EP2598268B1 - SCHMELZENAUFGABESYSTEM ZUM BANDGIEßEN - Google Patents

SCHMELZENAUFGABESYSTEM ZUM BANDGIEßEN Download PDF

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Publication number
EP2598268B1
EP2598268B1 EP11740894.8A EP11740894A EP2598268B1 EP 2598268 B1 EP2598268 B1 EP 2598268B1 EP 11740894 A EP11740894 A EP 11740894A EP 2598268 B1 EP2598268 B1 EP 2598268B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
melt
heating
delivery system
outlet element
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.)
Active
Application number
EP11740894.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2598268A1 (de
Inventor
Jörg BAUSCH
Reiner PÜRLING
Jochen SCHLÜTER
Jochen Wans
Karl-Heinz Spitzer
Hellfried Eichholz
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.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
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Filing date
Publication date
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP2598268A1 publication Critical patent/EP2598268A1/de
Application granted granted Critical
Publication of EP2598268B1 publication Critical patent/EP2598268B1/de
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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
    • B22D11/10—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
    • 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 a melt feeding system for horizontal strip casting of a molten metal with a discharge element, in particular with a pouring nozzle for the free overflow of the molten metal, hereinafter referred to as "nozzle", and with at least one arranged in the region of the outlet element heater for heating the Outlet element according to the preamble of patent claim 1.
  • the horizontal strip casting of metals which is also referred to as direct strip casting and BCT (Band Casting Technology), is used for example in steel, for example, with a close to final casting in combination with an offline or an inline rolling.
  • the forming or rolling step has both the purpose of reducing the thickness and the structure formation, ie the recrystallization. It is a process aimed at the production of hot rolled strip for steel alloys.
  • liquid steel is fed by a feed system with a correspondingly formed nozzle onto a circulating transport belt cooled from below with water.
  • the melt addition during horizontal strip casting takes place via the melt feed vessel or feed system.
  • the melt flows through a filling area and then an outlet area before it passes through a ceramic component, such as a nozzle with a free overflow on the conveyor belt.
  • the conveyor belt is driven and guided by two pulleys.
  • the melt applied to the conveyor belt solidifies completely in the area of the primary cooling. After solidification, the strip enters inline rolling in rolling stands. After inline rolling and another cooling process, the belt is rewound.
  • Such a casting method for strip casting is from the DE 198 52 275 A1 known.
  • Other melt dispensing systems are out US 4 619 309 A1 and DE10 2004 015 713 A1 known.
  • this object is achieved in a melt delivery system of the type mentioned, as indicated in claim.
  • an active heating of the outlet element ie the nozzle
  • the area close to the nozzle is also heated.
  • the outlet element itself is equipped with the heating device, or the heating device is arranged adjacent to the outlet element.
  • the outlet element is at least partially formed of a refractory ceramic.
  • the heater is designed for example as a gas heater.
  • the heater is arranged or integrated in a floor, in side walls, in a weir, a dam, an overflow and / or in a cover of the outlet element or the nozzle.
  • the heating device in particular in the form of heating rods, is preferably arranged in recesses or grooves in the bottom and / or in the cover.
  • the heating device is surrounded by ceramic components. These can be used in different geometries.
  • the heating elements are designed as carbide heating rods, in particular as lithium carbide or as silicon carbide heating rods.
  • the configured with at least one pore burner heater can be infinitely and quickly controlled over wide areas.
  • the pore burner can be operated with a liquid heating medium, but preferably with a gas. It comes with simultaneous delivery of a combustible fluid and air to a combustion reaction in a ceramic foam.
  • the pore burner can thus a Düsenunter- and / or -obererteil fill in whole or in part by area. Due to the high surface power density that can be achieved with the pore burner, this can be operated as a compact burner unit.
  • the infinitely variable burner output makes it possible to provide the required burner heat in a finely dosed manner in order to adapt the nozzle surfaces to the melt parameters required in the respective melting process.
  • inductive heating means are advantageously used, for. B. WS “Inducer” Fa. RHI.
  • the coil geometry should be adapted to the ceramic component to be heated in order to ensure rapid and uniform heating.
  • the ceramic should also have sufficient electrical conductivity to provide a short warm-up time, preferably about 10 minutes, together with the required power density.
  • the melt delivery system provides a unit for supplying an inert gas to the strand of the metal strip to be cast in the region of the outlet element.
  • the radiation also heats the ceramic. Only suitable cooling measures must be taken for the conveyor belt, over which the cast metal strip is removed. Likewise, heating elements can be integrated in the bottom of the nozzle, in particular in the region of an overflow, in a dam, a weir or in the side walls of the nozzle.
  • the invention also has the advantage that the casting process becomes more robust against time and temperature losses.
  • the casting can also be done over a longer period.
  • the furnace 2 can be opened down to a tapping channel 5.
  • the stopper rod 4 is mounted in the closed state relative to a sealing ring 6.
  • the melt flows into a preferably also heated or insulated task vessel 7. From this, the melt via an outlet channel 8, which ends in an outlet region, in particular in a nozzle 9.
  • the nozzle 9 is equipped with a dam 10 and a weir 11 to channel the flow of the melt.
  • a gas nozzle 12 is provided, which generates a flow of an inert gas opposite to the flow direction of the melt in order to distribute the melt, preferably also transversely to the casting direction, and / or to prevent superficial corrosion of the solidifying melt.
  • the conveyor belt 13 passes over a deflection or drive roller 15. Further, the conveyor belt 13 is guided via support rollers 16 and / or a honeycomb grid. Between them, spray nozzles 17 are arranged, which spray a cooling medium taken from a basin 18 onto the underside of the conveyor belt 13 in order to solidify the metal strip 14.
  • this follower forming segments on the two narrow narrow sides of the conveyor belt 13, which are arranged overlapping each other or closely adjacent to each other to prevent leakage of the solidifying metal.
  • the distance of the segments is either predetermined by the width of the conveyor belt 13 or adjustable according to the desired width.
  • a nozzle 9 constructed like the nozzle 9 and therefore provided with the same reference numeral 9 (FIG. Fig. 2 ) is provided with heating elements in several places in order to provide a constant ambient temperature for the melt through the surfaces adjacent to the molten metal.
  • 20 heating devices are provided both in the nozzle upper part 19 and in the nozzle lower part.
  • two heaters 21, 22 are arranged one behind the other in the flow direction of the melt.
  • Each of the heating devices 21, 22 comprises a heating rod 24 mounted in a ceramic tube 23.
  • a heating rod 26 is also mounted in a front weir 25 of the nozzle 11.
  • the weir is preferably designed inside as a ceramic tube.
  • the heating element 26 may be integrated in the ceramic tube.
  • the weir 25 controls the outflow of the melt from the nozzle 9.
  • a heating element 28 is housed in the nozzle lower part 20 in a ceramic tube 27, a heating element 28 is housed.
  • the heating rods 24, 26, 28 are made of silicon or lithium carbide, for example.
  • a nozzle 30 (FIG. Fig. 3 ) with a lower part 31 and an upper part 32 are on the upper side heating rods 33, 34 formed as ohmic resistance heaters and extend transversely to the flow direction of the melt, which leaves the nozzle via a dam 35.
  • the nozzle top and bottom parts 19, 20 and 31, 32 are constructed, for example, completely made of a refractory ceramic.
  • the refractory ceramic may be provided with recesses into which ceramic-sheathed heating elements are introduced, such as the heating rods 33, 34.
  • the nozzle top and bottom parts 19, 20 and 31, 32 may also consist of a metal having a sufficiently higher melting temperature.
  • the nozzle tops and bottoms 19, 20 and 31, 32 may also be wholly or partially made of a steel, for example a stainless steel, with respect to use adapted properties, in particular with regard to the corrosivity, wherein also in this case heating rods can be introduced with ceramic sheaths in corresponding recesses in the nozzle top and bottom parts.
  • the arrow S in the Figures 2 and 3 denotes the flow direction of the melt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Coating With Molten Metal (AREA)
  • Furnace Details (AREA)
  • Furnace Charging Or Discharging (AREA)
EP11740894.8A 2010-07-31 2011-07-29 SCHMELZENAUFGABESYSTEM ZUM BANDGIEßEN Active EP2598268B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010033018A DE102010033018A1 (de) 2010-07-31 2010-07-31 Schmelzenaufgabesystem zum Bandgießen
PCT/EP2011/063098 WO2012016922A1 (de) 2010-07-31 2011-07-29 SCHMELZENAUFGABESYSTEM ZUM BANDGIEßEN

Publications (2)

Publication Number Publication Date
EP2598268A1 EP2598268A1 (de) 2013-06-05
EP2598268B1 true EP2598268B1 (de) 2019-09-11

Family

ID=44629759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11740894.8A Active EP2598268B1 (de) 2010-07-31 2011-07-29 SCHMELZENAUFGABESYSTEM ZUM BANDGIEßEN

Country Status (8)

Country Link
US (1) US20130269905A1 (ko)
EP (1) EP2598268B1 (ko)
KR (1) KR20130041927A (ko)
CN (1) CN103025456B (ko)
BR (1) BR112013002475A2 (ko)
DE (1) DE102010033018A1 (ko)
RU (1) RU2628590C2 (ko)
WO (1) WO2012016922A1 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016116711A1 (de) 2016-09-07 2018-03-08 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung eines Metallbandes auf einer horizontalen Bandgießanlage
DE102017221969A1 (de) 2017-12-05 2019-06-06 Sms Group Gmbh Verfahren und Vorrichtung zur Herstellung eines bandförmigen Verbundmaterials

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3587718A (en) * 1968-05-22 1971-06-28 Robert K Hopkins Continuous casting apparatus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1396701A (en) * 1971-07-16 1975-06-04 Singer A R E Strip casting
CH633205A5 (de) * 1978-01-30 1982-11-30 Alusuisse Vorrichtung zum zufuehren einer metallschmelze beim bandgiessen.
DE4039959C1 (ko) * 1990-12-14 1992-01-23 Wieland-Werke Ag, 7900 Ulm, De
DE4218587C1 (de) * 1991-09-27 1993-11-04 Wieland Werke Ag Verfahren und vorrichtung zur herstellung eines endabmessungsnahen metallbandes
US5439047A (en) * 1994-02-07 1995-08-08 Eckert; C. Edward Heated nozzle for continuous caster
DE19852275C2 (de) 1998-11-13 2002-10-10 Sms Demag Ag Anlage und Verfahren zum Bandgießen
DE102004015713B4 (de) * 2004-03-29 2006-03-30 Thyssenkrupp Steel Ag Gießdüse zum Vergießen von aus Magnesium oder einer Magnesiumlegierung erschmolzener Schmelze zu gegossenem Band
DE102007022684A1 (de) * 2006-05-16 2007-11-29 Sms Demag Ag Heizeinrichtung zum Vorwärmen eines Flüssigmetall-Transportbehälters
EP1946866A1 (de) * 2007-01-20 2008-07-23 MKM Mansfelder Kupfer und Messing GmbH Verfahren und Vorrichtung zum Vergiessen von NE-Metallschmelzen, insbesondere Kupfer oder Kupferlegierungen
DE102009031236B3 (de) * 2009-06-26 2010-12-02 Salzgitter Flachstahl Gmbh Verfahren und Vorrichtung zum Erzeugen von Stahlbändern mittels Bandgießen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3587718A (en) * 1968-05-22 1971-06-28 Robert K Hopkins Continuous casting apparatus

Also Published As

Publication number Publication date
RU2628590C2 (ru) 2017-08-21
BR112013002475A2 (pt) 2016-05-24
CN103025456A (zh) 2013-04-03
CN103025456B (zh) 2016-04-20
WO2012016922A1 (de) 2012-02-09
EP2598268A1 (de) 2013-06-05
KR20130041927A (ko) 2013-04-25
US20130269905A1 (en) 2013-10-17
DE102010033018A1 (de) 2012-02-02
RU2013108515A (ru) 2014-09-10

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