EP3122492B1 - Coulée semi-continue d'une barre en acier - Google Patents

Coulée semi-continue d'une barre en acier Download PDF

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Publication number
EP3122492B1
EP3122492B1 EP15702712.9A EP15702712A EP3122492B1 EP 3122492 B1 EP3122492 B1 EP 3122492B1 EP 15702712 A EP15702712 A EP 15702712A EP 3122492 B1 EP3122492 B1 EP 3122492B1
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EP
European Patent Office
Prior art keywords
strand
continuous casting
cooling
casting machine
cooling zone
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
EP15702712.9A
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German (de)
English (en)
Other versions
EP3122492B2 (fr
EP3122492A2 (fr
Inventor
Christian Brugger
Susanne Hahn
Jens Kluge
Hans-Peter KOGLER
Johann Poeppl
Guoxin Shan
Susanne Tanzer
Heinrich Thoene
Franz Wimmer
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Primetals Technologies Austria GmbH
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Primetals Technologies Austria GmbH
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Application filed by Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
Priority to EP17173954.3A priority Critical patent/EP3251773B1/fr
Publication of EP3122492A2 publication Critical patent/EP3122492A2/fr
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Publication of EP3122492B1 publication Critical patent/EP3122492B1/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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • 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
    • B22D11/055—Cooling the moulds
    • 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
    • B22D11/08—Accessories for starting the casting procedure
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1213—Accessories for subsequent treating or working cast stock in situ for heating or insulating strands
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1281—Vertical removing
    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/20—Controlling or regulating processes or operations for removing cast stock
    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
    • B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling

Definitions

  • the present invention relates to a method for the semi-continuous continuous casting of a strand, preferably a billet, made of steel in a continuous casting machine and a suitable continuous casting machine.
  • the continuous casting machine used is divided into three parts.
  • the chilled continuous casting mold for primary cooling of the strand which is typically made of copper or a copper alloy, is followed by a strand guide for supporting and guiding the strand with a secondary cooling, typically comprising a plurality of single-material (mostly so-called water-only nozzles) and / or multi-substance nozzles (mostly so-called. airmist nozzles) to cool the partially solidified strand shell and a tertiary cooling zone to further cool the strand.
  • a secondary cooling typically comprising a plurality of single-material (mostly so-called water-only nozzles) and / or multi-substance nozzles (mostly so-called. airmist nozzles) to cool the partially solidified strand shell and a tertiary cooling zone to further cool the strand.
  • the continuous casting machine is designed as a vertical continuous casting machine with a vertical mold, a vertical strand guide and a vertical Tertiärkühlzone.
  • liquid steel is produced (typically from a metallurgical vessel, such as a ladle or pouring spreader) into the cold-run through mold, the liquid steel having the cold strand forming a solidified strand and a semi-solid strand following it (ie, a solidified strand shell and a liquid core) formed.
  • a metallurgical vessel such as a ladle or pouring spreader
  • the flow from the metallurgical vessel into the continuous casting mold can be adjusted, for example, via a slide closure or a plug drive.
  • the partially solidified strand is drawn out of the continuous casting mold, wherein the casting level in the mold, which is adjusted by the inflow of liquid steel into the mold and the extraction of the partially solidified strand by driven strand guide rollers, is kept approximately constant.
  • the partially solidified strand is supported by the continuous casting mold in the strand guide, guided and further cooled by the secondary cooling.
  • the secondary cooling has a plurality of cooling nozzles; at slow casting speeds, however, cooling by radiation may already be sufficient to form a viable strand shell.
  • the cooling intensities in the primary and secondary cooling are adjusted depending on the pull-out speed so that the shell of the partially solidified strand can withstand the maximum occurring ferrostatic pressure in the continuous casting machine.
  • the casting process is terminated, for example by closing the metallurgical vessel.
  • a strand end of the strand which is typically not completely solidified, forms.
  • the strand end is now at least as far removed from the continuous casting mold, that it comes to rest in the area of secondary cooling or tertiary cooling of the continuous casting machine.
  • the secondary cooling is terminated.
  • the partially solidified strand is now - compared to continuous casting - slow, controlled or regulated in the Tertiary cooling zone of the continuous casting machine cooled to complete solidification.
  • the cooling takes place in a controlled manner - decreasing more in the foot area (ie in the area of the strand start) of the strand and towards the strand head, ie in the region of the strand end). This causes a bottom-up solidification front in the center area.
  • a globular or dendritic microstructure appears with only extremely small segregations and porosities.
  • dendritic solidification the dendrites in the strand center can not grow together, thus avoiding the thread porosity in the strand center.
  • the solidified strand is discharged from the continuous casting machine.
  • the cooling of the partially solidified strand in the tertiary cooling zone is either controlled or regulated.
  • the setpoint value for the cooling may be the surface temperature of the strand, or preferably a microstructure composition in the center of the strand calculated in real time in a 2- or 3-dimensional model including the heat equation for the strand and optionally taking into account the processes during structural transformation be used.
  • the cooling and the structure formation in the strand can be set very accurately.
  • the strand is cooled primarily by thermal radiation and possibly by convection; spray cooling is typically not required.
  • any necessary annealing treatments of the strand for the purpose of stress relief and further structural improvement can already be carried out in the tertiary cooling zone of the continuous casting machine.
  • the cooling at the start of the strand can be set more strongly than at the end of the strand without additional energy. By targeted heating of the strand, this can be ensured with additional energy. Finally, a - possibly only locally - present - too slow cooling of the strand can be remedied by a surface cooling of the strand.
  • the partially solidified strand preferably its lateral surface, in the tertiary cooling zone is heated by a, preferably inductive, heating device.
  • the strand can also be heated by burners.
  • a locally too slow cooling can be prevented when the partially solidified strand is cooled in the tertiary cooling zone by a, preferably movable, cooling device.
  • the heating device can be moved in the extension direction of the continuous casting machine. As a result, the temperature of the strand can only be influenced by a single heating device without the need for distributed devices.
  • the partially solidified strand is protected in the tertiary cooling zone by a thermal insulation against rapid cooling. It is advantageous if the heat insulation is preheated before the casting start.
  • a particularly effective heat insulation which also promotes the degassing of the not yet solidified melt and also before Scaling protects, is to keep the strand in a vacuum or in an atmosphere of inert gas.
  • the insulation effect is preset either statically or controlled or regulated during operation.
  • the setting may e.g. done by swiveling insulation lamellae.
  • the insulation lamellae can be adjusted over the length of the strand to different, but static, swivel angles.
  • the swivel angle can also be adjusted dynamically depending on the production program during the cooling phase. For example. For example, the swivel angles at the bottom - i. in the area of the strand beginning - are set larger than above, whereby the strand area is cooled more slowly than the strand start area.
  • the cooled continuous casting mold preferably the continuous casting mold and the secondary cooling zone
  • the tertiary cooling zone for example lifted off
  • the separated components transverse to the extension direction of the continuous casting machine to another casting station ie to a further Tertiärkühlzone
  • another strand may be poured, during which time the previously produced strand in the tertiary cooling zone is slowly cooled.
  • the strand end is heated by a heating device, in particular an inductive heating device, an electric arc furnace, a plasma heater or by the burning of exothermic covering powder.
  • a heating device in particular an inductive heating device, an electric arc furnace, a plasma heater or by the burning of exothermic covering powder.
  • a stirring device such as a stirring coil is advantageous. This is conveniently movable along the string axis.
  • the semi-solidified strand in the tertiary cooling zone may be alternately rotated clockwise and counterclockwise about its own axis. By reversing the direction of a particularly intimate mixing is ensured inside the strand.
  • the cast strand obtains a stable shell as quickly as possible and thereby the length of the secondary cooling can be kept as short as possible, it is advantageous if the strand has a round cross-section.
  • a similar effect can also be achieved with a strand having a three-round, four-round, etc. cross section.
  • the continuous casting machine may also have a statically presettable or dynamically (i.e., during operation) controlled or adjustable heat insulation.
  • the lateral surface of the strand can be heated, whereby the cooling (and thus the microstructure formation) in the center region of the partially solidified strand in the tertiary cooling zone of the continuous casting machine can be adjusted very accurately.
  • the tertiary cooling zone has a, in particular statically adjustable or dynamically controlled or regulated adjustable, heat insulation.
  • the continuous casting mold, the secondary and the tertiary cooling zone are arranged in one row (so-called in-line).
  • the productivity of the semi-continuous continuous casting machine is substantially increased if the continuous casting machine has a plurality of transverse cooling zones offset transversely to the drawing machine direction, wherein the machine head of the continuous casting machine, comprising the continuous casting mold and preferably the secondary cooling zone, is connectable and separable with a tertiary cooling zone and at least the Machine head is movable transversely to the extension direction.
  • a single machine head can serve multiple tertiary cooling zones so that high throughput is achieved despite the slow cooling of the partially solidified strands.
  • the machine head is moved to another tertiary cooling zone during which the strand is stationary.
  • the controlled or controlled, slow cooling in the center region of the strand is not disturbed.
  • the strand possibly with the Tertiärksselung be moved away from the machine head.
  • the adjustable heat insulation at least one - advantageously several - insulation panel (also called lamella), that in the extension direction of the continuous casting machine is displaced or pivotable to the extension direction.
  • the cooling rate of the partially solidified strand can be passive, i. without additional input of energy.
  • Multiple strands of small size can be created simultaneously if the machine head of the continuous casting machine has a plurality of cooled continuous molds and a plurality of strand guides with secondary cooling zones arranged behind them.
  • a simple and robust continuous casting machine has a strand withdrawal carriage for pulling out the strand, wherein the strand withdrawal carriage in the extension direction, for example by spindle, rack or cylinder drives, is movable.
  • the strand beginning is supported by the cold strand on the strand withdrawal trolley.
  • the strand withdrawal carriage is connected to the machine head, wherein the strand withdrawal carriage with the machine head is movable transversely to the extension direction.
  • the cast strand after the pouring end e.g. parked on a pedestal on the hall floor and moved the machine head with the pullout trolley to another Tertiärksselung.
  • the slow cooling of the parked strand may e.g. be ensured by a pulled over the strand thermal hood.
  • the machine head is stationary and the cast strand is movable transversely to the extension direction.
  • the cast strand is e.g. parked on a pedestal, wherein the pedestal can be moved together with the strand to another tertiary cooling zone.
  • Fig. 1a is poured from a pan distributor not shown separately liquid steel via a dip tube in a cooled continuous casting mold 2, wherein the casting mold 2, the continuous casting mold 2 is closed fluid-tight by the cold strand 6 during casting start of the continuous casting machine, so that in the mold a casting M (also called meniscus) adjusts.
  • a solidified strand beginning 1a is formed (see Fig. 1c ) out.
  • the partially solidified strand 1b following the solidified strand beginning 1a is not solidified in the opposite direction to the drawing direction A, but has only a thin strand shell and a liquid core.
  • the strand 1 is pulled out of the mold 2.
  • the continuous casting machine on a Strangabzugswagen 11, the cold strand 6 itself, a threaded spindle 12, a Threaded nut 13 and a motor 14 for moving the strand extractor carriage 11 in the extension direction A includes.
  • the motor 14 is connected via a gear and the threaded spindle 12 with the threaded nut 13 and has a drive-through for the threaded spindle 12.
  • In 1b was the strand 1 already pulled out of the continuous mold 2, wherein the strand 1 in the mold 2 subsequent strand guide 3 is supported by a plurality of strand guide rollers 3a, guided and cooled by a plurality of cooling nozzles 4a in the secondary cooling 4.
  • the strand 1 forms a stable strand shell, which can withstand the ferrostatic pressure. Thus, a breakthrough of the strand 1 is prevented.
  • Fig. 1c the strand beginning 1a has already passed the secondary cooling 3 of the continuous casting machine and has entered the tertiary cooling zone 5.
  • the strand 1 is further controlled slowly or cooled controlled so that in the center of the partially solidified strand 1b, the solidification takes place with an upward direction.
  • the tertiary cooling zone 5 has a thermal insulation 9 and an in Fig. 1f shown heater 7.
  • Fig. 1f shown heater 7.
  • thermal insulation 9 for a Tertiärksselung, wherein the atmosphere between the strand 1 and the heat hood 9 by a vacuum pump (here a jet pump 15) is evacuated.
  • a vacuum pump here a jet pump 15
  • a pressure connection of the jet pump 15 is connected to a compressed air network and the suction connection of the jet pump 15 to the space inside the thermal insulation 9.
  • This measure also prevents oxidation, ie scaling, of the strand 1;
  • the not yet solidified melt in the train is degassed by the vacuum treatment.
  • the heat insulation 9 has a plurality of insulation panels 9a, which are independent of each other closed (opening angle 0 °), opened (opening angle 90 °) or partially opened (90 °> opening angle> 0 °).
  • Fig. 1d the casting in the continuous casting machine was finished so that a strand end 1c is formed.
  • the casting mirror M is located below the pouring mirror shown in dashed lines according to the process steps 1a-1c.
  • the Fig. 1e shows the situation after the strand end 1c of the strand 1 has passed the secondary cooling zone 3, the secondary cooling has ended and the strand end 1c is flush with the upper end of the tertiary cooling zone 5.
  • the slow, controlled or controlled cooling of the partially solidified strand 1b is ensured by the heat insulation 9 and the heating of the strand by the movable in the extension direction A heater 7 (see Fig. 1f ).
  • the strand end 1c is heated by an inductive head heater 10, so that too rapid cooling of the strand end 1c is prevented.
  • FIGS. 1a ... 1f a round steel strand 1 with a diameter of 1200 mm and a length of 10 m was produced.
  • the pull-out speed of the strand 1 from the continuous casting mold 2 is 0.25 m / min. Due to the thermal insulation 9 and the reheating of the strand 1 by the movable heater 7, the complete solidification of the strand 1 is reached only after 13 h.
  • Fig. 2a is a first alternative embodiment of the tertiary cooling zone 5 of Fig. 1 shown.
  • the space between the strand 1 and the thermal insulation 9 is evacuated by a jet pump 15, whereby a good thermal insulation and a slow cooling is achieved.
  • the surface of the strand 1 is protected from scaling and degassed the residual melt.
  • the jet pump is simple and wear-free; its pressure connection is connected to a compressed air connection P and its suction connection to the space to be evacuated within the tertiary cooling zone.
  • the blowing off can take place against ambient pressure U.
  • the inductive head heater 10 is advantageous over plasma heating, since the magnetic field also acts through the thermal insulation of the strand end 1c.
  • the Fig. 2b shows a second alternative of the tertiary cooling zone 5 of Fig. 1 ,
  • the insulation lamellae 9a of the thermal insulation 9 are pivotable relative to the extension direction, so that the air exchange between the ambient air and the strand 1 in the interior of the tertiary cooling zone 9 is adjustable.
  • the insulation lamellae 9a on the right side of the strand 1 were closed and shown open on the left side by 10 ° to the extension direction A.
  • the adjustment of the slats 9a can be done either manually or by actuators.
  • the Fig. 3 schematically shows the time course of the travel s of the inductive heating device 7 for Reheating the lateral surface of the strand 1.
  • the heater 7 is pulled through in the upper part of the strand 1 and shown in dashed lines in the lower area. Since the solidification front shifts during the cooling from bottom to top (ie, from strand start 1a to strand end 1c), also the travel s of the heating device 7 decreases over time.
  • a plurality of heating devices eg burners
  • a plurality of heating devices eg burners
  • the Fig. 4 shows the temperatures in ° C of the according to Fig. 1 produced strand 1 in a sectional view 3h after casting start (part 1), 8.3h after casting start (part 2) and solidification of the strand 1, about 13h after casting start (part 3).
  • the time course of the temperatures of the strand 1 at different positions on the surface and in the center of the strand are in Fig. 5 shown. It follows that the casting of the strand and thus also the primary and the secondary cooling is terminated 46 minutes after the casting start and then the strand 1 is cooled controlled only by the Tertiärkühlung 5.
  • FIGS. 6a . 6b a vertical strand casting machine according to the invention is shown in two views.
  • the liquid steel is poured from a pan 30 via a shadow tube in the casting manifold 31, then the melt flows through a not shown immersion tube ( SEN ) in the continuous casting mold 2 a. Due to the primary cooling in the mold 2, a partially solid strand 1 forms with a stable strand shell.
  • the melt is further influenced by an optional stirring device 32.
  • the strand 1 is supported in the strand guide 3, guided and further cooled in the secondary cooling zone 4.
  • At least the continuous casting mold 2, the stirring coil 32, the strand guide 3 with the secondary cooling zone 4, and optionally also the tertiary cooling zone 5, are on a casting trolley 33 on the casting platform G movable.
  • the strand 1 with the cold strand 6 is pulled out of the continuous casting mold 2 via the strand withdrawal carriage 11.
  • the Strangabzugswagen 11 is driven by four threaded spindles 12 and guided by additional guide rails 34, wherein a motor via a gear and the threaded spindle 12 is connected to the threaded nut 13.
  • the casting trolley 33 can be moved transversely to the extension direction A to a further casting station, since the casting of the partially solidified strand, ie without the Tertiärksselung the strand 1, much less time needed as the tertiary cooling of strand 1 until its solidification.
  • the strand 1 is slowly cooled by the thermal insulation 9 and possibly by a heater, not shown here, so that the solidification takes place in the center of the strand with an upwardly oriented solidification front.
  • FIG. 7 A more detailed representation of the machine head of the continuous casting machine from the Fig. 6a . 6b is in Fig. 7 shown.
  • the 8a, 8b schematically show an embodiment for discharging the solidified strand 1 from the Tertiärksselzone.
  • the strand 1 is laterally supported by two brackets 38, so that on the continuous casting machine also very different diameters (see plan of Fig. 8a ) can be shed.
  • Fig. 8a the strand 1 has already been swung out with respect to the vertical and rests against the brackets 38.
  • Fig. 8b the strand 1 is placed over the pivot drive 39 on a roller table 37, where it can be removed in the direction of the arrow.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Claims (17)

  1. Procédé de coulée semi-continue d'une barre (1) en acier dans une machine de coulée continue, la machine de coulée continue comprenant
    - une lingotière à base ouverte (2) refroidie pour le refroidissement primaire de la barre (1), avec ensuite
    - un guidage de barre (3) pour soutenir et guider la barre (1), avec un refroidissement secondaire (4) pour le refroidissement de la barre (1), et ensuite encore
    - un refroidissement tertiaire (5) pour poursuivre le refroidissement de la barre (1), comprenant les étapes de procédé suivantes :
    - démarrage de la coulée par la machine de coulée continue, de l'acier liquide étant coulé dans la lingotière à base ouverte (2) fermée par une fausse barre (6) et l'acier liquide formant avec la fausse barre une tête de barre (1a) entièrement solidifiée et ensuite une barre (1b) partiellement solidifiée ;
    - retrait de la barre (1b) partiellement solidifiée hors de la lingotière à base ouverte (2) ;
    - soutien et guidage de la barre (1b) partiellement solidifiée dans le guidage de barre (3), la barre (1b) partiellement solidifiée étant refroidie par le refroidissement secondaire (4) ;
    - fin de la coulée par la machine de coulée continue, la coulée d'acier liquide dans la lingotière à base ouverte (2) étant terminée et une queue de barre (1c) se formant ;
    - retrait de la queue de barre (1c hors de la lingotière à base ouverte (2) ;
    - arrêt du retrait, de sorte que la queue de barre (1c) se trouve à l'extérieur de la lingotière à base ouverte (2) ;
    - arrêt du refroidissement secondaire (4) ;
    - refroidissement contrôlé ou régulé de la barre (1b) partiellement solidifiée jusqu'à la solidification totale de la barre (1) dans la zone de refroidissement tertiaire (5) de la machine de coulée continue, le refroidissement s'effectuant plus intensément au niveau de la tête de barre (1a) et de manière décroissante jusqu'à la queue de barre (1c) ;
    - extraction de la barre (1) hors de la machine de coulée continue.
  2. Procédé selon la revendication 1, caractérisé en ce que le refroidissement de la barre (1b) partiellement solidifiée dans la zone de refroidissement tertiaire (5) est réglé par l'influence d'au moins un moyen du groupe :
    - isolation thermique de la barre (1, 1b),
    - chauffage de la barre (1, 1b),
    - refroidissement superficiel de la barre (1, 1b).
  3. Procédé selon la revendication 2, caractérisé en ce que la barre (1b) partiellement solidifiée est chauffée grâce à un dispositif de chauffage (7) dans la zone de refroidissement tertiaire (5).
  4. Procédé selon la revendication 3, caractérisé en ce que le dispositif de chauffage (7) peut être déplacé dans la direction de retrait (A) de la machine de coulée continue.
  5. Procédé selon l'une des revendications 2 à 4, caractérisé en ce que la barre (1b) partiellement solidifiée est protégée d'un refroidissement trop rapide par une isolation thermique (9) dans la zone de refroidissement tertiaire (5).
  6. Procédé selon la revendication 5, caractérisé en ce que l'effet isolant de l'isolation thermique (9) est ajusté.
  7. Procédé selon l'une des revendications 2 à 6, caractérisé en ce que la queue de barre (1c) est réchauffée par un chauffage de tête (10).
  8. Procédé selon l'une des revendications 2 à 7, caractérisé en ce que la surface de la barre (1b) partiellement solidifiée est refroidie par un dispositif de refroidissement (4a) dans la zone de refroidissement tertiaire (5).
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que la barre (1b) partiellement solidifiée est brassée par un brasseur électromagnétique (32) fixe ou déplaçable dans la direction de retrait (A) dans la zone de refroidissement tertiaire (5), ou la barre (1b) partiellement solidifiée est tournée alternativement dans le sens horaire et dans le sens anti-horaire autour de son propre axe dans la zone de refroidissement tertiaire (5).
  10. Machine de coulée continue pour l'exécution du procédé selon l'une des revendications 1 à 9, comprenant
    - un dispositif pour le retrait d'une barre (1) hors d'une lingotière à base ouverte (2) et un dispositif (37, 38, 39) pour l'extraction de la barre (1) hors de la machine de coulée continue,
    - la lingotière à base ouverte (2) refroidie pour le refroidissement primaire de la barre (1), et ensuite
    - un guidage de barre (3) pour le soutien et le guidage de la barre (1), avec une zone de refroidissement secondaire (4) pour le refroidissement de la barre (1), et ensuite encore
    - une zone de refroidissement tertiaire (5) pour poursuivre le refroidissement de la barre (1), caractérisée en ce que la zone de refroidissement tertiaire (5) comporte un dispositif de chauffage (8) pour le refroidissement contrôlé ou régulé de la barre (1b) partiellement solidifiée.
  11. Machine de coulée continue selon la revendication 10, caractérisée en ce que la zone de refroidissement tertiaire (5) comporte une isolation thermique (9) à réglage statique ou à réglage contrôlé ou régulé.
  12. Machine de coulée continue selon l'une des revendications 10 à 11, caractérisée par plusieurs zones de refroidissement tertiaire (5) décalées perpendiculairement à la direction de retrait (A) de la machine de coulée continue, la tête de la machine de coulée continue, y compris la lingotière à base ouverte (2) et la zone de refroidissement secondaire (4), pouvant être reliées à une zone de refroidissement tertiaire (5) et séparées de celle-ci.
  13. Machine de coulée continue selon la revendication 12, caractérisée en ce que plusieurs zones de refroidissement tertiaire (5) sont disposées en arc ou linéairement les unes derrière les autres.
  14. Machine de coulée continue selon l'une des revendications 11 à 13, caractérisée en ce que l'isolation thermique réglable (9) comporte au moins un panneau isolant (9a) qui peut être déplacé dans la direction de retrait (A) ou pivoté par rapport à la direction de retrait (A).
  15. Machine de coulée continue selon l'une des revendications 11 à 14, caractérisée en ce que la machine de coulée continue comprend un chariot d'enlèvement de barre (11) pour le retrait de la barre (1), le chariot d'enlèvement de barre (11) pouvant être déplacé dans la direction de retrait (A).
  16. Machine de coulée continue selon les revendications 11 et 15, caractérisée en ce que le chariot d'enlèvement de barre (11) est relié à la tête de machine et les deux peuvent être déplacés transversalement à la direction de retrait (A).
  17. Machine de coulée continue selon l'une des revendications 11 à 15, caractérisée en ce que la tête de machine est fixe et la barre (1) peut être déplacée transversalement à la direction de retrait (A).
EP15702712.9A 2014-03-27 2015-01-27 Coulée semi-continue d'une barre en acier Not-in-force EP3122492B2 (fr)

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EP (2) EP3251773B1 (fr)
CN (1) CN106457371B (fr)
AT (3) AT515731B1 (fr)
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WO (1) WO2015079071A2 (fr)

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EP3437756A1 (fr) * 2017-08-04 2019-02-06 Primetals Technologies Austria GmbH Coulée continue d'une barre métallique
EP3437757A1 (fr) * 2017-08-04 2019-02-06 Primetals Technologies Austria GmbH Coulée continue d'une barre métallique

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EP3437759B1 (fr) * 2017-08-04 2022-10-12 Primetals Technologies Austria GmbH Coulée continue d'une barre métallique
CN108620563A (zh) * 2018-07-06 2018-10-09 广东坚美铝型材厂（集团）有限公司 一种铸棒机
KR102563855B1 (ko) * 2018-11-28 2023-08-03 프리메탈스 테크놀로지스 오스트리아 게엠베하 금속 스트랜드의 연속 주조
KR102586739B1 (ko) * 2018-11-28 2023-10-06 프리메탈스 테크놀로지스 오스트리아 게엠베하 금속 스트랜드의 연속 주조
CN110369686A (zh) * 2019-07-03 2019-10-25 西安理工大学 一种铸铁水平连铸三次喷冷装置
BR112022010172A2 (pt) 2019-12-20 2022-08-09 Novelis Inc Tamanho final de grão reduzido de material forjado não cristalizado produzido através da via de refrigeração direta (dc)
EP3885060A1 (fr) * 2020-03-25 2021-09-29 Primetals Technologies Austria GmbH Système de coulée en continu et procédé de fonctionnement du système de coulée en continu
CN111468691B (zh) * 2020-06-12 2021-08-20 江苏隆达超合金股份有限公司 一种铜镍合金半连续圆铸锭引锭头
AT525111A1 (de) 2021-06-08 2022-12-15 Primetals Technologies Austria GmbH Rühren bei gegossenen Vorblöcken mit oszillierendem Strangrührer
CN113695545B (zh) * 2021-08-18 2023-03-24 中天钢铁集团有限公司 一种满足生产大规格线材冷镦钢的小方坯连铸方法
CN114309510B (zh) * 2021-11-24 2022-09-09 武汉西赛冶金工程有限责任公司 机械搅拌的金属连铸工艺及机械搅拌装置
CN114905016B (zh) * 2022-06-13 2024-01-12 武汉大西洋连铸设备工程有限责任公司 一种应用于铸坯凝固过程中的机械旋转搅拌装置

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EP3437757A1 (fr) * 2017-08-04 2019-02-06 Primetals Technologies Austria GmbH Coulée continue d'une barre métallique

Also Published As

Publication number Publication date
EP3122492B2 (fr) 2020-06-10
AT515731A3 (de) 2017-01-15
CN106457371A (zh) 2017-02-22
US10307819B2 (en) 2019-06-04
RU2675880C2 (ru) 2018-12-25
US20170216908A1 (en) 2017-08-03
AT515731A2 (de) 2015-11-15
RU2016141648A (ru) 2018-04-27
WO2015079071A3 (fr) 2015-07-30
AT15215U1 (de) 2017-03-15
CN106457371B (zh) 2019-05-07
EP3251773B1 (fr) 2020-05-06
WO2015079071A2 (fr) 2015-06-04
RU2016141648A3 (fr) 2018-06-29
AT15223U1 (de) 2017-03-15
AT515731B1 (de) 2018-08-15
EP3122492A2 (fr) 2017-02-01
EP3251773A1 (fr) 2017-12-06

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