EP0254909B1 - Busette de coulée réfractaire - Google Patents

Busette de coulée réfractaire Download PDF

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Publication number
EP0254909B1
EP0254909B1 EP87109646A EP87109646A EP0254909B1 EP 0254909 B1 EP0254909 B1 EP 0254909B1 EP 87109646 A EP87109646 A EP 87109646A EP 87109646 A EP87109646 A EP 87109646A EP 0254909 B1 EP0254909 B1 EP 0254909B1
Authority
EP
European Patent Office
Prior art keywords
pouring spout
pouring
guide element
spout according
outflow
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.)
Expired
Application number
EP87109646A
Other languages
German (de)
English (en)
Other versions
EP0254909A1 (fr
Inventor
Hermann Dipl.-Ing. Lax
Karl-Ulrich Dipl.-Ing. Köhler
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.)
Thyssen Stahl AG
Original Assignee
Thyssen Stahl AG
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=6305111&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0254909(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thyssen Stahl AG filed Critical Thyssen Stahl AG
Priority to AT87109646T priority Critical patent/ATE41339T1/de
Priority to IN523/CAL/87A priority patent/IN165890B/en
Publication of EP0254909A1 publication Critical patent/EP0254909A1/fr
Application granted granted Critical
Publication of EP0254909B1 publication Critical patent/EP0254909B1/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
    • B22D11/10—Supplying or treating molten metal
    • 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
    • B22D41/50—Pouring-nozzles

Definitions

  • the invention relates to a fireproof pouring tube for the continuous casting of molten metals, in particular liquid steel into thin slabs in a mold which is preferably funnel-shaped in the middle in the upper region and has outflow openings opposite one another in front of a closed bottom in the tube wall and facing the narrow sides of the mold.
  • Such a known pouring tube (Stahleisen-Schriften, Issue 8, "The Continuous Casting of Steel", page 21) is more advantageous compared to a pouring tube that is open at the bottom because, as a result of the division and deflection of the pouring jet, turbulence harmful to the solidification develops the mold can be avoided. It is disadvantageous, however, that when the mold is filled, metal splashes up and cakes to the upper regions of the mold wall, as a result of which the formation of strand shells is prevented and breakthroughs can be caused. In addition, the distribution of the molten metal is not optimal. Too little molten metal gets into the upper areas, so that there is a temperature gradient towards these areas. This creates an uneven solidification front across the cross section of the strand to be cast.
  • molten metal can also be brought into areas of the mold that are further away from the pouring tube, but then there is an area in the immediate vicinity of the pouring tube in which molten metal is not directly from the pouring tube can reach.
  • the invention has for its object to provide a pouring tube of the type mentioned, in which there is no splashing and caking of metal splashes on the cooled mold wall at the start of pouring and in normal casting operation the molten metal over the cross section of the mold better than in known pouring tubes is distributed.
  • outflow openings each have a roof-shaped guide element starting from the tube wall and a tear-off edge formed by the bottom and / or the tube wall in the lower region.
  • the guide element Because of the guide element, it is prevented that molten metal splashes up to the upper areas of the cooled mold wall and fills there when it is filled. When the mold is filled, the guide element ensures that molten metal also reaches the upper areas on the narrow sides of the mold wall and that no zone of lower temperature is formed here. Because of the tear-off edge in the lower area, molten metal also gets directly into the area below the pouring tube, so that the result is that the molten metal is evenly distributed over the entire cross section of the mold.
  • each roof-shaped guide element on both sides of each outflow opening extends to the lower tear-off edge.
  • an embodiment is particularly advantageous in which the distance of the free edge of the lateral parts of the guide element from the tube wall from the upper region of the guide element to the tear-off edge provided in the lower region of the outflow opening becomes, in particular, continuously smaller.
  • each tear-off edge lies in a plane running perpendicular to the pipe axis.
  • the outflow openings should be arched in the upper area.
  • the guide element itself is preferably adapted to the shape of the associated outflow opening.
  • the uniform distribution of the molten metal can be further improved in that the clear width of each outflow opening increases from the upper region to the tear-off edge.
  • the tear-off edge should extend over the entire inside width of the pipe.
  • the part of the guide element lying above the outflow opening forms an acute angle with the part of the tube wall lying above it.
  • An angle that is greater than 70 ° has proven to be expedient.
  • the clear width of the outflow openings is at most equal to the distance between the broad side walls of the mold in its lower region, which determines the strand format.
  • the pouring tube in order to be able to introduce enough molten metal into the mold in the case of molds for wide thin slabs, the pouring tube, as is known per se, can have an oval cross section.
  • the outflow openings are provided on the wall areas with the smaller radius of curvature.
  • a pouring tube 2 with a conical head piece 2 ' is held in the bottom of a distribution vessel 1 for liquid metal.
  • the pouring tube 2 projects with its lower end into a mold 3 for casting thin slabs of the order of magnitude of preference wise 20-100 mm.
  • the mold 3 is formed by two opposite broad side walls 4 and two opposite narrow side walls 5.
  • the wide side walls 4 and the narrow side walls 5 are provided with cooling channels 6.
  • the broad side walls 4 form in the middle above a format-determining parallel section 7 an upwardly funnel-shaped pouring area 8 for receiving the lower end of the pouring tube 2.
  • the pouring tube 2 has an oval flow cross section and is closed at its lower end by a base plate 13. Immediately above the base plate 13 on the narrow sides of the tube wall, arched outlet openings 1 are provided on opposite sides.
  • the lower edge 11 'of the outflow opening 11, formed by the base plate 13, lies in a plane perpendicular to the axis of the pouring tube 2 and acts as a tear-off edge.
  • the maximum width b of the outflow opening 11 at the tear-off edge 11 ' is equal to or smaller than the clear distance d between the wide side walls 4 of the mold 3 in the format-determining parallel section 7.
  • the inside of the base plate 13 is arched into a vertex 14 in an arc shape towards the inside of the pouring tube 2. From the apex 14 of this bulge, guide surfaces 14 'fall in an arc towards the tear-off edges 11'.
  • a roof-shaped guide element 15 connects to the lateral edges and the upper edge of the outlet opening 11 shaped like an archway.
  • the free edges 15 "of the side parts 15 'of this roof-shaped guide element 15 are chamfered from the upper, most distant part 15" to the tear-off edge 11' in the lower region of the outflow opening 11.
  • the molten metal flowing into the pouring tube 2 is divided by the apex 14 and the guide surface 14 'of the bulge of the base plate 13 and exits through the outflow openings 11. Since the mold is not yet filled with the flow-damping molten metal in this phase, the guide element 15 prevents metal from splashing upwards and to the sides and caking on the cooled broad side walls 4 and narrow side walls 5.
  • the molten metal flowing out into the mold 3 solidifies on the wall of the mold 3 and connects to a start-up head 9 which closes the mold 3 from below. As soon as the rising mold level 10 exceeds the lateral openings 11, it is covered with mold powder.
  • each guide element 15 prevent molten metal from flowing directly against the nearby broad side walls 4 and, together with the upper, far preferred part 15 ", guide the flow of the molten metal into the upper regions near the narrow side walls 5.

Landscapes

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

Claims (13)

1. Busette de coulée pour la coulée continue de métaux en fusion, en particulier d'acier liquide, sous forme de brames minces dans une coquille de préférence de forme d'entonnoir dans le milieu dans la zone supérieure, avec des ouvertures d'écoulement opposées les unes aux autres latéralement dans la paroi de la busette avant un fond fermé et tournées vers les petites faces de la coquille, caractérisée par le fait que les ouvertures d'écoulement (11) présentent dans la zone supérieure un élément de guidage (15) en forme de toit partant de la paroi de la busette et, dans la zone intérieure une arête d'arrachement (11') formée par le fond (13) et/ou la paroi de la busette.
2. Busette de coulée selon la revendication 1, caractérisée par le fait que chaque élément de guidage (15) en forme de toit présente des portions latérales (15') sur les côtés de chaque ouverture d'écoulement jusqu'à leur arête d'arrachement (11').
3. Busette de coulée selon la revendication 2, caractérisée par le fait que la distance entre les bords libres (11") des portions latérales (15') de l'élément de guidage (15) et la paroi de la busette diminue depuis la zone supérieure de l'élément de guidage (15) vers l'arête d'arrachement (11') prévue dans la zone inférieure.
4. Busette de coulée selon l'une des revendications 1 à 3, caractérisée par le fait que chaque arête d'arrachement (11') se trouve dans un plan s'étendat orthogonalement à l'axe de la busette.
5. Busette de coulée selon l'une des revendications 1 à 4, caractérisée par le fait que les ouvertures d'écoulement (11) sont conformées en arc de porte dans la zone supérieure.
6. Busette de coulée selon l'une des revendications 1 à 5, caractérisée par le fait que l'élément de guidage (15) est ajusté à la forme de l'ouverture d'écoulement (11) adjointe.
7. Busette de coulée selon l'une des revendications 1 à 6, caractérisée par le fait que le diamètre intérieur de chaque ouverture d'écoulement (11) augmente depuis la zone supérieure vers l'arête d'arrachement (11').
8. Busette de coulée selon l'une des revendications 1 à 7, caractérisée par le fait que l'arête d'arrachement (11') s'étend sur la totalité du diamètre intérieur de la busette.
9. Busette de coulée selon l'une des revendications 1 à 8, caractérisée par le fait que la partie de l'élément de guidage (15) se trouvant au-dessus de l'ouverture d'écoulement (11) contient avec la partie de la paroi de la busette se trouvant au-dessus un angle aigu.
10. Busette de coulée selon la revendication 9, caractérisée par le fait que l'angle (90°-a) est supérieur à 70°.
11. Busette de coulée selon l'une des revendications 1 à 10, caractérisée par le fait que le fond (13) est voûté dans le milieu en direction de l'intérieur de la busette en formant des surfaces de guidage (14') tombant vers les ouvertures d'écoulement (11).
12. Busette de coulée selon l'une des revendications 1 à 11, caractérisée par le fait que le diamètre intérieur (b) de l'ouverture d'écoulement (11) est au plus égal à la distance (d) entre les parois des grands côtés (4) de la coquille dans sa partie inférieure (7) déterminant le format de coulée.
13. Busette de coulée selon l'une des revendications 1 à 12, caractérisée par le fait que la busette de coulée (2) a une section transversale ovale dans les régions de paroi latérale ayant le plus faible rayon de courbure de laquelle sont prévues les ouvertures d'écoulement (11).
EP87109646A 1986-07-12 1987-07-04 Busette de coulée réfractaire Expired EP0254909B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT87109646T ATE41339T1 (de) 1986-07-12 1987-07-04 Feuerfestes giessrohr.
IN523/CAL/87A IN165890B (fr) 1986-07-12 1987-07-08

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863623660 DE3623660A1 (de) 1986-07-12 1986-07-12 Feuerfestes giessrohr
DE3623660 1986-07-12

Publications (2)

Publication Number Publication Date
EP0254909A1 EP0254909A1 (fr) 1988-02-03
EP0254909B1 true EP0254909B1 (fr) 1989-03-15

Family

ID=6305111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109646A Expired EP0254909B1 (fr) 1986-07-12 1987-07-04 Busette de coulée réfractaire

Country Status (10)

Country Link
US (1) US4819840A (fr)
EP (1) EP0254909B1 (fr)
JP (1) JPS6372454A (fr)
KR (1) KR880001352A (fr)
CN (1) CN87104752A (fr)
BR (1) BR8703549A (fr)
DE (2) DE3623660A1 (fr)
ES (1) ES2007301B3 (fr)
GR (1) GR3000021T3 (fr)
ZA (1) ZA875017B (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63303679A (ja) * 1987-06-05 1988-12-12 Toshiba Ceramics Co Ltd 鋳造用浸漬ノズル
DE3811751A1 (de) * 1988-04-08 1989-10-19 Schloemann Siemag Ag Tauchgiessrohr zum einleiten von metallschmelze in eine metallbandgiesskokille
DE3918228C2 (de) * 1989-06-03 1996-11-07 Schloemann Siemag Ag Tauchgießrohr zum Einleiten von Stahlschmelze in eine Stranggießkokille
US5205343A (en) * 1989-06-03 1993-04-27 Sms Schloemann-Siemag Aktiengesellschaft Pouring tube for feeding molten steel into a continuous casting mold
DE4032624A1 (de) * 1990-10-15 1992-04-16 Schloemann Siemag Ag Tauchgiessrohr zum einleiten von stahlschmelze in eine stranggiesskokille
US5944261A (en) * 1994-04-25 1999-08-31 Vesuvius Crucible Company Casting nozzle with multi-stage flow division
US5785880A (en) * 1994-03-31 1998-07-28 Vesuvius Usa Submerged entry nozzle
IT1267242B1 (it) * 1994-05-30 1997-01-28 Danieli Off Mecc Scaricatore per bramme sottili
US5879721A (en) * 1996-08-28 1999-03-09 Ebaa Iron, Inc. Movable pouring basin
UA51734C2 (uk) * 1996-10-03 2002-12-16 Візувіус Крусібл Компані Занурений стакан для пропускання рідкого металу і спосіб пропускання рідкого металу через нього
DE19802809A1 (de) * 1998-01-27 1999-07-29 Km Europa Metal Ag Flüssigkeitsgekühlte Kokille
KR100488988B1 (ko) * 2000-06-21 2005-05-11 주식회사 포스코 침지노즐
CZ20031269A3 (cs) * 2000-10-27 2004-01-14 The Ohio State University Způsob a zařízení k řízení stojatých povrchových vln a turbulence v nádobě na plynulé lití
US6543656B1 (en) 2000-10-27 2003-04-08 The Ohio State University Method and apparatus for controlling standing surface wave and turbulence in continuous casting vessel
US7090918B2 (en) * 2001-01-11 2006-08-15 Vesuvius Crucible Company Externally glazed article
US6932250B2 (en) * 2003-02-14 2005-08-23 Isg Technologies Inc. Submerged entry nozzle and method for maintaining a quiet casting mold
DE50301315D1 (de) * 2003-08-01 2006-02-16 Hof Te Fiennes N V Giesssystem und Verfahren zum Vergiessen von NE-Metallschmelzen
WO2005070589A1 (fr) * 2004-01-23 2005-08-04 Sumitomo Metal Industries, Ltd Busette immergee pour la coulee continue et procede de coulee continue utilisant cette busette immergee
US8225845B2 (en) 2009-12-04 2012-07-24 Nucor Corporation Casting delivery nozzle
EP2444177A1 (fr) * 2010-10-20 2012-04-25 Vesuvius Group S.A Tube pour l'écoulement de métal liquide
JP5578112B2 (ja) * 2011-03-02 2014-08-27 新日鐵住金株式会社 誘導加熱装置の冷却方法
CN104325126A (zh) * 2014-10-13 2015-02-04 上海大学 板坯连铸过程控制金属流体流动的浸入式水口
CN111974981B (zh) 2019-05-23 2023-08-29 维苏威集团有限公司 浇铸水口

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Publication number Priority date Publication date Assignee Title
BE692176A (fr) * 1966-03-15 1967-06-16
CH445034A (de) * 1966-10-18 1967-10-15 Metacon Ag Ausgussvorrichtung
DE1817067B1 (de) * 1968-12-21 1971-04-29 Mannesmann Ag Einrichtung zum abscheiden von verunreinigungen aus fluessi gem stahl waehrend des stranggiessens und ein verfahren dazu
DE1939170B2 (de) * 1969-07-29 1971-04-22 Mannesmann Ag Einrichtung zum verteilen einer schmelze in einer anlage zum stranggiessen von stahl
DE1959097C2 (de) * 1969-11-20 1973-10-04 Mannesmann Ag, 4000 Duesseldorf Vorrichtung beim Stranggießen zum Ver teilen eiern Stahlschmelze
BE790371A (fr) * 1971-10-21 1973-02-15 Voest Ag Tube de coulee refractaire pour le coulage en continu de metauxen fusion
CH557707A (de) * 1973-05-07 1975-01-15 Concast Ag Vorrichtung zum einbringen einer stahlschmelze in den giesskopf einer stranggiesskokille.
DE2342820B1 (de) * 1973-08-24 1974-08-15 Kloeckner Werke Ag Tauchausguss fuer eine Stranggiesskokille
US4487251A (en) * 1982-03-08 1984-12-11 Vesuvius Crucible Company Continuous casting apparatus and a method of using the same
JPS6123558A (ja) * 1984-06-28 1986-02-01 Nippon Kokan Kk <Nkk> 連続鋳造用浸漬ノズル
IT1177924B (it) * 1984-07-24 1987-08-26 Centro Speriment Metallurg Perfezionamento negli scaricatori di colata continua
US4662546A (en) * 1985-07-30 1987-05-05 Allegheny Ludlum Corporation Submerged nozzle for use in the continuous casting of slabs

Also Published As

Publication number Publication date
JPS6372454A (ja) 1988-04-02
ES2007301B3 (es) 1990-08-16
US4819840A (en) 1989-04-11
DE3623660A1 (de) 1988-01-14
ZA875017B (en) 1988-01-13
CN87104752A (zh) 1988-03-02
KR880001352A (ko) 1988-04-22
BR8703549A (pt) 1988-03-22
DE3760064D1 (en) 1989-04-20
GR3000021T3 (en) 1989-10-31
EP0254909A1 (fr) 1988-02-03

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