TWI481452B - Apparatus for controlling hot rolling line - Google Patents

Description

熱軋作業線之控制裝置Hot rolling line control device

本發明係關於製造金屬製品之熱軋作業線之控制裝置。The present invention relates to a control device for a hot rolling line for manufacturing metal products.

通常，熱軋作業線係由：加熱被軋延材之加熱爐；軋延加熱過的被軋延材之粗軋機(roughing mill)及精軋機(finishing mill)；使被軋延材冷卻之冷卻裝置；以及將軋延後的被軋延材捲成線圈狀之捲取機所構成。Usually, the hot rolling line consists of: a heating furnace for heating the rolled material; a roughing mill for rolling the heated rolled product; and a finishing mill; cooling for cooling the rolled product a device; and a coiler that winds the rolled and rolled material after rolling into a coil shape.

在熱軋作業線中之被軋延材的溫度履歷，會對被軋延材的性質(機械性質)造成影響。另外，軋延處理中之被軋延材的溫度會使被軋延材的硬度變化，會對於軋延處理所需的能量消耗量造成很大的影響。因此，在熱軋作業線的粗軋機的出口側、精軋機的入口側、精軋機的出口側等配置溫度計，進行溫度的量測。The temperature history of the rolled material in the hot rolling line affects the properties (mechanical properties) of the rolled material. Further, the temperature of the rolled product in the rolling treatment changes the hardness of the rolled product, which greatly affects the amount of energy consumption required for the rolling process. 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, the outlet side of the finishing mill, and the like, and the temperature is measured.

針對被軋延材，為了實現希望的材質，而調整加熱爐內的環境溫度來加熱被軋延材。表示一個被軋延材從加熱爐抽出到下一個被軋延材從加熱爐抽出為止的時間之「抽出間隔時間」，係由作業條件、搬送順序的預測等所決定，以達成最大生產速度。例如，將抽出間隔時間決定成：前面的已軋延處理過的被軋延材與後面的被軋延材不會在熱軋作業線上發生碰撞之最短的間隔。In order to achieve a desired material for the rolled material, the ambient temperature in the heating furnace is adjusted to heat the rolled material. The "extraction interval" of the time until the rolled material is taken out from the heating furnace to the next rolled material and taken out from the heating furnace is determined by the operation conditions and the prediction of the transportation order to achieve the maximum production speed. For example, the extraction interval is determined as the shortest interval between the preceding rolled and rolled web and the subsequent rolled web that does not collide on the hot rolling line.

此時，調整設於精軋機的軋延機架(rolling stand)間之冷卻噴水器(cooling spray)(以下稱之為「ISC」)的流量、以及在精軋機內搬送被軋延材之軋延速度，來針對被軋延材的全長，使得在精軋機出口側之被軋延材的溫度都達到且保持在目標溫度。At this time, the flow rate of the cooling spray (hereinafter referred to as "ISC") provided between the rolling stands of the finishing mill, and the rolling of the rolled material in the finishing mill are adjusted. The speed is extended to the full length of the rolled product so that the temperature of the rolled product at the exit side of the finishing mill is reached and maintained at the target temperature.

如上所述，在被軋延材的軋延處理中，係考慮製品的材質、生產量來規劃軋延排程(rolling schedule)，據以控制熱軋作業線。精軋機出口側溫度(以下稱之為「FDT」)，有必要控制在指定的目標值，來確保製品的材質。另外，在精軋機入口側，會發生被軋延材的溫度從被軋延材的前端往尾端慢慢降低之稱為「熱緩降(thermal rundown)」之現象。因此，要使得被軋延材的全長其FDT都維持在目標溫度，就有必要在被軋延材的全長都一邊加速一邊調整ISC流量。As described above, in the rolling process of the rolled material, the rolling schedule is planned in consideration of the material and the production amount 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. Further, on the inlet side of the finishing mill, a phenomenon in which the temperature of the rolled material gradually decreases from the front end to the rear end of the rolled material is called "thermal rundown". 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.

另一方面，為了增加製品的生產量，有必要縮短被軋延材的抽出間隔時間。要縮短抽出間隔時間，就有必要在熱軋作業線上在被軋延材相互間不發生碰撞的範圍內提高軋延速度。然而，一般而言，使金屬材料變形時，即便所施加的形變相同，形變速度越大變形所需的應力(變形阻力)就越增大。因此，提高軋延速度會使軋延所需之能量消耗量增加。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 amount of energy consumption required for rolling.

因而，有必要在可將FDT控制在目標值的範圍內儘可能地提高軋延速度，來增加生產量，而且有必要儘可能地降低軋延速度，來減低能量消耗量。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.

抑制能量消耗量之方法，有一種以在精軋機之前設置加熱裝置之熱軋作業線為對象，而以讓由精軋機所做的軋延的最高速度及加熱裝置的升溫量所決定之能量消耗量變為最小之方式，來決定精軋機之軋延最高速度及加熱裝置的升溫量之方法曾經提出(參照例如專利文獻1)。然而，專利文獻1所提出之方法，並未考慮到使軋延速度降低所造成之生產量降低之問題。A method for suppressing the amount of energy consumption is to use a hot rolling line for setting a heating device before the finishing mill, and to determine the energy consumption of the maximum speed of the rolling by the finishing mill and the amount of heating of the heating device. A method of determining the maximum rolling speed of the finishing mill and the heating amount of the heating device has been proposed (see, for example, Patent Document 1). However, the method proposed in Patent Document 1 does not consider the problem of lowering the throughput caused by the reduction in the rolling speed.

另外，進行能量消耗量的預測計算之方法，有一種根據軋延處理的實際作業資料來預測每一條被軋延材之軋延所需的時間，且從加熱爐內的扁鋼胚資料(slab data)來預測每一個被軋延材的軋延時刻，根據軋延加工量來預測每一條被軋延材的軋延電力，來預測軋延工廠的能量消耗量之方法曾經提出(參照例如專利文獻2)。然而，專利文獻2所提出之方法，並未考慮到軋延速度變化所對於能量消耗量之影響。In addition, in the method of predicting the calculation of the energy consumption amount, there is a method for predicting the rolling time of each rolled product according to the actual working data of the rolling treatment, and the flat steel embryo data from the heating furnace (slab) Data) to predict the rolling time of each rolled material, and to predict the rolling power of each rolled product according to the rolling processing amount, to predict the energy consumption of the rolling mill (refer to, for example, the patent) Literature 2). However, the method proposed in Patent Document 2 does not consider the influence of the change in the rolling speed on the amount of energy consumption.

[先前技術文獻][Previous Technical Literature]

(專利文獻)(Patent Literature)

專利文獻1：日本特許第3444267號公報Patent Document 1: Japanese Patent No. 3444267

專利文獻2：日本特開昭64-15201號公報Patent Document 2: Japanese Patent Laid-Open No. 64-15201

為了抑制熱軋作業線的能量消耗量而降低軋延速度，就有軋延所需時間變長，且無法確保要達成目標的生產量所必要的抽出間隔時間之可能性。另一方面，提高軋延速度，雖然可實現目標的軋延所需時間，但卻有能量消耗量增大之問題。In order to suppress the amount of energy consumption of the hot rolling line and reduce the rolling speed, the time required for rolling is prolonged, and the possibility of the extraction interval necessary for achieving the target throughput cannot be ensured. On the other hand, increasing the rolling speed, although the time required for rolling of the target can be achieved, there is a problem that the amount of energy consumption increases.

本發明係鑑於上述問題點而完成者，其目的在提供可實現目標的軋延所需時間，且可抑制能量消耗量之熱軋作業線之控制裝置。The present invention has been made in view of the above problems, and an object thereof is to provide a control device for a hot rolling line capable of achieving a desired rolling time and suppressing energy consumption.

根據本發明的一個態樣，提供一種熱軋作業線之控制裝置，其中，該熱軋作業線係具備有加熱爐、以及具有連續配置的複數個軋延機架及配置於複數個軋延機架間的冷卻噴水器之精軋機者，該控制裝置係具備有：根據包含有與預定要軋延處理之複數個被軋延材有關的軋延處理排程(schedule)之作業資訊，來算出從加熱爐中將複數個被軋延材抽出的抽出間隔時間之抽出間隔算出裝置；使用抽出間隔時間及作業資訊，來算出對象被軋延材(其為複數個被軋延材中的一個)的目標軋延時間之目標軋延時間算出裝置；根據作業資訊，來計算冷卻噴水器的流量、及在熱軋作業線上搬送對象被軋延材之軋延速度的速度模型(speed pattern)之初期排程計算裝置；修正冷卻噴水器的流量，並在只利用冷卻噴水器的流量的修正並無法遍及對象被軋延材的全長地讓精軋機出口側溫度都為目標值時、及輸入與速度模型有關之速度變更率時，修正速度模型之排程修正裝置；使用速度模型來算出對象被軋延材的軋延所需時間之軋延時間預測算出裝置；以讓軋延所需時間在目標軋延時間以內之方式算出速度變更率，並將算出的速度變更率予以輸出至排程修正裝置之軋延時間調整裝置；以及使用速度模型來計算出在設定於熱軋作業線上的複數個標的點的軋延功率，且對軋延功率進行時間積分而得到能量消耗量，並以讓能量消耗量為最小之方式計算出速度變更率且將之輸出至排程修正裝置之能量消耗量調整裝置，而且，係在軋延所需時間在目標軋延時間以下之範圍內，決定出讓能量消耗量為最小之冷卻噴水器的流量及速度模型之控制裝置。According to an aspect of the present invention, a control apparatus for a hot rolling line is provided, wherein the hot rolling line is provided with a heating furnace, and a plurality of rolling stands having a continuous arrangement and disposed in a plurality of rolling machines In the finishing mill for cooling the water sprinkler between the racks, the control device is configured to calculate the operation information based on the rolling schedule including the plurality of rolled materials scheduled to be rolled. An extraction interval calculation device for extracting a plurality of rolled materials from a heating furnace, and using the extraction interval time and operation information to calculate a target rolled material (which is one of a plurality of rolled products) The target rolling time calculation device for the target rolling time; the initial calculation of the flow rate of the cooling water sprayer and the speed pattern of the rolling speed of the rolled product to be rolled on the hot rolling line based on the operation information Schedule calculation device; correcting the flow rate of the cooling sprinkler, and correcting the flow rate of only the cooling sprinkler and not allowing the full-length of the finishing mill to pass through the entire length of the object to be rolled When the target value is used, and when the speed change rate related to the speed model is input, the schedule correction device for correcting the speed model; and the rolling time prediction calculation device for calculating the time required for the rolling of the rolled product by using the speed model Calculating the speed change rate so that the required time for rolling is within the target rolling time, and outputting the calculated speed change rate to the rolling time adjustment device of the schedule correction device; and calculating the The rolling power is set at a plurality of target points on the hot rolling line, and the rolling power is time-integrated to obtain an energy consumption amount, and the speed change rate is calculated so as to minimize the energy consumption amount and output to the The energy consumption adjustment device of the schedule correction device is a control device for determining the flow rate and velocity model of the cooling water spray that minimizes the amount of energy consumption within a range of the rolling time required for the rolling.

根據本發明，就可提供可實現目標的軋延所需時間，且可抑制能量消耗量之熱軋作業線之控制裝置。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.

接著，參照圖式來詳細說明本發明之第一至第四實施形態。在以下的圖式的記載中，相同或類似的部份均標以相同或類似的符號。以下所示的實施形態，係舉例來說明用來使本發明的技術思想具體化之裝置或方法者，本發明之實施形態，其構成部件的構造、配置等並不限定於以下所述者。本發明之實施形態可在申請專利範圍內加上各種變更。Next, the 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. The embodiments shown below are illustrative of the apparatus or method for embodying the technical idea of the present invention. In the embodiment of the present invention, the structure, arrangement, and the like of the constituent members are not limited to the following. Embodiments of the present invention can be modified in various ways within the scope of the patent application.

(第一實施形態)(First embodiment)

本發明第一實施形態之熱軋作業線之控制裝置10，係如第1圖所示為熱軋作業線20之控制裝置，具備有：作業條件處理裝置11、抽出間隔算出裝置12、目標軋延時間算出裝置13、初期排程計算裝置14、排程修正裝置15、軋延時間預測算出裝置16、軋延時間調整裝置17、及能量消耗量調整裝置18。The control device 10 for the hot rolling line according to the first embodiment of the present invention is a control device for the hot rolling line 20 as shown in Fig. 1, and includes a working condition processing device 11, an extraction interval calculating device 12, and a target rolling. The delay time calculation means 13, the initial schedule calculation means 14, the schedule correction means 15, the rolling time prediction calculation means 16, the rolling time adjustment means 17, and the energy consumption amount adjustment means 18.

控制裝置10所控制之熱軋作業線20，係具備有加熱爐、以及具有連續配置的複數個軋延機架及配置於複數個軋延機架間的冷卻噴水器之精軋機。在說明控制裝置10的詳細內容之前，先參照第2圖來說明熱軋作業線20。第2圖所示之熱軋作業線20具有加熱爐21、粗軋機23、精軋機26、及捲取機28。第2圖顯示被軋延材100已從加熱爐21搬出之狀態。The hot rolling line 20 controlled by the control device 10 includes a heating furnace and a finishing mill having a plurality of rolling stands that are continuously disposed 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 . The hot rolling line 20 shown in Fig. 2 includes a heating furnace 21, a roughing mill 23, a finishing mill 26, and a coiler 28. Fig. 2 shows a state in which the rolled material 100 has been taken out from the heating furnace 21.

從加熱爐21抽出的被軋延材100，係由可逆式的粗軋機23加以軋延。粗軋機23通常具有一台至數台之軋延機架，且使被軋延材100往復移動而使之通過粗軋機23數次，以在粗軋機的出口側將之軋延到目標的中間條板厚度。以下將「使被軋延材100通過粗軋機23的軋延機架」這件事稱為「道次(pass)」。The rolled product 100 taken out from the heating furnace 21 is rolled by a reversible roughing mill 23. The roughing mill 23 usually has one to several rolling stands, and the rolled material 100 is reciprocated and passed through the roughing mill 23 several times to roll it to the middle of the target at the exit side of the roughing mill. Strip thickness. Hereinafter, the case of "passing the rolled web 100 through the rolling stand of the roughing mill 23" is referred to as "pass".

經粗軋機23加以軋延後，將被軋延材100從粗軋機23的出口側搬送至精軋機26的入口側，利用由例如5至7台軋延機架260構成之精軋機26將之軋延到希望的製品板厚度。精軋機26的軋延機架260間，設有第2圖中省略而未圖示之冷卻噴水器(ISC)。After rolling by the roughing mill 23, the rolled product 100 is transferred from the outlet side of the roughing mill 23 to the inlet side of the finishing mill 26, and is milled by a finishing mill 26 composed of, for example, 5 to 7 rolling stands 260. Roll to the desired thickness of the product panel. A cooling water sprayer (ISC), which is omitted in Fig. 2 and not shown, is provided between the rolling stands 260 of the finishing mill 26.

另外，如第2圖所示，在粗軋機23的入口側配置有粗軋機入口側去銹皮器(descaler)22，在精軋機26的入口側配置有精軋機入口側去銹皮器25。以及，在粗軋機23與精軋機26間之搬送台區域配置有盤捲箱(coil box)24。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 a transfer table region between the roughing mill 23 and the finishing mill 26.

從精軋機26搬出之被軋延材100，經冷卻裝置27加以冷卻之後，由捲取機28加以捲繞成線圈狀。冷卻裝置27係為例如水冷裝置。The rolled product 100 taken out from the finishing mill 26 is cooled by a cooling device 27, and then wound by a coiler 28 into a coil shape. The cooling device 27 is, for example, a water cooling device.

再者，沿著熱軋作業線20的被軋延材100的搬送方向，配置有粗軋機出口側溫度計291、精軋機入口側溫度計292、精軋機出口側溫度計293等之複數個溫度計。利用此等溫度計來量測在熱軋作業線20的各位置之被軋延材100的溫度。Further, a plurality of thermometers such as a roughing mill outlet side thermometer 291, a finishing mill inlet side thermometer 292, and a finishing mill exit side thermometer 293 are disposed along the conveying direction of the rolled material 100 of the hot rolling line 20. These thermometers are used to measure the temperature of the rolled product 100 at each position of the hot rolling line 20.

接著，針對第1圖所示之控制裝置10進行說明。Next, the control device 10 shown in Fig. 1 will be described.

作業條件處理裝置11，係從所輸入的作業資訊將必要的作業條件PDI輸出至抽出間隔算出裝置12及初期排程計算裝置14。作業資訊係作為係為為了實現希望的生產量而設定之作業指令、以及操作者所指定之輸入資訊等而輸入至控制裝置10。作業資訊中包含有針對預定軋延處理的複數個被軋延材之軋延處理排程，係為包含有例如FDT的目標值、製品的板厚、板寬、送入加熱爐21之扁鋼胚(slab)的板厚、板寬、長度、從加熱爐21抽出的溫度等之資訊。The work condition processing device 11 outputs the necessary work conditions PDI from the input job information to the extraction interval calculation device 12 and the initial schedule calculation device 14. The work information is input to the control device 10 as a work command set to achieve a desired throughput, input information 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, and includes a target value such as FDT, a plate thickness of the product, a plate width, and a flat steel fed to the heating furnace 21. The thickness of the slab, the width of the plate, the length, the temperature extracted from the heating furnace 21, and the like.

抽出間隔算出裝置12，係根據被處理材的條數及總處理時間等之作業條件PDI來算出依序從加熱爐21抽出的被軋延材100的抽出間隔時間t_EX 。抽出間隔時間t_EX 係為一個被軋延材100從加熱爐21抽出到下一個被軋延材100從加熱爐21抽出為止的時間。The extraction interval calculation device 12 calculates the extraction interval time t _{EX of the} rolled material 100 sequentially drawn from the heating furnace 21 based on the work conditions PDI such as the number of materials to be processed and the total processing time. The extraction interval time t _EX is a time period from when the rolled product 100 is taken out from the heating furnace 21 to when the next rolled product 100 is taken out from the heating furnace 21.

目標軋延時間算出裝置13，係使用抽出間隔時間t_EX 及作業資訊中所含的軋延速度之資訊等，來針對預定在熱軋作業線20接受處理的被軋延材100而算出目標軋延時間t_Tar 。The target rolling time calculation device 13 calculates the target rolling for the rolled material 100 scheduled to be processed on the hot rolling line 20 by using the extraction interval time t _EX and the information of the rolling speed included in the work information. Delay time t _Tar .

初期排程計算裝置14，係根據作業條件PDI來算出為了達成在精軋機出口側之目標板厚及被軋延材溫度所必需之控制基準值之初始值SV0。具體而言，係計算出軋延所必需之輥隙(roll gap)、配置於熱軋作業線20之冷卻噴水器(ISC)的流量、及在熱軋作業線20上搬送處理對象之被軋延材100之軋延速度的速度模型。The initial schedule calculation device 14 calculates an initial value SV0 of a control reference value necessary for achieving a target thickness and a rolled material temperature at the exit side of the finishing mill based on the working condition PDI. Specifically, the roll gap necessary for rolling, the flow rate of the cooling water sprayer (ISC) disposed on the hot rolling line 20, and the rolling of the object to be transported on the hot rolling line 20 are calculated. The speed model of the rolling speed of the web 100.

排程修正裝置15，係以讓被軋延材100的全長都達成目標精軋機出口側溫度(目標FDT)之方式修正ISC的流量。而且，若只利用ISC的流量之修正並無法遍及全長地讓精軋機出口側溫度(FDT)都與目標值一致時，則修正軋延速度的速度模型。或者，若輸入與軋延速度的速度模型有關之速度變更率α_V 時，則使用所輸入的速度變更率α_V 來修正軋延速度的速度模型。The schedule correction device 15 corrects the flow rate of the ISC so that the entire length of the rolled product 100 reaches the target finish rolling mill outlet temperature (target FDT). Further, if the correction of the flow rate of the ISC is not used to make the finish mill outlet temperature (FDT) consistent with the target value over the entire length, the speed model of the rolling speed is corrected. Alternatively, to correct the velocity model if and rolling speed and rolling speed and the model input speed of the speed of the change rate α _V, the input speed change rate using α _V.

修正過的ISC的流量或速度模型，係作為用來控制熱軋作業線20之控制基準值SV而輸出至熱軋作業線20。例如，ISC的流量係輸出至用來調整配置於熱軋作業線20之ISC的閥以控制流量之致動器(actuator)，速度模型係輸出至用來驅動精軋機26的軋延機架260的輥(roll)之驅動器(driver)。The flow rate or velocity model of the corrected ISC is output to the hot rolling line 20 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 20 to control the flow rate, and the speed model is output to the rolling stand 260 for driving the finishing mill 26. Roller driver.

軋延時間預測算出裝置16，係使用排程修正裝置15所決定出之控制基準值SV中所含的速度模型來算出被軋延材100的軋延所需時間t_rm 。The rolling time prediction calculation device 16 calculates the time t _rm required for rolling of the rolled product 100 using the velocity model included in the control reference value SV determined by the schedule correction device 15.

軋延時間調整裝置17，係比較軋延時間預測算出裝置16所算出的軋延所需時間t_rm 、與目標軋延時間算出裝置13所算出的目標軋延時間t_Tar 。然後，以讓軋延所需時間t_rm 在目標軋延時間t_Tar 以內之方式算出軋延速度的速度變更率α_V 。算出的速度變更率α_V 係輸出至排程修正裝置15。The rolling time adjustment device 17 compares the rolling required time t _rm calculated by the rolling time prediction calculation device 16 with the target rolling time t _Tar calculated by the target rolling time calculation device 13 . Then, the speed change rate α _{V of the} rolling speed is calculated so that the rolling required time t _{rm is} within the target rolling time t _Tar . The calculated speed change rate α _V is output to the schedule correction device 15 .

能量消耗量調整裝置18，係根據排程修正裝置15所算出之速度模型來計算設定於熱軋作業線20上之複數個計算點處的軋延功率，並對計算出的軋延功率進行時間積分來算出能量消耗量。軋延功率係利用驅動軋延機架之馬達的驅動電流而算出。此外，在可削減能量消耗量之情況，能量消耗量調整裝置18，係以讓能量消耗量最小化之方式計算出速度變更率α_V 並將之輸出至排程修正裝置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 α _V so as to minimize the energy consumption amount, and outputs it to the schedule correction device 15.

如上所述，第1圖所示之控制裝置10，係以在令軋延所需時間t_rm 於目標軋延時間t_Tar 以內之條件下使能量消耗量最小化之方式，來決定ISC的流量以及在熱軋作業線20上搬送之被軋延材100的軋延速度的速度模型。As described above, the control device 10 shown in Fig. 1 determines the flow rate of the ISC by minimizing the amount of energy consumption under the condition that the rolling required time t _{rm is} within the target rolling time t _Tar . And a speed model of the rolling speed of the rolled product 100 conveyed on the hot rolling line 20.

以下，參照第3圖來說明利用第1圖所示之控制裝置10來控制熱軋作業線20的方法之例。第3圖中，左側的流程圖31表示軋延運轉期(rolling campaign)的計算方法。所謂的「軋延運轉期」，係預定要連續地軋延處理之被軋延材的單位，例如，在熱軋作業線20更換輥以前預定要軋延處理之被軋延材的單位。第3圖中右側的流程圖32表示預定要在熱軋作業線20處理之複數個被軋延材中的一個，亦即對象被軋延材100[a]的計算方法。對象被軋延材100[a]，係為ISC的流量及速度模型的作成對象，係預定在第a個接受軋延處理之被軋延材。Hereinafter, an example of a method of controlling the hot rolling line 20 by the control device 10 shown in Fig. 1 will be described with reference to Fig. 3 . In Fig. 3, a flowchart 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 and processed, for example, a unit of the rolled material to be subjected to the rolling treatment before the hot rolling line 20 is replaced. The flowchart 32 on the right side in Fig. 3 shows one of a plurality of rolled products to be processed in the hot rolling line 20, that is, a method of calculating the object to be rolled 100 [a]. The object to be rolled 100 [a] is a target for the flow rate and velocity model of the ISC, and is intended to be a rolled material which is subjected to the rolling treatment in the ath.

首先，針對流程圖31所示之處理進行說明。First, the processing shown in the flowchart 31 will be described.

在步驟S311中，將從作業條件處理裝置11傳送過來之軋延運轉期內的作業條件PDI予以輸入至抽出間隔算出裝置12。In step S311, the work condition PDI in the rolling operation period transmitted from the work condition processing device 11 is input to the extraction interval calculation device 12.

在步驟S312中，抽出間隔算出裝置12根據作業條件PDI來算出抽出間隔時間t_EX [a]。此抽出間隔時間t_EX [a]並非根據每一條被軋延材，而是根據軋延運轉期及加熱爐作業條件來決定。符號[a]表示與對象被軋延材100[a]有關之數值(以下皆同)。In step S312, the extraction interval calculation means 12 calculates the extraction interval time t _EX [a] based on the work condition PDI. This extraction interval time t _EX [a] is not determined according to each of the strips to be rolled, 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 100 [a].

抽出間隔時間t_EX [a]，在例如由在加熱爐21內的加熱時間所決定時，係由被軋延材100的加熱時間及抽入加熱爐21、或預測將抽入加熱爐21的時刻所決定。The extraction interval time t _EX [a] is, for example, determined by the heating time in the heating furnace 21, by the heating time of the rolled material 100 and the drawing into the heating furnace 21, or is predicted to be drawn into the heating furnace 21. It is decided at the moment.

對象被軋延材100[a]的抽出間隔時間t_EX [a]，係使用軋延運轉期、或未軋延的被軋延材100的材數P、及對上述的所有被軋延材進行軋延所需的時間的目標(以下稱之為「目標總軋延時間」)t_Tgt ，而以如下之式(1)來算出：t_EX [a]=t_Tgt /P+f(FDTa[a],SGF[a],dh[a],1[a])　…(1)式(1)之右邊第二項係為修正項，係表示成目標精軋機出口側溫度FDTa、材種分類SGF、總軋下量dh、軋延材長度1之函數。該等參數的值均預先決定。The extraction interval time t _EX [a] of the object to be rolled material 100 [a] is the rolling operation period or the number P of the rolled material 100 that has not been rolled, and all the rolled products described above. The target of the time required for rolling (hereinafter referred to as "target total rolling time") t _Tgt is calculated by the following formula (1): t _EX [a] = t _Tgt / P + f (FDTa [a], SGF[a], dh[a], 1[a]) (1) The second term on the right side of the formula (1) is a correction term, which is expressed as the target finishing mill side temperature FDTa, the material species. Classification of SGF, total rolling down dh, rolling mill length 1 as a function. The values of these parameters are predetermined.

抽出間隔時間t_EX [a]的總和必須與目標總軋延時間t_Tgt 相等，所以要滿足以下之式(2)、式(3)之關係：The sum of the extraction intervals t _EX [a] must be equal to the target total rolling time t _Tgt , so the relationship of the following equations (2) and (3) is satisfied:

t_Tgt =Σt_EX [a]　…(2)t _Tgt =Σt _EX [a] ...(2)

Σ(f(FDTa[a],SGF[a],dh[a],1[a]))=0　…(3)Σ(f(FDTa[a],SGF[a],dh[a],1[a])))=0 (3)

式(2)、式(3)中，Σ表示從a=1到P之總和。In the formulas (2) and (3), Σ represents the sum from a=1 to P.

接著，在步驟S313中，目標軋延時間算出裝置13算出目標軋延時間t_Tar 。目標軋延時間t_Tar 係以軋延運轉期內的被軋延材為對象而算出。以下，說明目標軋延時間t_Tar 的計算方法。Next, in step S313, the target rolling time calculation means 13 calculates the target rolling time t _Tar . The target rolling time t _Tar is calculated for the rolled material in the rolling operation period. Hereinafter, a calculation method of the target rolling time t _Tar will be described.

預定在第a個接受軋延之對象被軋延材100[a]的目標軋延時間t_Tar [a]，必須使得對象被軋延材100[a]在接受軋延時不會被接下來預定要軋延處理之第a+1個被軋延材100[a+1]追上。因此，對象被軋延材100[a]的目標軋延時間t_Tar [a]，係依照以下之式(4)來算出：The target rolling time t _Tar [a] of the object to be rolled and rolled 100[a], which is scheduled to be rolled, must be such that the object being rolled and rolled 100[a] will not be scheduled next. The a+1th rolled product 100[a+1] to be rolled up is caught up. Therefore, the target rolling time t _Tar [a] of the object to be rolled 100 [a] is calculated according to the following formula (4):

t_Tar [a]=t_EX [a+1]+t_R [a+1]　…(4)t _Tar [a]=t _EX [a+1]+t _R [a+1] ...(4)

式(4)中，t_R [a]係為對象被軋延材100[a]的精軋機軋延開始位置到達時間。「精軋機軋延開始位置到達時間」係對象被軋延材100[a]從加熱爐21抽出直到到達精軋機軋延開始位置之時間。「精軋機軋延開始位置」可任意設定，但在例如對象被軋延材100[a]與前面的被軋延材100[a-1]過於接近時，係設定在對象被軋延材100[a]待機之位置。In the formula (4), t _R [a] is the rolling mill start position arrival time of the finishing mill of the object to be rolled 100 [a]. The "finishing mill rolling start position arrival time" is the time when the object to be rolled 100 [a] is taken out from the heating furnace 21 until it reaches the rolling mill start position. The "finishing mill rolling start position" can be arbitrarily set. However, when the target rolled material 100 [a] is too close to the preceding rolled material 100 [a-1], the target rolled product 100 is set. [a] Standby position.

精軋機軋延開始位置到達時間t_R [a]，係以如下之式(5)加以表示：The rolling mill start position arrival time t _R [a] is expressed by the following formula (5):

t_R [a]=Σt_Rr [n][a]+Σt_T [n][a]+t_TFN [a]　…(5)t _R [a]=Σt _Rr [n][a]+Σt _T [n][a]+t _TFN [a] ...(5)

式(5)中，Σ表示從n=1到N_R 之總和。N_R 係為粗軋機23的軋延機架的數目。另外，t_Rr [n]係為在粗軋機23的第n個軋延機架中的軋延所需時間，t_T [n]係為粗軋機23的第n個軋延機架入口側搬送時間，t_TFN 係為粗軋機23的最終軋延機架出口側搬送時間。In the formula (5), Σ represents the sum from n = 1 to N _R's. N _R is the number of rolling stands of the roughing mill 23. Further, t _Rr [n] is the time required for rolling in the nth rolling stand of the roughing mill 23, and t _T [n] is the n-th rolling frame inlet side transfer of the roughing mill 23 The time, t _TFN is the exit side transfer time of the final rolling stand of the roughing mill 23.

精軋機軋延開始位置係位於比精軋機26要為靠近熱軋作業線20的上游側之位置。因此，在精軋機軋延開始位置的上游之粗軋機23進行軋延時的速度或搬送被軋延材的速度，並未受到溫度控制之影響。因此，在此階段可精度良好地預測精軋機軋延開始位置到達時間t_R [a]。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 of the finishing mill performs the rolling delay 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 t _R [a] can be accurately predicted.

在粗軋機23進行軋延的途中對象被軋延材100[a]被下一被軋延材追上時，必須變更對象被軋延材100[a]或下一被軋延材的軋延速度。因此，在粗軋機23的第m台軋延機架中，必須滿足以下之式(6)的條件：When the object to be rolled 100 [a] is caught up by the next rolled material in the middle of rolling in the roughing mill 23, it is necessary to change the rolling of the object to be rolled 100 [a] or the next rolled material. speed. Therefore, in the mth rolling stand of the roughing mill 23, the following condition (6) must be satisfied:

Σ_m t_Rr [n][a]+Σ_m t_T [n][a]≦t_EX [a+1]+Σ_m-1 t_Rr [n][a+1]+Σ_m t_T [n][a+1]　…(6)Σ _m t _Rr [n][a]+Σ _m t _T [n][a]≦t _EX [a+1]+Σ _m-1 t _Rr [n][a+1]+Σ _m t _T [ n][a+1] ...(6)

式(6)中，Σ_m 表示從n=1到m之總和，Σ_m-1 表示從n=1到m-1之總和。In the formula (6), Σ _m represents the sum from n=1 to m, and Σ _m-1 represents the sum from n=1 to m-1.

此處所算出之各被軋延材100的抽出間隔時間t_EX [a]及精軋機軋延開始位置到達時間t_R [a]，係使用於軋延時間調整裝置17所進行之軋延所需時間t_rm 與目標軋延時間t_Tar 之比較中。The extraction interval time t _EX [a] of each of the rolled webs 100 calculated here and the finish rolling mill start position arrival time t _R [a] are used for the rolling performed by the rolling time adjusting device 17. The time t _{rm is} compared with the target rolling time t _Tar .

至此，流程圖31所示之處理結束。So far, the processing shown in the flowchart 31 ends.

如上述，在進行針對軋延運轉期之流程圖31所示的計算之時點，已預先進行目標軋延時間t_Tar 之計算。另外，在操作者藉由手動介入等而變更了軋延速度或抽出間隔時間t_EX 時，必須再重新計算目標軋延時間t_Tar 。As described above, the calculation of the target rolling time t _Tar has been performed in advance at the time of the calculation shown in the flowchart 31 of the rolling operation period. Further, when the operator changes the rolling speed or the extraction interval t _EX by manual intervention or the like, the target rolling time t _Tar must be recalculated.

接著，說明針對對象被軋延材100[a]之流程圖32所示之處理。執行針對對象被軋延材100[a]的計算之時點，係在對對象被軋延材100[a]進行軋延之前的任意時點進行。Next, the processing shown in the flowchart 32 for the object to be rolled 100 [a] will be described. The calculation of the time at which the object to be rolled 100 [a] is calculated is performed at any point before the rolling of the object to be rolled 100 [a].

在步驟S321中，初期排程計算裝置14接收從作業條件處理裝置11發送過來之對象被軋延材100[a]的作業條件PDI。In step S321, the initial schedule calculation device 14 receives the work condition PDI of the object to be rolled 100 [a] transmitted from the work condition processing device 11.

在步驟S322中，初期排程計算裝置14根據作業條件PDI而進行排程計算。在排程計算中，為了達成在精軋機出口側的目標板厚及軋延材溫度，而根據熱軋作業線20的作業條件及操作者的輸入資料，來決定軋延所需之輥隙、冷卻水的流量及被軋延材100之在精軋機26接受軋延中的速度模型等。In step S322, the initial schedule calculation means 14 performs schedule calculation based on the work condition PDI. In the scheduling calculation, in order to achieve the target thickness and the rolled material temperature on the exit side of the finishing mill, the nip required for rolling is determined according to the working conditions of the hot rolling line 20 and the input data of the operator. The flow rate of the cooling water and the speed model of the rolled product 100 that is subjected to rolling in the finishing mill 26 are used.

第4圖顯示作為與精軋機26有關之排程計算的對象之精軋機排程計算區域。為了預測對象被軋延材100[a]的溫度，將設置在精軋機26的各軋延機架間之ISC 265的流量的影響列入考慮，而由初期排程計算裝置14進行從精軋機入口側溫度計292到精軋機出口側溫度計293之溫降計算。Fig. 4 shows a finish rolling mill calculation area as an object of the schedule calculation relating to the finishing mill 26. In order to predict the temperature of the object to be rolled 100 [a], the influence of the flow rate of the ISC 265 disposed between the rolling stands of the finishing mill 26 is taken into consideration, and the finishing schedule is performed by the initial scheduling calculation device 14. The temperature drop of the inlet side thermometer 292 to the finisher exit side thermometer 293 is calculated.

此時，由於熱緩降或對象被軋延材100[a]的加減速，在對象被軋延材100[a]的長度方向各位置，要達成目標FDT所必需的ISC 265的流量會不同。因此，有必要對於對象被軋延材100[a]的長度方向的任意個計算點逐一進行溫降計算。以下將該計算點稱為「標的點」。第5圖(a)至(c)顯示被軋延材100的片段編號及標的點編號。At this time, the flow rate of the ISC 265 necessary to achieve the target FDT is different at each position in the longitudinal direction of the object to be rolled material 100 [a] due to the thermal slowdown or the acceleration/deceleration of the object to be rolled 100 [a]. . Therefore, it is necessary to perform temperature drop calculation one by one for any of the calculation points in the longitudinal direction of the object to be rolled and rolled 100 [a]. Hereinafter, the calculation point is referred to as a "target point." Fig. 5 (a) to (c) show the segment number and the mark point number of the rolled material 100.

第5圖(a)顯示被軋延材100，圖右端為前端，圖左端為尾端。為了以容易看懂的方式來顯示被軋延材100的長度方向的任意的點，將假想地等間隔分割被軋延材100而分割出的單位稱為片段(segment)。第5圖(b)顯示被軋延材100的片段。為了簡單起見，片段編號係從被軋延材100的前端到尾端依序編列。第5圖(c)顯示標的點編號。標的點0至M係經過選擇之軋延處理中之重要的點。標的點係設定為例如咬入點、軋延速度會為最大之中間點、溫度會為最低之尾端點等。Fig. 5(a) shows the rolled material 100, the right end of which is the front end, and the left end of the figure is the tail end. In order to display an arbitrary point in the longitudinal direction of the rolled material 100 in a manner that is easy to understand, a unit that is divided by imaginarily dividing the rolled material 100 at equal intervals is referred to as a segment. Fig. 5(b) shows a fragment of the rolled product 100. For the sake of simplicity, the segment numbers are sequentially arranged from the front end to the trailing end of the rolled web 100. Figure 5 (c) shows the marked point number. The target points 0 to M are important points in the selected rolling process. The target point is set to, for example, a bite point, a midpoint where the rolling speed will be the maximum, and a tail end where the temperature will be the lowest.

在第3圖之步驟S323至S325中，排程修正裝置15係計算出可在對象被軋延材100的全長都達成目標FDT之如以下的ISC 265的流量及速度模型。In steps S323 to S325 of Fig. 3, the schedule correction device 15 calculates the flow rate and velocity model of the ISC 265 which can achieve the target FDT for the entire length of the object to be rolled 100.

在步驟S323中，排程修正裝置15計算可達成目標FDT之ISC 265的流量。為此，使ISC 265的流量變化而進行溫降計算，並以讓計算出的FDT與目標FDT一致之方式進行收斂計算。關於使ISC 265的流量變化時的收斂計算的詳細內容將在後面說明。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 temperature of the ISC 265 is changed to perform temperature drop calculation, and the convergence calculation is performed in such a manner that the calculated FDT coincides with the target FDT. The details of the convergence calculation when the flow rate of the ISC 265 is changed will be described later.

在即使應用了以上述收斂計算而得到的ISC 265的流量而無法達到目標FDT時，就有必要變更軋延速度的速度模型來達成目標FDT。具體而言，若在修正了ISC 265的流量時也無法在任一個標的點達到目標FDT時，則在步驟S324中，排程修正裝置15將之判定為無法在被軋延材100的全長都達成目標FDT。此時，為了變更速度模型來達成目標FDT，在步驟S325中，排程修正裝置15對軋延速度的速度模型進行修正。關於速度模型的修正方法的詳細內容將在後面說明。When the target FDT cannot be reached 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 that the total length of the rolled material 100 cannot be reached in step S324. Target 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 velocity model will be described later.

修正過速度模型之後，處理回到步驟S323，使用修正過的速度模型來再度計算ISC 265的流量。重複步驟S323至S325，直到決定出在對象被軋延材100[a]的全長都達成目標FDT之速度模型。After the overspeed model is corrected, the process returns to step S323 to recalculate the flow of the ISC 265 using the corrected velocity model. Steps S323 to S325 are repeated until it is determined that the velocity model of the target FDT is achieved over the entire length of the object to be rolled 100 [a].

接著，在步驟S326中，軋延時間預測算出裝置16計算對象被軋延材100[a]的軋延所需時間t_rm [a]。軋延所需時間t_rm [a]係由以下的式(7)加以表示：Next, in step S326, the rolling time prediction calculation means 16 calculates the rolling required time t _rm [a] of the target rolled product 100 [a]. The time t _rm required for rolling is [a] expressed by the following formula (7):

t_rm [a]=t_R [a]+t_F [a]　…(7)t _rm [a]=t _R [a]+t _F [a] ...(7)

式(7)中，t_F [a]係為從精軋機軋延開始位置開始，一直到對象被軋延材100[a]的尾端脫離精軋機26所需的軋延時間(以下稱之為「精軋機軋延時間」)。In the formula (7), t _F [a] is the rolling time required from the rolling start position of the finishing mill until the end of the object to be rolled 100 [a] is separated from the finishing mill 26 (hereinafter referred to as It is the "rolling mill rolling time").

在步驟S326中，係從經排程修正裝置15加以修正過的速度模型來計算軋延所需時間t_rm [a]。如式(7)所示，依照式(5)而算出之精軋機軋延開始位置到達時間t_R [a]與精軋機軋延時間t_F [a]之和即為軋延所需時間t_rm [a]。In step S326, the time required to roll for t _rm [a] is calculated from the corrected velocity model by the schedule correction means 15. As shown in the formula (7), the sum of the rolling mill start position arrival time t _R [a] calculated in accordance with the formula (5) and the finishing mill rolling time t _F [a] is the time required for rolling. _Rm [a].

接著，在步驟S327至S329中，由軋延時間調整裝置17以讓軋延所需時間t_rm [a]在目標軋延時間t_Tar [a]以內之方式計算出速度變更率α_V 。Next, in steps S327 to S329, the speed change rate α _V is calculated by the rolling time adjusting device 17 so that the rolling required time t _rm [a] is within the target rolling time t _Tar [a].

在步驟S327中，判斷步驟S326中算出的軋延所需時間t_rm [a]是否在目標軋延時間t_Tar [a]以內。第6圖(a)至(c)顯示軋延時間的決定方法之概念圖。In step S327, it is determined whether or not the rolling required time t _rm [a] calculated in step S326 is within the target rolling time t _Tar [a]. Fig. 6 (a) to (c) show conceptual diagrams of the method of determining the rolling time.

第6圖(a)顯示將對象被軋延材100[a]從加熱爐21抽出的那個時點的狀態。第6圖(b)顯示在精軋機軋延開始位置到達時間t_R [a]後之對象被軋延材100[a]到達精軋機軋延開始位置的那個時點的狀態。此時，只要在對象被軋延材100[a]之後接受處理之被軋延材100[a+1]的抽出間隔時間t_EX [a+1]比對象被軋延材100[a]的抽出間隔時間t_EX [a]小，就將被軋延材100[a+1]從加熱爐21抽出。第6圖(c)顯示在精軋機軋延時間t_F [a]後之對象被軋延材100[a]的精軋機軋延結束的那個時點的狀態。Fig. 6(a) shows a state in which the object is taken out from the heating furnace 21 by the rolled product 100[a]. Fig. 6(b) shows the state at which the object to be rolled and rolled 100[a] reaches the rolling mill start position after the rolling mill start position arrival time t _R [a]. At this time, the extraction interval time t _EX [a+1] of the rolled material 100 [a+1] subjected to the treatment after the object is rolled (100) is higher than that of the object rolled product 100 [a] When the extraction interval time t _EX [a] is small, the rolled material 100 [a+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 rolled product 100[a] is finished rolling after the finishing rolling mill time t _F [a].

為了使軋延所需時間t_rm [a]在目標FDT以內，對象被軋延材100[a]必須在不被下一個被軋延材追上的情況下到達精軋機軋延開始位置。因此，對象被軋延材100[a]的精軋機軋延開始位置到達時間t_R [a]與精軋機軋延時間t_F [a]的和，只要比被軋延材100[a+1]的抽出間隔時間t_EX [a+1]與精軋機軋延開始位置到達時間t_R [a+1]的和小即可，亦即，只要滿足以下之式(8)即可：In order to make the rolling required time t _rm [a] within the target FDT, the object to be rolled 100 [a] must reach the finishing stand rolling start position without being caught by the next rolled material. Therefore, the object is rolled by the rolling mill 100 [a] rolling mill start position arrival time t _R [a] and the finishing mill rolling time t _F [a], as long as the ratio of the rolled material 100 [a+1] The sum of the extraction interval time t _EX [a+1] and the finish rolling mill start position arrival time t _R [a+1] may be small, that is, as long as the following formula (8) is satisfied:

t_R [a]+t_F [a](cur)≦t_EX [a+1]+t_R [a+1]-deltaM　…(8)t _R [a]+t _F [a](cur)≦t _EX [a+1]+t _R [a+1]-deltaM ...(8)

式(8)中，deltaM表示餘裕的時間，係為了避免被軋延材相互間在熱軋作業線20內靠得太近而預先設定的固定值。此外，t_F [a](cur)係精軋機軋延時間t_F [a]的現在值。In the formula (8), deltaM indicates the time of the margin, and is a fixed value which is set in advance so as to avoid the rolled material being too close to each other in the hot rolling line 20. Further, t _F [a] (cur) is the current value of the rolling mill rolling time t _F [a].

若滿足式(8)的條件，處理就前進到步驟S330，進行消耗能量之計算。If the condition of the formula (8) is satisfied, the process proceeds to step S330, where the calculation of the consumed energy is performed.

若不滿足式(8)的條件，則在第3圖之步驟S328中，判斷是否可變更ISC 265的流量、速度模型。若可變更，就在步驟S329中計算速度變更率α_V 。是否能變更ISC 265的流量、速度模型，係根據ISC 265的最大流量及驅動軋延機架260的馬達的能力等來進行判斷。If the condition of the formula (8) is not satisfied, it is determined in step S328 of Fig. 3 whether or not the flow rate and velocity model of the ISC 265 can be changed. If it is changeable, the speed change rate α _V is calculated in step S329. Whether or not the flow rate and speed model of the ISC 265 can be changed is determined based on the maximum flow rate of the ISC 265 and the ability to drive the motor of the rolling stand 260.

另一方面，在步驟S328中若不能變更ISC 265的流量、速度模型，軋延時間調整裝置17就將之判斷為已無法進一步變更精軋機軋延時間t_F [a]。此時，就不進行速度模型的修正，而使處理前進到步驟S330。On the other hand, if the flow rate and speed model of the ISC 265 cannot be changed in step S328, the rolling time adjustment device 17 determines that the finishing mill rolling time t _F [a] cannot be further changed. At this time, the correction of the velocity model is not performed, and the process proceeds to step S330.

上述之步驟S329的速度變更率計算，係針對可滿足式(8)之在精軋機26中的軋延速度來計算速度變更率α_V 。新的精軋機軋延時間t_F [a](new)，係依照以下之式(9)來算出：The speed change rate calculation in the above-described step S329 calculates the speed change rate α _V for the rolling speed in the finish rolling mill 26 which satisfies the equation (8). The new finishing mill rolling time t _F [a] (new) is calculated according to the following formula (9):

t_F [a](new)=t_Ex [a+1]+t_R [a+1]-t_R [a]-deltaM　…(9)t _F [a](new)=t _Ex [a+1]+t _R [a+1]-t _R [a]-deltaM (9)

軋延時間調整裝置17係比較精軋機軋延時間的現在值t_F [a](cur)及精軋機軋延時間的目標速度，而用以下的式(10)來計算必需的速度變更率α_V ：The rolling time adjusting device 17 compares the current value t _F [a] (cur) of the rolling mill rolling time and the target speed of the finishing mill rolling time, and calculates the necessary speed change rate α by the following formula (10). _V :

α_V =C₁ ×(t_F [a](cur)/t_F [a](new))　…(10)α _V = C ₁ ×(t _F [a](cur)/t _F [a](new)) (10)

式(10)中，C₁ 係依經驗而決定之常數，係為固定值或資料庫中記錄的表中之值。In the formula (10), C ₁ is a constant determined empirically, and is a fixed value or a value in a table recorded in a database.

在步驟S329中計算出精軋機速度的速度變更率α_V 之後，使用該速度變更率α_V 來在步驟S325中進行速度模型的修正，然後再在步驟S323中進行ISC 265的流量的修正計算。藉此，修正速度模型及ISC 265的流量以期能夠達到目標FDT。After the speed change rate α _V of the finishing mill speed is calculated in step S329, the speed model is corrected in step S325 using the speed change rate α _V , and then the flow rate correction calculation of the ISC 265 is performed in step S323. Thereby, the velocity model and the flow rate of the ISC 265 are corrected to achieve the target FDT.

在步驟S327中軋延所需時間t_rm [a]在目標軋延時間t_Tar [a]以內時、或是在步驟S328中已無法進一步變更ISC 265的流量及速度模型時，處理前進到步驟S330，計算對象被軋延材100[a]的軋延所需的能量消耗量。When the rolling required time t _rm [a] is within the target rolling time t _Tar [a] in step S327, or when the flow rate and velocity model of the ISC 265 cannot be further changed in step S328, the process proceeds to the step. S330, calculating the energy consumption amount required for the rolling of the rolled product 100[a].

在步驟S330至S333中，能量消耗量調整裝置18計算能量消耗量，並計算使能量消耗量最小化所必需的速度變更率α_V 。In steps S330 to S333, the energy consumption amount adjusting device 18 calculates the energy consumption amount, and calculates the speed change rate α _V necessary to minimize the energy consumption amount.

步驟S330中之能量消耗量之計算，係使用排程修正裝置15所計算出之速度模型來計算在標的點之軋延功率(kW)。能量消耗量調整裝置18使用計算出的軋延功率，來計算從對象被軋延材100[a]被咬入到對象被軋延材100[a]的尾端脫離為止，亦即在對象被軋延材100[a]的全長之能量消耗量(kWh)。The calculation of the energy consumption amount in step S330 is performed by using the velocity model calculated by the schedule correction device 15 to calculate the rolling power (kW) at the target point. The energy consumption amount adjusting device 18 calculates, based on the calculated rolling power, that the object to be rolled material 100 [a] is bitten into the tail end of the object to be rolled material 100 [a], that is, the object is The energy consumption (kWh) of the entire length of the rolled product 100 [a].

對對象被軋延材100[a]進行軋延所必需之能量消耗量E_p ，係由以下的式(11)加以表示：The energy consumption amount E _p necessary for rolling the object to be rolled 100 [a] is expressed by the following formula (11):

E_p =ΣEj=Σ{(1/3600)×∫P_Wj (t)dt}　…(11)E _p =ΣEj=Σ{(1/3600)×∫P _Wj (t)dt} (11)

式(11)中，∫dt表示從t=0到s之時間積分。此處，s(sec)為軋延時間。另外，Σ表示粗軋機23及精軋機26所做的所有軋延的和，Ej(kWh)係第j次的壓延的能量消耗量，「第j次的壓延」係為粗軋機23的道次(R[1]至R[N_RP ])及精軋機26的軋延機架1至N_P 之任一者中的軋延之意。In the formula (11), ∫dt represents the time integral from t=0 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. (R[1] to R[N _RP ]) and the rolling mill 1 to N _P of the finishing mill 26 are intended to be rolled.

式(11)之在標的點i的軋延功率P_Wi (kW)係如以下般算出：The rolling power P _Wi (kW) at the target point i of the formula (11) is calculated as follows:

P_Wi =(1000×V_i ×G_i )/R_i +P_WLOSSi 　…(12)P _Wi = (1000 × V _i × G _i ) / R _i + P _WLOSSi ... (12)

式(12)之軋延輥速V_i (m/s)、輥轉矩G_i (kNm)、輥半徑R_i (mm)、損失功率P_WLOSSi (kW)，係使用排程修正裝置15所算出之值或依經驗所得到之值。Roll rolling speed V _i (m/s) of formula (12), roll torque G _i (kNm), roll radius R _i (mm), loss power P _WLOSSi (kW), using schedule correction device 15 Calculated value or value obtained by experience.

軋延功率P_Wi 係如式(12)所示，與軋延輥速V_i 及輥轉矩G_i 成比例而變化。第7圖顯示在被軋延材長度方向之軋延功率P_Wi 的變化。第7圖之粗線部A表示軋延功率P_Wi 的變化，標的點間的值係做線性插值而得。面積E₀ 至E₄ 分別表示標的點間的能量消耗量。第7圖之畫斜線表示的面積即為能量消耗量。亦即，能量消耗量係以如下的式(13)加以表示：The rolling power P _Wi is changed as shown in the formula (12) in proportion to the rolling roll speed V _i and the roll torque G _i . Fig. 7 shows the change in rolling power P _Wi in the longitudinal direction of the rolled product. The thick line portion A of Fig. 7 indicates the change of the rolling power P _Wi , and the values between the target points are obtained by linear interpolation. The areas E ₀ to E ₄ represent the amount of energy consumption between the target points, respectively. The area indicated by the diagonal line in Fig. 7 is the energy consumption. That is, the energy consumption amount is expressed by the following formula (13):

∫P_Wj (t)dt=Σ{(P_Wi +P_W(i+1) )×S_i /2}　…(13)∫P _Wj (t)dt=Σ{(P _Wi +P _W(i+1) )×S _i /2} (13)

式(13)中，∫dt表示從t=0到s之時間積分，Σ表示i==0到M之總和。M為最終標的點。此外，S_i 表示標的點間之軋延時間，此S_i 係以依速度變化情形之不同而異的手段來算出。例如，使用ISC 265來控制FDT時，標的點間的速度係根據指定的加速度而以等加速度變化。因此，軋延時間S_i 係以如下的式(14)加以表示：In the formula (13), ∫dt represents the time integral from t=0 to s, and Σ represents the sum of i==0 to M. M is the final target point. Further, S _i represents the rolling time between the target points, and this S _i is calculated by means different depending on the speed change. For example, when ISC 265 is used to control FDT, the velocity between the target points changes at an equal acceleration according to the specified acceleration. Therefore, the rolling time S _i is expressed by the following formula (14):

S_i =2L_i /(V_i+1 +V_i )　…(14)S _i =2L _i /(V _i+1 +V _i ) (14)

式(14)中，L_i 為各標的點間的距離。In the formula (14), L _i is the distance between the points of the respective targets.

在步驟S330之能量消耗量的計算之後，在步驟S331中，能量消耗量調整裝置18判定是否可削減能量消耗量。在軋延時間調整裝置17先前判定為已無法進一步變更精軋機的軋延時間時，或者是在剛完成的能量消耗量的計算中判斷為不可能削減能量消耗量時，能量消耗量調整裝置18就不變更速度變更率α_V ，且在步驟S334中排程修正裝置15將控制基準值SV予以輸出，然後結束處理。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 α _{V is} not changed, and the schedule correction device 15 outputs the control reference value SV in step S334, and then ends the processing.

另一方面，可削減能量消耗量時，則在步驟S332中判定是否可變更ISC 265的流量、速度模型。若可變更ISC 265的流量、速度模型，就在步驟S333中計算新的速度變更率α_V 。On the other hand, when the amount of energy consumption can be reduced, it is determined in step S332 whether or not 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, the new speed change rate α _V is calculated in step S333.

是否可削減能量消耗量，係以例如以下所述的方式來判定。Whether or not the amount of energy consumption can be reduced is determined, for example, in the manner described below.

能量消耗量一般而言，只要減低軋延速度就會減少。此係因為軋延所需的形變速度變小，軋延負荷就變小的緣故。另一方面，在軋延機架的輥與被軋延材之間施加有潤滑油時(潤滑軋延)，軋延速度越增大，潤滑油的膜厚就越變厚，輥與被軋延材之間的摩擦所產生的發熱量就降低，熱軋作業線的能量消耗量就會減少。通常，前者的影響較大。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 rolling), the thicker the rolling speed, the thicker the thickness of the lubricating oil, and the rolling and rolling The amount of heat generated by the friction between the strands is reduced, and the energy consumption of the hot rolling line is reduced. Usually, the former has a greater impact.

因此，在第一次的能量消耗量的計算中朝向使軋延速度降低的方向來決定速度變更率α_V ，然後在第二次以後的能量消耗量的計算中使用速度變更率α_V 及前次及此次的能量消耗量計算結果，而以如下的方式來算出影響係數。Therefore, in the calculation of the first energy consumption amount, the speed change rate α _V is determined in the direction in which the rolling speed is lowered, and then the speed change rate α _V and the former are used in the calculation of the second and subsequent energy consumption amounts. The calculation result of the energy consumption amount of the time and the current time is calculated, and the influence coefficient is calculated as follows.

第一次的能量消耗量的計算，係如式(15)所示，朝向使軋延速度降低的方向來決定速度變更率α_V(old) ：The calculation of the first energy consumption amount is as shown in the formula (15), and the speed change rate α _V(old) is determined in the direction in which the rolling speed is lowered:

α_V(old) =C₂ 　…(15)α _V(old) = C ₂ ... (15)

式(15)中，C₂ 為常數，係為固定值或資料庫的表中的值等。C₂ 係比1.0小之值。In the formula (15), C ₂ is a constant, and is a fixed value or a value in a table of a database. The C ₂ system is less than 1.0.

第二次以後的能量消耗量的計算，則是比較速度變更率α_V 、以及前次計算出的能量消耗量E_P(old) 及此次計算出的能量消耗量E_P(new) ，且以如下之式(16)、式(17)來算出影響係數：The calculation of the energy consumption amount after the second time is the comparison speed change rate α _V and the previously calculated energy consumption amount E _P(old) and the energy consumption amount E _P(new) calculated this time, and The influence coefficient is calculated by the following equations (16) and (17):

前次及此次的能量消耗量的差很小時，亦即滿足以下之式(18)時，或者速度變更率α_V 很小時，亦即滿足以下之式(19)時，即判定為無法削減能量消耗量。此時，在下一次的能量消耗量的計算時在步驟S331中，判定為無法削減能量消耗量，然後在步驟S334中將控制基準值SV予以輸出。When the difference between the previous and current energy consumption amounts is small, that is, when the following formula (18) is satisfied, or when the speed change rate α _V is small, that is, when the following formula (19) is satisfied, it is determined that the reduction cannot be made. Energy consumption. At this time, in the calculation of the next energy consumption amount, it is determined in step S331 that the energy consumption amount cannot be reduced, and then the control reference value SV is output in step S334.

|E_P(new) -E_P(old) |＜C₄ 　…(18)|E _P(new) -E _P(old) |<C ₄ ...(18)

|α_V(old) -1|＜C₅ 　…(19)|α _V(old) -1|<C ₅ ...(19)

其中，C₃ 、C₄ 、C₅ 係依經驗所得到之常數，係為固定值或資料庫的表中之值等。Among them, C ₃ , C ₄ , and C ₅ are empirically obtained constants, which are fixed values or values in a table of a database.

使用計算出的速度變更率α_V(new) ，在步驟S325中修正速度模型，然後在步驟S323中修正ISC 265的流量。藉此，來決定可讓被軋延材100的全長的FDT都保持在目標溫度，且可在目標軋延時間t_Tar 以內之條件下使能量消耗量最小化之速度模型及ISC 265的流量。Using the calculated speed change rate α _V(new) , the speed model is corrected in step S325, and then the flow rate of the ISC 265 is corrected in step S323. Thereby, the flow rate model in which the FDT of the entire length of the rolled material 100 can be maintained at the target temperature and the energy consumption can be minimized within the target rolling time t _Tar can be determined and the flow rate of the ISC 265 can be determined.

至此，流程圖32所示之處理結束。So far, the processing shown in flowchart 32 ends.

在此，參照第8圖來說明在第3圖之步驟S323中使ISC 265的流量變化時之收斂計算的例子。在第8圖的流程圖中，i表示標的點的編號，ns為作為計算對象之標的點編號的最小的編號，ne為最大的編號。另外，j表示精軋機26的軋延機架260的編號，且最終軋延機架編號為N_F 。在第8圖所示的步驟S600至S613中，針對標的點編號ns至ne之所有標的點，使ISC 265的流量變化來使FDT為目標FDT。Here, an example of 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 of Fig. 8, i denotes the number of the target point, ns is the smallest number of the point number as the target of the calculation, and ne is the largest number. Further, j denotes the number of the rolling stand 260 of the finishing mill 26, and the final rolling stand number is N _F . In steps S600 to S613 shown in Fig. 8, for all the target points of the target point numbers ns to ne, the flow rate of the ISC 265 is changed to make the FDT the target FDT.

在步驟S601中，將FDT之計算所必需之標的點i的資料讀入。必需的資料，係至少為精軋機入口側溫度FET_i ^cal 、被軋延材100的尺寸、溫度分佈。此等資料，在已算出時係使用該算出值，在未算出時係使用預測值。In step S601, the data of the target point i necessary for the calculation of the FDT is read. The necessary information is at least the inlet side temperature FET _i ^cal 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.

在步驟S602至S611中，以讓每個標的點其計算溫度FDT_i ^cal 在目標FDT的容許值內之方式，修正ISC 265的流量。In steps S602 to S611, the flow rate of the ISC 265 is corrected in such a manner that each of the target points calculates the temperature FDT _i ^cal within the allowable value of the target FDT.

首先，在步驟S602中，初期排程計算裝置14進行從配置了精軋機入口側溫度計292之精軋機入口側溫度計位置到精軋機26的第一個軋延機架入口側之溫降計算。First, in step S602, the initial schedule calculation means 14 performs temperature drop calculation from the inlet side thermometer position where the finishing mill inlet side thermometer 292 is disposed to the first rolling stand inlet side of the finishing mill 26.

接著，在步驟S603至S607中，從精軋機26的第一個軋延機架260[1]到最終的軋延機架260[N_F ]，計算每個軋延機架的軋延機架出口側溫度SD_j T及軋延機架入口側溫度SE_j T。軋延機架出口側溫度SD_j T，係將因被軋延材100與軋延機架260接觸而損失的溫降量、伴隨著軋延而產生之加工發熱及摩擦熱所造成之溫升量都考慮在內而算出。在步驟S606中，進行將設於精軋機26的軋延機架間之ISC 265的流量、與大氣的熱傳遞所造成之熱損失、以及輻射到大氣的輻射熱都已考慮進去之溫降計算。Next, in steps S603 to S607, from the first rolling stand 260 [1] of the finishing mill 26 to the final rolling stand 260 [N _F ], the rolling stand of each rolling stand is calculated. The outlet side temperature SD _j T and the rolling frame inlet side temperature SE _j T. The exit side temperature SD _j T of the rolling stand is the temperature drop caused by the contact between the rolled web 100 and the rolling stand 260, the temperature rise caused by the processing heat and the frictional heat generated by the rolling. The amount is calculated taking into account. In step S606, the temperature drop calculation in which the flow rate of the ISC 265 provided between the rolling stands of the finishing mill 26, the heat loss due to heat transfer to the atmosphere, and the radiant heat radiated to the atmosphere are taken into consideration is performed.

在步驟S608中，算出在精軋機出口側溫度計位置之FDT的計算溫度FDT_i ^cal 。In step S608, the calculated temperature FDT _i ^cal of the FDT at the thermometer position on the exit side of the finishing mill is calculated.

在步驟S609中，判斷計算溫度FDT_i ^cal 是否在目標FDT的容許值內。若計算溫度FDT_i ^cal 在目標FDT的容許值內，則前進至步驟S612。若並非所有的標的點i的計算都已結束，則在步驟S613中使標的點編號加1後，使處理回到步驟S602。若所有的標的點i的計算都已結束，則使處理結束。In step S609, it is judged whether or not the calculated temperature FDT _i ^cal is within the allowable value of the target FDT. If the calculated temperature FDT _i ^cal is within the allowable value of the target FDT, the process proceeds to step S612. If not all the calculations of the target point i have been completed, the target point number is incremented by one in step S613, and the process returns to step S602. If the calculation of all the target points i has ended, the processing ends.

另一方面，在步驟S609中，若計算溫度FDT_i ^cal 並不在目標FDT的容許值內，則前進至步驟S610，判斷ISC 265的流量是否可變更。ISC 265的流量是否可變更，係依作業條件或操作者介入之可不可變更之資訊，或者ISC 265的流量是否在限度(limit)內而定。在ISC 265的流量可變更時，則在步驟S611中，在可變更的範圍內變更ISC 265的流量。然後，處理回到步驟S602。On the other hand, if the calculated temperature FDT _i ^cal is not within the allowable value of the target FDT in step S609, the process proceeds to step S610, and it is determined whether or not the flow rate of the ISC 265 can be changed. Whether the flow rate of the ISC 265 can be changed depends on the operating conditions or the information that the operator can intervene, or whether the flow of the ISC 265 is within the limit. When the flow rate of the ISC 265 can be changed, the flow rate of the ISC 265 is changed within the changeable range in step S611. Then, the process returns to step S602.

如上述，進行從精軋機入口側溫度計位置到精軋機出口側溫度計位置之溫降計算，就可求出在各標的點之計算溫度FDT_i ^cal 。As described above, the temperature drop calculation from the thermometer position on the inlet side of the finishing mill to the thermometer position on the exit side of the finishing mill is performed, and the calculated temperature FDT _i ^cal at each target point can be obtained.

接著，參照第9圖來說明第3圖之步驟S325中的速度修正方法。以下說明之速度修正方法，係採用軋延時間調整裝置17或能量消耗量調整裝置18所輸出的速度變更率α_V 之方法，進行軋延速度的極限值檢查、及ISC 265的流量的變更量的極限值檢查。Next, the speed correction method in step S325 of Fig. 3 will be described with reference to Fig. 9. The speed correction method described below is a method of performing the limit value check of the rolling speed and the flow rate of the ISC 265 by the method of the speed change rate α _V output by the rolling time adjustment device 17 or the energy consumption amount adjusting device 18. Limit check.

第9圖(a)中以虛線表示的速度模型SP1，係為修正前的速度模型之例。第9圖(a)的橫軸為時間軸，表示各時點。「FET_ON 」為被軋延材100的前端通過精軋機入口側溫度計292之時間，「FDT_ON 」為被軋延材100的前端通過精軋機出口側溫度計293之時間，「FDT_OFF 」為被軋延材100的尾端通過精軋機出口側溫度計293之時間，「捲取機_ON 」為被軋延材100的前端到達捲取機28之時間。The velocity model SP1 indicated 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 each time point. "FET _ON " is the time when the tip end of the rolled material 100 passes through the finishing mill inlet side thermometer 292, and "FDT _ON " is the time when the leading end of the rolled material 100 passes through the finishing mill exit side thermometer 293, and "FDT _OFF " is The time at which the trailing end of the rolled web 100 passes through the finisher exit side thermometer 293, and the "winder _ON " is the time when the leading end of the rolled web 100 reaches the coiler 28.

首先，進行軋延速度的極限值檢查。第9圖(b)顯示採用速度變更率α_V 前後之速度模型。有給予速度變更率α_V 時，就將預測的速度模型加上速度變更率α_V ，來修正速度模型。第9圖(b)中以實線表示的速度模型SP2，係為採用速度變更率α_V 後的速度模型。First, the limit value check of the rolling speed is performed. Figure 9(b) shows the velocity model before and after the speed change rate α _V . When the speed change rate α _V is given, the speed model is corrected by adding the speed change rate α _V 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 α _V .

接著，進行ISC 265的流量的變更量的極限值檢查。此處，係使用第9圖(b)所示之採用速度變更率α_V 後的速度模型SP2，探討在使ISC 265的流量最大及最小之兩個條件下之速度模型變更的必要性。速度模型變更的必要性，係從精軋機入口側溫度計到精軋機出口側溫度計，逐一就每一片段進行溫降計算來調查。第9圖(c)中以實線表示之FDT_Tg 為目標FDT，以虛線表示之FDT_MAX 為在使ISC 265的流量最小之條件下的FDT的計算結果，FDT_MIN 為在使ISC 265的流量最大之條件下的FDT的計算結果。第9圖(c)的橫軸為從各片段的前端算起之位置。在各片段中，若FDT_Tg 在FDT_MAX 與FDT_MIN 之間，就表示可藉由變更ISC 265的流量來在被軋延材100的全長都達成目標FDT。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 _V shown in Fig. 9(b) is used to investigate the necessity of changing the speed model under the two conditions of maximizing and minimizing the flow rate of the ISC 265. The necessity of changing the speed model is from the inlet side thermometer of the finishing mill to the thermometer at the exit side of the finishing mill, and the temperature drop calculation is performed for each segment one by one to investigate. In Fig. 9(c), the FDT _Tg indicated by the solid line is the target FDT, the FDT _MAX 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 _MIN is the flow rate at the ISC 265. The calculation result of FDT under the maximum conditions. The horizontal axis of Fig. 9(c) is the position from the front end of each segment. In each segment, if FDT _{Tg is} between FDT _MAX and FDT _MIN , it means that the target FDT can be achieved over the entire length of the rolled material 100 by changing the flow rate of the ISC 265.

因此，在ISC 265的流量最小之條件下，若有FDT比該目標溫度低之片段存在，就要使速度模型的速度變大來使所有的片段都達成目標溫度。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 speed of the velocity model is increased to make all the segments reach the target temperature.

另一方面，在ISC 265的流量最大之條件下，若有FDT比該目標溫度高之片段存在，就要使速度模型的速度變小來使所有的片段都達成目標溫度。On the other hand, under the condition that the flow rate of the ISC 265 is the largest, if there is a segment in which the FDT is higher than the target temperature, the speed of the velocity model is made small so that all the segments reach the target temperature.

最後，以讓設定的軋延速度在軋延速度的極限值以內之方式來修正速度模型。第9圖(d)中以虛線表示之S_RMAX 為軋延速度的上限值，S_RMIN 為軋延速度的下限值。以讓被軋延材100到達捲取機28之軋延速度不會超過由捲取機28的空轉極限值所決定的通板速度極限值之方式來修正速度模型。到達捲取機28後，則是以讓軋延速度不會超過由驅動軋延機架的馬達的旋轉速度極限值所決定的軋延速度極限值之方式來修正速度模型。另外，在被軋延材100的尾端離開精軋機26的最終軋延機架之速度的極限值已經決定時，係以讓軋延速度不會超過該極限值之方式來修正速度模型。Finally, the velocity model is corrected so that the set rolling speed is within the limit of the rolling speed. In Fig. 9(d), S _RMAX indicated by a broken line is the upper limit of the rolling speed, and S _RMIN is the lower limit of the rolling speed. The velocity model is corrected such that the rolling speed at which the rolled web 100 reaches the coiler 28 does not exceed the through-plate speed limit determined by the idling limit of the coiler 28. Upon reaching the coiler 28, the speed model is corrected such that the rolling speed does not exceed the rolling speed limit value determined by the rotational speed limit of the motor that drives the rolling stand. Further, 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 100 has been determined, the speed model is corrected so that the rolling speed does not exceed the limit value.

依照以上的順序修正速度模型後，就進行第3圖之步驟S323中的ISC 265的流量的修正計算，來決定在被軋延材100的全長都達成目標精軋機出口側溫度之速度模型及流量。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. .

如以上所說明的，根據本發明第一實施形態之控制裝置10，以讓被軋延材100的全長的精軋機出口側溫度都保持在目標溫度之方式，來決定ISC 265的流量及被軋延材100的速度模型，並從決定出的速度模型來正確地算出軋延所需時間t_rm 。然後，以讓算出的軋延所需時間在根據與生產量有關的作業指令或操作者的輸入資訊而計算出的目標軋延時間t_Tar 以內之方式，來修正ISC 265的流量及被軋延材100的速度模型。As described above, according to the control device 10 of the first embodiment of the present invention, the flow rate of the ISC 265 and the rolling are determined so that the temperature at the outlet side of the finishing mill of the entire length of the rolled material 100 is maintained at the target temperature. The speed model of the material 100 is extended, and the time t _rm required for rolling is correctly calculated from the determined speed model. Then, the flow rate of the ISC 265 and the rolling of the ISC 265 are corrected so that the calculated rolling delay time is within the target rolling time t _Tar calculated based on the work order related to the production amount or the operator's input information. The speed model of the material 100.

再來，使用速度模型來計算在複數個標的點之軋延功率，並對計算出的軋延功率進行時間積分來正確地算出軋延所需的能量消耗量。再以在目標軋延時間t_Tar 以內讓能量消耗量最小之方式，來決定ISC 265的流量及速度模型。因此，根據第1圖所示之控制裝置10，就可實現目標的軋延所需時間，且可抑制熱軋作業線20的能量消耗量。Then, the speed model is used to calculate the rolling power at a plurality of target points, and the calculated rolling power is time-integrated to accurately calculate the energy consumption required for rolling. The flow rate and velocity model of the ISC 265 is determined by minimizing the amount of energy consumed within the target rolling time t _Tar . Therefore, according to the control device 10 shown in Fig. 1, the time required for the rolling of the target can be achieved, and the amount of energy consumption of the hot rolling line 20 can be suppressed.

(第二實施形態)(Second embodiment)

第10圖係用來說明利用第1圖所示之熱軋作業線20之控制裝置10來進行之與第二實施形態有關之決定抽出間隔時間之方法之流程圖。Fig. 10 is a flow chart 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.

首先，在步驟S1010中，與參照第3圖之流程圖31說明過之方法一樣，執行被軋延材100的總材數為P之軋延運轉期的計算。接著，在步驟S1020至S1140中，針對軋延運轉期內的被軋延材100[1]至100[P-1]，依照軋延順序執行以下的計算。First, in step S1010, the calculation of the rolling operation period in which the total number of pieces of the rolled material 100 is P is performed in the same manner as the method described with reference to the flowchart of FIG. Next, in steps S1020 to S1140, the following calculations are performed in accordance with the rolling sequence for the rolled products 100 [1] to 100 [P-1] in the rolling operation period.

在步驟S1030中，以已計算完之被軋延材100[a]的抽出間隔時間t_EX [a]與被軋延材100[a+1]的抽出間隔時間t_EX [a+1]之組合，作為第一抽出間隔時間組合。In step S1030, the extraction interval time t _EX [a] of the rolled product 100 [a] and the extraction interval time t _EX [a+1] of the rolled product 100 [a+1] are calculated. Combine as the first extraction interval combination.

在步驟S1040中，能量消耗量調整裝置18使用抽出間隔時間t_EX [a]、抽出間隔時間t_EX [a+1]，針對被軋延材100[a]及被軋延材100[a+1]，進行參照第3圖之流程圖32說明過之能量消耗量之計算，分別算出能量消耗量E_P [a]、E_P [a+1]。然後，在步驟S1050中，如以下般算出能量消耗量E_P [a]與能量消耗量E_P [a+1]之和P_tot ：In step S1040, the energy consumption amount adjusting device 18 uses the extraction interval time t _EX [a] and the extraction interval time t _EX [a+1] for the rolled product 100 [a] and the rolled product 100 [a+ 1] The energy consumption amounts E _P [a] and E _P [a+1] are calculated by referring to the calculation of the energy consumption amount described with reference to the flowchart 32 of Fig. 3. Then, in step S1050, the sum of the energy consumption amount E _P [a] and the energy consumption amount E _P [a+1] P _{tot is} calculated as follows:

P_tot =E_P [a]+E_P [a+1]　…(20)P _tot =E _P [a]+E _P [a+1] ...(20)

接著，步驟S1060中，使被軋延材100[a]的抽出間隔時間t_EX [a]減少微小時間Δt，使被軋延材100[a+1]的抽出間隔時間t_EX [a+1]增加微小時間Δt：Next, in step S1060, the extraction interval time t _EX [a] of the rolled material 100 [a] is decreased by a small time Δt, and the extraction interval time t _EX [a+1] of the rolled material 100 [a+1] is made. ] Increase the tiny time Δt:

t_EX ^SU [a]=t_EX [a]-Δt　…(21)t _EX ^SU [a]=t _EX [a]-Δt (21)

t_EX ^SU [a+1]=t_EX [a+1]+Δt　…(22)t _EX ^SU [a+1]=t _EX [a+1]+Δt (22)

Δt為例如1至5(sec)程度之微小時間。以式(21)及式(22)所表示之抽出間隔時間t_EX ^SU [a]、t_EX ^SU [a+1]之組合作為第二抽出間隔時間組合。Δt is a minute time of, for example, 1 to 5 (sec). The combination of the extraction interval times t _EX ^SU [a] and t _EX ^SU [a+1] expressed by the equations (21) and (22) is used as the second extraction interval combination.

在步驟S1070中，使用抽出間隔時間t_EX ^SU [a]、t_EX ^SU [a+1]，針對被軋延材100[a]及被軋延材100[a+1]，進行參照第3圖之流程圖32說明過之能量消耗量之計算，分別算出能量消耗量E_P ^SU [a]、E_P ^SU [a+1]。然後，在步驟S1080中，算出能量消耗量E_P ^SU [a]與能量消耗量E_P ^SU [a+1]之和P_tot ^SU ：In step S1070, the extraction interval time t _EX ^SU [a], t _EX ^SU [a+1] is used to refer to the third for the rolled material 100 [a] and the rolled material 100 [a+1]. The flowchart of Fig. 32 illustrates the calculation of the energy consumption amount, and calculates the energy consumption amounts E _P ^SU [a] and E _P ^SU [a+1], respectively. Then, in step S1080, the sum of the energy consumption amount E _P ^SU [a] and the energy consumption amount E _P ^SU [a+1] P _tot ^{SU is} calculated:

P_tot ^SU =E_P ^SU [a]+E_P ^SU [a+1]　…(23)P _tot ^SU =E _P ^SU [a]+E _P ^SU [a+1] ...(23)

接著，步驟S1090中，使被軋延材100[a]的抽出間隔時間t_EX [a]增加微小時間Δt，使被軋延材100[a+1]的抽出間隔時間t_EX [a+1]減少微小時間Δt：Next, in step S1090, the extraction interval time t _EX [a] of the rolled product 100 [a] is increased by a small time Δt, and the extraction interval time t _EX [a+1] of the rolled material 100 [a+1] is made. ] Reduce the tiny time Δt:

t_EX ^AD [a]=t_EX [a]+Δt　…(24)t _EX ^AD [a]=t _EX [a]+Δt ...(24)

t_EX ^AD [a+1]=t_EX [a+1]-Δt　…(25)t _EX ^AD [a+1]=t _EX [a+1]-Δt (25)

以式(24)及式(25)所表示之抽出間隔時間t_EX ^AD [a]、t_EX ^AD [a+1]之組合作為第三抽出間隔時間組合。The combination of the extraction interval times t _EX ^AD [a] and t _EX ^AD [a+1] expressed by the equations (24) and (25) is combined as the third extraction interval time.

在步驟S1100中，使用抽出間隔時間t_EX ^AD [a]、t_EX ^AD [a+1]，針對被軋延材100[a]及被軋延材100[a+1]，進行參照第3圖之流程圖32說明過之能量消耗量之計算，分別算出能量消耗量E_P ^AD [a]、E_P ^AD [a+1]。然後，在步驟S1110中，算出能量消耗量E_P ^AD [a]與能量消耗量E_P ^AD [a+1]之和P_tot ^AD ：In step S1100, the extraction interval time t _EX ^AD [a], t _EX ^AD [a+1] is used to refer to the third for the rolled material 100 [a] and the rolled material 100 [a+1]. The flow chart 32 of the figure illustrates the calculation of the energy consumption amount, and calculates the energy consumption amounts E _P ^AD [a] and E _P ^AD [a+1], respectively. Then, in step S1110, the sum of the energy consumption amount E _P ^AD [a] and the energy consumption amount E _P ^AD [a+1] P _tot ^{AD is} calculated:

P_tot ^AD =E_P ^AD [a]+E_P ^AD [a+1]　…(26)P _tot ^AD =E _P ^AD [a]+E _P ^AD [a+1] ...(26)

在步驟S1120中，採用能量消耗量的和P_tot 、P_tot ^SU 、P_tot ^AD 之中能量消耗量最小時的抽出間隔時間的組合，亦即第一、第二、及第三抽出間隔時間組合的任一者。使用所採用的抽出間隔時間組合，來決定ISC 265的流量及速度模型。In step S1120, a combination of the energy consumption amount and the extraction interval time when the energy consumption amount of P _tot , P _tot ^SU , and P _tot ^AD is the smallest, that is, the combination of the first, second, and third extraction intervals is employed. Any of them. The flow and velocity model of the ISC 265 is determined using the combination of extraction intervals used.

依抽出間隔時間的組合而定，會有例如：接下來將處理之被軋延材100[a+1]因為要等前面的被軋延材100[a]的處理而在熱軋作業線20中停止之情況。因而產生被軋延材100[a+1]因為停止時間等而冷卻了之問題。不過，根據上述的抽出間隔時間的決定方法，就可採用最適合的抽出間隔時間的組合。Depending on the combination of the extraction intervals, for example, the rolled product 100 [a+1] to be processed next will be in the hot rolling line 20 because of the treatment of the preceding rolled product 100 [a]. The situation of stopping. Therefore, there is a problem that the rolled product 100 [a+1] is cooled due to the stop time or the like. However, according to the above-described method of determining the extraction interval time, a combination of the most suitable extraction intervals can be employed.

如以上所說明的，根據參照第10圖而說明的抽出間隔時間的決定方法，預定的被軋延材100整體的總抽出間隔時間並不會變化。因此，可決定出在確保生產量的情況下削減預定的被軋延材的總計的能量消耗量之抽出間隔時間。除以上所述者外，皆與第一實施形態實質相同，在此省略重複的記載。As described above, according to the method of determining the extraction interval time described with reference to FIG. 10, the total extraction interval time of the entire planned rolled product 100 does not change. Therefore, it is possible to determine the extraction interval time for reducing the total energy consumption amount of the predetermined rolled material when the production amount is secured. Except for the above, the first embodiment is substantially the same as the first embodiment, and the overlapping description is omitted here.

(第三實施形態)(Third embodiment)

抽出間隔時間t_EX 除了使用式(1)以外，亦可使用以下的式(27)來計算：The extraction interval t _EX can be calculated using the following equation (27) in addition to the equation (1):

t_EX =t_Tgt /P+χ(dh)(dh[a]-dh_av )+χ(1)(1[a]-l_av )+χ(FDTa)(FDTa[a]-FDTa_AV )+χ(R_P (GC))(R_P (GC[a])-R_P (GC)_AV )　…(27)t _EX =t _Tgt /P+χ(dh)(dh[a]-dh _av )+χ(1)(1[a]-l _av )+χ(FDTa)(FDTa[a]-FDTa _AV )+ χ(R _P (GC))(R _P (GC[a])-R _P (GC) _AV ) (27)

式(27)中，dh為軋下量，1為被軋延材長度，FDTa為目標FDT，GC為材種碼。各項目中標註有AV的下標之值，係表示預定的所有被軋延材的平均值。函數RP()係依據材種碼來計算粗軋機23的軋延道次數。In the formula (27), dh is the rolling amount, 1 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 planned rolled products. The function RP() calculates the number of rolling passes of the roughing mill 23 based on the material type code.

另外，函數χ()係計算相對於x的變化之軋延所需時間t的變化：In addition, the function χ() calculates the change in time t required for the rolling of the change with respect to x:

χ(x)=dt/dx　…(28)χ(x)=dt/dx ...(28)

亦即，本發明第三實施形態之控制裝置10中，抽出間隔算出裝置12係計算預定要處理的所有對象被軋延材100[a]的平均軋下量dh_av 、平均軋延材長度l_av 、平均精軋機出口側溫度FDTa_av 。然後，使用對象被軋延材100[a]的軋下量dh[a]與平均軋下量dh_av 之差、軋延材長度1[a]與平均軋延材長度l_av 之差、以及目標精軋機出口側溫度FDTa[a]與平均精軋機出口側溫度FDTa_av 之差，來計算抽出間隔時間。In the control device 10 according to the third embodiment of the present invention, the extraction interval calculation device 12 calculates the average rolling amount dh _{av of the} rolled product 100 [a] to be processed, and the average rolled length l. _Av , average finishing mill outlet side temperature FDTa _av . Then, the difference between the rolling amount dh[a] of the rolled object 100[a] and the average rolling amount dh _av, the difference between the rolled length 1 [a] and the average rolled length l _av , and The difference between the target finishing mill exit side temperature FDTa[a] and the average finishing mill exit side temperature FDTa _av is calculated to calculate the extraction interval time.

根據上述的方法，考慮到各被軋延材的軋下量、軋延材的長度、目標FDT及材種碼之對於抽出間隔時間的影響。對象被軋延材100[a](a=1至P)之以式(27)加以表示之抽出間隔時間t_EX 的總和即為目標總軋延時間t_Tgt ，滿足式(2)、式(3)，所以可決定出達成目標總軋延時間t_Tgt 之抽出間隔時間t_EX 。除以上所述者外，皆與第一實施形態實質相同，在此省略重複的記載。According to the above method, the influence of the rolling amount of each rolled material, the length of the rolled material, the target FDT, and the material type code on the extraction interval time is considered. The sum of the extraction interval time t _EX represented by the formula (27) by the rolled material 100[a] (a=1 to P) is the target total rolling time t _Tgt , which satisfies the formula (2) and the formula (2). 3), so it is possible to determine the withdrawal interval t _{EX of the} target total rolling time t _Tgt . Except for the above, the first embodiment is substantially the same as the first embodiment, and the overlapping description is omitted here.

(第四實施形態)(Fourth embodiment)

第11圖所示之本發明第四實施形態之控制裝置10，係在不具備抽出間隔算出裝置12、目標軋延時間算出裝置13之點與第1圖所示之控制裝置10不同。其他的構成則與第1圖所示之第一實施形態相同。本第四實施形態另外考慮到利用軋機節奏(mill pacing)等之外部的機能來計算目標軋延時間t_Tar 之情況。第11圖所示之控制裝置10，係使用藉由加熱爐21側之具有軋機節奏機能之外部裝置30而計算出之目標軋延時間t_Tar ，來控制熱軋作業線20。The control device 10 according to the fourth embodiment of the present invention shown in Fig. 11 is different from the control device 10 shown in Fig. 1 in that the extraction interval calculation device 12 and the target rolling time calculation device 13 are not provided. 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 t _Tar is calculated using an external function such as mill pacing or the like. The control device 10 shown in Fig. 11 controls the hot rolling line 20 by using the target rolling time t _Tar calculated by the external device 30 having the rolling mill rhythm function on the side of the heating furnace 21 .

在軋延時間調整裝置17，比較從外部裝置30輸入之目標軋延時間t_Tar 、與在軋延時間預測算出裝置16算出之軋延所需時間t_rm ，而以讓軋延所需時間t_rm 在目標軋延時間t_Tar 以內之方式，來計算軋延速度之速度變更率α_V 。根據此速度變更率α_V ，由排程修正裝置15來修正速度模型等。然後，在可削減能量消耗量時，在能量消耗量調整裝置18以讓熱軋作業線20的能量消耗量最小化之方式算出速度變更率α_V 。The rolling time adjustment device 17 compares the target rolling time t _Tar input from the external device 30 with the rolling required time t _rm calculated by the rolling time prediction calculating device 16 to allow the rolling time t The speed change rate α _{V of the} rolling speed is calculated by _rm within the target rolling time t _Tar . Based on the speed change rate α _V , the schedule correction device 15 corrects the velocity model and the like. Then, when the energy consumption amount can be reduced, the energy consumption amount adjusting device 18 calculates the speed change rate α _{V so as to} minimize the energy consumption amount of the hot rolling line 20 .

根據第11圖所示之控制裝置10，就可在軋延所需時間t_rm 在從軋機節奏機能輸入之目標軋延時間t_Tar 以內之條件下，使能量消耗量最小化。除以上所述者外，皆與第一實施形態實質相同，在此省略重複的記載。According to the control device 10 shown in Fig. 11, the energy consumption can be minimized under the condition that the rolling required time t _{rm is} within the target rolling time t _Tar from the rolling mill rhythm function input. Except for the above, the first embodiment is substantially the same as the first embodiment, and the overlapping description is omitted here.

如上述，本發明藉由第一至第四實施形態而記載如上，然而不應將作為此揭示的一部份之論述及圖面理解作是用來限定本發明者。透過此揭示，各種代替實施形態、實施例及運用技術對於本技術領域之業者而言都將變得顯而易知。亦即，本發明理所當然地包含此處未記載的各種實施形態。因此，本發明之技術上的範圍只由就上述的說明來說妥當的申請專利範圍中的發明特定事項所決定。As described above, the present invention is described above by way of the first to fourth embodiments, and the description and drawings of the present invention are not to be construed as limiting the invention. Various alternative embodiments, examples, and operational techniques will become apparent to those skilled in the art from this disclosure. That is, the present invention naturally includes various embodiments not described herein. Therefore, the technical scope of the present invention is determined only by the specific matters of the invention in the scope of the patent application as described above.

10．．．控制裝置10. . . Control device

11．．．作業條件處理裝置11. . . Working condition processing device

12．．．抽出間隔算出裝置12. . . Extraction interval calculation device

13．．．目標軋延時間算出裝置13. . . Target rolling time calculation device

14．．．初期排程計算裝置14. . . Initial scheduling computing device

15．．．排程修正裝置15. . . Scheduling correction device

16．．．軋延時間預測算出裝置16. . . Rolling time prediction calculation device

17．．．軋延時間調整裝置17. . . Rolling time adjustment device

18．．．能量消耗量調整裝置18. . . Energy consumption adjusting device

20．．．熱軋作業線20. . . Hot rolling line

21．．．加熱爐twenty one. . . Heating furnace

22．．．粗軋機入口側去銹皮器twenty two. . . Roughing mill inlet side descaler

23．．．粗軋機twenty three. . . Rough mill

24．．．盤捲箱twenty four. . . Coil box

25．．．精軋機入口側去銹皮器25. . . Finishing side descaling machine

26．．．精軋機26. . . Finishing mill

27．．．冷卻裝置27. . . Cooling device

28．．．捲取機28. . . Coiler

30．．．外部裝置30. . . External device

100．．．被軋延材100. . . Rolled material

260．．．軋延機架260. . . Rolling frame

265．．．ISC265. . . ISC

291．．．粗軋機出口側溫度計291. . . Roughing mill outlet side thermometer

292．．．精軋機入口側溫度計292. . . Finishing mill inlet side thermometer

293．．．精軋機出口側溫度計293. . . Finishing mill exit side thermometer

第1圖係顯示本發明第一實施形態之控制裝置的構成之模式圖。Fig. 1 is a schematic view showing the configuration of a control device according to a first embodiment of the present invention.

第2圖係顯示熱軋作業線的構成例之模式圖。Fig. 2 is a schematic view showing a configuration example of a hot rolling line.

第3圖係用來說明利用本發明第一實施形態之控制裝置來算出控制基準值之方法之流程圖。Fig. 3 is a flow chart for explaining a method of calculating a control reference value by the control device according to the first embodiment of the present invention.

第4圖係顯示第1圖所示之熱軋作業線的軋機周邊的構成例之模式圖。Fig. 4 is a schematic view showing a configuration example of a periphery of a rolling mill of the hot rolling line shown in Fig. 1.

第5圖(a)至(c)係顯示被軋延材的片段編號及標的點編號之模式圖。Fig. 5 (a) to (c) are schematic diagrams showing the segment number and the marked point number of the rolled material.

第6圖(a)至(c)係用來說明本發明第一實施形態之控制裝置進行的軋延時間的決定方法之概念圖。Fig. 6 (a) to (c) are conceptual diagrams for explaining a method of determining the rolling time by the control device according to the first embodiment of the present invention.

第7圖係顯示在被壓延材的長度方向之軋延功率的變化之模式圖。Fig. 7 is a schematic view showing a change in rolling power in the longitudinal direction of the rolled material.

第8圖係用來說明本發明第一實施形態之控制裝置所做的使冷卻噴水器的流量變化之情況的收斂計算之例之流程圖。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 according to the first embodiment of the present invention.

第9圖(a)至(d)係用來說明本發明第一實施形態之控制裝置進行的速度修正方法之例之概念圖。Fig. 9 (a) to (d) are conceptual diagrams for explaining an example of a speed correction method by the control device according to the first embodiment of the present invention.

第10圖係用來說明利用本發明第二實施形態之控制裝置來決定抽出間隔時間之方法之流程圖。Fig. 10 is a flow chart for explaining a method of determining the interval between extractions by the control device of the second embodiment of the present invention.

第11圖係顯示本發明第四實施形態之控制裝置的構成之模式圖。Fig. 11 is a schematic view showing the configuration of a control device according to a fourth embodiment of the present invention.

10．．．控制裝置10. . . Control device

11．．．作業條件處理裝置11. . . Working condition processing device

12．．．抽出間隔算出裝置12. . . Extraction interval calculation device

13．．．目標軋延時間算出裝置13. . . Target rolling time calculation device

14．．．初期排程計算裝置14. . . Initial scheduling computing device

15．．．排程修正裝置15. . . Scheduling correction device

16．．．軋延時間預測算出裝置16. . . Rolling time prediction calculation device

17．．．軋延時間調整裝置17. . . Rolling time adjustment device

18．．．能量消耗量調整裝置18. . . Energy consumption adjusting device

20．．．熱軋作業線20. . . Hot rolling line

Claims (4)

一種熱軋作業線之控制裝置，其中，該熱軋作業線係具備有加熱爐、以及具有連續配置的複數個軋延機架及配置於前述複數個軋延機架間的冷卻噴水器之精軋機者，該控制裝置係具備有：作業條件處理裝置，從作業資訊中抽出作業條件，該作業資訊係包含有針對預定做軋延處理的複數個被軋延材之軋延處理排程；抽出間隔算出裝置，從前述作業條件處理裝置輸入前述作業條件，根據前述作業條件，來算出從前述加熱爐中將前述複數個被軋延材抽出的抽出間隔時間；目標軋延時間算出裝置，使用前述抽出間隔時間及前述作業資訊，來算出屬於前述複數個被軋延材中的一個之對象被軋延材的目標軋延時間；初期排程計算裝置，從前述作業條件處理裝置輸入前述作業條件，根據前述作業條件，來計算前述冷卻噴水器的流量、及在前述熱軋作業線上搬送前述對象被軋延材之軋延速度的速度模型；排程修正裝置，修正前述冷卻噴水器的流量，且在只利用前述冷卻噴水器的流量的修正並無法遍及前述對象被軋延材的全長地讓精軋機出口側溫度都為目標值時、及輸入有與前述速度模型有關之速度變更率時，修正前述速度模型；軋延時間預測算出裝置，使用前述速度模型來算出 前述對象被軋延材的軋延所需時間；軋延時間調整裝置，以讓前述軋延所需時間在前述目標軋延時間以內之方式，算出前述速度變更率，並將算出的前述速度變更率予以輸出至前述排程修正裝置；以及能量消耗量調整裝置，使用前述速度模型來計算出在設定於前述熱軋作業線上的複數個標的點的軋延功率，且對前述軋延功率進行時間積分而得到能量消耗量，並以讓能量消耗量為最小之方式，計算出前述速度變更率，且輸出至前述排程修正裝置，而且，在前述軋延所需時間在前述目標軋延時間以下之範圍內，以讓前述能量消耗量為最小之方式，決定出前述冷卻噴水器的流量及前述速度模型。 A control device for a hot rolling line, wherein the hot rolling line is provided with a heating furnace, and a plurality of rolling stands having a continuous arrangement and a cooling water sprayer disposed between the plurality of rolling stands In the rolling mill, the control device includes: a working condition processing device that extracts a working condition from the work information, the work information includes a rolling process schedule for a plurality of rolled products scheduled to be rolled; The interval calculation device inputs the operation condition from the work condition processing device, and calculates an extraction interval time for extracting the plurality of rolled materials from the heating furnace based on the operation condition; and the target rolling time calculation device uses the aforementioned Extracting the interval time and the operation information to calculate a target rolling time of the rolled product belonging to one of the plurality of rolled materials; the initial scheduling calculation device inputs the working condition from the working condition processing device, Calculating the flow rate of the cooling water sprayer and before transporting on the hot rolling line according to the above operating conditions The speed model of the rolling speed of the object to be rolled and rolled; the scheduling correction device corrects the flow rate of the cooling water sprayer, and the correction of the flow rate using only the cooling water sprayer does not extend over the entire length of the object to be rolled When the temperature at the exit side of the finishing mill is the target value and the speed change rate relating to the speed model is input, the speed model is corrected; the rolling time prediction calculation device calculates the speed model using the speed model The rolling time adjustment device calculates the speed change rate so that the time required for the rolling is within the target rolling time, and changes the calculated speed The rate is output to the schedule correction device; and the energy consumption adjustment device calculates the rolling power of the plurality of target points set on the hot rolling line using the speed model, and performs time on the rolling power The energy consumption is obtained by integrating, and the speed change rate is calculated so as to minimize the energy consumption amount, and is output to the schedule correction device, and the time required for the rolling is below the target rolling time. Within the range, the flow rate of the cooling water sprayer and the speed model are determined so that the amount of energy consumption is minimized. 如申請專利範圍第1項所述之熱軋作業線之控制裝置，其中，前述抽出間隔算出裝置係算出從前述加熱爐將第一被軋延材抽出後到將前述第一被軋延材之後的第二被軋延材抽出為止之第一抽出間隔時間、以及從前述加熱爐將前述第二被軋延材抽出後到將前述第二被軋延材之後的第三被軋延材抽出為止之第二抽出間隔時間，前述能量消耗量調整裝置係分別針對由前述第一抽出間隔時間及前述第二抽出間隔時間所組成之第一抽出間隔時間組合、使前述第一抽出間隔時間增加一定時間且使前述第二抽出間隔時間減少前述一定時間而 成之第二抽出間隔時間組合、以及使前述第一抽出間隔時間減少前述一定時間且使前述第二抽出間隔時間增加前述一定時間而成之第三抽出間隔時間組合，算出在前述第一被軋延材的軋延處理中消耗的第一能量消耗量與在前述第二被軋延材的軋延處理中消耗的第二能量消耗量之能量消耗量之和，然後使用前述能量消耗量之和為最小之前述第一至第三抽出間隔時間組合的任一組合，來決定前述冷卻噴水器的流量及前述速度模型。 The control device for the hot rolling line according to the first aspect of the invention, wherein the extraction interval calculation device calculates the first rolled material from the heating furnace to the first rolled material The first extraction interval time until the second rolled material is extracted, and the third rolled material after the second rolled material is extracted from the heating furnace to the second rolled material after the second rolled material is taken out In the second extraction interval, the energy consumption adjustment device respectively increases the first extraction interval time by a certain time for the first extraction interval time composed of the first extraction interval time and the second extraction interval time. And reducing the aforementioned second extraction interval time by the aforementioned certain time And combining the second extraction interval time and the third extraction interval time in which the first extraction interval time is decreased by the predetermined time and the second extraction interval time is increased by the predetermined time, and the first rolling is calculated. The sum of the first energy consumption consumed in the rolling process of the elongated material and the energy consumption of the second energy consumption consumed in the rolling process of the second rolled material, and then using the sum of the aforementioned energy consumption amounts The flow rate of the aforementioned cooling sprinkler and the aforementioned velocity model are determined for any combination of the aforementioned first to third extraction interval combinations. 如申請專利範圍第1或2項所述之熱軋作業線之控制裝置，其中，前述抽出間隔算出裝置係使用前述對象被軋延材的軋下量與前述複數個被軋延材的平均軋下量之差、前述對象被軋延材的軋延材長度與前述複數個被軋延材的平均軋延材長度之差、及前述對象被軋延材的目標精軋機出口側溫度與前述複數個被軋延材的平均精軋機出口側溫度之差，來計算前述抽出間隔時間。 The control device for the hot rolling line according to the first or second aspect of the invention, wherein the extraction interval calculating device uses the rolling amount of the rolled object to be rolled and the average rolling of the plurality of rolled products. The difference between the amount of the lower 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 of the exit side of the target finishing mill of the object to be rolled and the aforementioned plural The difference in the temperature at the exit side of the average finishing mill of the rolled material is used to calculate the aforementioned extraction interval time. 如申請專利範圍第1項所述之熱軋作業線之控制裝置，其中，使用藉由軋機節奏功能而算出之軋延時間來作為前述目標軋延時間。The control device for the hot rolling line according to the first aspect of the invention, wherein the rolling time calculated by the rolling mill rhythm function is used as the target rolling time.