US20090008056A1 - Apparatus for dispensing molten metal and method of manufacturing such an apparatus - Google Patents

Apparatus for dispensing molten metal and method of manufacturing such an apparatus Download PDF

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Publication number
US20090008056A1
US20090008056A1 US12/167,799 US16779908A US2009008056A1 US 20090008056 A1 US20090008056 A1 US 20090008056A1 US 16779908 A US16779908 A US 16779908A US 2009008056 A1 US2009008056 A1 US 2009008056A1
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US
United States
Prior art keywords
ceramic
mass
casting
plates
closing mechanism
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.)
Abandoned
Application number
US12/167,799
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English (en)
Inventor
Erkki Helanto
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.)
Indref Oy
Original Assignee
Indref Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Indref Oy filed Critical Indref Oy
Assigned to INDREF OY reassignment INDREF OY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HELANTO, ERKKI
Publication of US20090008056A1 publication Critical patent/US20090008056A1/en
Abandoned legal-status Critical Current

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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 has used an upward and downward movable stopper rod, which is 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 rapidly becomes 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 a 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 included in the prior art, 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 the drawbacks found in the foregoing closing elements, but which also functions well 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.
  • the solution relates to a closing mechanism for dispensing molten metal from a hole-bottomed ladle, the closing mechanism containing three at least partially superimposed ceramic plates, each of the plates being provided with a hole, the three ceramic plates being cast in a ceramic mass, the mass being present on at least two sides of the ceramic plates, and the ceramic plates, the ceramic mass, and a metal shell, used as a casting mold, establishing together an integrated unit.
  • Advantages of the invention include simplicity, low manufacturing costs, and easy replacement of the assembly.
  • FIG. 1 shows a closing mechanism in one embodiment of the invention
  • FIG. 2 shows a closing mechanism in a second embodiment of the invention.
  • 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 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).
  • Around the 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
  • 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/blocker 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 casting mass 7 can be applied on just two sides, namely on both long sides of the plate package,
  • the casting mass 7 can be applied not only on these two sides but also arbitrarily on one or more additional sides, including a top face and a bottom face of the plate package,
  • the pouring spout 8 of the closing mechanism 1 which leads out of the ceramic casting 7 and the metallic casting mold/outer housing 10 , can be fabricated also from a ceramic bushing 18 and preset in contact with the lower-most ceramic plate 4 , whereby the ceramic casting need not be necessarily extended all the way to the mouth of the pouring spout (the bushing 18 shown in the figure in dashed lines),
  • 1-4 pieces of support blocks 15 can be present in a position mounted arbitrarily on a vertical side perpendicular to the plate level of the plates.
  • 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:
  • assembling a plate package consisting of three finished plates 2 , 3 and 4 from precision-machined closing plates used in steel making industry, and optional upright support blocks, the assembling process being performed by using, if necessary, for example a bonding agent, a mechanical coupling or the like option,
  • the method may, if necessary, involve one or more of the following steps:
  • the pouring spout can have its inlet end between the closing mechanism and the ladle fitted beforehand with necessary connecting bodies/seals to be embedded at least partially within the casting,
  • the final stage of manufacturing is performed by raising the temperature from about 400° C., the casting mass 7 being vacated of possible water (the casting mass may also be originally water-free or it is possible to use for example masses which are good for dry pressing) and/or a so-called filling/plugging medium used in the mold.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)
US12/167,799 2007-07-06 2008-07-03 Apparatus for dispensing molten metal and method of manufacturing such an apparatus Abandoned US20090008056A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20070533 2007-07-06
FI20070533A FI120385B (fi) 2007-07-06 2007-07-06 Sulkumekanismi sulan metallin annostelemiseksi ja menetelmä sulkumekanismin valmistamiseksi

Publications (1)

Publication Number Publication Date
US20090008056A1 true US20090008056A1 (en) 2009-01-08

Family

ID=38331550

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/167,799 Abandoned US20090008056A1 (en) 2007-07-06 2008-07-03 Apparatus for dispensing molten metal and method of manufacturing such an apparatus

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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9055621B2 (en) 2009-07-15 2015-06-09 Koninklijke Philips N.V. Activity adapted automation of lighting
CN106270446A (zh) * 2015-05-25 2017-01-04 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
CN106273176A (zh) * 2015-05-25 2017-01-04 天津世创机械制造有限公司 一种模料可粉碎的压铸模具
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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122542B (fi) 2009-01-15 2012-03-15 Indref Oy Liukusuljinlevyn ja alasuutiilen yhdistelmä ja menetelmä liukusuljinlevyn ja alasuutiilen yhdistelmän korjaamiseksi
KR101795468B1 (ko) * 2016-03-10 2017-11-10 주식회사 포스코 게이트 장치
CN115026269A (zh) * 2022-05-18 2022-09-09 夏广翠 一种铝水浇铸浇包

Citations (5)

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US3662986A (en) * 1970-02-25 1972-05-16 Raymond J Domulewicz Sr Stopper block
US4358034A (en) * 1979-03-02 1982-11-09 Uss Engineers And Consultants, Inc. Sliding gate valve with orifice-encircling spring
US4597514A (en) * 1982-04-01 1986-07-01 Uss Engineers And Consultants, Inc. Sliding gate valves and components thereof
US5518154A (en) * 1994-11-17 1996-05-21 Usx Corporation Gate and pour tube assembly for use in throttling gate valve
US6783038B2 (en) * 2000-03-16 2004-08-31 Vesuvius Crucible Company Sliding gate for liquid metal flow control

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TW369448B (en) * 1997-07-16 1999-09-11 Stopinc Ag Sliding gate valve for a vessel containing molten metal
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JP3817109B2 (ja) * 2000-03-21 2006-08-30 新日本製鐵株式会社 鋳造用ノズルのシール材
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662986A (en) * 1970-02-25 1972-05-16 Raymond J Domulewicz Sr Stopper block
US4358034A (en) * 1979-03-02 1982-11-09 Uss Engineers And Consultants, Inc. Sliding gate valve with orifice-encircling spring
US4597514A (en) * 1982-04-01 1986-07-01 Uss Engineers And Consultants, Inc. Sliding gate valves and components thereof
US5518154A (en) * 1994-11-17 1996-05-21 Usx Corporation Gate and pour tube assembly for use in throttling gate valve
US6783038B2 (en) * 2000-03-16 2004-08-31 Vesuvius Crucible Company Sliding gate for liquid metal flow control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9055621B2 (en) 2009-07-15 2015-06-09 Koninklijke Philips N.V. Activity adapted automation of lighting
CN106270446A (zh) * 2015-05-25 2017-01-04 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
CN106273176A (zh) * 2015-05-25 2017-01-04 天津世创机械制造有限公司 一种模料可粉碎的压铸模具
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

Also Published As

Publication number Publication date
FI20070533A0 (fi) 2007-07-06
JP2009012077A (ja) 2009-01-22
RU2008126194A (ru) 2010-01-10
ES2386059T3 (es) 2012-08-08
ATE543593T1 (de) 2012-02-15
CN101337272B (zh) 2012-06-13
FI120385B (fi) 2009-10-15
EP2011591B1 (de) 2012-02-01
JP5440829B2 (ja) 2014-03-12
EP2011591A2 (de) 2009-01-07
RU2467828C2 (ru) 2012-11-27
FI20070533A (fi) 2009-01-07
EP2011591A3 (de) 2009-02-11
CN101337272A (zh) 2009-01-07

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AS Assignment

Owner name: INDREF OY, FINLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HELANTO, ERKKI;REEL/FRAME:021440/0330

Effective date: 20080801

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION