JP2575585B2 - Meander control method of plate in rolling mill - Google Patents
Meander control method of plate in rolling millInfo
- Publication number
- JP2575585B2 JP2575585B2 JP5087884A JP8788493A JP2575585B2 JP 2575585 B2 JP2575585 B2 JP 2575585B2 JP 5087884 A JP5087884 A JP 5087884A JP 8788493 A JP8788493 A JP 8788493A JP 2575585 B2 JP2575585 B2 JP 2575585B2
- Authority
- JP
- Japan
- Prior art keywords
- amount
- meandering
- differential pressure
- differential
- rolling
- 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.)
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- Control Of Metal Rolling (AREA)
Description
【０００１】[0001]
【技術分野】本発明は、圧延機における板の蛇行制御方
法に係り、特に高応答性を有する圧下装置を備えていな
い圧延機にあっても、高精度に板の蛇行を制御し得る方
法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the meandering of a plate in a rolling mill, and more particularly to a method for controlling the meandering of a plate with high accuracy even in a rolling mill without a rolling device having high responsiveness. Things.
【０００２】[0002]
【背景技術】従来から、圧延機における所定の金属板材
の連続的な圧延に際して、ロール軸方向において両端と
なる操作側と駆動側たる左右のロール間隙の差や被圧延
板材の左右の硬度差等によって、左右の圧下率に差が生
じて、被圧延板材に蛇行が生じるようになる。そして、
この圧延中に発生する板の蛇行は、製品品質の低下を招
くばかりでなく、場合によっては板破断、圧延不能に陥
り、生産性を著しく阻害する問題を惹起する。2. Description of the Related Art Conventionally, in continuous rolling of a predetermined metal plate material in a rolling mill, a difference in a gap between left and right rolls on both sides of an operation side and a driving side in a roll axis direction, a difference in hardness between left and right sides of a rolled sheet material, and the like. As a result, a difference occurs between the left and right reduction ratios, and the rolling target sheet material is meandered. And
The meandering of the sheet generated during the rolling not only lowers the quality of the product, but also causes the sheet to break or to be unable to be rolled in some cases, causing a problem that productivity is significantly impaired.
【０００３】このため、かかる圧延機における板の蛇行
制御に関して、従来から、種々検討が為されて来てお
り、その代表的な方法として、ａ）板の蛇行により、圧
延機の左右の荷重（圧延）に差が生じるという現象か
ら、左右の圧延差荷重を検出して、その量に応じて、圧
下装置を用いて蛇行した側のロール間隙を狭くして、蛇
行を修正する方法や、ｂ）圧延機の入側に、板の蛇行量
を直接検出することの出来る蛇行センサを設置して、そ
の検出された蛇行量に応じて、圧下装置により蛇行した
側のロール間隙を狭くして、蛇行を修正したりする方法
等が、提案されている。For this reason, various studies have been made on the meandering control of a plate in such a rolling mill, and a typical method is as follows. From the phenomenon that a difference occurs in rolling), the difference between the right and left rolling loads is detected, and according to the amount, the roll gap on the meandering side is narrowed using a rolling-down device to correct the meandering. ) A meandering sensor that can directly detect the meandering amount of the plate is installed on the entrance side of the rolling mill, and the roll gap on the meandering side is reduced by the rolling-down device according to the detected meandering amount. Methods for correcting meandering and the like have been proposed.
【０００４】しかしながら、蛇行は、その特性上、一度
生じると急速に成長し、被害を大きくするものであると
ころから、従来の方法においては、そのような蛇行を抑
制するために、圧下装置には高応答性が要求され、具体
的には油圧圧下装置が必要とされ、この為、応答性の悪
い従来の電動圧下による圧延機では、充分な蛇行修正効
果が得られないという問題があった。[0004] However, the meandering, due to its characteristics, grows rapidly once it occurs and increases the damage. Therefore, in the conventional method, in order to suppress such meandering, a rolling device is provided. High responsiveness is required, and specifically, a hydraulic pressure reduction device is required. For this reason, there is a problem that a conventional meandering rolling mill with poor responsiveness cannot obtain a sufficient meandering correction effect.
【０００５】このような従来の方法における問題を解決
する一つの試みとして、特開昭５６−１１１０７号公報
には、ベンダ圧力を用いた板の蛇行防止制御方法が提案
されている。しかして、この方法は、圧延機の左右の圧
延荷重を検出し、その差荷重が零となるようにベンダを
調節することで、蛇行の進行度合いを抑制するようにし
たものに過ぎず、そのために、一定の効果は期待出来る
ものの、ベンダ圧力の調整を完全に遅れなく実施するこ
とは、現実的に不可能であって、必ず応答遅れが生じ、
このため、板蛇行の流れは完全には止められず、簡易的
に流れを抑制するだけであって、蛇行現象を安定化する
ことは出来ない、という欠点を有しており、また蛇行に
よって流れた板は、到底、元には戻され得ないものであ
ったのである。As one attempt to solve the problems in the conventional method, Japanese Patent Laid-Open Publication No. Sho 56-11107 proposes a control method for preventing meandering of a plate using a bender pressure. Thus, this method detects the rolling load on the left and right sides of the rolling mill, and adjusts the bender so that the differential load becomes zero, thereby merely suppressing the progress of meandering. In addition, although a certain effect can be expected, it is practically impossible to completely adjust the vendor pressure without delay, and a response delay always occurs.
For this reason, the flow of the plate meandering is not completely stopped, and it only has a drawback that the flow is simply suppressed and the meandering phenomenon cannot be stabilized. The plate was irreversible at all.
【０００６】[0006]
【解決課題】ここにおいて、本発明は、かかる事情に鑑
みて為されたものであって、その解決課題とするところ
は、油圧圧下装置ではなく、電動圧下装置しか備えてい
ない圧延機であっても、ベンダ制御装置を利用して、板
の蛇行を効果的に抑制することが出来る蛇行制御方法
を、提供することにある。The present invention has been made in view of the above circumstances, and a problem to be solved is a rolling mill having only an electric screw-down device instead of a hydraulic screw-down device. Another object of the present invention is to provide a meandering control method that can effectively suppress meandering of a plate by using a vendor control device.
【０００７】[0007]
【解決手段】そして、本発明は、かかる課題を解決すべ
く、圧延機における所定板材の連続的な圧延に際して、
操作側と駆動側のベンダに対するベンダ差圧操作量及び
操作側と駆動側の圧延荷重における差荷重変化量を用
い、それらベンダ差圧操作量及び差荷重変化量から、被
圧延板材の蛇行量及びその微分量並びにベンダ差圧変化
量を推定し、その得られた蛇行量推定値、蛇行微分量推
定値及びベンダ差圧変化量推定値に応じてベンダ差圧操
作量を調整し、かかる被圧延板材の蛇行現象を解消せし
めるようにしたことを特徴とする圧延機における板の蛇
行制御方法を、その要旨とするものである。In order to solve the above problems, the present invention provides a method for continuously rolling a predetermined plate material in a rolling mill.
Using the vendor differential pressure operation amount for the operation side and the drive side vendor and the differential load change amount in the operation side and the drive side rolling load, the meandering amount and the meandering of the rolled sheet material are calculated from the vendor differential pressure operation amount and the differential load change amount. Estimating the differential amount and the vendor differential pressure change amount, adjusting the vendor differential pressure operation amount according to the obtained meandering amount estimation value, meandering differential amount estimation value and vendor differential pressure change amount estimation value, and The gist of the present invention is a method of controlling the meandering of a plate in a rolling mill, wherein the meandering phenomenon of the plate is eliminated.
【０００８】また、本発明は、圧延機における所定板材
の連続的な圧延に際して、操作側と駆動側のベンダに対
するベンダ差圧操作量及び操作側と駆動側の圧延荷重に
おける差荷重変化量を用い、それらベンダ差圧操作量及
び差荷重変化量から、被圧延板材の蛇行量及びその微分
量並びにベンダ差圧変化量を推定し、その得られた蛇行
量推定値、蛇行微分量推定値及びベンダ差圧変化量推定
値に応じてベンダ差圧操作量を調整し、かかる被圧延板
材の蛇行現象を解消せしめるようにする一方、被圧延板
材の蛇行量を実際に検出し、その蛇行検出量に応じて圧
下装置における片圧下操作量を調整して、蛇行量を零と
するようにしたことを特徴とする圧延機における板の蛇
行制御方法をも、その要旨とするものであり、特にこの
ように蛇行検出量に対する積分制御にて片圧下操作量の
調整を併せて行なわしめることにより、板の蛇行量を零
と為し得て、蛇行により流れた板を再び元の位置（セン
タ）に戻すことが容易に為され得るのである。Further, the present invention uses a vendor differential pressure operation amount with respect to an operation side and a drive side vendor and a difference load change amount between an operation side and a drive side rolling load during continuous rolling of a predetermined plate material in a rolling mill. From the vender differential pressure operation amount and the differential load change amount, the meandering amount of the rolled sheet material and its derivative amount and the vendor differential pressure change amount are estimated, and the obtained meandering amount estimation value, meandering differential amount estimation value and vendor While adjusting the vendor differential pressure operation amount in accordance with the differential pressure change amount estimation value to eliminate the meandering phenomenon of the rolled sheet material, the meandering amount of the rolled sheet material is actually detected, and the meandering detection amount is determined. The meandering control method of the plate in the rolling mill, characterized in that the one-sided reduction operation amount in the reduction device is adjusted accordingly to make the meandering amount zero, the gist of the method is also the gist. Meandering detection amount On the other hand, by controlling the one-sided reduction operation amount together with the integral control, the meandering amount of the plate can be made zero, and the plate flowing by the meandering can be easily returned to the original position (center) again. It can be done.
【０００９】[0009]
【具体的構成・作用】ところで、このような本発明に従
う蛇行制御系について、その概略構成図が、図１に示さ
れている。FIG. 1 shows a schematic configuration diagram of such a meandering control system according to the present invention.
【００１０】この図１において、圧延機における所定の
板材の連続的な圧延は、圧延現象として示され、そのよ
うな圧延に際しての圧延機における左右（操作側及び駆
動側）の圧延荷重が、従来と同様に、ロードセルの如き
適当なセンサを用いて検出され、その差荷重の変化量
（δＰ）が、蛇行制御器に導かれるようになっている。
また、蛇行制御器から出力される圧延機の操作側と駆動
側のベンダに対するベンダ差圧操作量（δｕB ）は、圧
延機に設けられるベンダ制御装置に入力せしめられ、そ
れによって圧延機におけるベンダ差圧が調整されて、所
定板材の圧延が進行せしめられるようになっている一
方、そのようなベンダ差圧操作量（δｕB ）は、蛇行制
御器にフィードバックされるようになっている。In FIG. 1, continuous rolling of a predetermined plate material in a rolling mill is shown as a rolling phenomenon, and the rolling load on the left and right (operating side and driving side) of the rolling mill during such rolling is conventionally reduced. In the same manner as described above, the change is detected using an appropriate sensor such as a load cell, and the change amount (δP) of the difference load is guided to the meandering controller.
The operation amount (δu B ) of the bender differential pressure with respect to the benders on the operation side and the drive side of the rolling mill, which is output from the meandering controller, is input to a bender control device provided in the rolling mill. While the differential pressure is adjusted to allow the rolling of the predetermined plate material to proceed, such a vendor differential pressure operation amount (δu B ) is fed back to the meandering controller.
【００１１】そして、本発明に従って、ベンダ差圧操作
量のみを調整して板の蛇行制御を行なわしめる場合にあ
っては、下記数１及び数２に示される如く、状態オブザ
ーバを構成して各状態量を推定し、それら推定値を用い
て、状態フィードバックによりベンダ差圧を調整するよ
うにするのである。According to the present invention, when the meandering control of the plate is performed by adjusting only the manipulated variable of the vendor differential pressure, a state observer is formed as shown in the following equations (1) and (2). The state variables are estimated, and the estimated values are used to adjust the vendor differential pressure by state feedback.
【００１２】[0012]
【数１】 (Equation 1)
【００１３】[0013]
【数２】 (Equation 2)
【００１４】[0014]
【表１】 [Table 1]
【００１５】要するに、本発明において、ベンダ差圧操
作のみによって蛇行現象を安定化せしめる場合にあって
は、ベンダ制御装置に入力されるベンダ差圧操作量（δ
ｕB）を取り出し、また圧延機において、ロードセル等
において検出される圧延荷重の差荷重変化量（δＰ）を
取り出し、それらベンダ差圧操作量（δｕB ）及び差荷
重変化量（δＰ）から、上記数１の式に従って、被圧延
板材の蛇行量（ｙC ）及びその微分量、更にはベンダ差
圧変化量（δＰB ）を推定し、その得られた蛇行量推定
値、蛇行微分量推定値及びベンダ差圧変化量推定値よ
り、上記数２の式に従って、ベンダ差圧操作量（δ
ｕB ）を調整し、この調整されたベンダ差圧操作量（δ
ｕB ）に基づいて、ベンダ制御装置にてベンダ差圧を調
整し、以て被圧延板材の蛇行現象を解消せしめるように
するのである。[0015] In short, in the present invention, when the meandering phenomenon is stabilized only by the vendor differential pressure operation, the vendor differential pressure operation amount (δ) input to the vendor control device.
u B ), and in the rolling mill, the differential load change amount (δP) of the rolling load detected in a load cell or the like is extracted, and from the vendor differential pressure operation amount (δu B ) and the differential load change amount (δP), The meandering amount (y C ) of the rolled sheet material and its differential amount, and further, the change in bender differential pressure (δP B ) are estimated in accordance with the above equation (1), and the obtained meandering amount estimation value and meandering differential amount estimation are obtained. From the value and the estimated value of the vendor differential pressure change amount, the vendor differential pressure operation amount (δ
u B ), and the adjusted vendor differential pressure manipulated variable (δ)
Based on u B ), the bender differential pressure is adjusted by the bender control device so as to eliminate the meandering phenomenon of the rolled sheet material.
【００１６】このようにすれば、蛇行検出が出来ない場
合でも、差荷重変化量（δＰ）からの推定値、即ち蛇行
量推定値及び蛇行微分量推定値を使用し、ベンダ差圧操
作量（δｕB ）を調整することにより、蛇行現象は有利
に安定化されるのである。In this way, even when the meandering cannot be detected, the estimated value from the difference load change amount (δP), that is, the meandering amount estimated value and the meandering differential amount estimated value is used, and the vendor differential pressure operation amount ( By adjusting δu B ), the meandering phenomenon is advantageously stabilized.
【００１７】また、本発明にあっては、上記の如きベン
ダ差圧を調整して蛇行現象を安定化させると共に、図１
に示される如く、被圧延板材の蛇行量（ｙC ）を実際に
蛇行センサにて検出し、その蛇行検出量（ｙS ）を用い
て積分制御し、圧下装置における片圧下操作量を調整し
て、蛇行量を零と為すようにする操作も採用され得るも
のであり、その際、片圧下操作量の調整は、例えば下記
の数３に示される如き式に従って、蛇行検出量（ｙS ）
に対する単純な積分制御にて、実施され得るものであ
る。なお、この積分制御は、比例積分制御やその他の制
御にても行なうことが可能である。特に、このようなベ
ンダ差圧操作において用いられるベンダ制御装置は、電
動圧下装置に比べて応答性が高く、一般に、被圧延板材
の形状を制御する手段として、広く殆どの圧延機に装備
せしめられているものであって、本発明では、そのよう
なベンダ制御装置を有利に使用することが出来るのであ
り、それ故に、本発明の適用範囲は極めて広いものとな
るのである。According to the present invention, the meandering phenomenon is stabilized by adjusting the bender differential pressure as described above.
As shown in (1), the meandering amount (y C ) of the plate material to be rolled is actually detected by a meandering sensor, and integral control is performed using the meandering detection amount (y S ) to adjust the one-sided reduction operation amount in the reduction device. An operation for making the meandering amount zero can also be adopted. In this case, the adjustment of the one-sided reduction operation amount is performed by, for example, the meandering detection amount (y s ) according to the following equation (3).
Can be implemented by a simple integral control for. It should be noted that this integral control can also be performed by proportional integral control or other control. In particular, the bender control device used in such a bender differential pressure operation has higher responsiveness than an electric screw-down device, and is generally mounted on almost all rolling mills as a means for controlling the shape of a plate to be rolled. In the present invention, such a vendor control device can be advantageously used, and therefore, the applicable range of the present invention is extremely wide.
【００１８】[0018]
【数３】 (Equation 3)
【００１９】このように、ベンダ差圧操作機能と共に、
片圧下操作機能をも備えることにより、蛇行検出量（ｙ
S ）の積分値で片圧下操作量（δｕS ）を調整する簡単
な積分制御にて、定常的に蛇行量を零とすることが出来
ることとなったのであり、また、その際用いられる圧下
装置は、高応答性である必要はなく、従来からの電動圧
下装置でも、所期の効果を得ることが出来るのである。Thus, together with the vendor differential pressure operation function,
By providing a single pressure lowering operation function, the meandering detection amount (y
The meandering amount can be steadily reduced to zero by a simple integral control that adjusts the one-sided reduction operation amount (δu S ) with the integrated value of S ). The device does not need to have high responsiveness, and the desired effect can be obtained even with a conventional electric rolling device.
【００２０】[0020]
【実施例】因みに、かかる本発明に従う圧延機における
板の蛇行制御方式の効果を確認するために、一般的によ
く知られている図２に示される如き蛇行現象を表すモデ
ルを用いて、シミュレーションを行ない、蛇行を引き起
こす要因となる外乱に対する制御効果を調べ、その結果
を、図３及び図４に示した。なお、シミュレーション条
件は、以下の通りである。DESCRIPTION OF THE PREFERRED EMBODIMENTS Incidentally, in order to confirm the effect of the meandering control system of a plate in the rolling mill according to the present invention, a simulation is carried out by using a well-known model representing the meandering phenomenon as shown in FIG. Was performed to examine the effect of controlling disturbance that causes meandering, and the results are shown in FIGS. 3 and 4. The simulation conditions are as follows.
【００２１】[0021]
【表２】 [Table 2]
【００２２】この、シミュレーション結果を示す図３で
は、圧延機のレベリング誤差＝０．０５mmが存在する場
合、また図４では、被圧延板材の中心がミル中心よりず
れて（オフセンタ＝１０mm）、圧延機に進入した場合を
想定した時の例である。そして、図３は、制御しない場
合（ａ）、ベンダ差圧操作のみの場合（ｂ）、及び片圧
下操作を併用した場合（ｃ）における結果を示してお
り、ベンダ差圧操作のみの場合（ｂ）でも、蛇行現象を
安定化、即ち蛇行の進行を完全に止めることが出来、更
に片圧下操作の併用によって（ｃ）、被圧延板材の蛇行
量を定常的にゼロに出来ることを示している。In FIG. 3 showing the simulation results, in the case where a leveling error of the rolling mill = 0.05 mm exists, and in FIG. 4, the center of the plate to be rolled is displaced from the center of the mill (off center = 10 mm). This is an example when assuming that the vehicle has entered the aircraft. FIG. 3 shows the results in the case of no control (a), in the case of only the vendor differential pressure operation (b), and in the case of using the single pressure reduction operation together (c), and in the case of only the vendor differential pressure operation ( Also in b), it is shown that the meandering phenomenon can be stabilized, that is, the progress of meandering can be completely stopped, and the meandering amount of the sheet to be rolled can be constantly reduced to zero by the combined use of the one-sided reduction operation (c). I have.
【００２３】また、図４の例においては、差荷重の変化
を零とするのみならず、逆に差荷重を大きくする方向に
もベンダ操作量を与えることによって、蛇行現象を安定
化させるようにすることにより、ベンダ差圧操作のみで
も、蛇行量を定常的にゼロに出来ることを示している。In the example shown in FIG. 4, the meandering phenomenon is stabilized not only by making the change in the differential load zero, but also by giving the amount of bender operation in the direction of increasing the differential load. This indicates that the meandering amount can be constantly reduced to zero only by the vendor differential pressure operation.
【００２４】このように、図３及び図４の何れの場合に
あっても、本発明に従う蛇行制御手法により、蛇行を効
果的に抑制し得ることが、シミュレーションにより確認
することが出来たのである。As described above, it was confirmed by simulation that the meandering control method according to the present invention can effectively suppress meandering in any of the cases shown in FIGS. 3 and 4. .
【００２５】[0025]
【発明の効果】以上の説明から明らかなように、本発明
に従う圧延機における板の蛇行制御方法によれば、ベン
ダ差圧操作のみによって、被圧延板材の蛇行現象は極め
て良好に安定化され得、しかもベンダ差圧操作のみであ
るところから、油圧圧下装置を装備していない圧延機で
あっても、ベンダ制御装置を具備しておれば良く、以て
適応し得る圧延機が極めて広い特徴を発揮するものであ
る。As is apparent from the above description, according to the meandering control method for a plate in a rolling mill according to the present invention, the meandering phenomenon of the plate material to be rolled can be extremely well stabilized only by the operation of the bender differential pressure. In addition, since only the differential pressure operation is performed by a vendor, even a rolling mill that is not equipped with a hydraulic pressure reduction device may be provided with a vendor control device. To demonstrate.
【００２６】また、ベンダ制御装置と圧下装置とを併用
して、ベンダ差圧操作と共に片圧下操作量の調整を行な
うことにより、被圧延板材の蛇行を効果的に抑制せし
め、定常的に蛇行量を零とすることが出来る等の優れた
効果を発揮するものであり、しかもそのような圧下装置
は、高応答性である必要はなく、従来の電動圧下装置で
も、所期の効果が得られる特徴がある。Further, by using the bender control device and the screw-down device together and adjusting the amount of one-sided reduction operation together with the operation of the differential pressure of the bender, the meandering of the plate material to be rolled is effectively suppressed, and the meandering amount is constantly increased. And it has an excellent effect such as making it possible to reduce the pressure to zero, and such a pressing device does not need to have high responsiveness, and the desired effect can be obtained even with a conventional electric pressing device. There are features.
【図１】本発明に従う蛇行制御系を示す概略構成図であ
る。FIG. 1 is a schematic configuration diagram showing a meandering control system according to the present invention.
【図２】シミュレーションに用いた蛇行現象を表すモデ
ルを示すブロック図である。FIG. 2 is a block diagram showing a model representing a meandering phenomenon used in the simulation.
【図３】圧延機のレベリング誤差がある場合のシミュレ
ーション結果を示すグラフである。FIG. 3 is a graph showing a simulation result when there is a leveling error of a rolling mill.
【図４】被圧延板材の中心がミル中心よりずれて圧延機
に進入した場合のシミュレーション結果を示すグラフで
ある。FIG. 4 is a graph showing a simulation result when a center of a plate material to be rolled is shifted from a center of a mill and enters a rolling mill.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松浦 達郎 東京都港区新橋５丁目11番３号 住友軽 金属工業株式会社内 (72)発明者 大嶽 篤 東京都港区新橋５丁目11番３号 住友軽 金属工業株式会社内 (72)発明者 藤本 隆行 東京都港区新橋５丁目11番３号 住友軽 金属工業株式会社内 (72)発明者 阿部 禎一 東京都港区新橋５丁目11番３号 住友軽 金属工業株式会社内 (56)参考文献 特開 昭58−39003（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tatsuro Matsuura 5-11-3 Shimbashi, Minato-ku, Tokyo Inside Sumitomo Light Metal Industries, Ltd. (72) Inventor Atsushi Otake 5-1-1-3 Shimbashi, Minato-ku, Tokyo Sumitomo Light Metal Industries, Ltd. (72) Inventor Takayuki Fujimoto 5-11-3, Shimbashi, Minato-ku, Tokyo Sumitomo Light Metal Industries, Ltd. (72) Inventor Seiichi Abe 5-113, Shimbashi, Minato-ku, Tokyo Sumitomo Light Metal Industries, Ltd. (56) References JP-A-58-39003 (JP, A)
Claims (2)
に際して、操作側と駆動側のベンダに対するベンダ差圧
操作量及び操作側と駆動側の圧延荷重における差荷重変
化量を用い、それらベンダ差圧操作量及び差荷重変化量
から、被圧延板材の蛇行量及びその微分量並びにベンダ
差圧変化量を推定し、その得られた蛇行量推定値、蛇行
微分量推定値及びベンダ差圧変化量推定値に応じてベン
ダ差圧操作量を調整し、かかる被圧延板材の蛇行現象を
解消せしめるようにしたことを特徴とする圧延機におけ
る板の蛇行制御方法。When a predetermined plate material is continuously rolled in a rolling mill, a vendor differential pressure operation amount with respect to an operation side and a drive side bender and a difference load change amount between an operation side and a drive side rolling load are used. From the pressure operation amount and the differential load change amount, the meandering amount and its differential amount of the sheet to be rolled and the bender differential pressure change amount are estimated, and the obtained meandering amount estimated value, meandering differential amount estimated value and bender differential pressure change amount are obtained. A meandering control method for a plate in a rolling mill, comprising adjusting a vendor differential pressure operation amount according to an estimated value to eliminate the meandering phenomenon of a plate material to be rolled.
に際して、操作側と駆動側のベンダに対するベンダ差圧
操作量及び操作側と駆動側の圧延荷重における差荷重変
化量を用い、それらベンダ差圧操作量及び差荷重変化量
から、被圧延板材の蛇行量及びその微分量並びにベンダ
差圧変化量を推定し、その得られた蛇行量推定値、蛇行
微分量推定値及びベンダ差圧変化量推定値に応じてベン
ダ差圧操作量を調整し、かかる被圧延板材の蛇行現象を
解消せしめるようにする一方、被圧延板材の蛇行量を実
際に検出し、その蛇行検出量に応じて圧下装置における
片圧下操作量を調整して、蛇行量を零とするようにした
ことを特徴とする圧延機における板の蛇行制御方法。2. A method for continuously rolling a predetermined sheet material in a rolling mill, wherein the amount of operation of a bender differential pressure with respect to a bender on an operating side and a driving side and a difference load change amount between rolling loads on an operating side and a driving side are used. From the pressure operation amount and the differential load change amount, the meandering amount and its differential amount of the sheet to be rolled and the bender differential pressure change amount are estimated, and the obtained meandering amount estimated value, meandering differential amount estimated value and bender differential pressure change amount are obtained. While adjusting the vendor differential pressure operation amount according to the estimated value to eliminate the meandering phenomenon of the rolled sheet material, the meandering amount of the rolled sheet material is actually detected, and the rolling-down device is adjusted according to the meandering detection amount. 3. The meandering control method for a plate in a rolling mill, wherein the one-sided lowering operation amount is adjusted to make the meandering amount zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5087884A JP2575585B2 (en) | 1993-03-23 | 1993-03-23 | Meander control method of plate in rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5087884A JP2575585B2 (en) | 1993-03-23 | 1993-03-23 | Meander control method of plate in rolling mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06269825A JPH06269825A (en) | 1994-09-27 |
| JP2575585B2 true JP2575585B2 (en) | 1997-01-29 |
Family
ID=13927303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5087884A Expired - Fee Related JP2575585B2 (en) | 1993-03-23 | 1993-03-23 | Meander control method of plate in rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2575585B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6813059B2 (en) * | 2018-07-06 | 2021-01-13 | Ｊｆｅスチール株式会社 | Rolled material meandering control method, rolled material meandering control device, and rolled material manufacturing method |
| JP7230628B2 (en) * | 2019-03-25 | 2023-03-01 | 日本製鉄株式会社 | Rolling equipment and control method |
-
1993
- 1993-03-23 JP JP5087884A patent/JP2575585B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06269825A (en) | 1994-09-27 |
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