JP5608037B2 - Twin roll type continuous casting machine - Google Patents

Description

  The present invention relates to a twin-roll type continuous casting apparatus that can adjust the roll shape by changing the temperature of a casting roll during a casting operation with a simple configuration.

  The twin roll type continuous casting apparatus is manufactured by continuously drawing a thin plate slab obtained by cooling and solidifying a molten metal in a hot water pool portion formed between a pair of casting rolls (cooling rolls) from a gap between the casting rolls. For example, since the molten metal at 1600 ° C. comes into contact with the casting roll, cooling water is passed through the inside of the casting roll so that the temperature of the surface of the roll in contact with the molten metal is adjusted to about 400 ° C. or less. Protect.

  The casting roll has a problem that the shape changes in the axial direction and the radial direction depending on the temperature. In particular, the change in the shape in the radial direction appears as a slab thickness profile in the manufactured thin plate slab. For this reason, conventionally, for example, in order to predict the deformation amount of the casting roll during operation in the hot state and take into account the predicted deformation amount, a desired slab thickness profile can be obtained in advance in the cold. In this way, a flat roll sheet slab or a thin sheet slab having a slight crown is produced.

  However, since the casting roll has a structure in which a step portion is formed between the roll body portion and the shaft portion, the axial intermediate portion and the axial end portion of the casting roll are cooled to a uniform temperature. It is difficult to do so, and the end of the casting roll in the axial direction is complicated and has a large amount of deformation due to the change in shape in the axial direction and the radial direction. There is a problem that the plate thickness tends to be unstable and deviated from a desired slab thickness profile at the width end portion.

  Thus, when the plate | board thickness of the width | variety edge part of a thin plate slab becomes unstable, in addition to becoming a fault on quality itself, it may lead to the malfunction in the rolling process implemented after casting. That is, it causes malfunction of the pinch roll for suppressing the meandering of the plate from side to side during rolling, or causes wrinkles and cracks in the rolled plate.

  In addition, in the conventional twin roll type continuous casting apparatus, it is considered that the plate shape changes for some reason during the operation, but when the plate shape changes, the normal twin roll type continuous casting apparatus casts. Since the shape of the roll cannot be changed, it is conceivable to deal with it by changing operating conditions such as changing the casting speed or the amount of molten metal. However, in most cases, even if the casting speed or the amount of molten metal is changed, it is not possible to cope with changes in the plate shape, and the casting speed and the amount of molten metal also bear other control factors (for example, plate thickness control etc. Therefore, these cannot be changed easily.

  On the other hand, since the heat deformation shape of the casting roll of the twin roll type continuous casting apparatus is determined by the temperature of the casting roll, the shape of the casting roll is adjusted by changing the temperature of the casting roll by an external action. There is what I did. For example, using a roll shape measuring instrument or a slab shape measuring instrument, the roll crown amount or slab crown amount is detected, and the output of the roll heating / cooling device is adjusted based on the detection result, and the surface of the casting roll is adjusted. There is one that is heated or cooled (see Patent Document 1, etc.).

  Furthermore, the hot water reservoir formed between the pair of water-cooled structure rolls is sealed with an inert gas in which one or more kinds are mixed, and one or both of the supply temperature of the sealing gas and the mixing ratio of the gas are adjusted. Thus, there is one that controls the slab crown and plate thickness during casting by changing the heat flux from the molten metal to the casting roll (see, for example, Patent Document 2).

  Also, the shape of the casting roll can be changed by fluid pressure. The cylindrical fuselage sleeve that forms the shaft part of the cooling roll has a watertight structure, and a pressure tube is connected to the fuselage sleeve through the roll main shaft. Then, a copper sleeve with a built-in cooling pipe is fitted on the outer periphery of the water-tight fuselage sleeve, and a reverse crown with a concave central portion of the cooling roll is provided in advance to bulge the fuselage sleeve by hydraulic pressure. Some have a degenerate structure (see Patent Document 3).

Japanese Patent Application Laid-Open No. 07-088599 JP 07-276004 A Japanese Patent Application Laid-Open No. 07-256401

  Conventionally, in finish rolling rolls for hot rolling and the like, a method of controlling the temperature and the amount of deformation by directly injecting cooling water from the outside to the rolling roll has been taken. In the continuous casting machine, when cooling water is injected onto the casting roll and cooled, for example, there is a possibility that a steam explosion may occur due to contact between molten steel at 1600 ° C. and water. It is difficult to adopt a cooling method. Also, in the method of cooling by injecting cooling water onto the outer peripheral surface of the casting roll, the cooling is not stable, and thus it is difficult to establish reproducibility between the injection of cooling water and the deformation of the casting roll. There is.

  Moreover, the said patent document 2 uses the sealing gas which adjusted one or both of the supply temperature of gas, and the mixing ratio of gas, and changes the heat flux from the molten metal of a hot water pool part to a casting roll during casting. Although the slab crown and plate thickness are controlled, in order to change the shape of the casting roll using a gas with low thermal conductivity, it is necessary to supply a large amount of sealing gas by adjusting the temperature. Therefore, there is a problem that the apparatus becomes very large, and further, there is a problem that it is difficult to establish reproducibility between the supply of the seal gas and the deformation of the casting roll.

  In Patent Document 3, the hydraulic pressure supplied to the casting roll is adjusted so that the expansion amount (reverse crown amount) of the cooling roll is optimized. In this way, the crown control is performed by the hydraulic pressure. Has a problem that a high-pressure and large-sized hydraulic device is required, and the device becomes large. Further, since the shape of the casting roll is controlled by the hydraulic pressure, there is a problem that the shape of the casting roll is greatly changed when the hydraulic pressure is lowered for some reason.

  As described above, in the conventional twin roll type continuous casting apparatus, it is difficult to arbitrarily adjust the temperature of the casting roll during the casting operation, and to keep it stably at the adjusted temperature. It was difficult to adjust the shape of the thin plate slab during the casting operation.

  The present invention has been made in view of the above-described problems, and provides a twin-roll continuous casting apparatus that can adjust the roll shape by changing the temperature of the casting roll during the casting operation with a simple configuration. It is something to try.

According to the present invention, the casting roll, which is manufactured by forming a puddle portion between a pair of casting rolls and drawing out a thin plate slab from between the casting rolls, is constituted by a sleeve having a plurality of cooling channels in the circumferential direction. A twin-roll continuous casting device comprising a cooling device for cooling the casting roll by supplying a cooling fluid to the cooling flow path,
A plurality of temperature control channels are formed in the circumferential direction at a position radially inward of the sleeve with respect to the cooling channel provided in the sleeve, and an outlet port at one end of the temperature control channel is formed from an inlet port at the other end A temperature control medium supply device for supplying a temperature control medium whose temperature is adjusted toward
A large amount of deformation of the casting roll is enabled by supplying a temperature control medium temperature-controlled from the temperature control medium supply device to the temperature control flow path, and the temperature of the temperature control medium supplied to the temperature control flow path and the temperature The present invention relates to a twin-roll type continuous casting apparatus characterized by adjusting the shape of the casting roll according to the shape of the thin plate slab during the casting operation from the relationship with the shape of the casting roll .

  In the twin-roll continuous casting apparatus, it is preferable that the temperature control medium supply device has a temperature controller for adjusting the temperature of the temperature control medium.

  In the twin-roll continuous casting apparatus, the temperature controller is preferably a cold water tower.

  Further, in the twin roll type continuous casting apparatus, the temperature detected from the thermometer for detecting the temperature of the temperature control medium derived from the temperature control flow path and the shape from the shape detection apparatus for detecting the shape of the thin plate slab. It is preferable to have a controller that inputs the detection value and the target shape value of the thin plate cast to adjust the temperature of the temperature controller.

In the twin-roll type continuous casting apparatus, the temperature control medium supply device is cooled by the temperature control medium heated by the temperature control flow path and led from the outlet to the cooling device to be cooled. A first circulation channel configured to guide the medium to the inlet of the temperature control channel;
A second circulation channel for directly leading the temperature rising fluid taken out from the outlet to the inlet;
It is preferable to have flow rate adjusting means for adjusting the temperature of the casting roll by adjusting the flow rate distribution of the fluid flowing through the first circulation channel and the second circulation channel.

  In the twin-roll type continuous casting apparatus, the cooling device is preferably a cold water tower.

  Further, in the twin roll type continuous casting apparatus, the temperature detected from the thermometer for detecting the temperature of the temperature control medium derived from the temperature control flow path and the shape from the shape detection apparatus for detecting the shape of the thin plate slab. It is preferable to have a controller that inputs the detected value and the target shape value of the thin plate slab and adjusts the temperature of the temperature adjusting medium supplied to the temperature adjusting flow path by the flow rate adjusting means.

  According to the twin-roll type continuous casting apparatus of the present invention, the casting roll is constituted by a sleeve having a plurality of cooling channels in the circumferential direction, and a cooling fluid is supplied to the cooling channel to cool the casting roll. A plurality of temperature control channels are formed in the circumferential direction at a radially inner position of the cooling channel provided in the sleeve, from one inlet of the temperature control channel to the outlet of the other A temperature control medium supply device for supplying a temperature control medium is provided, and the temperature control medium is supplied to the temperature control flow path, thereby enabling a large amount of deformation of the casting roll. From the relationship between the temperature of the temperature control medium supplied to the temperature control flow path and the shape of the casting roll, the casting roll can be adjusted by adjusting the shape of the casting roll according to the shape of the thin sheet slab during the casting operation. As a mold Shape quality of the thin plate cast piece to be made, an excellent effect can be improved yield.

It is a block diagram which shows the outline of one Example of the twin roll type continuous casting apparatus of this invention. It is a cut side view of the twin roll type continuous casting apparatus to which the present invention is applied. It is a cutting front view which shows an example of the structure of the casting roll with which the twin roll type continuous casting apparatus of this invention is equipped. It is a cutting front view which shows the other example of the structure of the casting roll with which the twin roll type continuous casting apparatus of this invention is equipped. (A) is a diagram which shows an example of the shape detection value of plate | board thickness, (b) is a diagram which shows an example of the target shape value of plate | board thickness. It is a diagram which shows the deformation amount of the casting roll cooled by the cooling flow path. It is a diagram which shows the deformation amount of the casting roll cooled by the temperature control flow path. It is a diagram which shows the deformation amount of the casting roll when changing the internal diameter of a sleeve. It is a block diagram which shows the outline of the other Example of the twin roll type continuous casting apparatus of this invention. It is a flowchart which shows an example of the shape control by the Example of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 2 is a cut side view of a twin-roll type continuous casting apparatus to which the present invention is applied. The twin-roll type continuous casting apparatus 1 is disposed between a pair of casting rolls 2 and 2 that are disposed in close proximity to each other and rotate in the direction of an arrow. The molten metal in the pool 3 is continuously drawn out from the gap between the casting rolls 2 and 2 while being cooled and solidified by the casting rolls 2 and 2. Has been manufactured.

  FIG. 3 is a cut front view showing an example of the structure of the casting roll 2 provided in the twin-roll type continuous casting apparatus 1, and has large diameters of the shafts 5 and 6 that are arranged to face each other with a gap on the same axis. The sleeve 7 is fitted between the end portions 5 ′ and 6 ′. Therefore, step portions 7 a and 7 b are formed at both ends of the sleeve 7. 2 and 3, the sleeve 7 is provided with a plurality of cooling channels 8 extending in the axial direction at equal intervals in the circumferential direction.

  A plurality of temperature control channels 9 having equal intervals in the circumferential direction are formed at positions radially inward of the sleeve 7 where the cooling channels 8 are provided.

  One shaft 5 of the casting roll 2 shown in FIG. 3 is provided with shaft-side flow passages 10 and 11 communicating with the cooling flow passage 8 and the temperature control flow passage 9, and a rotary joint 12 is further provided. An inlet 13 and an outlet 14 communicating with the shaft-side flow paths 10 and 11 are provided. In addition, the other shaft 6 is provided with shaft-side flow passages 15 and 16 communicating with the cooling flow passage 8 and the temperature control flow passage 9. Further, the shaft-side flow is provided via a rotary joint 17. An outlet port 18 and an inlet port 19 communicating with the paths 15 and 16 are provided. In FIG. 3, reference numeral 20 denotes a carriage for supporting the casting roll 2 via a bearing 21 and traveling in the axial direction to replace the casting roll 2.

  FIG. 1 is a block diagram showing an outline of an embodiment of a twin-roll type continuous casting apparatus of the present invention, and cooling the casting roll 2 by supplying a cooling fluid 22 from the inlet 13 to the cooling flow path 8. The cooling fluid 22 heated by the cooling of the casting roll 2 is taken out from the outlet 18 by the pump 23, supplied to the cooling device 25 including the chilled water tower 24, cooled, and then introduced again into the inlet 13. It has come to be. Therefore, for example, the casting roll 2 is protected by being cooled by the cooling fluid 22 from the cold water tower 24 so that the surface temperature of the casting roll 2 in contact with the molten metal at about 1600 ° C. is about 400 ° C. or less. Yes.

  On the other hand, the temperature adjustment medium 26 is supplied from the inlet 19 of the casting roll 2 to the temperature adjustment channel 9 to adjust the temperature inside the sleeve 7. The medium 26 is taken out from the outlet 14 by the pump 27 and supplied to the temperature controller 28 to adjust the temperature, and then the temperature is adjusted to a temperature adjusting medium supply device 29 that is guided to the inlet 19 again. Yes.

  In FIG. 1, reference numeral 30 denotes a controller. The controller 30 receives a detected temperature 32 from a thermometer 31 that detects the temperature of the temperature adjusting medium 26 led out from the outlet 14 of the casting roll 2. In addition, the shape detection value shown in FIG. 5A from the shape detection device 33 that detects (X-ray detection) the plate thickness and crown value of the thin plate slab 4 manufactured by the twin roll type continuous casting device 1. 34 (measured plate thickness profile 34a, measured crown value 34b) is input. In FIG. 5A, 34c is a real side approximate profile. Further, the controller 30 is inputted with target shape values 35 (target plate thickness profile 35a, target crown value 35b) shown in FIG.

  Based on the detected temperature 32 from the thermometer 31, the shape detection value 34 of the thin slab 4 from the shape detection device 33, and the target shape value 35, the controller 30. By adjusting the temperature of the temperature adjusting medium 26 supplied to the introduction port 19 by adjusting the shape, the shape of the casting rolls 2 and 2 is deformed to produce the thin plate slab 4 having the target crown value. Yes.

  In the embodiment of FIG. 3, the case where the cooling fluid 22 flowing through the cooling flow path 8 of the casting roll 2 and the temperature adjustment medium 26 flowing through the temperature adjustment flow path 9 are opposed to each other has been described. As shown in FIG. 1, the cooling fluid 22 and the temperature control medium 26 may flow in parallel in the same direction.

  Further, the casting roll 2 can have various configurations, and the configuration shown in FIG. 4 can also be used. In the casting roll 2 of FIG. 4, one shaft 5 is a double shaft of the outer shaft 5a and the inner shaft 5b, and the other shaft 6 is also a double shaft of the outer shaft 6a and the inner shaft 6b. Each shaft 5a, 5b, 6a, 6b is provided with a rotary joint 12, 12 ', 17, 17'. The cooling fluid 22 supplied from the inlet 13 of the rotary joint 12 to the partitioned part of the shaft-side channel 10 flows through every other cooling channel 8, and then the shaft-side channel 15 is partitioned. It passes through a part and is discharged from the outlet 18 of the rotary joint 17. In addition, the cooling fluid 22 ′ supplied from the inlet 13 ′ of the rotary joint 17 to the other partitioned part of the shaft-side channel 15 flows through the other cooling channel 8 ′ different from the above, The shaft-side flow path 10 is discharged from the outlet 18 ′ of the rotary joint 12 through the other partitioned part. Accordingly, the cooling fluid 22 flowing through the cooling flow path 8 and the cooling fluid 22 ′ flowing through the cooling flow path 8 ′ form an opposing flow.

  On the other hand, the temperature control medium 26 supplied from the inlet 19 of the rotary joint 17 ′ to the part of the section of the shaft-side channel 16 flows through the other temperature control channels 9, and then the shaft-side channel 11 is discharged from the outlet 14 of the rotary joint 12 ′ through a partitioned part. In addition, the temperature control medium 26 ′ supplied from the inlet 19 ′ of the rotary joint 12 ′ to the other partitioned part of the shaft-side channel 11 flows through every other temperature control channel 9 ′ different from the above. After that, it is discharged from the outlet 14 ′ of the rotary joint 17 ′ through the other part of the shaft side flow path 16 partitioned. Accordingly, the temperature control medium 26 flowing through the temperature control flow path 9 and the temperature control medium 26 ′ flowing through the temperature control flow path 9 ′ form an opposing flow. A temperature gradient in the longitudinal direction is not generated.

  Next, the operation of the above embodiment will be described.

  As shown in FIG. 6, the present inventors, from the roll edge of X when the temperature of the cooling fluid 22 supplied to the cooling flow path 8 of the casting roll 2 is 30 ° C. and Y when the temperature is 80 ° C. The test which calculates | requires the deformation amount to the radial direction of the casting roll 2 in the distance of was implemented. As a result, as shown in FIG. 6, in the vicinity of the roll edge of the casting roll 2, it was recognized that the diameter changed in a complicated manner according to the temperature.

  Further, as shown in FIG. 7, the present inventors set the temperature of the temperature adjusting medium 26 supplied to the temperature adjusting flow path 9 provided at a position radially inward of the cooling flow path 8 included in the casting roll 2 to 30. A test was carried out to determine the amount of deformation in the radial direction of the casting roll 2 at a distance from the roll edge when the temperature was set to ° C. and X ′ when the temperature was set to 80 ° C. As a result, when the casting roll 2 is cooled by the temperature control flow path 9 as shown in FIG. 7, the casting roll 2 is cooled as compared with the case where the casting roll 2 is cooled by the cooling flow path 8 as shown in FIG. When the temperature is low (30 ° C.), X ′ is larger in the amount of change, and the end diameter of the casting roll 2 is larger than Y ′ when the temperature is high (80 ° C.) (that is, the crown amount is increased). Turned out to be).

  Further, as shown in FIG. 8, the present inventors set the inner diameter of the sleeve 7 having the outer diameter of 500 mm and the temperature adjusting flow path 9 therein to 350 mm, 370 mm, and 390 mm, that is, the temperature adjustment. A test was performed to determine the amount of deformation in the radial direction of the casting roll 2 when the thickness between the flow path 9 and the inner surface of the sleeve 7 was changed. As a result, as shown in FIG. 8, when the inner diameter of the sleeve 7 is large and the wall thickness is small, the roll crown of the casting roll 2 is small, and when the sleeve 7 is small and the wall thickness is large, the casting roll 2 The roll crown was found to be large. Therefore, it was recognized that it is effective to increase the thickness when a large change amount of the casting roll 2 is required.

  Therefore, by forming the temperature adjusting flow path 9 in the vicinity of the inside of the sleeve 7 and maintaining a predetermined thickness with respect to the cooling flow path 8 located at the middle portion in the thickness direction of the sleeve 7, a large change is achieved. It has been found that the shape of the casting roll 2 can be effectively controlled by the amount.

  In order to manufacture the thin plate cast 4 by the twin roll type continuous casting apparatus 1 shown in FIG. 1, first, the outer peripheral surface of the casting roll 2 is processed at room temperature (for example, 30 ° C.). At this time, according to the shape required for the thin plate slab 4 to be manufactured, the outer peripheral surface of the casting roll 2 may be processed to have a required negative crown, for example.

  On the other hand, as shown in FIG. 7, a relationship between the temperature of the temperature control medium 26 supplied to the temperature control flow path 9 and the deformation amount of the casting roll 2 is obtained and inputted to the controller 30 in advance.

  In order to cast the thin plate slab 4 by the twin roll type continuous casting apparatus 1, the cooling fluid 22 cooled by the cold water tower 24 is circulated and supplied to the cooling flow path 8 to keep the casting roll 2 at a safe temperature.

  When casting of the thin plate slab 4 is started, the shape detection value 34 of the thin plate slab 4 from the shape detection device 33 that detects the shape of the thin plate slab 4, the detected temperature 32 from the thermometer 31, and the target shape The value 35 is input to the controller 30, and the controller 30 compares the target crown value 35b with the actually measured crown value 34b, and the temperature of the temperature adjusting medium 26 shown in FIG. Based on the relationship between the temperature of the flow path 9) and the amount of deformation of the casting roll 2, the temperature controller 28 controls the temperature of the temperature adjusting medium 26.

  As described above, the temperature of the temperature adjusting medium 26 supplied to the temperature adjusting flow path 9 having a great influence on the shape of the casting roll 2 is adjusted, so that the shape of the casting roll 2 is shown in FIG. From the relationship between the temperature of 2 and the deformation, the shape of the casting roll 2 can be controlled with good reproducibility.

  FIG. 9 is a block diagram showing an outline of another embodiment of the twin-roll type continuous casting apparatus of the present invention, in which the cooling fluid 22 led out from the outlet 18 of the cooling flow path 8 is cooled by a chilled water tower 24. The cooling fluid 22 is supplied to the apparatus 25 and cooled, and the cooled cooling fluid 22 is circulated and supplied from the inlet 13 to the cooling flow path 8 to cool the casting roll 2 to a safe temperature.

  Further, a part of the temperature control medium 26 led out from the outlet 14 of the temperature control flow path 9 by the pump 27 is led to the cooling device 25 including the cold water tower 24 by the first circulation flow path 36 to be cooled. The temperature control medium 26 cooled by the cold water tower 24 is guided to the inlet 19 of the temperature control flow path 9. The other part of the temperature control medium 26 from the pump 27 is led to the second circulation channel 37, and the temperature control medium 26 of the second circulation channel 37 is the cold water of the first circulation channel 36. By being mixed with the temperature control medium 26 that has been cooled in the tower 24, the temperature control medium 26 a that has been temperature-controlled is circulated to the inlet 19.

  Further, in the first circulation flow path 36 and the second circulation flow path 37, the flow rates of the high-temperature temperature adjustment medium 26 that flows through the first circulation flow path 36 and the temperature adjustment medium 26 that flows through the second circulation flow path 37. The flow rate adjusting valves 38 and 39 are arranged to adjust the distribution, and the opening degree of the flow rate adjusting valves 38 and 39 is controlled by a controller 30a having the same configuration as the controller 30. .

  Since the shape detection value 34 of the thin slab 4 from the shape detector 33, the detected temperature 32 from the thermometer 31, and the target shape value 35 are input to the controller 30a, the controller 30a Based on the shape detection value 34 and the target shape value 35, the relationship between the temperature of the temperature control medium 26 (temperature of the temperature control flow path 9) and the deformation amount of the casting roll 2 shown in FIG. Control according to the flowchart shown in FIG.

  That is, in FIG. 10, when the target crown value 35b is compared with the actually measured crown value 34b and the measured crown value 34b is larger than the target crown value 35b (YES), the flow rate adjusting valve 38 is opened and the flow rate adjusting valve is opened. By closing 39 or adjusting the opening degree, the temperature of the temperature adjustment medium 26 supplied to the temperature adjustment flow path 9 is lowered. Then, as shown in FIG. 7, the roll crown of the casting roll 2 decreases and increases, so that the plate crown of the thin plate cast 4 decreases.

  When the actually measured crown value 34b is smaller than the target crown value 35b, the flow rate adjusting valve 39 is opened, and the flow rate adjusting valve 38 is closed or the opening degree is adjusted, so that the temperature adjusting medium supplied to the temperature adjusting channel 9 is supplied. 26 temperature is raised. Thereby, as shown in FIG. 7, the roll crown of the casting roll 2 decreases, and thus the plate crown of the thin plate cast 4 increases.

  As described above, the control of changing the shape of the casting roll 2 is performed by supplying the temperature adjusting medium 26 to the temperature adjusting channel 9 provided at a position radially inward of the cooling channel 8 of the sleeve 7. Thus, the shape of the casting roll 2 can be controlled with a large amount of change with good reproducibility, and the shape quality and yield of the thin sheet cast piece 4 to be manufactured can be improved.

  The twin-roll continuous casting apparatus of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Twin roll type continuous casting apparatus 2 Casting roll 3 Hot water pool part 4 Thin plate cast piece 7 Sleeve 8 Cooling flow path 8 'Cooling flow path 9 Temperature control flow path 9' Temperature control flow path 13 Inlet 13 'Inlet 14 Outlet DESCRIPTION OF SYMBOLS 14 'Outlet 18 Outlet 18' Outlet 19 Inlet 19 'Inlet 22 Cooling fluid 22' Cooling fluid 24 Chilled water tower 25 Cooling device 26 Temperature control medium 26 'Temperature control medium 28 Temperature controller 29 Temperature control medium supply device DESCRIPTION OF SYMBOLS 30 Controller 30a Controller 31 Thermometer 32 Detection temperature 33 Shape detection apparatus 34 Shape detection value 35 Target shape value 36 1st circulation flow path 37 2nd circulation flow path 38,39 Flow control valve

Claims (7)

The casting roll, which is manufactured by forming a hot water reservoir between a pair of casting rolls and drawing a thin plate slab from between the casting rolls, is constituted by a sleeve having a plurality of cooling channels in the circumferential direction, and the cooling A twin-roll continuous casting device provided with a cooling device for cooling a casting roll by supplying a cooling fluid to a flow path,
A plurality of temperature control channels are formed in the circumferential direction at a position radially inward of the sleeve with respect to the cooling channel provided in the sleeve, and an outlet port at one end of the temperature control channel is formed from an inlet port at the other end A temperature control medium supply device for supplying a temperature control medium whose temperature is adjusted toward
A large amount of deformation of the casting roll is enabled by supplying a temperature control medium temperature-controlled from the temperature control medium supply device to the temperature control flow path, and the temperature of the temperature control medium supplied to the temperature control flow path and the temperature A twin-roll type continuous casting apparatus that adjusts the shape of the casting roll in accordance with the shape of the thin plate slab during the casting operation from the relationship with the shape of the casting roll .   The twin roll type continuous casting apparatus according to claim 1, wherein the temperature control medium supply device includes a temperature controller for adjusting a temperature of the temperature control medium.   The twin-roll continuous casting apparatus according to claim 2, wherein the temperature controller is a cold water tower.   The temperature detected from the thermometer for detecting the temperature of the temperature control medium derived from the temperature control channel, the shape detection value from the shape detection device for detecting the shape of the thin plate cast, and the target shape value of the thin plate cast The twin-roll continuous casting apparatus according to claim 2 or 3, further comprising a controller that adjusts the temperature of the temperature controller. The temperature control medium supply device is heated by the temperature control flow channel and led to the cooling device to cool the temperature control medium led from the outlet, and the cooled temperature control medium is used as the inlet of the temperature control channel. A first circulation channel adapted to guide;
A second circulation channel for directly leading the temperature rising fluid taken out from the outlet to the inlet;
2. The twin-roll type according to claim 1, further comprising a flow rate adjusting means for adjusting a temperature of the casting roll by adjusting a flow rate distribution of the fluid flowing through the first circulation channel and the second circulation channel. Continuous casting equipment.   6. The twin-roll continuous casting apparatus according to claim 5, wherein the cooling device is a cold water tower.   The temperature detected from the thermometer for detecting the temperature of the temperature control medium derived from the temperature control channel, the shape detection value from the shape detection device for detecting the shape of the thin plate cast, and the target shape value of the thin plate cast And a controller for adjusting the temperature of the temperature adjusting medium supplied to the temperature adjusting flow path by the flow rate adjusting means.

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