KR102297570B1 - The cooling control system of hot rolled steel sheet - Google Patents

Abstract

In the cooling control system of a hot-rolled steel sheet comprising a transfer member, a water cooling member, a temperature measuring member and a control member, the temperature measuring member is at least one positioned on one side of the water cooling member, A temperature distribution measuring unit for measuring a temperature distribution in the width direction of a moving hot-rolled steel sheet, and a proximity temperature measuring unit for verifying the measured temperature distribution by measuring the proximity temperature of the hot-rolled steel sheet, wherein the proximity temperature measuring unit includes a predetermined temperature distribution. A cooling control system for a hot-rolled steel sheet, characterized in that the proximity temperature of the hot-rolled steel sheet is measured at the top of the middle point of the traveling table by moving horizontally at the height of do.

Description

The cooling control system of hot rolled steel sheet}

The present invention relates to a cooling control system for a hot-rolled steel sheet, by measuring the proximity temperature of the hot-rolled steel sheet during the cooling process of the hot-rolled steel sheet and further verifying the temperature distribution measured in the width direction to uniformly control the quality of the water-cooled hot-rolled steel sheet. It relates to a cooling control system for hot-rolled steel sheet that can achieve optimization of phase transformation according to various types of steel.

In order to secure high strength, toughness and brittleness, the hot rolling manufacturing technology of high-strength materials injects special additives in the smelting process and manufactures them through hot rolling, but winding conditions at a low temperature so that the final phase transformation target temperature is less than 350℃ ask for Accordingly, in order to secure low-temperature coiling technology, technology development for measuring the temperature of the upper and lower parts of the steel plate during the coiling and cooling process is in progress. Therefore, leading steelmakers are trying to achieve the phase transformation temperature management level of the steel sheet for high-strength materials within ±100°C.

As a temperature detection means in the process for measuring the room temperature of a steel strip, a radiation pyrometer, which is a representative detection method using thermal radiation energy emitted from the strip, that is, radiant energy, is called a radiation thermometer, and the temperature below 500 ℃ In detection, there is a disadvantage that emissivity correction must be used after repeated verification.

In order to solve this problem, an optical fiber type radiation thermometer can be used as a temperature measuring device as a method of measuring the temperature by detecting the infrared emissivity. Measure the surface temperature of the hot-rolled steel sheet.

1 shows a conventional hot-rolled steel sheet cooling apparatus. Referring to FIG. 1 , the temperature measuring device 40 is a hot-rolled steel sheet (S) from the upper side with an angle of about 70 degrees from the upper surface of the hot-rolled steel sheet (S) in the measurement direction. Measure the surface temperature of That is, the temperature measuring device 40 provided in plurality in a narrow space provided on one side of the lamina bank 20 for cooling water injection measures the temperature of the middle point of the hot-rolled steel sheet S moving the traveling table 10 . That is, due to the cooling water 22, a large amount of water vapor is generated around the temperature detection area, so that the emissivity of the temperature measuring device may be lowered, and thus, an error may occur in detecting the temperature of the hot-rolled steel sheet (S).

2 is a graph showing the actual temperature and deviation of the conventional hot-rolled steel sheet cooling state. Referring to FIG. 2, the temperature (A) of the hot-rolled steel sheet detected at the first shear side has almost no deviation, but in the process of constant speed operation of the hot-rolled steel sheet. It can be seen that the temperature deviation of (B) is continuously maintained, and the measured target temperature detection value (C) is measured without deviation at the last end. In finally completing the phase transformation of the hot-rolled steel sheet by controlling the cooling temperature, as the error range of the target temperature increases, the steel component cannot be uniformly manufactured, so quality problems may occur.

Therefore, in the conventional apparatus as shown in FIG. 1, there is no choice but to accompany the deviation in temperature detection, and technology development is required to solve this problem.

1. Korea Patent Publication No. 10-2004-0046126 (published on Jun. 05, 2004) 2. Korean Patent No. 10-1149210 (Registered on May 16, 2012)

The technical problem to be achieved by the present invention is to minimize the error of the surface temperature by measuring the surface temperature of a hot-rolled steel sheet moving on a traveling table of a transfer member at a close distance to manufacture a hot-rolled steel sheet made of a uniform steel component. An object of the present invention is to provide a cooling control system of

In addition, another technical task to be achieved by the present invention is to control the entry and exit timings of the proximity temperature measuring device to prevent collision with the hot-rolled steel plate of thin or thick plates that may occur in the process of measuring the temperature of the hot-rolled steel plate. An object of the present invention is to provide a cooling control system for a hot-rolled steel sheet.

In addition, another technical task to be achieved by the present invention is to differentiate the start and end points of temperature measurement for each speed according to the thickness of the hot-rolled steel sheet, and to quickly achieve rapid results through a combination of various signals that may occur during the water cooling and winding process of the hot-rolled steel sheet. It is an object of the present invention to provide a cooling control system for hot-rolled steel sheet that can perform accurate control.

The purpose of the embodiments of the present invention is not limited to the above-mentioned purpose, and other objects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. .

In order to solve the above problem, the present invention provides a cooling control system for a hot-rolled steel sheet comprising a transfer member, a water cooling member, a temperature measuring member and a control member, wherein the temperature measuring member is at least on one side of the water cooling member. A temperature distribution measuring unit for measuring a temperature distribution in the width direction of a hot-rolled steel sheet located at one or more locations but moving a traveling target of the transfer member, and a proximity temperature measurement for verifying the measured temperature distribution by measuring the proximity temperature of the hot-rolled steel sheet The proximity temperature measuring unit horizontally moves at a predetermined height to measure the proximity temperature of the hot-rolled steel sheet above the midpoint of the traveling platform, wherein the measurement section is set according to the thickness or feed rate of the hot-rolled steel sheet It is possible to provide a cooling control system for a hot-rolled steel sheet.

The proximity temperature measurement unit includes a temperature measurement module, a horizontal transfer table for horizontally moving the temperature measurement module, a fixed base vertically connected to one end of the horizontal transfer table and mounted at one end of the temperature measurement module, and the horizontal transfer unit. It may include a proximity temperature measurement control module for controlling the pedestal and the temperature measurement module.

The control member includes a transfer control unit for controlling the transfer speed or tension of the hot-rolled steel sheet, a temperature control unit connected to the temperature measuring member and the water cooling member to control a temperature distribution state of the hot-rolled steel sheet, the transfer control unit or A manual control unit directly controlled by the driver according to an abnormal signal or an emergency signal generated from the temperature control unit may be included.

The control member may set the measurement section by performing a tracking mode at the same time as starting the operation of the cooling control system of the hot-rolled steel strip, and control the entry timing and evacuation timing of the proximity temperature measurement unit to the traveling platform. .

The proximity temperature measuring unit enters and retreats on the traveling platform according to the tip and the trailing end of the hot-rolled steel sheet set according to the thickness of the writing input to the control material, and the proximity temperature measurement unit is the tip region of the traveling platform at a midpoint When passing through, it enters the middle point of the driving platform, and when the tail end region moves to the entry section of the driving platform, it may be evacuated to the outer side of the hot-rolled steel sheet.

The proximity temperature measuring unit enters the middle point of the traveling table by the load forming signal of the winder located at one end of the conveying member, and by the unloading signal of at least one of the rolls of the finishing rolling device located at the other end of the conveying member. It may be evacuation to the outer side of the running platform.

The cooling system of the hot-rolled steel sheet according to the embodiment of the present invention is provided with a proximity temperature measuring unit of the temperature measuring member, so that the surface temperature of the hot-rolled steel sheet being moved on the traveling table of the conveying member is measured at a close distance, and the temperature distribution measuring unit is measured. It is possible to verify the temperature distribution of one hot-rolled steel sheet, which has the advantage of being able to manufacture a hot-rolled steel sheet made of a uniform steel component by cooling the hot-rolled steel sheet so that the error of the surface temperature is minimized.

In addition, by controlling the temperature measurement entry and retreat timing of the proximity temperature measuring unit, it is possible to prevent collision of thin or thick plates with the hot-rolled steel plate, which may occur during the temperature measurement process of the hot-rolled steel sheet.

Furthermore, due to the control material, it is possible to differentiate the start and end points of temperature measurement for each speed according to the thickness of the hot-rolled steel sheet, and to perform quick and accurate control through a combination of various signals that may occur during the water cooling and winding process of the hot-rolled steel sheet. There are advantages to doing.

1 is a view showing a conventional hot-rolled steel sheet cooling device;
2 is a graph showing the measured temperature and deviation of the conventional hot-rolled steel sheet cooling state;
3 is a view showing a cooling control system of a hot-rolled steel sheet according to an embodiment of the present invention;
4 is a view showing the forward operation of the hot-rolled steel sheet cooling device and the proximity distance measuring unit according to an embodiment of the present invention;
5 is a view showing a reverse operation of a hot-rolled steel sheet cooling device and a proximity distance measuring unit according to an embodiment of the present invention;
6 is a side view showing the operation of the proximity distance measuring unit of the hot-rolled steel sheet cooling device according to an embodiment of the present invention;
7 is an upper side view showing the operation of the proximity distance measuring unit of the hot-rolled steel sheet cooling apparatus according to an embodiment of the present invention;
8 is a side view showing an example of a strip state of the front end or tail end of a hot-rolled steel sheet;
9 is a control flowchart showing a control method of a cooling control system of a hot-rolled steel sheet according to an embodiment of the present invention;
10 is a control flow chart showing a tracking mode of a cooling control system of a hot-rolled steel sheet according to an embodiment of the present invention;
11 is a graph showing a temperature distribution state of a hot-rolled steel sheet using the hot-rolled steel sheet cooling control system according to an embodiment of the present invention.

Advantages and features of embodiments of the present invention, and methods of achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

In describing the embodiments of the present invention, if it is determined that a detailed description of a well-known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the terms to be described later are terms defined in consideration of functions in an embodiment of the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout this specification.

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

1 is a view showing a conventional hot-rolled steel sheet cooling device, FIG. 2 is a graph showing the measured temperature and deviation of the conventional hot-rolled steel sheet cooling state, and FIG. 3 is a view showing a cooling control system for a hot-rolled steel sheet according to an embodiment of the present invention , FIG. 4 is a view showing the forward operation of the hot-rolled steel sheet cooling apparatus and the proximity measurement unit according to an embodiment of the present invention, FIG. 5 is a view showing the backward operation of the hot-rolled steel sheet cooling apparatus and the proximity measurement unit according to the embodiment , Figure 6 is a side view showing the operation of the proximity distance measuring unit of the hot-rolled steel sheet cooling device according to an embodiment of the present invention, Figure 7 is a top side view showing the operation of the proximity distance measuring unit of the hot-rolled steel sheet cooling device according to the embodiment of the present invention, 8 is a side view showing an example of a strip state of a front end or a tail end of a hot-rolled steel sheet, FIG. 9 is a control flow chart showing a control method of a cooling control system of a hot-rolled steel sheet according to an embodiment of the present invention, and FIG. 10 is an embodiment of the present invention 11 is a control flowchart showing a tracking mode of the cooling control system of the hot-rolled steel sheet according to FIG. 11 is a graph showing the temperature distribution of the hot-rolled steel sheet using the hot-rolled steel sheet cooling control system according to an embodiment of the present invention.

3 to 11, the hot-rolled steel sheet cooling control system according to the embodiment of the present invention may be composed of a transfer member, a water cooling member, a temperature measuring member and a control member.

The conveying member includes a traveling platform 100 for conveying the hot-rolled steel sheet S that has passed through the finishing rolling device 600 to the winder 700, and a traveling platform driving unit M for driving the traveling table 100. It may include, and the control member may control the feeding speed, tension, or water cooling condition of the hot-rolled steel sheet (S) according to the temperature distribution state of the hot-rolled steel sheet (S) measured from the temperature measuring member. The water cooling member 300 is connected to a cooling water storage tank 200 such as a lamina bank, is located on the transfer member, and can cool the hot-rolled steel sheet S by spraying cooling water.

The temperature measuring member may include a temperature distribution measuring unit 400 and a proximity temperature measuring unit 500 . The temperature distribution measuring unit 400 measures the temperature distribution in the width direction of the hot-rolled steel sheet (S) which is positioned on one side of the water cooling member 200 and moves on the traveling table 100 of the conveying member. The proximity temperature measurement unit 500 may measure the proximity temperature of the hot-rolled steel sheet S to verify the temperature distribution measured by the temperature distribution measurement unit 400 .

As shown in FIGS. 4 to 6 , the proximity temperature measuring unit 500 moves horizontally at a predetermined height L from the hot-rolled steel sheet S, and the proximity of the hot-rolled steel sheet S is located above the midpoint of the traveling platform 100 . The temperature is measured, but the measurement period may be set according to the thickness or the feed speed of the hot-rolled steel sheet (S).

In addition, the proximity temperature measurement unit 500 includes a temperature measurement module 510 , a horizontal transfer table 530 for horizontally moving the temperature measurement module 510 , and a vertical portion at one end of the horizontal transfer table 530 . Connected to and provided with a proximity temperature measurement control module 7 for controlling the fixed base 520 and the horizontal transfer table 530 and the temperature measuring module 510 to which the temperature measuring module 510 is mounted on one end can For example, the temperature measurement module 510 may be located at a height L of 120 to 170 mm from the surface of the hot-rolled steel sheet S, and is performed by the horizontal transfer table 530 at a fixed height without vertical movement. A horizontal forward or horizontal backward motion may be performed.

Furthermore, the proximity temperature measurement unit 500 may further include a shoulder support module 540 for supporting the horizontal transport table 530 and a horizontal transport table driving device 550 . For example, the assembly structure 542 of the cooling water storage tank 200 and the water cooling member 300 may be arranged to be firmly supported by being assembled with an H beam with strong rigidity, and the shoulder attachment support module ( 540) may be coupled to the assembly structure. A roller-shaped wheel 544 may be assembled inside the shoulder support module 540 , and the horizontal transporter 530 may move horizontally by sliding of the wheel 544 . In addition, the horizontal transfer table driving device 550 is connected to the proximity temperature measurement control module 7, and may include a pneumatic cylinder and an air solenoid operating the same, that is, by moving the pneumatic cylinder forward or backward, the wheel ( 544 may reduce the load during movement of the horizontal transfer table 530 located in the rectangular insertion tube 546 by a sliding motion. In addition, the horizontal transport table driving device 550 may include a position detection sensor for detecting and detecting a forward position or a reverse position to accurately detect the position of the horizontal transport table 530 .

Therefore, the horizontal transfer table 530 can move to the upper part of the hot-rolled steel sheet S due to the horizontal transfer table driving device 550, and accordingly, the fixing table 520 connected to one end of the horizontal transfer table 530 is hot-rolled. Since it can move close to the upper surface of the steel plate S, the temperature measuring module 510 located at the end of the fixing table 520 can measure the proximity temperature of the hot-rolled steel plate S. The temperature measuring member is provided with the proximity temperature measuring unit 500 to measure the surface temperature of the hot-rolled steel sheet (S) moving on the traveling table 100 of the conveying member at a close distance, and the temperature distribution measuring unit 400 measures it. The temperature distribution of one hot-rolled steel sheet (S) can be verified. Therefore, since it is possible to measure the temperature in real time in close proximity to the upper surface of the hot-rolled steel sheet S on the running table 100, the temperature distribution error of the temperature distribution measuring unit 400 generated due to a large amount of water vapor formed during the cooling process is reduced. It can be further reduced to ± 20 ℃ or less, and there is an effect that the temperature measurement management closest to the actual temperature of the hot-rolled steel sheet (S) can be achieved.

That is, the proximity temperature measurement unit 500 is provided as a detection device for verifying whether the set target temperature has been reached, and a temperature measurement module 510 such as a radiation pyrometer (Pyrometer) is positioned at the midpoint of the traveling platform 100 and , by measuring the upper surface temperature in real time when the hot-rolled steel sheet (S) travels, the detected proximity temperature measurement value can be returned to the control unit. For this reason, so that the deviation between the surface temperature distribution measured by the temperature distribution measuring unit 400 and the surface temperature measured by the proximity temperature measuring unit 500 is minimized, the control member includes the height of the water cooling member 300 and the cooling water 202 ), a hot-rolled steel sheet made of a uniform steel component can be manufactured by controlling the flow rate, water pressure, etc., and cooling the hot-rolled steel sheet S by spraying cooling water 202 according to the controlled command.

The control member includes a transfer control unit 3 for controlling the transfer speed or tension of the hot-rolled steel sheet (S), and is connected to the temperature measuring member and the water cooling member to control the temperature distribution state of the hot-rolled steel sheet (S) The temperature control unit 1 and the transfer control unit 3 or the manual control unit 5 directly controlled by the driver according to an abnormal signal or an emergency signal generated from the temperature control unit 1 may be included.

In the cooling control system of the hot-rolled steel sheet according to the embodiment of the present invention, the main control of the control material for the proximity temperature measurement unit 500 is the measurement start command, the measurement end command, and the emergency evacuation command of the proximity temperature measurement unit 500 . can be divided into three categories.

Referring to FIG. 9 , the temperature control unit 1 and the transfer control unit 3 may execute a transfer mode S110-1 and a temperature control mode S110-2 for a measurement start command. For example, in the automatic operation mode designation state of the transfer control unit 3, the characteristics of the hot-rolled steel sheet to be put on the transfer member are input, and the temperature controller 1 may check the abnormality of the temperature measuring member.

Next, after checking the cooling control system, it can be operated (S120). At this time, the control member performs a tracking mode at the same time as starting the operation of the cooling control system of the hot-rolled steel sheet (S) with a measurement start command (S160) to set a measurement section, and the proximity to the traveling platform 100 The entry timing and exit timing of the temperature measuring unit 500 may be controlled.

That is, when the hot-rolled steel sheet S starts to be transferred after the cooling control system is operated, the proximity temperature measuring unit 500 can be controlled by the tracking mode (S130).

Next, according to the entry timing of the proximity temperature measurement unit 500 determined by the tracking mode 160 , the proximity temperature measurement unit 500 horizontally moves on the traveling platform 100 to measure the proximity temperature of the hot-rolled steel sheet (S). to start (S140). While measuring the proximity temperature, the measured value of the proximity temperature of the upper side of the hot-rolled steel sheet (S) in real time is transmitted to the control member through the proximity temperature measurement control module 7, and the temperature control unit 1 is the temperature distribution measuring unit 400 By comparing the temperature distribution measurement value transmitted from the proximity temperature measurement value, it is possible to control the water cooling member 300 through the control member. For this reason, the control member includes the height of the water cooling member 300 and the cooling water 202 so that the deviation between the surface temperature distribution measured by the temperature distribution measuring unit 400 and the surface temperature measured by the proximity temperature measuring unit 500 is minimized. A hot-rolled steel sheet made of uniform steel components can be manufactured by controlling the flow rate, water pressure, etc. of Even when the proximity temperature is measured, the tracking mode (S160) is maintained, and in case of an abnormality, an emergency evacuation can be performed by an emergency evacuation command (S170). For example, if an abnormal situation occurs after passing the tip of a hot-rolled steel sheet before passing through the tail end, or an abnormal factor is found during the process, emergency evacuation can be performed through the transfer control unit 3 or the manual control unit 5. have.

Next, when the evacuation time of the set measurement section comes, the proximity temperature measuring unit 500 moves horizontally by the measurement end command to evacuate and ends the proximity temperature measurement (S150). In the case of the evacuation movement of the proximity temperature measuring unit 500 , it may be set according to the interlocking condition with the winder 700 or the thickness condition of the hot-rolled steel sheet S.

For example, the proximity temperature measuring unit 500 enters and retreats on the traveling platform 100 according to the front end and the tail end of the hot-rolled steel sheet (S) set according to the thickness of the writing input to the control material, The proximity temperature measuring unit 500 enters the midpoint of the driving platform when the front end region passes the midpoint of the driving platform 100 , and when the tail end region moves to the entry section of the driving platform, the hot-rolled steel sheet It may be to evacuate to the outer part of (S).

Referring to FIG. 10 , in the tracking mode 160 of FIG. 9 , first, the transfer control unit 3 calculates the movement distance per second of the traveling table 100 from the rotational speed of the roll of the finishing rolling device 600 ( S161 ) ), it is possible to input the thickness of the hot-rolled steel sheet (S) moving on the running table (100) (S162).

When the moving speed of the traveling platform 100 and the thickness of the hot-rolled steel sheet S are input through the above process, the leading and trailing ends of the hot-rolled steel sheet S to be moved to the traveling platform are set due to the information entered in the transfer control unit 3 can be (S163).

When the hot-rolled steel sheet S is transferred beyond the set tip end position (S164), the proximity temperature measuring unit 500 may advance (S165) to enter the midpoint of the traveling platform 100.

Next, the proximity temperature measuring unit 500 may measure the proximity temperature of the hot-rolled steel sheet (S) (S166). That is, the proximity temperature of the hot-rolled steel sheet (S) is measured in real time in the measurement section between the front end and the tail end set in step S163, and the measured value can be transmitted to the control material.

In addition, when the hot-rolled steel sheet S is transported beyond the set position of the tail end set in step S163 (S167), the proximity temperature measuring unit 500 may move backward and evacuate from the traveling platform 100 (S168). .

The proximity temperature measuring unit 500 enters the middle point of the traveling table 100 by the load forming signal of the winder 700 located at one end of the conveying member, and finishing rolling located at the other end of the conveying member. One or more of the rolls of the device 600 may be evacuated to the outer side of the traveling platform 100 by an unloading signal. That is, the set position of the front end and the set position of the tail end together with the moving speed of the traveling table 100 and the input thickness of the hot-rolled steel sheet S are loaded by the winder 700 and the unloading signal of the finishing rolling device 600 by can be set.

The shape of the hot-rolled steel sheet (S), that is, the hot-rolled strip, may not always maintain the same shape at the tip and tail ends as shown in FIG. S1) or a double wave loop (S2) may be generated. In addition, the wave may be generated in various shapes, respectively, in the form of a long wave, a short wave, or a long and short wave S3. While the winding tension is formed by the operation of the winding machine 700 and the finishing rolling device 600, the strip is flat and there is no problem. (S5), short break height (S6), etc., can pass through the running platform 100, which may cause a physical collision with the proximity temperature measurement unit 500 during temperature measurement. Therefore, it may be very important to set the operation timing of the entry and retreat of the proximity temperature measuring unit 500 for the tip and tail ends of the hot-rolled steel sheet (S).

When the front end of the hot-rolled steel sheet (S) is loaded into the winder 700 and a load forming signal is generated, that is, when a tension load is formed, by controlling the proximity temperature measuring unit 500 to move horizontally and advance, the wave at the tip of the strip Collision with the shape can be avoided. In addition, at the tail end of the hot-rolled steel sheet (S), by the unloading signal of one or more of the rolls of the finishing rolling device 600, that is, the tail end of the hot-rolled steel sheet moves backward before all exiting the finishing rolling device 600 to prevent a collision. can be controlled to avoid.

Furthermore, when an emergency stop situation occurs, as soon as an emergency signal is detected to prevent a collision between the hot-rolled steel sheet S on the driving platform 100 and the proximity temperature measuring unit 500 and damage resulting therefrom, the An evacuation order may be issued. In addition, when the measurement judgment is abnormal, the driver's discretionary judgment information can be provided at the same time as an alarm is generated.

When the hot-rolled steel sheet (S) is a heavy material, a wave wave height or loop cannot be physically generated, so the horizontal forward and backward operations of the proximity temperature measuring unit 500 may be controlled by the tracking mode.

Therefore, due to the control process as described above, it is possible to differentiate the start and end times of temperature measurement for each speed according to the thickness of the hot-rolled steel sheet (S), and a combination of various signals that may occur during the water cooling and winding process of the hot-rolled steel sheet (S). It has the advantage of being able to perform quick and accurate control through

11, (a) is a thin material, (B) is a hot-rolled steel sheet of a heavy material, it can be seen that as the thickness of the hot-rolled steel sheet (S) increases, the proximity temperature measurement period of the hot-rolled steel sheet becomes longer. When measuring the temperature of the hot-rolled steel sheet (S) with the proximity temperature measuring unit 500, due to the above-described tracking mode, the proximity temperature of the hot-rolled steel sheet (S) is measured in the order of standby, measurement, and standby. It can be seen that the waiting time before and after the measurement of the thin material is longer than the waiting time before and after the measurement of the heavy material due to the characteristics of the tail end. That is, it can be seen that the collision avoidance control of the proximity temperature measuring unit 500 according to the thickness of the hot-rolled steel sheet S is performed. Therefore, it is possible to prevent collision with the hot-rolled steel sheet (S), which may occur during the temperature measurement process of the hot-rolled steel sheet (S), by controlling the temperature measurement entry and retreat points of the proximity temperature measuring unit ( 500 ).

In addition, since the main control of collision avoidance of the proximity temperature measurement unit 500 is performed and the temperature proximity measurement of the hot-rolled steel sheet (S) can be performed as much as possible, the cooling system of the hot-rolled steel sheet according to the embodiment of the present invention is the temperature measuring member. By having the proximity temperature measuring unit 500, the surface temperature of the hot-rolled steel sheet (S) moving on the traveling table 100 of the transfer member is measured at a close distance, and the hot-rolled steel sheet measured by the temperature distribution measuring unit 400 ( The temperature distribution of S) can be verified, and thus, the hot-rolled steel sheet S can be cooled to minimize the error of the surface temperature, and thus a hot-rolled steel sheet made of a uniform steel component can be manufactured.

In the above description, various embodiments of the present invention have been presented and described, but the present invention is not necessarily limited thereto. It will be readily appreciated that branch substitutions, transformations and alterations are possible.

One; temperature control unit
3; transfer control unit
5; manual control unit
7; Proximity temperature measurement control module
100; steering wheel
200; coolant reservoir
300; water cooling element
400; temperature distribution measuring unit,
500; proximity temperature measurement unit,
510; temperature measurement module
520; horizontal conveyor
530; fixture
540; shoulder support module
550; Horizontal conveyor drive device
600; finishing rolling machine,
700; winder
S; hot rolled steel

Claims (6)

In the cooling control system of a hot-rolled steel sheet consisting of a transfer member, a water cooling member, a temperature measuring member and a control member,
The temperature measuring member includes at least one temperature distribution measuring unit positioned on one side of the water cooling member and measuring a temperature distribution in the width direction of the hot-rolled steel sheet moving the traveling target of the conveying member, and the hot-rolled steel sheet. A proximity temperature measurement unit for verifying the measured temperature distribution by measuring the proximity temperature,
The proximity temperature measuring unit moves horizontally at a predetermined height to measure the proximity temperature of the hot-rolled steel sheet above the midpoint of the traveling table, and a measurement section is set according to the thickness or feed rate of the hot-rolled steel sheet, and one end of the conveying member It enters the middle point of the traveling platform by the load forming signal of the winding machine located in
The proximity temperature measurement unit returns the proximity temperature measurement value measured in real time while the hot-rolled steel sheet is running to the control member, and the control member is configured to minimize the deviation between the proximity temperature measurement value and the surface temperature distribution measured by the temperature distribution measurement unit. Cooling the hot-rolled steel sheet by controlling the height of the cooling member, the flow rate and water pressure of the cooling water,
The proximity temperature measurement unit includes a temperature measurement module, a horizontal transfer table for horizontally moving the temperature measurement module, a fixed base vertically connected to one end of the horizontal transfer table and mounted at one end of the temperature measurement module, and the horizontal transfer unit. Provided with a transmission pole and a proximity temperature measurement control module for controlling the temperature measurement module, further comprising a shoulder support module coupled to the assembly structure of the cooling water storage tank and the water cooling member to support the horizontal transport platform,
In the shoulder support module, a roller-shaped wheel is assembled therein, and the horizontal transporter moves horizontally by sliding of the wheel,
The proximity temperature measuring unit enters and retreats on the traveling platform according to the tip and the trailing end of the hot-rolled steel sheet set according to the thickness of the writing input to the control material, and the proximity temperature measurement unit is the tip region of the traveling platform at a midpoint The cooling control system of a hot-rolled steel sheet, characterized in that it enters the middle point of the traveling platform when passing through, and retreats to the outer side of the hot-rolled sheet when the tail end region moves to the entry section of the traveling platform. delete The method of claim 1,
The control member includes a transfer control unit for controlling the transfer speed or tension of the hot-rolled steel sheet, a temperature control unit connected to the temperature measuring member and the water cooling member to control a temperature distribution state of the hot-rolled steel sheet, the transfer control unit or and a manual control unit directly controlled by a driver according to an abnormal signal or an emergency signal generated from the temperature control unit. The method of claim 1,
The control member sets the measurement section by performing a tracking mode at the same time as starting the operation of the cooling control system of the hot-rolled steel sheet, and controls the entry timing and the evacuation timing of the proximity temperature measuring unit to the traveling platform. A cooling control system for hot-rolled steel sheets. delete delete

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