JP3142187B2 - Rolling control method for sheet rolling mill - Google Patents

Rolling control method for sheet rolling mill

Info

Publication number
JP3142187B2
JP3142187B2 JP05049162A JP4916293A JP3142187B2 JP 3142187 B2 JP3142187 B2 JP 3142187B2 JP 05049162 A JP05049162 A JP 05049162A JP 4916293 A JP4916293 A JP 4916293A JP 3142187 B2 JP3142187 B2 JP 3142187B2
Authority
JP
Japan
Prior art keywords
rolling mill
rolling
thickness distribution
load
width direction
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
Application number
JP05049162A
Other languages
Japanese (ja)
Other versions
JPH06262227A (en
Inventor
茂 小川
利幸 白石
哲彦 神田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP05049162A priority Critical patent/JP3142187B2/en
Publication of JPH06262227A publication Critical patent/JPH06262227A/en
Application granted granted Critical
Publication of JP3142187B2 publication Critical patent/JP3142187B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、圧延により板状素材あ
るいは帯状素材の肉厚を圧減せしめ、所定の肉厚で良好
な形状の板状製品あるいは帯状製品を得る板圧延機の圧
延制御方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling control for a plate rolling mill for reducing the thickness of a sheet material or a strip material by rolling to obtain a sheet material or a strip product having a predetermined thickness and a good shape. About the method.

【0002】[0002]

【従来の技術】公知の圧延技術では、圧延材の板クラウ
ン・形状制御は、圧延機の出側に幅方向板厚分布測定装
置や板形状検出装置を配置し、圧延機を出た後の圧延材
の板厚や板形状を検知し、この検知した信号に基づき、
ワークロールベンダー、中間ロールベンダー、中間ロー
ルシフト、ロールクロス機構等を作動させて、上下作業
ロール間のロールギャップ形状を調節することによって
行う。
2. Description of the Related Art In a known rolling technique, a strip crown and a shape of a rolled material are controlled by arranging a width direction thickness distribution measuring device and a strip shape detecting device on an exit side of a rolling mill. The thickness and shape of the rolled material are detected, and based on the detected signals,
The work is performed by adjusting the shape of the roll gap between the upper and lower work rolls by operating a work roll bender, an intermediate roll bender, an intermediate roll shift, a roll cross mechanism, and the like.

【0003】しかしこの圧延機の板クラウン・形状の制
御方法では、圧延材に板クラウン・形状の異常が発生し
た場合、板クラウン・形状に異常のある部分が圧延され
て、圧延機を出て、板厚分布測定装置や板形状測定装置
に到達した後で上下作業ロール間のロールギャップ形状
の調整が開始される。このため作業ロールギャップ形状
の調整が完了する迄の時間が長く、この時間のずれの間
に圧延機を通過した圧延材は板クラウン形状が矯正され
ていないという問題点がある。
However, according to the method for controlling the crown and shape of a rolling mill, when an abnormality occurs in the crown and shape of a rolled material, a portion having an abnormal crown and shape is rolled, and the roll exits the rolling mill. After reaching the plate thickness distribution measuring device or the plate shape measuring device, the adjustment of the roll gap shape between the upper and lower work rolls is started. For this reason, there is a problem that it takes a long time until the adjustment of the shape of the work roll gap is completed, and the rolled material that has passed through the rolling mill during this time lag has not corrected the sheet crown shape.

【0004】また従来の圧延機では、圧延材〜作業ロー
ル間の圧延荷重の板幅方向の分布は直接には検知できな
いものであり、従って圧延荷重の板幅方向の分布は高い
精度では調整できないものであり、このため圧延材の板
クラウン・形状を高い精度で制御する事は難しいという
問題点があった。
Further, in the conventional rolling mill, the distribution of the rolling load between the rolled material and the work roll in the width direction cannot be directly detected, and therefore the distribution of the rolling load in the width direction cannot be adjusted with high accuracy. Therefore, it is difficult to control the crown and shape of the rolled material with high accuracy.

【0005】[0005]

【発明が解決しようとする課題】本発明は、圧延材〜作
業ロール間の圧延荷重の板幅方向の分布を検知すること
が可能であり、この圧延荷重の板幅方向の分布を調整す
る事によって作業ロールたわみを自在に制御する、板圧
延機の圧延制御方法の提供を課題としている。
SUMMARY OF THE INVENTION According to the present invention, it is possible to detect the distribution of the rolling load between the rolled material and the work roll in the width direction of the sheet, and to adjust the distribution of the rolling load in the width direction of the sheet. An object of the present invention is to provide a method for controlling rolling of a sheet rolling mill, which freely controls the deflection of a work roll.

【0006】本発明によると、圧延材に板クラウン・形
状の異常が発生すると、この異常は圧延荷重の板幅方向
の分布の異常として圧延材のロール通過と同時に検知で
き、時間遅れのない板クラウン・形状の制御が可能とな
る。また本発明によると、圧延荷重の板幅方向の分布を
検出しつつ作業ロールギャップ形状を制御するために、
板クラウン・形状を高い精度で制御する事が可能とな
る。
According to the present invention, when an abnormality occurs in the crown or shape of a rolled material, the abnormality can be detected simultaneously with the passage of the rolled material through the roll as an abnormality in the distribution of the rolling load in the width direction of the plate, and the plate has no time delay. The crown and shape can be controlled. According to the present invention, in order to control the work roll gap shape while detecting the distribution of the rolling load in the plate width direction,
Plate crown and shape can be controlled with high accuracy.

【0007】[0007]

【課題を解決するための手段】図1は本発明で使用する
板圧延機の例の説明図で、(A)は正面説明図、(B)は上
ロールアセンブリの分割補強ロールの配置の例を示す平
面図である。図1に基づき本発明の板圧延機を説明す
る。本発明では、上下少なくともどちらか一方のロール
アセンブリ(図1は上下双方のロールアセンブリの例で
ある)は、軸方向3分割以上(図1は7分割の例である)
に分割した、分割補強ロール2A,2B,2C,3A,
3B,3C,3Dによって作業ロール1を支持する機構
とし、各分割補強ロール(例えば2C)には独立な荷重検
出装置(5C)が配備されている圧延機を用いる。同様に
図中6Dは分割補強ロール3Dに設けた荷重検出装置で
ある。
FIG. 1 is an explanatory view of an example of a plate rolling mill used in the present invention. FIG. 1 (A) is an explanatory front view, and FIG. 1 (B) is an example of an arrangement of divided reinforcing rolls of an upper roll assembly. FIG. The sheet rolling mill of the present invention will be described with reference to FIG. In the present invention, at least one of the upper and lower roll assemblies (FIG. 1 is an example of both upper and lower roll assemblies) is divided into three or more in the axial direction (FIG. 1 is an example of seven divisions).
Divided reinforcing rolls 2A, 2B, 2C, 3A,
A mechanism for supporting the work roll 1 by 3B, 3C, and 3D is used, and a rolling mill provided with an independent load detection device (5C) is used for each divided reinforcing roll (for example, 2C). Similarly, 6D in the figure is a load detecting device provided on the divided reinforcing roll 3D.

【0008】図中8C,9Dは各分割補強ロールに独立
に配した分割補強ロール圧下装置の例である。分割補強
ロール圧下装置は、油圧方式、スクリュー方式あるいは
ベアリングの偏心スリーブ方式の何れであってもよい。
また11は分割補強ロールと荷重検出装置と分割補強ロ
ール圧下装置とよりなる各ユニットU2A,…,U3D
を配したインナーハウジングの例で、インナーハウジン
グ11はミルハウジング12に取りつけられ、ミル圧下
装置13により昇降可能に配されている。
[0008] In the drawing, reference numerals 8C and 9D are examples of split reinforcing roll pressing devices independently disposed for each split reinforcing roll. The split reinforcing roll rolling-down device may be any of a hydraulic system, a screw system, and an eccentric sleeve system of a bearing.
Reference numeral 11 denotes each unit U2A,..., U3D comprising a split reinforcing roll, a load detecting device, and a split reinforcing roll pressing device.
In the example of the inner housing, the inner housing 11 is attached to the mill housing 12 and is arranged so as to be able to move up and down by a mill pressure reducing device 13.

【0009】本発明の圧延機はまた、分割補強ロールの
圧下パターン制御機構や作業ロールベンダー等をアクチ
ュエータとする幅方向板厚分布・形状制御装置(図示し
ない)を有する。幅方向板厚分布・形状制御装置には、各
荷重検出装置5A,5B,5C,6A,6B,6C,6
Dが検出した荷重が入力される。また各分割補強ロール
圧下装置8A,8B,8C,9A,9B,9C,9D
は、幅方向板厚分布・形状制御装置からの指令に基づい
てそれぞれ独立に作動する。
The rolling mill of the present invention also has a width direction thickness distribution / shape control device (not shown) using a press-down pattern control mechanism for the divided reinforcing rolls and a work roll bender as an actuator. Each of the load detecting devices 5A, 5B, 5C, 6A, 6B, 6C, 6
The load detected by D is input. Further, each of the divided reinforcing roll pressing devices 8A, 8B, 8C, 9A, 9B, 9C, 9D.
Operate independently based on commands from the width direction thickness distribution / shape control device.

【0010】図中7は圧延機後面の板形状検出装置で1
0は圧延機後面の幅方向板厚分布測定装置であり、圧延
機には7,10の何れかあるいは双方が配備されてい
る。7,10のそれぞれは前記の幅方向板厚分布・形状
制御装置(図示しない)に連結されている。
[0010] In the figure, reference numeral 7 denotes a plate shape detecting device on the rear surface of the rolling mill.
Reference numeral 0 denotes a device for measuring the thickness distribution in the width direction of the rear surface of the rolling mill, and one or both of the rolling members 7 and 10 are provided in the rolling mill. Each of 7 and 10 is connected to the width direction thickness distribution / shape control device (not shown).

【0011】本発明の第1の圧延制御方法では、板形状
検出装置7が配備された図1で例示した圧延機を用い
る。この圧延制御方法では、圧延機後面の板形状検出装
置による板形状測定値と所望の板形状との差異を演算
し、この差異を解消するための圧延材〜作業ロール間に
作用する圧延荷重の幅方向分布の所要変化量を演算し、
さらにこの圧延荷重分布の所要変化量を実現するための
当該圧延機の各分割補強ロールの荷重の所要変化量を演
算し、この分割補強ロール荷重の所要変化量を目標とし
て当該圧延機の幅方向板厚分布・形状制御装置を操作す
る。
In the first rolling control method of the present invention, the rolling mill illustrated in FIG. 1 provided with the plate shape detecting device 7 is used. In this rolling control method, the difference between the plate shape measurement value and the desired plate shape by the plate shape detecting device on the rear surface of the rolling mill is calculated, and the rolling load applied between the rolled material and the work roll to eliminate the difference is calculated. Calculate the required change in the width direction distribution,
Further, the required change amount of the load of each divided reinforcing roll of the rolling mill to realize the required amount of change of the rolling load distribution is calculated, and the required amount of change of the divided reinforcing roll load is set as a target in the width direction of the rolling mill. Operate the thickness distribution and shape control device.

【0012】図2はこの方法のフローチャートである。
図2でステップ4の制御結果はステップ1にフィードバ
ックされ、学習サイクルを形成する。尚圧延中の圧延材
に板クラウン・形状の異常が発生した場合は、分割補強
ロールの荷重の異常として異常部分がロールを通過する
と同時にステップ4で検知され、時間遅れのない制御が
行われる。この方法により圧延材の板形状を制御する。
FIG. 2 is a flowchart of this method.
In FIG. 2, the control result of step 4 is fed back to step 1 to form a learning cycle. If an abnormality occurs in the crown or shape of the rolled material during rolling, the abnormal portion is detected as an abnormality in the load of the divided reinforcing rolls in step 4 at the same time as the abnormal portion passes through the rolls, and control without time delay is performed. This method controls the shape of the rolled material.

【0013】本発明の第2の圧延制御方法では、幅方向
板厚分布測定装置10が配備された図1で例示した圧延
機を用いる。この制御方法では圧延機後面の該幅方向板
厚分布測定装置による板厚分布測定値と所望の板厚分布
との差異を演算し、この差異を解消するための圧延材〜
作業ロール間に作用する圧延荷重の幅方向分布の所要変
化量を演算し、さらにこの圧延荷重分布の所要変化量を
実現するため当該圧延機の各分割補強ロールの荷重の所
要変化量を演算し、この分割補強ロール荷重の所要変化
量を目標として当該圧延機の幅方向板厚分布・形状制御
装置を操作する。
In the second rolling control method of the present invention, the rolling mill illustrated in FIG. 1 provided with the width direction thickness distribution measuring device 10 is used. In this control method, the difference between the measured value of the thickness distribution measured by the width direction thickness distribution measuring device on the rear surface of the rolling mill and the desired thickness distribution is calculated, and the rolled material to eliminate the difference
Calculate the required change in the width direction distribution of the rolling load acting between the work rolls, and further calculate the required change in the load of each divided reinforcing roll of the rolling mill in order to realize the required change in the rolling load distribution. Then, the width direction thickness distribution / shape control device of the rolling mill is operated with the required change amount of the divided reinforcing roll load as a target.

【0014】図3はこの方法のフローチャートである。
図3においても図2で述べたと同様に学習サイクルが形
成され、また圧延中の圧延材に板クラウン・形状の異常
が発生した場合には時間遅れのない制御が行われる。こ
の方法により圧延材のプロフィルを制御する。
FIG. 3 is a flowchart of this method.
In FIG. 3 as well, a learning cycle is formed in the same manner as described with reference to FIG. 2, and when a rolled material being rolled has an abnormal crown or shape, control without time delay is performed. This method controls the profile of the rolled material.

【0015】本発明の第3の圧延制御方法では、2スタ
ンド以上の複数の圧延機を有する圧延機列を用いる。図
1の圧延機は板形状検出装置7と幅方向板厚分布測定装
置10とを配備した圧延機で圧延機列の最も下流に配す
る。上流側に配する他の圧延機は図1の圧延機であって
もよいし、従来の形式の圧延機であってもよいが、上流
側圧延機の少なくとも1スタンドには幅方向板厚分布・
形状制御装置が配されている。
In the third rolling control method of the present invention, a rolling mill row having a plurality of rolling mills of two stands or more is used. The rolling mill shown in FIG. 1 is a rolling mill provided with a plate shape detecting device 7 and a width direction thickness distribution measuring device 10, and is arranged at the most downstream side of the rolling mill row. The other rolling mill arranged on the upstream side may be the rolling mill of FIG. 1 or a conventional type of rolling mill, but at least one stand of the upstream rolling mill has a thickness distribution in the width direction.・
A shape control device is provided.

【0016】この制御方法では圧延機後面の形状検出装
置による板形状測定値と所望の板形状との差異、および
圧延機後面の該幅方向板厚分布測定装置による板厚分布
測定値と所望の板厚分布との差異を演算し、これらの差
異を同時に解消するための、最下流圧延機入側板厚分布
の変更量と最下流圧延機における圧延材〜作業ロール間
に作用する圧延荷重の幅方向分布の所要変化量を演算
し、さらに上記最下流圧延機入側板厚分布変更量を実現
するための上流側圧延機の幅方向板厚分布・形状制御装
置の操作目標量を算出し、最下流圧延機の上記圧延材〜
作業ロール間圧延荷重分布所要変化量を実現するための
当該圧延機の各分割補強ロールの荷重の所要変化量を演
算し、まず、上流側圧延機の幅方向板厚分布を上記目標
量にしたがって制御し、圧延材の移送時間を考慮した上
で、最下流圧延機の分割補強ロール荷重の所要変化量を
目標として当該圧延機の幅方向板厚分布・形状制御装置
を操作する。
In this control method, the difference between the sheet shape measured by the shape detector on the rear surface of the rolling mill and the desired sheet shape, and the sheet thickness distribution measured by the width direction thickness distribution measuring device on the rear surface of the rolling mill is compared with the desired sheet shape. Calculate the difference from the sheet thickness distribution, and to eliminate these differences at the same time, the amount of change in the sheet thickness distribution on the entry side of the most downstream rolling mill and the width of the rolling load acting between the rolled material and the work roll in the most downstream rolling mill Calculate the required amount of change in the direction distribution, and further calculate the operation target amount of the width direction thickness distribution and shape control device of the upstream rolling mill to realize the above-mentioned most downstream rolling mill entry side thickness distribution change amount. Rolled material of downstream rolling mill ~
Calculate the required change amount of the load of each divided reinforcing roll of the rolling mill in order to achieve the required change amount of the rolling load distribution between the work rolls, first, the width direction thickness distribution of the upstream rolling mill according to the target amount. After controlling the rolling material transfer time, the width direction thickness distribution and shape control device of the rolling mill is operated with a target of the required change amount of the divided reinforcing roll load of the most downstream rolling mill.

【0017】図4はこの方法のフローチャートである。
図4においても図2で述べたと同様に学習サイクルが形
成され、また圧延中の圧延材に板クラウンが発生した場
合にも時間遅れのない制御が行われる。この方法によっ
て圧延材の形状と板プロフィルを同時に制御する。
FIG. 4 is a flowchart of this method.
In FIG. 4 as well, a learning cycle is formed in the same manner as described with reference to FIG. 2, and control is performed without time delay even when a strip crown is generated in the rolled material during rolling. By this method, the shape of the rolled material and the sheet profile are simultaneously controlled.

【0018】[0018]

【作用】[Action]

【0019】本発明の作用をThe operation of the present invention

【表1】〜[Table 1] ~

【表5】で説明します。This is explained in [Table 5].

【0020】[0020]

【表1】 [Table 1]

【0021】[0021]

【表2】 [Table 2]

【0022】[0022]

【表3】 [Table 3]

【0023】[0023]

【表4】 [Table 4]

【0024】[0024]

【表5】 [Table 5]

【0025】[0025]

【発明の効果】本発明の板圧延機の圧延制御方法を用い
ることによって、圧延中の板クラウン・形状を時間遅れ
なく高精度に制御することが可能となり、圧延板の板ク
ラウン・形状制御精度が飛躍的に向上するとともに、従
来、熟練オペレータに頼っていたこれら圧延機運転作業
の自動化を大きく進展させることができる。
By using the rolling control method of the present invention, it is possible to control the crown and shape during rolling with high precision without delay, and to control the crown and shape of a rolled plate with high accuracy. And the automation of the operation of these rolling mills, which has conventionally relied on skilled operators, can be greatly advanced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】は本発明で使用する板圧延機の例の説明図。FIG. 1 is an explanatory view of an example of a sheet rolling mill used in the present invention.

【図2】は本発明の第1の圧延制御方法のフローチャー
ト。
FIG. 2 is a flowchart of a first rolling control method according to the present invention.

【図3】は本発明の第2の圧延制御方法のフローチャー
ト。
FIG. 3 is a flowchart of a second rolling control method according to the present invention.

【図4】は本発明の第3の圧延制御方法のフローチャー
ト。
FIG. 4 is a flowchart of a third rolling control method according to the present invention.

【図5】は作業ロールに作用する荷重の模式図。FIG. 5 is a schematic diagram of a load acting on a work roll.

【符号の説明】[Explanation of symbols]

1:作業ロール、 2(2A〜2C):分割補給ロール、
3(3A〜3D):分割補強ロール、 4:圧延材、
5(5A〜5C):荷重検出装置、 6(6A〜6D):荷
重検出装置、 7:板形状検出装置、 8(8A〜8
C):圧下装置、9(9A〜9D):圧下装置、 10:
幅方向板厚分布測定装置、 11:インナーハウジン
グ、 12:ミルハウジング、 13:ミル圧下装置、
14:ベアリング。
1: work roll, 2 (2A to 2C): split supply roll,
3 (3A to 3D): divided reinforcing rolls, 4: rolled material,
5 (5A to 5C): load detector, 6 (6A to 6D): load detector, 7: plate shape detector, 8 (8A to 8)
C): Reduction device, 9 (9A to 9D): Reduction device, 10:
Width direction thickness distribution measuring device, 11: inner housing, 12: mill housing, 13: mill rolling down device,
14: Bearing.

フロントページの続き (51)Int.Cl.7 識別記号 FI B21C 51/00 B21B 37/00 BBH (56)参考文献 特開 昭58−61908(JP,A) 特開 昭61−17311(JP,A) 特開 昭63−132710(JP,A) 特開 平5−69010(JP,A) (58)調査した分野(Int.Cl.7,DB名) B21B 1/00 - 11/00 B21B 13/14,29/00 B21B 37/00 - 37/78 B21C 51/00 Continuation of the front page (51) Int.Cl. 7 Identification symbol FI B21C 51/00 B21B 37/00 BBH (56) References JP-A-58-61908 (JP, A) JP-A-61-17311 (JP, A JP-A-63-132710 (JP, A) JP-A-5-69010 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B21B 1/00-11/00 B21B 13 / 14,29 / 00 B21B 37/00-37/78 B21C 51/00

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】上下少なくともどちらか一方のロールアセ
ンブリは、軸方向3分割以上に分割した分割補強ロール
によって作業ロールを支持する機構とし、各々の分割補
強ロールにはそれぞれ独立に荷重検出装置を配備し、さ
らに圧延材の幅方向板厚分布・形状制御装置および圧延
機後面に板形状検出装置を有する板圧延機の圧延制御方
法において、圧延機後面の板形状検出装置による板形状
測定値と所望の板形状との差異を演算し、この差異を解
消するための圧延材〜作業ロール間に作用する圧延荷重
の幅方向分布の所要変化量を演算し、さらにこの圧延荷
重分布の所要変化量を実現するための当該圧延機の各分
割補強ロールの荷重の所要変化量を演算し、この分割補
強ロール荷重の所要変化量を目標として当該圧延機の幅
方向板厚分布・形状制御装置を操作することを特徴とす
る板圧延機の圧延制御方法。
At least one of the upper and lower roll assemblies has a mechanism for supporting a work roll by divided reinforcing rolls divided into three or more in the axial direction, and a load detecting device is independently provided for each divided reinforcing roll. Further, in a rolling control method for a plate rolling mill having a width direction thickness distribution and shape control device for a rolled material and a plate shape detecting device on the rear surface of the rolling mill, the sheet shape measured value by the Calculate the required change in the width direction distribution of the rolling load acting between the rolled material and the work roll to eliminate this difference, and further calculate the required change in the rolling load distribution. Calculate the required change amount of the load of each divided reinforcing roll of the rolling mill to realize the thickness distribution and shape of the rolling mill in the width direction with the required amount of change of the divided reinforcing roll load as a target. Rolling control method for a plate rolling mill, characterized by operating the control device.
【請求項2】上下少なくともどちらか一方のロールアセ
ンブリは、軸方向3分割以上に分割した分割補強ロール
によって作業ロールを支持する機構とし、各々の分割補
強ロールにはそれぞれ独立に荷重検出装置を配備し、さ
らに圧延材の幅方向板厚分布・形状制御装置および圧延
機後面に幅方向板厚分布測定装置を有する板圧延機の圧
延制御方法において、圧延機後面の該幅方向板厚分布測
定装置による板厚分布測定値と所望の板厚分布との差異
を演算し、この差異を解消するための圧延材〜作業ロー
ル間に作用する圧延荷重の幅方向分布の所要変化量を演
算し、さらにこの圧延荷重分布の所要変化量を実現する
ための当該圧延機の各分割補強ロールの荷重の所要変化
量を演算し、この分割補強ロール荷重の所要変化量を目
標として当該圧延機の幅方向板厚分布・形状制御装置を
操作することを特徴とする板圧延機の圧延制御方法。
2. The at least one of the upper and lower roll assemblies has a mechanism for supporting a work roll by divided reinforcing rolls divided into three or more in the axial direction, and a load detecting device is independently provided for each divided reinforcing roll. Further, in a rolling control method of a plate rolling mill having a width direction thickness distribution and shape control device for a rolled material and a width direction thickness distribution measuring device on the rear surface of the rolling mill, the width direction thickness distribution measuring device on the rear surface of the rolling mill Calculate the difference between the measured value of the thickness distribution and the desired thickness distribution, calculate the required change in the width distribution of the rolling load acting between the rolled material and the work roll to eliminate this difference, and The required change amount of the load of each divided reinforcing roll of the rolling mill for realizing the required amount of change of the rolling load distribution is calculated, and the required amount of change of the divided reinforcing roll load is set as a target. Rolling control method for a plate rolling mill, which comprises operating the widthwise thickness distribution and shape control.
【請求項3】2スタンド以上の複数の圧延機を有し、さ
らに最も下流の圧延機の上下少なくともどちらか一方の
ロールアセンブリは、軸方向3分割以上に分割した分割
補強ロールによって作業ロールを支持する機構とし、各
々の分割補強ロールにはそれぞれ独立に荷重検出装置を
配備し、さらに圧延材の幅方向板厚分布・形状制御装置
および圧延機後面に板形状検出装置および幅方向板厚分
布測定装置を有し、その他の上流側圧延機の少なくとも
1スタンドには幅方向板厚分布・形状制御装置を有する
板圧延機の圧延制御方法において、圧延機後面の形状検
出装置による板形状測定値と所望の板形状との差異、お
よび圧延機後面の該幅方向板厚分布測定装置による板厚
分布測定値と所望の板厚分布との差異を演算し、これら
の差異を同時に解消するための、最下流圧延機入側板厚
分布の変更量と最下流圧延機における圧延材〜作業ロー
ル間に作用する圧延荷重の幅方向分布の所要変化量を演
算し、さらに上記最下流圧延機入側板厚分布変更量を実
現するための上流側圧延機の幅方向板厚分布・形状制御
装置の操作目標量を算出し、最下流圧延機の上記圧延材
〜作業ロール間圧延荷重分布所要変化量を実現するため
の当該圧延機の各分割補強ロールの荷重の所要変化量を
演算し、まず、上流側圧延機の幅方向板厚分布を上記目
標量にしたがって制御し、圧延材の移送時間を考慮した
上で、最下流圧延機の分割補強ロール荷重の所要変化量
を目標として当該圧延機の幅方向板厚分布・形状制御装
置を操作することを特徴とする板圧延機の圧延制御方
法。
3. A plurality of rolling mills having two or more stands, and at least one of the upper and lower roll assemblies of the most downstream rolling mill supports a work roll by divided reinforcing rolls divided into three or more divided in the axial direction. Each split reinforcement roll is equipped with a load detection device independently, and a width direction thickness distribution and shape control device for the rolled material and a plate shape detection device and width direction thickness distribution measurement on the rear side of the rolling mill In a rolling control method of a plate rolling mill having a width direction thickness distribution / shape control device in at least one stand of the other upstream rolling mill, a plate shape measurement value by a shape detecting device on a rear surface of the rolling mill is provided. The difference between the desired sheet shape and the difference between the sheet thickness distribution measured by the width direction sheet thickness distribution measuring device on the rear surface of the rolling mill and the desired sheet thickness distribution are calculated, and these differences are simultaneously solved. To calculate the required amount of change in the width distribution of the rolling load acting between the rolled material and the work roll in the most downstream rolling mill and the amount of change in the thickness distribution on the entry side of the most downstream rolling mill, Calculate the operation target amount of the width direction thickness distribution / shape control device of the upstream rolling mill to realize the change amount of the entrance side thickness distribution, and calculate the required rolling load distribution between the above-mentioned rolled material and work roll of the most downstream rolling mill. The required change amount of the load of each divided reinforcing roll of the rolling mill for realizing the amount is calculated, first, the width direction thickness distribution of the upstream rolling mill is controlled according to the target amount, and the transport time of the rolled material is controlled. In consideration of the above, a rolling control method of a plate rolling mill characterized by operating a width direction thickness distribution and shape control device of the rolling mill with a target of a required change amount of a divided reinforcing roll load of a most downstream rolling mill. .
JP05049162A 1993-03-10 1993-03-10 Rolling control method for sheet rolling mill Expired - Lifetime JP3142187B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05049162A JP3142187B2 (en) 1993-03-10 1993-03-10 Rolling control method for sheet rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05049162A JP3142187B2 (en) 1993-03-10 1993-03-10 Rolling control method for sheet rolling mill

Publications (2)

Publication Number Publication Date
JPH06262227A JPH06262227A (en) 1994-09-20
JP3142187B2 true JP3142187B2 (en) 2001-03-07

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JP (1) JP3142187B2 (en)

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KR101523024B1 (en) * 2013-12-23 2015-05-27 주식회사 포스코 Rolling module and control method thereof

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