EP1351786B1 - Busette equipee d'une reglette pour l'introduction de metal liquide dans une lingotiere de coulee continue des metaux - Google Patents

Busette equipee d'une reglette pour l'introduction de metal liquide dans une lingotiere de coulee continue des metaux Download PDF

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Publication number
EP1351786B1
EP1351786B1 EP01989632A EP01989632A EP1351786B1 EP 1351786 B1 EP1351786 B1 EP 1351786B1 EP 01989632 A EP01989632 A EP 01989632A EP 01989632 A EP01989632 A EP 01989632A EP 1351786 B1 EP1351786 B1 EP 1351786B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
strip
guide
metal
nozzle according
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 - Lifetime
Application number
EP01989632A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1351786A1 (fr
Inventor
Jean-Michel Damasse
Laurent Gacher
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.)
Primetals Technologies Austria GmbH
ThyssenKrupp Steel Europe AG
USINOR SA
Original Assignee
Voest Alpine Industrienlagenbau GmbH
ThyssenKrupp Steel AG
USINOR 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 Voest Alpine Industrienlagenbau GmbH, ThyssenKrupp Steel AG, USINOR SA filed Critical Voest Alpine Industrienlagenbau GmbH
Priority to SI200130172T priority Critical patent/SI1351786T1/xx
Publication of EP1351786A1 publication Critical patent/EP1351786A1/fr
Application granted granted Critical
Publication of EP1351786B1 publication Critical patent/EP1351786B1/fr
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

Definitions

  • the invention relates to the continuous casting of metals. She relates more precisely to the refractory material nozzles by which the liquid metal to be cast, such as steel, is introduced into the ingot mold of a continuous casting installation, in particular of a casting between cylinders.
  • These nozzles are connected by their upper end to the container serving as a reservoir of liquid metal, called a distributor, and their lower end plunges into the liquid metal bath present in the ingot mold where solidification of the cast product should begin.
  • the first role of these nozzles is to protect the metal jet from atmospheric oxidation liquid on its route between the container and the mold. They allow also, thanks to appropriate configurations of their end lower, to favorably direct the flows of the liquid metal in the ingot mold so that the solidification of the product takes place in the best possible conditions.
  • the casting of thin metallic strips of a few mm thick directly from liquid metal can take place on a so-called "casting between cylinders" installation. It includes an ingot mold whose casting space is delimited on its long sides by a pair of internally cooled cylinders with axle horizontal parallel and rotating around these axes in opposite directions, and on its short sides by closing plates (called side faces) in refractory material applied against the ends of the cylinders.
  • the cylinders can also be replaced by endless belts cooled.
  • nozzles When pouring between cylinders, nozzles are often used.
  • the first one part is composed of a cylindrical tube whose upper end is connected to an opening in the bottom of the distributor which constitutes the reserve of liquid steel supplying the ingot mold.
  • This orifice 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. From the section of this orifice depends on the maximum metal flow that can flow inside the nozzle.
  • the second part attached to the lower end of the previous tube, for example by screwing, or being integrated in its construction, is intended for be immersed in the liquid metal bath present in the mold.
  • She is composed of a hollow element inside which opens the lower opening of the previous cylindrical tube.
  • the interior space of this hollow element has a general shape more or less elongated according to the dimensions of the space of casting of the machine on which the nozzle is to be mounted. He is oriented substantially perpendicular to the tube.
  • the hollow element is placed parallel to the cylinders, and the liquid metal flows into the ingot mold through vents on the sides of the element hollow, usually at each of its ends. In the latter case, the metal flows. coming out of the nozzle are thus oriented preferably towards the side faces, in order to bring metal hot on their surfaces, and prevent them from unwanted solidifications of metal (called “parasitic solidifications”) which seriously disrupt the operation of the machine.
  • the gills can have a horizontal or oblique downward orientation.
  • Various ports of less importance that these gills can also be spared on side walls and / or the bottom of the nozzle, in order to feed directly into hot metal the regions of the mold located on the sides of the nozzle and / or under it. We thus aim, in particular, to improve the homogeneity thermal of the metal present in the mold.
  • these obstacles can be inserted in the first cylindrical part or in its extension (see the document EP-A-0 765 702). They can also include a "strip", that is to say a parallelepipedic element elongated in porous refractory or perforated arranged inside the hollow element constituting the second part of the nozzle (see document EP-A-0 950 451). This strip allows also to supply the metal outlet openings more evenly which are optionally provided in the bottom or the side walls of the nozzle.
  • a deep immersion of the nozzle causes a large mass of refractory to be in contact with the metal liquid between the cylinders, which is unfavorable from the point of view thermal, particularly at the start of casting when the nozzle is not still in thermal equilibrium with metal.
  • the object of the invention is to provide a nozzle equipped with a strip free from the disadvantages mentioned above.
  • the invention relates to a nozzle for the introduction of a liquid metal in an ingot mold for continuous casting of metals, of the type comprising a first tubular part, one end of which is intended for be connected to a container containing said liquid metal, and the other of which end opens into a second hollow portion of elongated shape, at least a portion of the interior space is oriented substantially perpendicular to said first tubular part, said hollow part comprising a hole at each of its ends, a strip provided with perforations being arranged in the interior space of said hollow part, characterized in that the openings of said hollow part are closed at above said strip.
  • the openings of said hollow part can be closed by protrusions formed on the upper face of the strip.
  • Said protuberances may have their wall facing inside the inclined nozzle.
  • Said strip may include a part in relief on at least a portion of the width of its upper face, the top of said part in relief being located on the longitudinal axis of the strip.
  • Said strip can have reliefs on its upper face between which the perforations are made.
  • Said transverse reliefs may have shaped sections general triangular.
  • the transverse relief located in the center of the strip can have a section in the general shape of an isosceles triangle, and the other reliefs cross sections in the general shape of any triangles.
  • the second hollow part of the nozzle may include one or orifices made in its bottom and / or its side walls.
  • the invention consists in providing a complete obturation of the upper area of the gills of the second part of the nozzle, above the strip.
  • outlet ports 7-17 or to replace them orifices made in the large walls side of the hollow element 4, and oriented towards the long sides of the casting space (in other words towards the cylinders in the case of a casting installation between cylinders).
  • These 7-17 holes may also not be strictly cylindrical, but have an elliptical cross-section, for example. They may also (in particular according to one of the variants of EP-A-0 771 600) be obliquely oriented. Finally, they can be replaced by one or several slots each extending over part or all of the length of the bottom 18 of the hollow element 4, and it would be important that they are fed uniformly over their entire length. he must also be understood that it would remain in the spirit of the invention not to provide no outlet for the liquid metal other than the vents 5, 6.
  • the nozzle 1 also comprises, arranged in its space inside 3, a perforated strip 19 resting on shoulders 20 formed on the walls of the hollow element 4, and extending over the assembly of the length of this hollow element 4. Its function is, as is known, to create pressure drops in the liquid metal, so as to obtain a better filling of the interior space 3, and thus regularize the liquid metal flows out of the nozzle 1.
  • This strip 19 has a general parallelepiped shape in the example shown in the figures 1a and 1b. It has perforations 21 which pass right through it, from its upper face 22 to its lower face 23. In the example shown, these perforations 21 are arranged in a double row and distributed on either side of the longitudinal axis of the strip 19, and they have a strictly cylindrical shape. It should be understood that this provision and this form are only nonlimiting examples. It is notably possible to provide only a single row of perforations 21.
  • the parts of the openings 5, 6 located above the strip 19 are closed, so as to force all of the liquid metal passing through the nozzle 1 to pass through the slide 19.
  • this closure is achieved by means of protrusions 24, 25 integrated construction at the ends of the strip 19.
  • the interior space of the hollow element 4 is divided in two communicating parts separated by strip 19: one part upper 26 and a lower part 27 which, alone, opens outside of the nozzle 1 by the lower, non-plugged parts of the gills 5, 6 and the holes 7-17.
  • the invention has in particular the following advantages over the nozzles known equipped with a strip and whose upper parts of the gills do not are not blocked.
  • the good sealing of the strip 19 is better ensured, due to the increase in its contact surface with the hollow element 4 provided by the protrusions 24, 25 or, in general by the material ensuring the obturation of the upper part of the gills 5, 6.
  • the strip 19 can be given various shapes, of which nonlimiting examples are given in FIGS. 2 to 4.
  • this raised part 28 extends over full length and full width of the strip 27, and has a section uniform triangular cross-section, the vertex of the triangle coinciding with the axis longitudinal of the strip 27.
  • the function of this raised part 28 is to "burst" the metal jet from the cylindrical tube 2 of the nozzle 1 by distributing it symmetrically on the cross section of the hollow element 4 of the nozzle 1.
  • FIG. 3 A variant configuration of the strip is shown on FIG. 3.
  • the strip 29 is here of generally parallelepiped shape, and has on its upper surface 22 transverse reliefs 30 of section triangular, between which the perforations are pierced 21.
  • These reliefs transverse 30 constitute obstacles to the flow of liquid metal allowing better homogeneity of the metal distribution liquid between the various perforations 21.
  • the obturation of the upper parts vents of the nozzle 1 makes it possible to take optimal advantage of the existence of these transverse reliefs 30. Indeed, the correct filling of the upper part 26 of the hollow element 4 which it provides helps to stabilize the flows in the time, and therefore to ensure that the effect of the transverse reliefs 30 is indeed obtained reliably and consistently. If the vents on nozzle 1 were left free in their upper part, the flows inside the nozzle 1 would be much more random, and the effect of the transverse reliefs 30 would not be under control.
  • the central transverse relief 31 has a isosceles triangle shaped section, so as to distribute the metal equally liquid between the right side and the left side of the nozzle 1, while the other transverse reliefs 32 have triangular sections in the form of any triangles, calculated to homogenize the distribution of the metal liquid between the different perforations 21.
  • protrusions 24, 25 have also been imparted to the walls closing the upper parts of the openings of the nozzle 1 of the faces 33, 34 turned towards the inside of the nozzle 1 inclined, and not vertical. We thus seeks to avoid the formation of dead zones in the liquid metal, at the level of the intersection between the protrusions 24, 25 and the upper face 22 of the strip 29. This characteristic can, of course, be transposed to other strip configurations which have been described.
  • angles of the transverse reliefs (30, 31, 32) are sharp angles, but it would remain in the spirit of the invention to round them up, so as to avoid their possible uncontrolled erosion under the effect of friction with metal liquid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Confectionery (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP01989632A 2000-12-22 2001-12-17 Busette equipee d'une reglette pour l'introduction de metal liquide dans une lingotiere de coulee continue des metaux Expired - Lifetime EP1351786B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200130172T SI1351786T1 (en) 2000-12-22 2001-12-17 Nozzle equipped with a bar for introducing molten metal into an ingot mould for continuous metal casting

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0016975A FR2818567B1 (fr) 2000-12-22 2000-12-22 Busette equipee d'une reglette pour l'introduction de metal liquide dans une lingotiere de coulee continue des metaux
FR0016975 2000-12-22
PCT/FR2001/004022 WO2002051569A1 (fr) 2000-12-22 2001-12-17 Busette equipee d'une reglette pour l'introduction de metal liquide dans une lingotiere de coulee continue des metaux

Publications (2)

Publication Number Publication Date
EP1351786A1 EP1351786A1 (fr) 2003-10-15
EP1351786B1 true EP1351786B1 (fr) 2004-07-28

Family

ID=8858154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01989632A Expired - Lifetime EP1351786B1 (fr) 2000-12-22 2001-12-17 Busette equipee d'une reglette pour l'introduction de metal liquide dans une lingotiere de coulee continue des metaux

Country Status (14)

Country Link
US (1) US20040065757A1 (ru)
EP (1) EP1351786B1 (ru)
JP (1) JP3853735B2 (ru)
KR (1) KR100816457B1 (ru)
CN (1) CN1223419C (ru)
AT (1) ATE271944T1 (ru)
DE (1) DE60104566T2 (ru)
DK (1) DK1351786T3 (ru)
ES (1) ES2223947T3 (ru)
FR (1) FR2818567B1 (ru)
SI (1) SI1351786T1 (ru)
TR (1) TR200401918T4 (ru)
WO (1) WO2002051569A1 (ru)
ZA (1) ZA200304808B (ru)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9718068B2 (en) * 2014-09-03 2017-08-01 Kohler Co. Shower
KR102284471B1 (ko) * 2014-09-05 2021-08-03 세메스 주식회사 처리액 노즐 및 기판 처리 장치
CN112643004B (zh) * 2019-10-10 2022-07-19 青岛正望新材料股份有限公司 一种双辊薄带连铸用浇铸系统及布流水口

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2414874A (en) * 1942-09-17 1947-01-28 Union Carbide & Carbon Corp Welding
FR1094517A (fr) * 1953-11-25 1955-05-20 Installation de coulée pour métaux en fusion
JPH01317658A (ja) * 1988-06-17 1989-12-22 Nippon Steel Corp 金属薄帯の連続鋳造用ノズル
JPH07290203A (ja) * 1994-04-26 1995-11-07 Nippon Steel Corp 双ドラム式連続鋳造機の注入用横吹出しノズル
FR2739313B1 (fr) * 1995-09-28 1997-10-31 Usinor Sacilor Busette pour l'introduction d'un metal liquide dans une lingotiere de coulee continue des metaux
FR2740367B1 (fr) * 1995-10-30 1997-11-28 Usinor Sacilor Busette pour l'introduction d'un metal liquide dans une lingotiere de coulee continue de produits metalliques, dont le fond comporte des orifices
FR2777485B1 (fr) * 1998-04-16 2000-05-19 Usinor Busette pour l'indroduction de metal liquide dans une lingotiere de coulee continue des metaux

Also Published As

Publication number Publication date
FR2818567B1 (fr) 2003-03-28
FR2818567A1 (fr) 2002-06-28
DK1351786T3 (da) 2004-12-06
DE60104566T2 (de) 2005-08-11
CN1223419C (zh) 2005-10-19
EP1351786A1 (fr) 2003-10-15
ZA200304808B (en) 2004-04-23
TR200401918T4 (tr) 2004-10-21
JP2004520166A (ja) 2004-07-08
JP3853735B2 (ja) 2006-12-06
WO2002051569A1 (fr) 2002-07-04
ES2223947T3 (es) 2005-03-01
WO2002051569A8 (fr) 2002-08-29
ATE271944T1 (de) 2004-08-15
DE60104566D1 (de) 2004-09-02
KR20030074668A (ko) 2003-09-19
SI1351786T1 (en) 2004-12-31
KR100816457B1 (ko) 2008-03-26
CN1482951A (zh) 2004-03-17
US20040065757A1 (en) 2004-04-08

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