WO2019021470A1

WO2019021470A1 - Coiling temperature control system

Info

Publication number: WO2019021470A1
Application number: PCT/JP2017/027505
Authority: WO
Inventors: 博文松井; 佐藤　芳明
Original assignee: 東芝三菱電機産業システム株式会社
Priority date: 2017-07-28
Filing date: 2017-07-28
Publication date: 2019-01-31
Also published as: CN110914004A; JPWO2019021470A1; KR102308379B1; KR20200035078A; JP6860075B2; CN110914004B

Abstract

A coiling temperature control system is provided with: a lower controller (6); a control network (4); and a CTC computer (10). The lower controller (6) acquires material information pertaining to material to be rolled (1), finishing setting information, and coiler setting information from a sheet rolling computer (5) via an information network (3). When target material to be rolled is upstream of a finishing mill (23), a tracking unit (11) for the CTC computer (10) inputs material information pertaining to the target material to be rolled, finishing setting information, and coiler setting information that is output to a control network (4) from the lower controller (6) in that order and outputs a setting calculation request. A CTC setting calculation unit (12) of the CTC computer (10) inputs the setting calculation request and performs setting calculations for calculating CTC setting information for cooling the target material to be rolled on the basis of the material information pertaining to the target material to be rolled, the finishing setting information, and the coiler setting information.

Description

Winding temperature control system

The present invention relates to a winding temperature control system, and more particularly to a winding temperature control system for a hot rolling line.

The hot rolling line is equipped with equipment such as a roughing mill, a finishing mill, a transport table, and a coiler. A material to be rolled such as a metal material rolled by a rough rolling mill and a finish rolling mill is cooled by a cooling device installed on a conveyance table, and wound by a coiler.

One of the quality controls in hot rolling is temperature control of a material to be rolled. The main control of the temperature of the material to be rolled is the temperature control on the finish side to control the temperature of the material on the finish rolling mill outlet side, and the winding temperature control to control the temperature of the material to be rolled in front of the coiler There is.

In winding temperature control (Coiling Temperature Control, hereinafter referred to as CTC), the purpose is to control the temperature of the material to be rolled before winding to the target temperature by adjusting the amount of water injection of the cooling device installed on the conveyance table is there. Materials such as strength and toughness of the material are determined by cooling from the finish rolling mill to the coiler. Therefore, take-up temperature control is important in terms of the material.

CTC setting information for winding temperature control is calculated by setting up calculation (set up calculation) in a winding temperature control computer (CTC computer). The setting calculation refers to numerically modeling a mathematically modeled portion of the rolling mill setting specifications that can be theoretically calculated.

In a conventional CTC computer, information necessary for CTC setting calculation (for example, material information, tracking information, finish setting information, coiler setting information, track record information, etc.) is a rolling computer that carries out setting calculation for a finishing mill or coiler. It is necessary to acquire it by a predetermined timing. Patent Document 1 discloses a configuration in which a rolling computer and a CTC computer are directly connected, and the CTC computer obtains in advance information necessary for CTC setting calculation from the rolling computer.

Japanese Patent Application Laid-Open No. 2003-39109

FIG. 8 is a diagram showing the configuration of a conventional take-up temperature control system. The CTC computer is directly connected by the rolling computer 5 and the information network 3, and directly receives information necessary for CTC setting calculation from the rolling computer 5.

The conventional CTC computer is introduced by the same manufacturer at the same time as the rolling computer when the hot rolling plant is constructed, and most of the manufacturers carry out testing and adjustment. Therefore, when updating the facilities to solve the problem of aging and obsolescence of the facilities after several to ten years, both computers are often updated at the same time, and the update cost becomes high. There was a problem of prolonging the renewal period.

In addition, the exchange of information between CTC computer and rolling computer is close, and it is necessary to rely on the manufacturer at the time of construction of the plant who is familiar with both computers, and the degree of freedom in selecting a manufacturer is low, which hinders cost reduction. There was a problem that.

In addition, even if only CTC computer is to be updated, the existing rolling computer is significant in order to maintain consistency of data contents, data format and transmission / reception timing of the data interface between the existing rolling computer and the CTC computer to be updated. There was a problem that needs to be remodeled. In addition, there are also cases where remodeling is difficult due to limitations of processing capacity of existing rolling mills and limitations of human resources who carry out remodeling work.

The present invention has been made to solve the problems as described above, and it is possible to update only the CTC computer without modifying the existing rolling computer, and to reduce the manufacturing cost and the test cost. It aims at providing a temperature control system.

In order to achieve the above object, the winding temperature control system is configured as follows. Winding temperature control systems are used in hot rolling lines. The hot rolling line has a finishing rolling mill for rolling a material to be rolled, a transport table provided with a cooling device for cooling the rolled material to be rolled, and a coiler for winding the cooled material to be rolled.

The winding temperature control system comprises a programmable logic controller, a winding temperature control computer (CTC computer), and a control network.

The programmable logic controller calculates the finish setting information for controlling the finish rolling mill and the coiler setting information for controlling the coiler, and from the rolling computer, via the information network, the material information and finish setting information on the material to be rolled And get the coiler setting information. The information network is a network different from the control network, and transmits data aperiodically.

The control network includes a plurality of nodes having common memories, and a programmable logic controller and another one connected to one node by synchronization of data on the common memories by periodic broadcast transmission among the plurality of nodes. Information is sent to and received from a take-up temperature control computer (CTC computer) connected to the node

The winding temperature control computer (CTC computer) includes a tracking unit and a CTC setting calculation unit, and calculates CTC setting information for controlling the cooling device. The tracking unit is configured to output the material information and finish setting information on the target rolled material output from the programmable logic controller to the control network when the target rolled material to be rolled temperature control is upstream of the finish rolling mill. The coiler setting information is sequentially input, and a setting calculation request is output. The CTC setting calculation unit is set to calculate the CTC setting information for cooling the target material to be rolled based on the material information on the target material to be rolled, the finish setting information and the coiler setting information by inputting the setting calculation request. Carry out the calculation.

In this way, the CTC computer can obtain the information necessary for CTC setting calculation from the programmable logic controller via the control network in which the control information flows periodically. According to such a configuration, since there is no direct relation between the CTC computer and the rolling computer, the degree of freedom in selecting a manufacturer is improved, and the CTC computer can be updated independently. If only CTC computers can be updated, the latest computers can be used in a short period of time with less equipment investment, and coil quality can be improved. In addition, the update times of the rolling calculator and the CTC computer can be set separately. Therefore, it is possible to systematically carry out the update work while avoiding concentration of work costs and work man-hours.

According to the winding temperature control system of the present embodiment, information necessary for CTC setting calculation can be obtained from the programmable logic controller, and the close connection between the CTC computer and the rolling computer can be eliminated. Therefore, only the CTC computer can be updated without modifying the existing rolling computer, and the manufacturing cost and the test cost can be reduced.

It is the schematic which shows the structure of a hot rolling line. FIG. 1 is a schematic view of a winding temperature control system according to a first embodiment. It is a figure for demonstrating the scan transmission in a control network. It is a figure for demonstrating the operation | movement of a winding temperature control system. FIG. 7 is a view showing a modification of the winding temperature control system according to the first embodiment. FIG. 7 is a view showing a modification of the winding temperature control system according to the first embodiment. It is a block diagram showing the example of hardware constitutions of the processing circuit which a CTC computer has. It is a figure which shows the structure of the conventional winding temperature control system.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same reference numerals are given to the elements common to the respective drawings, and the redundant description will be omitted.

Embodiment 1
(Hot rolling line)
FIG. 1 is a schematic view showing the configuration of a hot rolling line according to a first embodiment. In FIG. 1, a material to be rolled 1 such as a metal material is thinly stretched while being processed by the hot rolling line 2, and the size and temperature of the material are controlled to a desired target value. The hot rolling line 2 includes a heating furnace 21, a rough rolling mill 22, a finish rolling mill 23, a conveyance table 24, and a coiler 25 as main equipment.

The heating furnace 21 heats the material to be rolled 1. When leaving the heating furnace 21, the material to be rolled 1 is a block of metal shaped in a rectangular shape called a slab. A roughing mill 22 is provided downstream of the heating furnace 21. The rough rolling mill 22 is often configured of one to three. The roughing mill 22 rolls the work material 1 in the forward direction (upstream to downstream) and the reverse direction (downstream to upstream) a plurality of times.

The finish rolling mill 23 is provided downstream of the roughing mill 22. The finish rolling mill 23 includes a plurality of rolling stands, and rolls the material to be rolled 1 in one direction from upstream to downstream. Although seven stands are drawn in FIG. 1, the number of stands is not limited to this. A rolling stand has a rolling roll, a support roll, etc., and rolls the to-be-rolled material 1 by upper and lower rolling rolls. By the finish rolling, the final quality regarding the size of the thickness, width and the like of the material 1 to be rolled is determined.

The transport table 24 is provided downstream of the finishing mill 23, and is called a runout table (ROT). The conveyance table 24 has a structure which can convey the to-be-rolled material 1 by arranging and rotating many rolls. The transport table 24 is provided with a cooling device 241 for cooling the rolled material 1 that has been rolled. The cooling device 241 supplies water to the material to be rolled 1 rolled by the finish rolling mill 23 based on CTC setting information described later. The material to be rolled 1 is cooled by the cooling device 241 to a target temperature.

The coiler 25 is provided downstream of the transport table 24. The material to be rolled 1 cooled by the conveyance table 24 is wound around the coiler 25 while being guided downward by the pinch roll.

In addition, the hot rolling line 2 includes an FDT sensor 26 for measuring a finish rolling temperature (Finister Delivery Temperature) of the material 1 to be rolled on the outlet side of the finish rolling mill 23. In addition, an MT sensor 27 that measures the middle cooling temperature of the material to be rolled 1 at an intermediate position of the transfer table 24 is provided. The CT sensor 28 is provided on the outlet side of the transport table 24 and measures the coiling temperature of the material 1 to be rolled before winding. In addition, a speed sensor 29 that measures the rotational speed of the coiler 25 and a sensor 30 that measures the coil diameter are provided. In addition, various sensors such as a speed sensor (not shown) that measures the roll rotational speed of each rolling stand of the finishing mill 23 and a temperature sensor (not shown) that measures the ROT water temperature are provided.

(Winding temperature control system)
The winding temperature control system used for the hot rolling line 2 will be described with reference to FIG. FIG. 2 is a schematic view of a winding temperature control system according to Embodiment 1 of the present invention.

The take-up temperature control system includes an information network 3, a control network 4, a rolling calculator 5, a lower controller 6, an equipment 7, a cooling water spray valve 8, a computer IF unit 9, a take-up temperature control computer (hereinafter referred to as a CTC computer). ) Provided.

First, the information network 3 and the control network 4 will be described. The information network 3 communicates with a general network protocol (TCP / IP or UDP / IP) for transmitting packets. Transmission of the information network 3 is non-periodic data transmission, and transmits arbitrary data at arbitrary timing.

The control network 4 is a plant control network that achieves high reliability and real time performance. Specifically, the control network 4 is a network that can ensure the simultaneousness of control data by scan transmission (periodic broadcast transmission) by the common memory method. The control network 4 is a network capable of transmitting data at a high speed and in a constant cycle as compared with the information network 3.

The control network 4 includes a plurality of nodes (nodes A41 to D44). The node A 41 is connected to the lower controller 6, the node B 42 is connected to the computer IF unit 9 (in a broad sense, the CTC computer 10), the node C 43 is connected to the equipment 7, and the node D 44 is connected to the cooling water spray valve 8. The number of nodes is not limited to this.

FIG. 3 is a diagram for explaining scan transmission in the control network 4. As shown in FIG. 3, the plurality of nodes A41 to D44 respectively have common memories 410 to 440 having the same configuration. In each common memory, a storage area in which the output data of the lower controller 6 is written, a storage area in which the CTC setting information calculated by the CTC computer 10 is written, output data of the equipment 7 (outputs of drive device and various sensors described above Storage areas to which data is written are allocated so as not to overlap.

Each node has a broadcast transmission function for periodically transmitting data on the common memory managed by the node itself to all other nodes. For example, the node A 41 periodically broadcasts the data in the storage area where the output data of the lower controller 6 is written to the common memory 410 to all other nodes to synchronize the data on each common memory. Do. The control network 4 can perform scan transmission in a cycle of several msec.

As described above, in the control network 4, unlike the general message transmission / reception method, the storage position (address) of each data on the common memory is defined in advance, and each data can be referenced from each connected device. . Further, internal data is transmitted from the lower level controller 6 to the control network 4 so that the internal data of the lower level controller 6 can be monitored from the outside (for example, a data collection device), and devices connected to the control network 4 It is possible to monitor, save and search. The internal data includes material information to be described later, tracking information, finish setting information, coiler setting information, and performance information.

Returning to FIG. 2, the explanation will be continued. The rolling calculator 5 carries out setting calculation to calculate finish setting information and coiler setting information. The finish setting information is information obtained by calculating operation setting values for controlling the finish rolling mill 23 by design calculation. The coiler setting information is information obtained by calculating operation setting values for controlling the coiler 25 by setting calculation. The finish setting information, the coiler setting information, the material information, and the tracking information are transmitted to the lower controller 6 via the information network 3.

The lower controller 6 is a programmable logic controller. The lower-level controller 6 is connected to the rolling computer 5 via the information network 3 for transmitting data non-periodically, and is connected to the facility equipment 7 via the control network 4 in which control information flows in a constant cycle, The coolant spray valve 8 is connected to the computer IF device 9. In general, the lower level controller 6 is composed of a plurality of controllers for each control range and function. Communication and sharing of data among a plurality of controllers are performed via the control network 4.

The lower controller 6 acquires material information, tracking information, finish setting information, and coiler setting information on the material to be rolled 1 from the rolling calculator 5 via the information network 3. Further, the lower-level controller 6 outputs, to the control network 4, material information, tracking information, finish setting information, coiler setting information, and performance information on the material to be rolled 1.

The equipment 7 is, for example, a drive device of each rolling stand of the finish rolling mill 23 of FIG. 1, a drive device of the coiler 25, various sensors described above, and the like.

The cooling water spray valve 8 is a device that the cooling device 241 installed on the conveyance table 24 has. The cooling device 241 has a large number of cooling water spray valves 8, and the cooling water spray valves 8 are opened and closed based on CTC setting information. The CTC setting information is calculated by the CTC computer 10. In the CTC setting information, the ON (water injection) / OFF (water non-injection) state of each valve is set as the ROT valve pattern. The coolant spray valve 8 may be an open / close valve or a flow control valve.

The computer IF device 9 is an interface device for connecting the control network 4 and the CTC computer 10, and is broadly included in the CTC computer 10. The computer IF unit 9 calculates information necessary for calculating CTC setting information (material information on the material to be rolled 1, finish setting information, coiler setting information, tracking information, and performance information obtained from the various sensors described above), Input from the control network 4 and output to the CTC computer 10. Further, the computer IF unit 9 inputs the CTC setting information calculated by the CTC computer 10 and outputs the CTC setting information to the control network 4.

The CTC computer 10 is connected to the lower controller 6 via the computer IF unit 9 and the control network 4. The CTC computer 10 calculates CTC setting information for controlling the cooling device 241.

Next, the operation of the winding temperature control system will be described with reference to FIG. The CTC computer 10 according to the present embodiment includes various information (material information on the material to be rolled 1, finish setting information, coiler setting information, tracking information, and performance information obtained from the various sensors described above) necessary for CTC setting calculation. , The lower-level controller 6 via the control network 4.

The lower controller 6 outputs information necessary for CTC setting calculation to the control network 4 at the timing when various information is received from the rolling computer 5 via the information network 3.

The tracking information and the performance information are always output from the lower level controller 6 to the control network 4. The tracking unit 11 of the CTC computer 10 reads tracking information and performance information from the control network 4 for each control cycle.

Since the material information, finish setting information, and coiler setting information are updated in order, the tracking unit 11 reads the material information, finish setting information, and coiler setting information in order.

First, material information is output from the lower controller 6 to the control network 4 (1). The material information includes a number of control target values such as steel type, target rolling size (thickness, width, length) and target winding temperature. The material information is composed of data on a large number of items, and not all data of each node is synchronized in one control cycle, and each data arrives at different timings. Since old data are mixed until all data is overwritten, it is necessary for the CTC computer 10 to read in all data of the material information after it is complete. Therefore, a storage area to which a read command that is turned on when all the data of the material information is collected is assigned to the common memory (2). The tracking unit 11 confirms ON / OFF of the read command for each control cycle (3). The tracking unit 11 also tracks the current position of the material to be rolled 1 to be controlled (hereinafter referred to as the target material to be rolled), which is the target of winding temperature control, based on the tracking information. The tracking unit 11 reads the material information on the target material to be rolled at a timing when the read command is ON and the target material to be rolled is upstream of the entrance side of the finishing mill 23 (4).

Finish setting information is also read into the CTC computer 10 basically in the same manner as the material information. First, finish setting information is output from the lower controller 6 to the control network 4 (5). The finish setting information includes a large number of control target values such as the exit side plate thickness of each stand of the finish rolling mill 23 and the stand speed. The finish setting information is composed of data on a large number of items, and not all data of each node is synchronized in one control cycle, and each data arrives at different timings. Since old data are mixed until all data is overwritten, it is necessary for the CTC computer 10 to read all the data of the finish setting information after it is complete. Therefore, a storage area to which a read command to be turned on when all data of the finish setting information are collected is assigned to the common memory (6). The tracking unit 11 confirms ON / OFF of the read command for each control cycle (7). The tracking unit 11 sets the finish setting information on the target material to be rolled at a timing when the read command is ON, the target material to be rolled is upstream of the entrance side of the finishing mill 23, and the material information is already read. Read (8).

The coiler setting information is also read into the CTC computer 10 basically in the same procedure as the material information and the finish setting information. First, coiler setting information is output from the lower controller 6 to the control network 4 (9). The coiler setting information includes many control target values such as a lag rate and a lead rate of the coiler 25. The coiler setting information is composed of data related to a large number of items, and not all data of each node is synchronized in one control cycle, and each data arrives at different timings. Since old data is mixed until all data is overwritten, the CTC computer 10 needs to read all the data of the coiler setting information after it is complete. Therefore, a storage area to which a read command to be turned on when all data of the coiler setting information are collected is allocated to the common memory (10). The tracking unit 11 confirms ON / OFF of the read command every control cycle (11). The tracking unit 11 relates to the target to-be-rolled material at a timing when the read command is ON, and the target to-be-rolled material is upstream of the entrance side of the finishing mill 23, and the material information and finish setting information have been read. Read coiler setting information (12).

As described above, when the target rolled material is upstream of the finish rolling mill 23, the tracking unit 11 outputs the material information and finish setting information on the target rolled material output from the lower controller 6 to the control network 4 and the coiler. Input setting information in order. Thereafter, the tracking unit 11 outputs a setting calculation request.

The CTC setting calculation unit 12 inputs a setting calculation request, and calculates CTC setting information for cooling the target material to be rolled based on the material information on the target material to be rolled, the finish setting information and the coiler setting information. Perform setting calculation. The calculated CTC setting information includes the ROT valve pattern in which the ON (water injection) / OFF (water non-injection) state of each cooling water spray valve 8 is set. The CTC setting information is transmitted to the lower controller 6 and / or the cooling water spray valve 8 via the control network 4.

The computer IF unit 9 takes out the performance information from the control network 4 and transmits to the CTC computer 10 the temperature information, speed information and status information from the lower controller 6 and the various sensors described above. When the temperature information is an analog value, it is converted into a digital value by the computer IF unit 9. Further, since chattering may occur in the above-described temperature sensor, chattering check is performed in the computer IF device 9. Dynamic control of the CTC computer 10 is performed by pulse gate signals immediately below each temperature sensor. When there is no pulse gate signal, the computer IF device 9 calculates the movement distance from the material speed of the material to be rolled 1 at a constant cycle, performs material tracking immediately below each temperature sensor, and generates a pulse gate signal.

(effect)
As described above, according to the winding temperature control system of the present embodiment, the CTC computer 10 can lower the information necessary for CTC setting calculation via the control network 4 in which the control information flows in a fixed cycle. It can be obtained from the controller 6. According to such a configuration, since there is no direct relation between the CTC computer 10 and the rolling computer 5, the degree of freedom in selecting a manufacturer is improved, and the CTC computer can be updated independently. If only CTC computers can be updated, the latest computers can be used in a short period of time with less equipment investment, and coil quality can be improved. In addition, the update times of the rolling calculator and the CTC computer can be set separately. Therefore, it is possible to systematically carry out the update work while avoiding concentration of work costs and work man-hours.

Also, the lower-level controller 6 conventionally receives various information necessary for calculation of the winding temperature control from the rolling calculator 5, and the CTC computer can be increased by increasing the data transmission speed and capacity of the recent control network 4. Even if 10 receives various information from the lower controller 6, it does not affect the control of the plant at all.

Furthermore, various information necessary for calculation of the winding temperature control is assigned on an address of a common memory designed in advance on the control network 4 for data sharing and monitoring of data between the plurality of lower controllers 6 installed. It is designed to be constantly updated as the latest data. Therefore, even when transmitting information from the lower-level controller 6 to the CTC computer 10, there is no need to newly add or change the function, and there is very little new work.

As described above, even when only the CTC computer 10 is updated, the modification range of the existing rolling computer 5 and lower controller 6 can be minimized, so the reliability can be improved and the test adjustment period can be minimized. It becomes possible.

(Modification)
By the way, in the system of the first embodiment described above, the CTC computer 10 is connected to the control network 4 via the computer IF unit 9, but in the CTC computer 10 having high-performance processing capability, the control network 4 It is possible to incorporate interface functions with Therefore, as shown in FIG. 5, the function of the computer IF unit 9 may be packaged in the CTC computer 10.

Further, in the system of the first embodiment described above, the case where the CTC computer 10 obtains necessary information from the lower controller 6 has been described. By the way, with respect to some data such as rolling instruction information (PDI: Primary Data Information) that the existing rolling calculator 5 has obtained from a host computer (not shown), remodeling of the CTC computer 10 such as changing the communication destination is easy Therefore, it may be received from the rolling calculator 5 via the inter-computer communication path 20 (FIG. 6). The PDI data is data set by the host computer, and is configured by various preset data for rough rolling mills and finishing rolling mills to be controlled, data representing the rolling target specification of the material 1 to be rolled, etc. .

(Hardware configuration example)
The hardware configuration of the CTC computer 10 will be described with reference to FIG. FIG. 7 is a block diagram showing an example of the hardware configuration of the processing circuit of the CTC computer 10 of FIG. Each part of the CTC computer 10 shown in FIG. 4 shows a part of the function of the CTC computer 10, and each function is realized by a processing circuit. For example, the processing circuit is a computer including a CPU 101, a ROM 102, a RAM 103, an input / output interface 104, a system bus 105, an input device 106, a display device 107, and a storage 108.

The CPU 101 is a processing device that executes various arithmetic processes using programs and data stored in the ROM 102 and the RAM 103. The ROM 102 is a read-only storage device that stores a basic program for causing the computer to realize each function, an environment file, and the like. The RAM 103 is a main storage device that stores programs executed by the CPU 101 and data necessary for executing each program, and can perform high-speed reading and writing. The input / output interface 104 is a device that mediates connection between various hardware and the system bus 105. A system bus 105 is an information transmission path shared by the CPU 101, the ROM 102, the RAM 103, and the input / output interface 104.

Further, hardware such as an input device 106, a display device 107, and a storage 108 are connected to the input / output interface 104. The input device 106 is a device that processes an input by an operator, and is, for example, a keyboard or a mouse. The processing of each unit described above is executed with the input from the input device 106 as a starting point. The display device 107 is, for example, a display. The storage 108 is a large-capacity auxiliary storage device that stores programs and data, and is, for example, a hard disk drive or a non-volatile semiconductor memory.

As mentioned above, although embodiment of this invention was described, this invention is not limited to said embodiment, It can variously deform and implement in the range which does not deviate from the meaning of this invention.

1 material to be rolled 2 hot rolling line 3 information network 4 control network 5 rolling computer 6 subordinate controller (programmable logic controller)
7 Equipment 8 Cooling water spray valve 9 Computer IF device 10 CTC computer (winding temperature control computer)
11 Tracking part 12 CTC setting calculation part 20 Inter-computer communication path 21 Heating furnace 22 Rough rolling machine 23 Finishing rolling machine 24 Conveying table 25 Coiler 26 FDT sensor 27 MT sensor 28 CT sensor 29 Speed sensor 30 Sensor 41-44 Node A to node D
101 CPU (Central Processing Unit)
102 ROM (Read Only Memory)
103 RAM (Random Access Memory)
104 I / O interface 105 System bus 106 Input device 107 Display device 108 Storage 241 Cooling device 410 to 440 common memory

Claims

A hot rolling line having a finishing rolling mill for rolling a material to be rolled, a transport table provided with a cooling device for cooling the rolled material to be rolled, and a coiler for winding the cooled material to be rolled A winding temperature control system used,
From a rolling calculator which calculates finish setting information for controlling the finish rolling mill and coiler setting information for controlling the coiler, material information on the material to be rolled and the finish setting information via an information network A programmable logic controller for acquiring the coiler setting information;
A winding temperature control computer which calculates CTC setting information for controlling the cooling device;
The programmable logic controller connected to one node and another node have a plurality of nodes having common memory, and synchronization of data on the common memory by periodical broadcast transmission among the plurality of nodes A control network for transmitting and receiving information to and from the winding temperature control computer to be connected;
The winding temperature control computer
The material information and the finish setting on the target material to be rolled that are output from the programmable logic controller to the control network when the target material to be rolled which is a target of winding temperature control is upstream of the finish rolling mill. A tracking unit which sequentially inputs information and the coiler setting information and outputs a setting calculation request;
The setting calculation request is input, and the CTC setting information for cooling the target material to be rolled is calculated based on the material information on the target material to be rolled, the finish setting information, and the coiler setting information. CTC setting calculation unit that performs setting calculation;
A winding temperature control system comprising:
The winding temperature control computer and the rolling computer are not directly connected by the information network,
The winding temperature control system according to claim 1, characterized in that