EP0080997A1 - Dispositif pour la coulée continue de métaux - Google Patents

Dispositif pour la coulée continue de métaux Download PDF

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Publication number
EP0080997A1
EP0080997A1 EP82890174A EP82890174A EP0080997A1 EP 0080997 A1 EP0080997 A1 EP 0080997A1 EP 82890174 A EP82890174 A EP 82890174A EP 82890174 A EP82890174 A EP 82890174A EP 0080997 A1 EP0080997 A1 EP 0080997A1
Authority
EP
European Patent Office
Prior art keywords
slide plate
region
nozzles
outflow
openings
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
Application number
EP82890174A
Other languages
German (de)
English (en)
Other versions
EP0080997B1 (fr
Inventor
Manfred Dipl.-Ing. Haissig
Josef Lothmann
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.)
Haissig Manfred Dipl-Ing
Zimmermann and Jansen GmbH
Original Assignee
Vereinigte Edelstahlwerke AG
Zimmermann and Jansen GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3572069&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0080997(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Vereinigte Edelstahlwerke AG, Zimmermann and Jansen GmbH filed Critical Vereinigte Edelstahlwerke AG
Publication of EP0080997A1 publication Critical patent/EP0080997A1/fr
Application granted granted Critical
Publication of EP0080997B1 publication Critical patent/EP0080997B1/fr
Expired 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
    • 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
    • B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
    • B22D11/047—Means for joining tundish to mould
    • 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
    • B22D41/42—Features relating to gas injection

Definitions

  • the present invention relates to a device for the horizontal continuous casting of metals, in particular steels.
  • Devices of this type usually comprise a container holding the molten metal, which has in the lower region of its wall an outflow nozzle through which the metal flows into a substantially horizontally arranged mold, from which the metal strand is generally drawn off by mechanical means.
  • An outflow channel is used to transfer the liquid metal from the container into the mold, e.g. in the form of a mouthpiece made in one piece with the container and made of refractory material which extends into the mold.
  • a container for the molten metal is connected via a vertical outflow opening to a horizontally arranged pouring channel with a subsequent horizontal mold.
  • the heatable pouring channel lying below the outflow opening has an opening on the side facing away from the casting mold and is for receiving a horizontally displaceable, guided through this opening, the vertical outflow opening of the melt container and the pouring channel in the desired manner releasing or closing closure Plug trained.
  • the closure When the closure is open, the molten metal flows vertically out of the melt container and, with a sharp change in direction, flows into the horizontally arranged pouring channel and the subsequent continuous casting mold.
  • the sealing plug which is adapted to the inner shape of the pouring channel, is inserted horizontally into the pouring channel and closes the opening between the melt container and the pouring channel and the pouring channel itself.
  • shut-off element designed as a slide and having a horizontal slide plate as a closure element and also arranged in the vertical outflow channel.
  • a porous part corresponding essentially to the dimension of the discharge nozzle between the melt container and the mold is arranged, which is aligned with the discharge nozzle when the slide plate is in the closed position and through which , fed via a line, a gas can be supplied.
  • the gas is finely distributed in the porous part of the slide plate, keeps the molten metal in motion in the form of rising bubbles and prevents it from penetrating into easily addable areas and parts of the slider. If the molten metal is hot and fluid enough, an inert gas, such as argon, is supplied, which ensures the desired displacement of the metal from sensitive areas of the slide.
  • the supply is switched over to the supply of oxygen or oxygen-containing gas, as a result of which the metal is heated as a result of the oxidation of a small proportion of the metal in this area and solidifies there is avoided by parts of the metal in the area of the movable slide plate.
  • the supply of the gases does not cause any problems since, due to the horizontal arrangement of the slide plate and the surface of its porous gas supply part, the ferrostatic pressure of the metal located above the slide in the container is the same in all parts of the cross section of the outflow nozzle.
  • the invention has for its object to provide a device for horizontal continuous casting, which comprises a closure member for interrupting the flow of cast metal, which is formed by a substantially vertically arranged slide, and in which to avoid interference in the region of the closure member Means for supplying inert or oxygen (containing) gas is provided.
  • the invention relates to a device for the continuous casting of metals, in particular steels, which has a container for the molten metal to be cast, at least one outflow channel in the region of the bottom of the container in connection with at least one horizontal continuous casting mold and at least one arranged in the channel
  • Closure member comprises, and is characterized in that on the slide plate of an essentially horizontally guided outflow channel inclined, preferably substantially vertically, arranged slide on its side facing the melt container, in the region of the edge zone of the closed position of the slide plate with the metal to be cast in contact with the surface area and / or in the area of the opening, preferably the bore, the head plate of the slide, at least one opening or nozzle for supplying a gaseous medium, preferably oxygen and / or argon, with an essentially tangential outflow device is arranged.
  • a plurality of such openings or nozzles having such a tangential outflow direction are advantageously arranged at the specified positions of the slide plate and the top plate.
  • These gas feeds can also be formed by capillaries, channels, nozzle openings or the like.
  • tangential means that the gases on the one hand leave the respective surface of one of the parts of the closure element mentioned tangentially or at a flat or acute angle and on the other hand that their outflow direction is essentially parallel to the corresponding part of the boundary line of the area to be flushed by the gas runs.
  • the outflow direction although essentially tangential, can advantageously be directed outwards, i.e. against the periphery of the arrangement.
  • edge zone of the surface area of the slide plate which is in contact with the molten metal to its, preferably circular, edge boundary having a substantially parallel and preferably tangential direction and the surface of the slide plate in a pointed, preferably 3 to 45-degree, in particular 10 to 30-degree, angular penetrating openings or nozzles are arranged.
  • this wall essentially tangentially penetrating openings or nozzles with obliquely directed towards the surface of the slide plate, preferably an angle of 3 to 75 0 , in particular from 10 to 60 0 , including outflow direction are arranged.
  • the penetration of melt between the displaceable and firmly arranged parts of the closure member and the solidification of metal at these points are reliably switched off, even if the melt should have cooled too much.
  • all openings or nozzles on the top plate and / or slide plate have the same direction of outflow. This creates a kind of spiral circular movement of the melt with a tendency from the area the slide away.
  • the openings or nozzles of the slide plate can all have the same direction of outflow and the openings or nozzles in the top plate can also each have the same direction, but the flow direction of the gases on the slide plate is opposite.
  • Another variant provides that adjacent openings or nozzles on the top plate and / or slide plate have mutually facing outflow directions.
  • An embodiment has proven to be favorable for the uniformity of the gas supply over the cross section to be purged and thus the metal movement in the entire area of the slide, which consists in that in the lower area, preferably in the lower half, of the surface area in contact with the molten metal Slider plate and / or in the lower region of the opening in the head plate are preferably arranged by 10 to 100% more openings or nozzles than in the upper region, preferably in the upper half, of the opening and / or of the surface region.
  • An embodiment has proven to be advantageous in which the openings or nozzles with the tangential outflow direction are arranged only in the edge zone of the lower region.
  • the porous stopper can be arranged in an opening, preferably a bore, penetrating the slide plate or in a recess of the slide plate facing the molten metal.
  • An embodiment variant is preferred in which a preferably cylindrically shaped recess extending into the region of the edge zone is arranged on the slide plate in its surface area in contact with the molten metal in the closed position, the boundary wall of openings or nozzles for supplying gaseous media is penetrated with an essentially tangential and preferably directed against the molten metal outflow direction.
  • the container 1 shown only partially in FIG. 1 for the molten metal la to be cast has in its lower region a substantially horizontal outlet channel 2 connecting this container 1 to the horizontal, also only partially shown, continuous casting mold 4.
  • a pressure cylinder plate slide 3 of which the top plate 10 and the divided slide plate 20 are shown enlarged.
  • the fixed head plate 10, which is made of highly refractory material, is arranged facing the melt container and has a flow opening 11, the wall 12 of which is penetrated by the gas supply nozzles 13 having a tangential outflow direction. Relatively more nozzles 13 were arranged in the lower region 11b of the opening 11 than in the upper region 11a. The gas emerging from these nozzles 13 continuously displaces the melt from the area of the slide plate 20.
  • the sliding also made of refractory material, divided in the embodiment shown formed slide plate 20 is disposed, one part of which has a flow opening 20a at the opening position of the slider 3 with the con - dung channel 2 or the Outflow nozzle and with the bore 11.
  • the head plate 10 is aligned.
  • the tangentially opening nozzles 23 are arranged in its peripheral or edge zone area, via an annular channel 28 are supplied with the pressurized flushing or oxidizing gas.
  • the Tangentially flowing gas keeps the melt in the area of the slide plate 20 in motion and continuously displaces it from the area.
  • FIG. 2 of a part of the slide plate 20 shows the region 22 which is delimited by a broken circular line 22b and which is in contact with the molten metal la when the slide plate 20 is in the closed position or from its corresponding part.
  • the outflow openings of the nozzle 23 for the tangential supply of the gases are arranged in the edge zone 22a of this region 22.
  • more tangential nozzles are arranged in the lower region 22c than in the upper region 22d. This results in a particularly good compensation for the differences in the ferrostatic pressure occurring over the cross section of the horizontal outflow channel 2 (FIG. 1) and thus a uniform flushing of the sensitive area of the slide.
  • a porous plug 25 (shown in dash-dot lines) seated in a recess of the slide plate 20 can be provided, from the center of the area 22 and surrounded by the nozzle openings 23, from which, also fed by Broken lines indicated supply line 27, the gases are introduced flat and very finely divided into the molten metal la.
  • the porous stopper 25 is likewise arranged in the upper partial region 22d of the slide 20, but there are no gas supply nozzles with an essentially tangential outflow direction arranged in this upper part; the porous stopper 25, for example made of zirconium oxide, takes on their task.
  • the gas supply nozzles 23, which are essential to the invention and have a tangential outflow direction, are arranged in the lower region 22c, so that even in this embodiment variant, a uniform flushing of the overall cross section is ensured despite the vertical arrangement of the slide plate.
  • FIG 5 shows the section 22 of the slide plate 20 of another preferred embodiment of the device according to the invention which is in contact with the melt 1 a in the closed position.
  • the gaseous medium is supplied via the ring channel 28 and the nozzles 23 penetrating tangentially through the cylindrical boundary wall 24a of the recess 24 in the slide plate 20.
  • the boundary wall 24a of the recess 24 is located in the region of the edge zone 22a of the region 22 which is in contact with the molten metal la when the slide plate 20 is in the closed position, so that the effect of purging the sensitive zones of the slide with gas, which is the aim of the invention, is also achieved in this embodiment becomes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Continuous Casting (AREA)
EP82890174A 1981-11-27 1982-11-23 Dispositif pour la coulée continue de métaux Expired EP0080997B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT5112/81 1981-11-27
AT511281A ATA511281A (de) 1981-11-27 1981-11-27 Vorrichtung zum stranggiessen von metallen

Publications (2)

Publication Number Publication Date
EP0080997A1 true EP0080997A1 (fr) 1983-06-08
EP0080997B1 EP0080997B1 (fr) 1985-11-27

Family

ID=3572069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82890174A Expired EP0080997B1 (fr) 1981-11-27 1982-11-23 Dispositif pour la coulée continue de métaux

Country Status (4)

Country Link
EP (1) EP0080997B1 (fr)
JP (1) JPS5893543A (fr)
AT (1) ATA511281A (fr)
DE (1) DE3267714D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT383529B (de) * 1985-10-24 1987-07-10 Voest Alpine Ag Einrichtung zum vergiessen von schmelzen
EP0563376A4 (fr) * 1989-06-01 1993-01-09 Shinagawa Refractories Co Brique a nez ou brique de repartition pour le soufflage de gaz dans du metal en fusion.
US5613545A (en) * 1991-11-12 1997-03-25 Shinagawa Refractories Co. Ltd. Inert gas injecting plate brick or insert nozzle brick for use in a sliding gate valve apparatus of molten metal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118385557B (zh) * 2024-06-05 2025-05-02 靖江市科尼机械配件有限公司 一种防漏型倾斜浇铸装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1181408A (fr) * 1956-03-22 1959-06-16 Perfectionnements apportés au moulage continu de matières fondues
DE1935401C2 (de) * 1968-07-12 1973-12-20 Interstop Ag, Zug (Schweiz) Schiebeverschluß für mit einer Bodenausgußöffnung versehene Gießpfannen oder dergleichen Behälter zum Gießen von flüssigen Metallen, insbesondere Stahl
US3809146A (en) * 1972-02-18 1974-05-07 Steel Corp Method of opening an intermediate vessel nozzle for continuous casting
DE2836409A1 (de) * 1978-08-19 1980-02-21 Stopinc Ag Schieberverschluss

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU56046A1 (fr) 1968-05-09 1970-01-14
DE2462292C3 (de) 1973-03-01 1984-09-20 USS Engineers and Consultants, Inc., Pittsburgh, Pa. Schieberverschluß am Bodenauslaß eines Gießgefäßes
GB1598764A (en) 1977-03-18 1981-09-23 Sumitomo Metal Ind Method and apparatus for continuous casting of steel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1181408A (fr) * 1956-03-22 1959-06-16 Perfectionnements apportés au moulage continu de matières fondues
DE1935401C2 (de) * 1968-07-12 1973-12-20 Interstop Ag, Zug (Schweiz) Schiebeverschluß für mit einer Bodenausgußöffnung versehene Gießpfannen oder dergleichen Behälter zum Gießen von flüssigen Metallen, insbesondere Stahl
US3809146A (en) * 1972-02-18 1974-05-07 Steel Corp Method of opening an intermediate vessel nozzle for continuous casting
DE2836409A1 (de) * 1978-08-19 1980-02-21 Stopinc Ag Schieberverschluss

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT383529B (de) * 1985-10-24 1987-07-10 Voest Alpine Ag Einrichtung zum vergiessen von schmelzen
EP0563376A4 (fr) * 1989-06-01 1993-01-09 Shinagawa Refractories Co Brique a nez ou brique de repartition pour le soufflage de gaz dans du metal en fusion.
US5613545A (en) * 1991-11-12 1997-03-25 Shinagawa Refractories Co. Ltd. Inert gas injecting plate brick or insert nozzle brick for use in a sliding gate valve apparatus of molten metal

Also Published As

Publication number Publication date
JPS5893543A (ja) 1983-06-03
EP0080997B1 (fr) 1985-11-27
DE3267714D1 (en) 1986-01-09
ATA511281A (de) 1987-03-15

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