WO2018152738A1 - 薄板连续铸造装置 - Google Patents

薄板连续铸造装置 Download PDF

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Publication number
WO2018152738A1
WO2018152738A1 PCT/CN2017/074568 CN2017074568W WO2018152738A1 WO 2018152738 A1 WO2018152738 A1 WO 2018152738A1 CN 2017074568 W CN2017074568 W CN 2017074568W WO 2018152738 A1 WO2018152738 A1 WO 2018152738A1
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WIPO (PCT)
Prior art keywords
guide
thin plate
main body
continuous casting
guide roller
Prior art date
Application number
PCT/CN2017/074568
Other languages
English (en)
French (fr)
Inventor
中谷隆文
冈安晋平
堀井健治
于艳
叶长宏
周坚刚
方园
Original Assignee
普锐特冶金技术日本有限公司
宝山钢铁股份有限公司
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 普锐特冶金技术日本有限公司, 宝山钢铁股份有限公司 filed Critical 普锐特冶金技术日本有限公司
Priority to CN201780078545.6A priority Critical patent/CN110312581B/zh
Priority to RU2019124685A priority patent/RU2722550C1/ru
Priority to PCT/CN2017/074568 priority patent/WO2018152738A1/zh
Publication of WO2018152738A1 publication Critical patent/WO2018152738A1/zh

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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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • 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

Definitions

  • the present invention relates to a thin plate continuous casting apparatus having a guide plate (also referred to as a rotary guide).
  • a thin plate (casting belt) drawn from a pair of left and right rolls is guided to a rolling mill via a plurality of guide rolls via a tension applying device (for example, a pair of upper and lower pinch rolls).
  • a tension applying device for example, a pair of upper and lower pinch rolls.
  • the thin plate 2 drawn from the pair of left and right rolls 11a and 11b can be smoothly guided to the plate rolls 235a to d by the guide plate 231.
  • the guide plate 231 is moved between the pair of left and right rolls 11a and 11b and the guide rolls 235a to d, and is formed in a loop-like manner on the pass path of the thin plate 2. Live cover.
  • Patent Document 1 listed below discloses a metal cast strip continuous casting apparatus which casts a strip from a roll gap of a pair of casting rolls by a rotary guide and a guide roll.
  • the tidy tip is conveyed to the pinch roller, and then the slewing guide is returned to the sag position, and after the cast strip is sagged in an annular shape on the lower side of the twin roll casting device, the guide roller is reached, wherein the metal cast strip continuous casting device
  • the guide roller is arranged in a matrix shape from the pinch roller to the twin-roll casting device, and the row is bent downward at one end on the opposite side to the pinch roller, so that the annular cast tape can be smoothly received and guided.
  • Patent Document 2 listed below, as shown in FIG. 5, a thin-plate continuous casting device in which the guide plates 231A are divided into two guide main bodies 231A1 and 231A2 is described.
  • Patent Document 1 Japanese Patent Laid-Open No. Hei 10-263757
  • Patent Document 2 China Authorization Bulletin No. 103182490B
  • Patent Document 3 China Authorization Bulletin No. 10416450B
  • the looper when the looper controls the pass band, the looper can be formed on the pass path of the thin plate 2, but the sheet 2 is transferred by the guide sheet rolls 235a to d. (Transfer portion) forms an unnatural shape (a state in which the bending becomes large with respect to the thin plate 2), and the looper control becomes unstable, so that the breakage is likely to occur.
  • an object of the present invention is to provide a passband state that does not depend on a thin plate taken out from a pair of rollers (in the initial passband and When the looper controls the passband, the sheet becomes a natural shape at the place where the guide sheet roll is transferred, and the looper control does not become unstable, and the sheet is continuously belted, so that the guide roller can be lifted and lowered without being affected by the high temperature from the sheet.
  • the outlet is output to the thin plate of the lateral pass band, and further includes: an opening portion provided on a side surface of the wall portion and being the most upstream side in a pass direction of the thin plate in the guide roller
  • the shaft portion of the first guide roller is penetrated; the support portion rotatably supports the shaft portion; the lifting unit is disposed at an
  • the lateral direction means that the side surface portion of the thin plate facing the circumference of the pair of left and right rolls is taken up from the pair of left and right rollers, and the upper surface portion (surface portion) and The state of the face (back portion) of the following table is such that the thin plate passes through the belt.
  • the support portion has a sealing plate, and the sealing plate can cover the sealing plate even if the support portion is moved up and down by the lifting unit. Opening.
  • the present invention comprises: a drive unit for rotating the first guide roller; and a universal joint drive shaft having one end and the first The end of one of the shaft portions of the guide roller is connected, and the other end is connected to the drive unit.
  • the lifting unit and the opening portion are provided only corresponding to the first guide roller among the plurality of the guide rollers. And the sealing plate.
  • the guide plate has an upper guide main body and a lower guide main body which are divided into two on the pair of left and right rolls and the side of the guide roll.
  • the upper guide main body and the lower guide main body respectively have a shaft body that rotatably supports the upper guide main body and the lower guide main body
  • the thin plate continuous casting device has a lower guide main body lifting unit, The lower guide main body lifting unit lifts and lowers the lower guide main body.
  • the (axis portion) of the first guide roller can be moved up and down by the elevating unit, and the elevating unit is disposed at the outer side of the casting chamber, the influence of the radiant heat from the high-temperature thin plate in the wall portion of the pass band can be hindered. Prevent the high temperature performance of the guide roller lifting unit from deteriorating, so as to maintain the lift Rely on sex. Further, in the initial pass band, the first guide roller is placed at the same height as the other guide rollers in a state where the guide is positioned to guide the thin plate to the guide roller position, so that the thin plate can be easily conveyed from the guide guide roller. .
  • the first guide is placed in a state where the guide is located at a position where the thin plate is not supported after the guide supports the thin plate and guides the guide roller.
  • the roller is located below the other guide roller, and by receiving the thin plate, the thin plate can be naturally bent at the place where the guide roller is transferred, and it is difficult to cause the thin plate to be broken.
  • the opening portion required for the vertical movement of the shaft portion of the first guide roller is provided not only on the wall portion, but also the sealing portion can cover the opening portion even if the support portion moves up and down, the opening portion can be suppressed.
  • the inflow of air (oxygen) prevents oxidation of the sheet.
  • the seal since the seal is filled, it is possible to allow the rotation of the shaft portion and the vertical movement of the shaft portion and to block the flow of air into the casting chamber, and it is also possible to prevent heat from being transmitted to the outside of the casting chamber together with the air flow.
  • the thin plate can be smoothly conveyed, and since the universal joint drive shaft and the drive unit are not exposed to high temperatures, it is possible to prevent these devices. The performance is deteriorated, so that the reliability of the device can be maintained.
  • the first guide roller since the first guide roller is not moved up and down without moving the plurality of guide rollers up and down, it is easy to maintain the airtightness, and it is easy to ensure the reliability of the device.
  • the lower guide can be positioned at the lowering position, so that the lower guide can be positioned at the retracted position where the thin plate is not guided.
  • Fig. 1 is a schematic view of a thin plate continuous casting apparatus according to a first embodiment of the present invention.
  • FIG. 2 is an explanatory view of a lifting device for a guide roller provided in the thin plate continuous casting apparatus, wherein Fig. 2(a) shows a side of the guide roller, Fig. 2(b) shows a side surface of Fig. 2(a), and Fig. 2(c) When the guide roller is lowered, FIG. 2(d) shows the side surface of FIG. 2(c).
  • Fig. 3 is a schematic view of a thin plate continuous casting apparatus according to a second embodiment of the present invention.
  • Fig. 4 is an operation explanatory view showing an example of a conventional thin-plate continuous casting apparatus, showing an initial pass band.
  • Fig. 5 is an operation explanatory view showing another example of the conventional thin plate continuous casting apparatus, showing an initial pass band.
  • a thin-plate continuous casting apparatus and a thin-plate continuous casting method according to a first embodiment of the present invention will be described with reference to Figs. 1 to 3 .
  • the thin plate continuous casting apparatus 100 includes a pair of left and right rolls 11a and 11b, and a thin plate (casting belt) 2 that is drawn downward from the pair of left and right rolls 11a and 11b toward the guide roll.
  • the group 35 is laterally guided by the guide plate 31; the thin plate 2 guided laterally by the guide plate 31 is supported from below, and guided to the guide roller group 35 of the transverse pass band; the tension is imparted toward the thin plate 2 which is passed through the guide roller group 35.
  • a pair of pinch rolls (tension applying means) 37a, 37b are provided.
  • the guide plate 31 is disposed below the rollers 11a, 11b.
  • the guide plate 31 is formed in a shape that faces the thin plate 2 directly below the rollers 11a and 11b and protrudes toward the side opposite to the thin plate 2, and extends from one end (upper end) side toward the other end (lower end) side. . That is, the guide plate 31 has an arc-shaped cross section.
  • side turns 13a, 13b are provided at both axial ends of the rolls 11a, 11b.
  • the molten metal 1 is supplied to an internal space (melt pool) 15 of a moving mold composed of the rolls 11a and 11b and the side turns 13a and 13b via a nozzle (not shown).
  • the guide roller group 35 is disposed below the rollers 11a, 11b and the guide 31.
  • the guide roller group 35 has four guide roller 35a to d arranged in parallel in the pass direction of the thin plate 2.
  • the pinch rollers 37a and 37b are disposed adjacent to the fourth guide roller 35d.
  • the pinch rolls 37a and 37b are provided with a rolling mill (not shown) for rolling the thin plate 2 on the downstream side in the pass direction of the thin plate 2, and the thin plate 2 to which the tension is applied is rolled by the rolling mill.
  • a rolling mill (not shown) for rolling the thin plate 2 on the downstream side in the pass direction of the thin plate 2, and the thin plate 2 to which the tension is applied is rolled by the rolling mill.
  • the details will be described later, the first guide roller (first guide roller) 35a positioned at the rising position, the second to fourth guide rollers 35b to d, the pinch rollers 37a, 37b, and the rolling mill. It is configured to be able to pass the thin plate 2 in a substantially horizontal direction.
  • the guide plate 31 is supported by a pivot (shaft body) 32 provided on the proximal end side side so that the distal end portion (lower end portion) 31a is rotatably provided.
  • the casting chamber 20 has a hermetic structure surrounded by the top wall portion 21 and the bottom wall portion 22 and the side wall portions 23, 24, 25, and 26. That is, it has an inlet 40 and an outlet 41, and is constituted by a wall portion that forms a space in which the guide plate 31 and the guide roller group 35 are included, and the inlet 40 allows the thin plate 2 to be input below the pair of rollers 11a, 11b, and the outlet 41 allows Output to the thin plate 2 of the lateral pass band.
  • An opening portion 23a is provided in the side wall portion (operation side wall portion) 23 and the side wall portion (drive side wall portion) 24, 24a.
  • the shaft portions 35aa and 35ab at both ends of the first guide roller 35a are disposed so as to protrude from the side wall portions 23 and 24 toward the outside of the casting chamber.
  • the cast-out side of the side wall portions 23 and 24 including the openings 23a and 24a has box-shaped support portions 42 and 43, and the support portions 42 and 43 are provided with bearings 48 and 49.
  • the shaft portions 35aa, 35ab at both ends of the first guide roller 35a are rotatably supported by the bearings 48, 49.
  • the support portions 42, 43 are provided such that the sealing plates 27, 28 to be described next are joined to the side wall portions 23, 24.
  • the support portions 42 and 43 are connected to a piston rod 61a of a hydraulic cylinder 61 to be described later.
  • the guide roller lifting and lowering device 60 having the hydraulic cylinder 61 serves as an elevating unit that elevates and lowers the support portions 42 and 43.
  • the shaft portions 35aa and 35ab move up and down by the operation of the piston rod 61a.
  • Sealing plates 27 and 28 are provided on the openings 23a and 24a, respectively. Inserting holes 27aa and 28aa are formed in the sealing plates 27 and 28, and the shaft portions 35aa and 35ab of the first guide roller 35a are inserted through the through holes 27aa and 28aa.
  • the first guide roller 35a moves (lifts) in the up and down direction as the piston rod 61a of the hydraulic cylinder 61 moves forward and backward as described later in detail, and the seal plates 27, 28 are disposed to correspond to the movement to the casting chamber
  • the sealing between the side wall portions 23 and 24 and the side wall portions 23 and 24 can be performed along the side wall portions 23 and 24 in the vertical direction.
  • the sealing plates 27 and 28 have a shape that can cover the openings 23a and 24a even when the hydraulic cylinder 61 moves up and down.
  • Seals 44, 45 for sealing are disposed at the edges of the sealing plates 27, 28 one turn to be interposed between the sealing plates 27, 28 and the side wall portions 23, 24. Further, since the insertion holes 27aa and 27aa of the seal plates 27 and 28 are sealed with the shaft portions 35aa and 35ab, the seals 46 and 47 are provided. The components for mounting these seals 44, 45, 46, 47 are suitably disposed on the sealing plates 27, 28. The seals 44, 45, 46, 47 not only have the property of impeding the entry of air (oxygen) into the casting chamber 20, but also have high temperature radiant heat and heat transfer resistance with respect to the thin plate 2 in the casting chamber 20.
  • One end portion of the shaft portion 35aa of the first guide roller 35a is disposed so as to protrude from the opening portion 43a of the support portion 43 on the outside of the casting chamber, and is coupled to the drive motor 38 via the universal joint drive shaft 39.
  • the shaft is connected. That is, by driving the drive motor 38, the rotational force is transmitted to the first guide roller 35a via the universal joint drive shaft 39.
  • the first guide roller 35a is rotationally driven by the drive motor 38, whereby the thin plate 2 can be smoothly passed through the second and subsequent guide rollers 35b to d.
  • the thin plate continuous casting apparatus 100 includes a guide moving device 50 that moves the guide 31 between the thin plate guiding position and the retracted position.
  • the guide moving device 50 includes a hydraulic cylinder 51, hydraulic inlet and outlet passages 52a and 52b, a solenoid valve 53, and a connecting member 54.
  • the hydraulic cylinder 51 is disposed such that the distal end portion of the piston rod 51a of the hydraulic cylinder 51 faces the thin plate 2 directly below the pair of left and right rollers 11a and 11b, and
  • the plug lever 51a is disposed in a lateral direction (for example, a horizontal direction) in a forward and backward direction.
  • the distal end portion of the piston rod 51a is fixed to one end side of the connecting member 54.
  • the other end side of the connecting member 54 is fixed to the pivot 32.
  • the sheet guiding position refers to a position related to the guiding of the sheet 2
  • the retracted position refers to a position unrelated to the guiding.
  • One end side of the hydraulic inlet and outlet passages 52a and 52b is connected to the distal end side and the proximal end side of the hydraulic cylinder 51, respectively.
  • a solenoid valve 53 is provided on the other end side of the hydraulic inlet and outlet passages 52a, 52b.
  • the solenoid valve 53 is connected to a hydraulic supply source (not shown). The amount of advancement and retraction of the piston rod 51a is adjusted by adjusting the amount of hydraulic pressure that is directed to the hydraulic cylinder 51 by the solenoid valve 53.
  • the thin plate continuous casting apparatus 100 further includes a guide roller lifting device 60 that rotatably performs the first guide roller 35a disposed on the upstream side in the passband direction of the thin plate 2 in the guide roller group 35.
  • the supported support portions 42, 43 are raised and lowered.
  • the guide roller lifting device 60 includes a hydraulic cylinder 61, hydraulic inlet and outlet passages 62a and 62b, and a solenoid valve 63.
  • the hydraulic cylinder 61 is disposed such that the distal end portion of the piston rod 61a of the hydraulic cylinder 61 faces upward and the piston rod 61a advances and retracts in the vertical direction (for example, the vertical direction).
  • the piston rod 61a is rotatably supported by the guide roller 35a via the support portions 42, 43 and the bearings 48, 49. Further, the guide roller lifting device 60 is provided at both ends of the guide roller 35a, and the lifting devices on both sides operate in synchronization.
  • One end side of the hydraulic inlet and outlet passages 62a and 62b is connected to the distal end side and the proximal end side of the hydraulic cylinder 61, respectively.
  • a solenoid valve 63 is provided on the other end side of the hydraulic inlet and outlet passages 62a, 62b.
  • the solenoid valve 63 is connected to a hydraulic supply source (not shown). The amount of advancement and retraction of the piston rod 61a is adjusted by adjusting the amount of hydraulic pressure that is directed to the hydraulic cylinder 61 by the solenoid valve 63.
  • the piston rod 61a advances and retracts, it is transmitted to the first guide roller 35a via the support portions 42, 43 and the bearings 48, 49 and the shaft portions 35aa, 35ab, and is the same as the second to fourth guide rollers 35b to d.
  • the height rise position is lower than the second to fourth guide rolls 35b to d and the loop can be controlled to pass the loop, the bending of the thin plate 2 is reduced.
  • the root guide roller 35a is lifted and lowered. Further, as will be described later in detail, the guide roller lifting device 60 is controlled in such a manner that the first guide roller 35a is positioned at the raised position at the time of initial passband, and when the looper is controlled by the looper The first guide roller 35a is positioned at the lowered position.
  • the mouth portion is provided with a support portion and a sealing plate.
  • the case where it is provided only on the first guide roller 35a is excellent in that it is easy to maintain the sealing property and the reliability of the device.
  • not only the shaft portion of the first guide roller 35a but also the shaft portion of the plurality of guide rollers such as the second guide roller 35b and the third guide roller 35c may be inserted through the same opening portion.
  • the support portion, the sealing plate, and the lifting unit can be used in combination.
  • a support portion or the like is required. In this case, it is necessary to appropriately set the seal between the adjacent sealing plates.
  • the guide roller raising and lowering device 60 for raising and lowering the first guide roller 35a, it is possible to correspond to the passband state of the thin plate 2 drawn from the pair of rollers 11a and 11b (in the initial passband and live)
  • the first guide roller 35a is lifted and lowered.
  • the first guide roller 35a can be positioned at the same height as the second and subsequent guide rollers 35b to d, and when the looper controls the passband, The first guide roller 35a is positioned at the lowering position of the height below the second and subsequent guide rollers 35b to d.
  • the bending load of the thin plate 2 can be suppressed, and the thin plate 2 can be smoothly passed through.
  • the first guide roller 35a can be moved up and down, when the first guide roller 35a cannot be moved up and down, it is not necessary to provide an extra guide roller that guides the thin plate to the same height as the first guide roller.
  • the length of the device can be shortened by this amount.
  • the guide 31 can be shortened, the guide 31 can be quickly moved. Thereby, the pass band can be smoothly performed at the initial pass of the thin plate 2. Since it is not necessary to provide an extra guide roller, it is possible to reduce the cost and time of maintenance and repair in this amount. Moreover, it is possible to deepen the looper and facilitate linear speed control (loop control).
  • the inside of the casting chamber 20 is filled with an inert gas in order to prevent oxidation of the surface of the thin plate 2
  • the length of the apparatus can be shortened, the volume in the casting chamber 20 can be reduced. That is, the miniaturization of the thin plate continuous casting apparatus 100 can be achieved.
  • the guide roller lifting device 60 is controlled such that the first guide roller 35a is positioned at the same height as the other guide rollers 35b to d, and when the looper controls the passband, The guide roller is lifted and lowered in such a manner that the first guide roller 35a is positioned below the other guide rollers 35b to d and positioned at the lowered position capable of reducing the bending with respect to the thin plate 2.
  • the device 60 controls the control device 90 so that the first guide roller 35a can be positioned at the raised position or the lowered position corresponding to the passband state of the thin plate 2.
  • the pass band can be controlled to be transferred to the looper, so that the load on the thin plate 2 can be reduced.
  • the thin plate 2 guided to the first guide roller 35a can be smoothly passed to the second and subsequent guide rollers 35b to d.
  • a thin plate continuous casting apparatus according to a second embodiment of the present invention will be described with reference to Fig. 3 .
  • the guide plate included in the thin-plate continuous casting apparatus according to the first embodiment shown in FIG. 1 is changed.
  • the other structures are substantially the same as those of the above-described device shown in FIG. 1, and the same reference numerals are given to the same devices, and the overlapping description will be appropriately omitted.
  • the thin plate continuous casting apparatus 100A includes a guide plate 31A disposed below the pair of left and right rolls 11a and 11b.
  • the guide plate 31A includes an upper guide main body (first guide main body) 31A1 and a lower guide main body (second guide main body) 31A2 which are divided into two on the pair of left and right rolls 11a and 11b and on the side of the guide rolls 35a to d.
  • the thin plate continuous casting apparatus 100A includes an upper main guide main body moving device 50 and a lower main guide main body moving device 70 that move the upper main guide main body 31A1 and the lower main guide main body 31A2 between the thin plate guiding position and the retracted position, and includes the lower main guide main body 31A2 Lower guide body lifting device 80.
  • the sheet guiding position refers to a position related to the guiding of the sheet 2.
  • the retracted position refers to a position that is independent of the guiding of the thin plate 2.
  • the upper guide main body 31A1 is disposed so as to be close to the pair of left and right rollers 11a and 11b.
  • a pivot shaft 32 is provided on the proximal end portion (upper end portion) side of the upper guide main body 31A1.
  • the other end side of the connecting member 54 is fixed to the pivot 32.
  • a distal end portion of the piston rod 51a of the hydraulic cylinder 51 is fixed to one end side of the connecting member 54.
  • the upper main guide main body 31A1 is the same as the above-described thin plate continuous casting apparatus 100, and the thin plate 2 is guided to the thin plate guiding position of the guide roller 35a to d in cooperation with the lower guide main body 31A2 by the guide plate (upper guide main body) moving the device 50.
  • the guide plate (upper guide main body) moving the device 50 Between the retracted positions separated from the pass path of the thin plate 2 between the pair of left and right rolls 11a and 11b and the plurality of guide rolls 35a to d, the distal end portion 31A1a side of the upper guide main body 31A1 is rotated.
  • the lower guide main body 31A2 is disposed close to the first guide roller 35a.
  • the lower guide main body 31A2 is supported by a pivot (shaft body) 34 provided on the side of the proximal end portion (right end portion) 31A2b so as to be rotatable around the distal end portion (left end portion) 31A2a side.
  • the lower guide main body moving device 70 includes a hydraulic cylinder 71, hydraulic inlet and outlet passages 72a and 72b, a solenoid valve 73, and a connecting member 74.
  • the hydraulic cylinder 71 faces upward from the tip end portion of the piston rod 71a of the hydraulic cylinder 71.
  • the arrangement is such that the piston rod 71a is advanced and retracted in the vertical direction (for example, the vertical direction).
  • the distal end portion of the piston rod 71a is fixed to one end side of the connecting member 74.
  • the other end side of the connecting member 74 is fixed to the pivot shaft 34.
  • One end side of the hydraulic inlet and outlet passages 72a and 72b is connected to the distal end side and the proximal end side of the hydraulic cylinder 71, respectively.
  • a solenoid valve 73 is provided on the other end side of the hydraulic inlet and outlet passages 72a, 72b.
  • the solenoid valve 73 is connected to a hydraulic supply source (not shown). The amount of advancement and retreat of the piston rod 71a is adjusted by adjusting the amount of hydraulic pressure supplied to the hydraulic cylinder 71 by the solenoid valve 73.
  • the piston rod 71a advances and retracts, it is transmitted to the lower guide main body 31A2 via the connecting member 74 and the pivot shaft 34, and guides the thin plate 2 to the thin plate guiding position of the guide rolls 35a to 35b in cooperation with the upper main guide main body 31A1, and from the left and right sides.
  • the distal end portion 31A2a of the lower guide main body 31A2 is rotated between the pair of rollers 11a and 11b and the retracted position at which the pass path of the thin plate 2 between the plurality of guide rollers 35a to 32b is separated.
  • the lower guide main body lifting device 80 includes a hydraulic cylinder 81, hydraulic inlet and outlet passages 82a and 82b, and a solenoid valve 83.
  • the hydraulic cylinder 81 is disposed such that the distal end portion of the piston rod 81a of the hydraulic cylinder 81 faces upward, and is disposed such that the piston rod 81a advances and retracts in the vertical direction (for example, the vertical direction).
  • the piston rod 81a rotatably supports the lower guide main body 31A2.
  • the lower guide main body lifting device 80 is provided at both ends of the lower guide main body 31A2, and these devices operate in synchronization.
  • One end side of the hydraulic inlet and outlet passages 82a and 82b is connected to the distal end side and the proximal end side of the hydraulic cylinder 81, respectively.
  • a solenoid valve 83 is provided on the other end side of the hydraulic inlet and outlet passages 82a, 82b.
  • the solenoid valve 83 is connected to a hydraulic supply source (not shown). The amount of advancement and retraction of the piston rod 81a is adjusted by adjusting the amount of hydraulic pressure supplied to the hydraulic cylinder 81 by the solenoid valve 83.
  • the piston rod 81a advances and retracts, it is transmitted to the lower guide main body 31A2, and at the same height as the second to fourth guide rollers 35b to d, and the second to fourth guide rollers 35b to d
  • the lower guide main body 31A2 is lifted and lowered between the lowered position of the lower height. Further, as will be described later in detail, the lower guide main body lifting device 80 is controlled in such a manner that the lower guide main body 31A2 is positioned at the raised position at the initial pass band, and the loop control is passed. When the belt is worn, the lower guide main body 31A2 is positioned at the lowered position.
  • the thin plate continuous casting apparatus 100A includes a control device 90A that controls the solenoid valves 53, 63, 73, 83, and the like in accordance with the passband state of the thin plate 2 (the initial passband state and the looper control passband state).
  • the control device 90A initially passes the thin plate 2
  • the upper guide main body 31A1 and the lower guide main body 31A2 are positioned at the thin plate guiding position to position the first guide roller 35a at the raised position.
  • the solenoid valves 53, 63, 73, 83, and the like are controlled.
  • control device 90A is When the looper of the thin plate 2 controls the passband, the upper guide main body 31A1 is positioned at the retracted position to position the first guide roller 35a at the lowered position and the lower guide main body 31A2 is positioned at the retracted position and The solenoid valve 53, 63, 73, 83, and the like are controlled in the manner of the lowered position.
  • the guide plate 31A has the upper guide main body 31A1 and the lower guide main body 31A2 which are divided into two on the pair of right and left rolls 11a and 11b and on the side of the guide rolls 35a to d, and the upper guide main body 31A1 and the lower guide main body 31A2.
  • Each of the pivots 32 and 34 that support the upper main guide 31A1 and the lower main guide 31A2 in a rotatable manner has a lower guide main body lifting and lowering device 80 that moves the lower main guide main body 31A2 up and down, and the first embodiment described above
  • the upper guide main body 31A1 and the lower guide are provided in accordance with the passband state of the thin plate 2 taken out from the pair of rollers 11a and 11b (when the initial passband and the looper control the passband).
  • the main body 31A2 moves and can lift and lower the first guide roller 35a.
  • the upper guide main body 31A1 can be positioned at the thin plate guiding position, and the first guide roller 35a can be positioned at the same height as the second and subsequent guide rollers 35b to d.
  • the lower guide main body 31A2 is positioned at the thin plate guiding position and the raised position.
  • the upper guide main body 31A1 can be positioned at the retracted position, and the first guide roller 35a can be positioned at a position comparable to the second and subsequent guide rolls 35b to d.
  • the lower guide main body 31A2 is positioned at the retracted position and the lowered position. As a result, the thin plate 2 can be smoothly passed through while suppressing the bending load with respect to the thin plate 2.
  • the guide plate 31A is divided into two upper guide main bodies 31A1 and lower guide main bodies 31A2, and the mass of each of the guide main bodies 31A1, 31A2 can be reduced as compared with the case of one guide 31, so that the upper guide main body 31A1 and the upper guide main body 31A1 can be smoothly
  • the lower guide main body 31A2 moves rapidly. Thereby, the pass band can be smoothly performed at the time of initial pass.
  • the thin plate continuous casting apparatuses 100 and 100A including the guide roller lifting and lowering device 60 for raising and lowering the first guide roller 35a are described.
  • the second and subsequent guide rollers 35b to d may be provided to be lifted and lowered.
  • the looped sagging loop forms a shape having a large curvature and can reduce the load on the sheet 2 in this amount.
  • the thin plate continuous casting apparatuses 100 and 100A including the guide roller groups 35 of the first to fourth guide rolls 35a to 35b have been described.
  • the present invention is not limited to the four guide rolls.
  • the thin plate continuous casting apparatuses 100 and 100A including the drive motor 38 that rotationally drives the first guide roller 35a are described.
  • the second and subsequent guide rollers 35b to d may be rotated.
  • a thin plate continuous casting device for driving a drive motor Even in such a thin-plate continuous casting apparatus, the same operational effects as the above-described thin-plate continuous casting apparatuses 100 and 100A can be achieved.
  • the (the shaft portions 35aa, 35ab) of the first guide roller 35a can be moved up and down by the guide roller lifting device 60, and the guide roller lifting device 60 is disposed at the outside of the casting chamber side of the side wall portions 23, 24. Therefore, it is possible to prevent the influence of the radiant heat from the thin plate 2 having a high temperature in the wall portion of the pass band, and to prevent the deterioration of the high temperature of the guide roller lifting device 60, and to maintain the reliability of the lifting operation. Further, in the initial pass band, the first guide roller 35a is placed at the same height as the other guide rollers 35b, 35c, 35d in a state where the guide 31 is positioned to guide the thin plate 2 to the guide roller 35 at the initial pass band.
  • the position makes it possible to easily convey the thin plate 2 from the guide plate 31 to the guide roller group 35.
  • the first guide roller 35a is raised and lowered, so that after the guide 31 supports the thin plate 2 and is guided to the first guide roller 35a, the guide 31 is located at a position where the thin plate 2 is not supported.
  • the first guide roller 35a is positioned lower than the other guide rollers 35b, 35c, 35d, and by receiving the thin plate 2, the thin plate 2 can be made natural in the place where the guide roller group 35 is transferred. In the bent state, it is difficult to produce the broken band of the thin plate 2.
  • the opening portions 23a, 24a required for the vertical movement of the shaft portions 35aa, 35ab of the first guide roller 35a are provided not only on the wall portions 23, 24, but also the support portions 42, 43 are moved up and down, the sealing plates 27, 28 Since the openings 23a and 24a can be covered, the inflow of air (oxygen) from the openings 23a and 24a can be suppressed, and oxidation of the thin plate 2 can be prevented.
  • seals 44, 45, 46, 47 are filled, it is possible to allow the rotation of the shaft portions 35aa, 35ab and the up and down movement of the shaft portions 35aa, 35ab and hinder the flow of air into the casting chamber 20, and it is possible to prevent the heat from being transmitted together with the air flow. Outside the casting chamber 20.
  • the thin plate 2 can be smoothly conveyed, and since the universal joint drive shaft 39 and the drive motor 38 are not exposed to high temperatures, it is possible to prevent these devices. The performance is deteriorated, so that the reliability of the device can be maintained.
  • the body 31A2 is located at a lower position, so that the lower guide 31A2 can be positioned at the retracted position where the thin plate 2 is not guided.
  • the present invention it is possible to smoothly perform the thin plate while suppressing the load with respect to the thin plate without depending on the pass band state of the thin plate taken out from the pair of rolls (in the case of the initial pass band and the time when the looper controls the pass band).
  • the pass band is performed, and therefore, it can be advantageously utilized in the iron industry or the like.
  • guide plate moving device guide plate moving unit, upper guide plate main body moving unit
  • control unit control unit
  • control device control unit, lower guide body lifting control unit

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

一种薄板连续铸造装置，具备：开口部(23a、24a)，其被设置在铸造室的侧面的侧壁部(23、24)上，并且导板辊组(35)中的薄板(2)的通带方向的最上游侧的第一导板辊(35a)的轴部(35aa、35ab)进行贯穿；支承部(42、43)，其以可旋转的方式对轴部(35aa、35ab)进行支承；导板辊升降装置(60)，其被设置在铸造室(20)的外侧处，并使支承部(42、43)升降。该薄板连续铸造装置使形成的薄板不易断带并且可靠性较高。

Description

薄板连续铸造装置 技术领域
本发明涉及一种具备导板(或者称为回转导板)的薄板连续铸造装置。
背景技术
在薄板连续铸造装置中，从左右一对辊引出的薄板(铸带)通过多个导板辊而经由张力赋予装置(例如，上下一对夹送辊)被向轧机引导。例如，如图4所示，在初期通带时，有时采用如下方式，即，利用导板231，顺利地将从左右一对辊11a、11b引出的薄板2向导板辊235a～d引导。在活套控制通带时，有时采用如下方式，即，导板231被移动在左右一对辊11a、11b和导板辊235a～d之间，在薄板2的通带路径上，形成以环状下垂的活套。由此，即使在薄板2从左右一对辊11a、11b被引出的速度(铸造速度)和通过轧机而使薄板2被轧制的速度(轧制速度)之间存在差值，也能够连续铸造薄板2。
在下述专利文献1中，记载了如下的金属铸带连续铸造装置，所述金属铸带连续铸造装置通过回转导板以及导板辊而将从一对铸造辊的辊间隙中伸出的铸带整齐的顶端向夹送辊输送，接着，回转导板返回下垂位置，在铸带于双辊铸造装置下侧以环状下垂之后，到达导板辊，其中，所述金属铸带连续铸造装置以导板辊从夹送辊向双辊铸造装置回溯的方式配置为行列状，行列通过在与夹送辊相反侧的一端处向下方弯曲从而能够顺利地接受并引导环状的铸带。
在下述专利文献2中，如图5所示，记载了由导板231A被分成两个的导板主体231A1、231A2构成的薄板连续铸造装置。
在先技术文献
专利文献
专利文献1：日本特开平10-263757号公报
专利文献2：中国授权公告号103182490B
专利文献3：中国授权公告号102416450B
发明内容
发明所要解决的课题
但是，在图4所记载的薄板连续铸造装置中，在活套控制通带时，能够在薄板2的通带路径上形成活套，但是，由于薄板2通过向导板辊235a～d转移的地方(转移部)而形成不自然的形状(相对于薄板2，弯曲变大的状态)，活套控制变得不稳定，因此，易于产生断带。
在专利文献1所记载的金属铸带连续铸造装置中，由于在初期通带时从回转导板向铸带支承辊的铸带的转移较顺利，在活套控制通带时活套成为自然的形状(向铸带的弯曲较少的形状)，因此，能够进行稳定的操作，由于在初期通带时需要配置(仅在活套控制通带时使用)多余的铸带导板辊，因此，存在如下的问题，即，在该量上，增加了装置的长度、维护检修的费用以及时间。另外，存在如下的问题，即，为了通过轧机以预定的板厚对铸带进行保持，相对于经常变化的铸造速度，当铸带支承辊的数量增加时，难以进行线性速度控制。
在专利文献2所记载的薄板连续铸造装置中，与由一个部件构成导板的情况相比，由于能够迅速地使导板主体移动，因此，虽然薄板的顶端通带性变得较高，但由于薄板2通过向导板辊235a～d转移的地方(转移部)而形成不自然的形状(相对于薄板2，弯曲变大的状态)，活套控制变得不稳定，因此，易于产生断带。
在专利文献3所述的薄板连续铸造装置中，由于采用如下方式，即，在活套控制通带时，直到从一对冷却辊引出的薄板被稳定地水平移送而不断带，因此使多个导板辊斜向移动。使导板辊移动的机构较为复杂，并且会降低装置的可靠性。尤其，在薄板连续铸造装置中，由于薄板温度较高，因此由于该辐射的影响从而易于加快设备的变差，从而可靠性降低，并且设备的保养的负担较大。
通过以上的情况，由于本发明是为了解决前述的问题而作出的发明，因此，本发明的目的在于，提供一种不依赖于从一对辊引出的薄板的通带状态(初期通带时以及活套控制通带时)，薄板在向导板辊转移的地方成为自然形状，并且以活套控制不会变得不稳定，薄板不断带，可使导板辊升降并且不受来自薄板的高温的影响的方式形成的可靠性较高的薄板连续铸造装置。
用于解决课题的方法。
用于解决上述课题的本发明所涉及的薄板连续铸造装置具备：一对辊，其进行旋转而从下方引出薄板；导板，其具有将所引出的薄板向横向引导的弧状 的截面；多个导板辊，其将被向横向引导的薄板置载，并旋转而向横向通带；导板移动单元，其使所述导板在与薄板的引导相关的位置、与引导无关的退避位置之间移动；铸造室，其具有入口和出口，并由形成将所述导板、所述导板辊包括在内部的空间的壁部构成，所述入口在所述一对辊的下方使薄板输入，所述出口使向横向通带的薄板输出，还具备：开口部，其被设置在所述壁部的侧面上，并且被所述导板辊中的所述薄板的通带方向的最上游侧的第一导板辊的轴部进行贯穿；支承部，其以可旋转的方式对所述轴部进行支承；升降单元，其被设置在所述铸造室的外侧处，并使所述支承部升降。
并且，所述横向是指，以从所述左右一对辊向下方引出，并将与该左右一对辊的周面对置的所述薄板的侧面部设为上表面部(表面部)以及下表面部(背面部)的状态而使所述薄板通带的方向。
而且，在用于解决上述课题的本发明所涉及的薄板连续铸造装置中，所述支承部具有密封板，即使所述支承部被所述升降单元上下移动，所述密封板也能够覆盖所述开口部。
而且，在用于解决上述课题的本发明所涉及的薄板连续铸造装置中，在所述密封板与所述轴部之间、以及所述密封板与所述壁部的侧面之间分别介入有密封件。
而且，在用于解决上述课题的本发明所涉及的薄板连续铸造装置中，具备：驱动单元，其用于使所述第一导板辊旋转；万向节传动轴，其一端与所述第一导板辊的一方的轴部的端部连接，另一端与所述驱动单元连接。
而且，在用于解决上述课题的本发明所涉及的薄板连续铸造装置中，仅与多个所述导板辊中的所述第一导板辊相对应，具备有所述升降单元、所述开口部以及所述密封板。
而且，在用于解决上述课题的本发明所涉及的薄板连续铸造装置中，所述导板具有在所述左右一对辊侧以及所述导板辊侧被分成两个的上导板主体以及下导板主体，所述上导板主体以及所述下导板主体分别具有以能够回转的方式对该上导板主体以及该下导板主体进行支承的轴体，所述薄板连续铸造装置具有下导板主体升降单元，所述下导板主体升降单元使所述下导板主体升降。
发明效果
根据本发明，由于能够通过升降单元使第一导板辊(的轴部)上下移动，并且升降单元设置在铸造室的外侧处，因此能够阻碍来自通带壁部内的高温薄板的辐射热的影响，防止导板辊升降单元高温性能变差，从而能够维持升降可 靠性。此外，在初期通带时，在导板位于将薄板引导至导板辊位置的状态下，使第一导板辊位于与其他的导板辊相同高度的位置，从而能够易于将薄板从导板向导板辊进行输送。紧接着在所实施的活套控制阶段通带时，通过使第一导板辊下降，从而在导板支承薄板并向导板辊引导之后，在导板位于不支承薄板的位置的状态下，使第一导板辊位于与其他的导板辊相比靠下的位置，并且通过接收薄板，从而能够在向导板辊转移的地方，使薄板成为自然的弯曲状态，难以产生薄板的断带。
此外，根据本发明，由于不仅在壁部上具有第一导板辊的轴部的上下移动所需要的开口部，并且即使支承部上下移动，密封板也能够覆盖开口部，因此能够抑制来自开口部的空气(氧气)的流入，从而防止薄板的氧化。
此外，根据本发明，由于填充有密封件，因此能够容许轴部的旋转和轴部的上下移动并且阻碍空气流入铸造室，此外能够阻碍热量与气流一起传递至铸造室外。
此外，根据本发明，由于配置于最上游侧处的第一导板辊进行自转，因此能够顺利输送薄板，并且，由于万向节传动轴和驱动单元没有暴露于高温下，因此能够防止这些装置的性能变差，从而能够维持装置的可靠性。
此外，根据本发明，由于并不使多个导板辊上下移动，而仅使第一导板辊上下移动，因此维持密闭性变得容易，并且，易于确保设备的可靠性。
此外，根据本发明，即使在使第一导板辊位于下降位置的情况下，通过使下导板本体位于更下降的位置，从而能够使下导板位于不引导薄板的退避位置。
附图说明
图1为本发明的第一实施方式所涉及的薄板连续铸造装置的示意图。
图2为所述薄板连续铸造装置所具备的导板辊的升降装置的说明图，图2(a)表示导板辊上升时，图2(b)表示图2(a)的侧面，图2(c)表示导板辊下降时，图2(d)表示图2(c)的侧面。
图3为本发明的第二实施方式所涉及的薄板连续铸造装置的示意图。
图4为现有的薄板连续铸造装置的一例的动作说明图，表示初期通带时。
图5为现有的薄板连续铸造装置的其他例的动作说明图，表示初期通带时。
具体实施方式
以下，对用于实施本发明所涉及的薄板连续铸造装置以及薄板连续铸造方法的方式进行说明，本发明并不仅仅限定于根据附图进行说明的以下的实施方式。
[第一实施方式]
参照图1～图3，对本发明的第一实施方式所涉及的薄板连续铸造装置以及薄板连续铸造方法进行说明。
如图1所示，本实施方式所涉及的薄板连续铸造装置100具备：左右一对辊11a、11b；将从左右一对辊11a、11b向下方引出的薄板(铸带)2朝向导板辊组35横向引导的导板31；从下方对通过导板31而横向引导的薄板2进行支承，并导向横向通带的导板辊组35；朝向通过导板辊组35而被通带的薄板2赋予张力的上下一对夹送辊(张力赋予装置)37a、37b。
导板31被配置在辊11a、11b的下方。导板31形成与辊11a、11b正下方的薄板2对置并向与薄板2相反侧突出，并从一方的端部(上端部)侧朝向另一方的端部(下端部)侧弯曲延伸的形状。即，导板31具有弧状的截面。
并且，在辊11a、11b的轴向两端处设置有侧堰13a、13b。熔融金属1经由喷嘴(未图示)而被供给至由辊11a、11b以及侧堰13a、13b构成的移动铸型的内部空间(熔池)15。导板辊组35被配置在辊11a、11b以及导板31的下方。导板辊组35具有在薄板2的通带方向上并列配置的四根的导板辊35a～d。夹送辊37a、37b与第四根导板辊35d邻接配置。针对夹送辊37a、37b，在薄板2的通带方向下游侧，设置有对薄板2进行轧制的轧机(未图示)，被赋予张力的薄板2通过所述轧机而被轧制。详细情况将在后文叙述，定位于上升位置的第一根导板辊(第一导板辊)35a、第二根～第四根的导板辊35b～d、夹送辊37a、37b以及所述轧机被配置为：能够在大致水平方向上对薄板2进行通带。
导板31通过以顶端部(下端部)31a侧成为回转自如的方式设置于基端部侧的枢轴(轴体)32而被支承。
如图1以及图2所示，上述的导板31、导板辊组35以及夹送辊37a、37b被配置在铸造室20内。铸造室20形成通过顶部壁部21和底壁部22和侧壁部23、24、25、26而被包围的密闭构造。即，其具有入口40和出口41，并由形成将导板31和导板辊组35包括在内部的空间的壁部构成，入口40在一对辊11a、11b的下方使薄板2输入，出口41使向横向通带的薄板2输出。在侧壁部(操作侧侧壁部)23以及侧壁部(驱动侧侧壁部)24，设置有开口部23a、 24a。第一根导板辊35a的两端的轴部35aa、35ab以从侧壁部23、24向铸造室外侧突出的方式而被配置。
在具备有所述开口部23a、24a的侧壁部23、24的铸造室外侧处，具有箱状的支承部42、43，该支承部42、43具备轴承48、49。第一导板辊35a的两端的轴部35aa、35ab以可旋转的方式而被该轴承48、49支承。而且，所述支承部42、43被设置为，在所述侧壁部23、24处相接有下一个说明的密封板27、28。所述支承部42、43与后述的液压缸61的活塞杆61a连接。具有该液压缸61的导板辊升降装置60成为使所述支承部42、43升降的升降单元，所述轴部35aa、35ab通过该活塞杆61a的动作而上下移动。
在开口部23a、24a上，分别设置有密封板27、28。在密封板27、28上，形成有插穿孔27aa、28aa，第一根导板辊35a的轴部35aa、35ab插穿插穿孔27aa、28aa。随着后文详细描述的液压缸61的活塞杆61a的进退，第一根导板辊35a在上下方向上移动(升降)，密封板27、28被设置为，在对应于该移动而对铸造室20和侧壁部23、24之间进行密封的同时，能够在上下方向上沿着该侧壁部23、24进行移动。密封板27、28具有即使被液压缸61上下移动，也能够覆盖开口部23a、24a的形状。
用于密封的密封件44、45呈一周被设置在所述密封板27、28的边缘处，以介于所述密封板27、28与所述侧壁部23、24之间。此外，由于关于所述密封板27、28的所述插穿孔27aa、27aa，对与所述轴部35aa、35ab之间进行密封，因此设置有密封件46、47。用于安装这些密封件44、45、46、47的部件适当地被设置在密封板27、28上。所述密封件44、45、46、47不仅具有阻碍空气(氧气)进入铸造室20的性能，还具有相对于铸造室20内的薄板2的高温的辐射热和热传导的耐高温性能。
第一根导板辊35a的轴部35aa的一方的端部以与支承部43的开口部43a相比靠铸造室外侧突出的方式而配置，并经由万向节传动轴39而与驱动电机38的轴部连接。即，通过对驱动电机38进行驱动，旋转力经由万向节传动轴39而传递至第一根导板辊35a。通过驱动电机38而对第一根导板辊35a进行旋转驱动，由此，能够将薄板2向第二根以后的导板辊35b～d顺利地通带。
薄板连续铸造装置100具备在薄板引导位置和退避位置之间使导板31移动的导板移动装置50。导板移动装置50具备液压缸51、液压进排通道52a、52b、电磁阀53、连接部件54。液压缸51以该液压缸51的活塞杆51a的顶端部与左右一对辊11a、11b正下方的薄板2对置的方式而被配置，并且，以活 塞杆51a横向(例如，水平方向)进退的方式而被配置。活塞杆51a的顶端部被固定在连接部件54的一方端部侧。连接部件54的另一方端部侧被固定在枢轴32上。所述薄板引导位置是指与薄板2的引导相关的位置，所述退避位置是指与引导无关的位置。
在液压缸51的顶端部侧以及基端部侧，分别连接有液压进排通道52a、52b的一方的端部侧。在液压进排通道52a、52b的另一方的端部侧，设置有电磁阀53。电磁阀53与液压供给源(未图示)连接。通过由电磁阀53对向液压缸51的液压的进排量进行调节，从而对活塞杆51a的进退量进行调节。当活塞杆51a进退时，经由连接部件54以及枢轴32而传递至导板31，导板31的顶端部31a在与第二根～第四根的导板辊35b～d相同高度的薄板引导位置、和从左右一对辊11a、11b与多个导板辊35a～d之间的薄板2的通带路径分离的退避位置之间回转。
薄板连续铸造装置100还具备导板辊升降装置60，导板辊升降装置60使以可旋转的方式对在导板辊组35中被配置在薄板2的通带方向上游侧的第一根导板辊35a进行支承的支承部42、43升降。导板辊升降装置60具备液压缸61、液压进排通道62a、62b、电磁阀63。液压缸61以该液压缸61的活塞杆61a的顶端部朝向上方配置并且活塞杆61a在上下方向(例如，铅直方向)上进退的方式而被配置。活塞杆61a经由支承部42、43以及轴承48、49而以导板辊35a可旋转的方式进行支承。并且，导板辊升降装置60被设置在导板辊35a的两端，两侧升降装置同步进行动作。
在液压缸61的顶端部侧以及基端部侧，分别连接有液压进排通道62a、62b的一方的端部侧。在液压进排通道62a、62b的另一方的端部侧，设置有电磁阀63。电磁阀63与液压供给源(未图示)连接。通过由电磁阀63对向液压缸61的液压的进排量进行调节，从而对活塞杆61a的进退量进行调节。当活塞杆61a进退时，经由支承部42、43、轴承48、49以及轴部35aa、35ab而传递至第一根导板辊35a，在与第二根～第四根的导板辊35b～d相同高度的上升位置、和在与第二根～第四根的导板辊35b～d相比靠下方且能够使活套控制通带时，使薄板2的弯曲减小的下降位置之间，第一根导板辊35a进行升降。而且，如后文详细所述，导板辊升降装置60以如下方式而被控制，即，在初期通带时将第一根导板辊35a定位于所述上升位置，而在活套控制通带时，将第一根导板辊35a定位于所述下降位置。
也可以与第一根导板辊35a分开，设置用于第二根导板辊35b的轴部的开 口部，并且分别设置支承部、密封板。但是，如上述的实施方式的那样，仅在第一根导板辊35a上设置的情况在易于维持密闭性和设备的可靠性上较为优秀。作为其他的实施方式，在同样的开口部上，不仅贯穿第一根导板辊35a的轴部，也可以贯穿第二根导板辊35b和第三根导板辊35c等多根导板辊的轴部。在该情况下，在所贯穿的多个轴部以完全相同的方式而进行上下移动的情况下，能够兼用支承部和密封板和升降单元。在所贯穿的多个轴部以互相不同的方式而进行上下移动的情况下，分别需要支承部等。在该情况下，需要适当地设置相邻的密封板之间的密封件。
因此，根据本实施方式，通过具备使第一根导板辊35a升降的导板辊升降装置60，从而能够对应于从一对辊11a、11b引出的薄板2的通带状态(初期通带时以及活套控制通带时)，而使第一根导板辊35a升降。由此，在初期通带时，能够将第一根导板辊35a定位在与第二根以后的导板辊35b～d相同高度的所述上升位置上，而在活套控制通带时，能够将第一根导板辊35a定位在与第二根以后的导板辊35b～d相比靠下方的高度的所述下降位置。其结果为，能够对薄板2的弯曲负荷进行抑制的同时，使薄板2顺利地通带。
而且，由于能够使第一根导板辊35a升降，因此，在无法使第一根导板辊35a升降时，无需设置将薄板引导至与该第一根导板辊相同高度为止的多余的导板辊，而能够在该量上缩短装置的长度。另外，由于能够缩短导板31，因此，能够迅速地使该导板31移动。由此，在薄板2的初期通带时，能够顺利地进行通带。由于无需设置多余的导板辊，因此，能够在该量上减少维护检修的费用以及时间。而且，能够加深活套，并易于进行线性速度控制(活套控制)。
在为了防止薄板2表面的氧化而使铸造室20内充满惰性气体的情况下，由于能够缩短装置的长度，因此，能够减少铸造室20内的体积。即，能够实现所述薄板连续铸造装置100的小型化。
在初期通带时，以将第一根导板辊35a定位在与其他导板辊35b～d相同高度的所述上升位置上的方式对导板辊升降装置60进行控制，在活套控制通带时，通过具备以将第一根导板辊35a定位在与其他导板辊35b～d相比靠下方的高度、且定位在能够减小相对于薄板2的弯曲的所述下降位置上的方式对导板辊升降装置60进行控制的控制装置90，从而能够对应于薄板2的通带状态而将第一根导板辊35a定位在所述上升位置或者所述下降位置上。另外，在初期通带时，由于导板31的顶端部31a被定位在与定位于所述上升位置上的第一根导板辊35a邻接的地方，因此，能够将由导板31引导的薄板2经由第 一根导板辊35a而顺利地向第二根以后的导板辊35b～d。而且，由于在通过第一根～第四根的导板辊35a～d而对薄板2进行支承的同时，能够向活套控制通带转移，因此，能够减轻向薄板2的负荷。
通过具备对第一根导板辊35a进行旋转驱动的驱动电机38，从而能够将被引导至第一根导板辊35a的薄板2顺利地向第二根以后的导板辊35b～d通带。
[第二实施方式]
参照图3，对本发明的第二实施方式所涉及的薄板连续铸造装置进行说明。
本实施方式采用的是对图1所示的上述的第一实施方式的薄板连续铸造装置所具备的导板进行变更的结构。其他结构与图1所示的上述的装置大致相同，对相同的设备标记相同的符号，并适当地省略重复的说明。
如图3所示，本实施方式所涉及的薄板连续铸造装置100A具备被配置在左右一对辊11a、11b的下方的导板31A。导板31A具备在左右一对辊11a、11b侧以及导板辊35a～d侧被分成两个的上导板主体(第一导板主体)31A1以及下导板主体(第二导板主体)31A2。薄板连续铸造装置100A具备在薄板引导位置和退避位置之间使上导板主体31A1以及下导板主体31A2移动的上导板主体移动装置50以及下导板主体移动装置70，并且，具备使下导板主体31A2升降的下导板主体升降装置80。所述薄板引导位置是指与薄板2的引导相关的位置。所述退避位置是指与薄板2的引导无关的位置。
上导板主体31A1以接近于左右一对辊11a、11b的方式配置。在上导板主体31A1的基端部(上端部)侧，设置有枢轴32。在枢轴32上，与上述的第一实施方式所涉及的薄板连续铸造装置100所具备的导板31相同，固定有连接部件54的另一方的端部侧。在连接部件54的一方的端部侧，固定有液压缸51的活塞杆51a的顶端部。即，上导板主体31A1与上述的薄板连续铸造装置100相同，通过导板(上导板主体)移动装置50，从而在与下导板主体31A2协同地将薄板2引导至导板辊35a～d的薄板引导位置、与从于左右一对辊11a、11b和多个导板辊35a～d之间的薄板2的通带路径分离的退避位置之间，使上导板主体31A1的顶端部31A1a侧回转。
下导板主体31A2以接近于第一根导板辊35a的方式配置。下导板主体31A2通过以顶端部(左端部)31A2a侧回转自如的方式设置于基端部(右端部)31A2b侧的枢轴(轴体)34而被支承。
下导板主体移动装置70具备液压缸71、液压进排通道72a、72b、电磁阀73、连接部件74。液压缸71以该液压缸71的活塞杆71a的顶端部朝向上方的 方式配置，并且，以活塞杆71a在上下方向(例如，铅直方向)进退的方式配置。活塞杆71a的顶端部被固定在连接部件74的一方的端部侧。连接部件74的另一方的端部侧被固定在枢轴34上。
在液压缸71的顶端部侧以及基端部侧，分别连接有液压进排通道72a、72b的一方的端部侧。在液压进排通道72a、72b的另一方的端部侧，设置有电磁阀73。电磁阀73与液压供给源(未图示)连接。通过由电磁阀73来对向液压缸71的液压的进排量进行调节，从而对活塞杆71a的进退量进行调节。当活塞杆71a进退时，经由连接部件74以及枢轴34而传递至下导板主体31A2，在与上导板主体31A1协同地将薄板2引导至导板辊35a～d的薄板引导位置、与从于左右一对辊11a、11b和多个导板辊35a～d之间的薄板2的通带路径分离的退避位置之间，下导板主体31A2的顶端部31A2a回转。
下导板主体升降装置80与导板辊升降装置60相同，具备液压缸81、液压进排通道82a、82b、电磁阀83。液压缸81以该液压缸81的活塞杆81a的顶端部朝向上方的方式配置，并且，以活塞杆81a在上下方向(例如，铅直方向)上进退的方式配置。活塞杆81a以可旋转的方式对下导板主体31A2进行支承。并且，下导板主体升降装置80被设置在下导板主体31A2的两端，这些装置同步进行动作。
在液压缸81的顶端部侧以及基端部侧，分别连接有液压进排通道82a、82b的一方的端部侧。在液压进排通道82a、82b的另一方的端部侧，设置有电磁阀83。电磁阀83与液压供给源(未图示)连接。通过由电磁阀83来对向液压缸81的液压的进排量进行调节，从而对活塞杆81a的进退量进行调节。当活塞杆81a进退时，传递至下导板主体31A2，在与第二根～第四根的导板辊35b～d相同高度的上升位置、和与第二根～第四根的导板辊35b～d相比靠下方的高度的下降位置之间，下导板主体31A2进行升降。而且，如后文详细所述，下导板主体升降装置80以如下的方式进行控制，即，在初期通带时，将下导板主体31A2定位在所述上升位置上，并且，在活套控制通带时，将下导板主体31A2定位在所述下降位置上。
薄板连续铸造装置100A具备对应于薄板2的通带状态(初期通带状态以及活套控制通带状态)而对电磁阀53、63、73、83等进行控制的控制装置90A。即，控制装置90A在薄板2的初期通带时，以将上导板主体31A1以及下导板主体31A2定位在所述薄板引导位置上而将第一根导板辊35a定位在所述上升位置上的方式对电磁阀53、63、73、83等进行控制。另外，控制装置90A在 薄板2的活套控制通带时以将上导板主体31A1定位在所述退避位置上而将第一根导板辊35a定位在所述下降位置上而且将下导板主体31A2定位在所述退避位置以及所述下降位置上的方式对电磁阀53、63、73、83等进行控制。
因此，根据本实施方式，导板31A具有在左右一对辊11a、11b侧以及导板辊35a～d侧被分成两个的上导板主体31A1以及下导板主体31A2，上导板主体31A1以及下导板主体31A2分别具有以能够回转的方式对该上导板主体31A1以及该下导板主体31A2进行支承的枢轴32、34，通过具备使下导板主体31A2升降的下导板主体升降装置80，与上述的第一实施方式所涉及的薄板连续铸造装置100相同，对应于从一对辊11a、11b引出的薄板2的通带状态(初期通带时以及活套控制通带时)而使上导板主体31A1以及下导板主体31A2移动，并能够使第一根导板辊35a升降。即，在初期通带时，能够将上导板主体31A1定位在所述薄板引导位置上，而将第一根导板辊35a定位在与第二根以后的导板辊35b～d相同高度的所述上升位置上，而且，将下导板主体31A2定位在所述薄板引导位置以及所述上升位置上。另一方面，在活套控制通带时，能够将上导板主体31A1定位在所述退避位置上，而将第一根导板辊35a定位在与第二根及以后的导板辊35b～d相比靠下方的高度的所述下降位置上，而且，将下导板主体31A2定位在所述退避位置以及所述下降位置上。其结果为，能够在对相对于薄板2的弯曲负荷进行抑制的同时，顺利地使薄板2进行通带。
而且，导板31A被分成两个的上导板主体31A1以及下导板主体31A2，与一个导板31的情况相比，能够减小各导板主体31A1、31A2的质量，从而能顺利地使上导板主体31A1和下导板主体31A2迅速地移动。由此，在初期通带时，能够顺利地进行通带。
[其他实施方式]
在上述内容中，对具备使第一根导板辊35a升降的导板辊升降装置60的薄板连续铸造装置100、100A进行说明，但也能够设为具备使第二根以后的导板辊35b～d升降的其他(第二)导板辊升降装置的薄板连续铸造装置。在这样的薄板连续铸造装置中，在实现与上述的薄板连续铸造装置100、100A相同的作用效果之外，还能够在左右一对辊11a、11b与多个导板辊35a～d之间将以环状下垂的活套形成曲率较大的形状，并能够在该量上降低向薄板2的负荷。
在上述内容中，对具备第一根～第四根的导板辊35a～d的导板辊组35的薄板连续铸造装置100、100A进行了说明，但不局限于四根的导板辊，也能够设为具备由三根以下的导板辊或五根以上的导板辊构成的导板辊组的薄板连 续铸造装置。即使是这样的薄板连续铸造装置，也将实现与上述的薄板连续铸造装置100、100A相同的作用效果。
在上述内容中，对具备对第一根导板辊35a进行旋转驱动的驱动电机38的薄板连续铸造装置100、100A进行说明，但也能够设为对第二根以后的导板辊35b～d进行旋转驱动的驱动电机的薄板连续铸造装置。即使是这样的薄板连续铸造装置，也将实现与上述的薄板连续铸造装置100、100A相同的作用效果。
即，根据这些方式，由于能够通过导板辊升降装置60使第一导板辊35a(的轴部35aa、35ab)上下移动，并且导板辊升降装置60设置在侧壁部23、24的铸造室外侧处，因此能够阻碍来自通带壁部内的高温的薄板2的辐射热的影响，防止导板辊升降装置60的高温变差，从而能够维持升降动作的可靠性。此外，初期通带时，在初期通带时，在导板31位于将薄板2引导至导板辊35位置的状态下，使第一导板辊35a位于与其他的导板辊35b、35c、35d相同的高度位置，从而能够易于将薄板2从导板31向导板辊组35进行输送。紧接着在所实施的活套控制通带时，通过使第一导板辊35a升降，从而在导板31支承薄板2并向第一导板辊35a引导之后，在导板31位于不支承薄板2的位置的状态下，使第一导板辊35a位于与其他的导板辊35b、35c、35d相比靠下的位置，并且通过接收薄板2，从而能够在向导板辊组35转移的地方，使薄板2成为自然的弯曲状态，难以产生薄板2的断带。
此外，由于不仅在壁部23、24上具有第一导板辊35a的轴部35aa、35ab的上下移动所需要的开口部23a、24a，并且即使支承部42、43上下移动，密封板27、28也能够覆盖开口部23a、24a，因此能够抑制来自开口部23a、24a的空气(氧气)的流入，从而防止薄板2的氧化。
此外，由于填充有密封件44、45、46、47，因此能够容许轴部35aa、35ab的旋转和轴部35aa、35ab的上下移动并且阻碍空气流入铸造室20，此外能够阻碍热量与气流一起传递至铸造室20外。
此外，由于配置于最上游侧处的第一导板辊35a进行自转，因此能够顺利输送薄板2，并且，由于万向节传动轴39和驱动电机38没有暴露于高温下，因此能够防止这些装置的性能变差，从而能够维持装置的可靠性。
此外，在并不使多个导板辊35b、35c、35d上下移动，而仅使第一导板辊35a上下移动的情况下，维持密闭性变得容易，并且，易于确保设备的可靠性。
此外，即使在使第一导板辊35a位于下降位置的情况下，通过使下导板本 体31A2位于更下降的位置，从而能够使下导板31A2位于不引导薄板2的退避位置。
工业上的可利用性
根据本发明，由于不依赖于从一对辊引出的薄板的通带状态(初期通带时以及活套控制通带时)而在对相对于薄板的负荷进行抑制的同时，能够顺利地对薄板进行通带，因此，能够在制铁工业等中进行有益的利用。
符号说明
1   熔融金属；
2   薄板(铸带)；
11a、11b 辊(铸造辊)；
20  铸造室；
23a、24a 开口部；
27、28 密封板；
27aa、28aa 密封板的孔；
31  导板；
31A 导板；
31A1 上导板主体；
31A2 下导板主体；
32、34  枢轴(轴体)；
35  导板辊组；
35a  第一导板辊；
35aa、35ab 轴部；
37a、37b 夹送辊；
38    驱动电机(驱动单元)；
39 万向节传动轴；
40 入口；
41 出口；
42、43 支承部；
44、45、46、47 密封件；
50  导板移动装置(导板移动单元、上导板主体移动单元)；
51   液压缸；
51a   活塞杆；
52a、52b 液压进排通道；
53   电磁阀；
54   连接部件；
60  导板辊升降装置(升降单元)；
61   液压缸；
61a   活塞杆；
62a、62b 液压进排通道；
63   电磁阀；
70   下导板主体移动装置(下导板主体移动单元)；
71   液压缸；
71a   活塞杆；
72a、72b 液压进排通道；
73   电磁阀；
74   连接部件；
80   下导板主体升降装置(下导板主体升降单元)；
81   液压缸；
81a   活塞杆；
82a、82b 液压进排通道；
83   电磁阀；
90   控制装置(控制单元)；
90A  控制装置(控制单元、下导板主体升降控制单元)；
100、100A 薄板连续铸造装置。

Claims (6)

  1. 一种薄板连续铸造装置，具备：
    一对辊，其进行旋转而从下方引出薄板；
    导板，其具有将所引出的薄板向横向引导的弧状的截面；
    多个导板辊，其将被向横向引导的薄板置载并进行旋转而向横向通带；
    导板移动单元，其使所述导板在与薄板的引导相关的位置、与引导无关的退避位置之间移动；
    铸造室，其具有入口和出口，并由形成将所述导板、所述导板辊包括在内部的空间的壁部构成，所述入口在所述一对辊的下方使薄板输入，所述出口使向横向通带的薄板输出，
    所述薄板连续铸造装置的特征在于，具备：
    开口部，其被设置在所述壁部的侧面上，并且被所述导板辊中的所述薄板的通带方向的最上游侧的第一导板辊的轴部进行贯穿；
    支承部，其以可旋转的方式对所述轴部进行支承；
    升降单元，其被设置在所述铸造室的外侧处，并使所述支承部升降。
  2. 如权利要求1所述的薄板连续铸造装置，其特征在于，
    所述支承部具有密封板，即使所述支承部被所述升降单元上下移动，所述密封板也能够覆盖所述开口部。
  3. 如权利要求2所述的薄板连续铸造装置，其特征在于，
    在所述密封板与所述轴部之间、以及所述密封板与所述壁部的侧面之间分别介入有密封件。
  4. 如权利要求1至3中的任何一项所述的薄板连续铸造装置，其特征在于，具备：
    驱动单元，其用于使所述第一导板辊旋转；
    万向节传动轴，其一端与所述第一导板辊的一方的轴部的端部连接，另一端与所述驱动单元连接。
  5. 如权利要求2或3所述的薄板连续铸造装置，其特征在于，
    仅与多个所述导板辊中的所述第一导板辊相对应，具备有所述升降单元、所述开口部以及所述密封板。
  6. 如权利要求1至5中的任意一项所述的薄板连续铸造装置，其特征在于，
    所述导板具有在所述左右一对辊侧以及所述导板辊侧被分成两个的上导板主体以及下导板主体，
    所述上导板主体以及所述下导板主体分别具有以能够回转的方式对该上导板主体以及该下导板主体进行支承的轴体，
    所述薄板连续铸造装置具有下导板主体升降单元，所述下导板主体升降单元使所述下导板主体升降。
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