EP0832989B1 - Procédé et appareil pour fabriquer des barres métalliques revêtues, en particulier des bandes métalliques - Google Patents

Procédé et appareil pour fabriquer des barres métalliques revêtues, en particulier des bandes métalliques Download PDF

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Publication number
EP0832989B1
EP0832989B1 EP97116321A EP97116321A EP0832989B1 EP 0832989 B1 EP0832989 B1 EP 0832989B1 EP 97116321 A EP97116321 A EP 97116321A EP 97116321 A EP97116321 A EP 97116321A EP 0832989 B1 EP0832989 B1 EP 0832989B1
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EP
European Patent Office
Prior art keywords
melt
nozzle
metal
crystalliser
strip
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
EP97116321A
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German (de)
English (en)
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EP0832989A3 (fr
EP0832989A2 (fr
Inventor
Fritz-Peter Professor Dr. Pleschiutschnigg
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 Siemag AG
Original Assignee
SMS Demag AG
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Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
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Publication of EP0832989A3 publication Critical patent/EP0832989A3/fr
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Publication of EP0832989B1 publication Critical patent/EP0832989B1/fr
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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
    • B22D11/008—Continuous casting of metals, i.e. casting in indefinite lengths of clad ingots, i.e. the molten metal being cast against a continuous strip forming part of the cast product
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0035—Means for continuously moving substrate through, into or out of the bath
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0036—Crucibles
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0036—Crucibles
    • C23C2/00361—Crucibles characterised by structures including means for immersing or extracting the substrate through confining wall area

Definitions

  • the invention relates to a method for producing metal strands, in which in particular a metal band made of steel through the floor passage device a vessel filled with melt, in particular made of steel, is promoted and after crystallization of the melt the coated metal strand, in particular the coated metal strip, is withdrawn above the vessel and the crystallization carrier, the mother tape, through a floor passage device of the vessel with clear width between the mother tape and the passage device to be led.
  • the invention also relates to a device to carry out the procedure.
  • the method and device deal with the coating of mainly tapes but also profiles and wire, preferably made of Steel.
  • the tape such as Carbon steel is through the bottom a melt vessel filled with a steel melt of the same type Grade such as the band or another steel grade such as stainless Steel, with the melt, controls its temperature brought into contact for coating during a certain time.
  • Such methods and devices are used in the Method and device for producing thin metal strands according to EP 0 311 602 B1.
  • the bottom of the Crystallizer (vessel with melt) against the continuous belt mechanically closed.
  • This mechanical contact can with a Solid matter bodies such as a refractory stone, or steel sliding or rolling can also be produced.
  • DE 44 26 705 C1 describes an inversion casting device with a crystallizer known. This is an uncooled, cleaned metal strip low heat content removed from a metal roll and passed through a molten metal located in the crystallizer. When the metal strip comes into contact, the melt crystallizes on the relatively cool metal profile. The crystallization thickness is depending on the length of the contact time and the temperatures of the Metal profile and the molten metal. With the previously known inversion casting device is a crystallizer close to the ground horizontally encompassing template provided. Lead from the template Nozzles to the interior of the crystallizer.
  • the nozzle orifices are arranged so that the outflowing melt in a flat Angle in the direction of tape withdrawal should strike the carrier tape, around the melt at a relative speed of almost zero to crystallize on the tape.
  • a passage for the metal strip is provided, which through a mechanical seal a leak of the melt from the Crystallizer prevented.
  • DE 195 09 691 C1 is for an inversion casting device with crystallizer, a floor duct for the metal strip in the Crystallizer through a slot-shaped channel with little contact provided such that the molten metal in the region of the mouth of the channel is cooled to a temperature at which Two-phase area, there is a crystal content between 50 and 90%, the metal strip then in the area of the mouth of the channel this cool amount of melt is contacted.
  • the two-phase area should have such a high viscosity that it Function of a self-renewing seal takes over and one Prevent the melt from entering the gap and the floor outlet should.
  • DE 195 09 681 C1 describes a further inversion casting device with a Melt-filled crystallizer known in which the carrier tape to a temperature of about 200 ° C is preheated before the tape is introduced into the melt bath becomes.
  • the carrier tape is preheated by an indirect one Heat exchange in an oxygen-free environment.
  • the carrier tape in a longer channel arranged vertically in the crystallizer passed.
  • the melt In the vicinity of the entry point of the carrier tape from the A meniscus forms in the heat transfer channel into the molten metal in the two-phase area of the melt lies with an isotherm that lies between the liquidus temperature and solidus temperature is.
  • This two-phase area of As with DE 195 09 691 C1, the melt has such a high viscosity that it has Function of a self-renewing seal should take over to spill to prevent the melt from the crystallizer.
  • the document GB-PS also belongs to the aforementioned prior art 992 426.
  • the coating system has an inversion vessel which is filled with molten copper, and through which the Copper wire is pulled through from bottom to top.
  • the inversion vessel shows furthermore the passage opening for the wire and a gap between the wire and the passage opening.
  • the object of the invention is a method and an apparatus which make it independent on the steel grade, i.e. regardless of the training of the two-phase area allow, both friction-free and without precise temperature control Pour without interference in the supercooling area of the melt to be able to.
  • Controlled cooling takes place in the bottom area of the melt vessel, the crystallizer.
  • a melt temperature which is greater than the liquidus temperature of the melt is set at the nozzle outlet of the bottom outlet device.
  • a meniscus in the pure melting phase is formed at the nozzle outlet of the bottom outlet device.
  • a distance is formed between the meniscus of the melt at the nozzle outlet and the start of solidification.
  • the heat dissipation in the area of the floor outlet device is regulated in dependence on the belt speed, bath temperature and gap width so that the meniscus of the pure melt forms free and stationary at the nozzle outlet.
  • the invention also relates to a device for performing the previously described Process.
  • the device comprises a crystallizer filled with melt, in particular made of steel, consisting of steel structure, refractory lining, Metal inlet and with a floor passage device that the passage of a Metal band (crystallization carrier) allowed.
  • a Metal band crystallization carrier
  • FIG. 1 gives an overall view (section) of the coil coating system schematically again.
  • the crystallizer (1) filled with Melt (2) which essentially consists of a steel structure (1.1), a refractory lining (1.2), a steel inlet (1.3) and an emergency outlet (1.4) takes the crystallization carrier, the mother tape (3) over the floor passage device (4) with nozzle (4.1).
  • the melt (2) which has a temperature in the Opening area of the nozzle, nozzle outlet (4.2) larger than T - Liquidus must have, forms a meniscus (5) at the gap between Mother tape (3) and nozzle outlet (4.2), which prevents the Prevents melt. This formation of the meniscus (5) can only then take place trouble-free when the melt temperature above T - is liquidus, i.e.
  • the melt should have an average temperature of around T - Liquidus + 10 ° K.
  • the course of the T - li isotherm (7) is like this adjust that the isotherm the mother tape (3) above the Meniscus (5) reached in point (7.1).
  • a temperature control solidification begins above the nozzle outlet (4.2) i.e. above the meniscus (5) or above the isotherm (7) and of point (7.1) and that in point (8), which is a clear one Distance (8.1) to the meniscus (5).
  • These thermal conditions allow even with temperature fluctuations of the Melt pool, which lead to changes in the distance (8.1) trouble-free, uniform coating profile (9) on the Let the mother tape (3) emerge.
  • the steel belt (3) is driven by pairs of rollers (10) and also a roller guide (11), which is in an inert and temperature controlled Are located vertically through the melt with an upward direction of movement (3.1).
  • a roller guide (11) which is in an inert and temperature controlled Are located vertically through the melt with an upward direction of movement (3.1).
  • the Floor passage area (4) which is equipped with the nozzle, must the heat transfer into the base plate (12) of the crystallizer (1) be controlled in such a way that in the area of the meniscus (5) No solidification at the nozzle outlet (4.2), i.e. a melt temperature prevails, which is larger than T - Liquidus and which does not drop below T - Liquidus during the casting time.
  • Figures 2 and 3 represent the crystallizer (1) with possible Floor passage devices (4) for the mother tape (3). Im Bottom can for free formation of the meniscus (5) at the nozzle exit (4.2) different devices alternatively or in combination are used.
  • a melt temperature is required on the meniscus from T -ist> T- liquidus, around a single-phase Ensure melt state.
  • the distance, gap (13) between the crystallization support, the mother tape (3) and the Nozzle outlet (4.2) should be between 0.2 and 3 mm, on the one hand jamming of the mother tape (3) in the nozzle (4.1) and on the other hand a leakage of the melt (2) from the crystallizer (1) to prevent.
  • the gap (13) at the nozzle outlet (4.2) and at the nozzle inlet (4.3) can be parallel (Fig. 2) but also conical (Fig. 3) his.
  • the conical shape leads to a trouble-free run the mother ligament (3) and free formation of the meniscus (5).
  • the nozzle width (21) when using a belt through adjustable width limits (22) can be selected as required.
  • the gap (13) between the nozzle (4.1) and mother tape (3) can be adjusted by adjusting the width (21) for a given bandwidth (23) optimally over the width below Inclusion of column (13) can be set. Still allowed this device also a change in bandwidth during a casting campaign.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • Continuous Casting (AREA)
  • Nonmetallic Welding Materials (AREA)

Claims (21)

  1. Procédé pour la production de barres métalliques, dans lequel une bande métallique (3) en acier est transportée par le dispositif (4) de passage dans le fond d'un récipient (1) rempli de masse fondue (2) d'acier, et la bande métallique revêtue (31) est évacuée, après cristallisation de la masse fondue, au-dessus du récipient (1) et le support de cristallisation, la bande mère (3), est guidé à travers un dispositif (4) de passage dans le fond du récipient (1) avec un jour (4.3) entre la bande mère (3) et le dispositif (4) de passage, caractérisé par les caractéristiques de procédé suivantes :
    a) réalisation d'un refroidissement contrôlé dans le fond du récipient de masse fondue, le cristalliseur (1),
    b) réglage d'une température de masse fondue à la sortie de l'injecteur (4.2) du dispositif (4) de passage dans le fond qui est supérieure à la température de liquidus de la masse fondue,
    c) réalisation d'un ménisque (5) dans la phase de masse fondue pure à la sortie de l'injecteur (4.2) du dispositif (4) de passage du fond,
    d) réalisation d'une distance (8.1) entre le ménisque (5) de la masse fondue pure à la sortie de l'injecteur et le début de la solidification (8)
    e) réglage de l'évacuation de chaleur dans la zone du dispositif (4) de passage dans le fond en fonction de la vitesse de la bande, de la température du bain et de la largeur de fente (13), de telle manière que le ménisque (5) de la masse fondue pure se forme librement et de manière stationnaire à la sortie de l'injecteur (4.2).
  2. Procédé selon la revendication 1, caractérisé en ce que l'épaisseur finale (9.1) du revêtement est déterminée par le choix de la température du bain au-dessus de la température de liquidus, à un temps de séjour constant prédéfini de la bande mère (3) dans la masse fondue.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'épaisseur finale (9.1) de la bande métallique revêtue est déterminée par le choix de la bande mère (3) entrant dans le bain (2), à un temps de séjour constant prédéfini de la bande mère dans la masse fondue.
  4. Procédé selon au moins l'une quelconque des revendications 1 à 3, caractérisé en ce que la zone du fond du cristalliseur (1) est refroidie au moyen d'un gaz ou d'un liquide.
  5. Dispositif pour la production de barres métalliques, en particulier de bande métallique en acier, à l'aide d'un récipient (1) (cristalliseur) rempli d'une masse fondue, en particulier d'acier, constitué d'une construction en acier (1.1), d'un revêtement réfractaire (1.2), d'une alimentation en métal (1.3) et d'un dispositif (4) de passage dans le fond, qui permet le passage d'une bande métallique (3) (support de cristallisation) pour réaliser le procédé selon les revendications 1 à 4, caractérisé en ce que le revêtement réfractaire (1.2) au niveau du dispositif (4) de passage dans le fond présente une épaisseur définie pour le passage de chaleur contrôlé dans la plaque de fond (12) du cristalliseur (1) et on a disposé entre le revêtement réfractaire (1.2) et la plaque de fond (12) du cristalliseur (1) un bloc métallique (16) avec un refroidissement par un agent et on a prévu un dispositif électromagnétique (17) pour fermer le récipient (1) de masse fondue.
  6. Dispositif selon la revendication 5, caractérisé en ce qu'on a disposé entre le revêtement réfractaire (1.2) et la plaque de fond (12) du cristalliseur (1) un bloc métallique (16) avec un refroidissement par un agent.
  7. Dispositif selon la revendication 5 ou 6, caractérisé en ce qu'on a disposé entre le revêtement réfractaire (1.2) et la plaque de fond (12) du cristalliseur (1) une pompe (17) à métal électromagnétique.
  8. Dispositif selon au moins l'une quelconque des revendications 5 à 7, caractérisé en ce qu'on a disposé entre le revêtement réfractaire (1.2) et la plaque de fond (12) du cristalliseur (1) un préchauffage par induction (17.1) de la bande mère (3).
  9. Dispositif selon au moins l'une quelconque des revendications 5 à 8, caractérisé en ce que la surface extérieure (12.1) de la plaque de fond (12) du cristalliseur (1) est réalisée sous forme d'une plaque de fond (18) plane.
  10. Dispositif selon au moins l'une quelconque des revendications 5 à 9, caractérisé en ce que la surface extérieure (12.1) de la plaque de fond (12) du cristalliseur (1) présente des stries (18.1) pour une meilleure évacuation de chaleur.
  11. Dispositif selon au moins l'une quelconque des revendications 5 à 10, caractérisé en ce que la plaque de fond (12) du cristalliseur (1) est pourvue d'un refroidissement (19) par un agent.
  12. Dispositif selon la revendication 11, caractérisé en ce que le refroidissement (19) par un agent est réalisé sous forme d'un refroidissement indirect ouvert ou fermé.
  13. Dispositif selon au moins l'une quelconque des revendications 5 à 12, caractérisé en ce que la plaque de fond (12) du cristalliseur (1) est équipée d'injecteurs (20) pour des agents de refroidissement (19).
  14. Dispositif selon au moins l'une quelconque des revendications 5 à 13, caractérisé en ce que la largeur de l'injecteur (21) du dispositif (4) de passage dans le fond est réglable librement à l'aide d'éléments de délimitation (22) réglables.
  15. Dispositif selon la revendication 14, caractérisé en ce que les éléments de délimitation (22) réglables sont exécutés avec une forme concave (22.1).
  16. Dispositif selon au moins l'une quelconque des revendications précédentes 5 à 15, caractérisé en ce que la fente (13) de l'injecteur (4.1) à la sortie de l'injecteur (4.2) entre la paroi de l'injecteur et la surface de la bande mère est d'au maximum 5.0 mm.
  17. Dispositif selon la revendication 16, caractérisé en ce que l'injecteur (4.1) s'étend parallèlement de l'entrée de l'injecteur (4.3) jusqu'à la sortie de l'injecteur (4.2).
  18. Dispositif selon la revendication 16, caractérisé en ce que l'injecteur (4.1) à la sortie de celui-ci (4.2) s'étend en s'ouvrant coniquement vers la masse fondue.
  19. Dispositif selon la revendication 16, caractérisé en ce que l'injecteur (4.1) à l'entrée de celui-ci (4.3) s'étend en s'ouvrant coniquement vers l'atmosphère.
  20. Dispositif selon la revendication 16, caractérisé en ce que la fente (13) de l'injecteur (4.1) est de 0,2 mm à 3,0 mm.
  21. Dispositif selon la revendication 6, 12 ou 13, caractérisé en ce que le bloc métallique (16), la plaque de fond (12), les injecteurs (20) sont réalisés avec un dispositif de refroidissement au gaz ou au liquide.
EP97116321A 1996-09-23 1997-09-19 Procédé et appareil pour fabriquer des barres métalliques revêtues, en particulier des bandes métalliques Expired - Lifetime EP0832989B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19638905A DE19638905C1 (de) 1996-09-23 1996-09-23 Verfahren zur Erzeugung von beschichteten Metallsträngen, insbesondere Metallbändern und Beschichtungsanlage
DE19638905 1996-09-23

Publications (3)

Publication Number Publication Date
EP0832989A2 EP0832989A2 (fr) 1998-04-01
EP0832989A3 EP0832989A3 (fr) 1999-02-10
EP0832989B1 true EP0832989B1 (fr) 2004-07-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97116321A Expired - Lifetime EP0832989B1 (fr) 1996-09-23 1997-09-19 Procédé et appareil pour fabriquer des barres métalliques revêtues, en particulier des bandes métalliques

Country Status (4)

Country Link
US (1) US6051278A (fr)
EP (1) EP0832989B1 (fr)
AT (1) ATE271619T1 (fr)
DE (2) DE19638905C1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6037011A (en) * 1997-11-04 2000-03-14 Inland Steel Company Hot dip coating employing a plug of chilled coating metal
DE19902066A1 (de) * 1999-01-20 2000-08-03 Sms Demag Ag Verfahren und Vorrichtung zur Erzeugung von beschichteten Strängen aus Metall, insbesondere von Bändern aus Stahl
DE10201175B4 (de) * 2001-02-27 2005-07-14 Sms Demag Ag Verfahren und Vorrichtung zum Beschichten eines Bandes aus Stahl, insbesondere aus Kohlenstoffstahl, mit ankristallisierbaren Anteilen aus Stahlschmelze

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB992426A (en) * 1962-04-27 1965-05-19 Gen Electric Improvements in method and apparatus for accreting molten material
US3470939A (en) * 1965-11-08 1969-10-07 Texas Instruments Inc Continuous chill casting of cladding on a continuous support
US3483030A (en) * 1966-12-19 1969-12-09 Texas Instruments Inc Chill cladding method and apparatus
US3977842A (en) * 1968-08-27 1976-08-31 National Steel Corporation Product and process
US3709722A (en) * 1970-04-06 1973-01-09 Kennecott Copper Corp Process for accreting molten copper on a moving core member
US3995679A (en) * 1974-12-20 1976-12-07 General Electric Company Continuous casting apparatus, and a method of casting
FR2561139B1 (fr) * 1984-03-16 1986-09-12 Comp Generale Electricite Dispositif pour deposer une couche de silicium sur un ruban de carbone
EP0311602B1 (fr) * 1986-05-27 1991-07-24 MANNESMANN Aktiengesellschaft Procede pour fabriquer des barres metalliques minces
DE4426705C1 (de) * 1994-07-20 1995-09-07 Mannesmann Ag Inversionsgießeinrichtung mit Kristallisator
DE19509681C1 (de) * 1995-03-07 1996-05-02 Mannesmann Ag Verfahren und Anlage zur kontinuierlichen Erzeugung bandförmiger Bleche
DE19509691C1 (de) * 1995-03-08 1996-05-09 Mannesmann Ag Bodendurchführung eines Inversionsgießgefäßes

Also Published As

Publication number Publication date
DE19638905C1 (de) 1998-01-02
EP0832989A3 (fr) 1999-02-10
DE59711785D1 (de) 2004-08-26
ATE271619T1 (de) 2004-08-15
US6051278A (en) 2000-04-18
EP0832989A2 (fr) 1998-04-01

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