JPH0890030A - Method for controlling width of rolling stock - Google Patents

Method for controlling width of rolling stock

Info

Publication number
JPH0890030A
JPH0890030A JP6229153A JP22915394A JPH0890030A JP H0890030 A JPH0890030 A JP H0890030A JP 6229153 A JP6229153 A JP 6229153A JP 22915394 A JP22915394 A JP 22915394A JP H0890030 A JPH0890030 A JP H0890030A
Authority
JP
Japan
Prior art keywords
width
vertical
rolling mill
vertical roll
value
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.)
Pending
Application number
JP6229153A
Other languages
Japanese (ja)
Inventor
Hideaki Senda
未顕 千田
Hideyuki Yuzawa
秀行 湯澤
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP6229153A priority Critical patent/JPH0890030A/en
Publication of JPH0890030A publication Critical patent/JPH0890030A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enhance precision for controlling a plate width by comparing a width measurement with the opening degree of a vertical roll at the time of edging, calculating the zero point error of such opening degree and thereby correcting the setting value of the opening degree for the next rolling pass. CONSTITUTION: An edging control is performed on a rolling stock S by a vertical rolling mill 2, and a horizontal rolling is performed by a roughing mill 1. The width of a section of the rolling stock S is measured by a width meter 7 on the upstream side, and the average value W is determined by an arithmetic and control unit 8 for the opening degree of a vertical roll. While tracking is performed on the same section of the rolling stock S, edging is performed with a specific low load; the opening degree of the vertical roll 2a, 2a is measured by a position sensor 9; and the average value E is computed by the arithmetic and control unit 8. A zero point error δ=W-E is computed. Rolling is performed by the use of that opening degree of the vertical roll which is corrected with the zero point error δ. The precision of the plate width is enhanced since the zero point error of the vertical roll 2a is calculated on line and reflected in the subsequent setting of the opening degree of the vertical roll 2a.

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、圧延材の板幅制御方法
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strip width control method for rolled material.

【0002】[0002]

【従来の技術】従来、ホットストリップはたとえば3基
の粗圧延機と7〜8スタンドの仕上圧延機で連続的に圧
延されるのであるが、その板幅精度の向上の方策とし
て、粗圧延機において水平型圧延機に竪型圧延機を組み
合わせて、竪型圧延機の幅圧下パススケジュールを適正
にするとか、あるいはコンピュータによる竪ロール開度
のセットアップを採用すること、さらには強力な竪型圧
延機を用いて通板中に竪ロール開度を制御することなど
の制御技術が採用されている(第3版鉄鋼便覧III(1)、
日本鉄鋼協会編、昭和55年発行、P.392 参照) 。
2. Description of the Related Art Conventionally, hot strips are continuously rolled by, for example, three rough rolling mills and a finishing rolling mill having 7 to 8 stands. As a measure for improving the strip width accuracy, a rough rolling mill is used. At the same time, by combining a vertical rolling mill with a horizontal rolling mill to optimize the width reduction pass schedule of the vertical rolling mill, or by adopting a vertical roll opening setup by a computer, it is also possible to use a strong vertical rolling mill. The control technology such as controlling the vertical roll opening during the threading using a machine is adopted (3rd Edition Steel Handbook III (1),
Edited by Japan Iron and Steel Institute, published in 1980, P.392).

【0003】すなわち、図2(a) ,(b) は粗圧延機の一
例を部分的に示したものであるが、たとえば4重式水平
ロール1a,1a,1b,1bを備えた粗圧延機1の上
流側に左右一対の竪ロール2a,2aを備えた竪型圧延
機2が接近して設置され、圧延材Sの板幅方向の圧延と
板厚方向の圧延がほぼ同時に行われる。なお、3は板幅
計である。
That is, FIGS. 2 (a) and 2 (b) partially show an example of a rough rolling mill. For example, a rough rolling mill equipped with quadruple horizontal rolls 1a, 1a, 1b, 1b. A vertical rolling mill 2 provided with a pair of vertical rolls 2a, 2a on the upstream side of 1 is installed close to each other, and rolling of the rolled material S in the plate width direction and rolling in the plate thickness direction is performed substantially at the same time. In addition, 3 is a board width meter.

【0004】ところで、上記した竪型圧延機2の竪ロー
ル開度は、たとえば1,2箇月に1回の割合でなされる
ロール交換時に、幅寸法が既知のダミースラブを通すこ
とによって零点調整がなされ、その値がそのまま制御に
用いられている。したがって、零点調整時の誤差や圧延
におけるロール表面の摩耗などにより、実際の竪ロール
開度と設定開度に差が生じ、そのため板幅精度も経時変
化するのが現状である。
By the way, the vertical roll opening of the vertical rolling mill 2 can be adjusted at zero point by passing a dummy slab of which width is known at the time of roll replacement, for example, once every one or two months. The value is used for control as it is. Therefore, there is a difference between the actual vertical roll opening and the set opening due to an error at the time of adjusting the zero point, wear of the roll surface during rolling, etc. Therefore, the strip width accuracy also changes with time.

【0005】[0005]

【発明が解決しようとする課題】上記したような竪型圧
延機2の竪ロール開度の零点調整では点検の頻度が少な
いため、ときには、零点の調整誤差によって竪ロール交
換前後で板幅精度が変化したり、ロール摩耗などによる
板幅精度の平均誤差が経時変化するという問題があっ
た。
Since the zero point adjustment of the vertical roll opening of the vertical type rolling mill 2 as described above requires less frequency of inspection, sometimes the plate width accuracy before and after the vertical roll replacement is caused by the zero point adjustment error. There has been a problem that the average error of the plate width accuracy due to change or roll wear changes with time.

【0006】また、板幅計3は粗圧延機1の下流側に設
置されているのが通常であるから、粗圧延機1が可逆式
圧延機の場合は逆パス出側(次正パス入側)での圧延材
Sの板幅を測定することができず、逆パス時と次正パス
時を含めて正パス時の竪ロール開度の設定値を計算する
ことになるため、板幅制御精度を高めるのは困難であっ
た。
Further, since the strip width gauge 3 is usually installed on the downstream side of the rough rolling mill 1, when the rough rolling mill 1 is a reversible rolling mill, the reverse pass exit side (next positive pass It is not possible to measure the strip width of the rolled material S on the side), and the set value of the vertical roll opening during the forward pass including the reverse pass and the next forward pass will be calculated. It was difficult to improve the control accuracy.

【0007】本発明は、上記のような従来技術の有する
課題を解決した圧延材の板幅制御方法を提供することを
目的とする。
An object of the present invention is to provide a strip width control method for a rolled material, which solves the problems of the prior art as described above.

【0008】[0008]

【課題を解決するための手段】本発明は、水平ロールを
備えた粗圧延機の上流側に設けられた定圧下制御機能を
有する竪ロールを備えた竪型圧延機を用いて圧延材の板
幅を制御する方法において、前記竪型圧延機の上流側に
設けられた板幅計によって圧延材の板幅を測定する第1
の工程、前記竪型圧延機によって一定の低荷重で幅圧下
制御を行う第2の工程、前記板幅計によって測定された
板幅測定値と前記幅圧下時の竪ロール開度とを比較し
て、竪ロール開度の零点誤差を演算する第3の工程、該
零点誤差の値を用いて次圧延パス時の竪ロール開度の設
定値を補正する第4の工程、からなることを特徴とする
圧延材の板幅制御方法である。
DISCLOSURE OF THE INVENTION The present invention uses a vertical rolling mill provided with a vertical roll having a constant reduction control function provided on the upstream side of a rough rolling mill provided with a horizontal roll, and a plate of rolled material. In a method of controlling a width, a first method of measuring a plate width of a rolled material by a plate width gauge provided on an upstream side of the vertical rolling mill
Step, a second step of performing width reduction control with a constant low load by the vertical rolling mill, comparing the strip width measurement value measured by the strip width meter with the vertical roll opening during the strip reduction. And a third step of calculating a zero point error of the vertical roll opening, and a fourth step of correcting the set value of the vertical roll opening at the time of the next rolling pass using the value of the zero point error. Is a method for controlling the strip width of the rolled material.

【0009】なお、前記第1の工程を可逆式粗圧延機の
下流側に設けられた板幅計によって圧延材の板幅を測定
する工程とし、前記第2の工程を前記可逆式粗圧延機を
逆パスしながら水平圧延を行わないで、前記竪型圧延機
によって一定の低荷重で幅圧下制御を行う工程としても
よい。また、前記第1の工程〜第3の工程に続けて、前
記可逆式粗圧延機を逆パスしながら水平圧延を行い、前
記竪型圧延機によって一定の低荷重で幅圧下制御を行う
第5の工程、前記幅圧下時の竪ロール開度と前記第3の
工程で得られた竪ロール開度の零点誤差の値とを演算し
て逆パス出側板幅予測値を求める第6の工程、該逆パス
出側板幅予測値を次正パスの入側板幅として次正パス時
の出側目標板幅となる竪ロール開度の設定値を求める第
7の工程、該竪ロール開度の設定値を前記零点誤差の値
を用いて補正する第8の工程、を付加するようにしても
よい。
The first step is a step of measuring the strip width of the rolled material by a strip width meter provided on the downstream side of the reversible rough rolling mill, and the second step is the reversible rough rolling mill. It is good also as a process of performing width reduction control with a fixed low load by the said vertical rolling mill, without performing horizontal rolling, passing reversely. In addition, following the first to third steps, horizontal rolling is performed while the reversible rough rolling mill is reversely passed, and width reduction control is performed by the vertical rolling mill at a constant low load. Step, a sixth step of calculating a reverse pass exit side plate width predicted value by calculating the vertical roll opening during the width reduction and the value of the zero point error of the vertical roll opening obtained in the third step, A seventh step of obtaining the set value of the vertical roll opening, which is the outgoing target plate width at the time of the next correct pass, using the predicted value of the reverse path output plate width as the input plate width of the next correct pass, setting the vertical roll opening An eighth step of correcting the value using the value of the zero point error may be added.

【0010】[0010]

【作 用】本発明によれば、板幅計の実測値と竪型圧延
機で一定の低荷重での幅圧下制御時の竪ロール開度とを
比較することによりオンラインで竪ロール開度の零点誤
差を演算して、以降の幅圧下を行う竪ロールの開度設定
に反映させるようにしたので、従来より頻繁に零点補正
を行うことができ、圧延材の板幅精度を高めることがで
きる。
[Operation] According to the present invention, by comparing the measured value of the strip width meter and the vertical roll opening during the width reduction control with a constant low load in the vertical rolling mill, the vertical roll opening can be calculated online. Since the zero point error is calculated and reflected in the opening setting of the vertical roll for performing the width reduction thereafter, the zero point correction can be performed more frequently than before, and the strip width accuracy of the rolled material can be improved. .

【0011】また、逆パス水平圧下時において、竪型圧
延機で一定の低荷重での幅圧下制御時の竪ロール開度を
板幅実測値に置き換えて次正パスの竪ロール開度を設定
するようにしたので、次正パスにおける出側板幅精度を
高めることができる。
Further, in the reverse pass horizontal reduction, the vertical roll opening at the time of width reduction control under a constant low load by the vertical rolling mill is replaced with the plate width actual measurement value to set the vertical roll opening of the next positive pass. Since this is done, the exit side plate width accuracy in the next correct pass can be improved.

【0012】[0012]

【実施例】以下に、本発明の実施例について、図面を参
照して詳しく説明する。図1は、本発明の実施例の構成
を示す平面図であり、従来例と同一部材には同一符号を
付している。この図に示すように、竪型圧延機2の竪ロ
ール2a,2aはそれぞれハウジング4,4で支持さ
れ、図示しない駆動装置で回転される。なお、この竪型
圧延機2は定圧下制御機能を備えている。
Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view showing a configuration of an embodiment of the present invention, and the same members as those in the conventional example are designated by the same reference numerals. As shown in this figure, vertical rolls 2a, 2a of the vertical rolling mill 2 are supported by housings 4 and 4, respectively, and are rotated by a drive device (not shown). The vertical rolling mill 2 has a constant rolling reduction control function.

【0013】ハウジング4,4にはそれぞれロードセル
5,5が取付けられ、圧延荷重が検出される。これらの
ハウジング4,4は油圧シリンダ6,6によって互いに
接近・離反し得るように駆動され、この油圧シリンダ
6,6に取り付けられたマグネセル等の位置センサ9,
9により油柱長さが検出され、ロール開度とされる。な
お、竪型圧延機2の上流側には別の板幅計7が設置され
る。
Load cells 5 and 5 are attached to the housings 4 and 4, respectively, and the rolling load is detected. These housings 4 and 4 are driven by hydraulic cylinders 6 and 6 so that they can move toward and away from each other, and a position sensor 9 such as a magnesel attached to the hydraulic cylinders 6 and 6,
The oil column length is detected by 9 and is set as the roll opening. In addition, another strip width gauge 7 is installed on the upstream side of the vertical rolling mill 2.

【0014】8は竪ロール開度演算制御装置で、ロード
セル5,5および2台の板幅計3,7、位置センサ9,
9からの測定信号が入力されるとともに、その演算結果
を制御信号として油圧シリンダ6,6に出力する。そこ
で、竪型圧延機2の竪ロール2a,2aの零点誤差補正
の手順について、以下に説明する。 〔実施例1〕 この第1の実施例は、正パスにおいて上
流側の板幅計7で圧延材Sの板幅を実測した場合、ある
いは、逆パスにおいて下流側の板幅計3で実測して、か
つ、逆パスの水平圧延を実施しない場合に適用するもの
である。 圧延材Sのある区間の板幅を上流側の板幅計7で測
定して、竪ロール開度演算制御装置8においてその平均
値WA を求める。 つぎに、圧延材Sの同一区間をトラッキングしなが
ら一定の低荷重による圧下制御を行って、竪ロール開度
演算制御装置8において竪ロール2a,2aの開度(位
置センサ9の検出値)の平均値EA を計算する。ここ
で、この一定低荷重圧下制御時の圧延荷重の基準値とし
ては、圧延材Sに塑性変形を生じさせない程度の軽荷重
とし、竪型圧延機2のミル定数(kN/mm)の1/20以下が
望ましい。 竪ロール開度演算制御装置8において下記式(1) を
用いて、零点誤差δを演算する。
Reference numeral 8 denotes a vertical roll opening calculation control device, which includes load cells 5, 5 and two plate width gauges 3, 7, a position sensor 9,
The measurement signal from 9 is input, and the calculation result is output to the hydraulic cylinders 6 and 6 as a control signal. Therefore, the procedure for correcting the zero point error of the vertical rolls 2a, 2a of the vertical rolling mill 2 will be described below. Example 1 In the first example, when the strip width of the rolled material S is actually measured by the strip width gauge 7 on the upstream side in the forward pass, or by the strip width gauge 3 on the downstream side in the reverse pass. In addition, it is applied when the reverse pass horizontal rolling is not performed. The strip width of a certain section of the rolled material S is measured by the strip width gauge 7 on the upstream side, and the average value W A is obtained in the vertical roll opening calculation control device 8. Next, the rolling control by the constant low load is performed while tracking the same section of the rolled material S, and the opening of the vertical rolls 2a, 2a (detection value of the position sensor 9) in the vertical roll opening calculation control device 8 is controlled. Calculate the average value E A. Here, as a reference value of the rolling load during the constant low load rolling control, a light load that does not cause plastic deformation of the rolled material S is set to 1 / m of the mill constant (kN / mm) of the vertical rolling mill 2. 20 or less is desirable. In the vertical roll opening calculation control device 8, the zero point error δ is calculated using the following equation (1).

【0015】 δ=WA −EA ……………(1) そこで、零点誤差補正前の竪ロール設定開度をE
SET とすると、零点の誤差補正を行った後の竪ロール調
整開度EADJ は、下記(2) 式によって与えられる。 EADJ =ESET −δ ……………(2) 以後、(2) 式で得られた竪ロール調整開度EADJ
用いて竪型圧延機2の竪ロール開度を設定し、次圧延パ
ス以後の圧延を行う。
Δ = W A −E A (1) Therefore, the vertical roll setting opening before the zero point error correction is E
Assuming SET , the vertical roll adjustment opening E ADJ after the error correction of the zero point is given by the following equation (2). E ADJ = E SET −δ (2) After that, set the vertical roll opening of the vertical rolling mill 2 using the vertical roll adjustment opening E ADJ obtained by the equation (2). Rolling after the rolling pass is performed.

【0016】このようなステップを経ることによって、
正パス方向の場合あるいは逆パスで水平圧下なしの場合
における竪ロールの零点調整をオンラインで行うことが
できる。 〔実施例2〕 この第2の実施例は、逆パスで水平圧下
を行う場合で、上流側の板幅計7が設置されていない場
合、あるいは設置されていても竪型圧延機2から遠方に
あって圧延材Sの板幅を実測することができない場合
に、その逆パス出側すなわち次正パス入側での竪ロール
開度の設定値を計算する場合に適用するものである。 粗圧延機1の正パス時に上記した第1の実施例で、
あらかじめ零点誤差δが求められているとする。 逆パス圧延で水平圧下された圧延材Sに、竪型圧延
機2で一定の低荷重での圧下制御を行う。そのときの竪
ロール開度をEA とすると、逆パス出側の板幅予想値W
A * は下記(3) 式で求められる。
By going through such steps,
The zero point adjustment of the vertical roll can be performed online in the case of the forward pass direction or in the case of the reverse pass without horizontal reduction. [Second Embodiment] This second embodiment is a case where horizontal reduction is performed in a reverse pass, and the strip width gauge 7 on the upstream side is not installed, or even if it is installed, it is far from the vertical rolling mill 2. Therefore, when the strip width of the rolled material S cannot be measured, it is applied when calculating the set value of the vertical roll opening on the reverse pass exit side, that is, the next normal pass entry side. In the first embodiment described above during the forward pass of the rough rolling mill 1,
It is assumed that the zero point error δ has been obtained in advance. For the rolled material S that has been horizontally rolled by the reverse pass rolling, the vertical rolling mill 2 performs rolling control with a constant low load. Assuming that the vertical roll opening at that time is E A , the expected width W of the reverse path is W
A * is calculated by the following equation (3).

【0017】 WA * =EA +δ ……………(3) ついで、(3)式で得られた板幅予想値WA * を次正
パスの入側板幅とし、次正パスの竪型圧延機2の再設定
を行い、次正パス出側の板幅目標値W0Tとなるような竪
ロール開度EC を下記(4) ,(5) で計算する。 W0T=f(EC ,WA * ) ……………(4) EC =f-1(W0T,WA * ) ……………(5) (5) 式で求められた竪ロール開度EC を用いて、次
正パスの竪ロール開度Eを下記(6) 式によって求め、竪
ロール開度を設定する。
W A * = E A + δ (3) Next, the plate width predicted value W A * obtained by the equation (3) is set as the entrance side plate width of the next positive path, and the vertical line of the next positive path is obtained. The die rolling mill 2 is reset, and the vertical roll opening E C so that the plate width target value W 0T on the exit side of the next positive pass is calculated by the following (4) and (5). W 0T = f (E C , W A * ) ………… (4) E C = f −1 (W 0T , W A * ) …………… (5) (5) Using the vertical roll opening E C , the vertical roll opening E of the next correct path is obtained by the following equation (6), and the vertical roll opening is set.

【0018】 E=EC −δ ……………(6) このようにして、板幅実測値を測定できない場合でも
(6) 式を用いることにより、次正パスの竪ロール開度E
を求めることができるから、これによって竪型圧延機2
の竪ロール開度の設定精度を高めることができる。
E = E C −δ (6) In this way, even when the actual width measurement value cannot be measured.
By using the equation (6), the vertical roll opening E of the next positive pass
Therefore, the vertical rolling mill 2
The accuracy of setting the vertical roll opening can be increased.

【0019】[0019]

【発明の効果】以上説明したように、本発明によれば、
板幅計の実測値と竪型圧延機で一定の低荷重での幅圧下
制御時の竪ロール開度とを比較することによりオンライ
ンで竪ロール開度の零点誤差を演算して、以降の幅圧下
を行う竪ロールの開度設定に反映させて、圧延材の板幅
精度を高めるようにし、また、逆パス水平圧下時におい
て、竪型圧延機で一定の低荷重での幅圧下制御時の竪ロ
ール開度を板幅実測値に置き換えて次正パスの竪ロール
開度を設定するようにして、次正パスにおける出側板幅
精度を高めるようにしたので、従来、竪型圧延機の竪ロ
ール開度設定に考慮していなかった零点誤差をオンライ
ンで求めることができ、またこの零点誤差を用いて板幅
実測値の得られないパスでの板幅を間接的に知ることが
できるようにしたから、板幅制御精度を高めることが可
能となり、製品の歩留りの向上に寄与する。
As described above, according to the present invention,
The zero point error of the vertical roll opening is calculated online by comparing the actual value of the strip width meter with the vertical roll opening during width reduction control with a constant low load on the vertical rolling mill, and the subsequent width is calculated. It is reflected in the setting of the vertical roll opening for rolling to improve the strip width accuracy of the rolled material, and during reverse pass horizontal rolling, the vertical rolling mill controls the width rolling at a constant low load. The vertical roll opening was replaced with the actual strip width measurement value to set the vertical roll opening for the next correct pass to improve the output side strip width accuracy in the next correct pass. A zero point error that was not taken into account in setting the roll opening can be calculated online, and this zero point error can be used to indirectly know the plate width on a path for which the actual measured width cannot be obtained. As a result, it is possible to increase the plate width control accuracy and It contributes to the improvement of the stops.

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

【図1】本発明の実施例の構成を示す平面図である。FIG. 1 is a plan view showing a configuration of an exemplary embodiment of the present invention.

【図2】従来例の概要を示す(a) 側面図、(b) 平面図で
ある。
FIG. 2A is a side view and FIG. 2B is a plan view showing an outline of a conventional example.

【符号の説明】[Explanation of symbols]

1 粗圧延機 2 竪型圧延機 3 板幅計 4 ハウジング 5 ロードセル 6 油圧シリンダ 7 板幅計 8 竪ロール開度演算制御装置 9 位置センサ S 圧延材 1 Roughing Mill 2 Vertical Rolling Mill 3 Strip Width Meter 4 Housing 5 Load Cell 6 Hydraulic Cylinder 7 Strip Width Meter 8 Vertical Roll Opening Calculation Control Device 9 Position Sensor S Rolled Material

フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 8315−4E B21B 37/00 113 A Continuation of front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location 8315-4E B21B 37/00 113 A

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 水平ロールを備えた粗圧延機の上流側
に設けられた定圧下制御機能を有する竪ロールを備えた
竪型圧延機を用いて圧延材の板幅を制御する方法におい
て、 前記竪型圧延機の上流側に設けられた板幅計によって圧
延材の板幅を測定する第1の工程、 前記竪型圧延機によって一定の低荷重で幅圧下制御を行
う第2の工程、 前記板幅計によって測定された板幅測定値と前記幅圧下
時の竪ロール開度とを比較して、竪ロール開度の零点誤
差を演算する第3の工程、 該零点誤差の値を用いて次圧延パス時の竪ロール開度の
設定値を補正する第4の工程、からなることを特徴とす
る圧延材の板幅制御方法。
1. A method for controlling a strip width of a rolled material by using a vertical rolling mill provided with a vertical roll having a constant reduction control function provided on the upstream side of a rough rolling mill having horizontal rolls, A first step of measuring the strip width of the rolled material by a strip width gauge provided on the upstream side of the vertical rolling mill; a second step of performing width reduction control with a constant low load by the vertical rolling mill; A third step of calculating a zero point error of the vertical roll opening by comparing the plate width measurement value measured by the plate width gauge and the vertical roll opening during the width reduction, using the value of the zero point error. A fourth step for correcting the set value of the vertical roll opening at the time of the next rolling pass, and a strip width control method for a rolled material.
【請求項2】 前記第1の工程を可逆式粗圧延機の下
流側に設けられた板幅計によって圧延材の板幅を測定す
る工程とし、前記第2の工程を前記可逆式粗圧延機を逆
パスしながら水平圧延を行わないで、前記竪型圧延機に
よって一定の低荷重で幅圧下制御を行う工程としたこと
を特徴とする請求項1記載の圧延材の板幅制御方法。
2. The first step is a step of measuring the strip width of a rolled material by a strip width meter provided on the downstream side of the reversible rough rolling mill, and the second step is the reversible rough rolling mill. The method for controlling the strip width of a rolled material according to claim 1, wherein the step of performing width reduction control with a constant low load by the vertical rolling mill without performing horizontal rolling while performing reverse pass.
【請求項3】 前記第1の工程〜第3の工程に続け
て、 前記可逆式粗圧延機を逆パスしながら水平圧延を行い、
前記竪型圧延機によって一定の低荷重で幅圧下制御を行
う第5の工程、 前記幅圧下時の竪ロール開度と前記第3の工程で得られ
た竪ロール開度の零点誤差の値とを演算して逆パス出側
板幅予測値を求める第6の工程、 該逆パス出側板幅予測値を次正パスの入側板幅として次
正パス時の出側目標板幅となる竪ロール開度の設定値を
求める第7の工程、 該竪ロール開度の設定値を前記零点誤差の値を用いて補
正する第8の工程、を付加したことを特徴とする請求項
1記載の圧延材の板幅制御方法。
3. Subsequent to the first step to the third step, horizontal rolling is performed while the reversible rough rolling mill is reversely passed,
A fifth step of performing width reduction control with a constant low load by the vertical rolling mill, a vertical roll opening during the width reduction, and a zero point error value of the vertical roll opening obtained in the third step. Is calculated to obtain a predicted value for the reverse-pass exit-side plate width, and the reverse-pass exit-side plate width predicted value is used as the entrance-side plate width for the next correct pass to become the exit-side target plate width for the next correct pass. The rolled material according to claim 1, further comprising a seventh step of obtaining a set value of the degree, and an eighth step of correcting the set value of the vertical roll opening by using the value of the zero point error. Board width control method.
JP6229153A 1994-09-26 1994-09-26 Method for controlling width of rolling stock Pending JPH0890030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6229153A JPH0890030A (en) 1994-09-26 1994-09-26 Method for controlling width of rolling stock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6229153A JPH0890030A (en) 1994-09-26 1994-09-26 Method for controlling width of rolling stock

Publications (1)

Publication Number Publication Date
JPH0890030A true JPH0890030A (en) 1996-04-09

Family

ID=16887614

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6229153A Pending JPH0890030A (en) 1994-09-26 1994-09-26 Method for controlling width of rolling stock

Country Status (1)

Country Link
JP (1) JPH0890030A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010109637A1 (en) * 2009-03-26 2010-09-30 東芝三菱電機産業システム株式会社 Reference position adjustment and monitoring device
CN102825072A (en) * 2011-06-17 2012-12-19 宝山钢铁股份有限公司 Method for setting vertical roll gap by centering side guide plates, measuring width and correcting

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010109637A1 (en) * 2009-03-26 2010-09-30 東芝三菱電機産業システム株式会社 Reference position adjustment and monitoring device
JP5261573B2 (en) * 2009-03-26 2013-08-14 東芝三菱電機産業システム株式会社 Reference position adjustment monitoring device
KR101320717B1 (en) * 2009-03-26 2013-10-21 도시바 미쓰비시덴키 산교시스템 가부시키가이샤 Reference position adjustment and monitoring device
CN102825072A (en) * 2011-06-17 2012-12-19 宝山钢铁股份有限公司 Method for setting vertical roll gap by centering side guide plates, measuring width and correcting
CN102825072B (en) * 2011-06-17 2014-12-24 宝山钢铁股份有限公司 Method for setting vertical roll gap by centering side guide plates, measuring width and correcting

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