WO2009119824A1 - Procédé de commande d'un dispositif de buse coulissante et plaque utilisée pour celui-ci - Google Patents

Procédé de commande d'un dispositif de buse coulissante et plaque utilisée pour celui-ci Download PDF

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Publication number
WO2009119824A1
WO2009119824A1 PCT/JP2009/056341 JP2009056341W WO2009119824A1 WO 2009119824 A1 WO2009119824 A1 WO 2009119824A1 JP 2009056341 W JP2009056341 W JP 2009056341W WO 2009119824 A1 WO2009119824 A1 WO 2009119824A1
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WIPO (PCT)
Prior art keywords
plate
sliding
rate
nozzle device
average
Prior art date
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PCT/JP2009/056341
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English (en)
Japanese (ja)
Inventor
俊治 定野
順也 矢野
博幸 東福
賢一 原田
晶 大塚
Original Assignee
黒崎播磨株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 黒崎播磨株式会社 filed Critical 黒崎播磨株式会社
Priority to CA2718307A priority Critical patent/CA2718307A1/fr
Priority to EP09724351A priority patent/EP2272604A1/fr
Priority to US12/934,469 priority patent/US20110062193A1/en
Priority to JP2010505856A priority patent/JP5433566B2/ja
Priority to AU2009229793A priority patent/AU2009229793B2/en
Publication of WO2009119824A1 publication Critical patent/WO2009119824A1/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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/38—Means for operating the sliding gate
    • 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
    • B22D11/18—Controlling or regulating processes or operations for pouring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/28—Plates therefor

Definitions

  • the present invention relates to a control method of a sliding nozzle device installed at the bottom of a ladle used in a continuous casting facility, and a plate used in the method.
  • the flow rate of molten steel injected from the ladle into the tundish is controlled by a sliding nozzle device.
  • a sliding nozzle device a plurality of refractory sliding nozzle plates (hereinafter, “sliding nozzle plates” may be simply referred to as “plates”) having nozzle holes are used. Then, the flow rate of the molten steel is controlled by adjusting the nozzle hole opening degree by sliding at least one plate while sandwiching the plurality of plates at high pressure.
  • control method of the sliding nozzle device there is a method of measuring the molten steel weight in the tundish and adjusting the opening / closing degree of the nozzle hole according to the deviation between the measured value and the reference set value or the change rate of the molten steel weight.
  • two kinds of plate sliding distances (control constants) such as large and small are set in advance, and these two kinds of output signals are set according to the magnitude of the deviation.
  • a pulse signal is transmitted from the control device. Further, the cycle of outputting the pulse signal is also controlled by a preset value (control constant) such as 5 seconds.
  • the plate When the opening / closing degree of the nozzle hole is controlled by the above control method, the plate may be slid frequently because the molten steel level is kept constant regardless of the operating conditions. As a result, there is a problem that the plate wears out and the number of times the plate is used is greatly limited.
  • Patent Document 1 and Patent Document 2 even when there is a deviation between the measured value of the molten steel weight in the tundish and the reference set value, the direction of change in the measured value is a direction approaching the reference set value.
  • Patent Document 3 discloses a control method for a sliding nozzle device that adjusts the opening of a nozzle hole based on the relationship between the molten steel head in the ladle (ladder), the opening of the nozzle hole, and the ladle pouring flow rate. Yes.
  • Patent Document 4 describes that the plate shape is economical as long as the molten steel does not leak by defining the distance from the edge of the nozzle hole of the plate to the end of the plate.
  • the nozzle hole When the steel type is changed in the casting operation, the molten steel components change, so the nozzle hole is likely to be clogged, or conversely, the nozzle hole progresses and the amount of molten steel discharged from the plate changes. There is. Also, when the nozzle hole diameter is changed, the amount of molten steel discharged from the plate changes. Specifically, when inclusions adhere to the nozzle hole and the cross-sectional area decreases, the flow rate of the molten steel is small at the initially set sliding distance, so the nozzle hole area is continuously increased. It may move twice or three degrees. As a result, the number of sliding times becomes excessive. On the other hand, when the nozzle hole diameter is increased, the nozzle hole is excessively opened by one sliding operation, so that it must be slid in the opposite direction in a short time, and the number of sliding operations is increased.
  • the wear of a plate includes an edge fusing Q (see FIG. 10A) in which the edge portion of the nozzle hole is melted at the time of injection, and a stroke damage R in which the sliding surface of the plate is damaged by the sliding operation of the plate.
  • edge fusing Q see FIG. 10A
  • stroke damage R the more the number of sliding times or sliding distance of the plate, the larger these two types of melting damage. If the wear of these plates increases, molten steel leakage may occur. Therefore, as disclosed in Patent Document 4, the plate stroke length must be at least twice the nozzle hole diameter. For this reason, there has been a limit in reducing the overall length of the plate.
  • the present invention has been made in view of the above-described problems, and a sliding nozzle capable of automatically optimizing the sliding state of the sliding nozzle device and extending the life of the plate even when the operation condition is changed. It is an object of the present invention to provide a method for controlling an apparatus and a plate used therefor. Another object of the present invention is to provide a sliding nozzle device control method capable of reducing the degree of wear of the plate and shortening the stroke length of the plate, and a plate used therefor.
  • the molten steel weight in the tundish is measured, and the deviation between the measured value and the reference set value is calculated.
  • the average integrated sliding rate of the plate (% / Min) is calculated, and if the average integrated sliding rate (% / min) of the plate is out of the preset control range, the sliding rate of the plate is changed within a preset setting range. It is characterized by that.
  • the sliding rate (%) is a value obtained by dividing the sliding distance of one plate for performing flow rate control by the nozzle hole diameter before use of the plate. This is because in the control of the molten steel flow rate by the sliding nozzle device, the molten steel flow rate per unit time varies depending on the nozzle hole diameter, and the sliding distance of the plate also varies depending on the nozzle hole diameter.
  • the average integrated sliding rate of the plate refers to an average value per predetermined time concerning the integrated sliding rate of the plate, which is the product of the sliding rate and the number of sliding times.
  • the inventors of the present invention have a large influence on the plate life, which is the product of the sliding rate and the number of sliding times, and this cumulative sliding rate is within the optimum range. It was found that the sliding state of the sliding nozzle device can be automatically optimized even if the operating conditions change.
  • the first invention is based on the above findings.
  • the management width relating to the average cumulative sliding rate of the plate is 0.5 (% / min) or more and 18 (% / min) or less. And When the average cumulative sliding rate is less than 0.5 (% / min), the management accuracy of the molten steel weight in the tundish is reduced, and when the average cumulative sliding rate exceeds 18 (% / min) The life of the plate is reduced.
  • the setting range relating to the sliding rate of the plate is 3% or more and 20% or less.
  • the sliding rate of the plate is less than 3%, the management accuracy of the molten steel weight in the tundish is lowered, and when the sliding rate of the plate exceeds 20%, the life of the plate is lowered.
  • the second invention is a method of controlling a sliding nozzle device used in a ladle, characterized in that the average sliding rate of the plates constituting the sliding nozzle device is 3% or more and 20% or less.
  • the sliding distance of the plate also differs depending on the nozzle hole diameter. For this reason, the average value of the sliding rate for 60 minutes is adopted as a control parameter to define the value.
  • the average sliding rate is 3% to 20%, more preferably 5% to 15%.
  • the average sliding rate exceeds 20%, stroke damage increases and the life of the plate is reduced. Furthermore, since the number of times of sliding increases, stroke damage increases and the life of the plate decreases.
  • the average sliding rate is less than 3%, the weight fluctuation range of the tundish becomes large, and the flow rate controllability becomes insufficient.
  • the degree of wear of the plate can be reduced by setting the average sliding rate to 3% or more and 20% or less to minimize the sliding distance of the plate. Further, by reducing the average sliding rate, the number of sliding times can be reduced, so that the degree of wear of the plate is further reduced.
  • the number of sliding times of the plate is 10 to 60 times per 60 minutes.
  • the number of sliding of the plate is 10 times or more and 60 times or less per 60 minutes, more preferably 10 times or more and 30 times or less. Is to be reduced.
  • the number of sliding times of the plate exceeds 60 times per 60 minutes, the degree of wear of the plate is increased and the life of the plate is shortened.
  • the number of sliding times of the plate is less than 10 per 60 minutes, the weight fluctuation range of the tundish becomes large and the flow rate controllability becomes insufficient.
  • the stroke length of the plate is 1.5 times or more and less than 2 times the diameter of the nozzle hole formed in the plate. If the stroke length of the plate is less than 1.5 times the nozzle hole diameter, the plate wear is insufficient and the life is shortened. On the other hand, if it is twice or more, the difference in lifetime is almost eliminated, but the total length of the plate becomes long.
  • the stroke length of the plate is a position where the distance between the nozzle hole center of the plate and the nozzle hole center of the mating plate in contact with the plate is maximum in the sliding nozzle device in which the plate is used.
  • FIG. 2 shows a position where the distance between the nozzle holes is maximum in the sliding nozzle device in which the plate is used, and the stroke length of the upper plate is the nozzle hole center A of the upper plate and the nozzle hole center of the lower plate. Is a distance S between the upper plate and the virtual point B corresponding to.
  • the plate used in the control method of the sliding nozzle device according to the first and second inventions has a stroke length of 1.5 times or more and less than 2 times the nozzle hole diameter.
  • the control method of the sliding nozzle device when the average integrated sliding rate of the plate is out of the management range, the operating condition is changed by changing the sliding rate of the plate within a preset setting range. Even in this case, it is possible to automatically optimize the sliding state of the sliding nozzle device. As a result, the degree of damage to the plate is reduced, and the durability of the plate can be improved. Furthermore, the plate can be reduced in size.
  • the plate size can be reduced by setting the stroke length of the plate to 1.5 times or more and less than 2 times the nozzle hole diameter.
  • the sliding nozzle plate consists of two plates, an upper plate (fixed plate) and a lower plate (sliding plate) will be described.
  • the upper plate upper fixed plate
  • the middle plate sliding plate
  • the lower plate The same applies to the case of three plates (lower fixed plates).
  • FIG. 1 shows the configuration of a sliding nozzle device 10 to which the control methods according to the first and second embodiments of the present invention are applied.
  • the sliding nozzle device 10 includes a plate 13 (sliding nozzle plate) and sliding means for sliding the plate 13.
  • the plate 13 includes an upper plate 13u and a lower plate 13d, and nozzle holes 14u and 14d are formed, respectively.
  • the upper plate 13u is fixed to the bottom surface of the ladle 11 via a fixed metal frame 18, and the upper nozzle 15 is connected to the nozzle hole 14u.
  • the lower plate 13d is fixed on the slide metal frame 17 disposed inside the open / close metal frame 19 provided to be openable / closable with respect to the fixed metal frame 18, and slides along the lower surface of the upper plate 13u.
  • the lower nozzle 16 is connected to the nozzle hole 14d of the lower plate 13d.
  • the fixed metal frame 18 extends in the sliding direction of the slide metal frame 17, and a hydraulic cylinder 20 is installed at one end in the extending direction.
  • the tip of the rod 20 a of the hydraulic cylinder 20 is connected to one end of the slide metal frame 17.
  • a load cell 23 for measuring the weight of molten steel in the tundish 12 is installed on the bottom surface of the tundish 12 disposed immediately below the ladle 11.
  • the output of the load cell 23 is input to the control device 22, and the control device 22 outputs a control signal corresponding to the output value of the load cell 23 to the hydraulic unit 21.
  • the hydraulic unit 21 operates the hydraulic cylinder 20 in accordance with the control signal to slide the slide metal frame 17.
  • the output signal of the load cell 23 installed on the bottom surface of the tundish 12 is taken into the control device 22 (S1).
  • the control device 22 is a device that automatically controls the conventional sliding nozzle device, and calculates the control force of the hydraulic cylinder 20 based on the deviation between the output signal of the load cell 23 and the reference set value. Then, a control signal is output to the hydraulic unit 21, and the hydraulic unit 21 drives the hydraulic cylinder 20 based on the control signal to slide the lower plate 13d to control the opening / closing degree of the nozzle hole (S2).
  • the control of the opening / closing degree is the same as the method disclosed in Patent Document 1 or the like, that is, as shown in Table 1, the reference set value of the molten steel and the range of the change rate of the molten steel weight are set in advance, This determines the type of control signal.
  • the output period of the control signal is set to 5 seconds.
  • K is the rate of change in molten steel weight (kg / 5 sec), and A is a constant.
  • “Closed” means a pulse signal for sliding the sliding plate small in the direction in which the opening area of the nozzle hole decreases, and “Closed” means sliding in the direction in which the opening area of the nozzle hole becomes small. This is a pulse signal for sliding the moving plate greatly.
  • “Open small” is a pulse signal for sliding the sliding plate small in the direction in which the opening area of the nozzle hole is large.
  • Open large is This is a pulse signal for sliding the sliding plate greatly in the direction in which the opening area of the nozzle hole increases.
  • the sliding rate of “closed small” and “open small” is 6%
  • the sliding rate of “closed large” and “open large” is 12%. In “holding”, the sliding plate is not slid.
  • control device 22 adjusts the control constant related to the sliding distance of the plate in the following procedure for the optimization of the control.
  • the average integrated sliding rate (% / min) of the plate is calculated (S3).
  • the average integrated sliding rate (% / min) of the plate is calculated from the integrated sliding rate (%) of the plate and the number of times of plate sliding (times) in a predetermined time.
  • the plate integrated sliding rate (%) is calculated from the type of control signal and the number of transmissions for sliding the initially set plate. For example, in Table 1, when the opening (12%) is twice, the closing (12%) is once, the closing (6%) is once, and the holding is twice in the past 10 minutes, The cumulative sliding rate for 10 minutes is 42%. Further, since the number of transmissions of the control signal for sliding the plate during this period is 4, the average integrated sliding rate of the plate for 10 minutes is 10.5% / min.
  • the control signal for sliding the plate is measured by measuring each control signal (pulse signal) and the sliding distance of the plate with surface pressure applied before the plate is used.
  • the sliding rate can be set.
  • a position sensor may be provided in a driving device such as a hydraulic cylinder, and the measurement result may be used as the sliding distance of the plate. Further, the actual sliding distance of the plate may be measured.
  • the time to calculate the average integrated sliding rate (% / min) of this plate is a time that goes back at least 5 minutes from the time of calculation (when the control signal is output). If it is less than 5 minutes, the accuracy of the average cumulative sliding rate (% / min) will be reduced.
  • the average integrated sliding rate for the integrated data from immediately after is calculated. Further, any specific time from 5 minutes to 60 minutes may be determined retroactively as the starting point when the control signal is output.
  • the sliding rate of the plate is more preferably set to be in the range of 3% to 20%.
  • the sliding rate of the plate is less than 3%, the management accuracy of the molten steel weight in the tundish is lowered, and when the sliding rate of the plate exceeds 20%, the life of the plate is lowered.
  • the average value can be obtained. For example, in Table 1, there are cases where the sliding rate of the plate is 6% and 12% as a control signal, and the average sliding rate in this case is 9%.
  • the plate sliding speed or control signal output cycle is similarly controlled by setting a predetermined management width and making the control constant variable.
  • the accuracy of the example control method can be improved.
  • step S5 If the average cumulative sliding rate of the plate is within the range of the control width, it is determined whether or not casting is finished (S5). (7) If casting has not been completed yet, the process returns to step S1 and the procedures after (1) are executed. On the other hand, when casting is completed, the sliding nozzle device 10 is stopped.
  • the cycle (min) of the molten steel weight in the tundish and / or the inflection of the molten steel weight in the tundish By managing the number of points (times / minute), the accuracy of flow rate control can be further increased.
  • FIG. 4 shows the change in the time history of the deviation between the molten steel weight in the tundish and the standard set value.
  • FIG. 4 shows the result of control performed by the control method shown in the flow of FIG. 3 in the sliding nozzle device of FIG.
  • the average integrated sliding rate of the plate was 20% / min, which was outside the range of this example.
  • the control constant related to the plate sliding distance was changed to change the plate sliding rate.
  • the average integrated sliding rate of the plate was 9% / min. That is, the sliding distance of the lower plate is reduced, the number of sliding times is reduced, and the life of the plate is extended. Further, in FIG. 4, the fluctuation period of the weight deviation is longer than when the control is turned on.
  • Fig. 5 shows the relationship between the plate life and the average integrated sliding rate of the plate. If the average cumulative sliding rate of this plate is 18 (% / min) or less, the life of the plate will be longer, and if the average cumulative sliding rate (% / min) is 12 (% / min) or less, the service life will be longer. It turns out that becomes longer. When the average integrated sliding rate exceeds 18 (% / min), the plate edge melts and the stroke damage increases, and the life is shortened.
  • Fig. 6 shows the relationship between the plate life and the average sliding rate of the plate.
  • the average integrated sliding rate was 18% or less. It can be seen that when the average sliding rate of the plate is 20% or less, the life of the plate becomes longer, and when the average sliding rate is 10% or less, the lifetime becomes longer. When the average sliding rate exceeds 20%, the edge melting of the plate and the stroke damage are increased and the life is shortened.
  • Fig. 7 shows the relationship between plate life and stroke length / nozzle hole diameter.
  • the test was performed by changing only the stroke length of the plate by changing the setting of the sliding nozzle device.
  • Each stroke length was tested using three plates and evaluated by the average value of the plate life. As a result of the test, it was found that when the stroke length was less than 1.5 times the nozzle hole diameter, the plate life decreased rapidly, but even if the stroke length was doubled or more, there was no significant change in the plate life. .
  • the plate used has a length of 600 mm, a width of 260 mm, a thickness of 50 mm, and a nozzle hole diameter of 85 mm.
  • a type in which tar was impregnated with an alumina carbon material having an Al 2 O 3 content of 80% or more was used.
  • the surface pressure during the test was 100 kN, the casting time was 45 to 55 minutes for one charge, and the ladle capacity was 300 tons.
  • the number of sliding times and the sliding distance (mm) were measured by an operator staying near the sliding nozzle device.
  • count of sliding measured the sliding distance and the frequency
  • the number of sliding times and the sliding distance include the plate sliding for stopping the plate nozzle hole at a predetermined opening at the start of sliding, the plate for stopping the discharge of molten steel at the end of casting and in an emergency. Sliding is excluded. 5 and 6 were performed by changing the sliding speed of the plate, the sliding distance of the plate, the width of the dead zone in which the position of the plate is held, the output cycle, and the like.
  • the sliding distance of the plate 13 when the average sliding rate of the plate 13 is 20% is 0.2D, and when the average sliding rate of the plate 13 is 3%.
  • the sliding distance of the plate 13 is 0.03D. Since the lower plate 13d is controlled by a pulse output from the control device 22, when the lower plate 13d is controlled by two kinds of pulses, a large pulse and a small pulse, the sliding distance by the large pulse is 0.2D or less. If the sliding distance by a small pulse is 0.03D or more, the average sliding rate of the plate 13 is theoretically 3% or more and 20% or less. The same applies when a plurality of pulses are used. That is, the sliding distance by the maximum pulse may be 0.2D or less, and the sliding distance by the minimum pulse may be 0.03D or more.
  • FIG. 8 is a graph showing the relationship between the plate life and the average sliding rate.
  • the plate life on the vertical axis of the graph indicates the number of charges that could be used, and the operator visually observed the edge melting and stroke damage on the surface of the plate used to determine whether or not it could be reused.
  • a plate having a length of 600 mm, a width of 260 mm, a thickness of 50 mm, and a nozzle hole diameter of 85 mm was used.
  • the plate used was a type in which tar was impregnated with an alumina carbon material having an Al 2 O 3 content of 80% or more.
  • the stroke of the plate sliding means of the sliding nozzle device 10 is 160 mm, and the stroke length S of the plate 13 is 160 mm (see FIG. 2).
  • the surface pressure during the test was 100 kN, the casting time was 45 to 55 minutes per charge, and the ladle capacity was 300 tons.
  • the sliding frequency of the plate 13 was also controlled by using the sliding nozzle device control method described in Japanese Patent Application Laid-Open No. 62-158556.
  • the control method of the sliding nozzle device described in Japanese Patent Application Laid-Open No. 62-158556 when the measured value by the load cell 23 is within the dead zone provided near the reference set value, or the measured value is outside the dead zone.
  • the deviation from the reference set value is within a predetermined value and the measured value is approaching the reference set value, the position of the plate is held.
  • the number of sliding of the plate was controlled by adjusting the setting of the sliding speed of the plate, the setting of the sliding distance of the plate, and the width of the dead zone in which the position of the plate was maintained.
  • the control range of the molten steel weight in the tundish was set within ⁇ 1% by mass.
  • the number of sliding times and the sliding distance (mm) were measured under the same conditions as the control method of the sliding nozzle device according to the first embodiment described above, and the average sliding rate was calculated by the above formula. .
  • the number of sliding times is divided into groups of 10 times, and the plate life at each average sliding rate is plotted.
  • FIG. 8 shows that the life of the plate increases as the average sliding rate decreases. Specifically, it can be seen that when the average sliding rate is 20% or less, the life of the plate is greatly increased, whereas when the average sliding rate exceeds 20%, the life of the plate is extremely reduced. Also, the smaller the number of sliding times, the longer the life of the plate. In particular, when the number of sliding times is 10 to 30, the plate has the longest life. When the number of sliding times exceeds 60, the plate life is 7 times or less even if the average sliding rate is lowered. When the average sliding rate is less than 3% or the number of sliding times is less than 10, the control range of the molten steel weight in the tundish exceeds ⁇ 3%, and the flow controllability is slightly reduced. .
  • the plate was used by changing only the stroke length by changing the setting of the sliding nozzle device in the plate used in FIG.
  • the test conditions other than the conditions in which the number of sliding times is 21 to 30 times and the average sliding rate is in the range of 10 to 15% are the results obtained by the same method as in FIG.
  • the test was performed using three plates at each stroke length, and the average value of the plate life was evaluated. As a result of the test, it was found that when the stroke length was less than 1.5 times the nozzle hole diameter, the plate life decreased rapidly, but even if the stroke length was doubled or more, there was no significant change in the plate life. .
  • the flow rate of molten steel from the tundish to the mold is controlled with high accuracy. For this reason, in the control of the flow rate of molten steel from the ladle to the tundish, even if the fluctuation in the amount of molten steel in the tundish is somewhat increased by reducing the number of sliding of the plate, the fluctuation will be from the tundish to the mold. Can be absorbed by controlling the flow rate of molten steel.
  • control range of the molten steel weight in the tundish is preferably in the range of ⁇ 3% by mass, more preferably in the range of ⁇ 1% by mass, so that the influence on the tundish level fluctuation is small, and the product It does not adversely affect the quality of the steel.
  • the present invention can be used in a sliding nozzle device that controls the flow rate of molten steel injected from a ladle into a tundish. At this time, according to the present invention, it is possible to automatically optimize the sliding state of the sliding nozzle device even if the operating conditions are changed. In addition, the degree of wear of the plate is reduced, and the service life is greatly improved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

La présente invention se rapporte à un procédé de commande d'un dispositif de buse coulissante qui permet de prolonger la durée de vie d'une plaque (13) et de réduire le degré d'usure et la longueur de course de la plaque (13) en optimisant automatiquement l'état coulissant du dispositif de buse coulissante (10), même lorsque les conditions de fonctionnement sont modifiées ; et à la plaque (13) utilisée à cet effet. Lorsque la vitesse de coulissement moyenne intégrée de la plaque (13) provient d'une largeur de commande lors de la commande du dispositif de buse coulissante (10), la vitesse de coulissement de la plaque (13) est modifiée selon une plage prédéterminée de sorte que l'état coulissant du dispositif de buse coulissante (10) puisse être automatiquement optimisé même lorsque les conditions de fonctionnement sont modifiées. En outre, le degré d'usure de la plaque (13) peut être réduit et sa durée de vie peut être prolongée de manière remarquable en établissant la vitesse de coulissement moyenne entre 3 et 20 %.
PCT/JP2009/056341 2008-03-27 2009-03-27 Procédé de commande d'un dispositif de buse coulissante et plaque utilisée pour celui-ci WO2009119824A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA2718307A CA2718307A1 (fr) 2008-03-27 2009-03-27 Procede de commande d'un dispositif de buse coulissante et plaque utilisee pour celui-ci
EP09724351A EP2272604A1 (fr) 2008-03-27 2009-03-27 Procédé de commande d'un dispositif de buse coulissante et plaque utilisée pour celui-ci
US12/934,469 US20110062193A1 (en) 2008-03-27 2009-03-27 Method of controlling sliding nozzle device and plate used therefor
JP2010505856A JP5433566B2 (ja) 2008-03-27 2009-03-27 スライディングノズル装置の制御方法及びそれに使用されるプレート
AU2009229793A AU2009229793B2 (en) 2008-03-27 2009-03-27 Method of controlling sliding nozzle device and plate used therefor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2008084183 2008-03-27
JP2008-084183 2008-03-27
JP2008092535 2008-03-31
JP2008-092535 2008-03-31

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WO2009119824A1 true WO2009119824A1 (fr) 2009-10-01

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US (1) US20110062193A1 (fr)
EP (1) EP2272604A1 (fr)
JP (1) JP5433566B2 (fr)
AU (1) AU2009229793B2 (fr)
CA (1) CA2718307A1 (fr)
WO (1) WO2009119824A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014000585A (ja) * 2012-06-19 2014-01-09 Kobe Steel Ltd 取鍋ノズルの使用方法
KR101974335B1 (ko) * 2017-11-10 2019-09-05 주식회사 포스코 노즐 주입구 지금 제거 장치 및 이를 이용하는 노즐 주입구 지금 제거방법
JP2020157359A (ja) * 2019-03-27 2020-10-01 黒崎播磨株式会社 開閉用装置

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JP2014000585A (ja) * 2012-06-19 2014-01-09 Kobe Steel Ltd 取鍋ノズルの使用方法
KR101974335B1 (ko) * 2017-11-10 2019-09-05 주식회사 포스코 노즐 주입구 지금 제거 장치 및 이를 이용하는 노즐 주입구 지금 제거방법
JP2020157359A (ja) * 2019-03-27 2020-10-01 黒崎播磨株式会社 開閉用装置
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JP7208845B2 (ja) 2019-03-27 2023-01-19 黒崎播磨株式会社 開閉用装置
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AU2009229793A1 (en) 2009-10-01
AU2009229793B2 (en) 2012-07-05
CA2718307A1 (fr) 2009-10-01

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