WO2012043148A1 - 熱延鋼帯の製造装置及び製造方法 - Google Patents
熱延鋼帯の製造装置及び製造方法 Download PDFInfo
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- WO2012043148A1 WO2012043148A1 PCT/JP2011/070108 JP2011070108W WO2012043148A1 WO 2012043148 A1 WO2012043148 A1 WO 2012043148A1 JP 2011070108 W JP2011070108 W JP 2011070108W WO 2012043148 A1 WO2012043148 A1 WO 2012043148A1
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- hot
- steel strip
- rolled steel
- roll
- tension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
- B21B37/76—Cooling control on the run-out table
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
- B21B39/08—Braking or tensioning arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/02—Tension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/006—Pinch roll sets
Definitions
- the present invention relates to a hot rolled steel strip manufacturing apparatus and manufacturing method, and more specifically, a hot rolled steel strip manufacturing apparatus and manufacturing method capable of obtaining a desired material by rapid cooling immediately after rolling and capable of producing a high yield. About.
- Patent Document 1 aims to obtain a high-yield hot rolling system and the like that can stably convey a rolled plate even if a cooling bank with high water pressure and high flow and strong cooling is used.
- a pinch roll is disposed closest to the outlet side of the cooling device, and the tension detecting means detects the tension of the rolled sheet based on the current value supplied to the drive motor of the pinch roll.
- Patent Document 2 discloses a weir (draining) in a cooling device provided on the exit side of a finishing rolling mill row for the purpose of increasing the cooling efficiency in the run-out table as much as possible and minimizing the time required for rolling.
- the weir roll is pressed against the steel sheet with a predetermined pressing force and a driving torque is applied so that the weir roll also serves as a pinch roll. This is thought to be because the tension is applied to the steel sheet as quickly as possible to quickly create a stable rolled state.
- the tension is converted from the output torque of the drive motor.
- the output torque of the drive motor includes the torque for acceleration / deceleration of the pinch roll and the rotational resistance of the bearing portion of the pinch roll.
- the torque is also included. Normally, the speed at the end of the hot-rolled steel strip is low, and after that, the speed is increased and the speed is reduced before the rear end comes out.
- This acceleration and deceleration is based on the moment of inertia of the machine around the pinch roll during rolling Torque fluctuation occurs. For this reason, it is necessary to control the tension to take a certain set value in consideration of this torque fluctuation, but it is difficult to match the actual tension acting on the hot-rolled steel strip to the target tension, and there is a difference.
- Patent Document 1 describes a measure for reducing the moment of inertia of the pinch roll.
- the torque change that reverses every acceleration / deceleration becomes a change in tension.
- the actual tension Since the actual tension cannot be accurately grasped, it can be said that it is difficult to stably maintain the set tension.
- rolling proceeds with the tension set by the pinch roll being different from the target tension and the actual tension. And if the actual tension becomes extremely small, the hot-rolled steel strip will not be able to flutter up and down uniformly in the cooling device, or it will come into contact with the upper and lower guide devices, causing wrinkles, or a plate will not be passed. . On the other hand, when the tension becomes an extremely large value, there arises a problem that the thickness of the hot-rolled steel strip becomes thin, which causes a variation in the thickness.
- Trd Trd is the torque for rotating the pinch roll
- Trt Tr-Trd
- the tension Ft can be calculated by pulling.
- Trd is necessary for controlling the rotation of the pinch roll itself, such as a change in the condition between the pinch roll and the plate, acceleration and deceleration, and has a large variation factor.
- Trd1 Torque that fluctuates due to acceleration / deceleration: The speed at the time of feeding is low, and after that, the speed is increased and the speed is reduced before the rear end is removed. Considering this, it is quite difficult to put the tension into a certain set value, and actual fluctuations in tension are unavoidable.
- Patent Document 1 describes a measure for reducing the moment of inertia of the pinch roll. However, it is difficult to controlly avoid that the torque change that reverses every acceleration / deceleration due to the moment of inertia becomes a change in tension, and it is difficult to stably maintain the set tension.
- Trd2 Change in rolling resistance of the pinch roll ...
- Trd3 When there is a change in plate thickness during rolling ...
- the pinch roll moves up and down and there is hysteresis in the mechanical system, the net pressing force (force for pressing the plate) changes. Therefore, the tension varies.
- I will consider a little about Tr. For example, there is a change in the friction coefficient ⁇ (vertical axis: traction coefficient, horizontal axis: ⁇ curve arranged by slip speed or slip ratio) while tension is applied by the pinch roll.
- ⁇ is the temperature of the hot-rolled steel strip and the surface condition (irregularity, dry or wet), and Since ⁇ is also affected by the friction of the pinch roll surface, it is considered difficult to grasp this ⁇ .
- Patent Document 2 Such a problem also occurs in Patent Document 2 in which the weir roll is used as a pinch roll, and the tension cannot be measured accurately.
- the hot-rolled steel strip in order to perform cooling properly, it is required to inject cooling water with tension applied from the tip of the hot-rolled steel strip. If tension is not applied, the hot-rolled steel strip becomes unstable in the vertical direction (both in the plate width direction and in the rolling direction) due to the cooling water jet, and there is a problem in that the cooling becomes uneven. In addition, the hot-rolled steel strip comes into contact with the upper and lower guide devices to cause wrinkles and obstructs threading. Therefore, it is required to apply tension to the tip of the hot-rolled steel strip as soon as possible.
- a plate shape measuring method is generally used in which the hot rolled steel strip is wound around the downcoiler and the external shape of the hot rolled steel strip is observed in the absence of tension before the tension is set.
- the cooling device is placed close to the exit side of the finish rolling mill, and the proximity pinch roll is placed on the exit side, the external shape is observed on the exit side of the proximity pinch roll, and the shape is observed. Based on the results, the shape will be corrected by the rolling mill, but the shape observation position is away from the finish rolling mill row, so that the portion that is produced without the defective shape portion being adjusted becomes longer, resulting in poor yield. .
- Patent Document 3 discloses a technique of disposing a shape detector in the vicinity of the exit side of the wiping device in the cooling device in the vicinity of the exit side of the rolling mill, but this relates to cold rolling. Since the technical field is different from that of hot rolling and there is no description of the pinch roll, it can be inferred that the tension is applied by a coiler, and the configuration is different from that of the present invention in which the tension is applied by the pinch roll.
- an object of the present invention is to provide a manufacturing apparatus and a manufacturing method of a hot-rolled steel strip that can obtain a desired material by rapid and uniform cooling immediately after rolling and can improve yield by early plate tension and plate shape measurement. It is in.
- a hot-rolled steel strip manufacturing apparatus comprises: A finish rolling mill row, a cooling device installed immediately after the exit side of the finishing rolling mill row, and a pinch roll installed on the exit side of the cooling device and contacting the upper and lower surfaces of the hot-rolled steel strip.
- a tension for disposing a draining roll positioned at least above the hot-rolled steel strip between the cooling device and the pinch roll, and measuring the tension of the hot-rolled steel strip between the draining roll and the pinch roll A measuring device is installed.
- the tension measuring device has a roll provided with an arbitrary winding angle on the hot-rolled steel strip, and measures the pressing force on the roll caused by the winding angle to obtain the tension acting on the hot-rolled steel strip.
- a finish rolling mill row a cooling device installed immediately after the exit side of the finishing rolling mill row, and a pinch roll installed on the exit side of the cooling device and contacting the upper and lower surfaces of the hot-rolled steel strip.
- a draining roll positioned at least above the hot-rolled steel strip is disposed between the cooling device and the pinch roll, and the plate shape of the hot-rolled steel strip is measured between the draining roll and the pinch roll. It is characterized by the installation of a shape meter.
- the shape meter has a plurality of rolls divided in the plate width direction of the hot-rolled steel strip by providing an arbitrary winding angle on the hot-rolled steel strip, and the pressing force applied to each roll caused by the winding angle in the plate width direction.
- the distribution is measured, the tension distribution is obtained from the pressing force distribution, and the plate shape is obtained from the tension distribution.
- the tension measuring device and the shape meter are the same device.
- the tension measuring device and / or the shape meter is characterized in that a winding angle exists at the upper part of the roll.
- the tension measuring device and / or shape meter when the tension of the hot-rolled steel strip between the finishing rolling mill row and the pinch roll is about to change, the winding angle varies and the variation in tension becomes as small as possible. It is characterized by doing so.
- the draining roll is a drive roll, and the rotation resistance of the draining roll itself to the hot-rolled steel strip is minimized.
- a finish rolling mill row a cooling device installed immediately after the exit side of the finishing rolling mill row, and a pinch roll installed on the exit side of the cooling device and contacting the upper and lower surfaces of the hot-rolled steel strip.
- a draining roll positioned at least above the hot-rolled steel strip is disposed between the cooling device and the pinch roll, and the plate shape of the hot-rolled steel strip is measured between the draining roll and the pinch roll.
- a shape meter was installed, and a hot-rolled steel strip temperature measurement device was installed to measure the temperature distribution in the plate width direction of the hot-rolled steel strip in the area including the air cooling zone installed from the draining roll to the pinch roll exit side.
- the hot rolled steel strip temperature measuring device is installed between a draining roll and a pinch roll.
- a method for producing a hot-rolled steel strip according to the present invention, A finish rolling mill row, a cooling device installed immediately after the exit side of the finishing rolling mill row, and a pinch roll installed on the exit side of the cooling device and contacting the upper and lower surfaces of the hot-rolled steel strip.
- a tension for disposing a draining roll positioned at least above the hot-rolled steel strip between the cooling device and the pinch roll, and measuring the tension of the hot-rolled steel strip between the draining roll and the pinch roll A measuring device and / or a shape meter for measuring the plate shape of the hot-rolled steel strip is installed, and the roll of the tension measuring device and / or the shape-meter is hot-rolled after the tip of the hot-rolled steel strip is caught in the pinch roll.
- the present invention is characterized in that the target wrap angle is arbitrarily determined for the steel strip.
- the roll of the tension measuring device and / or shape meter is set to a target winding angle arbitrarily determined for the hot-rolled steel strip after the tip of the hot-rolled steel strip has bitten into the pinch roll, and thereafter the winding angle Is rolled while being maintained at substantially the same value, so that the winding angle disappears before the rear end of the hot-rolled steel strip passes through the roll.
- a finish rolling mill row a cooling device installed immediately after the exit side of the finishing rolling mill row, and a pinch roll installed on the exit side of the cooling device and contacting the upper and lower surfaces of the hot-rolled steel strip.
- a draining roll positioned at least above the hot-rolled steel strip is disposed between the cooling device and the pinch roll, and the plate shape of the hot-rolled steel strip is measured between the draining roll and the pinch roll.
- a shape meter is installed, and the shape adjusting function of the rolling mill in at least the final stand of the finishing rolling mill row is operated while detecting the plate shape under cooling by the cooling device.
- An air-cooling zone is provided on the outlet side of the pinch roll, and a hot-rolled steel strip temperature measuring device is installed in the region including the air-cooling zone on the outlet side of the pinch roll from the draining roll to measure the temperature distribution in the plate width direction of the hot-rolled steel strip.
- the sheet shape obtained by the shape meter is corrected with a differential elongation distribution in the rolling direction based on the temperature distribution in the sheet width direction, and rolling at least in the final stand of the finish rolling mill row so that the corrected sheet shape becomes the target shape. It is characterized by operating the shape adjustment function of the machine.
- the cooling device installed immediately after the exit side of the finish rolling mill row enables rapid cooling immediately after rolling, for example, crystals of ferrite structure
- a hot-rolled steel strip having a fine grain structure with a grain size of 3 to 4 ⁇ m or less is obtained.
- a tension measuring device and / or a shape meter is installed between the draining roll and the pinch roll, uniform cooling is possible by early plate tension and plate shape measurement, minimizing cooling unevenness and stable rolling. The state is obtained and the yield can be improved.
- FIG. 1 shows the installation position of board tension
- FIG. 1 shows the board
- It is a principal part enlarged view of the hot rolling equipment which shows Example 2 of this invention.
- FIG. 1 is an overall configuration diagram of a hot rolling facility showing Embodiment 1 of the present invention
- FIG. 2 is an enlarged view of the main part of FIG. 1 showing the installation position of a plate tension and plate shape measuring device
- FIG. 1 is an enlarged view of the main part of FIG. 1 showing the winding angle of the shape measuring device
- FIGS. 4A and 4B are characteristic diagrams of shape control of the final stand of the finishing rolling mill row
- FIG. FIG. 5B is a relationship diagram based on Non-Patent Document 1.
- the hot rolling facility 10 includes a first cooling device 13 installed immediately after the exit side of the final stand 12 of the finish rolling mill row 11, and the exit side of the first cooling device 13. And a pinch roll 14 that contacts the upper and lower surfaces of the strip (hot-rolled steel strip) S, and a draining roll 15 is disposed between the first cooling device 13 and the pinch roll 14. Between the draining roll 15 and the pinch roll 14, a contact-type tension / shape measuring device 16 that measures the tension and shape of the strip S and a temperature measuring device (heat A steel strip temperature measuring device) 17 is installed.
- a second cooling device 19 is disposed on the exit side of the pinch roll 14 via an air cooling zone (measurement zone) 18, and the exit side of the second cooling device 19 is disposed on the exit side of the pinch roll 20 via a pre-coiler pinch roll 20.
- the downcoiler 21 is installed in two stages in the transport direction of the strip S.
- the air cooling zone (measurement zone) 18 generally, plate thickness measurement, plate profile (plate thickness width direction distribution) measurement, plate shape measurement before tension action, plate temperature measurement, and the like are performed.
- the strip S that has passed through the final stand 12 of the finishing rolling mill row 11 is the first cooling device 13 ⁇ the draining roll 15 ⁇ the tension / shape measuring device 16 ⁇ the pinch roll 14 ⁇ the air cooling zone 18 ⁇ the second cooling device 19 ⁇
- the pre-coiler pinch roll 20 After being conveyed to the pre-coiler pinch roll 20, it is wound up by the downcoiler 21.
- the pass line of the finish rolling mill row 11 (especially the final stand 12) is made substantially constant with the other pass lines, the cooling water injection state in the first cooling device 13 described later is favorable, which is preferable. .
- the first cooling device 13 directly ejects a large amount of cooling water from a large number of nozzles 22 on the upper and lower surfaces of the strip S at a cooling rate of, for example, about 1000 ° C./S. Can be rapidly cooled.
- the upper surface of the strip S is sprayed through a pool 23 of cooling water defined by the roll of the final stand 12 and the draining roll 15, and the lower surface of the strip S is passed through the apron 24. Cooling water is jetted through a number of jet holes (not shown) formed in.
- the tension / shape measuring device 16 is installed below the strip S.
- the distribution in the plate width direction of the pressing force to each roll 16a generated by the angle ⁇ is measured to determine the tension distribution from the pressing force distribution, and the plate shape is determined from the tension distribution.
- the tension / shape measuring device 16 has already been proposed in Patent Document 4 by the present applicant and the like, and detailed description thereof will be omitted with reference to this.
- the method of measuring the total tension distribution as the tension of the strip S there are the following methods.
- the tension / shape measuring device 16 is swung from the position of the broken line and provided with a winding angle ⁇ around the strip S.
- ⁇ winding angle
- the roll 16a of the tension / shape measuring device 16 has a target winding angle ⁇ arbitrarily determined with respect to the strip S after the leading end of the strip S is engaged with the pinch roll 14, and then the winding angle ⁇ is almost equal.
- the roll is maintained at the same value, and the winding angle ⁇ is eliminated before the rear end of the strip S passes through the roll 16a.
- the draining roll 15 does not pinch the strip S, even if the draining roll 15 and the tension / shape measuring device 16 are arranged close to each other, the tension of the cooling unit can be accurately measured by the tension / shape measuring device 16. is there.
- the load distribution is locally distributed in the plate width direction due to the plate width direction distribution of the contact pressure with the plate and the plate width direction distribution of the friction coefficient. Therefore, when the draining roll 15 is disposed close to the tension / shape measuring device 16, the above-mentioned local load distribution causes a problem in plate shape measurement.
- the draining roll 15 in contact with the upper surface of the strip S is constituted by a drive roll so that the rotational resistance of the roll itself to the strip S is reduced.
- bending acts on the strip S in contact with the draining roll 15, but this bending acts as compression and tension whose absolute values are almost equal on the front and back surfaces (upper surface and lower surface in the thickness direction) of the strip S.
- the tension distribution is not generated in the sheet width direction because it does not affect the tension, and the sheet shape can be accurately measured even when the tension / shape measuring device 16 is brought close to the draining roll 15.
- the temperature measuring device 17 is disposed above the strip S between the draining roll 15 and the pinch roll 14, and the plate shape obtained by the tension / shape measuring device 16 is determined as the difference in elongation in the rolling direction based on the plate width direction temperature distribution. It corrects by distribution, and operates the shape adjusting function of the rolling mill in at least the final stand 12 of the finish rolling mill row 11 so that the corrected plate shape becomes the target shape.
- a shape adjusting function of the rolling mill it is conceivable to perform shape control by changing a mechanical control means such as a roll bender or a shift or a width direction flow rate distribution of the roll coolant (see Patent Document 3).
- a method of crossing at least a work roll of a rolling mill is also considered as a shape adjusting function.
- the characteristic of (a) in the figure shows an example of the result of measuring the shape with the tension / shape measuring device 16. It can be seen that the shape of the quarter portion is elongated.
- the characteristic of (b) in the figure shows the temperature distribution in the plate width direction. It is the result measured with the temperature measuring device 17 of FIG.
- the characteristic (c) in the figure is a value obtained by calculating the elongation difference from the temperature distribution of the characteristic (b) in the figure.
- the characteristic of (d) in the figure the characteristic of (a) in the figure-the characteristic of (c) in the figure is the exit side of the finishing mill
- the shape before cooling is considered.
- a shape control function of the final stand 12 is intended to correct the shape before cooling having the characteristic (d) in the figure to the target shape having the characteristic (e) in the figure. In this way, a good plate shape after cooling can be obtained by adopting a rolling method in which the shape in the width direction becomes the target shape when the same temperature is reached.
- the tension distribution in the width direction is almost symmetrical and balanced, it can be said that the plate is in a condition that is difficult to traverse.
- the tension distribution in the width direction has a large difference between the working side and the driving side, it is conceivable that the conditions are such that the plate is likely to traverse.
- the tension distribution is required to be almost symmetrical in the width direction. Therefore, if there is an asymmetric temperature distribution on the working side and the driving side, the tension becomes symmetrical.
- rolling stability can be obtained. In this way, an operation combining (1) and (2), that is, an operation that satisfies both (1) and (2) is required.
- the distance L1 from the collision position of the cooling water in the first cooling device 13 to the tension / shape measuring device 16 and the distance L2 from the tension / shape measuring device 16 to the pinch roll 14 are (0 .5 to 1.0) ⁇ W (W is the maximum plate width here), and the distance L3 from the cooling water injection completion to the pinch roll 14 is as short as possible.
- Non-Patent Document 1 the installation position of the tension / shape measuring device 16 will be described based on Non-Patent Document 1 and Non-Patent Document 2.
- the influence of the load acting on the strip S can be considerably reduced by measuring the plate shape at least at least the plate width away from the position where the load is acting.
- the width to the strip S by the cooling water injection in the first cooling device 13 is used as the local external force that gives a tension distribution in the plate width direction on the entry side or the exit side of the position where the plate shape is measured. It is conceivable that the width-direction pressing condition is non-uniform due to the local collision force in the direction and the strip S sandwiched by the pinch roll 14.
- Each of the load acting position that is, the distance L1 from the collision position of the cooling water in the first cooling device 13 to the tension / shape measuring device 16 and the distance L2 from the tension / shape measuring device 16 to the pinch roll 14 are not less than the plate width.
- the local load is considered to be better in condition than at least the concentrated load. Therefore, it is considered that the influence of the external force load on the shape measurement in the tension / shape measuring device 16 is considerably reduced.
- FIG. 5A shows a calculation model.
- a load P per unit length acts as a concentrated load at the center in the width direction.
- the coefficient K is a ratio of the stress ( ⁇ y) in the plate width direction to the uniform stress (P / W).
- FIG. 5 (c) shows the relationship between the distance from the action point / plate width and the K value (K0) at the center of the plate width.
- the coefficient K0 is the ratio of the peak stress ( ⁇ y (0)) acting on the center of the plate width to the uniform stress (P / W).
- K0 is a value very close to 1.0, and further increases to 1.0 as c / W increases, and the uniformity of the load distribution in the width direction increases.
- FIG. 5 shows the relationship between the distance / plate width from the action point and the converted shape ⁇ shape at the center of the plate width.
- the unit of ⁇ shape is I-unit.
- the definition of I-unit is based on P.266 of Non-Patent Document 2, for example.
- the load P is in the direction of compression, but the same tendency occurs even if it acts in the direction of tension.
- the shape meter is intended to measure the plate shape inherent in a rolled and cooled plate. Considering this, the action of a local load such as a concentrated load is handled as an error in measurement of the plate shape measurement, and exists at the measurement point of the plate shape as the converted shape.
- the plate shape detected in rolling is generally 5 to 10 I-unit or more. It is preferable that the converted shape ⁇ shape, which causes an error in measuring the plate shape, is smaller. However, if it is 2I-unit or less, the influence on detecting 5 to 10I-unit or more can be reduced. From FIG. 5 (d), ⁇ shape is 2I-unit or less when c / W is 0.5 or more. In other words, the ⁇ shape can be 2I-unit or less from the point where the local load is applied to the position at least 0.5 times the plate width W, and the plate can be measured without any actual damage. The shape can be measured. Further, from FIG. 5D, when c / W becomes 0.5 or less, the converted shape ⁇ shape increases rapidly and cannot be ignored as an error in measurement.
- the tension in the rolling direction increases locally at that portion, and acts as a local load in the plate width direction.
- the load distribution acts locally in the width direction of the pinch roll due to the distribution of the contact pressure between the pinch roll and the plate in the plate width direction and the friction coefficient in the plate width direction.
- This local load distribution is not the shape inherent in the plate itself, but the converted shape ⁇ shape can be made 2I-unit or less by measuring the plate shape at least 0.5 times the plate width W. And the influence of local load on the plate shape measurement is almost eliminated.
- the influence of the local load is regarded as a local tension, which is a measurement error, that is, a disturbance.
- a local tension which is a measurement error, that is, a disturbance.
- the cooling water injection in the first cooling device 13 is completed by installing the tension / shape measuring device 16 at a position (0.5 to 1.0) ⁇ W away from the position where the local load is applied.
- the distance from the pinch roll 14 to the pinch roll 14 can be shortened, and the plate-shaped measurement can also reduce the disturbance due to the load acting on the strip S.
- the pinch roll 14 is arranged separately from the cooling device (the first cooling device 13), and the draining roll 15 and the non-water cooling zone (here, between the draining roll 15 and the pinch roll 14). Is provided.
- the cooling water on the upper surface of the strip S sprayed by the cooling device is cut by the draining roll 15, and the water is cut in the non-water cooling zone. Since the cooling water falls downward on the lower surface of the strip S, it can easily be free of water in the non-water cooling zone.
- the draining roll 15 and providing the non-water cooling zone the draining state is stabilized, the friction state between the strip S and the pinch roll 14 is stabilized, and the fluctuation of the friction coefficient, that is, the disturbance of the friction coefficient is reduced. can do.
- the pinch roll 14 is arranged separately from the cooling device so that the tension can be measured between the draining roll 15 and the pinch roll 14, an apparatus such as a tension fluctuation based on the moment of inertia of the pinch roll 14 itself.
- the actual tension can be grasped without considering the disturbance generated by the. By accurately grasping the tension, the adjustment to the target tension is facilitated, and the tension can be stably maintained.
- the first cooling device 13 is disposed immediately after the exit side of the finish rolling mill row 11, and the tension / shape measuring device 16 is disposed between the draining roll 15 and the pinch roll 14 so that the tension and the shape of the strip S are increased.
- the distance L1 from the collision position of the cooling water in the first cooling device 13 to the tension / shape measuring device 16 and the distance L2 from the tension / shape measuring device 16 to the pinch roll 14 are (0. 5 to 1.0) ⁇ W (maximum plate width), and the distance L3 from the completion of cooling water injection to the pinch roll 14 is made as short as possible.
- the yield can be increased while maintaining the high measurement accuracy of the tension / shape measuring device 16.
- the tension / shape measuring device 16 is installed between the draining roll 15 and the pinch roll 14, uniform cooling is possible by early plate tension and plate shape measurement, minimizing cooling unevenness and stable rolling. The state is obtained and the yield can be improved. Further, since the tension / shape measuring device 16 is integrated as a single device, space can be saved as compared to arranging them separately.
- the temperature measuring device 17 corrects the plate shape obtained by the tension / shape measuring device 16 with the elongation difference distribution in the rolling direction based on the temperature distribution in the plate width direction so that the corrected plate shape becomes the target shape. Since the shape adjusting function of the rolling mill in at least the final stand 12 of the finishing rolling mill row 11 is operated, the plate shape of the strip S that has exited the finishing rolling mill row 11 has already been adjusted to the target shape. Further, cooling unevenness does not occur. Of course, the shape of the strip S is adjusted by the rolling mill at least in the final stand 12 of the finishing rolling mill row 11 while the plate shape being cooled is detected by the tension / shape measuring device 16 without measuring the temperature by the temperature measuring device 17. You may make it do. The temperature measuring device 17 is installed at a position close to the tension / shape measuring device 16 so that the above correction is performed more accurately.
- the roll 16a of the tension / shape measuring device 16 has a target winding angle ⁇ that is arbitrarily determined with respect to the strip S after the end of the strip S is engaged with the pinch roll 14, and then the winding angle ⁇ is substantially equal. Since the winding angle ⁇ is eliminated before the rear end of the strip S passes through the roll 16a, the roll S is maintained at the same value, and immediately after the front end of the strip S is caught in the pinch roll 14.
- the target tension and shape can be set arbitrarily, and the cooling can be started at an early timing, thereby further improving the yield.
- the roll 16a of the tension / shape measuring device 16 can be used even if the looper does not move up and down like between the stands of the finish rolling mill row 11. .
- the winding angle ⁇ is constant, the apparatus becomes simple.
- FIG. 6 is an enlarged view of a main part of the hot rolling facility showing Example 2 of the present invention.
- This tension measuring device 16A has a load cell built in the bearings at both ends of one non-divided continuous roll 16a, and this is urged to the lower surface of the strip S by a pantograph mechanism or the like to measure the tension of the entire strip S. To do.
- the shape measuring means in the air cooling zone 18 is a plate shape measuring system for observing the appearance of the hot-rolled steel strip. The tension until the downcoiler 21 winds the tip of the strip S and the tension is applied. The shape is measured while it is not acting, and the shape adjustment is performed by the finish rolling mill 11 using the shape measurement result.
- the tension / shape measuring device 16 is moved up and down like the looper used between the stands of the finish rolling mill row 11 as in the present invention.
- the wrapping angle ⁇ it is possible to minimize the variation in the tension of the strip S.
- the tension fluctuation of the strip S between the pinch roll 14 and the final stand 12 can be minimized.
- the present invention is not limited to the above-described embodiments, and various modifications such as structural changes of the first cooling device 13 and the tension / shape measuring device 16 can be made without departing from the gist of the present invention. Not too long.
- the manufacturing apparatus and manufacturing method for hot-rolled steel strip according to the present invention can be applied to an iron-making process line.
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Abstract
Description
モータ出力Trは、Tr=Trt+ Trd
Trtは張力分のトルク、Trdはピンチロールを回転させるためのトルク
Trt=Tr-Trdであり、張力FtはFt=Trt/R・・・Rはピンチロールの半径
よって、測定できるTrからTrdを引くことで張力Ftを算出できる。
しかし、Trdはピンチロールと板との間の条件の変化や加速減速などピンチロール自身を回転制御するために必要なもので大きな変動要素のあるものである。Trdを張力算出の上での外乱と表現することもできる。
外乱を以下に表現してみると、
Trd=Trd1+Trd2+Trd3+・・・
Trd1:加速減速により変動するトルク・・・通板時の速度は低く、その後増速して、後端が抜ける前に減速するので、圧延中に、このトルク変動が大きくなる。これを考慮して張力をある設定値に入れることはかなり困難であり、実際の張力の変動は避けがたい。特許文献1ではピンチロールの慣性モーメントを小さくする対策が述べられている。しかし、慣性モーメントの影響で加速減速のたびに反転するトルク変化が張力変化になってしまうことを制御的に避けることが難しく、設定張力を安定的に維持することは難しい。
Trd2:ピンチロールのころがり抵抗の変化・・・ピンチロールの押付力を一定としても、速度変化があると、ころがり抵抗も変化する。ころがり抵抗の絶対値を低くするなどの対策によって、ころがり抵抗の変化を無視するようにするなどの対策が必要と考えられる。
Trd3:圧延中に板厚変化があるとき・・・ピンチロールの上下動をともない、機械系にヒステリシスがあると正味の押付力(板を押し付ける力)に変化が生じる。そのために張力が変動する。
尚、Trについて少し考察する。
例えば、ピンチロールによって張力が作用中に摩擦係数μ(縦軸:トラクション係数、横軸:すべり速度或いはすべり率で整理されたμカーブ)の変化がある。通板時が乾燥状態で、冷却開始で湿潤状態となるがこの過程でμカーブが刻々と変化する。このμの変化に対してモータ出力トルクでコントロールしようとするとμの正確な値を必要とするが、μは、熱延鋼帯の温度や表面の状態(凹凸、乾燥か湿潤かなど)、また、ピンチロール表面の摩擦などの影響も受けることから、このμを把握することは難しいと考えられる。
仕上げ圧延機列と、該仕上げ圧延機列の出側直後に設置された冷却装置と、該冷却装置の出側に設置されて熱延鋼帯の上,下両面に当接するピンチロールと、を備えるとともに、前記冷却装置とピンチロールとの間に少なくとも熱延鋼帯の上方に位置した水切りロールを配置し、かつ該水切りロールとピンチロールとの間に熱延鋼帯の張力を測定する張力測定装置を設置したことを特徴とする。
前記張力測定装置は熱延鋼帯に任意の巻き付け角を設けたロールを有し、巻き付け角によって生じるロールへの押し付け力を測定して熱延鋼帯に作用した張力を求めるようにしたことを特徴とする。
仕上げ圧延機列と、該仕上げ圧延機列の出側直後に設置された冷却装置と、該冷却装置の出側に設置されて熱延鋼帯の上,下両面に当接するピンチロールと、を備えるとともに、前記冷却装置とピンチロールとの間に少なくとも熱延鋼帯の上方に位置した水切りロールを配置し、かつ該水切りロールとピンチロールとの間に熱延鋼帯の板形状を測定する形状計を設置したことを特徴とする。
前記形状計は熱延鋼帯に任意の巻き付け角を設けて熱延鋼帯の板幅方向に分割された複数のロールを有し、巻き付け角によって生じる各ロールへの押し付け力の板幅方向の分布を測定して該押付力分布から張力分布を求め、該張力分布から板形状を求めるようにしたことを特徴とする。
前記張力測定装置と形状計とは同一の装置であることを特徴とする。
前記張力測定装置及び/又は形状計は、ロールの上部に巻き付け角が存在することを特徴とする。
前記張力測定装置及び/又は形状計は、仕上げ圧延機列とピンチロールとの間の熱延鋼帯の張力が変化しようとしたときに、巻き付け角が変動して前記張力の変動が極力小さくなるようにしたことを特徴とする。
前記水切りロールは駆動ロールとし、水切りロール自身の熱延鋼帯への回転抵抗が極力小さくなるようにしたことを特徴とする。
仕上げ圧延機列と、該仕上げ圧延機列の出側直後に設置された冷却装置と、該冷却装置の出側に設置されて熱延鋼帯の上,下両面に当接するピンチロールと、を備えるとともに、前記冷却装置とピンチロールとの間に少なくとも熱延鋼帯の上方に位置した水切りロールを配置し、かつ該水切りロールとピンチロールとの間に熱延鋼帯の板形状を測定する形状計を設置し、さらには水切りロールからピンチロール出側に設置した空冷ゾーンを含む領域に熱延鋼帯の板幅方向温度分布を測定する熱延鋼帯温度計測装置を設置したことを特徴とする。
前記熱延鋼帯温度計測装置は、水切りロールとピンチロールとの間に設置したことを特徴とする。
仕上げ圧延機列と、該仕上げ圧延機列の出側直後に設置された冷却装置と、該冷却装置の出側に設置されて熱延鋼帯の上,下両面に当接するピンチロールと、を備えるとともに、前記冷却装置とピンチロールとの間に少なくとも熱延鋼帯の上方に位置した水切りロールを配置し、かつ該水切りロールとピンチロールとの間に熱延鋼帯の張力を測定する張力測定装置及び/又は熱延鋼帯の板形状を測定する形状計を設置し、前記張力測定装置及び/又は形状計のロールは熱延鋼帯の先端がピンチロールに噛み込んだ後に、熱延鋼帯に対し任意に定めた目標とする巻き付け角となるようにしたことを特徴とする。
前記張力測定装置及び/又は形状計のロールは、熱延鋼帯の先端がピンチロールに噛み込んだ後に熱延鋼帯に対し任意に定めた目標とする巻き付け角に設定され、その後は巻き付け角はほぼ同様の値に維持されて圧延し、熱延鋼帯の後端が当該ロールを通過する前に巻き付け角がなくなるようにしたことを特徴とする。
仕上げ圧延機列と、該仕上げ圧延機列の出側直後に設置された冷却装置と、該冷却装置の出側に設置されて熱延鋼帯の上,下両面に当接するピンチロールと、を備えるとともに、前記冷却装置とピンチロールとの間に少なくとも熱延鋼帯の上方に位置した水切りロールを配置し、かつ該水切りロールとピンチロールとの間に熱延鋼帯の板形状を測定する形状計を設置し、前記冷却装置による冷却下の板形状を検出しながら、仕上げ圧延機列の少なくとも最終スタンドにおける圧延機の形状調整機能を動作させるようにしたことを特徴とする。
前記ピンチロールの出側に空冷ゾーンを設け、前記水切りロールからピンチロール出側の空冷ゾーンを含む領域に熱延鋼帯の板幅方向温度分布を測定する熱延鋼帯温度計測装置を設置し、前記形状計で求めた板形状を、板幅方向温度分布に基づく圧延方向の伸び差分布で補正し、補正後の板形状を目標形状となるように仕上げ圧延機列の少なくとも最終スタンドにおける圧延機の形状調整機能を動作させるようにしたことを特徴とする。
このように、同じ温度になったときに、幅方向の形状が目標形状になるような圧延方法とすることによって、冷却後の良好な板形状を得ることができる。
(2)一方、圧延の安定性を考えたとき、上記の方法と異なる使い方も存在する。幅方向の張力分布がほぼ対称でバランスしていれば、板は横行しにくい条件であることが言える。しかし、幅方向の張力分布が作業側と駆動側で差が大きい場合、板が横行しやすい条件となっていることが考えられる。この板の横行が問題となる場合は、張力分布が幅方向でほぼ対称になっていることが求められるため、作業側と駆動側で非対称な温度分布があったときは張力が対称になるように仕上げ圧延機列11をコントロールすることで圧延の安定性が得られる。
このように、(1)と(2)を組み合わせた操業、つまり、(1),(2)を両立した操業が求められる。
11 仕上げ圧延機列
12 最終スタンド
13 第1の冷却装置
14 ピンチロール
15 水切りロール
16 張力/形状測定装置
16A 張力測定装置
16a ロール
17 温度測定装置
18 空冷ゾーン
19 第2の冷却装置
20 コイラ前ピンチロール
21 ダウンコイラ
22 ノズル
23 冷却水のプール
24 通板エプロン
S ストリップ
θ 巻き付け角
Claims (14)
- 仕上げ圧延機列と、該仕上げ圧延機列の出側直後に設置された冷却装置と、該冷却装置の出側に設置されて熱延鋼帯の上,下両面に当接するピンチロールと、を備えるとともに、前記冷却装置とピンチロールとの間に少なくとも熱延鋼帯の上方に位置した水切りロールを配置し、かつ該水切りロールとピンチロールとの間に熱延鋼帯の張力を測定する張力測定装置を設置したことを特徴とする熱延鋼帯の製造装置。
- 前記張力測定装置は熱延鋼帯に任意の巻き付け角を設けたロールを有し、巻き付け角によって生じるロールへの押し付け力を測定して熱延鋼帯に作用した張力を求めるようにしたことを特徴とする請求項1に記載の熱延鋼帯の製造装置。
- 仕上げ圧延機列と、該仕上げ圧延機列の出側直後に設置された冷却装置と、該冷却装置の出側に設置されて熱延鋼帯の上,下両面に当接するピンチロールと、を備えるとともに、前記冷却装置とピンチロールとの間に少なくとも熱延鋼帯の上方に位置した水切りロールを配置し、かつ該水切りロールとピンチロールとの間に熱延鋼帯の板形状を測定する形状計を設置したことを特徴とする熱延鋼帯の製造装置。
- 前記形状計は熱延鋼帯に任意の巻き付け角を設けて熱延鋼帯の板幅方向に分割された複数のロールを有し、巻き付け角によって生じる各ロールへの押し付け力の板幅方向の分布を測定して該押付力分布から張力分布を求め、該張力分布から板形状を求めるようにしたことを特徴とする請求項3に記載の熱延鋼帯の製造装置。
- 前記張力測定装置と形状計とは同一の装置であることを特徴とする請求項1又は3に記載の熱延鋼帯の製造装置。
- 前記張力測定装置及び/又は形状計は、ロールの上部に巻き付け角が存在することを特徴とする請求項1又は3に記載の熱延鋼帯の製造装置。
- 前記張力測定装置及び/又は形状計は、仕上げ圧延機列とピンチロールとの間の熱延鋼帯の張力が変化しようとしたときに、巻き付け角が変動して前記張力の変動が極力小さくなるようにしたことを特徴とする請求項1又は3に記載の熱延鋼帯の製造装置。
- 前記水切りロールは駆動ロールとし、水切りロール自身の熱延鋼帯への回転抵抗が極力小さくなるようにしたことを特徴とする請求項1又は3に記載の熱延鋼帯の製造装置。
- 仕上げ圧延機列と、該仕上げ圧延機列の出側直後に設置された冷却装置と、該冷却装置の出側に設置されて熱延鋼帯の上,下両面に当接するピンチロールと、を備えるとともに、前記冷却装置とピンチロールとの間に少なくとも熱延鋼帯の上方に位置した水切りロールを配置し、かつ該水切りロールとピンチロールとの間に熱延鋼帯の板形状を測定する形状計を設置し、さらには水切りロールからピンチロール出側に設置した空冷ゾーンを含む領域に熱延鋼帯の板幅方向温度分布を測定する熱延鋼帯温度計測装置を設置したことを特徴とする熱延鋼帯の製造装置。
- 前記熱延鋼帯温度計測装置は、水切りロールとピンチロールとの間に設置したことを特徴とする請求項9に記載の熱延鋼帯の製造装置。
- 仕上げ圧延機列と、該仕上げ圧延機列の出側直後に設置された冷却装置と、該冷却装置の出側に設置されて熱延鋼帯の上,下両面に当接するピンチロールと、を備えるとともに、前記冷却装置とピンチロールとの間に少なくとも熱延鋼帯の上方に位置した水切りロールを配置し、かつ該水切りロールとピンチロールとの間に熱延鋼帯の張力を測定する張力測定装置及び/又は熱延鋼帯の板形状を測定する形状計を設置し、前記張力測定装置及び/又は形状計のロールは熱延鋼帯の先端がピンチロールに噛み込んだ後に、熱延鋼帯に対し任意に定めた目標とする巻き付け角となるようにしたことを特徴とする熱延鋼帯の製造方法。
- 前記張力測定装置及び/又は形状計のロールは、熱延鋼帯の先端がピンチロールに噛み込んだ後に熱延鋼帯に対し任意に定めた目標とする巻き付け角に設定され、その後は巻き付け角はほぼ同様の値に維持されて圧延し、熱延鋼帯の後端が当該ロールを通過する前に巻き付け角がなくなるようにしたことを特徴とする請求項11に記載の熱延鋼帯の製造方法。
- 仕上げ圧延機列と、該仕上げ圧延機列の出側直後に設置された冷却装置と、該冷却装置の出側に設置されて熱延鋼帯の上,下両面に当接するピンチロールと、を備えるとともに、前記冷却装置とピンチロールとの間に少なくとも熱延鋼帯の上方に位置した水切りロールを配置し、かつ該水切りロールとピンチロールとの間に熱延鋼帯の板形状を測定する形状計を設置し、前記冷却装置による冷却下の板形状を検出しながら、仕上げ圧延機列の少なくとも最終スタンドにおける圧延機の形状調整機能を動作させるようにしたことを特徴とする熱延鋼帯の製造方法。
- 前記ピンチロールの出側に空冷ゾーンを設け、前記水切りロールからピンチロール出側の空冷ゾーンを含む領域に熱延鋼帯の板幅方向温度分布を測定する熱延鋼帯温度計測装置を設置し、前記形状計で求めた板形状を、板幅方向温度分布に基づく圧延方向の伸び差分布で補正し、補正後の板形状を目標形状となるように仕上げ圧延機列の少なくとも最終スタンドにおける圧延機の形状調整機能を動作させるようにしたことを特徴とする請求項13に記載の熱延鋼帯の製造方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2820873A CA2820873C (en) | 2010-09-28 | 2011-09-05 | Manufacturing device and manufacturing method for hot-rolled steel strip |
EP11828709.3A EP2623221B2 (en) | 2010-09-28 | 2011-09-05 | Manufacturing device and manufacturing method for hot-rolled steel strip |
BR112013007338A BR112013007338A2 (pt) | 2010-09-28 | 2011-09-05 | dispositivo e método de fabricação para uma tira de aço laminada a quente |
MX2013003575A MX2013003575A (es) | 2010-09-28 | 2011-09-05 | Dispositivo de fabricacion y metodo de fabricacion para tira de acero laminada en caliente. |
US13/876,360 US9085022B2 (en) | 2010-09-28 | 2011-09-05 | Manufacturing device and manufacturing method for hot-rolled steel strip |
KR1020137007610A KR101464093B1 (ko) | 2010-09-28 | 2011-09-05 | 열연 강대의 제조 장치 및 제조 방법 |
CN201180046094.0A CN103189152B (zh) | 2010-09-28 | 2011-09-05 | 热轧钢带的制造装置及制造方法 |
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JP2010216352A JP4918155B2 (ja) | 2010-09-28 | 2010-09-28 | 熱延鋼帯の製造装置及び製造方法 |
JP2010-216352 | 2010-09-28 |
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US (1) | US9085022B2 (ja) |
EP (1) | EP2623221B2 (ja) |
JP (1) | JP4918155B2 (ja) |
KR (1) | KR101464093B1 (ja) |
CN (1) | CN103189152B (ja) |
BR (1) | BR112013007338A2 (ja) |
CA (1) | CA2820873C (ja) |
MX (1) | MX2013003575A (ja) |
TW (1) | TWI486219B (ja) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9833823B2 (en) | 2013-05-03 | 2017-12-05 | Sms Group Gmbh | Method for producing a metal strip |
Families Citing this family (9)
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JP5946380B2 (ja) * | 2012-09-10 | 2016-07-06 | 新日鐵住金株式会社 | 熱延鋼板の冷却装置、製造装置、及び、製造方法 |
PL2740549T3 (pl) * | 2012-12-07 | 2016-10-31 | Rolka napędowa urządzenia zwijającego walcowni | |
DE102013221710A1 (de) | 2013-10-25 | 2015-04-30 | Sms Siemag Aktiengesellschaft | Aluminium-Warmbandwalzstraße und Verfahren zum Warmwalzen eines Aluminium-Warmbandes |
JP6323812B2 (ja) * | 2015-02-09 | 2018-05-16 | ジヤトコ株式会社 | ワーク測定装置 |
DE102015102765B4 (de) | 2015-02-26 | 2018-05-17 | Vacuumschmelze Gmbh & Co. Kg | Fördersystem zum Spannen für ein Nachbehandeln eines rascherstarrten Metallbandes und Nachbehandlungsverfahren |
TWI574754B (zh) * | 2016-04-22 | 2017-03-21 | 中國鋼鐵股份有限公司 | 軋輥機台監控方法 |
JP6880610B2 (ja) * | 2016-09-09 | 2021-06-02 | 株式会社Ihi | 張力分布制御装置及び帯状体搬送装置 |
JP7063074B2 (ja) * | 2018-04-11 | 2022-05-09 | トヨタ紡織株式会社 | プレス加工装置 |
JP7135991B2 (ja) * | 2019-04-25 | 2022-09-13 | トヨタ自動車株式会社 | 校正判断装置、及び校正判断方法 |
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- 2011-09-05 CA CA2820873A patent/CA2820873C/en active Active
- 2011-09-05 KR KR1020137007610A patent/KR101464093B1/ko active IP Right Grant
- 2011-09-05 MX MX2013003575A patent/MX2013003575A/es not_active Application Discontinuation
- 2011-09-05 WO PCT/JP2011/070108 patent/WO2012043148A1/ja active Application Filing
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- 2011-09-05 BR BR112013007338A patent/BR112013007338A2/pt not_active Application Discontinuation
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Cited By (1)
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US9833823B2 (en) | 2013-05-03 | 2017-12-05 | Sms Group Gmbh | Method for producing a metal strip |
Also Published As
Publication number | Publication date |
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CA2820873C (en) | 2015-11-03 |
EP2623221A1 (en) | 2013-08-07 |
EP2623221B2 (en) | 2023-07-26 |
EP2623221A4 (en) | 2014-09-10 |
EP2623221B1 (en) | 2016-04-06 |
US9085022B2 (en) | 2015-07-21 |
KR101464093B1 (ko) | 2014-11-21 |
TWI486219B (zh) | 2015-06-01 |
CN103189152B (zh) | 2015-04-08 |
CA2820873A1 (en) | 2012-04-05 |
CN103189152A (zh) | 2013-07-03 |
US20130247638A1 (en) | 2013-09-26 |
JP4918155B2 (ja) | 2012-04-18 |
MX2013003575A (es) | 2013-10-30 |
BR112013007338A2 (pt) | 2017-11-21 |
KR20130055003A (ko) | 2013-05-27 |
JP2012071316A (ja) | 2012-04-12 |
TW201223654A (en) | 2012-06-16 |
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