EP2011591B1 - Vorrichtung zur Ausgabe von Schmelzmetall und Verfahren zur Herstellung einer derartigen Vorrichtung - Google Patents

Vorrichtung zur Ausgabe von Schmelzmetall und Verfahren zur Herstellung einer derartigen Vorrichtung Download PDF

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Publication number
EP2011591B1
EP2011591B1 EP08159059A EP08159059A EP2011591B1 EP 2011591 B1 EP2011591 B1 EP 2011591B1 EP 08159059 A EP08159059 A EP 08159059A EP 08159059 A EP08159059 A EP 08159059A EP 2011591 B1 EP2011591 B1 EP 2011591B1
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EP
European Patent Office
Prior art keywords
ceramic
mass
casting
plates
closing mechanism
Prior art date
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Active
Application number
EP08159059A
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English (en)
French (fr)
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EP2011591A2 (de
EP2011591A3 (de
Inventor
Erkki Helanto
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Indref Oy
Original Assignee
Indref Oy
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Publication of EP2011591A3 publication Critical patent/EP2011591A3/de
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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
    • 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
    • B22D41/28—Plates therefor
    • B22D41/30—Manufacturing or repairing thereof
    • 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
    • B22D41/40—Means for pressing the plates together

Definitions

  • the invention relates to a closing mechanism for a hole-bottomed container for dispensing molten metal and to a method of manufacturing such a closing mechanism.
  • the closing element for a funnel originating from the bottom of a molten-metal holding ladle used to comprise an upward and downward movable stopper rod, which was coupled with a lifting bar extending across the surface of molten metal.
  • the trouble here relates to guiding the stopper rod precisely to the taphole for closing the funnel after a molten metal pouring process.
  • the stopper rod became rapidly worn in use.
  • the slide gate is constituted by a horizontal plate, which is set against the bottom end of a vertical funnel and which is rotatable about a vertical axis, and which is provided with hole which can be aligned with the end of a funnel for opening the funnel, and which can be rotated aside from the alignment with a funnel for closing the funnel.
  • the plate establishing a slide gate is supported on a bulky frame responsible for transmitting a rotation to the plate. Such an assembly is difficult to build, awkward, and unreliable in operation.
  • publication EP 0 332 867 A1 discloses a closing mechanism connected to the bottom of a container, wherein a funnel for pouring molten metal out by way of a bottom hole is established by rotating a hole present in a circular rod to the concentricity with a hole extending through the rest of the closing assembly.
  • a closing mechanism connected to the bottom of a container, wherein a funnel for pouring molten metal out by way of a bottom hole is established by rotating a hole present in a circular rod to the concentricity with a hole extending through the rest of the closing assembly.
  • WO 2005/042190 A1 is a metal-structured apparatus assembled from sliding plates, wherein the middle plate of a plate stack consisting of three plates is capable of being slid with respect to the upper and lower stationary plates for closing and opening a spout extending through the plates.
  • the steel-fabricated plate stack has been assembled by means of a separate, erectable, bulky steel frame, which holds the entire package together. Such a structure is complicated and quite heavy, as well as bulky.
  • An object of the invention is to provide a closing mechanism adaptable to the holed bottom of a metal pouring ladle, which is devoid of drawbacks found in the foregoing closing elements, but which functions well also at high temperatures required by metal casting.
  • the solution according to the invention enables manufacturing an economically efficient closing mechanism and having said closing mechanism integrated for a single piece.
  • Advantages of the invention include simplicity, low manufacturing costs, and easy replacement of the assembly.
  • Fig. 1 illustrates a closing mechanism 1 in cross-section.
  • the closing mechanism 1 consists of three superimposed ceramic plates 2, 3 and 4, each provided with a hole 5.
  • the closing mechanism 1 is in a completely open condition when all three holes 5 are in alignment along a common axis 6.
  • Displacing the middle plate 3 relative to the upper and lower plates 2 and 4 into the interior of the closing mechanism, as indicated by an arrow 14, enables the hole 5 extending through the plates to be closed and the flowing of molten mass out of a hole-bottomed ladle to be stopped.
  • the plate package of three plates 2, 3 and 4 has been assembled together by casting it in a ceramic frame structure 7, which in this embodiment extends continuously around the plate package over five sides, with the exception of a downward pouring spout 8 which is aligned on the same axis 6 as the hole 5 of the fixedly mounted lower and upper plates, and with the exception of a top surface 9 of the upper plate 2 which comes to bear against the bottom of a ladle (not shown in the figure).
  • a ceramic frame structure 7 to be cast of ceramic mass is its metallic casting mold/outer housing 10, in which the plate package and refractory casting mass are placed in a manufacturing stage of the closing mechanism 1.
  • the closing mechanism 1 can be secured to the bottom of a ladle for example by bolts 11 and by brackets/washers 12 associated therewith.
  • the closing mechanism 1 has its middle plate 3 manipulated by means of a guide element 13 for opening and closing a pouring spout, as indicated by the arrow 14.
  • an air conduit 17 for enabling a displacement of the middle plate 3 from a vacant space 16, said air conduit extending through the ceramic frame structure 7 and the metallic casting mold 10.
  • This same conduit 17 can be used for the expulsion of a material used during a casting process, a so-called filler/blocker, which prevents the casting material from reaching certain areas (the middle plate operating range).
  • a filler is any material familiar in casting technology, such as for example urethane, beeswax or the like.
  • Another option for attaching the closing mechanism 1 to the bottom surface of a ladle is provided for example by clamp mechanisms, which are permanently fixed to the ladle's bottom surface and which can be released and secured for a simple replacement of the entire closing mechanism.
  • An essential feature of the invention is the simple closing mechanism 1, which is easy to replace as a single unit.
  • the ceramic casting 7 is molded on at least two sides of the plate stack.
  • the discussed sides of the plate stack would be those present in the viewing plane of the figure.
  • the process can be continued from here in a stepwise manner with different variations for enclosing the plate stack on all six sides within the casting, of course with the exception of spots essential from the standpoint of operation (the air conduit 16, the pouring spout 8, a supply hole in the upper part of the structure for delivering molten mass to the plate stack, and a recess necessary for manipulating the middle plate).
  • Fig. 2 illustrates a closing mechanism 1 of the invention in a second embodiment.
  • the ceramic plates 2, 3 and 4 can be further fitted along the sides thereof with ceramic, substantially vertical support blocks 15 for facilitating an assembling process of the plate package and a manufacturing process of the closing mechanism 1.
  • Neither of the illustrated embodiments requires separate springs for pressing the plates 2, 3 and 4 against each other as opposed to earlier solutions described in the prior art.
  • the ceramic plates 2, 3 and 4 can be at least partially secured to each other by any prior known method, such as a bonding agent or a mechanical coupling.
  • a closing mechanism 1 also enables designing embodiments, displaying one or more of the features described as follows:
  • the ceramic plates 2, 3 and 4 can be manufactured by firing or casting and are integrated for a single unit by casting the same in the refractory casting mass 7 with the assistance of the metallic outer housing 10.
  • the closing mechanism 1 according to the invention is particularly suitable for use in association with molten steel (temperature about 1500°C), but it naturally useful in association with any molten metal (molten zinc 370°C).
  • a limiting factor is the thermal resistance of ceramic plates, which is appr. 1600° in common commercial products used in association with steel casting processes. On the other hand, if plates are manufactured by using special ceramics, temperatures even higher than this can be reached.
  • a method of manufacturing the closing mechanism 1 comprises the following steps of:
  • the method may, if necessary, involve one or more of the following steps:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)

Claims (13)

  1. Schließmechanismus (1) zum Ausgeben von Schmelzmetall aus einer Bodenausgangspfanne, wobei der Schließmechanismus (1) drei zumindest teilweise übereinander gelagerte Keramikplatten (2, 3, 4) aufweist, wobei jede der Platten (2, 3, 4) mit einem Loch (5) bereitgestellt ist, dadurch gekennzeichnet, dass die drei Keramikplatten (2, 3, 4) in einer Keramikmasse (7) eingegossen sind, die zumindest auf zwei Seiten der Keramikplatten (2, 3, 4) vorhanden ist und die Keramikplatten (2, 3, 4), die Keramikmasse (7) und eine Metallhülle (10), die als Gussform verwendet wird, zusammen eine integrierte Einheit bilden.
  2. Schließmechanismus (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die Keramikmasse (7) wahlweise auf etwa 3-6 der sechs Seiten der Keramikplatten (2, 3, 4) vorhanden ist.
  3. Schließmechanismus (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die zu der Plattenebene der Keramikplatten (2, 3, 4) senkrechte Seite/senkrechten Seiten mit 1-4 Keramikstützblöcken (15) bereitgestellt ist/sind.
  4. Schließmechanismus (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass ein Gießloch (5) der Keramikplatten (2, 3, 4) zusätzlich eine Keramikbuchse (18) aufweist, die als seineVerlängerungmontiert ist.
  5. Schließmechanismus (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass wenn die Keramikgießmasse (7) eine Oberseite der obersten Keramikplatte (2) umfasst, zusätzlich in die Keramikmasse (7) ein Verbindungsblock und/oder ein Versiegelungsblock, der an dem Bodenloch einer Pfanne anliegt, eingegossenist.
  6. Verfahren zur Herstellung eines Schließmechanismus (1), das zum Ausgeben von Schmelzmetall verwendet wird, das die folgenden Schritte umfasst:
    - Herstellen von drei Keramikplatten (2, 3, 4), die jeweils mit einem Loch (5) zum Bilden eines Ausgießers bereitgestellt sind,
    - Positionieren der Platten (2, 3, 4) sodass eine Verschiebung der mittleren Platte (3) relativ zu der obersten und untersten Platte (2, 4) ermöglicht, den Ausgießer zu schließen oder zu öffnen,
    dadurch gekennzeichnet, dass
    - der Zugang einer Gießmasse (7) zu unerwünschten Bereichen durch Verstopfen oder Auffüllen dieser Bereiche vermieden wird,
    - die Keramikplatten (2, 3,4) in einem Außengehäuse (10) aus Metall angeordnet sind, das als Gussform wirkt,
    - das Außengehäuse (10) mit der feuerfesten Gießmasse (7) gefüllt wird, sodass etwas Gießmasse (7) auf zumindest zwei Seiten der Platten (2, 3, 4) vorhanden ist,
    - die feuerfeste Gießmasse (7) ausgehärtet wird und
    - das Verstopfungs-/Füllmedium entfernt wird.
  7. Verfahren gemäß Anspruch 6, dadurch gekennzeichnet, dass es des Weiteren einen Installationsvorgang von notwendigen Gießstützblöcken vor dem Füllen des Außengehäuses (10) mit der Gießmasse (7) umfasst.
  8. Verfahren gemäß Anspruch 6, dadurch gekennzeichnet, dass es des Weiteren einen Gießvorgang der Gießmasse (7) über 3-6 Seiten der Keramikplatten (2, 3, 4) umfasst.
  9. Verfahren gemäß Anspruch 8, dadurch gekennzeichnet, dass wenn die Gießmasse (8) eine obere Fläche der obersten Platte (2) bedeckt, zuvor ein Verbindungsblock und/oder einen Abdichtungsblockfür eine Bodenlochpfanne in die Gießmasse (7) eingeführt worden ist.
  10. Verfahren gemäß Anspruch 6, dadurch gekennzeichnet, dass der letzte Schritt das Heizen des Schließmechanismus (1) auf ungefähr 400°C zum Entwässern der Gießmasse (7) umfasst.
  11. Verfahren gemäß Anspruch 6, dadurch gekennzeichnet, dass ein Aushärtvorgang der feuerfesten Gießmasse (7) bei Raumtemperatur abhängig von der Art der verwendeten Masse in etwa einer Woche erfolgt.
  12. Verfahren gemäß Anspruch 6, dadurch gekennzeichnet, dass ein Aushärtvorgang der feuerfesten Gießmasse (7) durch Pressen erfolgt, wenn eine zum Trockenpressen geeignete Gießmasse verwendet wird.
  13. Verfahren gemäß Anspruch 6, dadurch gekennzeichnet, dass ein Loch (5) der untersten Keramikplatte (4) mit einer Keramikbuchse (18) als seineVerlängerungmontiert wird.
EP08159059A 2007-07-06 2008-06-26 Vorrichtung zur Ausgabe von Schmelzmetall und Verfahren zur Herstellung einer derartigen Vorrichtung Active EP2011591B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20070533A FI120385B (fi) 2007-07-06 2007-07-06 Sulkumekanismi sulan metallin annostelemiseksi ja menetelmä sulkumekanismin valmistamiseksi

Publications (3)

Publication Number Publication Date
EP2011591A2 EP2011591A2 (de) 2009-01-07
EP2011591A3 EP2011591A3 (de) 2009-02-11
EP2011591B1 true EP2011591B1 (de) 2012-02-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08159059A Active EP2011591B1 (de) 2007-07-06 2008-06-26 Vorrichtung zur Ausgabe von Schmelzmetall und Verfahren zur Herstellung einer derartigen Vorrichtung

Country Status (8)

Country Link
US (1) US20090008056A1 (de)
EP (1) EP2011591B1 (de)
JP (1) JP5440829B2 (de)
CN (1) CN101337272B (de)
AT (1) ATE543593T1 (de)
ES (1) ES2386059T3 (de)
FI (1) FI120385B (de)
RU (1) RU2467828C2 (de)

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FI122542B (fi) 2009-01-15 2012-03-15 Indref Oy Liukusuljinlevyn ja alasuutiilen yhdistelmä ja menetelmä liukusuljinlevyn ja alasuutiilen yhdistelmän korjaamiseksi
US9055621B2 (en) 2009-07-15 2015-06-09 Koninklijke Philips N.V. Activity adapted automation of lighting
CN106273176B (zh) * 2015-05-25 2018-07-17 天津市飞奥达风能设备有限公司 一种模料可粉碎的压铸模具
CN106270446B (zh) * 2015-05-25 2018-04-10 天津世创机械制造有限公司 一种可调节模料流速的压铸模具
KR101795468B1 (ko) * 2016-03-10 2017-11-10 주식회사 포스코 게이트 장치
CN107175326A (zh) * 2017-06-28 2017-09-19 秦皇岛首秦金属材料有限公司 一种钢包滑板结构
CN115026269A (zh) * 2022-05-18 2022-09-09 夏广翠 一种铝水浇铸浇包

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Also Published As

Publication number Publication date
JP5440829B2 (ja) 2014-03-12
FI20070533A (fi) 2009-01-07
ATE543593T1 (de) 2012-02-15
ES2386059T3 (es) 2012-08-08
CN101337272A (zh) 2009-01-07
JP2009012077A (ja) 2009-01-22
CN101337272B (zh) 2012-06-13
EP2011591A2 (de) 2009-01-07
US20090008056A1 (en) 2009-01-08
RU2467828C2 (ru) 2012-11-27
EP2011591A3 (de) 2009-02-11
FI20070533A0 (fi) 2007-07-06
RU2008126194A (ru) 2010-01-10
FI120385B (fi) 2009-10-15

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