TW201235123A - Apparatus for controlling hot rolling line - Google Patents

Abstract

This invention provides an apparatus for controlling hot rolling line capable of realizing a target rolling-required time and suppressing energy consumption amount. This apparatus includes an initial schedule calculation device calculating the flow rate of a cooling spray and a speed pattern of rolling speed, schedule modifying device modifying the flow rate of the cooling spray and modifying the speed pattern when a finish mill exit-side temperature can not reach a target value over the total length of a target rolled material only by modifying the flow rate of the cooling spray and when a speed change rate relevant to the speed pattern is inputted, a rolling time prediction device calculating a rolling-required time of the target rolled material by using the speed pattern, a rolling time adjusting device outputting a calculated speed change rate allowing the rolling-required time to be within a target rolling time to the schedule modifying device, and an energy consumption amount adjusting device outputting a calculated speed change rate, by which an energy consumption amount obtained by time-integration of the calculated rolling power by using the speed pattern becomes a minimum value, to the schedule modifying device.

Description

201235123 VI. Description of the Invention: [Technical Field to Which the Invention Is Ascribed] The present invention relates to a control arrangement for a hot rolling line for manufacturing a metal product. " [Prior Art] Generally, the 'hot rolling line system consists of: a heating furnace for heating the rolled material; a roughing mill for heating the rolled material (a roughing miu)* finishing mill; A cooling device for cooling the rolled material; and a coiler for winding the rolled and rolled material into a coil shape. The temperature history of the rolled material in the hot rolling line affects the properties (mechanical properties) of the milk-extruded material. Further, the temperature of the rolled material in the rolling treatment changes the hardness of the rolled product, which greatly affects the energy consumption required for the rolling treatment. Therefore, a thermometer is placed on the outlet side of the roughing mill of the hot rolling line, the inlet side of the finishing mill, and the outlet side of the finishing mill, and the temperature is measured. In order to achieve a desired material, the rolled material is adjusted to adjust the ambient temperature in the heating furnace to heat the rolled material. The "extraction interval" of the time until the rolled material is taken out from the heating furnace until the next rolled material is taken out from the heating furnace is determined by the operation conditions and the prediction of the transportation sequence to achieve the maximum production speed. For example, the extraction interval is determined as the shortest interval between the roll-rolled rolled material that has been rolled before and the subsequent rolled material that does not collide on the hot-working line. At this time, the flow rate of the cooling spray (hereinafter referred to as "ISC") between the rolling stands of the finishing mill (hereinafter referred to as "ISC") is adjusted, and the flow is carried out in the finishing mill. The rolling speed of the rolled web is determined for the entire length of the extruded web so that the temperature of the heated web at the exit side of the finishing machine is reached and maintained at the target temperature. As described above, in the rolling process of the rolled material, the rQlling schedule is planned in consideration of the material production of the product, and the hot rolling line is controlled accordingly. The temperature at the exit side of the finishing mill (hereinafter referred to as "fdt") is necessary to control the specified target value to ensure the material of the product. In addition, on the inlet side of the finishing mill, a phenomenon in which the temperature of the rolled product is lowered from the front end of the rolled product to the end is called "hermal rund"). Therefore, in order to maintain the FDT of the entire length of the rolled material at the target temperature, it is necessary to adjust the ISC flow rate while accelerating the entire length of the rolled material. On the other hand, in order to increase the production amount of the product, it is necessary to shorten the extraction interval of the rolled material. In order to shorten the extraction interval time, it is necessary to increase the rolling speed in the range where the rolled material does not collide with each other on the hot rolling line. However, in general, when the metal material is deformed, the stress (deformation resistance) required for deformation is increased as the deformation speed is the same even if the applied deformation is the same. Therefore, increasing the rolling speed increases the energy consumption required for rolling. Therefore, it is necessary to increase the rolling speed as much as possible within the range in which the FDT can be controlled to the target value, and it is necessary to reduce the rolling speed as much as possible to reduce the energy consumption. For the method of suppressing the energy consumption, there is a hot rolling line which is provided with a heating device before the finishing mill, and the maximum speed of the rolling by the finishing mill 5 322913 201235123 and the amount of the heating device are increased. A method of determining the maximum rolling speed of the finishing mill and the heating amount of the heating device has been proposed (refer to, for example, the patent document 然而 ° 'the method proposed in Patent Document 1 '1 does not take into consideration The problem of reducing the production volume caused by the reduction of the rolling speed. In addition, the method of predicting the calculation of the energy consumption amount has a method of predicting the rolling of each rolled product according to the actual working data of the rolling process. Time, and predicting the rolling time of each rolled material from the slab data in the heating furnace, predicting the rolling power of each rolled product according to the rolling processing amount, and predicting the rolling A method of extending the energy consumption of a factory has been proposed (refer to, for example, Patent Document 2). However, the method proposed in Patent Document 2 does not take into consideration the rolling speed change. [Prior Art] (Patent Document) Patent Document 1: Patent Document 2: Japanese Patent Application No. 3444267 (Japanese Patent Application Laid-Open No. Hei. No. Hei. Problem to be solved) In order to suppress the hot rolling as the purple θ, there is a time required for rolling and the consumption is reduced to reduce the dry stretching speed. When necessary, the extraction interval is determined by the method to ensure that the target production measure is achieved, although the target can be achieved. In terms of force, the increase in rolling speed is between I and the material, but there is energy consumption. 322913 6 201235123 The local moon clock is completed at the above problem, and its purpose is to provide rolling that can achieve the goal. A control device for a hot milk line which can reduce the time required and can suppress energy consumption. (Means for Solving the Problem) According to an aspect of the present invention, a control device for a hot work line is provided, wherein the hot rolling operation The wire system includes a heating furnace, a plurality of rolling stands having a continuous arrangement, and a finishing mill disposed between the plurality of drying frames, and the control device is provided with: There is operation information of a rolling schedule associated with a plurality of rolled materials to be rolled, and an extraction interval for extracting a plurality of rolled materials from the heating furnace is calculated. The calculation device calculates the target rolling time calculation device of the target rolling time of the target rolled material (which is one of the plurality of rolled materials) using the extraction interval time and the operation information 'based on the operation information The initial schedule calculation device for cooling the flow rate of the water sprayer and the speed pattern of the rolling speed of the rolled product to be rolled on the hot rolling line; correcting the flow rate of the cooling water sprayer and using only the cooling When the flow rate of the sprinkler is corrected so that the temperature at the exit side of the finishing mill is the target value over the entire length of the rolled product, and the speed change rate relating to the speed model is input, the schedule correction device for correcting the speed model is corrected. a rolling time prediction calculation device for calculating the time required for the rolling of the object to be rolled and rolled using the speed model; so that the time required for rolling is within the target rolling time In this way, the speed change rate is calculated, and the calculated speed change rate is output to the rolling time adjustment device of the schedule correction device; and the speed model is used to calculate the plurality of targets 7 322913 201235123 set on the hot rolling line. Rolling power, time-integrating the rolling power to obtain energy consumption, and calculating the speed change rate in such a manner that the energy consumption is minimized and outputting it to the energy consumption adjusting device of the scheduling correction device, Further, in the range of the rolling time required for the rolling, which is below the target rolling time, the control device for the flow rate and velocity model of the cooling water sprayer which minimizes the energy consumption is determined. (Effects of the Invention) According to the present invention, it is possible to provide a control device for a hot rolling line which can achieve the desired rolling time and can suppress the amount of energy consumption. [Embodiment] Hereinafter, first to fourth embodiments of the present invention will be described in detail with reference to the drawings. In the description of the following drawings, the same or similar parts are denoted by the same or similar symbols. In the embodiment shown in the present invention, the configuration and arrangement of the components of the present invention are not limited to the following. Embodiments of the present invention can be modified in various ways within the scope of the patent application. (First Embodiment) A control device 10 for a hot rolling line according to a first embodiment of the present invention is a control device for a hot rolling line 20 as shown in Fig. 1, and includes a working condition processing device 11 and an extraction interval. The calculation device 12, the target rolling time calculation device 13, the initial schedule calculation device 14, the schedule correction device 15, the rolling time prediction calculation device 16, the rolling time adjustment device 17, and the energy consumption amount adjustment device 18. 8 322913 201235123 The hot rolling line 20 controlled by the control device 10 is provided with a heating furnace, a finishing mill having a plurality of rolling stands continuously arranged, and a cooling water sprayer disposed between the plurality of rolling stands . Before describing the details of the control device 10, the hot rolling line 20 will be described with reference to Fig. 2 first. The hot rolling line 20 shown in Fig. 2 has a heating furnace 21, a roughing mill 23, a finishing machine 26, and a coiler 28. Fig. 2 shows a state in which the rolled material 1 has been taken out from the heating furnace 21. The rolled product 100 taken out from the heating furnace 21 is rolled by a reversible roughing machine 23. The roughing mill 23 usually has one to several rolling stands 'and reciprocating the rolled material 100 to pass through the roughing mill 23 several times' to roll it to the center of the target at the exit side of the roughing mill Strip thickness. Hereinafter, the term "passing the rolled frame 100 through the rolling stand of the roughing mill 23" is referred to as "pass". After rolling by the roughing mill 23, the rolled product 100 is transferred from the outlet side of the roughing machine 23 to the inlet side of the finishing mill 26, and the finishing mill 26 composed of, for example, 5 to 7 rolling stands 260 will be used. Rolling is carried out to the desired thickness of the product panel. In the rolling stand 260 of the finishing mill 26, a cooling water sprayer (ISC), which is omitted in Fig. 2 and not shown, is provided. Further, as shown in Fig. 2, a roughing mill inlet side descaler 22 is disposed on the inlet side of the roughing mill 23, and a finishing mill inlet side descaling device 25 is disposed on the inlet side of the finishing mill 26. Further, a coil box 24 is disposed in the transfer table region between the roughing mill 23 and the finishing mill 26. The rolled product taken out from the finishing mill 26 is cooled by a cooling device 27, and then wound up in a coil shape by a coiler 28. Cooling device 9 322913 201235123 2 7 is for example a water cooling device. In addition, the carrier of the rolled product 1 of the hot rolling line 20 is: a plurality of thermometers provided with a roughing mill outlet side thermometer 29, a finishing mill inlet temperature, a refiner outlet side thermometer 293, and the like. . These thermometers are used to measure the temperature of the stranded material 100 at each position of the hot rolling line 2(). Next, the control device 1A shown in Fig. 1 will be described. The work condition processing device 11 outputs the necessary = work condition PDI to the extraction interval calculation device 12 and the initial schedule calculation device 14 from the input job information. The job information is input to the control device 10 as a work command set to achieve a desired throughput, an operator input designated by the operator, and the like. The operation information includes a rolling process schedule for a plurality of rolled products for a predetermined rolling process, which is a target value including, for example, Fdt, a thickness of the product, a plate width, and a flat steel fed to the heating furnace 21. Information on the thickness of the slab, the width of the plate, the length, and the temperature extracted from the heating furnace 21. The extraction interval calculation device 12 separates the extraction interval time tEX of the rolled material 1 抽 which is sequentially extracted from the heating furnace 21 in accordance with the number of the materials to be processed and the total processing time PDI. The extraction interval time tEX is the time from the extraction of the heat exchanger 21 from the heating furnace 21 to the extraction of the next heat exchanger 21 from the heating furnace 21. The target rolling time calculation device 13' uses the extraction interval. The information on the rolling speed included in the time tEX and the operation information is calculated for the rolled material 100 scheduled to be processed on the hot rolling line 20, and the target rolling time tTar 0 322913 10 201235123 initial scheduling calculation device 14 is calculated. The initial value SV0 of the control reference value necessary for achieving the target thickness and the temperature of the rolled material at the exit side of the finishing mill is calculated based on the working condition PDI. Specifically, a roll gap necessary for rolling, a flow rate of a cooling water sprayer (ISC) disposed on the hot rolling line 20, and a transfer processing target on the hot rolling line 2 are calculated. The speed model of the rolling speed of the rolled web 100. The schedule correction device 15 corrects the flow rate of the ISC so that the entire length of the rolled material 1 达成 is reached at the target finishing mill exit temperature (target FDT). Further, if the correction of the flow rate of the ISC is not used to make the finishing mill side temperature (FDT) coincide with the target value over the entire length, the speed model of the rolling speed is corrected. Alternatively, when the speed change rate αν associated with the speed model of the rolling speed is input, the speed model of the rolling speed is corrected using the input speed change rate αν. The flow rate or velocity model of the corrected ISC is output to the hot rolling line 2 as a control reference value SV for controlling the hot rolling line 20. For example, the flow rate of the ISC is output to an actuator for adjusting the valve of the ISC disposed on the hot rolling line 2 to control the flow rate, and the speed model is output to the rolling stand for driving the finishing mill 26. 260 roller (r〇ii) driver. The rolling time prediction calculation device 16 calculates the time required to roll the rolled material 100 by using the speed model included in the control reference value SV determined by the schedule correction device 15. The rolling time adjustment device 17 compares the time required to be delayed by the rolling time prediction calculation device 16 and the target rolling time tTar calculated by the target zapping time calculation device 322913 11 201235123 1 3 . Then, the speed change rate αν of the dry extension speed is calculated so that the time required for rolling is trin within the target delay time tTar. The calculated speed change rate αν is output to the schedule correction device 15. The energy consumption amount adjusting device 18' calculates the rolling power at a plurality of calculation points set on the hot rolling line 20 based on the velocity model calculated by the scheduling correction device 15, and performs time on the calculated rolling power. Integrate to calculate the energy consumption. The rolling power is calculated by the driving current of the motor that drives the rolling stand. Further, when the amount of energy consumption can be reduced, the energy consumption amount adjusting device 18' calculates the speed change rate αν so as to minimize the energy consumption amount, and outputs it to the schedule correction device 15. As described above, the control device 10 shown in Fig. 1 determines the flow rate of the ISC and the method of minimizing the amount of energy consumption under the condition that the rolling required time trm is within the target rolling time tTar. A speed model of the rolling speed of the rolled product 100 conveyed on the hot rolling line 2 . Hereinafter, an example of a method of controlling the hot rolling line 20 by the control device 1A shown in Fig. 1 will be described with reference to Fig. 3. In Fig. 3, a flow chart 31 on the left side shows a calculation method of a rolling campaign. The "rolling operation period" is a unit of the rolled material to be continuously rolled, for example, a unit of the rolled material to be subjected to the rolling treatment before the hot rolling line 20 is replaced. The flow chart % on the right side in Fig. 3 shows the calculation method of one of the plurality of rolled products to be processed in the hot rolling line 20, that is, the object to be rolled 丨〇〇 [a]. The target rolled product 100[a] ' is a target for the flow rate and velocity model of isc, and is intended to be rolled at the a-th rolling process. 322913 12 201235123 First, the processing shown in flowchart 31 will be described. In step S311, the working conditions in the rolling operation period transmitted from the working condition processing device 11 are immediately input to the drawing device 12. In step S312, the extraction interval calculation means 12 calculates the extraction interval time tEx[a] based on the operation condition PDI. This extraction interval ^(5) is not determined according to the rolling schedule of each strip, but is determined according to the rolling operation period and the furnace operating conditions. The symbol [a] indicates the value (the same applies hereinafter) relating to the object to be rolled 1 〇〇 [a]. The extraction interval time tEx[a] is determined by the heating time of the rolled material 100 and the time of drawing into the heating furnace 21 or predicting that the heating furnace 21 is to be drawn, for example, when the heating time in the heating furnace 21 is determined. Determined. The extraction interval time tEx[a] of the object to be rolled and rolled material l〇〇[a] is the number of times P of the rolled-rolling operation period or the unrolled rolled material 1〇〇, and all the above-mentioned The target of the time required for the rolling of the rolled material (hereinafter referred to as "target total emulsion delay time") tTgt is calculated by the following formula (1): tEx[a] = tTgt/P+f(FDTa [a], SGF[a], dh[a], 1 [a]) ···(!) The second term on the right side of equation (1) is the correction term, which indicates that the target finishing mill has the n-side temperature FDTa , the classification of the material type SGF, the total rolling amount dh, and the length of the rolled material 1. The values of these parameters are predetermined. -(2) ...(3) The sum of the extraction interval time tEx[a] must be equal to the target total rolling time, so the relationship of the following equations (2) and (3) is satisfied: tigt = Σ tEx[ a] I(f(FDTa[a], SGF[a], dh[a], l[a]))) = 322913 13 201235123 In equations (2) and (3), Σ denotes from a=1 to P The sum of them. Next, in step S313, the target rolling time calculation means 13 calculates the target rolling time tTar. The target rolling time tTar is calculated for the rolled material during the rolling operation period. Hereinafter, a calculation method of the target rolling time tTar will be described. The target rolling time tTar[a] ' of the object to be rolled and rolled 100[a], which is scheduled to be rolled over at the ath, must be such that the object being rolled and rolled 100[a] will not be scheduled for the next rolling delay. The a+th rolled product 100[a+Ι] of the rolling process is caught up. Therefore, the target rolling time tTar[a] of the object to be rolled 丨00[a] is calculated according to the following formula (4): tTar[a] = tEX[a+l]+tR[a+l ] - (4) In the formula (4), 'tR[a] is the rolling mill start position arrival time of the finish rolling mill i〇〇[a]. The "finishing mill rolling start position arrival time" is the time at which the rolled product 100 [a] is taken out from the heating furnace 21 until it reaches the rolling mill start position. The "rolling mill rolling start position" can be arbitrarily set. However, for example, when the target rolled material l〇〇[a] is too close to the front rolled material 10(10)^, it is set in the object to be rolled. L〇〇[a] Standby position. The rolling mill start position arrival time tR[a] is expressed by the following formula (5): tR[a] = Σ tRr[n] [a]+Σ ΐτ[η] [a]+tTFN[a ] (5) In the formula (5), Σ represents the sum from n = 1 to NR. The NR system is the number of rolling stands of the roughing mill 23. Further, tRr[n] is the time required for rolling in the n-th rolling stand of the roughing mill 23, and tT[n] is the inlet-side transfer time of the n-th rolling stand of the roughing mill 23, The tm is the final rolling of the roughing mill 23, 322913 14 201235123. The finishing rolling start position is located closer to the upstream side of the hot rolling line 20 than the finishing mill 26. Therefore, the speed at which the roughing mill 23 upstream of the rolling mill start position is rolled or the speed at which the rolled material is conveyed is not affected by the temperature control. Therefore, at this stage, the finish rolling mill start position arrival time tR[a] can be accurately predicted. When the object to be rolled and rolled 1 〇〇 [a] is caught by the next rolled material in the middle of the rolling of the roughing mill 23, it is necessary to change the object to be rolled and rolled 1 〇〇 [a] or the next rolling. The rolling speed of the material. Therefore, in the mth rolling stand of the roughing mill 23, the following condition (6) must be satisfied:

ImtRr[n][a]+ImtT[n][a]^tEx[a+l]+Zm-itRr[n][a-fl] +

ImtT[n][a+l] (6) In the formula (6), Σ«« represents the sum from η=ι to m, and Σπ^ represents the sum from n=1 to m-Ι. The extraction interval time tEx[a] and the finish rolling start start> (the stand-up arrival time tR[a] of each of the rolled and rolled materials 1 calculated here are used in the dry extension time adjusting device 17 The rolling required time tno is compared with the target rolling time tTar. Up to this point, the processing shown in the flowchart 31 is completed. - As described above, the time point "the calculation shown in the flowchart 31 of the rolling operation period is performed" The calculation of the target rolling time tTar is performed in advance. In addition, when the author changes the milking speed or the extraction interval tEX by manual intervention, etc., the target milking time w must be recalculated. Flowchart l〇〇[a] Flowchart 32 322913 15 201235123 Execution of the calculation of the object being rolled and rolled 1〇〇[a], the second is rolling on the object In the previous arbitrary point entry==321, the initial schedule calculation device 14 receives the job bar from which the object sent from the job bar is rolled and turned off 3]. In step S322, the initial schedule calculation device 14 is based on the working condition. PDI and the age of the meter #. In the discharge #+, in order to achieve in the fine The target thickness on the exit side of the dryer and the temperature of the rolled and rolled material, and the required clearance, cooling water flow and rolled material are determined according to the operating conditions of the reduction line and the operator's input data. The finishing mill 26 receives the speed model in the rolling and the like. Fig. 4 shows the finishing mill scheduling calculation area which is the object of the schedule calculation relating to the finishing mill 26. In order to predict the object being rolled and rolled 1 〇〇 [ The temperature of a] takes into consideration the influence of the flow rate of the isc 265 disposed between the rolling stands of the finishing mill 26, and is performed by the initial scheduling calculation device 14 from the finishing mill inlet side thermometer 292 to the finishing mill exit side. The temperature drop of the thermometer 293 is calculated. At this time, due to the thermal slowdown or the acceleration/deceleration of the object to be rolled 100 [a], the target FDT is achieved at each position in the longitudinal direction of the object to be rolled. The flow rate of the necessary ISC 265 is different. Therefore, it is necessary to calculate the temperature drop one by one for any calculation point in the longitudinal direction of the object to be rolled 1 〇〇 [a]. The calculation point is hereinafter referred to as the "target point. Figure 5 (a) to (c) show the piece of rolled material Number and target point number. Figure 5 (a) shows the rolled material 100, the right end of the figure is the front end, and the left end of the figure 16 322913 201235123 is the end. In order to display the length direction of the rolled material 100 in an easy-to-understand manner. Any point that is imaginarily divided into the rolled material 100 at equal intervals is referred to as a sheet. Fig. 5(b) shows a fragment of the rolled material 100. For the sake of simplicity, the fragment number is from the The front end to the end end of the rolled web 100 are sequentially arranged. Figure 5 (c) shows the marked point number. The target point 0 to the tantalum is an important point in the selected rolling process. The target point is set to, for example, the bite point, the intermediate point where the rolling speed will be the maximum, and the end point where the temperature will be the lowest. In steps S323 to S325 of Fig. 3, the schedule correction means 15 calculates a flow rate and velocity model of the ISC 265 which can achieve the target FDT for the entire length of the object being rolled. In step S323, the schedule correction means 15 calculates the flow rate of the ISC 265 at which the target FDT can be achieved. To this end, the flow rate of the ISC 265 is changed to perform the temperature drop calculation' and the convergence calculation is performed in such a manner that the calculated FDT is compared with the target FDT. The details of the convergence calculation when the flow rate of the ISC 265 is changed will be described later. Even if the target FDT cannot be achieved even if the flow rate of the ISC 265 obtained by the above convergence calculation is applied, it is necessary to change the speed model of the rolling speed to achieve the target FDT. Specifically, if the target FDT cannot be reached at any of the target points when the flow rate of the ISC 265 is corrected, the schedule correction device 15 determines in step S324 that the target cannot be achieved for the entire length of the rolled material. FDT. At this time, in order to change the speed model to achieve the target FDT, the schedule correction device 15 corrects the speed model of the rolling speed in step S325. The details of the correction method of the speed model are described in 322913 17 201235123. After the speed model is corrected, the process returns to step S323, and the flow rate of the ISC 265 is recalculated using the used speed model. The steps are repeated until S325 until it is determined that the velocity model of the target FDT is achieved over the entire length of the object being rolled. Next, in step S326, the rolling time prediction calculation means 16 1 calculates the rolling required time trn [a] of the object to be rolled 100 [a]. The time required for rolling is determined by the following formula (7): trm[a] = tR[a]+tF[a] (7) In the formula (7), tF[a] is The rolling time required for the finishing end of the finishing mill 100 [a] to be separated from the finishing mill 26 (hereinafter referred to as "finishing mill rolling time") is started from the rolling mill starting position. In step S326, the time required to be rolled, trm[a], is calculated from the speed model corrected by the schedule correction means 15. As shown in the formula (7), the finish rolling mill start position arrival time calculated in accordance with the formula (5). The sum of the rolling time tF[a] of the rolling mill is the time trm[a] required for rolling. Then, in steps S327 to S329, the speed change rate αν is calculated so as to be within the target rolling time Wa by the time required for the rolling time adjustment and elongation. Between t = rs327 47 'determination of the rolling delay time calculated in step S326 322913 201235123 After the arrival time tR [a], the object to be rolled and rolled i 〇〇 [a] at the point of the rolling mill start position status. At this time, as long as the extraction interval time tEx[a+l] of the rolled material i〇〇[a+1] subjected to the treatment after the object is rolled and rolled 100[a] is larger than the object to be rolled 100 [corrected] When the extraction interval tEX[a] is small, the rolled material 1〇〇[&+1] is taken out from the heating furnace 21. Fig. 6(c) shows the state at the time when the finish rolling mill of the finishing mill rolling time "[a] is finished rolling and rolling mill i〇〇[a] is finished. The time required for rolling is tda In the target FDT, the object is rolled to the finishing position of the finishing mill without being caught by the next rolled material 100[a]. Therefore, the object is rolled and rolled. The sum of the rolling mill start position arrival time tR[a] and the finishing mill rolling time tF[a] is as long as the extraction interval tEx[a+1 is longer than the rolled material l〇〇[a+l] ] and the sum of the rolling mill start position arrival time tR[a+l] is small, that is, 'as long as the following formula (8) is satisfied: tR[a]+tF[a] (cur) S tEx [a+l]+tR[a+l]-deltaM (8) In the formula (8), deltaM represents the time of the margin, in order to prevent the rolled materials from being too close to each other in the hot rolling line 20. And a predetermined fixed value. Further, 'tF[a](cur) is the current value of the rolling mill rolling time tF[a]. If the condition of the formula (8) is satisfied, the process proceeds to step S330 to perform energy consumption. If the condition of equation (8) is not satisfied, In step S328 of Fig. 3, it is determined whether or not the flow rate and velocity model of the ISC 265 can be changed. If the change is possible, the speed change rate 〇 is calculated in step S329; v. Whether the flow rate and speed model of the isc 265 can be changed is Judgment is made based on the maximum flow rate of ISC 265 and the ability to drive the motor of 352913 19 201235123 to extend the frame 260. On the other hand, if the flow rate and velocity model of IS (: 265 cannot be changed in step S328, the rolling time adjustment is performed. The device 17 determines that the finish rolling mill rolling time tF[a] cannot be further changed. At this time, the speed model is not corrected, and the process proceeds to step S330. The speed change rate calculation of the above step S329 is performed. The speed change rate αν is calculated for the rolling speed in the finishing mill 26 which satisfies the formula (8). The new finishing mill rolling time tF[a](new) is calculated according to the following formula: tp[ a](new) = tEX[a+l ]+tR[a+l ]-tR[a]-deltaM (9) The rolling time adjusting device 17 compares the current value tF of the rolling mill rolling time [ a] (cur) and the target speed of the finishing mill rolling time, and are calculated by the following formula (10) Required speed change rate: av = Cix(tp[a](cur)/tF[a](new)) ".(10) In equation (10), C! is a constant determined by experience. The fixed value or the value in the table recorded in the database. After the speed change rate of the finishing mill speed is calculated in step S329, the speed model is corrected in step S325 using the speed change rate αν, and then in step S323. The correction calculation of the flow of the ISC 265 is performed. In this way, the speed model and the flow of the ISC 265 are corrected to achieve the target FDT. When the rolling required time trm[a] is within the target rolling time tTar[a] in step S327, or the flow rate and speed model of the isc 265 cannot be further changed in step S328, the process proceeds to step S33. Calculate the energy consumption required for the rolling of 322913 20 201235123 like the rolled material l〇〇[a]. The energy consumption amount adjusting means 18 calculates the energy consumption amount in steps S330 to S333 and calculates the speed change rate ?V necessary for minimizing the energy consumption amount. The calculation of the energy consumption amount in step S330 is performed by using the speed correction model calculated by the schedule correction device to calculate the rolling power at the target point (kW). The energy consumption amount adjusting device 18 calculates, using the calculated rolling power, that the object to be rolled material l〇〇[a] is bitten into the tail end of the object to be rolled material 100[a], that is, The energy consumption (kWh) of the entire length of the object to be rolled 100 [a]. The energy consumption amount EP ' necessary for rolling the object to be rolled 100 [a] is expressed by the following formula (11): ΕΡ = S S S{(l/3600)xSPWjWdt} (1)) In 11), S dt represents the time integral from t = 〇 to s. Here, s(sec) is the rolling time. In addition, Σ indicates the sum of all the rollings performed by the roughing mill 23 and the finishing mill 26, and Ej (kWh) is the energy consumption amount of the jth rolling, and the "jth rolling" is the pass of the roughing mill 23. Rolling of any of the rolling stands 1 to NP of (R[i] to r[Nrp]) and finishing mill 26 is intended. The rolling power Pffi(kw) of the formula (11) at the point i is calculated as follows:

Pwi - (1000xViXGi)/Ri + PffL〇SSi "·(12) Rolling speed Vi (m/s) of formula (12), roll torque Gi (kNm), roll radius Ri (mm), loss power pffLQSSi (kW) is a value calculated by the schedule correction device 15 or a value obtained empirically. 322913 21 201235123 Rolling power Pwi is as shown in the formula (12), and the rolling roll speed Vi and the roll torque Gi It varies proportionally. Figure 7 shows the change in rolling power Pffi in the length direction of the rolled material. The thick line A in Fig. 7 shows the change in rolling power Pwi, and the value between the points is linearly interpolated. The area E〇 to E4 respectively represent the energy consumption between the target points. The area indicated by the oblique line in Fig. 7 is the energy consumption. That is, the energy consumption is expressed by the following formula (13). S Pwi(t)dt = Σ {(Pwi+Pw(i+i))xSi/2} (13) In the formula (13), S dt represents the time integral from t=0 to s, and Σ denotes i= 0 is the sum of Μ. Μ is the final target point. In addition, Si represents the rolling time between the target points. This Si is calculated by means of the difference in speed. For example, when using ISC 265 to control FDT Subject The speed between the points changes at an equal acceleration according to the specified acceleration. Therefore, the rolling time Si is expressed by the following formula (14):

Si = 2Li / (Vm+Vi) (14) In the formula (14), Li is the distance between the points of the respective targets. After the calculation of the energy consumption amount in step S330, in step S331, the energy consumption amount adjusting device 18 determines whether or not the energy consumption amount can be reduced. When the rolling time adjustment device 17 previously determines that the rolling mill time of the finishing mill cannot be further changed, or determines that it is impossible to reduce the energy consumption amount in the calculation of the energy consumption amount that has just been completed, the energy consumption amount adjusting device 18 The speed change rate αν is not changed, and the schedule correction device 15 outputs the control reference value SV in step S334, and then ends the processing. On the other hand, if the amount of energy consumption can be reduced, it is determined in step S332 that the flow rate and velocity model of the ISC 265 can be changed. If the flow rate and velocity model of the ISC 265 can be changed, it is determined in step S333 whether or not the new speed change rate a v ° can be reduced or not, and is determined, for example, as described below. In general, energy consumption is reduced as long as the rolling speed is reduced. • This is because the deformation speed required for rolling is reduced, and the rolling load is reduced. On the other hand, when lubricating oil is applied between the roll of the rolling stand and the material to be rolled (lubrication dry), the thicker the rolling speed, the thicker the film thickness of the lubricating oil. The amount of heat generated by the friction between the strands is reduced, and the energy consumption of the hot rolling line is reduced. In general, the influence of the former is large. Therefore, in the calculation of the first energy consumption amount, the speed change rate αν is determined toward the direction in which the rolling speed is lowered, and then used in the calculation of the second and subsequent energy consumption amounts. The speed change rate α V and the previous and current energy consumption calculation results are calculated, and the influence coefficient is calculated as follows. The calculation of the first energy consumption amount is determined as shown in the equation (15), and the speed change rate αν is determined in the direction in which the zhayan fan is lowered (. (4): a V(OId) = C2 (15) (15) In 'C2 is a constant, which is a fixed value or a value in the table of the database. The C2 system is smaller than 1.0. The calculation of the second and subsequent energy consumption is the comparison speed change rate. α v, and the previously calculated energy consumption amount Ep(〇id) and the energy consumption amount Ep(new) calculated this time, and the influence is calculated by the following equations (16) and (17) 23 322913 201235123 Coefficient: (θΕ/3a v)(new) = (EP(new)-Ep(〇丨d))/( av(〇id)-1) (16) a V(„ew) = l-Ca/ OE/aav)(new)XI Ep(new)-Ep(old) | (17) The difference between the previous and current energy consumption is small, that is, when the following formula (18) is satisfied, or the speed is changed When the rate α V is small, that is, when the following formula (19) is satisfied, it is determined that the energy consumption cannot be reduced. At this time, in the calculation of the next energy consumption amount, it is determined in step S331 that the energy consumption cannot be reduced. And then control in step S334 The reference value SV is output. | Ep(new)-Ep(〇id) | < 〇4 ...(18) I. CL V(〇ld)-l | <〇5 ...(19) where 'C3, C4 C5 is a constant obtained by experience, which is a fixed value or a value in a table of the database, etc. The calculated speed change rate av (nei〇, the speed model is corrected in step S325, and then corrected in step S323. The flow rate of ISC 265. By this, the speed model and ISC which can minimize the energy consumption under the condition that the FDT of the rolled material 100 can be maintained at the target temperature and can be minimized within the target rolling time tTar can be determined. The flow rate of 265 has been completed. Here, the processing shown in the flowchart 32 is completed. Here, an example of the convergence calculation when the flow rate of the ISC 265 is changed in step S323 of Fig. 3 will be described with reference to Fig. 8. In the flowchart, i denotes the number of the target point, ns is the smallest number of the point number as the target of the calculation object, and ne is the largest number. In addition, j denotes the number of the rolling stand 260 of the finishing mill 26, and finally rolls. The extension rack number is 322913 24 201235123

Nf. In steps S600 to S613 shown in Fig. 8, the flow rate of the ISC 265 is changed to make the FDT the target FDT for all the points of the target points ns to ne. In step S601, the information of the target point i necessary for the calculation of the FDT is read in. The necessary information is at least the inlet side temperature FETi of the finishing mill, the size and temperature distribution of the rolled material 100. These data are used when the calculation is used, and the predicted value is used when not calculated. In steps S602 to S611, the flow rate of the ISC 265 is corrected so that each of the target points calculates the temperature FDTVal within the allowable value of the target FDT. First, 'in step S602, the initial schedule calculation means 14 performs the slave configuration. The temperature drop of the finishing mill inlet side thermometer position of the finishing mill inlet side thermometer 292 to the inlet side of the first rolling stand of the finishing mill 26 is calculated. Then, in steps S603 to S607, from the first rolling stand 260 [1] of the finishing mill 26 to the final rolling stand 260 [NF], the rolling frame exit of each rolling stand is calculated. Side temperature SDJ and rolling stand inlet side temperature SEJ. The exit side temperature SDJ of the rolling stand is the amount of temperature drop caused by the contact between the rolled material 100 and the rolling stand 260, and the temperature rise caused by the processing heat and frictional heat accompanying the rolling. Calculated in consideration. In step S606, the temperature drop of the isc 265 between the rolling stands of the finishing mill %, the heat loss caused by heat transfer to the atmosphere, and the radiant heat incident on the atmosphere are taken into account. . In step S608, the calculated temperature FDTieal of the FDT at the thermometer position on the exit side of the finishing mill is calculated. 322913 25 201235123

- In step S609, it is judged whether or not the calculated temperature is within the value of the target FDT. If the temperature sail is calculated to be within the allowable value of the target blue, then the month j proceeds to step S612. If not all the calculations of the target point soil have been completed, the step j is made to increment the target point number in step S613, and the process returns to step S602. The calculation of all the target points i on the right has ended, and the processing is ended. On the other hand, if the calculated temperature FDTical is not within the allowable value of the FDT in step S609, the process proceeds to step s6i, and it is determined whether or not the grip amount of I% 265 can be changed. Whether the flow of the ISC 265 can be changed depends on the information that the operator can intervene, or whether the ISC 265 is within the limit. When the flow rate of the ISC 265 is variable, the amount of the ISC 265 is changed within the changeable range in step S611. Then, the process returns to step S602. The calculation of the temperature FDTVal at each target point can be obtained by performing the above-described 'temperature drop calculation from the thermometer position at the inlet of the finishing mill to the position of the micrometer at the outlet of the finishing mill. Next, the speed correction method in step S325 of Fig. 3 will be described with reference to Fig. 9. The method of correcting the ambiguity described below is a method of performing the limit value check of the rolling speed and the amount of change in the flow rate of the ISC 265 by the method of the speed change rate αν outputted by the rolling time adjustment device 17 or the energy consumption amount adjusting device 18. Limit check. The velocity model spl shown by a broken line in Fig. 9(a) is an example of a velocity model before correction. The horizontal axis of Fig. 9(a) is the time axis, indicating the respective time points. "FETdn" is the tip end of the rolled material 1 通过 through the finishing mill inlet side temperature 26 322913 201235123 292 time 'FDTon' is the time when the leading end of the rolled product 100 passes through the finishing mill exit side thermometer 293, "fDToff The time when the trailing end of the rolled product 100 passes through the finish rolling mill exit side thermometer 293, the "winding machine ον" is the time when the leading end of the rolled product 100 reaches the coiler 28. First, the limit value check of the rolling speed is performed. Fig. 9(b) shows the velocity model before and after the speed change rate αν. When the speed change rate αν •• is given, the speed model is corrected by adding the speed change rate αν to the predicted speed model. The velocity model SP2 indicated by the solid line in Fig. 9(b) is a velocity model obtained by using the speed change rate αν. Next, the limit value check of the amount of change in the flow rate of the ISC 265 is performed. Here, the speed model SP2 using the speed change rate α ν shown in Fig. 9(b) is used to investigate the necessity of changing the speed model under the conditions of maximizing and minimizing the flow rate of the isc 265. The necessity of changing the speed model is based on the temperature drop calculation of each segment from the inlet side thermometer of the finishing mill to the exit side thermometer of the finishing mill. In Fig. 9(c), the FDTTg indicated by the solid line is the target FDT', and the FDTmax indicated by the broken line is the calculation result of the FDT under the condition that the flow rate of the ISC 265 is minimized, and the FDT_ is the maximum flow rate of the ISC 265. The calculation result of FDT under the condition. The horizontal axis of Fig. 9(c) is the position from the front end of each segment. In each segment, if FDTTg is between FDTmax and FDT·, it means that the target FDT can be achieved for the entire length of the rolled material by changing the flow rate of ISc 265. Therefore, under the condition that the flow rate of the ISC 265 is the smallest, if there is a segment in which the FDT is lower than the target temperature, the velocity model is made to have a velocity so that all the segments reach the target temperature. 27 322913 201235123 On the other hand, under the condition that ISC 265 has the highest flow rate, if there is a segment with FDT higher than the target temperature, the speed model should be made smaller so that all the segments reach the target temperature. Finally, the speed model is corrected so that the set rolling speed is within the limit of the rolling speed. In Fig. 9(d), Smx indicated by a broken line is the upper limit of the rolling speed, and Srmin is the lower limit of the rolling speed. The speed model is corrected in such a manner that the rolling speed at which the rolled web 100 reaches the coiler 28 does not exceed the sheet speed limit determined by the idling limit of the coiler 28. When the coiler 28 is reached, the speed model is corrected so that the rolling speed does not exceed the rolling speed limit value determined by the rotational speed limit value of the motor that drives the rolling stand. In addition, when the limit value of the speed of the final rolling stand exiting the finishing mill 26 at the trailing end of the rolled product 1 has been determined, the speed model is corrected in such a manner that the rolling speed does not exceed the limit value. . After correcting the velocity model in the above order, the correction calculation of the flow rate of the ISC 265 in the step S323 of FIG. 3 is performed, and the velocity model and the flow rate at which the target finishing mill exit temperature is reached for the entire length of the rolled material 100 are determined. As described above, the control device 10' according to the first embodiment of the present invention determines the flow rate of the ISC 265 and the flow rate of the finishing mill on the outlet side of the entire length of the rolled material 100. The speed model of the rolled material 100 is accurately calculated from the determined speed model to calculate the rolling time trm. Then, the flow rate of the ISC 265 is corrected by the time required for the calculated rolling delay to be calculated within the range of tTar calculated according to the operation instruction related to the production amount or the input information of the operator. And the speed model of the rolled material 100. Then, using the velocity model to calculate the rolling power at a plurality of points, and time-integrating the rolling power calculated in § ten, the energy consumption required for the rolling is correctly calculated. The flow rate and velocity model of the ISC 265 is determined by the way in which the energy consumption is minimized within the target rolling time tTar. Therefore, according to the control device 1 shown in Fig. 1, the time required for the target rolling can be achieved and the amount of energy consumption of the hot rolling line 2 can be suppressed. (Second Embodiment) Fig. 10 is a flowchart for explaining a method of determining the extraction interval time according to the second embodiment by the control device 10 of the hot rolling line 20 shown in Fig. 1. First, in step S1010, as in the method described with reference to the flowchart 31 of Fig. 3, the calculation of the rolling operation period in which the total number of the rolled products 1 is P is performed. Next, in steps S1020 to S1140, the following calculation is performed in accordance with the rolling sequence for the rolled material 1〇〇[1] to 1〇〇[Ρ-1] in the rolling operation period. In step S1030, the extraction interval time tEx [a] of the rolled product l[a] that has been calculated and the extraction interval time tEx[a+l] of the rolled material 100 [a+1] are Combine as the first extraction interval combination. In step S1040, the energy consumption amount adjusting device 18 uses the extraction interval time tEx[a] and the extraction interval time tEX[a+l] for the rolled material l〇〇[a] and the rolled material l〇〇[ a+l], the calculation of the energy consumption amount described with reference to the flowchart 32 of Fig. 3 is performed, and the energy consumption amounts Ep[a], 29 322913 201235123 EP[a+l] are respectively calculated. Then, in step sl5〇, the sum of the energy consumption Ep[a] and the energy consumption amount EP[a+i] is calculated as follows:

Ptot = Ep[a]+ Ep[a+1] (20) Next, in step S1060, the extraction interval time tEX[a] of the rolled material 100[a] is reduced by a small time to be rolled. The extraction interval tEx[a+l] of the material 1〇〇[a+1] is increased by a small time At : ϊεχ [a] = tEx[a]-At ...(21) tExsu[a+l] = tEx[a+ l] + At ... (22) Δ t is a minute time of, for example, 1 to 5 (sec). The combination of the extraction interval time |||;|, _^strict [£1+1] represented by the equations (21) and (22) is used as the second extraction interval combination. In step S1070, 'the extraction interval time tExsu[a], hx u[a+l] is used, and the reference is made to the rolled material i〇〇[a] and the rolled material 1〇〇[a+1]. The flowchart of FIG. 3 illustrates the calculation of the energy consumption amount, and calculates the energy consumption amounts EPsu[a] and EPsu[a+l], respectively. Then, in step sl8〇, the sum of the energy consumption amount EPsu[a] and the energy consumption amount Ep, a+1] is calculated. Pt〇tsu:

Pt〇tsu = Epsu[a]+Epsu[a+1] (23) Next, in step S1090, 'the extraction interval time tEx[a] of the rolled material loo[a] is increased by a small time Δt' Decrease the extraction interval time tEx[a+l] of the rolled material i〇〇[a+1] by a small time Δ1:: tE^AD[a] = tEX[a] + At ...(24) tE' D[a+l] = tEx[a+l]-^t (25) The extraction interval time represented by the equations (24) and (25) is tExAD[a], 322913 30 201235123 hxAD[a+l] The combination is used as the third extraction interval combination. In the step siioo, the extraction interval time tEXAD[a], tExAD[a+l] is used, and the reference is made to the rolled material 1()〇[a] and the rolled material i〇〇[a+1]. The flow chart 32 of Fig. 3 illustrates the calculation of the energy consumption amount, and outputs the consumption amounts EpAD[a] and EpAD[a+l], respectively. Then, in the step sili〇, the sum of the energy consumption amount EPAD[a] and the energy consumption amount EPAD[a+l] is calculated. D AD · Γ tot · P-AD = EpAD[a]+EpAD[a+l] ... (10)) In step S1120, the sum of energy consumption amounts Ptc > t, Pt is employed. Strict, Pt. The combination of the extraction intervals when the energy consumption is the smallest, that is, any combination of the first and second extraction interval times. The flow and velocity models of the ISC 265 are determined using the combination of extraction intervals used. Depending on the combination of the extraction intervals, for example, the rolled material 100 [a+l] to be processed next will be hot-rolled because of the treatment of the preceding rolled material l〇〇[a]. The case where the line 20 is stopped. Therefore, there is a problem that the rolled material 100 [a + l] is cooled due to the stop time or the like. However, according to the above-described method of determining the extraction interval time, the most suitable combination of the extraction interval times can be employed. As described above, the method of determining the extraction interval time described with reference to Fig. 1 does not change the total extraction interval time of the entire dried material 1〇〇. Therefore, it is possible to determine the extraction interval time for reducing the total energy consumption of the predetermined rolled material when the production amount is secured. Except for the above, it is substantially the same as the first embodiment, and the repeated description is omitted here. (Third Embodiment) The extraction interval tEX can be calculated using the following equation (27) in addition to the equation (丨): tEx = ΐτ8ΐ/Ρ+ χ (dh)(dh[a]~dhav) + χ (l)(l[a]-lav)^ X (FDTa)(FDTa[a]-FDTaAv)+^ (Rp(G〇)(Rp(GC[a])-

Rp(GC)av) (27) In the formula (27), dh is the rolling amount 'l is the length of the rolled product, FDTa is the target FDT, and GC is the material type code. The value of the subscript of AV is indicated in each item, and represents the average value of all the rolled products that are scheduled. The function RP() calculates the number of rolling passes of the roughing mill 23 based on the material type code. In addition, the 'function χ () is a change in the time t required for the rolling of the change with respect to χ: % (x) = dt / dx (28), that is, in the control device of the third embodiment of the present invention The extraction interval calculation means 12 calculates the average rolling amount dhav, the average rolled length lav, and the average finishing mill exit side temperature FDTaav of all the objects to be processed which are to be processed. Then, the difference between the straight dh[a] and the average rolling amount dhav of the rolled object 1[a], the length of the rolled product 1[&], and the length lav of the flattened rolled material are used. And the difference between the target finishing mill exit side temperature FDTa[a] and the average finishing mill exit side temperature FDTaav to calculate the extraction interval time. According to the above method, it is considered that the rolling amount of each rolled material, the length of the rolled material, the target FDT, and the material type code are affected by the extraction interval time 322913 32 201235123. The sum of the extraction interval time ϊεχ expressed by the formula (27) is the target total rolling time tTgt, which satisfies the formula (2), formula (2), (formula (2), 3), so it is possible to determine the extraction interval time tEX at which the target total delay time tTgt is reached. Except for the above, the first embodiment is substantially the same as the above description, and the duplicated description is omitted here. (Fourth Embodiment) The control device 10 according to the fourth embodiment of the present invention shown in Fig. 11 is a point where the extraction interval calculation means 12 and the target rolling time calculation means 13 are not provided, and the first figure is shown. The control device 1 is different. The other configuration is the same as that of the first embodiment shown in Fig. 1. The fourth embodiment additionally considers the case where the target rolling time tTar is calculated by the external function such as the mi 11 pacing. The control device 1 shown in Fig. u controls the hot rolling line 2〇 by using the target rolling time tTar calculated by the external device 30 having the rolling mill rhythm function on the slit 21 side. The rolling apparatus s is used to compare the target rolling time W input from the external device with the rolling required by the dry-time prediction calculation device 16 (4) to allow the rolling time f to be at the target rolling. The speed change rate of the rolling speed is calculated by the square inside the time W. According to this speed change rate, the schedule correction "set 15 to correct the speed model." Then, when the energy consumption can be reduced, the control device 10 shown in Fig. 11 can be calculated in such a manner that the energy consumption of the energy consumption adjustment device #20 is minimized, and the device can be placed between the dry extensions. From the goal of rolling mill rhythm function input, 322913 33 201235123, the minimum energy consumption is basically the same, except that == This disclosure is intended to limit the inventors of the present invention. Translucent::: Part of the discussion and the understanding of the drawing. The examples and the heart and technology are collected in the form of various generations of money. Anyone who is not in the technical field will become an embodiment. Therefore, it is determined locally by the various inventions in the various types of drawings [not shown]. Fig. 2 is a schematic view showing a configuration of a control device according to a first embodiment of the present invention. Fig. 2 is a schematic view showing a configuration example of a hot rolling line. The =3 diagram is used to illustrate the flow of the method for controlling the reference value by using the first embodiment of the present invention. A schematic view of a configuration example of a hot rolling line shown in the drawing. The fifth point (a) to (c) are schematic diagrams showing the segment number and the 杈 number of the rolled material. Fig. 6 (a) to (c) are conceptual diagrams for explaining a method of determining the rolling time by the tanning device according to the first embodiment of the present invention. Variation of the second Fig. 7 is a schematic view showing the rolling in the longitudinal direction of the rolled material. Fig. 8 is a flow chart for explaining an example of convergence calculation of a case where the flow rate of the cooling sprinkler is changed by the control device 322913 34 201235123 of the first embodiment of the present invention. Fig. 9 (a) to (d) are conceptual diagrams for explaining an example of a speed correcting method by the control device according to the first embodiment of the present invention. Fig. 10 is a flow chart for explaining a method of determining the extraction interval by the control device of the second embodiment of the present invention. Fig. 11 is a schematic view showing the configuration of a control device according to a fourth embodiment of the present invention. [Description of main component symbols] 10 Control device 11 Working condition processing device 12 Extraction interval calculation device 13 Target rolling time calculation device 14 Initial scheduling calculation device 15 Schedule correction device 16 Rolling time prediction calculation device 17 Rolling time adjustment device 18 Energy consumption adjustment device 20 Hot rolling line 21 Heating furnace 22 Roughing mill inlet side descaling machine 23 Roughing mill 24 coiling box 25 Finishing mill side descaling machine 35 322913 201235123 26 27 28 30 100 260 265 291 292 293

Finishing mill Cooling device Coiler External device Rolled material Rolling stand ISC Roughing mill exit side thermometer Finishing mill inlet side thermometer Finishing mill exit side thermometer 36 322913

Claims (1)

201235123 VII. Patent application scope: 1. A control device for a hot rolling operation line, wherein the hot rolling operation line is provided with a heating furnace, and a plurality of rolling stands having a continuous arrangement and disposed in the plurality of rolling rolls The finishing mill for the cooling sprinkler between the racks is provided with: . Based on the operation information including the plurality of rolled materials and the rolling schedules scheduled to be rolled, Extracting interval calculation means for extracting a plurality of times of extraction of the rolled material from the heating furnace; and calculating one of the plurality of rolled products by using the extraction interval time and the operation information The target rolling time calculation device for the target rolling time of the rolled material; β calculates the flow θ of the cooling water sprayer based on the operation information as described above, and transports the object to be rolled and rolled over the hot rolling line The initial discharge calculation device of the speed model of the rolling speed; correcting the flow rate of the cooling water sprayer' and using only the flow rate of the aforementioned cooling water sprayer It is not possible to correct the schedule correction of the speed model when the finishing mill is not allowed to pass the length of the rolled material, the temperature is the target value, and the speed change rate of the speed model is input. a device for calculating a dry delay time calculation device for calculating a time required for the rolling of the rolled product by using the speed model; and calculating the speed change by the time required for the rolling delay within the target emulsion delay time Rate, and the calculated speed change 322913 1 201235123 rate is output to the rolling time adjustment device of the schedule correction device; and the speed model is used to calculate a plurality of target points set on the hot rolling line Rolling power, and integrating the rolling power for a time to obtain an energy consumption amount, and calculating the speed change rate so as to minimize the energy consumption amount, and outputting the same to the energy consumption adjusting device of the schedule correction device Moreover, the time required for the rolling is within the range of the aforementioned target rolling time to allow the aforementioned Determines the amount of consumption of the cooling flow and the velocity model is the smallest of the sprinkler embodiment. 2. In the control of the hot rolling line as described in the scope of application of the patent item 帛i, the extraction interval calculation device is calculated from the above-mentioned heating w1 and the Shenzhen double 7 hot hunting will be a broken rolling material After the extraction, the first extraction-time from the extraction of the first rolled material after the first dry extrusion, and the extraction of the second rolled material from the hot furnace to the second drying When the third rolled material of the material = is extracted to be the second second extraction interval, the energy consumption amount adjusting device combines the interval between the first extraction interval and the second extraction interval, respectively. The first extraction interval is increased by one time and the second extraction interval is decreased by the aforementioned-determined time, the interval interval is combined, and the first extraction is performed; the temple is described for a certain time and the second extraction is added. The third pumping (four) partition formed between the materials _ 322913 2 201235123 The first energy consuming stem consumed in the rolling process of the first rolled product and the rolling process in the second rolled product Second The sum of the energy consumption of the quantity consumption amount, and then using any combination of the foregoing first to third extraction interval time combinations in which the sum of the foregoing energy consumption amounts is the smallest to determine the flow rate of the aforementioned cooling water sprayer and the aforementioned velocity model . 3. The control device for the hot rolling line according to the first or second aspect of the invention, wherein the extraction interval calculation device uses the rolling amount of the rolled object to be rolled and the plurality of rolled products The difference between the average rolling amount, the difference between the length of the rolled product of the rolled object and the average rolled length of the plurality of rolled products, and the temperature at the exit side of the target finishing mill of the object to be rolled The extraction interval time is calculated from the difference between the average target finishing mill exit side temperatures of the plurality of rolled webs. 4. The control apparatus of the hot rolling line as described in the ninth aspect of the patent application, wherein the rolling time calculated by the rolling mill rhythm function is used as the target rolling time. 322913 3