EP0765702A1 - Eintauchausguss zum Einbringen von Metallschmelze in einer Stranggusskokille - Google Patents

Eintauchausguss zum Einbringen von Metallschmelze in einer Stranggusskokille Download PDF

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Publication number
EP0765702A1
EP0765702A1 EP96401849A EP96401849A EP0765702A1 EP 0765702 A1 EP0765702 A1 EP 0765702A1 EP 96401849 A EP96401849 A EP 96401849A EP 96401849 A EP96401849 A EP 96401849A EP 0765702 A1 EP0765702 A1 EP 0765702A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
metal
obstacle
liquid metal
perforations
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
EP96401849A
Other languages
English (en)
French (fr)
Other versions
EP0765702B1 (de
Inventor
Jean Michel Damasse
Laurent Gacher
Luc Vendeville
Gérard Raisson
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
USINOR SA
Original Assignee
Thyssen Stahl AG
USINOR Sacilor SA
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 Thyssen Stahl AG, USINOR Sacilor SA filed Critical Thyssen Stahl AG
Publication of EP0765702A1 publication Critical patent/EP0765702A1/de
Application granted granted Critical
Publication of EP0765702B1 publication Critical patent/EP0765702B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/064—Accessories therefor for supplying molten metal
    • B22D11/0642—Nozzles
    • 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
    • B22D41/502—Connection arrangements; Sealing means therefor

Definitions

  • the invention relates to the continuous casting of metals, in particular steel. More specifically, it relates to the tubes of refractory material called "nozzles" which, usually, are connected by their upper end to the container serving as a reservoir of liquid metal, and whose lower end plunges into the bath of liquid metal contained in the mold. where the solidification of the metal product should begin.
  • nozzles tubes of refractory material which, usually, are connected by their upper end to the container serving as a reservoir of liquid metal, and whose lower end plunges into the bath of liquid metal contained in the mold. where the solidification of the metal product should begin.
  • the primary role of these nozzles is to protect the jet of liquid metal on its path between the container and the ingot mold from atmospheric oxidation. They also make it possible, thanks to appropriate configurations of their lower end, to favorably orient the flows of liquid metal in the ingot mold so that the solidification of the product takes place under the best possible conditions.
  • the casting can take place in an ingot mold which must give the product a very elongated rectangular section, which usually designates it by the expression "flat product”.
  • This is the case when, in the steel industry, steel is poured in the form of slabs, that is to say products having approximately 1 to 2 m in width and a thickness generally of the order of 20 cm, but which can descend up to a few cm on some recent installations called “thin slab casting machines”.
  • the ingot mold is composed of fixed walls which are energetically cooled on their face which is not in contact with the metal.
  • molds are used, the casting space of which is delimited on its long sides by a pair of internally cooled cylinders with parallel horizontal axes and rotating around these axes in opposite directions, and on its short sides by plates of closure (called side faces) of refractory material applied against the ends of the cylinders.
  • the cylinders can also be replaced by cooled endless belts.
  • the first part is composed of a cylindrical tube, the upper end of which is connected to an orifice in the bottom of the distributor which constitutes the reserve of liquid steel supplying the ingot mold, an orifice which can be closed at will by the operator, partially or totally, thanks to a stopper or a drawer system ensuring the regulation of the metal flow.
  • the cross-section of this orifice depends on the maximum metal flow which can flow inside the nozzle.
  • the second part fixed to the lower end of the preceding tube, for example by screwing, is intended to be immersed in the bath of liquid metal present in the ingot mold.
  • this hollow element is composed of a hollow element inside which opens the lower orifice of the preceding cylindrical tube.
  • the interior space of this hollow element has a generally elongated shape in its terminal part and is oriented substantially perpendicular to the tube.
  • the hollow element is placed parallel to the long sides of the ingot mold, and the liquid metal flows into the ingot mold through two orifices made at each end of the elongated end portion of the hollow element, and called "gills".
  • the object of the invention is to provide metallurgists with nozzles which ensure conditions for the flow of metal in the ingot mold quieter and more regular than the nozzles usually used during the continuous casting of metallurgical products.
  • the subject of the invention is a nozzle for the introduction of a liquid metal into a mold for the continuous casting of metals, of the type comprising a first tubular part, one end of which is intended to be connected to a container containing said liquid metal, and the other end of which opens into a second hollow part, at least a portion of the interior space of which is oriented substantially perpendicular to said first tubular part, said portion comprising at each of its ends at least one orifice intended to open into the casting space of said ingot mold, characterized in that it comprises an obstacle placed on the path of the liquid metal inside said first tubular part or in its extension, said obstacle being constituted by at least one perforated part intended to deflect the metal from its preferential path inside the nozzle.
  • said obstacle consists of at least one pellet perforated by a multiplicity of holes.
  • said obstacle consists of a hollow part, provided with a bottom, penetrating into the interior space of said second part of the nozzle, said hollow part comprising openings on its side wall.
  • the interior space of the entire nozzle has the general shape of a T.
  • the invention consists in interposing on the path of the liquid metal an obstacle intended to impede its natural flow, by abruptly deviating this flow from its theoretical preferential trajectory and by locally reducing the section of the space available for the passage of metal.
  • This has the effect, at an equal metal flow rate, of limiting the speed of the flow and of improving the filling of the interior space of the nozzle as a whole.
  • the erratic variations in the conditions of the flow of the metal out of the nozzle are thus attenuated, and the symmetry of the flows in the right and left halves of the mold and the regularity over time of these flows are notably improved.
  • the nozzle 1 is formed, as in the previously cited prior art, of two main parts made of a refractory material such as alumina graphite, which are assembled here to each other by screwing the first into the second.
  • the first part comprises a cylindrical or substantially cylindrical tube 2, the interior space 3 of which constitutes the path for the passage of liquid metal.
  • This tube 2 is normally intended to be held vertically.
  • Its upper part, not shown, is intended to be connected to a container serving as a liquid metal reservoir, such as a continuous casting distributor, at the level of an orifice through which the liquid metal can flow with a flow rate that the operator adjusts by means of a stopper or a drawer device.
  • the lower end 4 of the tube 2 has a thread 5 on its outer wall, and this thread 5 makes it possible to assemble it to the second part of the nozzle 1.
  • This second part is composed of a hollow element 6 which, in the The example described and shown, has the external shape of an inverted T.
  • the interior space 7 of the hollow element 6, also in the shape of an inverted T thus comprises a cylindrical portion 8 extending the interior space 3 of the tube 2.
  • the upper region of this cylindrical portion 8 comprises a flare 9 whose wall is threaded, so as to be able to screw the lower end 4 of the tube 2.
  • the cylindrical portion 8 opens into a tubular portion 10 which is substantially perpendicular to it, of approximately circular, oval or rectangular section.
  • each end of this tubular portion 29 has an orifice 11, 11 ′ called “hearing”, through which the liquid metal can flow out of the nozzle.
  • these vents 10, 11 are intended to be kept permanently under the surface of the liquid metal filling the casting space.
  • the cylindrical portion 8 of the interior space 7 of the hollow element 6 comprises, inside the flare 9 and under the thread of its wall, a housing 12, in which, prior to the 'assembly of the two parts 2, 6 of the nozzle 1, one can place a stack of three pellets of refractory material: an upper pad 13, an intermediate pad 14 and a bottom pad 15.
  • the respective dimensions of the housing 12 and the pads 13 , 14, 15 are chosen so that, after assembly of the nozzle 1, the lower end of the tube 2 abuts against the upper pad 13.
  • the upper pad 13 has a certain number of perforations 16, distributed over the portion of its surface intended to be located directly above the interior space 3 of the tube 2.
  • the intermediate patch 14 comprises a single perforation 17 of shape, for example, square or circular, d opening at least equal to that of the interior space 3 of the tube 2. Its role is, in fact, that of a spacer used to separate the upper 13 and lower 15 pellets. This also includes a certain number of perforations 18, which can be different in number and in size of the perforations 16 of the upper pad 13. But it is important, for obtaining the desired results, that the perforations 16 and 18 are substantially offset from one another, of so that a fraction as small as possible of the liquid metal has the theoretical possibility of crossing the obstacle constituted by all of the pellets 13, 14, 15 without hitting them. For a better obstacle efficiency, it is also preferable that the upper pellet 13 does not have a perforation in its center, where the probability of the presence of liquid metal is the greatest, so as to slow down the casting jet also as early as possible.
  • the total cross-section of the orifices of a given pellet should not be less than the cross-section of the outlet port of the distributor, in order to guarantee that it will always be possible to flow with a maximum metal flow rate as high as 'in the absence of obstacles.
  • leakage holes 20 have the usual functions of deflecting part of the metal flows towards the lower part of the mold. This deviation limits the flow rate and the exit speed of the metal at the gills 11, 11 ′ and thus prevents the metal from violently striking the short sides of the ingot mold and disturbing the solidification conditions there. In the case of casting between cylinders, this also makes it possible to avoid excessive deterioration of the refractory side faces.
  • these leakage holes 20 ensure a regular supply of hot metal to the lower part of the pouring space, directly above the nozzle 1: here again, this goes in the direction of better control. solidification conditions.
  • the pellets must be made of a refractory material such as zirconia, in any case compatible with the nature of the cast metal to prevent them from being attacked chemically by the metal in an excessive manner.
  • the obstacle inserted in the nozzle 1 is constituted by a tubular piece 21, provided with a bottom 22 at one of its ends. At its open end, this tubular part 21 has a shoulder 23 which can be inserted into the housing 12 formed in the hollow element 6 and which contained the pellets 13, 14, 15 in the example of implementation of the previous invention.
  • the tubular part 21 On its side wall 24, the tubular part 21 has perforations 25, 26, 27 which allow the metal liquid to pass from the interior space 28 of the tubular part 21 to the interior space 7 of the hollow element 6, after having lost a large part of its potential energy.
  • these perforations 25, 26, 27 are six in number distributed in three levels over the height of the tubular part 21, and are of approximately oval shape. They preferentially make it possible to orient the liquid metal on the side wall of the cylindrical portion 8 of the interior space 7 of the hollow element 6. In this way, the impact of the metal against this side wall provides energy absorption which is added to that undergone inside the tubular part 21. Likewise, to obtain a residence time of the metal in the nozzle 1 as long and uniform as possible, it is preferable that, as shown, the orientation of these perforations is perpendicular to the orientation of the openings 11, 11 '.
  • a tubular piece 21, the interior space 28 of which would be 84 mm long, 30 mm in diameter, perforations 25, 26, 27 of 10 ⁇ 20 mm, would have on the speed and regularity of the flows of metal, an influence substantially comparable to that of the pellets 13, 14, 15 of the obstacle described and shown in FIGS. 1a to 1d, if it were inserted in an identical nozzle 1.
  • the invention is not limited in its application to the field of continuous casting of flat steel products (slabs, thin slabs, thin strips), even if it finds a preferred application there. It can be applied to many other examples of continuous casting nozzles of all metals in all formats, for which it is desired to obtain a slowing of the flows providing better filling of the nozzle and, therefore, greater stability of the flows of the metal. liquid coming out.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Nozzles (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP96401849A 1995-09-28 1996-08-29 Eintauchausguss zum Einbringen von Metallschmelze in einer Stranggusskokille Expired - Lifetime EP0765702B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9511375 1995-09-28
FR9511375A FR2739313B1 (fr) 1995-09-28 1995-09-28 Busette pour l'introduction d'un metal liquide dans une lingotiere de coulee continue des metaux

Publications (2)

Publication Number Publication Date
EP0765702A1 true EP0765702A1 (de) 1997-04-02
EP0765702B1 EP0765702B1 (de) 1999-05-26

Family

ID=9483001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96401849A Expired - Lifetime EP0765702B1 (de) 1995-09-28 1996-08-29 Eintauchausguss zum Einbringen von Metallschmelze in einer Stranggusskokille

Country Status (24)

Country Link
US (1) US5733469A (de)
EP (1) EP0765702B1 (de)
JP (1) JP3978794B2 (de)
KR (1) KR100369257B1 (de)
CN (1) CN1064286C (de)
AT (1) ATE180427T1 (de)
AU (1) AU702389B2 (de)
BR (1) BR9603908A (de)
CA (1) CA2186084C (de)
CZ (1) CZ285931B6 (de)
DE (1) DE69602565T2 (de)
DK (1) DK0765702T3 (de)
ES (1) ES2132857T3 (de)
FR (1) FR2739313B1 (de)
GR (1) GR3030610T3 (de)
MX (1) MX9604288A (de)
PL (1) PL181356B1 (de)
RO (1) RO117242B1 (de)
RU (1) RU2163179C2 (de)
SK (1) SK281773B6 (de)
TR (1) TR199600774A2 (de)
TW (1) TW345508B (de)
UA (1) UA42764C2 (de)
ZA (1) ZA968126B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2769862A1 (fr) * 1997-10-20 1999-04-23 Usinor Busette de coulee pour installation de coulee continue des metaux, notamment de coulee entre cylindres
EP0950451A1 (de) * 1998-04-16 1999-10-20 Usinor Giessdüse zum Einführen von Metallschmelze in eine Strangiesskokille
FR2818567A1 (fr) * 2000-12-22 2002-06-28 Usinor Busette equipee d'une reglette pour l'introduction de metal liquide dans une lingotiere de coulee continue des metaux
US6425505B1 (en) 1999-09-03 2002-07-30 Vesuvius Crucible Company Pour tube with improved flow characteristics

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2767082B1 (fr) 1997-08-06 1999-10-29 Vesuvius France Sa Busette de coulee pour le transfert d'un metal liquide d'un repartiteur dans une lingotiere
GB9906116D0 (en) * 1999-03-17 1999-05-12 Didier Werke Ag Refractory product
CH691762A5 (de) * 2000-06-28 2001-10-15 Main Man Inspiration Ag Zwischenbehälter mit einer feuerfesten Giessrohreinheit für das Abgiessen von Metallschmelze in eine Bandgiessmaschine sowie eine Giessrohreinheit.
US7753273B2 (en) * 2002-07-26 2010-07-13 Es&S Automark, Llc Ballot marking system and apparatus utilizing multiple key switch voter interface
DE10240491A1 (de) * 2002-09-03 2004-01-15 Refractory Intellectual Property Gmbh & Co.Kg Feuerfestes keramisches Tauchrohr
KR100946659B1 (ko) * 2002-11-28 2010-03-10 주식회사 포스코 연속주조용 침지노즐
EP1603697B1 (de) * 2003-03-17 2006-08-16 Vesuvius Crucible Company Düse mit untergetauchtem einlass und dynamischer stabilisierung
JP2005230826A (ja) * 2004-02-17 2005-09-02 Ishikawajima Harima Heavy Ind Co Ltd 溶湯供給ノズル
CN103251994B (zh) * 2013-04-02 2016-03-30 周春华 一种用于摇摆震动条件下的血壶装置
ES2553784B1 (es) * 2014-06-09 2016-09-14 Refractaria, S.A. Distribuidor para colada de acero
CN107470568A (zh) * 2017-07-24 2017-12-15 嘉善优联物流装备有限公司 一种铸件装置中使用的铸模装置
RU2691021C2 (ru) * 2017-11-07 2019-06-07 Публичное акционерное общество "Русполимет" Разливочное устройство для разливки металла из промковша в изложницы
CN107803492A (zh) * 2017-12-05 2018-03-16 重庆庆龙新材料科技有限公司 锶铝合金成型机
CN108904222B (zh) * 2018-07-30 2020-08-07 北京航空航天大学 一种新型适于软体驱动器逆气流法制作的阻流环
CN108840795A (zh) * 2018-08-08 2018-11-20 江南大学 一种由羊毛脂制备羊毛酸和羊毛醇的方法
CN109465436B (zh) * 2018-11-12 2020-08-28 莱芜钢铁集团银山型钢有限公司 一种超薄异型坯中心点浇铸浸入式水口

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021171A (ja) * 1983-07-16 1985-02-02 Nisshin Steel Co Ltd 幅広薄板連続鋳造装置
JPS6411055A (en) * 1987-07-03 1989-01-13 Nippon Steel Corp Nozzle for pouring molten metal
EP0401144A1 (de) * 1989-05-31 1990-12-05 Institut De Recherches De La Siderurgie Francaise (Irsid) Vorrichtung und Verfahren zur Zuführung flüssigen Metalls an einer Stranggiessanlage für dünne metallische Produkte
EP0453079A1 (de) * 1990-04-17 1991-10-23 ROLLS-ROYCE plc Giessrinne und Giessdüse für geschmolzenes Metall

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JPH1011055A (ja) * 1996-06-18 1998-01-16 Kawai Musical Instr Mfg Co Ltd 電子鍵盤楽器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021171A (ja) * 1983-07-16 1985-02-02 Nisshin Steel Co Ltd 幅広薄板連続鋳造装置
JPS6411055A (en) * 1987-07-03 1989-01-13 Nippon Steel Corp Nozzle for pouring molten metal
EP0401144A1 (de) * 1989-05-31 1990-12-05 Institut De Recherches De La Siderurgie Francaise (Irsid) Vorrichtung und Verfahren zur Zuführung flüssigen Metalls an einer Stranggiessanlage für dünne metallische Produkte
EP0453079A1 (de) * 1990-04-17 1991-10-23 ROLLS-ROYCE plc Giessrinne und Giessdüse für geschmolzenes Metall

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 142 (M - 388) 18 June 1985 (1985-06-18) *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 178 (M - 819) 26 April 1989 (1989-04-26) *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2769862A1 (fr) * 1997-10-20 1999-04-23 Usinor Busette de coulee pour installation de coulee continue des metaux, notamment de coulee entre cylindres
EP0911096A1 (de) * 1997-10-20 1999-04-28 Usinor Giessdüse für Metallstranggiessvorrichtung, insbesondere für Walzgiessmaschine
EP0950451A1 (de) * 1998-04-16 1999-10-20 Usinor Giessdüse zum Einführen von Metallschmelze in eine Strangiesskokille
FR2777485A1 (fr) * 1998-04-16 1999-10-22 Usinor Busette pour l'indroduction de metal liquide dans une lingotiere de coulee continue des metaux
US6092700A (en) * 1998-04-16 2000-07-25 Usinor Nozzle for introducing liquid metal into a mold for the continuous casting of metals
CN1103255C (zh) * 1998-04-16 2003-03-19 于西纳公司 将金属液注入用于金属连铸铸模的浇铸嘴
US6425505B1 (en) 1999-09-03 2002-07-30 Vesuvius Crucible Company Pour tube with improved flow characteristics
FR2818567A1 (fr) * 2000-12-22 2002-06-28 Usinor Busette equipee d'une reglette pour l'introduction de metal liquide dans une lingotiere de coulee continue des metaux
WO2002051569A1 (fr) * 2000-12-22 2002-07-04 Usinor Busette equipee d'une reglette pour l'introduction de metal liquide dans une lingotiere de coulee continue des metaux
KR100816457B1 (ko) * 2000-12-22 2008-03-26 아르셀러미탈 프랑스 연속 주조에서 용융 금속을 잉곳 금형 내에 주입시키기위해 바를 구비한 노즐

Also Published As

Publication number Publication date
KR100369257B1 (ko) 2003-03-15
CN1064286C (zh) 2001-04-11
TR199600774A2 (tr) 1997-04-22
EP0765702B1 (de) 1999-05-26
AU702389B2 (en) 1999-02-18
CA2186084C (fr) 2008-01-29
JPH09108794A (ja) 1997-04-28
BR9603908A (pt) 1998-06-09
PL181356B1 (pl) 2001-07-31
FR2739313A1 (fr) 1997-04-04
UA42764C2 (uk) 2001-11-15
CA2186084A1 (fr) 1997-03-29
CZ279996A3 (en) 1997-04-16
SK281773B6 (sk) 2001-07-10
DK0765702T3 (da) 1999-12-06
ZA968126B (en) 1997-04-21
RU2163179C2 (ru) 2001-02-20
ATE180427T1 (de) 1999-06-15
DE69602565D1 (de) 1999-07-01
CN1154885A (zh) 1997-07-23
RO117242B1 (ro) 2001-12-28
GR3030610T3 (en) 1999-10-29
DE69602565T2 (de) 1999-12-16
KR970014880A (ko) 1997-04-28
MX9604288A (es) 1997-08-30
US5733469A (en) 1998-03-31
PL316322A1 (en) 1997-04-01
FR2739313B1 (fr) 1997-10-31
JP3978794B2 (ja) 2007-09-19
CZ285931B6 (cs) 1999-11-17
ES2132857T3 (es) 1999-08-16
SK118296A3 (en) 1998-01-14
TW345508B (en) 1998-11-21
AU6443596A (en) 1997-04-10

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