EP2406024B1 - Buse de coulée pour une installation de coulée horizontale sur bande - Google Patents

Buse de coulée pour une installation de coulée horizontale sur bande Download PDF

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Publication number
EP2406024B1
EP2406024B1 EP10711534A EP10711534A EP2406024B1 EP 2406024 B1 EP2406024 B1 EP 2406024B1 EP 10711534 A EP10711534 A EP 10711534A EP 10711534 A EP10711534 A EP 10711534A EP 2406024 B1 EP2406024 B1 EP 2406024B1
Authority
EP
European Patent Office
Prior art keywords
casting nozzle
nozzle according
outflow
base
flow direction
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.)
Not-in-force
Application number
EP10711534A
Other languages
German (de)
English (en)
Other versions
EP2406024A1 (fr
Inventor
Hellfried Eichholz
Sven Klawiter
Rune SCHMIDT-JÜRGENSEN
Karl-Heinz Spitzer
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.)
Salzgitter Flachstahl GmbH
Original Assignee
Salzgitter Flachstahl 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
Application filed by Salzgitter Flachstahl GmbH filed Critical Salzgitter Flachstahl GmbH
Publication of EP2406024A1 publication Critical patent/EP2406024A1/fr
Application granted granted Critical
Publication of EP2406024B1 publication Critical patent/EP2406024B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0631—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a travelling straight surface, e.g. through-like moulds, a belt
    • 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
    • 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

Definitions

  • the invention relates to a pouring nozzle for a horizontal strip casting plant, in particular for the casting of steel strip. In such casting plants must be applied from the nozzle, which forms a pouring channel, the liquid steel on a cooled endless belt.
  • Such a casting nozzle is known from “ Direct Strip Casting (DSC) - Option for the Production of New Steel Grades "- steel research 74 (2003) no. 11/12 p. 724-731 ,
  • a web of refractory material projecting transversely to the flow direction is arranged in the direction of flow, first at the top and then at the bottom of the pouring nozzle channel. Both webs form a weir in order to be able to retain in the sense of the effect of a siphon possible small slag residues and oxides in the melt.
  • the transfer of the liquid steel on the cooled endless belt is slidably along a slope in the outlet area.
  • the object of the invention is to improve the known casting nozzle to the effect that the melt distributed evenly when hitting the endless belt in the transverse direction.
  • the casting nozzle according to the invention is characterized in that seen in the flow direction of the hollow cross-section of the hollow block in the outlet area is uniformly reduced towards the outlet and the end face of the bottom is formed to the surface of the endless belt in such a way that the melt is perpendicular to the endless belt.
  • the front side of the floor can be formed vertically or provided with an undercut.
  • the cross-sectional reduction is preferably carried out by reducing the clear height distance.
  • An increase in the floor compared to the ceiling has proven to be a favorable option.
  • the distance reduction can be realized particularly simply if it takes place linearly.
  • the desired effect is achieved without problems if the surface of the floor rises linearly as far as the outlet edge, viewed in the flow direction.
  • the hollow block can be made in one piece or in several parts of separate elements.
  • a multi-part of the hollow block may consist of separate floor element with a one-piece consisting of ceiling and two side walls hood or a separate ceiling element, a separate floor element and two separate side elements.
  • the rectangular or undercut arrangement of the end face of the bottom element of the casting nozzle with respect to the surface of the endless belt causes a better distribution of melt on the endless belt.
  • the outflowing melt thus almost hits perpendicular to the endless belt and generates an additional transverse pulse.
  • the height from the outlet edge to the endless belt should preferably be 30 mm.
  • the slope of the run-up slope of the floor element is linear, similar to a ramp.
  • the extent of the increase in the flow direction should be at least 30 mm, preferably it is> 50 mm.
  • the outlet edge is provided with a chamfer. This chamfer simultaneously reduces the wear on the highly stressed outlet edge.
  • the pouring nozzle according to the invention is explained in detail.
  • FIG. 1 shows in a longitudinal section and FIG. 2 It is designed as a narrow rectangular hollow block and consists in this embodiment together of a ceiling element 2, a bottom element 3 and two side elements 4, 5 (in FIG. FIG. 2 ). All these parts 2 - 5 are made of refractory material, preferably ceramic and form a horizontally lying rectangular channel. 6
  • the bottom element 3 has a web extending into the channel 6 and extending transversely to the flow direction, which forms a so-called lower weir 7.
  • the pouring nozzle 1 is connected upstream of an inlet channel 8, which is connected to a distributor, not shown here.
  • weirs 7, 10 act together like a siphon and are supposed to retain any slag residues and oxides still present in the melt.
  • Both weirs 7, 10 can be arranged both in the pouring nozzle 1 and in the inlet channel 8 or as shown here, the upper weir 10 in the inlet channel 8 and the lower weir 7 in the pouring nozzle. 1
  • the inlet channel 8 is surrounded by a frame 22 made of metal, which is tongue-like at the end to clamp the adjacent casting nozzle 1 can.
  • the surface of the bottom element 3 has a run-on bevel 11, the rise of which takes place linearly and which extends up to the outlet edge 12.
  • the spout is not provided with a bevel, but rather the end face 21 of the bottom element 3 is at right angles with respect to the surface of the endless belt 14.
  • the run-on slope 11, viewed in the direction of flow, has an extension 18 of at least 30 mm, preferably> 50 mm.
  • the beginning of the run-on slope 11 is provided in the immediate vicinity of the lower weir 7.
  • this is this provided with a chamfer 23.
  • the height 19 from the lower edge of the chamfer 23 to the surface of the endless belt 14 is preferably 30 mm.
  • the end face 21 of the bottom element 3 opposite the end face 26 of the ceiling element 2 has a projection 20.
  • FIG. 3 shows in a section C - C of FIG. 2 Another measure to distribute the outflowing melt 13 in the transverse direction uniformly on the endless belt 14.
  • the bottom element 3 in both edge regions of the projection (20) has a sloping in the flow direction inclined surface 24, 25.
  • the respective inclined surface 24, 25 forms a triangle whose one corner is formed by the beginning of the starting bevel 11, the second corner by the outlet edge 12 and the third corner by the end face of the respective side element 4, 5.
  • FIG. 3 The representation in FIG. 3 can also be seen how far the bottom element 3 projects from the ceiling element 2.
  • This supernatant 20 should be at least 10 mm in order to be able to act early on the outflowing melt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Claims (11)

  1. Buse de coulée pour une installation de coulée sur bande horizontale, qui se présente sous la forme d'un bloc creux rectangulaire étroit constitué d'un matériau ignifuge avec un fond, un toit et deux parois latérales et dont la zone de décharge ne se trouve qu'un peu au-dessus d'une bande sans fin refroidie recevant la masse fondue en cours de décharge, caractérisée en ce que,
    en observant dans le sens de l'écoulement, la section transversale intérieure du bloc creux dans la zone de décharge s'amenuise de manière uniforme dans le sens de la décharge, dans laquelle le fond s'élève par rapport au toit et le côté frontal (21) du fond du bloc creux est formé perpendiculairement à la surface de la bande sans fin (14) ou le côté frontal (21) du fond du bloc creux présente une contre-dépouille vis-à-vis de la surface de la bande sans fin (14) si bien que la masse fondue se retrouve horizontalement sur la bande sans fin.
  2. Buse de coulée selon la revendication 1,
    caractérisée en ce que
    le fond se présente sous la forme d'un élément de fond séparé (3) et le toit et les deux parois latérales sous la forme d'un capot rectangulaire d'une seule pièce et la surface interne de l'élément de fond (3) monte dans la zone de décharge, en observant dans le sens de coulée, linéairement jusqu'à l'arête de décharge (12).
  3. Buse de coulée selon les revendications 1 et 2,
    caractérisée en ce que
    le bloc creux est formé d'un élément de fond séparé (3), de deux éléments latéraux séparés (4, 5) et d'un élément de toit séparé (2) et la surface de l'élément de fond (3) monte, dans la zone de décharge, en observant dans le sens de coulée, linéairement jusqu'à l'arête de décharge (12).
  4. Buse de coulée selon la revendication 1,
    caractérisée en ce que
    l'extension de la montée du chanfrein d'entrée (11) dans le sens de coulée atteint au moins 30 mm.
  5. Buse de coulée selon la revendication 4,
    caractérisée en ce que
    l'extension est supérieure à 50 mm.
  6. Buse de coulée selon l'une quelconque des revendications 1 à 5, caractérisée en ce que
    le côté frontal (21) de l'élément de fond (3) présente un porte-à-faux (20) par rapport au côté frontal (26) de l'élément de toit (2) en observant dans le sens d'écoulement.
  7. Buse de coulée selon la revendication 6,
    caractérisée en ce que
    le porte-à-faux (20) est de 10 mm.
  8. Buse de coulée selon la revendication 2 ou la revendication 3, caractérisée en ce que
    l'élément de fond (3) présente dans les deux zones de bord de la décharge, respectivement, une surface de chanfrein (24, 25) qui se réduit en observant dans le sens d'écoulement.
  9. Buse de coulée selon la revendication 4,
    caractérisée en ce que
    la projection de la surface de chanfrein (24, 25) forme un triangle dont un sommet est formé par le début du chanfrein d'entrée (11), le deuxième sommet par l'arête de décharge (12) et le troisième sommet par le côté frontal de l'élément latéral respectif (4, 5).
  10. Buse de coulée selon l'une quelconque des revendications 1 à 9, caractérisée en ce que
    l'élément de fond (3) présente un angle de dépouille (23) sur l'arête de décharge (12).
  11. Buse de coulée selon les revendications 1 et 10,
    caractérisée en ce que
    la distance (19) de l'arête inférieure de l'angle de dépouille (23) à la surface de la bande sans fin (14) atteint de préférence 30 mm.
EP10711534A 2009-03-12 2010-02-15 Buse de coulée pour une installation de coulée horizontale sur bande Not-in-force EP2406024B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009012984A DE102009012984B4 (de) 2009-03-12 2009-03-12 Gießdüse für eine horizontale Bandgießanlage
PCT/DE2010/000213 WO2010102599A1 (fr) 2009-03-12 2010-02-15 Buse de coulée pour une installation de coulée horizontale sur bande

Publications (2)

Publication Number Publication Date
EP2406024A1 EP2406024A1 (fr) 2012-01-18
EP2406024B1 true EP2406024B1 (fr) 2012-12-26

Family

ID=42224481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10711534A Not-in-force EP2406024B1 (fr) 2009-03-12 2010-02-15 Buse de coulée pour une installation de coulée horizontale sur bande

Country Status (10)

Country Link
US (1) US8408279B2 (fr)
EP (1) EP2406024B1 (fr)
KR (1) KR101666454B1 (fr)
CN (1) CN102369071B (fr)
AU (1) AU2010223680B2 (fr)
DE (1) DE102009012984B4 (fr)
RU (1) RU2518864C2 (fr)
UA (1) UA105041C2 (fr)
WO (1) WO2010102599A1 (fr)
ZA (1) ZA201106209B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011010040B3 (de) 2011-02-02 2012-08-02 Salzgitter Flachstahl Gmbh Verfahren und Einrichtung zum Erzeugen eines gegossenen Bandes aus Stahl mit über den Bandquerschnitt und die Bandlänge einstellbaren Werkstoffeigenschaften
DE102012013425A1 (de) 2012-07-03 2014-01-09 Salzgitter Flachstahl Gmbh Kontinuierlich arbeitende Bandgieß- und Walzanlage
CN102974787A (zh) * 2012-12-06 2013-03-20 广西南南铝箔有限责任公司 水平式铸轧机铸嘴
DE102015215961A1 (de) 2015-08-21 2017-02-23 Schaeffler Technologies AG & Co. KG Vorrichtung zur Kraftsimulation an einem Betätigungselement eines Fahrzeuges, vorzugsweise ein Pedalfkraftsimulator
DE102015114725B3 (de) * 2015-09-03 2016-12-08 Salzgitter Flachstahl Gmbh Schmelzenaufgabesystem für eine horizontale Bandgießanlage

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH633205A5 (de) * 1978-01-30 1982-11-30 Alusuisse Vorrichtung zum zufuehren einer metallschmelze beim bandgiessen.
DE3369474D1 (en) * 1982-04-28 1987-03-05 Hazelett Strip Casting Corp Method and apparatus for feeding and continuously casting molten metal with inert gas applied to the moving mold surfaces and to the entering metal
US4593742A (en) * 1982-04-28 1986-06-10 Hazelett Strip-Casting Corporation Apparatus for feeding and continuously casting molten metal with inert gas applied to the moving mold surfaces and to the entering metal
JPS59125244A (ja) 1982-12-28 1984-07-19 Sumitomo Metal Ind Ltd ツインベルト連鋳機の給湯装置用樋
EP0258469A1 (fr) * 1986-08-29 1988-03-09 Fried. Krupp Gesellschaft mit beschränkter Haftung Dispositif de coulée de bandes d'acier dans une lingotière de coulée à double bandes
US6173755B1 (en) * 1996-05-23 2001-01-16 Aluminum Company Of America Nozzle for continuous slab casting
US5804136A (en) * 1996-11-27 1998-09-08 Hazelett Strip-Casting Corporation Radial-flow distributor for wide uniform nonturbulent non-dribbling pouring of molten metal into a continuous metal-casting machine-methods and apparatus
FR2774930B1 (fr) * 1998-02-13 2000-05-19 Pechiney Rhenalu Bandes en alliage d'aluminium a grande homogeneite de surface et procede de fabrication de ces bandes
US20060191664A1 (en) * 2005-02-25 2006-08-31 John Sulzer Method of and molten metal feeder for continuous casting
DE102005062854A1 (de) * 2005-12-23 2007-07-05 Salzgitter Flachstahl Gmbh Verfahren und Einrichtung zum Erzeugen von metallischen Warmbändern insbesondere aus Leichtbaustahl

Also Published As

Publication number Publication date
DE102009012984A1 (de) 2010-09-23
EP2406024A1 (fr) 2012-01-18
US20120132389A1 (en) 2012-05-31
ZA201106209B (en) 2012-06-26
KR20110126136A (ko) 2011-11-22
KR101666454B1 (ko) 2016-10-14
WO2010102599A1 (fr) 2010-09-16
CN102369071A (zh) 2012-03-07
DE102009012984B4 (de) 2013-05-02
AU2010223680A1 (en) 2011-09-22
AU2010223680B2 (en) 2016-02-18
RU2518864C2 (ru) 2014-06-10
US8408279B2 (en) 2013-04-02
CN102369071B (zh) 2014-07-09
RU2011141295A (ru) 2013-04-20
UA105041C2 (uk) 2014-04-10

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