WO2018163589A1 - Sliding gate device - Google Patents

Sliding gate device Download PDF

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Publication number
WO2018163589A1
WO2018163589A1 PCT/JP2018/000171 JP2018000171W WO2018163589A1 WO 2018163589 A1 WO2018163589 A1 WO 2018163589A1 JP 2018000171 W JP2018000171 W JP 2018000171W WO 2018163589 A1 WO2018163589 A1 WO 2018163589A1
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WO
WIPO (PCT)
Prior art keywords
communication hole
plate
molten steel
slide
divided
Prior art date
Application number
PCT/JP2018/000171
Other languages
French (fr)
Japanese (ja)
Inventor
吉田　毅
智博 余多分
絋高 大田
Original Assignee
東京窯業株式会社
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.)
Filing date
Publication date
Application filed by 東京窯業株式会社 filed Critical 東京窯業株式会社
Publication of WO2018163589A1 publication Critical patent/WO2018163589A1/en

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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
    • B22D11/10—Supplying or treating molten metal
    • 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
    • B22D41/24—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 characterised by a rectilinearly movable plate
    • 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
    • B22D41/26—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 characterised by a rotatively movable plate

Definitions

  • the present invention relates to a sliding gate device in which a slide plate is slid relative to a fixed plate in order to control outflow of molten steel from a molten steel container to the outside.
  • a sliding gate device disposed at the outlet of a molten steel container such as a ladle is known (for example, see Patent Document 1).
  • This sliding gate device includes a fixed plate and a slide plate.
  • the fixed plate is attached and fixed to the molten steel container, and has a circular communication hole communicating with the outlet of the molten steel container.
  • the slide plate can be slid with respect to the fixed plate, and has a circular communication hole that can communicate with the communication hole of the fixed plate.
  • a plurality of communication holes of the slide plate are provided apart from each other in the circumferential direction, and these communication holes have different diameters.
  • the slide plate while the surface pressure is applied between the fixed plate and the slide plate, the slide plate is rotated and slid with respect to the fixed plate by a motor or the like. It communicates with the communication hole. When such communication is performed, the molten steel in the molten steel container flows out to the outside through the communication hole of the fixed plate and the communication hole of the slide plate.
  • the communication is performed by selecting any one of a plurality of communication holes of the slide plate, and the communication hole of the slide plate is communicated with the communication hole of the fixed plate with a size of 100% (fully opened state). Is. Accordingly, since the communication holes of the slide plate to be communicated with the communication holes of the fixed plate are selected and switched from among a plurality, the communication is performed so that the circular communication holes overlap with each other without causing a center shift.
  • the outflow amount of the molten steel can be appropriately controlled without turbulently flowing the molten steel flowing out of the container.
  • the structure in which a plurality of communication holes having different hole diameters are provided in the slide plate in the circumferential direction as described above is not suitable for so-called continuous casting, and is not suitable for so-called continuous casting.
  • the outflow of the molten steel must be stopped even for each change. For this reason, the change in the flow rate becomes discontinuous, and the quality deteriorates.
  • the centers of the holes do not match and the opening shape by both the communication holes may become distorted. Molten steel flowing out of the container may turbulent.
  • the present invention has been made to solve the above-described problems, and smoothly expands / contracts the communication hole of the slide plate that communicates with the communication hole of the fixed plate, and without turbulent flow of the molten steel flowing out of the molten steel container.
  • An object of the present invention is to provide a sliding gate device capable of appropriately controlling the outflow amount of the molten steel.
  • the invention according to claim 1, which has been made to solve the above-mentioned problem, is formed of three or more divided portions arranged around the hole of the communication hole, which form a communication hole communicating with the outflow port of the molten steel container.
  • a sliding gate device comprising: a plate; and a moving device that moves the divided plate in a direction in which the communication hole expands and contracts while maintaining a similar shape.
  • the communication hole formed by three or more divided plates expands and contracts while maintaining a similar shape. For this reason, while the communicating hole connected with the outflow port of a molten steel container can be expanded and contracted smoothly, the outflow amount of the molten steel can be controlled appropriately, without making the molten steel which flows out from a molten steel container turbulently flow.
  • the divided plate has a first side wall facing the communication hole and a second side wall in contact with the first side wall of the divided plate disposed adjacent to the circumferential direction.
  • the dividing plate that is slid along the second side wall of the dividing plate arranged adjacent to the circumferential direction by the moving device and is arranged adjacent to the circumferential direction; This is a sliding gate device whose position is moved so that the contact positional relationship changes.
  • the expansion / contraction of the communication hole is performed without the overlapping of the divided plates, it is possible to prevent molten steel leakage during the expansion / contraction process. Further, the communication holes are expanded and contracted so that the first side wall of the divided plate slides along the second side wall of the adjacent divided plate and the contact positional relationship between the divided plate and the adjacent divided plate changes. The expansion and contraction can be performed while maintaining the similar shape.
  • the dividing plate is formed such that corners formed by the first side wall and the second side wall form an angle corresponding to the number of the dividing plates. It is.
  • the divided plates can be arranged evenly around the holes of the communication holes, it is possible to appropriately perform expansion / contraction between the fully open state and the fully closed state of the communication holes by moving the position of the divided plates. it can.
  • the invention according to claim 4 is a sliding gate device in which expansion / contraction of the communication hole is performed such that an opening area of the communication hole changes in a range of 0% to 100% with respect to an opening area of the outlet. is there.
  • the opening area of the communication hole changes in a range from 0% to 100% with respect to the opening area of the outlet of the molten steel container, the outflow amount of the molten steel can be appropriately controlled.
  • the invention according to claim 5 is a sliding gate device in which expansion / contraction of the communication hole is performed while maintaining a similar shape while matching the center of the communication hole with the center of the outlet.
  • the expansion / contraction of the communication hole is performed while maintaining the similar shape while keeping the center of the communication hole at the center of the outlet of the molten steel container, thereby preventing turbulent flow of the molten steel flowing out of the molten steel container. be able to.
  • FIG. 4 is a cross-sectional view when the sliding gate device according to the present embodiment is cut along IV-IV shown in FIG. 3. It is a block diagram of the moving apparatus which moves the position of the division
  • FIG. 1 and FIG. 2 each show a configuration diagram of a system including a sliding gate device 10 according to an embodiment of the present invention.
  • 1 shows a cross-sectional view at the pouring position
  • FIG. 2 shows a cross-sectional view at the pouring stop position.
  • FIG. 3 shows a top view of the sliding gate device 10 of the present embodiment.
  • FIG. 4 is a cross-sectional view of the sliding gate device 10 according to the present embodiment taken along IV-IV shown in FIG.
  • FIG. 5 shows a configuration diagram of a moving device for moving the position of the divided plate provided in the sliding gate device 10 of the present embodiment.
  • the sliding gate device 10 is a device that is attached to a molten steel container 12 such as a ladle or a tundish.
  • the molten steel container 12 is a container made of, for example, an iron plate in which molten steel that is a high-temperature molten metal for casting is accommodated.
  • a refractory material is disposed inside the molten steel container 12.
  • the bottom of the molten steel container 12 is provided with a hot water outlet 16 for allowing the stored molten steel to flow out.
  • An insert nozzle 18 is attached and fixed to the hot water outlet 16.
  • the insert nozzle 18 is a pouring nozzle inserted into the hot water outlet 16.
  • the insert nozzle 18 is referred to as the upper nozzle 18.
  • the upper nozzle 18 is a member that enables continuous casting and is formed of a material having high fire resistance (for example, alumina carbon produced by blending or kneading alumina or carbon).
  • the sliding gate device 10 is provided corresponding to the upper nozzle 18.
  • the sliding gate device 10 includes a fixed plate 20, a first slide plate 22, and a second slide plate 24.
  • the sliding gate device 10 controls the outflow of the molten steel from the upper nozzle 18 by controlling the communication between communication holes described later as the first slide plate 22 and the second slide plate 24 are slid relative to the fixed plate 20. It has the function to do.
  • the fixed plate 20, the first slide plate 22, and the second slide plate 24 are each a brick member formed in a plate shape.
  • the fixed plate 20, the first slide plate 22, and the second slide plate 24 are arranged so as to overlap in the vertical stacking direction.
  • the second slide plate 24 is disposed between the fixed plate 20 and the first slide plate 22.
  • the second slide plate 24 is slid and moved along the facing surface with respect to the fixed plate 20 while being subjected to a surface pressure load on the fixed plate 20 side.
  • the first slide plate 22 is slid and moved along the facing surface with respect to the second slide plate 24 while being subjected to a surface pressure load on the fixed plate 20 side.
  • size of the surface pressure loaded on the 1st and 2nd slide plate 24 is the 1st and 2nd slide plates 22 and 24 with respect to the fixed plate 20, preventing the molten steel leak from between the plates 20,22,24. Is set to allow relative movement.
  • the fixing plate 20 is an upper plate that is fixed to the molten steel container 12 via the mounting plate 26, and is detachably attached to the mounting plate 26 and eventually the molten steel container 12.
  • the fixed plate 20 has a communication hole 30 that communicates with the outlet 28 of the upper nozzle 18 inserted into the outlet 16 of the molten steel container 12.
  • the communication hole 30 is a nozzle hole through which the molten steel flows, and is provided for pouring the molten steel accommodated in the molten steel container 12 into an external mold or the like.
  • the communication hole 30 has an inner diameter that is substantially the same as the inner diameter of the outlet 28 of the upper nozzle 18.
  • the fixing plate 20 is fixed to the molten steel container 12 so that a positional relationship is established in which the communication hole 30 communicates with the outlet 28 of the upper nozzle 18.
  • the fixed plate 20 may have a cushioning material or a tin plate attached as a cushioning material on the contact surface with the mounting plate 26.
  • the first slide plate 22 is a lower plate that is slidable with respect to the fixed plate 20 and consequently the molten steel container 12.
  • the slide movement of the first slide plate 22 is performed using the slide device 32.
  • the first slide plate 22 is detachably attached to the molten steel container 12 and the slide device 32.
  • the slide device 32 is a device that linearly slides (that is, moves linearly) with respect to the molten steel container 12 and thus the fixed plate 20 by pressing or pulling the first slide plate 22.
  • the slide device 32 performs the sliding movement of the first slide plate 22 using a hydraulic cylinder or a motor.
  • the slide movement of the first slide plate 22 by the slide device 32 is performed linearly along the facing surface.
  • the first slide plate 22 has a communication hole 34 that can communicate with the communication hole 30 of the fixed plate 20.
  • the communication hole 34 is a nozzle hole through which the molten steel flows, and is provided for pouring the molten steel accommodated in the molten steel container 12 into an external mold or the like.
  • the communication hole 34 has an inner diameter substantially the same as the inner diameter of the outlet 28 of the upper nozzle 18 and the communication hole 30 of the fixed plate 20.
  • the slide device 32 includes a position where the first slide plate 22 communicates with the communication hole 30 of the fixed plate 20 (hereinafter referred to as a pouring position A), and the communication hole 34 as the communication hole 30. It can be slid to a position where it does not communicate (hereinafter referred to as a pouring stop position B).
  • the sliding movement of the first slide plate 22 by the slide device 32 is performed such that the distance between the hole centers of the communication hole 30 of the fixed plate 20 and the communication hole 34 of the first slide plate 22 changes.
  • the first slide plate 22 is selectively moved mainly to two positions, a pouring position A and a pouring stop position B.
  • a pouring nozzle 36 is attached and fixed to the first slide plate 22.
  • the pouring nozzle 36 is disposed on the surface of the first slide plate 22 opposite to the fixed plate 20.
  • the pouring nozzle 36 is referred to as a lower nozzle 36.
  • the lower nozzle 36 is a member that is made of a material having high fire resistance (for example, alumina carbon produced by blending or kneading alumina or carbon) and the like, which enables continuous casting.
  • the lower nozzle 36 has an outlet 38 through which molten steel flows.
  • the outlet 38 has an inner diameter that is substantially the same as the inner diameter of the outlet 28 of the upper nozzle 18.
  • the lower nozzle 36 is fixed to the first slide plate 22 so that a positional relationship in which the outlet 38 communicates with the communication hole 34 of the first slide plate 22 is established.
  • the second slide plate 24 is an intermediate plate that is slidable relative to the fixed plate 20 and the first slide plate 22 while being sandwiched between the fixed plate 20 and the first slide plate 22.
  • the second slide plate 24 has a communication hole 40 that can communicate with the outlet 28 of the upper nozzle 18 of the molten steel container 12 through the communication hole 30 of the fixed plate 20.
  • the communication hole 40 is a nozzle hole through which molten steel flows, and is provided for pouring molten steel accommodated in the molten steel container 12 into an external mold or the like.
  • the hole center O ′ of the communication hole 40 coincides with the hole center O of the communication hole 30 of the fixed plate 20.
  • the second slide plate 24 includes a divided plate 42 as a plate piece divided into a plurality of portions around the communication hole 40.
  • a plurality of division plates 42 (specifically, three or more, for example, six) are provided.
  • the plurality of divided plates 42 are annularly arranged around the communication hole 40 without overlapping in the stacking direction of the plates 20, 22, 24.
  • the plurality of divided plates 42 form the communication hole 40 having the annular center as the hole center O ′.
  • the dividing plate 42 has at least two side walls 42a and 42b.
  • the side wall 42 a is a side wall facing the communication hole 40, and can be a part of the communication hole 40.
  • the side wall 42b is a side wall in contact with a side wall 42a of a divided plate (hereinafter referred to as an adjacent divided plate) 42 that is disposed adjacent to the circumferential direction, and slides along the side wall 42a of the adjacent divided plate 42. .
  • the split plate 42 is formed such that a corner formed by the side wall 42a and the side wall 42b forms an angle corresponding to the number of the split plates 42 included in the second slide plate 24.
  • the angle of the corner is, for example, 60 ° when six dividing plates 42 are provided, and 120 ° when three dividing plates 42 are provided.
  • the cross-sectional shape of the communication hole 40 is set in accordance with the shape of the corner portion of the divided plate 42 and in accordance with the number of the divided plates 42.
  • the cross-sectional shape of the communication hole 40 is, for example, a regular hexagon when six division plates 42 are provided, and a regular triangle when three division plates 42 are provided.
  • the slide movement of the second slide plate 24 is performed using the slide device 44.
  • the slide device 44 is provided in one-to-one correspondence for each divided plate 42, and a plurality (specifically, three or more, for example, six) are provided.
  • a plurality specifically, three or more, for example, six
  • six division plates 42 are provided, and the division plates 42-1, 42-2, 42-3, 42-4, 42-5, and 42-6 are appropriately provided.
  • six slide devices 44 are provided corresponding to the divided plates 42, and the slide devices 44-1, 44-2, 44-3, 44-4, 44-5, 44- are respectively provided as appropriate. 6.
  • Each divided plate 42 is detachably attached to the molten steel container 12 and the corresponding slide device 44.
  • Each slide device 44 is a device that linearly slides the molten steel container 12, the fixed plate 20, and the first slide plate 22 by pressing or pulling the corresponding divided plate 42.
  • the pressing direction in which each slide device 44 slides the corresponding divided plate 42 and the normal direction of the side wall 42a facing the communication hole 40 of the divided plate 42 are shifted by a predetermined angle (for example, 30 °).
  • each slide device 44 slides the corresponding divided plate 42 in a pulling direction (that is, a direction different from the pressing direction by 180 °), and a side wall 42b in contact with the side wall 42a of the adjacent divided plate 42 of the divided plate 42. Is deviated from the normal direction by a predetermined angle (for example, 30 °).
  • Each divided plate 42 is a blade piece having a side wall 42a and a side wall 42b.
  • Each slide device 44 linearly slides the corresponding divided plate 42 so that the side wall 42a facing the communication hole 40 slides along the side wall 42b with the side wall 42b of the adjacent divided plate 42 in contact therewith.
  • the side plates 42a of one divided plate 42 slide along the side walls 42b of the other divided plate 42 while maintaining the state in which the divided plates 42 adjacent to each other in the circumferential direction are in contact with each other.
  • the positional relationship of contact between the side walls 42a and 42b changes.
  • the directions in which each slide device 44 linearly slides the corresponding divided plate 42 are different from each other.
  • the slide device 44 is arranged so that the direction in which the corresponding divided plate 42 is slid linearly (that is, the slide direction) is different from that of the other slide devices 44.
  • the slide device 44 is arranged such that the slide direction is shifted by a predetermined angle (for example, 60 ° when six division plates 42 are provided).
  • All the sliding devices 44-1, 44-2, 44-3, 44-4, 44-5, and 44-6 are linked with each other so as to correspond to the corresponding divided plates 42-1, 42-2, 42-3, 42.
  • Slide -4, 42-5 and 42-6 linearly. Therefore, all the divided plates 42 are slid and moved to the same position in relation to the adjacent divided plates 42 that are adjacent to each other at the same timing and in the circumferential direction.
  • the communication holes 40 of the second slide plate 24 are not decentered with respect to the communication holes 30 of the fixed plate 20 (ie, the hole centers O, O ′ (That is, they are not displaced), that is, they expand and contract while maintaining the similar shape while being coincident with the center of the outlet 28 of the molten steel container 12.
  • the expansion / contraction of the communication hole 40 is performed without the divided plates 42 overlapping each other in the stacking direction of the plates 20, 22, 24.
  • the diameters of the circle inscribed and circumscribed in the communication hole 40 change as the divided plate 42 slides.
  • the expansion / contraction of the communication hole 40 is such that the opening area of the communication hole 40 ranges from 0% to 100% with respect to the opening area of the communication hole 30 of the fixed plate 20 or the outlet 28 of the upper nozzle 18 of the molten steel container 12. Done to change.
  • FIG. 6 shows a top view of the dividing plate 42 provided in the sliding gate device 10 of the present embodiment in a fully opened state of the communication hole 40.
  • FIG. 7 shows a top view of the dividing plate 42 provided in the sliding gate device 10 of the present embodiment in a half-open state of the communication hole 40.
  • FIG. 8 is a top view of the dividing plate 42 provided in the sliding gate device 10 of the present embodiment when the communication hole 40 is fully closed.
  • the slide device 32 slides the first slide plate 22 to the pouring position A, and the slide device 44 2
  • the slide plate 42 of the slide plate 24 is slid and moved so that the communication hole 40 is in the fully open state C as shown in FIG.
  • the communication hole 34 of the first slide plate 22 communicates with the outlet 28 of the upper nozzle 18 inserted into the hot water outlet 16 of the molten steel container 12 and the communication hole 30 of the fixed plate 20.
  • the communication hole 40 of the second slide plate 24 communicates with the outlet 28 of the upper nozzle 18 and the communication hole 30 of the fixed plate 20 in a fully open state (that is, an opening degree of 100%).
  • the molten steel accommodated in the molten steel container 12 flows from the outlet 28 of the upper nozzle 18 to the communication hole 30 of the fixed plate 20, the communication hole 40 in the fully opened state of the second slide plate 24, and the first slide plate 22. Then, it flows out toward the outlet 38 of the lower nozzle 36 through the communication hole 34 and is poured into a mold or the like. Accordingly, the communicating holes 34 and 40 of the first and second slide plates 22 and 24 are communicated with the communicating hole 30 of the fixed plate 20 and the outlet 28 of the upper nozzle 18 by the slide devices 32 and 44, so that the inside of the molten steel container 12. It is possible to realize casting by flowing out a molten steel of a predetermined amount or more per unit time.
  • the slide device 32 slides the first slide plate 22 from the pouring position A to the pouring stop position B, or the slide device 44 moves the second slide plate 24.
  • the dividing plate 42 is slid so that the communication hole 40 is in the fully closed state E as shown in FIG.
  • the communication hole 34 of the first slide plate 22 is not communicated with the communication hole 30 of the fixed plate 20, and the outlet 28 of the upper nozzle 18 is closed.
  • the communication hole 40 of the second slide plate 24 has an opening degree of 0% and is not communicated with the communication hole 30 of the fixed plate 20, and the outlet 28 of the upper nozzle 18 is closed. Therefore, in such a state, the outflow of the molten steel accommodated in the molten steel container 12 is stopped, and the above casting is stopped.
  • One slide plate 22 is preferably slid to the pouring stop position B.
  • the slide device 32 slides the first slide plate 22 to the pouring position A.
  • the slide device 44 slides the dividing plate 42 of the second slide plate 24 so that the communication hole 40 is in the half-open state D as shown in FIG.
  • the half-open state D of the communication hole 40 realizes an opening area that increases or decreases in accordance with the required outflow amount of molten steel.
  • the communication hole 40 of the second slide plate 24 is ensured to communicate with the outlet 28 of the upper nozzle 18 and the communication hole 30 of the fixed plate 20.
  • the amount of outflow of molten steel from is reduced. Therefore, the casting which controlled the outflow amount of the molten steel which flows out from the molten steel container 12 by performing this communication is realizable.
  • the communication hole 40 of the second slide plate 24 has its hole center O ′ fixed to the fixed plate 20.
  • the hole center O of the communication hole 30 and the center of the outflow port 28 of the molten steel container 12 are expanded and contracted while maintaining a similar shape.
  • the expansion / contraction of the communication hole 40 is realized by sliding all the divided plates 42 of the second slide plate 24 in conjunction with each other using the slide device 44. The diameters of the inscribed circle and the circumscribed circle are divided. It changes linearly as the plate 42 slides.
  • the expansion and contraction of the communication hole 40 has a similar shape while the hole center O ′ of the communication hole 40 is made to coincide with the hole center O of the communication hole 30 of the fixed plate 20 and the center of the outlet 28 of the molten steel container 12. It is done while keeping. For this reason, the communicating hole 40 of the 2nd slide plate 24 connected to the communicating hole 30 of the fixed plate 20 can be smoothly expanded / contracted by slidingly moving the dividing plate 42 using the slide device 44. Further, the expansion / contraction of the communication hole 40 is performed without the division plates 42 overlapping each other in the stacking direction. For this reason, it is possible to prevent molten steel from leaking during the expansion / contraction process of the communication hole 40.
  • the amount of molten steel flowing out of the molten steel container 12 may be determined according to the degree of opening / closing according to the expansion / contraction of the communication hole 40 of the second slide plate 24 with respect to the communication hole 30 of the fixed plate 20, that is, the outlet 28. Therefore, the outflow amount of the molten steel can be appropriately controlled. Further, in the process in which the degree of opening and closing of the communication hole 40 of the second slide plate 24 changes, the shape of the communication hole 40 is kept similar to a square shape that is close to a circle, and the communication hole 40 of the second slide plate 24 The opening shape overlapping with the communication hole 30 of the fixed plate 20 is kept constant without becoming distorted.
  • the molten steel flowing out from the molten steel container 12 passes through or through the communication hole 40 of the second slide plate 24. It is possible to prevent the molten steel from flowing out due to turbulence.
  • the communication hole 40 of the second slide plate 24 communicated with the communication hole 30 of the fixed plate 20 is smoothly expanded and contracted, and the molten steel flowing out from the molten steel container 12 is turbulently flowed. Therefore, the outflow amount of the molten steel can be appropriately controlled.
  • the second slide plate 24 includes a divided plate 42 divided into a plurality of portions around the hole of the communication hole 40, and the divided plate 42 includes a side wall 42 a facing the communication hole 40 and an adjacent divided plate 42.
  • the corner formed by the side wall 42b in contact with the side wall 42a is formed so as to form an angle corresponding to the number of the divided plates 42 included in the second slide plate 24.
  • segmentation plate 42 can be equally arrange
  • the communication hole 40 is in the “communication hole” described in the claims
  • the slide device 44 is in the “moving device” in the claims
  • the side wall 42a is in the claims.
  • the side wall 42b corresponds to the “second side wall” described in the claims.
  • a plurality of slide devices 44 are provided corresponding to each divided plate 42 on a one-to-one basis.
  • the slide device 100 is provided corresponding to only a part of the divided plates 42 (for example, one) among the divided plates 42.
  • the slide device 100 may be slid and moved by pressing or pulling only some of the divided plates 42, and all the other divided plates 42 are interlocked with the sliding movement of the partial plates 42. May be slid in a desired direction.
  • the pressing direction in which each divided plate 42 is slid in accordance with the sliding movement of the corresponding divided plate 42 by the slide device 100 and the normal direction of the side wall 42a of the divided plate 42 are as follows. They are not coincident with each other, are shifted by a predetermined angle, and the pulling direction in which each divided plate 42 is slid in accordance with the sliding movement of the corresponding divided plate 42 by the slide device 100, and the side wall 42b of the divided plate 42 It is desirable that the normal directions of these are not coincident with each other and are shifted by a predetermined angle.
  • a biasing device 102 such as a spring that biases the dividing plate 42 in the opposite direction.
  • the urging device 102 may be provided on a one-to-one basis corresponding to all the divided plates 42 including the divided plate 42 provided with the slide device 100, or excludes the divided plate 42 provided with the slide device 100.
  • the divided plates 42 may be provided in one-to-one correspondence, or may be provided in units of a plurality of divided plates 42.
  • the slide device 100 that slides and moves the one divided plate 42 to expand and contract the communication hole 40.
  • the dividing plate 42 can be reliably slid in the direction opposite to the pressing direction by the slide device 100 when the communication hole 40 is enlarged. Enlarging can be performed quickly using the biasing device 102.
  • each divided plate 42 is adjacent to the side wall 42a facing the communication hole 40 in the circumferential direction.
  • the corner formed by the side wall 42b in contact with the divided plate 42 to be arranged is formed at an angle of 60 °, and the communication hole 40 is formed in a regular hexagonal cross section.
  • the present invention is not limited to this, as long as three or more divided plates 42 included in the second slide plate 24 are provided.
  • three divided plates 42 included in the second slide plate 24 are provided, and each divided plate 42 has a 120 ° corner formed by the side wall 42a and the side wall 42b. It is good also as applying to what is formed so that an angle may be made and the communicating hole 40 is formed in the cross-section equilateral triangle.
  • four divided plates 42 of the second slide plate 24 are provided, and each divided plate 42 has a 90 ° corner formed by the side wall 42a and the side wall 42b. It is good also as applying to what is formed so that an angle may be made and the communicating hole 40 may be formed in the square cross section.
  • the communication hole 40 is expanded and contracted by using the slide device 44 that slides the dividing plate 42 linearly.
  • the present invention is not limited to this, and the expansion / contraction of the communication hole 40 may be realized using a mechanism that rotates (or swings) each of the divided plates 42 around a predetermined axis. Also in this modification, it is possible to obtain the same effect as the above embodiment.

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

Abstract

This sliding gate device is provided with separate plates which form a communication hole connected with an outlet of a molten steel vessel, in such a manner as to smoothly expand/contract the communication hole of the plate connected with the outlet of the molten steel vessel and appropriately control the outflow of the molten steel without disturbing the flow of the molten steel outputted from the molten steel vessel. Three or more separate plates are arranged separately around the communication hole. The sliding gate device is provided with a slide device which shifts the positions of the separate plates in directions in which the communication hole expands/contracts while retaining a similar shape.

Description

スライディングゲート装置Sliding gate device
　本発明は、溶鋼容器から外部への溶鋼の流出を制御するためにスライドプレートが固定プレートに対してスライド移動されるスライディングゲート装置に関する。 The present invention relates to a sliding gate device in which a slide plate is slid relative to a fixed plate in order to control outflow of molten steel from a molten steel container to the outside.
　従来、取鍋などの溶鋼容器の流出口に配設されたスライディングゲート装置が知られている（例えば、特許文献１参照）。このスライディングゲート装置は、固定プレートと、スライドプレートと、を備えている。固定プレートは、溶鋼容器に取付け固定されており、溶鋼容器の流出口に連通する円形の連通孔を有している。また、スライドプレートは、固定プレートに対してスライド移動されることが可能であり、固定プレートの連通孔に連通し得る円形の連通孔を有している。スライドプレートの連通孔は、互いに周方向に離れて複数個設けられており、これらの連通孔は、互いに異なる孔径を有している。 Conventionally, a sliding gate device disposed at the outlet of a molten steel container such as a ladle is known (for example, see Patent Document 1). This sliding gate device includes a fixed plate and a slide plate. The fixed plate is attached and fixed to the molten steel container, and has a circular communication hole communicating with the outlet of the molten steel container. The slide plate can be slid with respect to the fixed plate, and has a circular communication hole that can communicate with the communication hole of the fixed plate. A plurality of communication holes of the slide plate are provided apart from each other in the circumferential direction, and these communication holes have different diameters.
　上記のスライディングゲート装置においては、固定プレートとスライドプレートとの間に面圧が負荷されながら、スライドプレートがモータ等により固定プレートに対して回転摺動されて、スライドプレートの連通孔が固定プレートの連通孔に連通される。かかる連通がなされると、溶鋼容器内の溶鋼が固定プレートの連通孔及びスライドプレートの連通孔を介して外部に流出される。 In the above sliding gate device, while the surface pressure is applied between the fixed plate and the slide plate, the slide plate is rotated and slid with respect to the fixed plate by a motor or the like. It communicates with the communication hole. When such communication is performed, the molten steel in the molten steel container flows out to the outside through the communication hole of the fixed plate and the communication hole of the slide plate.
　また、上記の連通は、スライドプレートの複数の連通孔のうち何れか一つ選択されて行われ、スライドプレートの連通孔が１００％の大きさ（全開状態）で固定プレートの連通孔に連通されるものである。従って、固定プレートの連通孔に連通させるスライドプレートの連通孔を複数のうちから選択して切り替えつつ、かかる連通が円形の連通孔同士が中心ずれを生じさせることなく重なるように行われるので、溶鋼容器から流出させる溶鋼を乱流させることなく、その溶鋼の流出量を適切に制御することができる。 The communication is performed by selecting any one of a plurality of communication holes of the slide plate, and the communication hole of the slide plate is communicated with the communication hole of the fixed plate with a size of 100% (fully opened state). Is. Accordingly, since the communication holes of the slide plate to be communicated with the communication holes of the fixed plate are selected and switched from among a plurality, the communication is performed so that the circular communication holes overlap with each other without causing a center shift. The outflow amount of the molten steel can be appropriately controlled without turbulently flowing the molten steel flowing out of the container.
特公昭６０－５６５８０号JP-B 60-56580
　しかしながら、上記の如くスライドプレートに互いに孔径の異なる複数の連通孔が互いに周方向に離れて設けられている構造は、いわゆる連続鋳造に適さず、固定プレートの連通孔に連通させるスライドプレートの連通孔の径を変える必要があるときにその切り替えごとに溶鋼の流出を一時的でも停止せざるを得ない。このため、流量変化が不連続になり、品質が悪化するなど、生産性が損われてしまう。また、かかる構造では、固定プレートとスライドプレートとの連通孔同士の中心を一致させる過程で、それらの中心が一致せずに両連通孔による開口形状がいびつなものとなることがあるので、溶鋼容器から流出される溶鋼が乱流することがある。 However, the structure in which a plurality of communication holes having different hole diameters are provided in the slide plate in the circumferential direction as described above is not suitable for so-called continuous casting, and is not suitable for so-called continuous casting. When it is necessary to change the diameter of the steel, the outflow of the molten steel must be stopped even for each change. For this reason, the change in the flow rate becomes discontinuous, and the quality deteriorates. Further, in such a structure, in the process of matching the centers of the communication holes of the fixed plate and the slide plate, the centers of the holes do not match and the opening shape by both the communication holes may become distorted. Molten steel flowing out of the container may turbulent.
　本発明は、上述した課題を解決するためになされたものであり、固定プレートの連通孔に連通させるスライドプレートの連通孔をスムースに拡縮すると共に、溶鋼容器から流出させる溶鋼を乱流させることなく、その溶鋼の流出量を適切に制御することが可能なスライディングゲート装置を提供することを目的とする。 The present invention has been made to solve the above-described problems, and smoothly expands / contracts the communication hole of the slide plate that communicates with the communication hole of the fixed plate, and without turbulent flow of the molten steel flowing out of the molten steel container. An object of the present invention is to provide a sliding gate device capable of appropriately controlling the outflow amount of the molten steel.
　上記した課題を解決するためになされた請求項１記載の発明は、溶鋼容器の流出口に連通する連通孔を形成する、該連通孔の孔回りに分割して配置された３つ以上の分割プレートと、前記分割プレートを、前記連通孔が相似形を保ったまま拡縮する方向に位置移動させる移動装置と、を備えるスライディングゲート装置である。 The invention according to claim 1, which has been made to solve the above-mentioned problem, is formed of three or more divided portions arranged around the hole of the communication hole, which form a communication hole communicating with the outflow port of the molten steel container. A sliding gate device comprising: a plate; and a moving device that moves the divided plate in a direction in which the communication hole expands and contracts while maintaining a similar shape.
　この構成によれば、３つ以上の分割プレートにより形成される連通孔が相似形を保ったまま拡縮する。このため、溶鋼容器の流出口に連通される連通孔をスムースに拡縮すると共に、溶鋼容器から流出させる溶鋼を乱流させることなく、その溶鋼の流出量を適切に制御することができる。 According to this configuration, the communication hole formed by three or more divided plates expands and contracts while maintaining a similar shape. For this reason, while the communicating hole connected with the outflow port of a molten steel container can be expanded and contracted smoothly, the outflow amount of the molten steel can be controlled appropriately, without making the molten steel which flows out from a molten steel container turbulently flow.
　請求項２記載の発明は、前記分割プレートは、前記連通孔に臨む第１側壁と、周方向に隣接して配置される前記分割プレートの前記第１側壁に接する第２側壁と、を有すると共に、前記移動装置により、前記第１側壁が周方向に隣接して配置される前記分割プレートの前記第２側壁に沿って摺動して、該周方向に隣接して配置される前記分割プレートとの接触位置関係が変化するように位置移動されるスライディングゲート装置である。 According to a second aspect of the present invention, the divided plate has a first side wall facing the communication hole and a second side wall in contact with the first side wall of the divided plate disposed adjacent to the circumferential direction. The dividing plate that is slid along the second side wall of the dividing plate arranged adjacent to the circumferential direction by the moving device and is arranged adjacent to the circumferential direction; This is a sliding gate device whose position is moved so that the contact positional relationship changes.
　この構成によれば、連通孔の拡縮が、分割プレートが互いに重なり合うことなく行われるので、その拡縮過程で溶鋼漏れを生じるのを防止することができる。また、連通孔の拡縮が、分割プレートの第１側壁が隣接の分割プレートの第２側壁に沿って摺動して分割プレートと隣接の分割プレートとの接触位置関係が変化するように行われるので、その拡縮を相似形を保ったまま行うことができる。 According to this configuration, since the expansion / contraction of the communication hole is performed without the overlapping of the divided plates, it is possible to prevent molten steel leakage during the expansion / contraction process. Further, the communication holes are expanded and contracted so that the first side wall of the divided plate slides along the second side wall of the adjacent divided plate and the contact positional relationship between the divided plate and the adjacent divided plate changes. The expansion and contraction can be performed while maintaining the similar shape.
　請求項３記載の発明は、前記分割プレートは、前記第１側壁と前記第２側壁とで形成される角部が前記分割プレートの数に応じた角度をなすように形成されているスライディングゲート装置である。 According to a third aspect of the present invention, in the sliding plate device, the dividing plate is formed such that corners formed by the first side wall and the second side wall form an angle corresponding to the number of the dividing plates. It is.
　この構成によれば、連通孔の孔回りに均等に分割プレートを配置することができるので、分割プレートの位置移動による連通孔の全開状態と全閉状態との間の拡縮を適切に行うことができる。 According to this configuration, since the divided plates can be arranged evenly around the holes of the communication holes, it is possible to appropriately perform expansion / contraction between the fully open state and the fully closed state of the communication holes by moving the position of the divided plates. it can.
　請求項４記載の発明は、前記連通孔の拡縮は、該連通孔の開口面積が前記流出口の開口面積に対して０％から１００％までの範囲で変化するように行われるスライディングゲート装置である。 The invention according to claim 4 is a sliding gate device in which expansion / contraction of the communication hole is performed such that an opening area of the communication hole changes in a range of 0% to 100% with respect to an opening area of the outlet. is there.
　この構成によれば、連通孔の開口面積が溶鋼容器の流出口の開口面積に対して０％から１００％までの範囲で変化するので、溶鋼の流出量を適切に制御することができる。 According to this configuration, since the opening area of the communication hole changes in a range from 0% to 100% with respect to the opening area of the outlet of the molten steel container, the outflow amount of the molten steel can be appropriately controlled.
　請求項５記載の発明は、前記連通孔の拡縮は、該連通孔の中心を前記流出口の中心に一致させつつ相似形を保ったまま行われるスライディングゲート装置である。 The invention according to claim 5 is a sliding gate device in which expansion / contraction of the communication hole is performed while maintaining a similar shape while matching the center of the communication hole with the center of the outlet.
　この構成によれば、連通孔の拡縮がその中心を溶鋼容器の流出口の中心に一致させつつ相似形を保ったまま行われるので、溶鋼容器から流出される溶鋼が乱流するのを防止することができる。 According to this configuration, the expansion / contraction of the communication hole is performed while maintaining the similar shape while keeping the center of the communication hole at the center of the outlet of the molten steel container, thereby preventing turbulent flow of the molten steel flowing out of the molten steel container. be able to.
本発明の一実施形態に係るスライディングゲート装置を備えるシステムの注湯位置での断面図である。It is sectional drawing in the pouring position of a system provided with the sliding gate apparatus which concerns on one Embodiment of this invention. 本実施形態に係るスライディングゲート装置を備えるシステムの注湯停止位置での断面図である。It is sectional drawing in the pouring stop position of a system provided with the sliding gate apparatus which concerns on this embodiment. 本実施形態に係るスライディングゲート装置の上面図である。It is a top view of the sliding gate apparatus which concerns on this embodiment. 本実施形態に係るスライディングゲート装置を図３に示すIV－IVで切断した際の断面図である。FIG. 4 is a cross-sectional view when the sliding gate device according to the present embodiment is cut along IV-IV shown in FIG. 3. 本実施形態に係るスライディングゲート装置が備える分割プレートを位置移動させる移動装置の構成図である。It is a block diagram of the moving apparatus which moves the position of the division | segmentation plate with which the sliding gate apparatus which concerns on this embodiment is provided. 本実施形態に係るスライディングゲート装置が備える分割プレートの、連通孔の全開状態での上面図である。It is a top view in the fully open state of the communicating hole of the division plate with which the sliding gate device concerning this embodiment is provided. 本実施形態に係るスライディングゲート装置が備える分割プレートの、連通孔の半開状態での上面図である。It is a top view in the half open state of the communicating hole of the division plate with which the sliding gate device concerning this embodiment is provided. 本実施形態に係るスライディングゲート装置が備える分割プレートの、連通孔の全閉状態での上面図である。It is a top view in the fully closed state of the communicating hole of the division plate with which the sliding gate device concerning this embodiment is provided. 本発明の一変形例に係るスライディングゲート装置が備える分割プレートを位置移動させる移動装置の構成図である。It is a block diagram of the moving apparatus which moves the position of the division | segmentation plate with which the sliding gate apparatus which concerns on one modification of this invention is provided. 本発明の一変形例に係るスライディングゲート装置の上面図である。It is a top view of the sliding gate apparatus which concerns on one modification of this invention. 本発明の一変形例に係るスライディングゲート装置の上面図である。It is a top view of the sliding gate apparatus which concerns on one modification of this invention.
　以下、本発明のスライディングゲート装置の具体的な実施形態について、図面を参照しつつ説明する。 Hereinafter, specific embodiments of the sliding gate device of the present invention will be described with reference to the drawings.
　図１及び図２はそれぞれ、本発明の一実施形態に係るスライディングゲート装置１０を備えるシステムの構成図を示す。尚、図１には注湯位置での断面図を、図２には注湯停止位置での断面図を、それぞれ示す。図３は、本実施形態のスライディングゲート装置１０の上面図を示す。図４は、本実施形態のスライディングゲート装置１０を図３に示すIV－IVで切断した際の断面図を示す。また、図５は、本実施形態のスライディングゲート装置１０が備える分割プレートを位置移動させる移動装置の構成図を示す。 FIG. 1 and FIG. 2 each show a configuration diagram of a system including a sliding gate device 10 according to an embodiment of the present invention. 1 shows a cross-sectional view at the pouring position, and FIG. 2 shows a cross-sectional view at the pouring stop position. FIG. 3 shows a top view of the sliding gate device 10 of the present embodiment. FIG. 4 is a cross-sectional view of the sliding gate device 10 according to the present embodiment taken along IV-IV shown in FIG. FIG. 5 shows a configuration diagram of a moving device for moving the position of the divided plate provided in the sliding gate device 10 of the present embodiment.
　本実施形態に係るスライディングゲート装置１０は、取鍋やタンディッシュなどの溶鋼容器１２に取り付けられる装置である。溶鋼容器１２は、鋳造用の高温の溶融金属である溶鋼が収容される例えば鉄板製の容器である。溶鋼容器１２の容器内側には、耐火材が配置されている。 The sliding gate device 10 according to the present embodiment is a device that is attached to a molten steel container 12 such as a ladle or a tundish. The molten steel container 12 is a container made of, for example, an iron plate in which molten steel that is a high-temperature molten metal for casting is accommodated. A refractory material is disposed inside the molten steel container 12.
　溶鋼容器１２の底部には、収容された溶鋼を流出させるための出湯口１６が設けられている。出湯口１６には、インサートノズル１８が取り付け固定されている。インサートノズル１８は、出湯口１６に挿入されている注湯用ノズルである。以下、インサートノズル１８を上部ノズル１８と称す。上部ノズル１８は、高い耐火性を有する材料（例えば、アルミナやカーボンなどの配合や混練等を行うことで生成されたアルミナカーボンなど）により形成された、連続鋳造を可能とする部材である。 The bottom of the molten steel container 12 is provided with a hot water outlet 16 for allowing the stored molten steel to flow out. An insert nozzle 18 is attached and fixed to the hot water outlet 16. The insert nozzle 18 is a pouring nozzle inserted into the hot water outlet 16. Hereinafter, the insert nozzle 18 is referred to as the upper nozzle 18. The upper nozzle 18 is a member that enables continuous casting and is formed of a material having high fire resistance (for example, alumina carbon produced by blending or kneading alumina or carbon).
　スライディングゲート装置１０は、上部ノズル１８に対応して設けられている。スライディングゲート装置１０は、固定プレート２０と、第１スライドプレート２２と、第２スライドプレート２４と、を備えている。スライディングゲート装置１０は、第１スライドプレート２２及び第２スライドプレート２４が固定プレート２０に対してスライド移動されて後述の連通孔同士の連通を制御することにより上部ノズル１８からの溶鋼の流出を制御する機能を有する。 The sliding gate device 10 is provided corresponding to the upper nozzle 18. The sliding gate device 10 includes a fixed plate 20, a first slide plate 22, and a second slide plate 24. The sliding gate device 10 controls the outflow of the molten steel from the upper nozzle 18 by controlling the communication between communication holes described later as the first slide plate 22 and the second slide plate 24 are slid relative to the fixed plate 20. It has the function to do.
　固定プレート２０、第１スライドプレート２２、及び第２スライドプレート２４はそれぞれ、板状に形成されたレンガ部材である。固定プレート２０と第１スライドプレート２２と第２スライドプレート２４とは、上下の積層方向に重ねられて配置されている。第２スライドプレート２４は、固定プレート２０と第１スライドプレート２２との間に挟まれて配置されている。 The fixed plate 20, the first slide plate 22, and the second slide plate 24 are each a brick member formed in a plate shape. The fixed plate 20, the first slide plate 22, and the second slide plate 24 are arranged so as to overlap in the vertical stacking direction. The second slide plate 24 is disposed between the fixed plate 20 and the first slide plate 22.
　第２スライドプレート２４は、固定プレート２０側に面圧負荷されつつ、固定プレート２０に対して対向面に沿って摺動しながらスライド移動される。第１スライドプレート２２は、固定プレート２０側に面圧負荷されつつ、第２スライドプレート２４に対して対向面に沿って摺動しながらスライド移動される。尚、第１及び第２スライドプレート２４に負荷される面圧の大きさは、プレート２０，２２，２４間からの溶鋼漏れを防止しつつ固定プレート２０に対する第１及び第２スライドプレート２２，２４の相対移動を許容するものに設定されている。 The second slide plate 24 is slid and moved along the facing surface with respect to the fixed plate 20 while being subjected to a surface pressure load on the fixed plate 20 side. The first slide plate 22 is slid and moved along the facing surface with respect to the second slide plate 24 while being subjected to a surface pressure load on the fixed plate 20 side. In addition, the magnitude | size of the surface pressure loaded on the 1st and 2nd slide plate 24 is the 1st and 2nd slide plates 22 and 24 with respect to the fixed plate 20, preventing the molten steel leak from between the plates 20,22,24. Is set to allow relative movement.
　固定プレート２０は、マウンティングプレート２６を介して溶鋼容器１２に対して固定される上部プレートであって、マウンティングプレート２６ひいては溶鋼容器１２に対して着脱可能に取り付けられる。固定プレート２０は、溶鋼容器１２の出湯口１６に挿入された上部ノズル１８の流出口２８に連通する連通孔３０を有している。連通孔３０は、溶鋼が流通するノズル孔であって、溶鋼容器１２に収容された溶鋼を外部の鋳型などに注湯するために設けられている。 The fixing plate 20 is an upper plate that is fixed to the molten steel container 12 via the mounting plate 26, and is detachably attached to the mounting plate 26 and eventually the molten steel container 12. The fixed plate 20 has a communication hole 30 that communicates with the outlet 28 of the upper nozzle 18 inserted into the outlet 16 of the molten steel container 12. The communication hole 30 is a nozzle hole through which the molten steel flows, and is provided for pouring the molten steel accommodated in the molten steel container 12 into an external mold or the like.
　連通孔３０は、上部ノズル１８の流出口２８の内径とほぼ同じ内径を有している。溶鋼容器１２側への固定プレート２０の固定は、連通孔３０が上部ノズル１８の流出口２８に連通する位置関係が成立するように行われる。尚、固定プレート２０は、マウンティングプレート２６との接触面に緩衝材としてのクッション材やブリキ板が取り付けられたものであってよい。 The communication hole 30 has an inner diameter that is substantially the same as the inner diameter of the outlet 28 of the upper nozzle 18. The fixing plate 20 is fixed to the molten steel container 12 so that a positional relationship is established in which the communication hole 30 communicates with the outlet 28 of the upper nozzle 18. Note that the fixed plate 20 may have a cushioning material or a tin plate attached as a cushioning material on the contact surface with the mounting plate 26.
　第１スライドプレート２２は、固定プレート２０ひいては溶鋼容器１２に対してスライド移動可能な下部プレートである。第１スライドプレート２２のスライド移動は、スライド装置３２を用いて行われる。第１スライドプレート２２は、溶鋼容器１２及びスライド装置３２に対して着脱可能に取り付けられている。スライド装置３２は、第１スライドプレート２２を押圧し或いは引っ張ることにより溶鋼容器１２ひいては固定プレート２０に対して直線的にスライド移動（すなわち、直線移動）させる装置である。スライド装置３２は、第１スライドプレート２２のスライド移動を、油圧シリンダ或いはモータを用いて行うものである。スライド装置３２による第１スライドプレート２２のスライド移動は、対向面に沿って直線的に行われる。 The first slide plate 22 is a lower plate that is slidable with respect to the fixed plate 20 and consequently the molten steel container 12. The slide movement of the first slide plate 22 is performed using the slide device 32. The first slide plate 22 is detachably attached to the molten steel container 12 and the slide device 32. The slide device 32 is a device that linearly slides (that is, moves linearly) with respect to the molten steel container 12 and thus the fixed plate 20 by pressing or pulling the first slide plate 22. The slide device 32 performs the sliding movement of the first slide plate 22 using a hydraulic cylinder or a motor. The slide movement of the first slide plate 22 by the slide device 32 is performed linearly along the facing surface.
　第１スライドプレート２２は、固定プレート２０の連通孔３０に連通し得る連通孔３４を有している。連通孔３４は、溶鋼が流通するノズル孔であって、溶鋼容器１２に収容された溶鋼を外部の鋳型などに注湯するために設けられている。連通孔３４は、上部ノズル１８の流出口２８及び固定プレート２０の連通孔３０の内径とほぼ同じ内径を有している。 The first slide plate 22 has a communication hole 34 that can communicate with the communication hole 30 of the fixed plate 20. The communication hole 34 is a nozzle hole through which the molten steel flows, and is provided for pouring the molten steel accommodated in the molten steel container 12 into an external mold or the like. The communication hole 34 has an inner diameter substantially the same as the inner diameter of the outlet 28 of the upper nozzle 18 and the communication hole 30 of the fixed plate 20.
　スライド装置３２は、第１スライドプレート２２を、その連通孔３４を固定プレート２０の連通孔３０に連通させる位置（以下、注湯位置Ａと称す。）と、その連通孔３４を連通孔３０に連通させない位置（以下、注湯停止位置Ｂと称す。）と、にスライド移動させることが可能である。第１スライドプレート２２のスライド装置３２によるスライド移動は、固定プレート２０の連通孔３０と第１スライドプレート２２の連通孔３４との孔中心同士の距離が変化するように行われる。第１スライドプレート２２は、主に、注湯位置Ａと注湯停止位置Ｂとの２つの位置に選択的に移動される。 The slide device 32 includes a position where the first slide plate 22 communicates with the communication hole 30 of the fixed plate 20 (hereinafter referred to as a pouring position A), and the communication hole 34 as the communication hole 30. It can be slid to a position where it does not communicate (hereinafter referred to as a pouring stop position B). The sliding movement of the first slide plate 22 by the slide device 32 is performed such that the distance between the hole centers of the communication hole 30 of the fixed plate 20 and the communication hole 34 of the first slide plate 22 changes. The first slide plate 22 is selectively moved mainly to two positions, a pouring position A and a pouring stop position B.
　第１スライドプレート２２には、注湯用ノズル３６が取り付け固定されている。注湯用ノズル３６は、第１スライドプレート２２の、固定プレート２０とは反対側の面側に配置されている。以下、注湯用ノズル３６を下部ノズル３６と称す。下部ノズル３６は、高い耐火性を有する材料（例えば、アルミナやカーボンなどの配合や混練等を行うことで生成されたアルミナカーボンなど）により形成された、連続鋳造を可能とする部材である。 A pouring nozzle 36 is attached and fixed to the first slide plate 22. The pouring nozzle 36 is disposed on the surface of the first slide plate 22 opposite to the fixed plate 20. Hereinafter, the pouring nozzle 36 is referred to as a lower nozzle 36. The lower nozzle 36 is a member that is made of a material having high fire resistance (for example, alumina carbon produced by blending or kneading alumina or carbon) and the like, which enables continuous casting.
　下部ノズル３６は、溶鋼が流通する流出口３８を有している。流出口３８は、上部ノズル１８の流出口２８などの内径とほぼ同じ内径を有している。第１スライドプレート２２への下部ノズル３６の固定は、流出口３８が第１スライドプレート２２の連通孔３４に連通する位置関係が成立するように行われる。 The lower nozzle 36 has an outlet 38 through which molten steel flows. The outlet 38 has an inner diameter that is substantially the same as the inner diameter of the outlet 28 of the upper nozzle 18. The lower nozzle 36 is fixed to the first slide plate 22 so that a positional relationship in which the outlet 38 communicates with the communication hole 34 of the first slide plate 22 is established.
　第２スライドプレート２４は、固定プレート２０と第１スライドプレート２２との間に挟持されつつ固定プレート２０及び第１スライドプレート２２に対してスライド移動可能な中間プレートである。第２スライドプレート２４は、溶鋼容器１２の上部ノズル１８の流出口２８に固定プレート２０の連通孔３０を介して連通し得る連通孔４０を有している。連通孔４０は、溶鋼が流通するノズル孔であって、溶鋼容器１２に収容された溶鋼を外部の鋳型などに注湯するために設けられている。連通孔４０の孔中心Ｏ´は、固定プレート２０の連通孔３０の孔中心Ｏに一致する。 The second slide plate 24 is an intermediate plate that is slidable relative to the fixed plate 20 and the first slide plate 22 while being sandwiched between the fixed plate 20 and the first slide plate 22. The second slide plate 24 has a communication hole 40 that can communicate with the outlet 28 of the upper nozzle 18 of the molten steel container 12 through the communication hole 30 of the fixed plate 20. The communication hole 40 is a nozzle hole through which molten steel flows, and is provided for pouring molten steel accommodated in the molten steel container 12 into an external mold or the like. The hole center O ′ of the communication hole 40 coincides with the hole center O of the communication hole 30 of the fixed plate 20.
　第２スライドプレート２４は、連通孔４０の孔回りで複数に分割されたプレート片としての分割プレート４２からなる。分割プレート４２は、複数（具体的には、３つ以上であって、例えば６つである。）設けられている。複数の分割プレート４２は、プレート２０，２２，２４の積層方向に重なり合うことなく連通孔４０の孔回りに環状に配置される。複数の分割プレート４２は、その環状中心を孔中心Ｏ´とした上記の連通孔４０を形成する。 The second slide plate 24 includes a divided plate 42 as a plate piece divided into a plurality of portions around the communication hole 40. A plurality of division plates 42 (specifically, three or more, for example, six) are provided. The plurality of divided plates 42 are annularly arranged around the communication hole 40 without overlapping in the stacking direction of the plates 20, 22, 24. The plurality of divided plates 42 form the communication hole 40 having the annular center as the hole center O ′.
　分割プレート４２は、少なくとも２つの側壁４２ａ，４２ｂを有している。側壁４２ａは、連通孔４０に臨む側壁であって、連通孔４０を構成する一部となり得る。側壁４２ｂは、周方向に隣接して配置される分割プレート（以下、隣接分割プレートと称す。）４２の側壁４２ａに接する側壁であって、その隣接分割プレート４２の側壁４２ａに沿って摺動する。 The dividing plate 42 has at least two side walls 42a and 42b. The side wall 42 a is a side wall facing the communication hole 40, and can be a part of the communication hole 40. The side wall 42b is a side wall in contact with a side wall 42a of a divided plate (hereinafter referred to as an adjacent divided plate) 42 that is disposed adjacent to the circumferential direction, and slides along the side wall 42a of the adjacent divided plate 42. .
　分割プレート４２は、側壁４２ａと側壁４２ｂとで形成される角部が、第２スライドプレート２４が有する分割プレート４２の数に応じた角度をなすように形成されている。この角部の角度は、例えば、分割プレート４２が６枚設けられている場合は６０°であり、また、分割プレート４２が３枚設けられている場合は１２０°である。また、連通孔４０の断面形状は、分割プレート４２の上記角部の形状に応じたものであって、分割プレート４２の数に応じたものに設定されている。この連通孔４０の断面形状は、例えば、分割プレート４２が６枚設けられている場合は正六角形であり、また、分割プレート４２が３枚設けられている場合は正三角形である。 The split plate 42 is formed such that a corner formed by the side wall 42a and the side wall 42b forms an angle corresponding to the number of the split plates 42 included in the second slide plate 24. The angle of the corner is, for example, 60 ° when six dividing plates 42 are provided, and 120 ° when three dividing plates 42 are provided. Further, the cross-sectional shape of the communication hole 40 is set in accordance with the shape of the corner portion of the divided plate 42 and in accordance with the number of the divided plates 42. The cross-sectional shape of the communication hole 40 is, for example, a regular hexagon when six division plates 42 are provided, and a regular triangle when three division plates 42 are provided.
　第２スライドプレート２４のスライド移動は、スライド装置４４を用いて行われる。スライド装置４４は、分割プレート４２ごとに一対一で対応して設けられており、複数（具体的には、３つ以上であって、例えば６つである。）設けられている。以下、分割プレート４２は、６つ設けられているものとし、適宜、それぞれ分割プレート４２－１，４２－２，４２－３，４２－４，４２－５，４２－６とする。また、スライド装置４４は、分割プレート４２に対応して６台設けられているものとし、適宜、それぞれスライド装置４４－１，４４－２，４４－３，４４－４，４４－５，４４－６とする。 The slide movement of the second slide plate 24 is performed using the slide device 44. The slide device 44 is provided in one-to-one correspondence for each divided plate 42, and a plurality (specifically, three or more, for example, six) are provided. Hereinafter, it is assumed that six division plates 42 are provided, and the division plates 42-1, 42-2, 42-3, 42-4, 42-5, and 42-6 are appropriately provided. In addition, six slide devices 44 are provided corresponding to the divided plates 42, and the slide devices 44-1, 44-2, 44-3, 44-4, 44-5, 44- are respectively provided as appropriate. 6.
　各分割プレート４２は、溶鋼容器１２及び対応のスライド装置４４に対して着脱可能に取り付けられている。各スライド装置４４は、対応の分割プレート４２を押圧し或いは引っ張ることにより溶鋼容器１２、固定プレート２０、及び第１スライドプレート２２に対して直線的にスライド移動させる装置である。各スライド装置４４が対応の分割プレート４２をスライド移動させる押圧方向と、その分割プレート４２の連通孔４０に臨む側壁４２ａの法線方向と、は所定角度（例えば、３０°）だけずれている。また、各スライド装置４４が対応の分割プレート４２をスライド移動させる引張方向（すなわち、上記の押圧方向とは１８０°異なる方向）と、その分割プレート４２の隣接分割プレート４２の側壁４２ａに接する側壁４２ｂの法線方向と、は所定角度（例えば、３０°）だけずれている。 Each divided plate 42 is detachably attached to the molten steel container 12 and the corresponding slide device 44. Each slide device 44 is a device that linearly slides the molten steel container 12, the fixed plate 20, and the first slide plate 22 by pressing or pulling the corresponding divided plate 42. The pressing direction in which each slide device 44 slides the corresponding divided plate 42 and the normal direction of the side wall 42a facing the communication hole 40 of the divided plate 42 are shifted by a predetermined angle (for example, 30 °). In addition, each slide device 44 slides the corresponding divided plate 42 in a pulling direction (that is, a direction different from the pressing direction by 180 °), and a side wall 42b in contact with the side wall 42a of the adjacent divided plate 42 of the divided plate 42. Is deviated from the normal direction by a predetermined angle (for example, 30 °).
　各分割プレート４２は、側壁４２ａと側壁４２ｂとを有する翼片である。各スライド装置４４は、対応の分割プレート４２を、その連通孔４０に臨む側壁４２ａが隣接分割プレート４２の側壁４２ｂに接した状態でその側壁４２ｂに沿って摺動するように直線的にスライド移動させる。かかるスライド移動の過程では、互いに周方向に隣接する分割プレート４２同士が接触した状態が維持されつつ、一方の分割プレート４２の側壁４２ａが他方の分割プレート４２の側壁４２ｂに沿って摺動して、それらの両側壁４２ａ，４２ｂが互いに接する接触位置関係が変化する。 Each divided plate 42 is a blade piece having a side wall 42a and a side wall 42b. Each slide device 44 linearly slides the corresponding divided plate 42 so that the side wall 42a facing the communication hole 40 slides along the side wall 42b with the side wall 42b of the adjacent divided plate 42 in contact therewith. Let In the process of sliding, the side plates 42a of one divided plate 42 slide along the side walls 42b of the other divided plate 42 while maintaining the state in which the divided plates 42 adjacent to each other in the circumferential direction are in contact with each other. The positional relationship of contact between the side walls 42a and 42b changes.
　各スライド装置４４が対応の分割プレート４２を直線的にスライド移動させる方向は、互いに異なる。スライド装置４４は、対応の分割プレート４２を直線的にスライド移動させる方向（すなわち、スライド方向）が他のスライド装置４４によるものとは異なるように配置されている。具体的には、図５に示す如く、スライド装置４４は、スライド方向が所定角度（例えば分割プレート４２が６枚設けられている場合は６０°）ずつずれるように配置されている。 The directions in which each slide device 44 linearly slides the corresponding divided plate 42 are different from each other. The slide device 44 is arranged so that the direction in which the corresponding divided plate 42 is slid linearly (that is, the slide direction) is different from that of the other slide devices 44. Specifically, as shown in FIG. 5, the slide device 44 is arranged such that the slide direction is shifted by a predetermined angle (for example, 60 ° when six division plates 42 are provided).
　すべてのスライド装置４４－１，４４－２，４４－３，４４－４，４４－５，４４－６は、互いに連動して対応の分割プレート４２－１，４２－２，４２－３，４２－４，４２－５，４２－６を直線的にスライド移動させる。このため、すべての分割プレート４２は、互いに同じタイミングでかつ周方向に隣接する隣接分割プレート４２との関係で互いに同じ位置へスライド移動される。 All the sliding devices 44-1, 44-2, 44-3, 44-4, 44-5, and 44-6 are linked with each other so as to correspond to the corresponding divided plates 42-1, 42-2, 42-3, 42. Slide -4, 42-5 and 42-6 linearly. Therefore, all the divided plates 42 are slid and moved to the same position in relation to the adjacent divided plates 42 that are adjacent to each other at the same timing and in the circumferential direction.
　第２スライドプレート２４の連通孔４０は、各分割プレート４２のスライド装置４４によるスライド移動に伴って、固定プレート２０の連通孔３０に対して偏心することなく（すなわち、孔中心Ｏ，Ｏ´同士がずれることなく）すなわち溶鋼容器１２の流出口２８の中心に一致しつつ相似形を保ったまま拡縮する。連通孔４０の拡縮は、分割プレート４２が互いにプレート２０，２２，２４の積層方向に重なり合うことなく行われる。連通孔４０に内接する円及び外接する円の径は、分割プレート４２のスライド移動に伴って変化する。また、連通孔４０の拡縮は、連通孔４０の開口面積が固定プレート２０の連通孔３０又は溶鋼容器１２の上部ノズル１８の流出口２８の開口面積に対して０％から１００％までの範囲で変化するように行われる。 The communication holes 40 of the second slide plate 24 are not decentered with respect to the communication holes 30 of the fixed plate 20 (ie, the hole centers O, O ′ (That is, they are not displaced), that is, they expand and contract while maintaining the similar shape while being coincident with the center of the outlet 28 of the molten steel container 12. The expansion / contraction of the communication hole 40 is performed without the divided plates 42 overlapping each other in the stacking direction of the plates 20, 22, 24. The diameters of the circle inscribed and circumscribed in the communication hole 40 change as the divided plate 42 slides. The expansion / contraction of the communication hole 40 is such that the opening area of the communication hole 40 ranges from 0% to 100% with respect to the opening area of the communication hole 30 of the fixed plate 20 or the outlet 28 of the upper nozzle 18 of the molten steel container 12. Done to change.
　次に、図６、図７、及び図８を参照して、本実施形態のスライディングゲート装置１０の動作について説明する。 Next, the operation of the sliding gate device 10 of the present embodiment will be described with reference to FIGS.
　図６は、本実施形態のスライディングゲート装置１０が備える分割プレート４２の、連通孔４０の全開状態での上面図を示す。図７は、本実施形態のスライディングゲート装置１０が備える分割プレート４２の、連通孔４０の半開状態での上面図を示す。また、図８は、本実施形態のスライディングゲート装置１０が備える分割プレート４２の、連通孔４０の全閉状態での上面図を示す。 FIG. 6 shows a top view of the dividing plate 42 provided in the sliding gate device 10 of the present embodiment in a fully opened state of the communication hole 40. FIG. 7 shows a top view of the dividing plate 42 provided in the sliding gate device 10 of the present embodiment in a half-open state of the communication hole 40. FIG. 8 is a top view of the dividing plate 42 provided in the sliding gate device 10 of the present embodiment when the communication hole 40 is fully closed.
　鋳造などのために溶鋼容器１２から単位時間当たり所定量以上の溶鋼の流出が要求されると、スライド装置３２が第１スライドプレート２２を注湯位置Ａにスライド移動させると共に、スライド装置４４が第２スライドプレート２４の分割プレート４２を、連通孔４０が図６に示す如く全開状態Ｃとなるようにスライド移動させる。注湯位置Ａでは、第１スライドプレート２２の連通孔３４が、溶鋼容器１２の出湯口１６に挿入された上部ノズル１８の流出口２８及び固定プレート２０の連通孔３０に連通される。また、全開状態Ｃでは、第２スライドプレート２４の連通孔４０が、上部ノズル１８の流出口２８及び固定プレート２０の連通孔３０に全開（すなわち、開度１００％）で連通される。 When a flow of a predetermined amount or more of molten steel per unit time is requested from the molten steel container 12 for casting or the like, the slide device 32 slides the first slide plate 22 to the pouring position A, and the slide device 44 2 The slide plate 42 of the slide plate 24 is slid and moved so that the communication hole 40 is in the fully open state C as shown in FIG. In the pouring position A, the communication hole 34 of the first slide plate 22 communicates with the outlet 28 of the upper nozzle 18 inserted into the hot water outlet 16 of the molten steel container 12 and the communication hole 30 of the fixed plate 20. In the fully open state C, the communication hole 40 of the second slide plate 24 communicates with the outlet 28 of the upper nozzle 18 and the communication hole 30 of the fixed plate 20 in a fully open state (that is, an opening degree of 100%).
　かかる状態において、溶鋼容器１２に収容された溶鋼は、上部ノズル１８の流出口２８から固定プレート２０の連通孔３０、第２スライドプレート２４の全開状態での連通孔４０、及び第１スライドプレート２２の連通孔３４を介して下部ノズル３６の流出口３８に向けて流出されて鋳型などに注湯される。従って、スライド装置３２，４４により第１及び第２スライドプレート２２，２４の連通孔３４，４０を固定プレート２０の連通孔３０ひいては上部ノズル１８の流出口２８に連通させることで、溶鋼容器１２内の溶鋼を単位時間当たり所定量以上流出させて鋳造を実現することができる。 In such a state, the molten steel accommodated in the molten steel container 12 flows from the outlet 28 of the upper nozzle 18 to the communication hole 30 of the fixed plate 20, the communication hole 40 in the fully opened state of the second slide plate 24, and the first slide plate 22. Then, it flows out toward the outlet 38 of the lower nozzle 36 through the communication hole 34 and is poured into a mold or the like. Accordingly, the communicating holes 34 and 40 of the first and second slide plates 22 and 24 are communicated with the communicating hole 30 of the fixed plate 20 and the outlet 28 of the upper nozzle 18 by the slide devices 32 and 44, so that the inside of the molten steel container 12. It is possible to realize casting by flowing out a molten steel of a predetermined amount or more per unit time.
　また、上記した鋳造の停止が要求されると、スライド装置３２が第１スライドプレート２２を注湯位置Ａから注湯停止位置Ｂへスライド移動させ、又は、スライド装置４４が第２スライドプレート２４の分割プレート４２を連通孔４０が図８に示す如く全閉状態Ｅとなるようにスライド移動させる。注湯停止位置Ｂでは、第１スライドプレート２２の連通孔３４が固定プレート２０の連通孔３０に連通されず、上部ノズル１８の流出口２８が閉じられる。また、全閉状態Ｅでは、第２スライドプレート２４の連通孔４０が開度０％になって固定プレート２０の連通孔３０に連通されず、上部ノズル１８の流出口２８が閉じられる。従って、かかる状態では、溶鋼容器１２に収容された溶鋼の流出は停止されて上記の鋳造は停止される。 When the above-described casting stop is requested, the slide device 32 slides the first slide plate 22 from the pouring position A to the pouring stop position B, or the slide device 44 moves the second slide plate 24. The dividing plate 42 is slid so that the communication hole 40 is in the fully closed state E as shown in FIG. At the pouring stop position B, the communication hole 34 of the first slide plate 22 is not communicated with the communication hole 30 of the fixed plate 20, and the outlet 28 of the upper nozzle 18 is closed. In the fully closed state E, the communication hole 40 of the second slide plate 24 has an opening degree of 0% and is not communicated with the communication hole 30 of the fixed plate 20, and the outlet 28 of the upper nozzle 18 is closed. Therefore, in such a state, the outflow of the molten steel accommodated in the molten steel container 12 is stopped, and the above casting is stopped.
　尚、第２スライドプレート２４の連通孔４０の開度が０％となるときは、その連通孔４０の隙間から第１スライドプレート２２の連通孔３４を通って溶鋼が漏れるのを防ぐため、第１スライドプレート２２が注湯停止位置Ｂへスライド移動されていることが好ましい。 When the opening degree of the communication hole 40 of the second slide plate 24 becomes 0%, in order to prevent the molten steel from leaking through the communication hole 34 of the first slide plate 22 from the clearance of the communication hole 40, One slide plate 22 is preferably slid to the pouring stop position B.
　更に、溶鋼容器１２からの溶鋼の流出中、その流出量を単位時間当たり所定量未満とすべき要求があると、スライド装置３２が第１スライドプレート２２を注湯位置Ａにスライド移動させた状態が維持されたまま、スライド装置４４が第２スライドプレート２４の分割プレート４２を、連通孔４０が図７に示す如く半開状態Ｄとなるようにスライド移動させる。 Furthermore, during the outflow of the molten steel from the molten steel container 12, when there is a request for the outflow amount to be less than a predetermined amount per unit time, the slide device 32 slides the first slide plate 22 to the pouring position A. The slide device 44 slides the dividing plate 42 of the second slide plate 24 so that the communication hole 40 is in the half-open state D as shown in FIG.
　連通孔４０の半開状態Ｄは、溶鋼の要求流出量に合わせて増減する開口面積が実現されるものである。半開状態Ｄでは、第２スライドプレート２４の連通孔４０の、上部ノズル１８の流出口２８及び固定プレート２０の連通孔３０への連通が確保されるが、全開状態Ｃに比べて、溶鋼容器１２からの溶鋼の流出量が少なくなる。従って、かかる連通が行われることで、溶鋼容器１２から流出させる溶鋼の流出量を制御した鋳造を実現することができる。 The half-open state D of the communication hole 40 realizes an opening area that increases or decreases in accordance with the required outflow amount of molten steel. In the half-open state D, the communication hole 40 of the second slide plate 24 is ensured to communicate with the outlet 28 of the upper nozzle 18 and the communication hole 30 of the fixed plate 20. The amount of outflow of molten steel from is reduced. Therefore, the casting which controlled the outflow amount of the molten steel which flows out from the molten steel container 12 by performing this communication is realizable.
　このように本実施形態のスライディングゲート装置１０においては、溶鋼容器１２から流出させる溶鋼の流出量を制御するうえで、第２スライドプレート２４の連通孔４０が、その孔中心Ｏ´を固定プレート２０の連通孔３０の孔中心Ｏひいては溶鋼容器１２の流出口２８の中心に一致させつつ相似形を保ったまま拡縮される。連通孔４０が拡縮されると、その連通孔４０に内接する内接円及び外接する外接円の径が変化する。この連通孔４０の拡縮は、第２スライドプレート２４のすべての分割プレート４２をスライド装置４４を用いて互いに連動してスライド移動させることにより実現され、その内接円及び外接円の径は、分割プレート４２のスライド移動に伴ってリニアに変化する。 As described above, in the sliding gate device 10 of the present embodiment, in order to control the amount of molten steel flowing out from the molten steel container 12, the communication hole 40 of the second slide plate 24 has its hole center O ′ fixed to the fixed plate 20. The hole center O of the communication hole 30 and the center of the outflow port 28 of the molten steel container 12 are expanded and contracted while maintaining a similar shape. When the communication hole 40 is enlarged / reduced, the diameters of the inscribed circle inscribed in the communicating hole 40 and the circumscribed circle in the circumscribed direction change. The expansion / contraction of the communication hole 40 is realized by sliding all the divided plates 42 of the second slide plate 24 in conjunction with each other using the slide device 44. The diameters of the inscribed circle and the circumscribed circle are divided. It changes linearly as the plate 42 slides.
　かかる構成によれば、連通孔４０の拡縮が、連通孔４０の孔中心Ｏ´を固定プレート２０の連通孔３０の孔中心Ｏひいては溶鋼容器１２の流出口２８の中心に一致させつつ相似形を保ったまま行われる。このため、分割プレート４２をスライド装置４４を用いてスライド移動させることにより、固定プレート２０の連通孔３０に連通させる第２スライドプレート２４の連通孔４０をスムースに拡縮することができる。また、この連通孔４０の拡縮が分割プレート４２が互いに積層方向に重なり合うことなく行われる。このため、その連通孔４０の拡縮過程で溶鋼漏れが生じるのを防止することができる。 According to such a configuration, the expansion and contraction of the communication hole 40 has a similar shape while the hole center O ′ of the communication hole 40 is made to coincide with the hole center O of the communication hole 30 of the fixed plate 20 and the center of the outlet 28 of the molten steel container 12. It is done while keeping. For this reason, the communicating hole 40 of the 2nd slide plate 24 connected to the communicating hole 30 of the fixed plate 20 can be smoothly expanded / contracted by slidingly moving the dividing plate 42 using the slide device 44. Further, the expansion / contraction of the communication hole 40 is performed without the division plates 42 overlapping each other in the stacking direction. For this reason, it is possible to prevent molten steel from leaking during the expansion / contraction process of the communication hole 40.
　また、溶鋼容器１２から流出させる溶鋼の流出量を、固定プレート２０の連通孔３０すなわち流出口２８に対する第２スライドプレート２４の連通孔４０の拡縮に従った開閉度合いに応じたものとすることができるので、その溶鋼の流出量を適切に制御することができる。また、第２スライドプレート２４の連通孔４０の開閉度合いが変化する過程で、その連通孔４０の形状が円形に近い角形状で相似形に保たれつつ、第２スライドプレート２４の連通孔４０と固定プレート２０の連通孔３０とが重複する開口形状がいびつなものになることなく一定に維持される。このため、例えばその開口形状が円形から三日月形や半月形などに形状変化する構成と異なり、溶鋼容器１２から流出した溶鋼が第２スライドプレート２４の連通孔４０を通過する際或いは通過した後にその溶鋼が乱流して流出するのを防止することができる。 Further, the amount of molten steel flowing out of the molten steel container 12 may be determined according to the degree of opening / closing according to the expansion / contraction of the communication hole 40 of the second slide plate 24 with respect to the communication hole 30 of the fixed plate 20, that is, the outlet 28. Therefore, the outflow amount of the molten steel can be appropriately controlled. Further, in the process in which the degree of opening and closing of the communication hole 40 of the second slide plate 24 changes, the shape of the communication hole 40 is kept similar to a square shape that is close to a circle, and the communication hole 40 of the second slide plate 24 The opening shape overlapping with the communication hole 30 of the fixed plate 20 is kept constant without becoming distorted. For this reason, for example, unlike the configuration in which the opening shape changes from a circular shape to a crescent shape or a half-moon shape, the molten steel flowing out from the molten steel container 12 passes through or through the communication hole 40 of the second slide plate 24. It is possible to prevent the molten steel from flowing out due to turbulence.
　従って、本実施形態のスライディングゲート装置１０によれば、固定プレート２０の連通孔３０に連通させる第２スライドプレート２４の連通孔４０をスムースに拡縮すると共に、溶鋼容器１２から流出させる溶鋼を乱流させることなく、その溶鋼の流出量を適切に制御することができる。 Therefore, according to the sliding gate device 10 of the present embodiment, the communication hole 40 of the second slide plate 24 communicated with the communication hole 30 of the fixed plate 20 is smoothly expanded and contracted, and the molten steel flowing out from the molten steel container 12 is turbulently flowed. Therefore, the outflow amount of the molten steel can be appropriately controlled.
　また、本実施形態において、第２スライドプレート２４は、連通孔４０の孔回りで複数に分割された分割プレート４２からなり、その分割プレート４２は、連通孔４０に臨む側壁４２ａと隣接分割プレート４２の側壁４２ａに接する側壁４２ｂとで形成される角部が第２スライドプレート２４が有する分割プレート４２の数に応じた角度をなすように形成されている。このため、連通孔４０の孔回りに均等に分割プレート４２を配置することができるので、分割プレート４２の位置移動による連通孔４０の全開状態と全閉状態との間の拡縮を適切に行うことができる。 In the present embodiment, the second slide plate 24 includes a divided plate 42 divided into a plurality of portions around the hole of the communication hole 40, and the divided plate 42 includes a side wall 42 a facing the communication hole 40 and an adjacent divided plate 42. The corner formed by the side wall 42b in contact with the side wall 42a is formed so as to form an angle corresponding to the number of the divided plates 42 included in the second slide plate 24. For this reason, since the division | segmentation plate 42 can be equally arrange | positioned around the hole of the communication hole 40, the expansion / contraction between the fully open state of the communication hole 40 by the position movement of the division | segmentation plate 42 and a fully closed state is performed appropriately. Can do.
　ところで、上記の実施形態においては、連通孔４０が特許請求の範囲に記載した「連通孔」に、スライド装置４４が特許請求の範囲に記載した「移動装置」に、側壁４２ａが特許請求の範囲に記載した「第１側壁」に、側壁４２ｂが特許請求の範囲に記載した「第２側壁」に、それぞれ相当している。 By the way, in the above embodiment, the communication hole 40 is in the “communication hole” described in the claims, the slide device 44 is in the “moving device” in the claims, and the side wall 42a is in the claims. The side wall 42b corresponds to the “second side wall” described in the claims.
　尚、本発明は、上述した実施形態や変形例に限定されるものではなく、本発明の趣旨を逸脱しない範囲で種々の変更を施すことが可能である。 Note that the present invention is not limited to the above-described embodiments and modifications, and various modifications can be made without departing from the spirit of the present invention.
　例えば、上記の実施形態においては、第２スライドプレート２４の分割プレート４２を位置移動させるのに、分割プレート４２ごとに一対一で対応して複数のスライド装置４４を設けることとしている。しかし、本発明はこれに限定されるものではなく、図９に示す如く、すべての分割プレート４２のうち一部（例えば一つ）の分割プレート４２のみに対応してスライド装置１００を設け、そのスライド装置１００により一部の分割プレート４２のみを押圧し或いは引っ張ることによりスライド移動させるものであってよく、その一部の分割プレート４２のスライド移動に伴って連動して他のすべての分割プレート４２を所望の方向にスライド移動させるものであってよい。 For example, in the above-described embodiment, in order to move the position of the divided plate 42 of the second slide plate 24, a plurality of slide devices 44 are provided corresponding to each divided plate 42 on a one-to-one basis. However, the present invention is not limited to this, and as shown in FIG. 9, the slide device 100 is provided corresponding to only a part of the divided plates 42 (for example, one) among the divided plates 42. The slide device 100 may be slid and moved by pressing or pulling only some of the divided plates 42, and all the other divided plates 42 are interlocked with the sliding movement of the partial plates 42. May be slid in a desired direction.
　但し、この変形例においては、スライド装置１００による対応の分割プレート４２のスライド移動に伴って各分割プレート４２がスライド移動される押圧方向と、その分割プレート４２の側壁４２ａの法線方向と、が互いに一致せず、所定角度だけずれていること、及び、スライド装置１００による対応の分割プレート４２のスライド移動に伴って各分割プレート４２がスライド移動される引張方向と、その分割プレート４２の側壁４２ｂの法線方向と、が互いに一致せず、所定角度だけずれていることが望ましい。 However, in this modified example, the pressing direction in which each divided plate 42 is slid in accordance with the sliding movement of the corresponding divided plate 42 by the slide device 100 and the normal direction of the side wall 42a of the divided plate 42 are as follows. They are not coincident with each other, are shifted by a predetermined angle, and the pulling direction in which each divided plate 42 is slid in accordance with the sliding movement of the corresponding divided plate 42 by the slide device 100, and the side wall 42b of the divided plate 42 It is desirable that the normal directions of these are not coincident with each other and are shifted by a predetermined angle.
　かかる変形例においては、一のスライド装置１００が対応の分割プレート４２を押圧してスライド移動させると、その対応の分割プレート４２のスライド移動に伴って他のすべての分割プレート４２の側壁４２ａが隣接分割プレート４２の側壁４２ｂに沿って摺動しつつ他のすべての分割プレート４２が連動して押圧されてスライド移動される。これにより、連通孔４０が閉じる方向に縮小される。また、一のスライド装置１００が対応の分割プレート４２を引っ張ってスライド移動させると、その対応の分割プレート４２のスライド移動に伴って他のすべての分割プレート４２の側壁４２ｂが隣接分割プレート４２の側壁４２ａに沿って摺動しつつ他のすべての分割プレート４２が連動して押圧方向とは反対方向にスライド移動される。これにより、連通孔４０が開く方向に拡大される。すべての分割プレート４２は、スライド装置１００によるスライド移動の過程で互いに異なる方向に直線的に移動される。従って、この変形例においても、上記の実施形態と同様の効果を得ることが可能であると共に、連通孔４０の拡縮を一の分割プレート４２をスライド装置１００によりスライド移動させることにより簡素な構成で実現することができる。 In such a modification, when one slide device 100 presses and slides the corresponding divided plate 42, the side walls 42a of all the other divided plates 42 are adjacent to each other as the corresponding divided plate 42 slides. While sliding along the side wall 42b of the divided plate 42, all the other divided plates 42 are pressed and slid in conjunction with each other. Thereby, the communication hole 40 is reduced in the closing direction. Further, when one slide device 100 pulls and slides the corresponding divided plate 42, the side walls 42 b of all the other divided plates 42 move to the side walls of the adjacent divided plate 42 as the corresponding divided plate 42 slides. All the other divided plates 42 are slid along the direction opposite to the pressing direction while sliding along 42a. Thereby, it expands in the direction which the communicating hole 40 opens. All the divided plates 42 are linearly moved in different directions in the course of the slide movement by the slide device 100. Therefore, also in this modified example, it is possible to obtain the same effect as that of the above-described embodiment, and the communication hole 40 can be expanded and contracted by sliding the single divided plate 42 with the slide device 100. Can be realized.
　尚、この変形例においては、スライド装置１００による対応の分割プレート４２の押圧が停止された後或いはスライド装置１００が対応の分割プレート４２を引っ張ってスライド移動させるときに、すべての分割プレート４２を押圧方向とは反対の方向に確実にスライド移動させるうえでは、その反対方向に分割プレート４２を付勢するバネなどの付勢装置１０２を設けることが望ましい。この付勢装置１０２は、スライド装置１００が設けられた分割プレート４２を含むすべての分割プレート４２に対応して一対一で設けられてもよいし、スライド装置１００が設けられた分割プレート４２を除いた分割プレート４２に対応して一対一で設けられてもよいし、或いは、複数の分割プレート４２単位で一つ設けられてもよい。 In this modification, after the pressing of the corresponding dividing plate 42 by the slide device 100 is stopped or when the sliding device 100 pulls the corresponding dividing plate 42 to slide it, all the dividing plates 42 are pressed. In order to ensure sliding movement in a direction opposite to the direction, it is desirable to provide a biasing device 102 such as a spring that biases the dividing plate 42 in the opposite direction. The urging device 102 may be provided on a one-to-one basis corresponding to all the divided plates 42 including the divided plate 42 provided with the slide device 100, or excludes the divided plate 42 provided with the slide device 100. The divided plates 42 may be provided in one-to-one correspondence, or may be provided in units of a plurality of divided plates 42.
　かかる付勢装置１０２が設けられた変形例の構成では、上記の実施形態と同様の効果を得ることが可能であると共に、連通孔４０の拡縮を一の分割プレート４２をスライド移動させるスライド装置１００を用いて行いつつ、連通孔４０を拡大する際に分割プレート４２を付勢装置１０２によってスライド装置１００による押圧方向とは反対の方向に確実にスライド移動させることができるので、その連通孔４０の拡大を付勢装置１０２を用いて速やかに行うことができる。 In the configuration of the modified example in which the urging device 102 is provided, it is possible to obtain the same effect as in the above-described embodiment, and the slide device 100 that slides and moves the one divided plate 42 to expand and contract the communication hole 40. When the communication hole 40 is enlarged, the dividing plate 42 can be reliably slid in the direction opposite to the pressing direction by the slide device 100 when the communication hole 40 is enlarged. Enlarging can be performed quickly using the biasing device 102.
　また、上記の実施形態においては、第２スライドプレート２４が有する分割プレート４２が６つ設けられているものとし、各分割プレート４２が、連通孔４０に臨む側壁４２ａと、周方向に隣接して配置される分割プレート４２に接する側壁４２ｂと、で形成される角部が６０°の角度をなすように形成されており、連通孔４０が断面正六角形に形成されているものとしている。 In the above-described embodiment, six divided plates 42 included in the second slide plate 24 are provided, and each divided plate 42 is adjacent to the side wall 42a facing the communication hole 40 in the circumferential direction. The corner formed by the side wall 42b in contact with the divided plate 42 to be arranged is formed at an angle of 60 °, and the communication hole 40 is formed in a regular hexagonal cross section.
　しかし、本発明はこれに限定されるものではなく、第２スライドプレート２４が有する分割プレート４２が３つ以上設けられているものであればよい。例えば、図１０に示す如く、第２スライドプレート２４が有する分割プレート４２が３つ設けられているものとし、各分割プレート４２が、側壁４２ａと側壁４２ｂとで形成される角部が１２０°の角度をなすように形成されており、連通孔４０が断面正三角形に形成されているものに適用することとしてもよい。また、図１１に示す如く、第２スライドプレート２４が有する分割プレート４２が４つ設けられているものとし、各分割プレート４２が、側壁４２ａと側壁４２ｂとで形成される角部が９０°の角度をなすように形成されており、連通孔４０が断面正方形に形成されているものに適用することとしてもよい。 However, the present invention is not limited to this, as long as three or more divided plates 42 included in the second slide plate 24 are provided. For example, as shown in FIG. 10, it is assumed that three divided plates 42 included in the second slide plate 24 are provided, and each divided plate 42 has a 120 ° corner formed by the side wall 42a and the side wall 42b. It is good also as applying to what is formed so that an angle may be made and the communicating hole 40 is formed in the cross-section equilateral triangle. Further, as shown in FIG. 11, it is assumed that four divided plates 42 of the second slide plate 24 are provided, and each divided plate 42 has a 90 ° corner formed by the side wall 42a and the side wall 42b. It is good also as applying to what is formed so that an angle may be made and the communicating hole 40 may be formed in the square cross section.
　また、上記の実施形態においては、連通孔４０の拡縮を、分割プレート４２を直線的にスライド移動させるスライド装置４４を用いて実現することとしている。しかし、本発明はこれに限定されるものではなく、連通孔４０の拡縮を、各分割プレート４２それぞれを所定の軸回りに回転（或いは揺動）させる機構を用いて実現することとしてもよい。かかる変形例においても、上記の実施形態と同様の効果を得ることが可能である。 In the above-described embodiment, the communication hole 40 is expanded and contracted by using the slide device 44 that slides the dividing plate 42 linearly. However, the present invention is not limited to this, and the expansion / contraction of the communication hole 40 may be realized using a mechanism that rotates (or swings) each of the divided plates 42 around a predetermined axis. Also in this modification, it is possible to obtain the same effect as the above embodiment.
　１０　スライディングゲート装置
　１２　溶鋼容器
　１８　上部ノズル
　２０　固定プレート
　２２　第１スライドプレート
　２４　第２スライドプレート
　２６　マウンティングプレート
　２８，３８　流出口
　３０，３４，４０　連通孔
　３２，４４　スライド装置
　３６　下部ノズル
　４２　分割プレート
　４２ａ，４２ｂ　側壁 DESCRIPTION OF SYMBOLS 10 Sliding gate apparatus 12 Molten steel container 18 Upper nozzle 20 Fixed plate 22 1st slide plate 24 2nd slide plate 26 Mounting plate 28,38 Outflow port 30,34,40 Communication hole 32,44 Slide apparatus 36 Lower nozzle 42 Dividing plate 42a 42b Side wall

Claims (5)

  1. 　溶鋼容器の流出口に連通する連通孔を形成する、該連通孔の孔回りに分割して配置された３つ以上の分割プレートと、
    　前記分割プレートを、前記連通孔が相似形を保ったまま拡縮する方向に位置移動させる移動装置と、
    　を備えることを特徴とするスライディングゲート装置。     Three or more divided plates arranged around the hole of the communication hole to form a communication hole communicating with the outlet of the molten steel container;
    A moving device for moving the divided plate in a direction in which the communication hole expands and contracts while maintaining a similar shape;
    A sliding gate device comprising:
  2. 　前記分割プレートは、前記連通孔に臨む第１側壁と、周方向に隣接して配置される前記分割プレートの前記第１側壁に接する第２側壁と、を有すると共に、前記移動装置により、前記第１側壁が周方向に隣接して配置される前記分割プレートの前記第２側壁に沿って摺動して、該周方向に隣接して配置される前記分割プレートとの接触位置関係が変化するように位置移動されることを特徴とする請求項１記載のスライディングゲート装置。 The dividing plate has a first side wall facing the communication hole and a second side wall in contact with the first side wall of the dividing plate arranged adjacent to the circumferential direction, and the moving device causes the first side wall to be in contact with the first side wall. One side wall slides along the second side wall of the divided plate arranged adjacent to the circumferential direction so that the contact positional relationship with the divided plate arranged adjacent to the circumferential direction changes. The sliding gate device according to claim 1, wherein the sliding gate device is moved to a position.
  3. 　前記分割プレートは、前記第１側壁と前記第２側壁とで形成される角部が前記分割プレートの数に応じた角度をなすように形成されていることを特徴とする請求項２記載のスライディングゲート装置。 3. The sliding according to claim 2, wherein the divided plate is formed such that corners formed by the first side wall and the second side wall form an angle corresponding to the number of the divided plates. Gate device.
  4. 　前記連通孔の拡縮は、該連通孔の開口面積が前記流出口の開口面積に対して０％から１００％までの範囲で変化するように行われることを特徴とする請求項１乃至３の何れか一項記載のスライディングゲート装置。 The expansion / contraction of the communication hole is performed so that the opening area of the communication hole changes in a range of 0% to 100% with respect to the opening area of the outlet. A sliding gate device according to claim 1.
  5. 　前記連通孔の拡縮は、該連通孔の中心を前記流出口の中心に一致させつつ相似形を保ったまま行われることを特徴とする請求項１乃至４の何れか一項記載のスライディングゲート装置。 5. The sliding gate device according to claim 1, wherein the expansion / contraction of the communication hole is performed while maintaining a similar shape while matching a center of the communication hole with a center of the outlet. .
PCT/JP2018/000171 2017-03-10 2018-01-09 Sliding gate device WO2018163589A1 (en)

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JP2017046677A JP2018149561A (en) 2017-03-10 2017-03-10 Sliding gate device

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02142652A (en) * 1988-11-24 1990-05-31 Sumitomo Metal Ind Ltd Continuous casting method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02142652A (en) * 1988-11-24 1990-05-31 Sumitomo Metal Ind Ltd Continuous casting method

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