EP4440762A1 - Abdichtsystem für eine stranggiessanlage - Google Patents
Abdichtsystem für eine stranggiessanlageInfo
- Publication number
- EP4440762A1 EP4440762A1 EP22817883.6A EP22817883A EP4440762A1 EP 4440762 A1 EP4440762 A1 EP 4440762A1 EP 22817883 A EP22817883 A EP 22817883A EP 4440762 A1 EP4440762 A1 EP 4440762A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- head
- sealing system
- dummy bar
- adapter element
- bar head
- 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.)
- Granted
Links
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
- B22D11/08—Accessories for starting the casting procedure
-
- 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
- B22D11/08—Accessories for starting the casting procedure
- B22D11/088—Means for sealing the starter bar head in 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
- B22D11/08—Accessories for starting the casting procedure
- B22D11/086—Means for connecting cast ingots of different sizes or compositions
Definitions
- the invention relates to a sealing system for use with a dummy bar head of a continuous casting plant according to the preamble of claim 1.
- the invention is based on the object of creating a sealing system which is suitable for use with a dummy bar head of a continuous casting plant, with which the start of the continuous casting process can be carried out more easily and cost-effectively and the associated work preparations can be carried out more quickly.
- a sealing system according to the present invention is provided for use with a dummy bar head of a continuous casting plant and comprises a head element, in particular a plate-shaped one, on the edge region of which a circumferential seal is attached.
- a metal adapter element is characteristic of this sealing system, the underside of which can be attached to an upper end face of a dummy bar head, the head element being able to be attached to an upper side of the adapter element and thereby being connectable to the dummy bar head.
- the sealing system according to the invention if the head element is designed as a standardized component.
- the adapter element which is part of the sealing system according to the invention, it should be emphasized at this point that it is a separate component that can be arranged between the head element and an upper end face of a dummy bar head. This ensures that the head element can be connected to or with the upper end face of the dummy bar head with the aid of the adapter element.
- an upper side of the adapter element is designed in a standardized manner in the same way as the head element, so that it is always possible to attach the head element to the upper side of the adapter element.
- the invention is based on the essential knowledge that it is possible by means of the adapter element to also connect a head element to possibly different dummy bar heads of a continuous casting installation. Particularly in the event that the head element with the seal attached thereto is designed as a standardized component, this results in the advantage that a head element designed in this way can be used for a large number of possibly different dummy bar heads. This ensures that the head element with the seal attached to it can be manufactured very inexpensively and can be kept available for a large number of possibly different dummy bar heads, namely as explained thanks to the characteristic adapter element, with which the head element can be connected to a dummy bar head.
- the head element with a seal attached thereto which can be made of plastic or have a plastic component, is designed as a “disposable item”.
- a “disposable item” for the purposes of the present invention, this means that such a head element, when it comes into contact with the steel or metal melt and the resulting cast metal strand or continuously cast product at the beginning of a continuous casting process, then initially forms a permanent connection with the hot strip and only after sufficient solidification of an intermediate or end product formed from it, e.g. a slab, is separated from this product by cutting.
- first fastening means that they have at least one web which has a bead or hook at its free end, and at least one recess.
- the bead or hook on the one hand and the recess on the other hand can be brought into engagement with one another in order to thereby achieve a positive connection between the adapter element and the dummy bar head.
- the web can be provided as a cantilevered or protruding part on an underside of the adapter element, with the bead or hook being formed on a free end thereof.
- the recess can be formed in the dummy bar head, preferably on or adjacent to its upper end face, and in this case include a widened area. So she can Recess may be formed in the dummy bar head adjacent to its upper end face and open into this end face. In this context, it is expedient if the bead and the widened area of the recess are designed to be complementary to one another.
- a plurality of webs are attached to the underside of the adapter element, which can then be positively hooked into the recesses of the dummy bar head.
- three, four or possibly >4 such webs can be provided on the underside of the adapter element, with a correspondingly adapted number of recesses in the dummy bar head adjacent to its upper end face.
- the first fastening means mentioned above can have a bottleneck-like narrow section which, starting from the upper end face of the dummy bar head, leads into the widened area of the recess.
- the ridge includes a slender neck portion located between the mushroom-like ridge of the ridge and the underside of the adapter member.
- the recess is open on at least one side surface of the dummy bar head, so that the web with its bead (or alternatively: with its hook) can be introduced into the recess from this side surface.
- the adapter element it is possible on the one hand to connect the adapter element to or on the upper end face of the dummy bar head, in particular without tools, and also to separate the adapter element from the dummy bar head when the continuous casting process is advanced by clicking on the Adapter element a force (tensile or compressive force) is exerted transversely to the transport direction of the dummy bar head.
- the head element and the adapter element each have a rectangular cross section in a plane running orthogonally to the transport direction of the dummy bar head, which has a long side and a short side.
- a rectangular cross section is characterized in that its long side is many times larger than the short side.
- both the head element and the adapter element with their cross section in the plane orthogonal to the transport direction of the dummy bar head are each adapted to a cross section of a mold of a continuous casting plant.
- the long side of the rectangular cross-section is many times larger than the short side, it may be pointed out that this is typical in the continuous casting of slabs.
- a short side of the rectangular cross section of the adapter element or head element has a length of at least 100 mm, preferably 120 mm, more preferably more than 150 mm.
- the length of the short side of the rectangular cross section influences the thickness of a later solidified slab, or that the length of this short side corresponds to the thickness of a solidified slab.
- second fastening means are provided, by means of which the head element and the adapter element can be connected to one another.
- these second fastening means it is also expedient for these second fastening means if they function according to the positive locking principle.
- the second fastening means in the head element a plurality of through openings are formed, preferably at the same distance from one another.
- a plurality of bolts, screws or the like can be attached to the upper side of the adapter element, preferably also at the same distance from one another and in particular adapted to the distance between the passage openings.
- a plurality of bolts, screws or the like can be attached to the upper side of the adapter element, the spacing of these bolts, screws or the like relative to one another being selected in the same way as the spacing of the through-openings formed in the head element relative to one another.
- the head element can be connected to the adapter element in a simple manner after the head element has been pushed onto the adapter element from above, as explained, and the screws pass through the through-openings formed in the head element that are screwed onto the free ends of the screws Nuttem, which then each come into contact with the top of the adapter element and thus press the head element against the adapter element.
- a slot is formed in each of the bolts, which, as explained, are attached to the upper side of the adapter element.
- a wedge is provided which can be inserted into this slot.
- Such a wedge fulfills the function that after the head element has been pushed from above with its through openings on the bolts attached to the top of the adapter element, the head element can be jammed on or with its top by the Wedge driven into the slot of a bolt becomes. The only tool you may need to do this is a hammer to drive the key into the slot.
- a method of manufacturing a metallic product by continuous casting using a sealing system having the characteristics mentioned above.
- the molten metal is sufficiently cooled when it is poured into the mold of a continuous casting plant through contact with the upper side of the head element and the elevation(s) provided there, so that this start of the process can be carried out without cooling scrap.
- FIG. 1 shows a side view of a sealing system according to the invention in the assembled state
- Fig. 3 is a plan view (from above) of the sealing system of Fig. 1,
- FIG. 4 shows a perspective view of individual parts of the sealing system from FIG. 1 , which comprises a head element and an adapter element,
- FIG. 5 shows a perspective view of the sealing system from FIG. 4 when its adapter element is already connected to a dummy bar head
- Fig. 6 is a side view of a web on an underside of a
- FIG. 7 is a side view of a recess formed in a dummy bar head adjacent to its upper end face.
- Fig. 8 is a side view of a bolt attached to a top of the adapter member
- FIG. 1 shows a side view of the sealing system 10 according to the invention when it is mounted on a dummy bar head 1 .
- the sealing system 10 consists of several components and specifically comprises a head element 12 and an adapter element 18.
- the head element 12 and the adapter element 18 are preferably made of metal, for example steel.
- the individual components of the sealing system 10 are shown in perspective in an exploded view in FIG. 4 .
- the adapter element 18 can be attached with its underside 19 to or on an upper end face 2 of the dummy bar head 1 (cf. FIG. 4, bottom representation).
- the invention includes first fastening means 22, which are explained separately below.
- the head element 12 can be placed from above onto an upper side 20 of the adapter element 18 and suitably fastened there by means of second fastening means 30 .
- the head element 12 according to the embodiment shown here is plate-shaped. This leads to the advantage that the head element has a low weight and can be produced inexpensively.
- a circumferential seal 14 is fitted along an edge region 13 of the head element 12 .
- This seal 14 can be made of plastic and is formed on the edge area 13 of the head element 12 or suitably fastened. In this respect, the head element 12 and the seal 14 attached thereto form a structural unit.
- seal 14 it is pointed out separately at this point that its external dimensions are slightly larger than a cross section of a Mold of a continuous casting plant in a plane orthogonal to the transport direction of the dummy bar head.
- FIG. 9 in which a mold 4 is shown in simplified form, with the sealing system 10 according to the invention being arranged within this mold 4 and a lower opening 5 of the mold being able to be sealed off by means of the seal 14.
- FIG. 2 shows a cross section through dummy bar head 1 along line A-A of FIG. 1 and makes it clear that this cross section is rectangular.
- the proportions of this are chosen such that a long side L is many times larger than a short side K of this cross section.
- the cross section of the dummy bar head 1 shown in FIG. 2 it may be pointed out that the cross section of the adapter element 18 is selected in the same way and thus has the same proportions.
- the outer dimensions of the head element 12, which are shown in the plan view of FIG. 3, correspond to the cross section of FIG.
- the proportions of the head element 12 and the adapter element 18 are selected such that they are each adapted to a cross section of the mold 4 of a continuous casting plant (not shown) (cf. FIG. 9) and can thus be introduced into the mold 4 .
- a plurality of elevations 16 are attached to an upper side 15 of the head element 12 . These elevations 16 are designed in such a way that they have the largest possible contact surface. In the exemplary embodiment shown here, these elevations can each have a multi-part structure which is designed in the shape of a cross in a plan view (cf. FIG. 3).
- the elevations 16 serve the purpose of coming into contact with liquid steel melt at the beginning of a continuous casting process, which is poured into the mold 4 of a continuous casting installation from above.
- the elevations 16 are flowed around by the molten steel, with the result that from the steel melt-forming hot strand firmly connected to the head element 12 on its upper side 15 and the elevations 16 attached there. Due to the large contact surfaces of the elevations 16, a reduction in the temperature of the steel melt is advantageously achieved upon contact with the steel melt, which contributes to its solidification.
- the first fastening means 22 with which the adapter element 18 is fastened to the upper end face 2 of the dummy bar head 1 are explained below.
- the first fastening means 22 comprises at least one web 24, which has a mushroom-shaped bead 25 at its free end, and at least one recess 26 with a widened area 27.
- the recess 26 in the dummy bar head 1 is formed adjacent to its upper end face 2 , namely in such a way that this recess 26 opens into this end face 2 .
- the recess 26 has a widened area 27 . Between this widened area 27 and the upper end face 2 of the dummy bar head 2 , the recess 26 includes a narrow bottleneck-like section 28 which, starting from the upper end face 2 of the dummy bar head 1 , leads into the widened area 27 of the recess 26 .
- this is open on at least one side surface of the dummy bar head 1 (shown in the lower representation of FIG. 4 in the image foreground).
- the jetty 24 with its bead 25 to introduce laterally into the recess 26 from this open side surface.
- 5 shows an assembled state of the adapter element 18 when the webs 24, which are attached to the underside 19 of the adapter element 18, have all been introduced into the associated recesses 26 of the dummy bar head 1.
- the bead 25 of the web 24 and the widened area 27 of the recess 26 are designed to complement one another, namely in such a way that the web 24 with its bead 25 can be introduced into the recess 26 and its widened area 27 without jamming.
- a form-fitting connection is thus produced between the adapter element 18 and the dummy bar head 1 on its upper end face 2 when the webs 24 are inserted into the recesses 26 as explained.
- the second attachment means 30 are explained below, with which attachment of the head element 12 to or on the upper side 20 of the adapter element 18 is achieved.
- the second fastening means 30 comprise a plurality of through-openings 31 which are formed in the head element 12, which is in particular in the form of a plate. These passage openings 31 are shown, for example, in the upper representation of FIG. 4 and in the same way in FIG.
- the second fastening means 30 also include a plurality of bolts 32 which are attached to the top side 20 of the adapter element 18 (cf. FIGS. 4+5).
- the bolts 32 In order to attach the bolts 32 to the upper side 20 of the adapter element 18 it can be provided that through-openings (not shown) are formed in the upper side 20 for this purpose, in which the bolts 32 are inserted. Aligned with these passage openings, “windows” or openings 21 are formed in the adapter element 18 , as can be seen in the middle illustration of FIG. 4 and also in FIG. 5 . In any case, the bolts 32 are in the said Through opening attached to the top 20 of the adapter element 18 in such a way that they protrude with their lower free ends into the associated window 21 and can be suitably fixed there by means of a nut 33 (cf. FIG. 1).
- At least one cam N or the like is fastened or formed on the outer peripheral surface of a bolt 32 in the region above the upper side 20 of the adapter element 18 .
- the cam N serves to ensure that a bolt 32, when it is introduced into an associated through-opening in the upper side 10 of the adapter element 18, sits with this cam N on the upper side 20 of the adapter element 18 and thus reaches a defined end position in which as explained, it is possible to fix the bolt 32 by means of the nut 33 at its lower free end.
- the said windows 21, which are formed in the adapter element 18 adjacent to the upper side 18 thereof, are helpful.
- the bolt 32 has an elongated hole 34 adjacent an upper free end thereof into which a wedge 36 can be inserted. This serves to attach the head element 12 to the adapter element 18, as explained below:
- the head element 12 can be placed from above onto the top 20 of the adapter element 18, with the bolts 32 being inserted through the through openings 31 formed in the head element 12.
- the plate-shaped head element 12 is located below the elongated holes 34, which are formed in the respective bolts 32.
- wedges 36 are driven through the elongated holes 34 of the respective bolts 32, so that the wedges 36 are seated on the upper side 15 of the head element (12). In this way, a form-fitting clamping of the head element 12 on or with the upper side 20 of the adapter element 18 can be achieved, with a hammer or the like being required at most for this purpose.
- the head element 12 it is expedient for the head element 12 to be designed as a standardized component. With the help of the adapter element 18 it is then possible to connect such a standardized head element 12 with possibly different dummy bar heads 1 .
- an adapter element 18 is first equipped with the bolts 32 on its upper side 20 .
- the adapter element 18 is then connected in a form-fitting manner to the upper end face 2 of the dummy bar head 1 by inserting the webs 24 with the beads 25 formed thereon into the associated recesses 26 of the dummy bar head 1 from the side (cf. FIG. 5).
- the head element 12 (with the seal 14 already attached to it) is placed on the upper side 20 of the adapter element 18 as explained, with the bolts 32 passing through the through-openings 31 of the head element 12 .
- Jamming of the head element 12 on or at the top 20 of the adapter element 18 is then carried out using the wedges 36, which are driven into the elongated holes 34 of the respective bolts 32.
- the sealing system 10 thus formed can be introduced into the mold 4 of a continuous casting plant, as illustrated in FIG.
- a plate located in the foreground of the image is indicated only with phantom lines, so that the sealing system 10 located behind it can be seen.
- the dummy bar head 1 is then positioned in the mold 4 in preparation for casting in such a way that the lower opening 5 is suitably closed or sealed by means of the seal 14 .
- the present invention ensures that a liquid molten metal, for example liquid steel, cannot flow out of the mold 4 downwards during actual casting.
- the contact of the liquid metal or steel melt with the elevations 16, which are attached as explained on the top 15 of the head element 12 and have a relatively large contact surface, is achieved according to the invention that the metal or steel melt undergoes a temperature reduction, which contributes to a desired solidification of the melt.
- the use of cooling scrap can be dispensed with during casting or at the beginning of a continuous casting process.
- the dummy bar head 1 is pulled out of the mold 4 in the transport direction T by means (not shown), for example in the form of a chain or the like, which engages with the undercut or groove 4 formed at a lower end of the dummy bar head 1 is brought.
- the dummy bar head 1 can be detached from the adapter element 18 by a Force is exerted perpendicularly or transversely to the transport direction T. As a result, the webs 24 are then driven out of the recesses 26, as a result of which the dummy bar head 1 and the adapter element 18 are separated from one another and thus at least the dummy bar head 1 can be used again.
- the adapter element 18 can also be used repeatedly for a renewed continuous casting process. To this end, a portion of the solidified hot billet which has bonded to the head member 12 may be severed and then the nuts 21 are loosened from the lower ends of the bolts 32 so that the adapter member 18 can be removed from the bolts 32 . When the adapter element 18 is used again, new bolts 32 only have to be attached to its upper side 20 . On the other hand, the “old” bolts 32 remain in the solidified area of the hot strand and then form “waste” together with the head element 12 .
- first fastening means 22 shown in FIG. 4, FIG. 6 and FIG Area 27, is only one possible embodiment of this first fastener 22.
- these form-fitting first fastening means 22 can also include a hook (not shown) or the like (preferably on the free end of the web 24) which is connected to a part or section on the dummy bar head 1 , for example in Form of a recess or an undercut, can be engaged in order to thereby realize a positive connection between the adapter element and the dummy bar head, which can also be released again if necessary.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Continuous Casting (AREA)
- Gasket Seals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021213770.9A DE102021213770A1 (de) | 2021-12-03 | 2021-12-03 | Abdichtsystem für eine Stranggießanlage |
| PCT/EP2022/081394 WO2023099141A1 (de) | 2021-12-03 | 2022-11-10 | Abdichtsystem für eine stranggiessanlage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4440762A1 true EP4440762A1 (de) | 2024-10-09 |
| EP4440762B1 EP4440762B1 (de) | 2025-02-26 |
Family
ID=84389310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22817883.6A Active EP4440762B1 (de) | 2021-12-03 | 2022-11-10 | Abdichtsystem für eine stranggiessanlage |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20250001485A1 (de) |
| EP (1) | EP4440762B1 (de) |
| JP (1) | JP7764610B2 (de) |
| KR (1) | KR20240089390A (de) |
| CN (1) | CN118302262A (de) |
| DE (1) | DE102021213770A1 (de) |
| MX (1) | MX2024006460A (de) |
| PL (1) | PL4440762T3 (de) |
| WO (1) | WO2023099141A1 (de) |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3080625A (en) * | 1958-02-21 | 1963-03-12 | British Iron Steel Research | Continuous casting apparatus |
| BE657214A (de) * | 1963-12-26 | |||
| US3448789A (en) * | 1967-02-14 | 1969-06-10 | United States Steel Corp | Starter bar for continous metal casting apparatus |
| US3643731A (en) * | 1969-05-27 | 1972-02-22 | United States Steel Corp | Detachable joint between continuous-casting starter bar and casting |
| CH659016A5 (de) * | 1982-12-20 | 1986-12-31 | Concast Service Union Ag | Verfahren und einrichtung zum abdichten eines anfahrkopfes in einer stranggiesskokille. |
| DE3603190A1 (de) * | 1986-02-03 | 1987-08-06 | Schloemann Siemag Ag | Anfahrkopf fuer eine stahlbandgiessanlage |
| JPH0480639U (de) * | 1990-11-19 | 1992-07-14 | ||
| JP2639758B2 (ja) * | 1991-08-01 | 1997-08-13 | 新日本製鐵株式会社 | スラブ連続鋳造のスタート方法 |
| JPH05285610A (ja) * | 1992-04-14 | 1993-11-02 | Nippon Steel Corp | 連続鋳造スタート用のモールドシール装置及びその使用方法 |
| AT399834B (de) | 1993-02-12 | 1995-07-25 | Voest Alpine Ind Anlagen | Anfahrkopf für eine stranggiessanlage |
| ITMI991295A1 (it) | 1999-06-10 | 2000-12-10 | Danieli Off Mecc | Metodo per la sigillatura dell'insieme lingotteria - falsa barra in un impianto di colata continua e relativo elemento sigillante |
| DE202005001310U1 (de) | 2005-01-26 | 2005-04-14 | Hetsch, Walter | Verbundgußplatte |
| EP2127780B1 (de) | 2008-05-23 | 2012-12-05 | Concast Ag | Kaltstrangkopf-Abdichtsystem in einer Kokille einer Stranggiessanlage zum Giessen grossformatiger Vorprofile |
| KR20130088841A (ko) * | 2010-06-30 | 2013-08-08 | 지멘스 브이에이아이 메탈스 테크놀로지스 게엠베하 | 예비 프로파일을 주조하기 위한 연속 주조기용 초기 주조품, 더미 바 헤드 및 더미 바 |
| EP3797897A1 (de) * | 2019-09-26 | 2021-03-31 | Sarralle Equipos Siderurgicos, S.L. | Dichtungsvorrichtung für den kaltstrang einer stranggiessmaschine und zugehöriges montageverfahren |
| CN111299530B (zh) * | 2020-04-20 | 2024-07-30 | 中冶京诚工程技术有限公司 | 空心圆坯用的引锭头及连铸机 |
-
2021
- 2021-12-03 DE DE102021213770.9A patent/DE102021213770A1/de active Pending
-
2022
- 2022-11-10 PL PL22817883.6T patent/PL4440762T3/pl unknown
- 2022-11-10 MX MX2024006460A patent/MX2024006460A/es unknown
- 2022-11-10 US US18/709,019 patent/US20250001485A1/en active Pending
- 2022-11-10 CN CN202280077965.3A patent/CN118302262A/zh active Pending
- 2022-11-10 JP JP2024532807A patent/JP7764610B2/ja active Active
- 2022-11-10 WO PCT/EP2022/081394 patent/WO2023099141A1/de not_active Ceased
- 2022-11-10 EP EP22817883.6A patent/EP4440762B1/de active Active
- 2022-11-10 KR KR1020247015112A patent/KR20240089390A/ko active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR20240089390A (ko) | 2024-06-20 |
| MX2024006460A (es) | 2024-06-11 |
| CN118302262A (zh) | 2024-07-05 |
| DE102021213770A1 (de) | 2023-06-07 |
| JP2024545048A (ja) | 2024-12-05 |
| EP4440762B1 (de) | 2025-02-26 |
| US20250001485A1 (en) | 2025-01-02 |
| WO2023099141A1 (de) | 2023-06-08 |
| JP7764610B2 (ja) | 2025-11-05 |
| PL4440762T3 (pl) | 2025-05-26 |
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