In order to ensure the function, the angles of the conically tapered stop surfaces can be between 5° and 45°, with a smaller angle achieving better lateral fixation, while the axial fixation of the interchangeable spout is improved with an increasing angle.
- the invention preferably provides that in the assembled state the joint thickness of the refractory sealing material between the conically tapered stop faces and/or the slide plate and the interchangeable spout on its upper face is preferably less than 0.5 mm. This makes it possible to connect the mortar joint on the face side with that between the stop surfaces.
- the conically tapering stop surface of the stop extends from a top end of the slide unit and the conically tapering stop surface of the interchangeable spout from its top end, so that there is an advantageous sealing connection between this top end and the stop surfaces.
- the conically tapering abutment surfaces are designed in such a way that, in the installed state, a joint is formed between them through the refractory sealing material, the joint thickness of which joint is preferably less than 0.5 mm.
- the slide plate or the sleeve and the interchangeable spout are designed in such a way that, in the assembled state, a joint is formed between the slide plate or the sleeve and the end face of the interchangeable spout due to the refractory sealing material, the joint thickness of which is also preferably less than 0.5 mm.
- the interchangeable spout is preferably provided with an external support shoulder below the stop surface, which rests on a corresponding clamping surface of the fastening means. In this way, the interchangeable spout is optimally braced with the stop surface.
- An assembly device that can be placed on the interchangeable spout is advantageously provided, which is designed to apply the sealing material in a defined shape to the upper end face and the lateral stop surface of the interchangeable spout while the interchangeable spout is in the unmounted, detached state.
- the interchangeable spout with the sealing material is then pushed into the slide unit of the slide closure and is pressed against the stop surface of the slide unit and braced by this fastening means. This achieves a defined connection between the interchangeable spout, the sealing material, the stop surface and the slide plate, see above that a very secure seal is created, by means of which the risk of breakthrough can be reduced in a simple manner.
- the refractory interchangeable spout according to the invention is designed with a conically widening stop surface adjoining its upper end face, which is used for its wedging fixation in the sliding closure.
- the external support shoulder below the conically widening stop surface is designed to extend inward, preferably conically, so that a resultant clamping force is generated in the axial direction of the outlet opening against the closure plate and this secure attachment of the interchangeable spout in the sliding closure is ensured.
- the interchangeable spout has a refractory sleeve and, on its outer shell, a casing, preferably a sheet metal casing, extending approximately from its lower end at least to above the supporting shoulder, with the casing preferably extending to the upper end of the interchangeable spout.
- this refractory sleeve is protected against selective compressive forces when the interchangeable spout is braced and it can be cast into this casing.
- the casing achieves an optimal sealing effect against harmful air intake through the porous refractory material, in particular when there is a negative pressure in the outlet opening when the sliding closure is throttled.
- the interchangeable spout could be designed differently in terms of its shape. For example, a flat, curved, spherical or other end face can be provided on the upper and/or lower end face. The stop surface would then connect to the outer circumference of the end face.
- a different shape, for example a tongue and groove system, can also be arranged on the end face.
- FIG. 1 shows a longitudinal section through a partially illustrated sliding closure on a metallurgical vessel
- FIG. 2 shows an enlarged partial section of the sliding closure according to FIG. 1 with a variant of a fastening means
- FIG 3 shows a longitudinal section through a jig for applying a sealant in the upper area of a refractory replacement nozzle.
- FIG. 1 and 2 show details of a sliding closure 1 attached to a metallurgical vessel 30 for opening or closing an outlet opening 24 from the vessel 30, of which only the outer metal jacket 31 and a refractory perforated brick 32 are indicated.
- This metallurgical vessel 30 is usually a steel casting ladle in a continuous casting plant for continuously feeding molten steel into a mold or the like. In principle, however, it could also be a vessel other than a steel ladle, such as a tundish barrel, a converter, an electric furnace or even a metallurgical vessel in the non-ferrous metal sector.
- the slide closure 1 is provided with an upper fixed base plate 2 in a housing 36 and a slide plate 3 in a slide unit 7, the latter being guided in a longitudinally adjustable manner in the housing 36 and enabling this opening and closing of the outlet opening 24 in a known manner.
- a refractory inlet sleeve 33 protruding into the vessel 30 and below the slide plate 3 there is an exchangeable spout 4 also made of refractory material.
- the inlet sleeve 33 is mortared into the perforated brick 32 and positioned on the underside of the centering means 38 in the housing 36 .
- the interchangeable spout 4 for its part can be clamped by a fastening means 8 in a receiving part 6 of the slide unit 7 .
- a sleeve-shaped bayonet ring 5 that can be screwed into the receiving part 6 is expediently provided as a detachable closure, which can be a bayonet, a threaded closure or some other fastening means.
- the mutual threaded bracing supports 5', 6' of this fastening means 8 can be seen in the tensioned state.
- a connecting sleeve 35 for example a shroud, is indicated at the lower end of the interchangeable spout.
- the stop 9 in the slide unit 7 and the interchangeable spout 4 are each formed with a stop surface 16, 17 that tapers conically towards the slide plate 3 a layer of mortar, in between corresponding and overlapping are pressed together.
- the stop has a stop surface 16, and the interchangeable spout has a stop surface 17.
- the stop faces 16, 17 of the stop 9 and the interchangeable spout 4 are preferably at an angle of between 5° and 45°, and particularly advantageously between 10° and 20°, in relation to the axial direction of the outlet opening 24.
- the two angles can be identical or different. In the exemplary embodiment shown, both angles are 15° each. These angles can be varied according to the dimensions of the interchangeable spout. Smaller angles are more advantageous for more compact interchangeable nozzles.
- These conically tapered stop surfaces 16, 17 each have the shape of a truncated cone and advantageously start at the upper end of the receiving part 6 or from the upper end face 15 of the interchangeable spout 4 and extend over a height of preferably 10 to 50 millimeters. In principle, these stop surfaces 16, 17 could be offset somewhat downwards and a ring surface or the like would be provided at the top.
- the interchangeable spout 4 is advantageously provided with an external support shoulder 11 below its stop surface 17, which rests on the corresponding clamping surface of the bayonet ring 5 of the fastening means.
- This support shoulder 11 is preferably in the form of a truncated cone or another shape, extending inwards and causes a resultant clamping force in the axial direction of the outlet opening 24 against the closure plate 3 .
- the interchangeable spout 4 advantageously has a one-part or multi-part refractory sleeve and a casing, preferably a sheet metal jacket 14, which extends approximately from its lower end face 12 to the outer edge 13 above the supporting shoulder 11, which, if necessary, also covers the area up to the upper end face 15 of the Exchange spout 4 may include.
- the refractory material for example concrete, can thus be poured directly into the metal jacket 14 during its production.
- the stop 9 according to the invention in the slide unit 7 offers the considerable advantage of better lateral and axial fixing of the interchangeable spout 4 in the installed state.
- This rigid wedging connection thus ensures that it is centered securely, even if lateral forces occur transversely to the direction of the axis.
- a so-called open check i.e. an inspection of the slide plates 2, 3 when the slide unit 7 is swung out and thus the closure is open, with the interchangeable spout 4 remaining in the installed state, is made possible without the risk that the mortar layer 19 between the Interchangeable spout 4 and the closure plate 3 or the stop 9 would leak by breaking or tearing.
- the sealing material is applied with a defined shape to the upper end face 15 and the lateral stop surface 17 of the interchangeable spout 4 by means of an assembly device 20 that can be placed on the interchangeable spout 4 .
- the exchange spout is located in the unassembled, released state outside of the sliding lock 1.
- the mounting device 20 that can be inserted into the top of the loose interchangeable spout 4 preferably has a retaining ring 21 that surrounds the stop surface 17 and has an approximately cylindrical bore 21', which has a diameter approximately the same as that of the interchangeable spout 4 below the tapering stop surface 17.
- a centering element 23 is provided which is connected to the retaining ring 21 via radial webs 22 and can be positioned in the outlet opening 24 of the interchangeable spout 4 with almost no play before the mortar is applied.
- the centering element could also be designed in such a way that it could, for example, be positioned on the outside of the replacement spout.
- An opening 19* with a V-shaped cross section is thus formed between the stop surface 17 and the retaining ring 21, in which the sealing material is pressed all around.
- the assembly device 20 is pulled out of the interchangeable spout 4 and the sealing material adheres to the outside of the stop surface 17 and forms a cylindrical outside.
- this assembly device 20 could be configured differently.
- this assembly device 20 instead of webs 22, only one connecting element could be provided. Care should preferably be taken to ensure that the opening 19' and the upper end face 15 are easily accessible for grouting
- the still deformable mortar of the stop 9 is then space between the interchangeable spout 4 and the receiving part 6 and formed there into a largely uniformly thick mortar joint between the stop surface 16, 17 of the stop 9 and the interchangeable spout 4, which preferably has a thickness of 3 to 5 mm to one of less than 0 .5 mm is reduced.
- the interchangeable spout 4 could be clamped in a mechanical part instead of in the adjustable slide unit 7, which cannot be moved and could be designed, for example, as a cover unit for a three-plate sliding closure with a lower fixed closure plate. It could also be pressed against a refractory sleeve or the like, which would be arranged, for example, underneath the closure plate as a unit with it or independently of it. Furthermore, the interchangeable spout could be equipped in two parts with a lower and an upper sleeve.
- a prefabricated ring-shaped sealing foil could also be placed on the interchangeable spout 4 before assembly, which would then also dry out in the assembled state when the melt is poured out and the resulting heating and would stick to the refractory sleeve and the closure plate.
- the interchangeable spout could be designed differently in terms of its shape.
- a curved, spherical or other shape could be provided on the outer circumference at the The widening stop surface.
- a different shape could also be provided on the end face 15, for example a tongue/groove connection known per se with corresponding annular shoulders and grooves between the interchangeable spout and the closure plate or at the bottom between it and the subsequent sleeve.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA3241135A CA3241135A1 (en) | 2021-12-17 | 2022-12-15 | Sliding closure for a metallurgical vessel and an exchangeable nozzle |
AU2022410367A AU2022410367A1 (en) | 2021-12-17 | 2022-12-15 | Sliding closure for a metallurgical vessel, and an exchangeable spout |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21215722.6A EP4197669A1 (en) | 2021-12-17 | 2021-12-17 | Sliding closure for a metallurgical vessel and an exchangeable discharge |
EP21215722.6 | 2021-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023111202A1 true WO2023111202A1 (en) | 2023-06-22 |
Family
ID=78957185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/086196 WO2023111202A1 (en) | 2021-12-17 | 2022-12-15 | Sliding closure for a metallurgical vessel, and an exchangeable spout |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP4197669A1 (en) |
AR (1) | AR128008A1 (en) |
AU (1) | AU2022410367A1 (en) |
CA (1) | CA3241135A1 (en) |
TW (1) | TW202327755A (en) |
WO (1) | WO2023111202A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3013975A1 (en) * | 1979-05-25 | 1980-12-04 | Stopinc Ag | TURNTABLE CLOSURE FOR METALLURGICAL VESSELS |
DE3328901A1 (en) * | 1982-08-20 | 1984-02-23 | FLO-CON Systems, Inc., 61820 Champaign, Ill. | VALVE WITH SLIDING PASSAGE |
DE3423191C1 (en) | 1984-06-22 | 1985-04-11 | Metacon AG, Zürich | Device for slide closures with interchangeable spouts |
DE3500866A1 (en) * | 1985-01-12 | 1986-07-17 | Stopinc Ag, Baar | Sliding gate for the nozzle on metallurgical vessels, in particular steel-casting ladles |
CN112518794A (en) * | 2020-11-04 | 2021-03-19 | 中国空间技术研究院 | Gripping device and control method thereof |
-
2021
- 2021-12-17 EP EP21215722.6A patent/EP4197669A1/en not_active Withdrawn
-
2022
- 2022-11-16 TW TW111143771A patent/TW202327755A/en unknown
- 2022-12-15 CA CA3241135A patent/CA3241135A1/en active Pending
- 2022-12-15 AU AU2022410367A patent/AU2022410367A1/en active Pending
- 2022-12-15 WO PCT/EP2022/086196 patent/WO2023111202A1/en active Application Filing
- 2022-12-16 AR ARP220103483A patent/AR128008A1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3013975A1 (en) * | 1979-05-25 | 1980-12-04 | Stopinc Ag | TURNTABLE CLOSURE FOR METALLURGICAL VESSELS |
DE3328901A1 (en) * | 1982-08-20 | 1984-02-23 | FLO-CON Systems, Inc., 61820 Champaign, Ill. | VALVE WITH SLIDING PASSAGE |
DE3423191C1 (en) | 1984-06-22 | 1985-04-11 | Metacon AG, Zürich | Device for slide closures with interchangeable spouts |
DE3500866A1 (en) * | 1985-01-12 | 1986-07-17 | Stopinc Ag, Baar | Sliding gate for the nozzle on metallurgical vessels, in particular steel-casting ladles |
CN112518794A (en) * | 2020-11-04 | 2021-03-19 | 中国空间技术研究院 | Gripping device and control method thereof |
Also Published As
Publication number | Publication date |
---|---|
AR128008A1 (en) | 2024-03-20 |
EP4197669A1 (en) | 2023-06-21 |
TW202327755A (en) | 2023-07-16 |
CA3241135A1 (en) | 2023-06-22 |
AU2022410367A1 (en) | 2024-06-20 |
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