JP2692544B2 - Method and device for controlling temperature of hot rolling mill - Google Patents
Method and device for controlling temperature of hot rolling millInfo
- Publication number
- JP2692544B2 JP2692544B2 JP5233046A JP23304693A JP2692544B2 JP 2692544 B2 JP2692544 B2 JP 2692544B2 JP 5233046 A JP5233046 A JP 5233046A JP 23304693 A JP23304693 A JP 23304693A JP 2692544 B2 JP2692544 B2 JP 2692544B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- rolling mill
- finishing
- target
- mill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Description
【０００１】[0001]
【産業上の利用分野】この発明は熱間仕上圧延機の出側
温度を均一にする熱間圧延機の温度制御方法及び装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature control method and apparatus for a hot rolling mill which makes the temperature on the delivery side of the hot finishing mill uniform.
【０００２】[0002]
【従来の技術】熱間連続圧延機、例えば熱間連続仕上圧
延機の出側温度は一般にストリップのトップからボトム
にかけての長手方向に変動する。この仕上圧延機の出側
温度を均一にする温度制御については、従来種々の方法
が開示されている。2. Description of the Related Art The outlet temperature of a hot continuous rolling mill, for example, a hot continuous finishing mill, generally fluctuates in the longitudinal direction from the top to the bottom of the strip. Various methods have heretofore been disclosed for temperature control for making the exit side temperature of the finish rolling mill uniform.
【０００３】特開昭５８−１８１４０７号公報には、仕
上圧延機出側の温度計及び各仕上圧延機の圧延圧力を用
いて注水量を変更する温度制御方法が開示されている。
即ち、本方法は、仕上圧延機におけるホットストリップ
の、長手方向の温度分布もしくはそれに対応する圧延圧
力分布に対応付けて、仕上圧延機スタンド間注水量を高
温部もしくはそれに対応する低圧延圧力部で多くしてホ
ットストリップの長手方向の温度変動幅を小さくする熱
延仕上温度制御方法である。Japanese Unexamined Patent Publication (Kokai) No. 58-181407 discloses a temperature control method in which the water injection amount is changed by using a thermometer on the delivery side of the finishing rolling mill and the rolling pressure of each finishing rolling mill.
That is, the present method, the hot strip in the finish rolling mill, in association with the temperature distribution in the longitudinal direction or the rolling pressure distribution corresponding thereto, the amount of water injection between the stands of the finishing rolling mill at a high temperature portion or a low rolling pressure portion corresponding thereto. This is a hot rolling finish temperature control method in which the temperature fluctuation width in the longitudinal direction of the hot strip is reduced to a large extent.
【０００４】この公報においては、仕上圧延機出側の温
度に基づいて、前述のごとく、仕上圧延機スタンド間注
水量を変更しているが、圧延スタンド間の冷却装置は鋼
板の表面に発生する酸化鉄除去の機能をもっているた
め、使用できるスプレーが限定されるなど、さらに後段
スタンドでは板厚が薄くスタンド間のスプレーのオンオ
フにより板厚変動が大きく生じることより通常スタンド
間のスプレーの使用は上流スタンドに限定されることが
多い。ところが圧延機出側から上流スタンドへ注水指令
を出力しても注水してから温度測定までの時間が長く良
好な温度制御が得られないという問題がある。In this publication, the water injection amount between the stands of the finish rolling mill is changed based on the temperature on the delivery side of the finish rolling mill as described above, but the cooling device between the rolling stands occurs on the surface of the steel sheet. Since it has a function to remove iron oxide, the sprays that can be used are limited.In addition, the plate thickness is thin in the latter stand, and the plate thickness fluctuates greatly by turning the spray between the stands on and off. Often limited to stands. However, even if a water injection command is output from the rolling mill exit side to the upstream stand, there is a problem in that it takes a long time from the water injection until the temperature measurement and good temperature control cannot be obtained.
【０００５】特開昭５８−２３５０９号公報では、第３
スタンド出側圧延材温度を測定し圧延速度を変更する熱
間圧延機の温度制御方法及び装置が提案されている。即
ち、加熱された圧延材を圧延する熱間圧延機の圧延温度
を操作して前記熱間圧延機の出側圧延材温度を制御する
熱間圧延機の温度制御方法に於いて、前記出側圧延材温
度の目標温度と前記出側圧延材温度の温度偏差により前
記圧延速度を操作する温度制御手段を設け、前記圧延速
度の変化から前記出側圧延材温度の変化までの伝達関数
を一次遅れ系として処理し、前記熱間圧延機の入側圧延
材温度と圧延スタンドのロール周速度または前記圧延材
の前記圧延速度により前記温度制御手段の増幅率を温度
制御系のループゲインが一定となる様に補正する様に構
成した熱間圧延機の温度制御方法であり、更に、In Japanese Patent Laid-Open No. 58-23509, the third
There has been proposed a temperature control method and apparatus for a hot rolling mill, which measures the temperature of the rolled material on the stand exit side and changes the rolling speed. That is, in the temperature control method of the hot rolling mill that controls the rolling temperature of the hot rolling mill by operating the rolling temperature of the hot rolling mill that rolls the heated rolling material, A temperature control means for operating the rolling speed depending on the temperature deviation between the target temperature of the rolled material and the temperature of the outgoing rolled material is provided, and the transfer function from the change of the rolling speed to the change of the outgoing rolled material temperature is delayed by a first order. As a system, the loop gain of the temperature control system becomes constant with the amplification factor of the temperature control means depending on the inlet side rolling material temperature of the hot rolling mill and the roll peripheral speed of the rolling stand or the rolling speed of the rolling material. Is a method for controlling the temperature of a hot rolling mill configured to correct the
【０００６】加熱された圧延材を圧延する熱間圧延機の
圧延温度を操作して前記熱間圧延機の出側圧延材温度を
制御する熱間圧延機の温度制御装置に於いて、前記出側
圧延材温度の目標温度信号と前記出側圧延材温度検出信
号との温度偏差信号により前記圧延速度を操作する温度
制御回路を設け、前記熱間圧延機の入側圧延材温度検出
信号と圧延スタンドのロール周速度検出信号または前記
圧延材の前記圧延速度検出信号により前記温度制御回路
の時定数を温度制御系のループゲインが一定となる様に
補正する演算制御回路とで構成した熱間圧延機の温度制
御装置である。In the temperature control device of the hot rolling mill for controlling the temperature of the outgoing rolling material of the hot rolling mill by controlling the rolling temperature of the hot rolling mill for rolling the heated rolled material, A temperature control circuit for operating the rolling speed according to a temperature deviation signal between the target temperature signal of the side rolled material temperature and the output side rolled material temperature detection signal is provided, and the incoming side rolled material temperature detection signal and rolling of the hot rolling mill are provided. Hot rolling comprising an operation control circuit that corrects the time constant of the temperature control circuit so that the loop gain of the temperature control system becomes constant by the roll peripheral speed detection signal of the stand or the rolling speed detection signal of the rolled material. It is the temperature control device of the machine.
【０００７】この公報では、第３スタンド出側で温度を
計測し、圧延速度を変更しているが、仕上圧延機にて良
好な材質を確保するには、圧延加工完了時の温度が重要
であることから第３スタンド出側における温度計測だけ
では十分な材質が得られないことがある。また圧延速度
は熱間圧延ラインでは材料板厚や仕上圧延機後の冷却装
置に与える影響が大きく速度を変更することは現実的で
ない。[0007] In this publication, the temperature is measured on the outlet side of the third stand and the rolling speed is changed. However, the temperature at the completion of rolling is important in order to secure a good material in the finish rolling mill. Therefore, it may not be possible to obtain a sufficient material only by measuring the temperature on the outlet side of the third stand. Further, the rolling speed has a great influence on the material thickness and the cooling device after the finish rolling mill in the hot rolling line, and it is not realistic to change the rolling speed.
【０００８】さらに特開昭６２−６７１３号公報には、
熱間圧延直後の圧延材の温度を制御するに際し、各圧延
スタンドから得られる圧下位置、圧延荷重、入側板厚の
圧延データを用いて各スタンドの圧延材の温度変化量を
求め、該温度変化量に基づいて各スタンド間の冷却水量
を求め、該冷却水量に応じ各スタンド間の冷却装置を制
御して圧延材の温度を長手方向に均一にすることを特徴
とする熱間圧延機の圧延材出側温度方法が開示されてい
る。Further, Japanese Patent Laid-Open No. 62-6713 discloses that
When controlling the temperature of the rolled material immediately after hot rolling, the rolling position obtained from each rolling stand, the rolling load, and the rolling data of the inlet side plate thickness are used to determine the temperature change amount of the rolled material of each stand, and the temperature change The amount of cooling water between the stands is determined based on the amount, and the cooling device between the stands is controlled according to the amount of cooling water to make the temperature of the rolled material uniform in the longitudinal direction. A material exit temperature method is disclosed.
【０００９】この公報においては、圧下位置、圧延荷重
等から材料温度を計算しているが、圧延現象において
は、材料成分、ロール温度、ロール材質等外的要因によ
り材料温度は大きく異なり、本公報に記載の式では精度
良く最良温度を推定することは困難である。さらに本方
法では基準値からの偏差形式で記述されているため材料
スキッド等による材料内温度変動をなくすことは可能で
あるが、その結果の温度が目標値である保証がない。In this publication, the material temperature is calculated from the rolling position, rolling load, etc., but in the rolling phenomenon, the material temperature greatly differs due to external factors such as material composition, roll temperature, roll material, etc. It is difficult to accurately estimate the best temperature with the formula described in (3). Further, since the method is described in the form of deviation from the reference value, it is possible to eliminate the temperature variation in the material due to the material skid or the like, but there is no guarantee that the resulting temperature is the target value.
【００１０】また特開平４−１３４１４号公報では、複
数のスタンドを有する熱間連続圧延機に被圧延材を通板
する際、被圧延材の板厚を制御する熱間連続圧延機にお
ける通板時の板厚制御方法において、少なくとも２個所
以上のスタンド間に厚み計と温度計を設置し、被圧延材
の先端が通過した時点で被圧延材の板厚及び表面温度を
検出し、この温度検出値から次スタンドロールバイト内
での被圧延材の圧延温度を予測し、この被圧延材の圧延
温度の予測値と予め設定された目標値との偏差を板厚の
検出値と予め設定された目標値との偏差に基づいて次ス
タンドの圧下位置を修正する際に、被圧延材の形状が乱
れることが予測される場合には圧下位置修正量を制限す
ることを連続して行うことを特徴とする熱間連続圧延機
における通板時の板厚制御方法が開示されている。しか
しながら、この公報においては、スタンド間に温度計を
設置する提案を行っているが、本方法は通板時の板厚制
御方法であり、温度制御に関しては言及していない。Further, in JP-A-4-13414, when a material to be rolled is passed through a hot continuous rolling mill having a plurality of stands, the strip is controlled in the hot continuous rolling mill to control the thickness of the material to be rolled. In the plate thickness control method at this time, a thickness gauge and a thermometer are installed between at least two stands, and when the tip of the rolled material passes, the plate thickness and surface temperature of the rolled material are detected, and this temperature is detected. The rolling temperature of the material to be rolled in the next stand roll bite is predicted from the detected value, and the deviation between the predicted value of the rolling temperature of the material to be rolled and the preset target value is preset as the detected value of the plate thickness. When it is predicted that the shape of the material to be rolled will be disturbed when the rolling position of the next stand is corrected based on the deviation from the target value, it is necessary to continuously limit the rolling position correction amount. Characteristic of continuous hot rolling mill The thickness control method is disclosed. However, although this publication proposes to install a thermometer between the stands, this method is a method for controlling the plate thickness at the time of passing the plate, and does not mention the temperature control.
【００１１】[0011]
【発明が解決しようとする課題】本発明は、以上の従来
技術の問題点を解決し必要な仕上目標温度を迅速に得ら
れる温度制御が可能な熱間圧延機の温度制御方法及び装
置を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention provides a temperature control method and apparatus for a hot rolling mill capable of solving the above problems of the prior art and controlling the temperature so as to quickly obtain a required finishing target temperature. The purpose is to do.
【００１２】[0012]
【課題を解決するための手段】本発明の第１は、熱間圧
延機の温度制御方法において、連続式仕上圧延機内並び
に出側に温度計を及び仕上圧延機内に冷却装置を備え、
前記仕上圧延機内温度目標値として、仕上圧延機出側目
標温度と仕上実測温度及び通板目標温度と通板実測速度
の１次式を下記に示す如く与え、該目標値と温度計測値
との偏差により前記冷却装置の注水量を変更することを
特徴とする熱間圧延機の温度制御方法である。According to a first aspect of the present invention, in a temperature control method for a hot rolling mill, a thermometer is provided inside and outside the continuous finishing mill, and a cooling device is provided inside the finishing mill.
As the temperature target value in the finish rolling mill, a linear expression of the finish rolling mill output side target temperature, the finish actual measurement temperature, and the strip passing target temperature and the strip passing actual velocity is given as follows, and the target value and the temperature measurement value are It is a temperature control method for a hot rolling mill, characterized in that the water injection amount of the cooling device is changed according to the deviation.
【００１３】[0013]
【数３】 (Equation 3)
【００１４】また、本発明の第２は、熱間圧延機の温度
制御装置において、連続式仕上圧延機内並びに出側に温
度計を及び仕上圧延機内に冷却装置を設け、前記仕上圧
延機内温度目標値を仕上圧延機出側目標温度と仕上実測
温度及び通板目標温度と通板実測速度の１次式を下記に
示す計算式により演算するための演算装置と、圧延機内
温度計により計算した温度により偏差を演算制御するた
めの演算制御装置と、仕上圧延機出側計測温度と目標値
との偏差を演算するための制御量演算装置を設け、前記
目標値と温度計測値との偏差により前記冷却装置の注水
量を制御することを特徴とする熱間圧延機の温度制御装
置である。A second aspect of the present invention is, in a temperature control device for a hot rolling mill, a thermometer is provided inside and outside the continuous finishing rolling mill, and a cooling device is provided inside the finishing rolling mill. The value calculated by the calculation device shown below and the calculation device for calculating the linear expressions of the target temperature of the finishing rolling mill, the measured actual temperature of the finishing mill, and the target temperature of the strip and the actual measured speed of the strip. An arithmetic and control unit for arithmetically controlling the deviation by means of the above, and a control amount arithmetic unit for arithmetically operating the deviation between the finish rolling mill outlet side measured temperature and the target value are provided, and by the deviation between the target value and the temperature measured value, It is a temperature control device for a hot rolling mill, which is characterized by controlling a water injection amount of a cooling device.
【００１５】[0015]
【数４】 (Equation 4)
【００１６】[0016]
【作用】本発明は、前記発明の課題を解決するために仕
上圧延機内に一個以上の温度測定装置を備え本装置に対
し仕上出側温度が材質上最適となる目標値を以下の式の
ように与えるものである。According to the present invention, in order to solve the above-mentioned problems, one or more temperature measuring devices are provided in the finishing rolling mill, and the target value at which the finishing outlet temperature is optimal for the material is expressed by the following formula. To give to.
【００１７】[0017]
【数５】 (Equation 5)
【００１８】[0018]
【数６】 (Equation 6)
【００１９】本目標値に対し温度計で実測した温度との
偏差を求め制御量演算装置（ＰＩＤ演算）の出力で温度
計に近接した冷却装置の注水量を変更することにより制
御装置と検出装置の遅れ時間を少なくでき高精度な温度
制御が可能となり且つ圧延機出側の鋼帯の温度を一定に
保つことが可能となる。The control device and the detection device are obtained by obtaining the deviation from the temperature actually measured by the thermometer with respect to this target value and changing the water injection amount of the cooling device close to the thermometer by the output of the control amount calculation device (PID calculation). It is possible to reduce the delay time of, the temperature control can be performed with high accuracy, and the temperature of the steel strip on the delivery side of the rolling mill can be kept constant.
【００２０】[0020]
【実施例】次に、本発明の実施例について図１を用いて
説明する。図１は本発明の実施態様例である温度制御装
置の構成の説明図、図２は制御フローの説明図である。
図において、１は仕上圧延機出側温度計、２は仕上圧延
機内温度計、３〜６は仕上圧延機各スタンド間の冷却装
置、７は仕上圧延機内温度目標値を演算するための演算
装置、８は７で与えられた目標値と仕上圧延機内温度計
２により計測した仕上圧延機出側温度により偏差を演算
制御するための制御量演算装置、９は仕上圧延機出側温
度計１で計測した仕上出側温度と目標値との偏差を演算
するための制御量演算装置、１０〜１２は仕上圧延機で
ある。EXAMPLE Next, an example of the present invention will be described with reference to FIG. FIG. 1 is an explanatory diagram of a configuration of a temperature control device according to an embodiment of the present invention, and FIG.
In the figure, 1 is a thermometer on the exit side of the finish rolling mill, 2 is a thermometer inside the finish rolling mill, 3 to 6 are cooling devices between the stands of the finish rolling mill, and 7 is a computing device for computing a target temperature inside the finishing rolling mill. , 8 is a control amount calculation device for calculating and controlling the deviation based on the target value given by 7 and the finish rolling mill outlet side temperature measured by the finish rolling mill internal temperature meter 2, and 9 is a finish rolling mill outlet side thermometer 1. Control quantity computing devices for computing the deviation between the measured finish outlet temperature and the target value, and 10-12 are finish rolling mills.
【００２１】次に制御量演算装置８は圧延機内温度目標
値演算装置７で与えられた値と仕上圧延機内温度計２に
より計算した温度により偏差を演算し例えばＰＩＤコン
トローラの様な制御演算装置により制御量を演算しスタ
ンド間スプレー３〜６に指令を出力する。また仕上圧延
機出側温度計１からの制御量演算装置９は仕上圧延機出
側温度計１で計測した仕上圧延機出側温度と目標値の偏
差を演算する装置で仕上圧延機内温度目標値演算装置７
の中間温度の目標値の補正項を与える装置である。Next, the control amount computing device 8 computes a deviation based on the value given by the rolling mill internal temperature target value computing device 7 and the temperature calculated by the finishing rolling mill thermometer 2, and a control computing device such as a PID controller, for example. The control amount is calculated and a command is output to the sprays 3 to 6 between the stands. Further, the control amount computing device 9 from the finish rolling mill outlet side thermometer 1 is a device for computing the deviation between the finish rolling mill outlet side temperature measured by the finish rolling mill outlet side thermometer 1 and the target value. Arithmetic device 7
This is a device that gives a correction term for the target value of the intermediate temperature of.
【００２２】従来は、仕上圧延機出側温度計１の温度が
目標値となるように複数の熱間圧延機１０，１１，１２
のコントロールを行っていた。本発明では仕上圧延機内
に設置した温度計２を圧延機のスタンド間に１ケ所以上
設置している。この仕上圧延機内温度計２は鋼板上面若
しくは下面より計測を行う。Conventionally, a plurality of hot rolling mills 10, 11, 12 are arranged so that the temperature of the exit side thermometer 1 of the finish rolling mill reaches a target value.
Was controlling. In the present invention, the thermometer 2 installed in the finish rolling mill is installed in one or more places between the stands of the rolling mill. The thermometer 2 in the finish rolling mill measures from the upper surface or the lower surface of the steel plate.
【００２３】本発明は、仕上圧延機内温度目標値Ｔmaim
として、仕上圧延機出側目標温度Ｔfaimと仕上実測温度
Ｔfact及び通板目標温度Ｔf と通板実測速度の下記の１
次式で与え、前記仕上圧延機内温度計に対する目標値Ｔ
maimを与え、該目標値Ｔmaimと温度計測値Ｔmactとの偏
差により、図２の制御フローの説明図に示す如く制御
し、前記冷却装置の注水量を変更するものである。In the present invention, the target temperature value T maim in the finish rolling mill is set.
The following 1 of the target temperature T faim of the finishing rolling mill, the actual measurement temperature T fact of the finish rolling, and the target strip running temperature T f and the actual strip running speed are given below.
The target value T for the thermometer in the finish rolling mill is given by the following equation:
Maim is given, and control is performed as shown in the explanatory diagram of the control flow of FIG. 2 according to the deviation between the target value T maim and the temperature measurement value T mact to change the water injection amount of the cooling device.
【００２４】[0024]
【数７】 (Equation 7)
【００２５】また本仕上圧延機内温度計２は可能な限り
仕上圧延機出側温度計１と圧延機の位置関係が同一の位
置関係にあることが望ましいが、本制御法では最終的に
仕上圧延機出側温度により補正が行われるので必ずしも
同一でなくても同じ効果は得られる。スタンド間に設置
した冷却装置３，４，５，６は水などの冷却媒体を用い
スプレー方式等により冷却する。図３に圧延機内温度目
標値演算装置７を用いた演算例を示す。制御開始の点で
はＴmaimはＴfaim＋Ｔm-f のみの項となる。の区間で
は速度が増加するにともないFurther, it is desirable that the temperature gauge 2 in the finish rolling mill has the same positional relationship between the exit thermometer 1 of the finish rolling mill and the rolling mill as much as possible. Since the correction is performed according to the exit temperature, the same effect can be obtained even if it is not necessarily the same. The cooling devices 3, 4, 5, 6 installed between the stands are cooled by a spray method using a cooling medium such as water. FIG. 3 shows a calculation example using the target temperature value calculating device 7 in the rolling mill. At the start of control, T maim is a term of T faim + T mf only. As the speed increases in the section
【００２６】[0026]
【数８】 (Equation 8)
【００２７】の区間ではＴf の実績が目標値に対し偏
差を生じたためＰＩＤ演算装置によりＴmaimが変化す
る。図４に本発明の制御を対象材として一般炭素鋼材
（４．０mm×１６８３mm）について実施した場合の仕上
圧延機出側温度を示す。図４に示す如く、制御（切）の
場合は、材料先端から後端にかけて加速のために温度が
上昇しているのに対し本制御を適用した場合は、同一の
圧延条件であっても目標値に制御されていることが判
る。In the section, since the actual value of T f is deviated from the target value, T maim is changed by the PID arithmetic unit. FIG. 4 shows the temperature at the exit side of the finishing rolling mill when the control of the present invention is carried out for a general carbon steel material (4.0 mm × 1683 mm). As shown in FIG. 4, in the case of control (off), the temperature rises from the front end to the rear end of the material due to acceleration, whereas when this control is applied, even if the rolling conditions are the same, the target You can see that the value is controlled.
【００２８】図５に、本発明による制御を同一圧延条件
の材料に適用したときの統計データによる評価示す。こ
こで、Ｎはテスト本数、Ｘmeanは実績温度−目標温度の
長手方向にわたる平均値、オンゲージ率は全長のうち目
標値に対し±１０℃，±１５℃以内に入っている部分の
割合を示している。図５に示した如く、本発明の制御法
を適用することにより、実績温度−目標温度の長手方向
にわたる平均値Ｘmeanは３．５℃低下し、±１０℃オン
ゲージ率，±１５℃オンゲージ率ともに夫々５２．１％
から７８．９％，８２．１％から９４．５％に改善され
ている。FIG. 5 shows an evaluation based on statistical data when the control according to the present invention is applied to materials under the same rolling conditions. Here, N is the number of tests, X mean is the average value of the actual temperature-the target temperature over the longitudinal direction, and the on-gauge ratio is the ratio of the part within ± 10 ° C and ± 15 ° C of the target value in the total length. ing. As shown in FIG. 5, by applying the control method of the present invention, the average value X mean of the actual temperature-the target temperature in the longitudinal direction is lowered by 3.5 ° C., and the on-gauge ratio is ± 10 ° C. and the on-gauge ratio is ± 15 ° C. 52.1% each
To 78.9% and from 82.1% to 94.5%.
【００２９】[0029]
【発明の効果】本発明の熱間圧延機の温度制御方法及び
装置によれば、圧延機内に温度計を設け、本温度計に対
し仕上圧延機出側温度を所定の目標温度となる様な設定
を与える構成としたので、温度検出器から制御装置まで
短い時間で制御できるため鋼帯長手方向温度が非常に均
一になり且つ仕上出側温度が所定の目標温度となり良好
な材質の鋼帯が得られる効果を奏するものである。According to the temperature control method and apparatus of the hot rolling mill of the present invention, a thermometer is provided in the rolling mill so that the finish rolling mill outlet side temperature becomes a predetermined target temperature with respect to this thermometer. Since the setting is provided, the temperature detector to the control device can be controlled in a short time, so that the temperature in the longitudinal direction of the steel strip becomes extremely uniform and the finishing outlet temperature becomes a predetermined target temperature, so that a steel strip of a good material can be obtained. The effect is obtained.
【図１】本発明の実施態様例である温度制御装置の構成
の説明図である。FIG. 1 is an explanatory diagram of a configuration of a temperature control device that is an embodiment example of the present invention.
【図２】本発明の実施例における制御フローの説明図で
ある。FIG. 2 is an explanatory diagram of a control flow in the embodiment of the present invention.
【図３】本発明の実施例における目標値演算装置を用い
た演算例の説明図である。FIG. 3 is an explanatory diagram of a calculation example using the target value calculation device according to the embodiment of the present invention.
【図４】本発明の実施例における仕上圧延機出側温度の
説明図である。FIG. 4 is an explanatory diagram of a finish rolling mill outlet temperature in an example of the present invention.
【図５】本発明を用いた場合の結果の統計結果の説明図
である。FIG. 5 is an explanatory diagram of statistical results of results when the present invention is used.
１ 圧延機出側温度計 ２ 仕上圧延機内温度計 ３ 冷却装置 ４ 冷却装置 ５ 冷却装置 ６ 冷却装置 ７ 圧延機内温度目標値演算装置 ８ 制御量演算装置 ９ 仕上出側温度計からの制御量演算装置 １０ 仕上圧延機 １１ 仕上圧延機 １２ 仕上圧延機 1 Rolling Mill Outgoing Side Thermometer 2 Finishing Rolling Inside Thermometer 3 Cooling Device 4 Cooling Device 5 Cooling Device 6 Cooling Device 7 Rolling Mill Inside Temperature Target Value Calculator 8 Controlled Volume Calculator 9 Controlled Volume Calculator from Finishing Side Thermometer 10 Finishing Rolling Machine 11 Finishing Rolling Machine 12 Finishing Rolling Machine
Claims (2)
続式仕上圧延機内並びに出側に温度計を及び仕上圧延機
内に冷却装置を備え、前記仕上圧延機内温度目標値とし
て、仕上圧延機出側目標温度と仕上実測温度及び通板目
標温度と通板実測速度の１次式を下記に示す如く与え、
該目標値と温度計測値との偏差により前記冷却装置の注
水量を変更することを特徴とする熱間圧延機の温度制御
方法。 【数１】 1. A temperature control method for a hot rolling mill, comprising a thermometer in the continuous finishing rolling mill and at the outlet side and a cooling device in the finishing rolling mill, and the finishing rolling mill output as a target temperature value in the finishing rolling mill. The linear expressions of the side target temperature and the measured finish temperature, and the plate passing target temperature and the plate passing measured speed are given as follows.
A temperature control method for a hot rolling mill, characterized in that a water injection amount of the cooling device is changed according to a deviation between the target value and a temperature measurement value. (Equation 1)
続式仕上圧延機内並びに出側に温度計を及び仕上圧延機
内に冷却装置を設け、前記仕上圧延機内温度目標値を仕
上圧延機出側目標温度と仕上実測温度及び通板目標温度
と通板実測速度の１次式を下記に示す計算式により演算
するための演算装置と、圧延機内温度計により計算した
温度により偏差を演算制御するための演算制御装置と、
仕上圧延機出側計測温度と目標値との偏差を演算するた
めの制御量演算装置を設け、前記目標値と温度計測値と
の偏差により前記冷却装置の注水量を制御することを特
徴とする熱間圧延機の温度制御装置。 【数２】 2. A temperature controller for a hot rolling mill, wherein a thermometer is provided inside and on the exit side of the continuous finishing mill and a cooling device is provided inside the finishing mill, and the target temperature value in the finishing rolling mill is set to the exit side of the finishing mill. To calculate and control the deviation based on the target temperature, the actual measurement temperature for finishing, and the primary temperature of the strip running and the linear equation of the strip running speed by the formula shown below, and the temperature calculated by the thermometer inside the rolling mill. Arithmetic control device of
It is characterized in that a control amount calculation device for calculating a deviation between a finish rolling mill outlet side measured temperature and a target value is provided, and the water injection amount of the cooling device is controlled by the deviation between the target value and the temperature measurement value. Temperature controller for hot rolling mill. (Equation 2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5233046A JP2692544B2 (en) | 1993-09-20 | 1993-09-20 | Method and device for controlling temperature of hot rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5233046A JP2692544B2 (en) | 1993-09-20 | 1993-09-20 | Method and device for controlling temperature of hot rolling mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0788522A JPH0788522A (en) | 1995-04-04 |
| JP2692544B2 true JP2692544B2 (en) | 1997-12-17 |
Family
ID=16948955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5233046A Expired - Lifetime JP2692544B2 (en) | 1993-09-20 | 1993-09-20 | Method and device for controlling temperature of hot rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2692544B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10156008A1 (en) | 2001-11-15 | 2003-06-05 | Siemens Ag | Control method for a finishing train upstream of a cooling section for rolling hot metal strip |
-
1993
- 1993-09-20 JP JP5233046A patent/JP2692544B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0788522A (en) | 1995-04-04 |
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