WO2007071225A1 - Procede et dispositif de creation de feuillards metalliques a chaud, en particulier en acier leger de contruction - Google Patents

Procede et dispositif de creation de feuillards metalliques a chaud, en particulier en acier leger de contruction Download PDF

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Publication number
WO2007071225A1
WO2007071225A1 PCT/DE2006/002082 DE2006002082W WO2007071225A1 WO 2007071225 A1 WO2007071225 A1 WO 2007071225A1 DE 2006002082 W DE2006002082 W DE 2006002082W WO 2007071225 A1 WO2007071225 A1 WO 2007071225A1
Authority
WO
WIPO (PCT)
Prior art keywords
casting
strip
casting belt
gas
belt
Prior art date
Application number
PCT/DE2006/002082
Other languages
German (de)
English (en)
Inventor
Karl-Heinz Spitzer
Hellfried Eichholz
Rune SCHMIDT-JÜRGENSEN
Markus SCHÄPERKÖTTER
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
Priority to EP06818104A priority Critical patent/EP1965938B1/fr
Priority to AU2006329116A priority patent/AU2006329116B2/en
Priority to DE502006007992T priority patent/DE502006007992D1/de
Priority to US12/158,832 priority patent/US20090266503A1/en
Priority to KR1020087018097A priority patent/KR101380698B1/ko
Priority to CN2006800488184A priority patent/CN101346202B/zh
Priority to AT06818104T priority patent/ATE482780T1/de
Publication of WO2007071225A1 publication Critical patent/WO2007071225A1/fr

Links

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
    • 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
    • B22D11/0648—Casting surfaces
    • B22D11/0654—Casting belts
    • 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
    • B22D11/0697—Accessories therefor for casting in a protected atmosphere

Definitions

  • the invention relates to a method for producing metallic hot strips, in particular made of lightweight steel according to the preamble of claim 1, as well as a device according to the preamble of claim 7.
  • melt is fed from a feed vessel via a runner onto a revolving casting belt of a horizontal strip casting plant.
  • the abandoned melt solidifies to a pre-strip with a thickness in the range between 6 - 20 mm.
  • the pre-strip is subjected to a hot rolling process.
  • the object of the invention is to provide a method and a device for producing metallic hot strips, in particular made of lightweight steel, in which the problems described above do not occur. This object is achieved starting from the preamble in conjunction with the characterizing features of claim 1. Advantageous developments and an apparatus for producing Warmbändem are the subject of the other claims.
  • the heat transfer and the contact is reduced between the solidifying to a Vorband strand and the casting belt. This can be achieved with a variety of measures, each of which is effective on its own or in combination.
  • the inventive method is basically suitable for the production of hot strips of a variety of metallic materials, especially for lightweight steel.
  • a first proposal aims to reduce the contact time between casting belt and solidifying strand. This is achieved by locally vibrating the casting belt by means of an electromagnetic system.
  • an electromagnetic system which works similar to a speaker, arranged below the casting belt. Essential for the functioning of the system is that the installation site is located at a location where a sufficiently strong strand shell has already formed.
  • a further proposal is in the direction of reducing the heat transfer,
  • a gas in particular a mixed gas of inert and reducing gas is given in the task area of the melt between the casting trough and casting belt.
  • the reducing gas is hydrogen.
  • the gas is applied over the entire width of the casting belt.
  • the gas volume flow is low and corresponds more to a fog. If the volume flows are too great, the planar formation of the underside of the strand would be disturbed.
  • the discontinued mixed gas causes the surface of the underside of the strand is almost free of scale.
  • a bare surface means lower heat radiation, so that the heat transfer between the solidifying belt and the casting belt is significantly reduced.
  • a third proposal, in which the casting tape is structured, has also proved to be very effective.
  • Preferably longitudinal grooves are embossed in the casting direction.
  • nubs distributed over the casting belt can also be formed.
  • the use of longitudinal beads has the advantage that the manufacturer ment is relatively simple by a smooth belt is pulled through a profiled roller pair.
  • any type of structuring of the casting belt leads to a reduction in the heat transfer between the solidifying strand and the casting belt.
  • the mapping of the beads through the melt leads by the shrinkage occurring during solidification to a local lifting of the strand shell and thus to a reduction of the contact surface. This means a reduction in the heat transfer and the friction between the strand and the casting belt and can be used to increase the process reliability in an in-line production of casting and rolling.
  • the casting speed In an in-line production, the casting speed must ideally be synchronous to the rolling speed. In reality, however, there are often deviations, which, however, may not be too big, because the opening act otherwise tears off. For example, deviations of the synchronous speed of> 0.5 m / s are considered a problem. If these deviations can not be dealt with, a buffer, a so-called looper, must be installed in front of the mill stand.
  • FIG. 1a is a front view of the structuring according to the invention of the casting belt
  • FIG. 1b is a cross-section in the direction A-A in FIG. 1a
  • FIG. 2 shows a longitudinal section of the arrangement according to the invention of an electromagnetic system
  • FIG. 3 shows a longitudinal section of the coating of the underside of the strand
  • FIG. 4 is a plan view of FIG. 3.
  • FIG. 1 a shows a front view of a structure of the casting strip 1 according to the invention. Evident is the lying in the transport direction rear guide roller 2, with the running it in the direction of arrow 3 casting belt 1. Indicated are arranged on the upper side running side boundaries 4, 4 '.
  • FIG. 2 shows a second proposal for reducing the heat transfer, the illustration in longitudinal section showing the application area of a horizontal strip casting plant.
  • the plant has as a main element a melting vessel 6, an inlet 7 with a casting channel 8 adjoining thereto.
  • the melt 9 contained in the melting vessel 6 runs out of the casting channel 8 and is fed onto a continuous casting belt 1.
  • an electromagnetic system 10 is disposed below the casting belt 1. It works on the principle of a loudspeaker and stimulates the casting belt 1 to vibrate. As a result, the contact times of the solidifying melt with the casting belt 1 are reduced. However, the vibrational excitation is only possible if the melt bath on the bottom has formed a sufficiently strong strand shell. Therefore, the electromagnetic system 10 must be located further away from the application area.
  • FIG. 3 shows a third proposed solution. It shows, in the same longitudinal section, the feeding area of a strip caster as in FIG. 2, so that the same reference numerals are used for the same parts.
  • the third proposed solution is characterized in that prior to the task of the melt 9 on the casting belt 1, a blasting with a mixed gas is made.
  • a hollow body 12 is disposed below the runner 8 and above the front guide roller 11.
  • a brush 13 is placed in front of the hollow body 12.
  • the hollow body 12 is connected to a supply line 14 (FIG. 4). After switching on the gas supply flows from the hollow body 12, the mixed gas along the gap between the casting belt 1 and the bottom runner 8 to directly to the task area. This prevents that on the casting belt 1 ⁇ first solidifying strand shell scales. She stays almost naked.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Coating With Molten Metal (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

Le problème à la base de l'invention consiste à améliorer la qualité de feuillards à chaud coulés. Ce problème est résolu selon le procédé par un procédé de production de feuillards métalliques à chaud, en particulier en acier léger de construction, une masse fondue étant délivrée sous gaz protecteur par une goulotte de coulée sur un feuillard périphérique de coulée d'une installation horizontale de coulée de feuillard. La masse fondue se solidifie en un pré-feuillard d'une épaisseur comprise entre 6 et 20 mm et après solidification complète, le pré-feuillard subit une opération de laminage à chaud. Le procédé est caractérisé en ce que le transfert de chaleur ainsi que le contact (surface, temps) entre la barre qui se solidifie pour former un pré-feuillard et le feuillard de coulée est réduit. L'invention concerne également un dispositif en vue de la mise en oevre du procédé.
PCT/DE2006/002082 2005-12-23 2006-11-22 Procede et dispositif de creation de feuillards metalliques a chaud, en particulier en acier leger de contruction WO2007071225A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP06818104A EP1965938B1 (fr) 2005-12-23 2006-11-22 Procede et dispositif de creation de feuillards metalliques a chaud, en particulier en acier leger de contruction
AU2006329116A AU2006329116B2 (en) 2005-12-23 2006-11-22 Method and device for producing hot metallic strip, in particular from lightweight structural steel
DE502006007992T DE502006007992D1 (de) 2005-12-23 2006-11-22 Verfahren und einrichtung zum erzeugen von metallischen warmbändern insbesondere aus leichtbaustahl
US12/158,832 US20090266503A1 (en) 2005-12-23 2006-11-22 Method And Device For Producing Hot Metallic Strip, In Particular From Lightweight Structural Steel
KR1020087018097A KR101380698B1 (ko) 2005-12-23 2006-11-22 경량 구조강으로부터 고온 금속 스트립을 제조하는 방법 및장치
CN2006800488184A CN101346202B (zh) 2005-12-23 2006-11-22 特别是由轻型结构钢生产金属热轧带材的方法和装置
AT06818104T ATE482780T1 (de) 2005-12-23 2006-11-22 Verfahren und einrichtung zum erzeugen von metallischen warmbändern insbesondere aus leichtbaustahl

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005062854.0 2005-12-23
DE102005062854A DE102005062854A1 (de) 2005-12-23 2005-12-23 Verfahren und Einrichtung zum Erzeugen von metallischen Warmbändern insbesondere aus Leichtbaustahl

Publications (1)

Publication Number Publication Date
WO2007071225A1 true WO2007071225A1 (fr) 2007-06-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2006/002082 WO2007071225A1 (fr) 2005-12-23 2006-11-22 Procede et dispositif de creation de feuillards metalliques a chaud, en particulier en acier leger de contruction

Country Status (11)

Country Link
US (1) US20090266503A1 (fr)
EP (1) EP1965938B1 (fr)
KR (1) KR101380698B1 (fr)
CN (1) CN101346202B (fr)
AT (1) ATE482780T1 (fr)
AU (1) AU2006329116B2 (fr)
DE (2) DE102005062854A1 (fr)
RU (1) RU2397042C2 (fr)
UA (1) UA87787C2 (fr)
WO (1) WO2007071225A1 (fr)
ZA (1) ZA200805573B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010102596A1 (fr) * 2009-03-11 2010-09-16 Salzgitter Flachstahl Gmbh Procédé de production d'un feuillard à chaud et feuillard à chaud en acier léger de construction triplex
DE102011056930A1 (de) * 2011-12-22 2013-06-27 Borgwarner Beru Systems Gmbh Elektrische Heizeinrichtung
DE102017105570A1 (de) 2017-03-15 2018-09-20 Salzgitter Flachstahl Gmbh Horizontale Bandgießanlage mit optimiertem Gießband

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8852356B2 (en) 2009-03-11 2014-10-07 Salzgitter Glachstahl GmbH Method for producing a hot rolled strip and hot rolled strip produced from ferritic steel
DE102009012985A1 (de) * 2009-03-12 2010-09-23 Salzgitter Flachstahl Gmbh Gießdüse für eine horizontale Bandgießanlage
DE102009012984B4 (de) 2009-03-12 2013-05-02 Salzgitter Flachstahl Gmbh Gießdüse für eine horizontale Bandgießanlage
DE102009038974B3 (de) 2009-08-21 2010-11-25 Salzgitter Flachstahl Gmbh Verfahren zum Erzeugen von Warmband mittels Bandgießen mit über den Bandquerschnitt einstellbaren Werkstoffeigenschaften
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
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
DE102016116711A1 (de) 2016-09-07 2018-03-08 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung eines Metallbandes auf einer horizontalen Bandgießanlage

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GB2034217A (en) 1978-11-03 1980-06-04 Alusuisse Moulds with Roughened Surface for Casting Metals
GB2160806A (en) * 1984-06-28 1986-01-02 Mannesmann Ag Continuous casting of molten metal
US4582117A (en) 1983-09-21 1986-04-15 Electric Power Research Institute Heat transfer during casting between metallic alloys and a relatively moving substrate
EP0874703B1 (fr) 1995-10-16 2002-05-22 Alcoa Inc. Bandes pour coulee en continu de metaux, leurs procede de fabrication et methode de leurs utilisation

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JP3100798B2 (ja) * 1993-06-08 2000-10-23 新日本製鐵株式会社 急冷金属薄帯製造装置
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Publication number Priority date Publication date Assignee Title
GB2034217A (en) 1978-11-03 1980-06-04 Alusuisse Moulds with Roughened Surface for Casting Metals
US4582117A (en) 1983-09-21 1986-04-15 Electric Power Research Institute Heat transfer during casting between metallic alloys and a relatively moving substrate
GB2160806A (en) * 1984-06-28 1986-01-02 Mannesmann Ag Continuous casting of molten metal
EP0874703B1 (fr) 1995-10-16 2002-05-22 Alcoa Inc. Bandes pour coulee en continu de metaux, leurs procede de fabrication et methode de leurs utilisation

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SPITZER K-H ET AL.: "Direct strip casting", STEEL RESEARCH, vol. 74, no. 11/12, 2003, pages 724 - 731
SPITZER K-H ET AL: "DIRECT STRIP CASTING (DSC) - AN OPTION FOR THE PRODUCTION OF NEW STEEL GRADES", STEEL RESEARCH, DUESSELDORF, DE, vol. 74, no. 11/12, 2003, pages 724 - 731, XP009028744, ISSN: 0177-4832 *
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010102596A1 (fr) * 2009-03-11 2010-09-16 Salzgitter Flachstahl Gmbh Procédé de production d'un feuillard à chaud et feuillard à chaud en acier léger de construction triplex
DE102011056930A1 (de) * 2011-12-22 2013-06-27 Borgwarner Beru Systems Gmbh Elektrische Heizeinrichtung
DE102017105570A1 (de) 2017-03-15 2018-09-20 Salzgitter Flachstahl Gmbh Horizontale Bandgießanlage mit optimiertem Gießband

Also Published As

Publication number Publication date
AU2006329116B2 (en) 2011-07-14
CN101346202B (zh) 2011-12-07
RU2008130392A (ru) 2010-01-27
KR101380698B1 (ko) 2014-04-02
US20090266503A1 (en) 2009-10-29
CN101346202A (zh) 2009-01-14
DE102005062854A1 (de) 2007-07-05
AU2006329116A1 (en) 2007-06-28
DE502006007992D1 (de) 2010-11-11
UA87787C2 (ru) 2009-08-10
EP1965938A1 (fr) 2008-09-10
EP1965938B1 (fr) 2010-09-29
RU2397042C2 (ru) 2010-08-20
KR20080089433A (ko) 2008-10-06
ZA200805573B (en) 2009-04-29
ATE482780T1 (de) 2010-10-15

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