EP3546086B1 - Procédé destiné à la coulée continue d'une structure métallique à l'aide d'une lingotière et d'une brique de coulée - Google Patents

Procédé destiné à la coulée continue d'une structure métallique à l'aide d'une lingotière et d'une brique de coulée Download PDF

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Publication number
EP3546086B1
EP3546086B1 EP18164586.2A EP18164586A EP3546086B1 EP 3546086 B1 EP3546086 B1 EP 3546086B1 EP 18164586 A EP18164586 A EP 18164586A EP 3546086 B1 EP3546086 B1 EP 3546086B1
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EP
European Patent Office
Prior art keywords
distance
casting
sprue
metal strand
measurement
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EP18164586.2A
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German (de)
English (en)
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EP3546086A1 (fr
Inventor
Werner Droste
Daniel Krings
Stephen Instone
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Speira GmbH
Original Assignee
Hydro Aluminium Rolled Products GmbH
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Priority to EP18164586.2A priority Critical patent/EP3546086B1/fr
Publication of EP3546086A1 publication Critical patent/EP3546086A1/fr
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    • 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
    • B22D11/081—Starter bars
    • 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
    • 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
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • B22D2/003—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the level of the molten metal

Definitions

  • the invention relates to a device for the continuous casting of at least one metal strand, in particular at least one rolling billet from a melt made of an aluminum alloy with at least one mold, at least one casting table that can be lowered relative to at least one mold and at least one casting block, the at least one casting block being assigned to a respective mold and is arranged on the at least one lowerable casting table.
  • the invention relates to a method for continuously casting at least one metal strand, in particular a rolling billet from a melt of an aluminum alloy using the device according to the invention.
  • the molten metal is passed through a mold and cooled by primary and secondary coolants to form a metal billet or rolling billet.
  • the metal cooled by the primary and secondary coolants is taken up by a sprue block.
  • the sprue block arranged on a casting table is lowered during continuous casting after casting on the metal strand foot by lowering the casting table, so that a metal strand or rolling ingot can be produced.
  • the metal strand cools further in the metal strand foot area that was first cast.
  • the casting of the metal strand is one of the critical phases of metal continuous casting, since the metal strand base is strongly cooled from the melt into the solid state and shrinkage processes occur. A characteristic deformation of the metal strand foot results.
  • aspect ratios of the narrow side to the broad side of the metal strand of 1/3 and smaller (eg 1/4), as occurs for example with rolling ingots, the narrow sides of the sprue arch against the continuous casting direction in the direction of the mold.
  • the stability of the metal strand in the sprue block is impaired. If it is too pronounced, this can lead to the metal strand tipping. When tilting, the metal strand can also "get stuck” in the mold and become stuck in the mold, which can lead to major problems in the casting system without intervention when the casting process is continued.
  • the arching of the narrow sides of the metal strand can also lead to constrictions on the narrow sides of the rolling billet, so that liquid metal melt can escape from the interior of the metal strand on the narrow sides.
  • the problem with the known measuring device is that "sticking" of the metal strand or ingot can be detected relatively late. So far, the focus has been on the shape of the warping and not on the metal strand getting stuck. The intervention in the casting process was therefore not carried out on time.
  • the known measuring device was previously not suitable for production, but only used for individual measurements. There is therefore no production control.
  • the ambient conditions when casting metal strands, in particular aluminum strands and rolled billets are particularly problematic for continuous use of the corresponding sensors due to the high temperatures, possible metal splashes and the presence of water cooling. A stable measurement with only a low risk of failure is a prerequisite for use in production. About that In addition, a repeatably precise positioning and a simple usability of the measuring device have not been given up to now.
  • the known measuring device is in need of improvement with regard to its use in production.
  • the present invention is based on the object of proposing a device for continuously casting a metal strand, in particular a rolling billet from a melt of an aluminum alloy, which offers an improved possibility of intervention in the continuous casting process and also ensures this permanently in production operation.
  • the invention has the object of providing a method for continuously casting a metal strand, in particular a rolling billet from a melt of an aluminum alloy using the device according to the invention.
  • the present invention is defined in accordance with the appended claims.
  • the above-mentioned object for a device for continuous casting of at least one metal strand, in particular at least one rolling billet from a melt made of an aluminum alloy is achieved in that the at least one sprue block has at least one distance sensor, which is located in the vicinity or on the center line running perpendicular to the broad side of the associated mold, preferably in the geometric center of the sprue block surface of the sprue block, and the at least one distance sensor can measure the distance between the sprue block surface and the surface of the metal strand base facing the sprue block during continuous casting.
  • arranging the distance sensor "near" the center line of the casting stone surface running perpendicular to the broad side of the mold means that the distance sensor is arranged at a maximum of +/- 0.5 cm at right angles from the center line of the casting stone surface.
  • the center line of the sprue stone surface means the imaginary axis of symmetry of the sprue stone surface, which divides the sprue stone surface into two symmetrical sub-areas towards the narrow sides.
  • the distance between the surface of the metal strand foot facing the casting block in the center of the metal strand foot and the casting block during of continuous casting can be measured.
  • the distance between the center of the metal strand foot and the sprue block changes almost independently of the curvature of the narrow sides of the metal strand and thus enables a check to be made as to whether the metal strand has possibly got stuck in the mold. This can be noticeable by rapidly changing the distance when lowering the sprue block over the casting table after casting on the metal strand foot.
  • the device according to the invention therefore makes it possible to detect a “sticking” of the metal strand or the rolling ingot particularly early and thus to intervene early in the continuous casting process.
  • the at least one distance sensor measures the distance between the surface of the sprue block and the surface of the metal strand base facing the sprue block, preferably inductively, during the continuous casting.
  • the at least one inductive distance sensor can be made very robust and simple, so that precise measured values can be provided even under the problematic ambient conditions of the device.
  • the at least one sprue block has at least two further, preferably inductive distance sensors, which are arranged at a distance from the center line, preferably symmetrically to the center line.
  • the curvature of the metal strand foot and possibly also a tilting of the metal strand on the sprue block during the continuous casting can be measured by the at least two further distance sensors.
  • the continuous casting process can be stopped via the device.
  • the continuous casting process can be controlled in a targeted manner by intervening in the primary and secondary coolants using the data from the other distance sensors.
  • the inflow of the amount of cooling water or the water distribution can be changed, reduced or increased in a targeted manner on the broad sides.
  • the cooling can also be adapted indirectly by changing the lowering speed of the casting table or by a combination of changing the amount of water, water distribution and lowering speed.
  • At least three inductive distance sensors which are preferably arranged on the axis of symmetry of the casting stone surface that runs parallel to the broad side of the mold and can thus determine the position of the metal strand or the shape of the warping very precisely.
  • wireless transmission of the measured values in the sense of the present patent application includes all possible forms of non-wired data transmission. For example, it is conceivable to integrate sensors into an existing wireless network and to transmit the measured values using specific network or other transmission protocols, for example Bluetooth. Due to the very demanding environmental conditions of the sensors in the production area, the simplest possible telemetric transmission of the measurement data is advantageous. With telemetric data transmission, only the recorded measurement data from the sensor is wirelessly, usually digitally, to a Receiving station is transmitted, which processes this if necessary and forwards it to an evaluation unit.
  • the measurement data recording unit can be designed to be particularly robust and simple and separated from more sensitive control electronics.
  • the measurement data recording unit only serves to record the measured values and forward them to the separate control unit, which can also be used, for example, to calibrate the measurement data recording unit. This significantly improves the reliability of the distance sensor against failure.
  • the separate control unit can, for example, be arranged in a better protected location, e.g. below the casting table, in order to reliably process the measurement data, for example wirelessly forward them and also control the measurement data acquisition unit.
  • a rechargeable electrical energy supply for the distance sensors for example in the form of an accumulator, is provided, which is preferably arranged below the casting table. Below the casting table, the electrical power supply is particularly well protected from metal splashes and extremely high temperatures that emanate from the metal strand. Rechargeable electrical power supplies allow the distance sensors to be operated without electrical cabling, which would be problematic in production due to the lowerable casting table. The charging of the electrical energy supply can take place, for example, in a certain position of the casting table, so that sufficient electrical energy is available to operate the distance sensors at the beginning of each continuous casting process.
  • At least one inductive distance sensor is provided, the measurement data recording unit of which is a Having the transducer mount, wherein the transducer mount can fix the transducer via a frictional connection, it is possible to replace the transducer, for example by overcoming the frictional connection between the transducer mount and the transducer, without replacing the entire sensor.
  • the frictional connection between the transducer mount and the transducer ensures that a movement of the transducer due to the frictional connection is converted into a movement of the transducer mount.
  • the movement of the transducer receptacle can be used, for example, to generate the measured value in a measuring unit of the distance sensor.
  • the transducer is preferably designed as a steel wire.
  • the transducer holder facilitates the use of transducers in the form of steel wires in that after the steel wire has frozen in the metal strand foot, on the one hand, the movement of the steel wire can be passed on to a measuring unit via the transducer holder and, on the other hand, the steel wire can be easily transferred from the transducer holder when the continuous casting is completed Overcoming the frictional connection, for example when removing the cast metal strand or rolling billet, can also be removed from the transducer mount.
  • an improvement in the measuring accuracy of the distance sensors is achieved in that means for mechanically or magnetically providing a frictional connection with the measuring transducer are provided in the transducer receptacle.
  • Both possibilities, mechanical and magnetic have the advantage that they are particularly easy to implement and at the same time can withstand high temperatures.
  • the transducer receptacle preferably additionally has a funnel-shaped opening for the transducer, for example a steel wire, in order to arrange it in the transducer receptacle.
  • ring magnets can be provided in the measuring transducer receptacle, which surround the steel wire and fix the steel wire in a non-positive manner through the magnetic field prevailing in the ring magnet.
  • Magnets for example samarium-cobalt magnets, can be used here, which still provide sufficiently strong magnetic fields for the frictional connection even at high temperatures of more than 250 ° C.
  • rings made of elastic material for example made of rubber, silicone or Teflon, which surround the steel wire and can fix it in the transducer receptacle, can be considered as means for providing a mechanical frictional connection.
  • the means for mechanically providing the frictional connection with the steel wire are at least one ring made of an elastic material surrounding the steel wire in a blind hole of the transducer mount, means for exerting pressure on the at least one ring in the axial direction of the steel wire .
  • By exerting pressure on the at least one ring it is elastically deformed. Due to the arrangement in the blind hole, the at least one ring is essentially deformed into the interior of its ring opening, so that the ring opening of the at least one ring is significantly reduced and the steel wire is thereby mechanically clamped via a frictional connection.
  • the means for exerting pressure can preferably be provided via a screw sleeve which has an opening for the steel wire and which can be screwed into the transducer receptacle in order to exert pressure on the at least one elastic ring.
  • the transducer receptacle preferably has a further bore at the end opposite the transducer, with which it can be easily connected to the measuring unit in a form-fitting and / or force-fitting manner, preferably screwed to the measuring unit. This enables a simple connection of the transducer to the measuring unit of the distance sensor and, at the same time, allows the transducer to be removed upon completion of the continuous casting.
  • the device preferably has a display device on which the measured values of the distance sensors, preferably all distance sensors, are represented graphically, numerically or by signal colors.
  • the operators of the casting plant can thus easily monitor the start of the casting process immediately, even when multiple metal strands or rolling bars are cast, and intervene in the casting process at an early stage.
  • the device has a plurality of molds and a plurality of associated sprue blocks, which are arranged so that they can be lowered on a casting table, the dies and the associated sprue blocks have the same and / or different formats.
  • the above-mentioned object for a method for the continuous casting of metal strands, in particular rolling ingots is achieved in that at least one distance sensor measures the distance between the sprue block surface and the surface of the metal strand foot facing the sprue block during the continuous casting and the at least one Distance sensor is arranged in the vicinity of or on the center line of the casting stone surface of the casting stone in the casting stone, which center line runs perpendicular to the broad side of the mold.
  • the use of at least one distance sensor on or in the vicinity of the center line of the surface of the sprue block achieves that a "sticking" of the metal strand during continuous casting can be measured directly by changing the distance between the surface of the sprue block and the surface of the metal strand base facing the sprue block. It was recognized that with the method according to the invention, the “sticking” of the metal strand can be recognized much earlier and countermeasures can be initiated than before. If the distance sensor arranged in the vicinity of or on the center line of the sprue block surface detects a change in the distance between the metal strand foot and the sprue block surface, a “sticking” of the metal strand can be concluded, for example.
  • the distance sensor is preferably arranged in the geometrical center of the casting stone surface, ie in the middle of the center line; this achieves a maximum decoupling of the distance measurement from bulges on the narrow sides.
  • the change in distance can be detected in the geometric center almost without a superimposition of a change in distance due to a warping of the narrow sides of the metal strand or billet. A sticking of the metal strand can thus be detected much earlier and more reliably. This can be used to, for example, use the primary and secondary coolants to influence the "sticking" at an early stage or to interrupt the casting process early.
  • the distance sensors inductively measure the distance between the sprue stone surface and the surface of the metal strand foot facing the sprue stone during continuous casting.
  • Inductive distance sensors can be made very robust and simple. You can therefore provide precise measured values even in problematic environmental conditions.
  • At least two further distance sensors which are arranged at a distance from the center line, preferably symmetrically to the center line, are measured during the casting of the metal strand the distance between the surface of the sprue block and the surface of the metal strand foot facing the sprue block, in addition to the sticking of the metal strand, the curvature of the narrow sides of the metal strand foot or the roll ingot foot can be measured simultaneously.
  • asymmetrical warping or excessive warping of the narrow sides can also be measured via the further distance sensors so that the primary - and secondary coolants of the mold can be used to influence the continuous casting process in order to eliminate the defects.
  • the display of the measurement results of the distance sensors can preferably only be made available by displaying the measurement results or also by graphically processing the measurement results, for example in the form of a bar chart in the production control system, but in particular also directly at the casting plant.
  • the provision of the measurement results either in the production control system and / or directly on the casting system enables very quick intervention in the casting process, which was previously not possible.
  • the measurement data of at least one distance sensor are sent wirelessly to an evaluation unit, preferably transmitted telemetrically during the continuous casting.
  • the continuous casting process is controlled as a function of the measurement data of at least one distance sensor evaluated in an evaluation unit
  • the continuous casting process for example the primary and secondary coolants or, for example, also the casting speed of the molten metal can be changed to the measurement data based on the data determined by the distance sensors and control of the continuous casting process can be carried out. This means that the continuous casting process can be acted on much earlier than before in order to avoid errors during the continuous casting or to take targeted countermeasures.
  • Fig. 1 shows first in a schematic sectional view an embodiment of a device according to the invention for continuously casting a metal strand 1, in particular a rolling billet 1 from a melt made of an aluminum alloy with at least one mold 2, at least one casting table 3 that can be lowered relative to at least one mold 2 and at least one sprue 4, which is assigned to the mold 2 and is arranged on the lowerable casting table 3.
  • liquid metal melt made of an aluminum alloy is passed through the mold 2 and is cooled via the mold 2 with its primary and secondary coolants (not shown).
  • the cooled metal forms the shape of a strand with a generally rectangular cross-sectional area, which is poured into the sprue block 4.
  • the in Fig. 1 The metal strand foot 12 shown, which designates the area of the metal strand in contact with the sprue block 4, is initially cooled.
  • the further cooling process of the metal strand foot 12 in contact with the sprue block 4 leads to shrinkage processes due to the change in the aggregate state of the metal, so that the metal strand foot 12 deforms during cooling.
  • the in Fig. 1 The sprue 4 shown has three distance sensors 5, 6, 7, a distance sensor 5 being arranged in the vicinity of or on the center line 9 running perpendicular to the broad side 8 of the mold 2, preferably in the center 10 of the sprue surface 11 of the sprue.
  • the distance sensors 5, 6, 7 of the in Fig. 1 illustrated embodiment measure the distance between the Sprue stone surface 11 and the surface of the metal strand foot 12 facing the sprue stone 4 during the continuous casting.
  • FIG. 2 is the in Fig. 1 Sprue block 4 shown is shown again. Additionally shows Fig. 3 a schematic plan view of the sprue block surface 11 of the sprue block 4 from Fig. 2 .
  • Fig. 3 a schematic plan view of the sprue block surface 11 of the sprue block 4 from Fig. 2 .
  • the two further distance sensors 6, 7 are arranged at a distance from the center line 9, preferably symmetrically to the center line 9.
  • the position of the distance sensors 5, 6, 7 shown represents a preferred embodiment of the arrangement of the distance sensors.
  • the distance sensors 5, 6, 7 are arranged on the center line 9b of the sprue block surface 11 running parallel to the broad side 8.
  • the center line 9b corresponds to the axis of symmetry of the casting stone surface 11, which runs parallel to the broad side 8 of the mold.
  • the distance sensor 5 arranged in the center of the sprue stone surface 11 measures the distance from the sprue stone surface to the metal strand foot or the surface of the metal strand facing the sprue stone 4, almost without being influenced by shrinkage processes that always occur in the direction of the narrow sides. This makes it possible to intervene in the continuous casting process as early as possible.
  • the two laterally arranged distance sensors 6, 7 detect the curvature of the metal strand foot 12 due to the cooling of the metal on the narrow sides of the strand and can be evaluated to determine the curvature of the narrow sides of the metal strand foot 12. If the curvature is, for example, uneven, the metal strand or billet 1 may tilt. The additional use of these two distance sensors results Another option is to monitor the casting process and, if necessary, intervene to prevent the metal strand from tilting or getting stuck or to stop the continuous casting process.
  • the distance sensors 6, 7 are preferably arranged symmetrically at a distance from the center line 9, which runs perpendicular to the broad side 8 of the mold 2, like this Fig. 3 shows.
  • the illustrated distance sensors 5, 6, 7 transmit the measurement data wirelessly, preferably telemetrically, to an evaluation unit.
  • the distance sensors 5, 6, 7 are each divided into a measurement data recording unit 14, 15, 16 and control units 17, 18, 19.
  • the measurement data recording units 14, 15, 16 are used exclusively for recording measurement data and have no additional control electronics.
  • the control units 17, 18, 19 can reliably ensure their control functions despite the environmental conditions at the location of the measurement data recording units 14, 15, 16, since the more sensitive electronics can be arranged in protected locations.
  • the control units 17, 18, 19 can be used, for example, to calibrate the measurement data recording units 14, 15, 16 and / or for data processing or data transmission steps.
  • the data is preferably transmitted wirelessly, which reduces the effort for the device according to the invention and has advantages with regard to cabling of the moving casting table that may otherwise be subject to wear.
  • a casting table is now shown in a perspective schematic representation with a plurality of sprue blocks 4.
  • the transducers 23, here designed as steel wires can be seen.
  • Each sprue block 4 has in the embodiment of FIG Fig. 4 Recordings for the distance sensors and corresponding bushings for the transducers 23.
  • the device shown is for casting a total of four metal strands formed, which for example have an identical format here. However, it is also conceivable to cast several metal strands with different formats with the device according to the invention in order, for example, to be able to optimally utilize the furnace capacity of melting furnaces.
  • Fig. 5 is the bottom of the casting table of the embodiment Fig. 4 shown in a schematic perspective. It can be seen in the exemplary embodiment in Fig. 4 Rechargeable electrical power supply 20 arranged below the casting table.
  • Mean for charging the electrical power supply 20a as already shown in FIG Fig. 4 , which, for example, contactlessly recharges the energy supply 20 of the distance sensors in a specified position of the casting table 3.
  • a complex and error-prone cable routing in the area of the casting table 3 can be replaced via an inductive energy transfer.
  • the Figures 6a and 6b now show two different exemplary embodiments of inductive distance sensors 5, 6, 7.
  • the distance sensors 5, 6, 7 preferably have a measurement data recording unit 20, which consists of a measuring unit 21 and a measurement transducer receiver 22.
  • the transducer receptacle 22 is in engagement with the measuring unit 21.
  • the transducer 23 is also in engagement with the transducer mount 22 via a frictional connection, so that the transducer 23, in the present case designed as a steel wire, for example, after freezing in the metal strand foot 12, a change in position due to a warping of the metal strand foot 12 or the metal strand 1 getting stuck the measuring unit 21 can pass on and it can thus measure the distance between the metal strand base surface and the sprue block surface 11.
  • Means 24, 25 are provided in the measuring transducer receptacle 22, which mechanically or magnetically provide a force fit with the measuring transducer 23.
  • the non-positive fixing allows the position change of the transducer 23 to be passed on to the measuring unit 21, but on the other hand the transducer 23 can be removed from the transducer receptacle when the frictional connection is overcome. This usually takes place when the metal strand 1 is removed after the continuous casting has been completed. The transducer receptacle is then ready to receive the next transducer 23.
  • the preparations of the sprue block 4 for a new continuous casting process are particularly simple as a result. All that needs to be done is to arrange a new steel wire as a measuring transducer in the sprue 4.
  • FIG Figure 6b For a mechanical provision of the frictional connection between the measuring transducer 23 and the measuring transducer receptacle 22, FIG Figure 6b at least one ring made of an elastic material, for example consisting of rubber, Teflon or silicone, surrounding the steel wire is provided in a blind hole 24a of the transducer receptacle 22. Via means 26 for exerting pressure on the at least one ring 24a in the axial direction of the steel wire, pressure can be exerted on the at least one ring 24, here on several rings, and the ring opening of the in Figure 6b rings 24 shown are narrowed. The steel wire 23 is thus clamped mechanically in the transducer receptacle via a force fit.
  • an elastic material for example consisting of rubber, Teflon or silicone
  • the means 26 for exerting pressure on the elastic rings 24 is designed, for example, as a screw sleeve 26 which has an opening for inserting the steel wire 23 and at the same time can be screwed into the blind hole 24a of the transducer receptacle 22 via a thread.
  • a screw sleeve 26 which has an opening for inserting the steel wire 23 and at the same time can be screwed into the blind hole 24a of the transducer receptacle 22 via a thread.
  • the distance sensors 5, 6, 7 are preferably designed as so-called LVDT (linear variable differential transformer) sensors.
  • the measuring unit 21 can preferably be permanently coupled to an armature of an LVDT sensor, so that the movement of the measuring unit directly causes a movement of the armature of the LVDT sensor.
  • the anchor of the LVDT sensor consists of an anti-magnetic coupling piece, which can be coupled to the measuring unit 21 and has a ferromagnetic core which is moved between coil arrangements in the sensor. This generates the measurement signal.
  • LVDT sensors are very robust distance sensors and can guarantee accurate distance measurement even in difficult environmental conditions.
  • An alternative way of transferring the movement of the steel wire 23, which is supposed to freeze in the metal strand foot 12, to the measuring unit 21, can be achieved by a magnetic frictional connection of the measuring transducer 23, i.e. the steel wire, and the measured value recording 22, for example by using annular samarium cobalt -Magnets 25 can be achieved.
  • These magnets ensure that the steel wire 23 is held by means of a magnetic frictional connection with the transducer mount even at high ambient temperatures, so that its movement can be passed on to the measuring unit 21.
  • the transducer receptacle 22 has in Figure 6a funnel-shaped opening.
  • a corresponding opening can also be made in the screw sleeve of the Figure 6b be provided in order to facilitate the introduction of the steel wire.
  • the transducer mount 22 Via the further bore en27 provided on the measuring transducer mount 22, the transducer mount 22 can be screwed onto the measuring unit 21, which then converts the movement of the steel wire 23 into a movement of the measuring unit 21.
  • the measured values of the distance sensors 5, 6, 7 shown graphically, for example as a bar chart, in order to provide the operators of the casting plant with information about the course of the casting phase of the continuous casting.
  • the bar chart can, for example, have different colors for measured values in the target range and outside the target range.
  • the display device off Fig. 7 can also take the form of a traffic light or another intuitively accessible representation. In any case, a visible representation in the area of the casting system is advantageous in order to be able to directly control the course of the casting.
  • the measured values can also be used to control the casting process in the control room of the casting plant.
  • the distance between the metal strand foot 12 and the sprue stone surface 11 can be monitored during continuous casting, for example in the control room of the casting plant, so that the continuous casting process can be controlled depending on the measurement data of the at least one distance sensor evaluated in an evaluation unit.
  • This enables early intervention in the continuous casting process when defects occur and the defects of uneven warping and / or sticking of the metal strand can be avoided, for example via primary and secondary coolants. This results in a significantly improved continuous casting process.

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  • Mechanical Engineering (AREA)
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Claims (16)

  1. Dispositif pour la coulée continue d'au moins une barre métallique (1), en particulier d'au moins un lingot de laminage, à partir d'une fonte d'un alliage d'aluminium, avec au moins une lingotière (2), au moins une table de coulée (3) pouvant être abaissée par rapport à au moins une lingotière (2), et au moins un bloc de coulée (4), dans lequel l'au moins un bloc de coulée (4) est associé à chaque fois à une lingotière (2) et est disposé sur l'au moins une table de coulée (3) pouvant être abaissée,
    caractérisé en ce que
    l'au moins un bloc de coulée (4) présente au moins un capteur de distance (5, 6, 7) qui est disposé à une distance d'au plus +/- 0,5 cm ou sur la ligne centrale (9a) s'étendant perpendiculairement au côté large de la lingotière associée, préférentiellement au centre (10), de la surface du bloc de coulée (11) du bloc de coulée (4), et l'au moins un capteur de distance (5, 6, 7) peut mesurer la distance entre la surface du bloc de coulée (11) et la surface du pied de la barre métallique tournée vers le bloc de coulée (4) pendant la coulée continue.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    l'au moins un bloc de coulée (4) présente au moins deux autres capteurs de distance (6, 7) qui sont disposés à distance de la ligne centrale (9a), préférentiellement symétriquement par rapport à la ligne centrale (9a).
  3. Dispositif selon la revendication 1 ou 2,
    caractérisé en ce qu'
    au moins un capteur de distance (5, 6, 7) est prévu, qui peut transmettre sans fil, préférentiellement télémétriquement, les données de mesure à une unité d'évaluation.
  4. Dispositif selon l'une des revendications 1 à 3,
    caractérisé en ce qu'
    au moins un capteur de distance (5, 6, 7) est prévu, qui présente une unité de recueil de données de mesure (14, 15, 16) et une unité de contrôle séparée (17, 18, 19).
  5. Dispositif selon l'une des revendications 1 à 4,
    caractérisé en ce qu'
    une alimentation électrique rechargeable (20) pour les capteurs de distance (5, 6, 7) est prévue, qui est disposée sous la table de coulée (3).
  6. Dispositif selon l'une des revendications 1 à 5,
    caractérisé en ce qu'
    au moins un capteur de distance inductif (5, 6, 7) est prévu, dont l'unité de recueil de données de mesure (14, 15, 16) présente un support de transducteur de mesure (22), dans lequel un transducteur de mesure (23) peut être fixé par l'intermédiaire du support de transducteur de mesure (22) au moyen d'un verrouillage de force.
  7. Dispositif selon la revendication 6,
    caractérisé en ce que
    le transducteur de mesure (23) est formé comme un fil d'acier.
  8. Dispositif selon la revendication 6 ou 7,
    caractérisé en ce que
    le support de transducteur de mesure (22) présente des moyens pour fournir mécaniquement ou magnétiquement un verrouillage de force (24, 25) avec le transducteur de mesure (23).
  9. Dispositif selon la revendication 8,
    caractérisé en ce qu'
    au moins un anneau (24) fait d'un matériau élastique est prévu comme moyen (24) pour fournir mécaniquement le verrouillage de force, l'au moins un anneau (24) est disposé dans un trou borgne (24a) du support de transducteur de mesure (22), et l'au moins un anneau entoure le fil d'acier (23) dans le support de transducteur de mesure au moins par zones, et des moyens (26) pour exercer une pression sur l'au moins un anneau (24) dans la direction axiale du fil d'acier (23) sont prévus.
  10. Dispositif selon la revendication 9,
    caractérisé en ce que
    des moyens pour exercer une pression sont prévus par l'intermédiaire d'un manchon fileté (26), qui présente une ouverture pour le fil d'acier (23) et qui peut être vissé dans le support de transducteur de mesure (22).
  11. Dispositif selon l'une des revendications 6 à 10,
    caractérisé en ce que
    le support de transducteur de mesure (22) présente, à l'extrémité opposée au transducteur de mesure (23), un autre trou de forage (27) au moyen duquel il peut être relié par verrouillage positif et/ou par verrouillage de force à une unité de mesure (21), préférentiellement vissée à l'unité de mesure (21).
  12. Dispositif selon l'une des revendications 1 à 11,
    caractérisé en ce que
    le dispositif présente un dispositif d'affichage (28), sur lequel les valeurs de mesure des capteurs de distance (5, 6, 7), préférentiellement de tous les capteurs de distance, sont représentées graphiquement, numériquement ou par des couleurs de signal.
  13. Dispositif selon l'une des revendications 1 à 12,
    caractérisé en ce que
    le dispositif présente plusieurs lingotières (2) et plusieurs blocs de coulée (4) associés, qui sont disposés sur une table de coulée (3) de manière à pouvoir être abaissés, dans lequel les lingotières (2) et les blocs de coulée (4) associés ont des formats identiques et/ou différents.
  14. Procédé de coulée continue d'au moins une barre métallique (1), en particulier d'au moins un lingot de laminage, à partir d'une fonte d'un alliage d'aluminium utilisant un appareil selon l'une des revendications 1 à 13,
    caractérisé en ce qu'
    au moins un capteur de distance (5, 6, 7) mesure la distance entre la surface du bloc de coulée (11) et la surface du pied de la barre métallique (12) tournée vers le bloc de coulée (4) pendant la coulée continue, dans lequel l'au moins un capteur de distance (5, 6, 7) est disposé dans le bloc de coulée (4) à une distance d'au plus +/- 0,5 cm ou sur la ligne centrale s'étendant perpendiculairement au côté large de la lingotière (2) de la surface du bloc de coulée (11) du bloc de coulée.
  15. Procédé selon la revendication 14,
    caractérisé en ce que
    les résultats de mesure d'au moins un capteur de distance (5, 6, 7) sont affichés ou représentées de manière visible pendant la coulée continue.
  16. Procédé selon la revendication 14 ou 15,
    caractérisé en ce que
    le processus de coulée continue est commandé au moins dépendant des données de mesure d'au moins un capteur de distance (5, 6, 7) évaluées dans une unité d'évaluation.
EP18164586.2A 2018-03-28 2018-03-28 Procédé destiné à la coulée continue d'une structure métallique à l'aide d'une lingotière et d'une brique de coulée Active EP3546086B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18164586.2A EP3546086B1 (fr) 2018-03-28 2018-03-28 Procédé destiné à la coulée continue d'une structure métallique à l'aide d'une lingotière et d'une brique de coulée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18164586.2A EP3546086B1 (fr) 2018-03-28 2018-03-28 Procédé destiné à la coulée continue d'une structure métallique à l'aide d'une lingotière et d'une brique de coulée

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EP3546086B1 true EP3546086B1 (fr) 2021-01-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4185422B1 (fr) * 2020-07-23 2024-06-05 Novelis, Inc. Système et procédé de surveillance de détachement de lingot à partir d'un bloc inférieur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12023727B2 (en) 2021-05-11 2024-07-02 Wagstaff, Inc. Starting head for a continuous casting mold and associated method
WO2022240953A1 (fr) * 2021-05-11 2022-11-17 Wagstaff, Inc. Tête de démarrage pour moule de coulée continue et moule de coulée continue associé

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3049881A1 (fr) * 2016-04-08 2017-10-13 Constellium Issoire Systeme de controle de la coulee d'un produit

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Publication number Priority date Publication date Assignee Title
JPS62161446A (ja) * 1986-01-08 1987-07-17 Toshiba Corp ダミ−バ−切離制御装置
AT512214B1 (de) * 2011-12-05 2015-04-15 Siemens Vai Metals Tech Gmbh Prozesstechnische massnahmen in einer stranggiessmaschine bei giessstart, bei giessende und bei der herstellung eines übergangsstücks

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3049881A1 (fr) * 2016-04-08 2017-10-13 Constellium Issoire Systeme de controle de la coulee d'un produit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4185422B1 (fr) * 2020-07-23 2024-06-05 Novelis, Inc. Système et procédé de surveillance de détachement de lingot à partir d'un bloc inférieur

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