EP3251773B1 - Coulée semi-continue d'une barre d'acier - Google Patents

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

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Publication number
EP3251773B1
EP3251773B1 EP17173954.3A EP17173954A EP3251773B1 EP 3251773 B1 EP3251773 B1 EP 3251773B1 EP 17173954 A EP17173954 A EP 17173954A EP 3251773 B1 EP3251773 B1 EP 3251773B1
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EP
European Patent Office
Prior art keywords
strand
cooling
continuous casting
casting machine
tertiary
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
EP17173954.3A
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German (de)
English (en)
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EP3251773A1 (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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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
    • B22D11/12—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
    • B22D11/041—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
    • B22D11/04—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 casting of a strand, preferably a bloom, from steel in a continuous casting machine and a continuous casting machine suitable therefor.
  • the continuous casting machine has a continuous mold, a device for pulling a strand out of the continuous mold and a device for conveying the strand out of the continuous casting machine in the form of a cast part elevator.
  • the continuous casting machine has a cooled continuous mold, a strand guide with secondary cooling and a device for pulling a strand out of the continuous mold and a device for conveying the strand out of the continuous casting machine. After undressing of the strand can be cooled further in half-shells.
  • the continuous casting machine used is divided into three parts.
  • the cooled continuous mold which is typically made of copper or a copper alloy, for primary cooling of the strand is followed by a strand guide for supporting and guiding the strand with secondary cooling, typically comprising a plurality of single-substance (mostly so-called water-only nozzles) and / or multi-substance nozzles (mostly so-called. airmist nozzles), for cooling the partially solidified strand shell, and a tertiary cooling zone for further cooling 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 tertiary cooling zone.
  • liquid steel typically from a metallurgical vessel, such as a ladle or a pouring distributor
  • a metallurgical vessel such as a ladle or a pouring distributor
  • the liquid steel with the cold strand having a solidified beginning of the strand and one forms the partially solidified strand following the strand start (ie a solidified strand shell and a liquid core).
  • the flow from the metallurgical vessel into the continuous mold can be set, for example, using a slide valve or a plug drive.
  • the partially solidified strand is then pulled out of the continuous mold, the casting level in the mold, which is established by the inflow of liquid steel into the mold and the extraction of the partially solidified strand by driven strand guide rollers, being kept approximately constant.
  • the partially solidified strand is supported 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 can already be sufficient to form a stable 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 withstands the maximum ferrostatic pressure that occurs in the continuous casting machine.
  • the casting process is ended, for example by closing the metallurgical vessel.
  • a strand end of the strand which is typically not completely solidified, is formed.
  • the end of the strand is now pulled out of the continuous mold at least to such an extent that it comes to rest in the area of the secondary cooling or the tertiary cooling of the continuous casting machine.
  • secondary cooling zone secondary cooling is ended.
  • the partially solidified strand is now slowly, controlled or regulated in the tertiary cooling zone of the continuous casting machine until completely solidified, in comparison to continuous casting.
  • the cooling takes place in a controlled manner - decreasing more in the foot area (ie in the area of the start of the strand) and towards the end of the strand ie in the area of the end of the strand.
  • the center of the partially solidified strand there is either a globular or dendritic structure with only extremely low segregations and porosities. With dendritic solidification, the dendrites in the strand center cannot grow together, which avoids the thread porosity in the strand center. Finally, the solidified strand is removed from the continuous casting machine.
  • the cooling of the partially solidified strand in the tertiary cooling zone is either controlled or regulated.
  • the target temperature for the cooling can be the surface temperature of the strand, or preferably a - in a 2 or 3-dimensional model containing the heat conduction equation for the strand and, if necessary, taking into account the processes involved in structural transformation - a structure composition calculated in real time in the center of the strand be used. This allows the cooling and the microstructure formation in the strand to be set very precisely.
  • the strand is cooled primarily by heat radiation and possibly by convection; spray cooling is typically not required.
  • the cooling at the start of the strand can be adjusted more than at the end of the strand without additional energy. Through targeted heating of the line, this can be ensured with additional energy. Finally, a slow cooling of the strand, possibly only locally, can be remedied by surface cooling of the strand.
  • the partially solidified strand In order to prevent the partially solidified strand from cooling too quickly in the tertiary cooling zone, it is advantageous if the partially solidified strand, preferably its outer surface, is heated in the tertiary cooling zone by a, preferably inductive, heating device. Alternatively, the strand can also be heated by a burner.
  • cooling of the partially solidified strand according to the invention should not occur too slowly, locally too slow cooling can be prevented if 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 pull-out direction of the continuous casting machine.
  • the temperature of the strand can only be influenced by a single heating device without the need for distributed devices.
  • the partially solidified strand in the tertiary cooling zone is protected against rapid cooling by thermal insulation. It is advantageous if the Thermal insulation is preheated before the start of casting.
  • a particularly effective thermal insulation that also promotes the degassing of the melt that has not yet solidified and also protects against scaling consists in holding the strand in a vacuum or in an atmosphere of protective gas.
  • the insulation effect is either preset statically or is controlled or regulated during operation.
  • the setting can e.g. by swiveling insulation slats.
  • the insulation fins can be adjusted to different, but statically constant, swivel angles over the length of the strand.
  • the swivel angle can also be adjusted dynamically during the cooling phase. E.g. the swivel angle below - i.e. in the area of the beginning of the strand - larger than above, whereby the end of the strand is cooled more slowly than the beginning of the strand.
  • the cooled continuous mold preferably the continuous mold and the secondary cooling zone
  • the cooled continuous mold and the secondary cooling zone are separated (e.g. lifted off) from the tertiary cooling zone and the separated components transverse to the direction of extension of the continuous casting machine to another casting station, ie to another tertiary cooling zone.
  • a further strand can be cast, during which the strand previously produced is slowly cooled in the tertiary cooling zone.
  • the end of the strand is heated by a heating device, in particular an inductive heating device, an arc furnace, a plasma heater or by burning off exothermic covering powder.
  • a heating device in particular an inductive heating device, an arc furnace, a plasma heater or by burning off exothermic covering powder.
  • a stirring device such as a stirring coil is advantageous. This can advantageously be moved along the strand axis.
  • the partially solidified strand in the tertiary cooling zone can be rotated alternately clockwise and counterclockwise about its own axis. The reversal of direction ensures particularly intimate mixing inside the strand.
  • the cast strand is given a load-bearing shell as quickly as possible and the length of the secondary cooling can thereby 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 with a three-round, four-round, etc. cross-section.
  • the outer surface of the strand can be heated by the heating device, as a result of which the cooling (and thus the microstructure formation) in the central region of the partially solidified strand in the tertiary cooling zone of the continuous casting machine can be set very precisely.
  • the tertiary cooling zone has, in particular statically adjustable or dynamically controlled or regulated, heat insulation.
  • the continuous mold, the secondary and the tertiary cooling zone are arranged in a row (so-called in-line).
  • the productivity of the semi-continuous continuous casting machine is significantly increased if the continuous casting machine has several, transverse to the direction of extension
  • Continuous casting machine has offset tertiary cooling zones, the machine head of the continuous casting machine, comprising the continuous mold and preferably the secondary cooling zone, being connectable and separable to a tertiary cooling zone and at least the machine head being movable transversely to the pull-out direction.
  • a single machine head can serve several tertiary cooling zones, so that a high throughput is achieved despite the slow cooling of the partially solidified strands.
  • the machine head is preferably moved to a further tertiary cooling zone, during which the strand is stationary. This does not interfere with the controlled or regulated slow cooling in the central area of the strand.
  • the strand can also be moved away from the machine head, if necessary with tertiary cooling.
  • the adjustable heat insulation has at least one - advantageously several - insulation panels (also called lamella) that can be moved in the pull-out direction of the continuous casting machine or pivoted to the pull-out direction. This allows the cooling rate of the partially solidified strand to be passive, i.e. without additional energy input.
  • a simple and robust continuous casting machine has a continuous pull-off carriage for pulling out the strand, the continuous pull-off carriage being movable in the pull-out direction, for example by spindle, rack or cylinder drives.
  • the beginning of the strand is supported on the strand puller wagon via the cold strand.
  • the continuous pull-off carriage is connected to the machine head, the continuous pull-off carriage being movable with the machine head transversely to the pull-out direction.
  • the cast strand after the casting end is e.g. parked on a pedestal on the hall floor and the machine head is moved to another tertiary cooling with the strand puller.
  • the slow cooling of the parked strand can e.g. be ensured by a thermal hood placed over the strand.
  • the machine head it would also be possible for the machine head to be stationary and for the cast strand to be moved transversely to the pull-out direction.
  • the cast strand is e.g. placed on a pedestal, whereby the pedestal and the strand can be moved to a further tertiary cooling zone.
  • Fig 1a is poured from a ladle distributor, not shown, of liquid steel via a dip tube into a cooled continuous mold 2, with the continuous mold 2 being fluid-tightly closed by the cold strand 6 at the start of casting of the continuous casting machine, so that a mold level M (also called a meniscus) is established in the mold.
  • a mold level M also called a meniscus
  • a solidified strand start 1a is formed (see Fig 1c ) out. Due to the primary cooling of the cooled continuous mold 2, the partially solidified strand 1b following the solidified strand start 1a against the pull-out direction A is not solidified, but rather has only a thin strand shell and a liquid core.
  • the continuous casting machine has a continuous take-off carriage 11 which comprises the cold strand 6 itself, a threaded spindle 12, a threaded nut 13 and a motor 14 for moving the strand pull-off carriage 11 in the pull-out direction A.
  • the motor 14 is connected via a gear and the threaded spindle 12 to the threaded nut 13 and has a through drive for the threaded spindle 12.
  • strand 1 has already been pulled further out of the continuous mold 2, the strand 1 in the strand guide 3 following the mold 2 being supported by several strand guide rollers 3a, guided and cooled by a plurality of cooling nozzles 4a in the secondary cooling 4.
  • the strand 1 forms a load-bearing strand shell that can withstand the ferrostatic pressure. A breakdown of strand 1 is thus prevented.
  • Fig 1c the beginning of the strand 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 slowly controlled or regulatedly cooled, so that solidification takes place in the center of the partially solidified strand 1b with an upward direction.
  • the tertiary cooling zone 5 has a thermal insulation 9 and an in Fig 1f heater 7 shown.
  • FIG 2a An example of a thermal insulation 9 for tertiary cooling is shown, the atmosphere between the strand 1 and the heat hood 9 being evacuated by a vacuum pump (here a jet pump 15).
  • 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 heat insulation 9.
  • This measure also prevents oxidation, ie scaling, of strand 1; the vacuum treatment also degasses the melt which has not yet solidified in the strand.
  • the heat insulation 9 has several Isolation panels 9a, which can be closed independently of one another (opening angle 0 °), opened (opening angle 90 °) or partially opened (90 °> opening angle> 0 °).
  • Fig 1d the casting was ended in the continuous casting machine, so that a strand end 1c is formed.
  • the casting level M lies below the casting level shown in broken lines according to the method 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 regulated cooling of the partially solidified strand 1b is ensured by the thermal insulation 9 and the heating of the strand by the heating device 7 which can be moved in the pull-out direction A (see Fig 1f ).
  • the strand end 1c is heated by an inductive head heater 10, so that the strand end 1c is prevented from cooling too quickly.
  • 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 mold 2 is 0.25 m / min. Due to the heat insulation 9 and the reheating of the strand 1 by the movable heating device 7, the complete solidification of the strand 1 is only achieved after 13 hours.
  • the casting of the strand - without the slow cooling of the strand in the tertiary cooling zone 5 - was ended after only 46 minutes.
  • the casting process is completed quickly, which is why it increases the throughput of the semi-continuous continuous casting process advantageous if the in Fig 1f Machine head, no longer shown, is separated from the tertiary cooling zone 5 and is moved transversely to the pull-out direction A to a further tertiary cooling zone 5.
  • a new strand can be cast there, while the in Fig 1f strand 1 shown is cooled further slowly. After slow cooling of the strand 1 until it has completely solidified, the strand is conveyed out of the continuous casting machine, for example by a device according to the 8a and 8b .
  • FIG. 4 is a first alternative embodiment of the tertiary cooling zone 5 of FIG Fig. 1 shown.
  • the space between the strand 1 and the heat insulation 9 is evacuated by a jet pump 15, as a result of which good heat insulation and slow cooling are achieved.
  • the surface of the strand 1 is protected against scaling and the residual melt is degassed.
  • 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 room 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 a plasma heater, 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 Fig. 1 .
  • the insulation lamellae 9a of the heat insulation 9 can be pivoted to the pull-out direction, so that the air change between the ambient air and the strand 1 can be set inside the tertiary cooling zone 9.
  • the insulation slats 9a on the right side of the strand 1 were closed and shown on the left side opened by 10 ° to the pull-out direction A.
  • the slats 9a can be adjusted either manually or by actuators.
  • the Fig 3 shows schematically the time course of the travel path s of the inductive heating device 7 for reheating the outer surface of the strand 1.
  • the heating device 7 is drawn through in the upper region of the strand 1 and shown in dashed lines in the lower region. Since the solidification front shifts from the bottom to the top during cooling (ie from the start of the strand 1a to the end of the strand 1c), the travel path s of the heating device 7 also decreases over time.
  • a plurality of heating devices for example burners
  • a plurality of heating devices for example burners
  • the Fig. 4 shows the temperatures in ° C according to Fig. 1 produced strand 1 in a sectional view 3h after casting start (part figure 1), 8.3h after casting start (part figure 2) and when the strand 1 has solidified, about 13h after casting start (part figure 3).
  • the time course of the temperatures of strand 1 at different positions on the surface and in the center of the strand are shown in Fig. 5 shown. It can be seen from this that the casting of the strand and thus also the primary and secondary cooling is ended 46 minutes after the start of casting and then the strand 1 is cooled in a controlled manner only by the tertiary cooling 5.
  • a vertical continuous casting machine according to the invention is shown in two views.
  • the liquid steel is poured from a pan 30 into the pouring manifold 31 via a shadow pipe, then the melt flows into the continuous mold 2 via a dip pipe ( SEN ), not shown.
  • the primary cooling in the mold 2 forms a partially rigid strand 1 with a load-bearing strand shell.
  • the melt is influenced even further 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 mold 2, the stirring coil 32, the strand guide 3 with the secondary cooling zone 4, and optionally also the tertiary cooling zone 5, can be moved on a casting car 33 on the casting platform G.
  • the strand 1 with the cold strand 6 is pulled out of the continuous mold 2 via the strand withdrawal carriage 11.
  • the strand take-off carriage 11 is driven via four threaded spindles 12 and guided by additional guide rails 34, a motor being connected to the threaded nut 13 via a gear and the threaded spindle 12.
  • the casting carriage 33 can be moved transversely to the pull-out direction A to a further casting station, since the casting of the partially solidified strand, ie without the tertiary cooling of the strand 1, takes considerably less time than the tertiary cooling of strand 1 until it solidifies.
  • the strand 1 is slowly cooled by the thermal insulation 9 and possibly by a heating device (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 Fig. 8a, 8b schematically show an embodiment for the conveying of the solidified strand 1 from the tertiary cooling zone.
  • the strand 1 is laterally supported by two brackets 38, so that on the continuous casting machine there are also very different diameters (see floor plan of Fig 8a ) can be shed.
  • Fig 8a the strand 1 has already been swung out with respect to the vertical and lies on the brackets 38.
  • Fig 8b the strand 1 is placed on the roller 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 (15)

  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), et ensuite
    - un guidage de barre (3) pour l'appui et le guidage de la barre (1), comprenant un refroidissement secondaire (4) pour le refroidissement de la barre (1), et ensuite encore
    - un refroidissement tertiaire (5) pour la poursuite du refroidissement de la barre (1),
    comprenant les étapes de procédé :
    - 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 (6) une tête de barre (1a) entièrement solidifiée et, ensuite, une barre (1b) partiellement solidifiée ;
    - retrait de la barre (1b) partiellement solidifiée de la lingotière à base ouverte (2) ;
    - appui 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) de la lingotière à base ouverte (2) ;
    - arrêt du retrait, de sorte que la queue de barre (1c) se trouve hors 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 à la tête de la barre (1a) et de manière décroissante jusqu'à la queue de la barre (1c) et le refroidissement de la barre (1b) partiellement solidifiée dans la zone de refroidissement tertiaire (5) étant réglé par l'influence d'au moins un élément du groupe comprenant :
    - isolation thermique de la barre (1, 1b),
    - chauffage de la barre (1, 1b),
    - refroidissement superficiel de la barre (1, 1b) ;
    - extraction de la barre (1) hors de la machine de coulée continue.
  2. Procédé selon la revendication 1, caractérisé en ce que la barre (1b) partiellement solidifiée est chauffée par un dispositif chauffant (7) dans la zone de refroidissement tertiaire (5).
  3. Procédé selon la revendication 2, caractérisé en ce que le dispositif chauffant (7) est mobile dans la direction de retrait (A) de la machine de coulée continue.
  4. Procédé selon l'une des revendications 1 à 3, 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).
  5. Procédé selon la revendication 4, caractérisé en ce que l'effet isolant de l'isolation thermique (9) est réglé.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que la queue de barre (c) est chauffée par un chauffage de tête (10).
  7. Procédé selon l'une des revendications 1 à 6, 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).
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que la barre (1b) partiellement solidifiée est agitée par une bobine d'agitation (32) fixe ou mobile 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).
  9. Machine de coulée continue pour l'exécution du procédé selon l'une des revendications 1 à 8, comprenant
    - un dispositif (12) permettant le retrait d'une barre (1) d'une lingotière à base ouverte (2) et un dispositif (37, 38, 39) permettant 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 l'appui et le guidage de la barre (1), comprenant une zone de refroidissement secondaire (4) pour le refroidissement de la barre (1), et ensuite encore
    - une zone de refroidissement tertiaire (5) pour la poursuite du refroidissement de la barre (1), caractérisée
    en ce que la zone de refroidissement tertiaire (5) comprend une isolation thermique (9) à préréglage statique ou à réglage contrôlé ou régulé de manière dynamique pour le refroidissement contrôlé ou régulé de la barre (1b) partiellement solidifiée, l'isolation thermique (9) ajustable comprenant au moins un panneau d'isolation (9) qui peut être déplacé dans la direction de retrait (A) ou peut être pivoté par rapport à la direction de retrait (A) .
  10. Machine de coulée continue selon la revendication 9, caractérisée en ce que la zone de refroidissement tertiaire (5) comprend un dispositif chauffant (7).
  11. Machine de coulée continue selon l'une des revendications 9 à 10, 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, comprenant la lingotière à base ouverte (2), pouvant être reliée à une zone de refroidissement tertiaire (5) et séparée de ladite zone.
  12. Machine de coulée continue selon la revendication 11, caractérisée en ce que plusieurs zones de refroidissement tertiaire (5) sont disposées en arc ou en ligne les unes derrière les autres.
  13. Machine de coulée continue selon l'une des revendications 10 à 12, caractérisée en ce que la machine de coulée continue comprend un chariot de retrait de barre (11) permettant le retrait de la barre (1), le chariot de retrait de barre (11) étant mobile dans la direction de retrait (A).
  14. Machine de coulée continue selon les revendications 10 et 13, caractérisée en ce que le chariot de retrait de barre (11) est relié à la tête de machine et les deux sont mobiles perpendiculairement à la direction de retrait (A).
  15. Machine de coulée continue selon l'une des revendications 10 à 14, caractérisée en ce que la tête de machine est fixe et la barre (1) est mobile perpendiculairement à la direction de retrait (A).
EP17173954.3A 2014-03-27 2015-01-27 Coulée semi-continue d'une barre d'acier Active EP3251773B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP14162061 2014-03-27
EP15702712.9A EP3122492B2 (fr) 2014-03-27 2015-01-27 Coulée semi-continue d'une barre en acier
PCT/EP2015/051619 WO2015079071A2 (fr) 2014-03-27 2015-01-27 Coulée semi-continue d'une barre en acier

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP15702712.9A Division EP3122492B2 (fr) 2014-03-27 2015-01-27 Coulée semi-continue d'une barre en acier
EP15702712.9A Division-Into EP3122492B2 (fr) 2014-03-27 2015-01-27 Coulée semi-continue d'une barre en acier

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Publication Number Publication Date
EP3251773A1 EP3251773A1 (fr) 2017-12-06
EP3251773B1 true EP3251773B1 (fr) 2020-05-06

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ID=50389887

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Application Number Title Priority Date Filing Date
EP15702712.9A Not-in-force EP3122492B2 (fr) 2014-03-27 2015-01-27 Coulée semi-continue d'une barre en acier
EP17173954.3A Active EP3251773B1 (fr) 2014-03-27 2015-01-27 Coulée semi-continue d'une barre d'acier

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EP15702712.9A Not-in-force EP3122492B2 (fr) 2014-03-27 2015-01-27 Coulée semi-continue d'une barre en acier

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US (1) US10307819B2 (fr)
EP (2) EP3122492B2 (fr)
CN (1) CN106457371B (fr)
AT (3) AT15223U1 (fr)
RU (1) RU2675880C2 (fr)
WO (1) WO2015079071A2 (fr)

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WO2018172358A1 (fr) * 2017-03-21 2018-09-27 Primetals Technologies Austria GmbH Installation et procédé de coulée semi-continue de barres de bloom
DE102017108394A1 (de) 2017-04-20 2018-10-25 Inteco Melting And Casting Technologies Gmbh Verfahren und Vorrichtung zum Herstellen von Gussblöcken aus Metall
EP3437757A1 (fr) 2017-08-04 2019-02-06 Primetals Technologies Austria GmbH Coulée continue d'une barre métallique
EP3437759B1 (fr) 2017-08-04 2022-10-12 Primetals Technologies Austria GmbH Coulée continue d'une barre métallique
EP3437756B1 (fr) 2017-08-04 2021-12-22 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
KR102586739B1 (ko) * 2018-11-28 2023-10-06 프리메탈스 테크놀로지스 오스트리아 게엠베하 금속 스트랜드의 연속 주조
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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
MX2022007477A (es) 2019-12-20 2022-06-29 Novelis Inc Tama?o del grano final reducido de un material forjado no recristalizado producido via la ruta de enfriamiento directo (dc).
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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
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Publication number Publication date
AT515731B1 (de) 2018-08-15
US10307819B2 (en) 2019-06-04
CN106457371B (zh) 2019-05-07
WO2015079071A3 (fr) 2015-07-30
EP3122492A2 (fr) 2017-02-01
RU2675880C2 (ru) 2018-12-25
US20170216908A1 (en) 2017-08-03
EP3251773A1 (fr) 2017-12-06
CN106457371A (zh) 2017-02-22
RU2016141648A3 (fr) 2018-06-29
AT15215U1 (de) 2017-03-15
EP3122492B2 (fr) 2020-06-10
AT515731A2 (de) 2015-11-15
RU2016141648A (ru) 2018-04-27
EP3122492B1 (fr) 2017-07-05
WO2015079071A2 (fr) 2015-06-04
AT515731A3 (de) 2017-01-15
AT15223U1 (de) 2017-03-15

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