JPH0631324A - Method for controlling plate width in hot rolling - Google Patents

Method for controlling plate width in hot rolling

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Publication number
JPH0631324A
JPH0631324A JP4192034A JP19203492A JPH0631324A JP H0631324 A JPH0631324 A JP H0631324A JP 4192034 A JP4192034 A JP 4192034A JP 19203492 A JP19203492 A JP 19203492A JP H0631324 A JPH0631324 A JP H0631324A
Authority
JP
Japan
Prior art keywords
plate width
rolling mill
skid mark
rolling
change
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.)
Granted
Application number
JP4192034A
Other languages
Japanese (ja)
Other versions
JP2968647B2 (en
Inventor
Atsushi Ishii
井 篤 石
Shigeru Ogawa
川 茂 小
Kenji Yamada
田 健 二 山
Tadatsugu Yoshida
田 忠 継 吉
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
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Filing date
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Priority to JP4192034A priority Critical patent/JP2968647B2/en
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Abstract

PURPOSE:To improve the accuracy of a plate width by detecting the position of a skid mark in advance and accurately predicting the variation of the plate width in a finish rolling time in consideration of deformation resistance at the position of a skid mark. CONSTITUTION:The position of the skid mark is detected from the measured result of temperature distribution in the rolling direction of a rolled stock 1 or the change of rolling load in rough rolling mills 3, 5. Variation of the plate width which are predicted to appear in a finishing mill 7 is calculated by the plate thickness of the rolled stock at each stand, drafts, tensions between stands, change of a crown rate, the deformation resistance of the rolled stock, the temperature of the rolled stock, passing temperatures between stands through every stationary part and skid mark part. The opening amount of an edger mounted on a rough mill and/or a finishing mill is set from this calculation value and a target plate width value and further a short stroke is controlled by the edger so that the change of the plate width of the skid mark part is compensated. In this way, since the variation of the plate width in the time of finishing roll is predicated accurately, the plate width accuracy is improved and the yield is improved.

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、熱間圧延における板幅
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 in hot rolling.

【0002】[0002]

【従来の技術】従来の熱間仕上圧延機の板幅制御方法と
しては、仕上圧延機における板幅変化量を測定または演
算により求め、この測定値または演算値に基づいてスタ
ンド間張力を変化させて板幅を制御する方法(例えば特
開平1−262011号公報),粗圧延機および/また
は仕上圧延機入口に設置されたエッジャーの開度を制御
して圧延材料の板幅を制御する方法(例えば特開昭62
−68616号公報)が知られている。
2. Description of the Related Art A conventional strip width control method for a hot finish rolling mill is one in which the strip width variation amount in the finish rolling mill is measured or calculated and the tension between stands is changed based on the measured value or the calculated value. (For example, Japanese Patent Laid-Open No. 1-262011), a method of controlling the opening of an edger installed at the entrance of a rough rolling mill and / or a finishing rolling mill to control the width of rolled material ( For example, JP-A-62
No. -68616) is known.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、上記従
来法では、仕上圧延機での板幅変化量を演算する際に,
スキッドマーク部の変形抵抗の変化に対する考慮がない
ため、これに伴う長手方向の板幅変動を避けることがで
きず、充分な板幅精度を得ることができない。
However, in the above-mentioned conventional method, when calculating the strip width change amount in the finish rolling mill,
Since there is no consideration for the change in deformation resistance of the skid mark portion, it is impossible to avoid a variation in the plate width in the longitudinal direction due to this, and it is not possible to obtain sufficient plate width accuracy.

【0004】また、仕上圧延機出側の板幅を板幅計によ
り測定し、フィードバック制御により板幅を調整する場
合においても、むだ時間が大きいためスキッドマーク位
置の板幅を的確に調整することは困難である。
Further, when the strip width on the delivery side of the finish rolling mill is measured by a strip width meter and the strip width is adjusted by feedback control, the strip time at the skid mark position is properly adjusted because the dead time is large. It is difficult.

【0005】本発明は、上記で述べたような問題点を解
消するために、圧延材の圧延方向温度分布の計測結果ま
たは粗圧延機における圧延荷重の変化からスキッドマー
クの位置を検出し、スキッドマークでの板幅変動を考慮
に入れて仕上圧延機での板幅変化を高精度に予測し、従
来に比して高精度な板幅制御が可能な熱間圧延における
板幅制御法を提供することを目的とする。
In order to solve the above-mentioned problems, the present invention detects the position of the skid mark from the measurement result of the temperature distribution in the rolling direction of the rolled material or the change of the rolling load in the rough rolling mill to detect the skid mark position. We provide a strip width control method in hot rolling that can predict strip width changes in finishing mills with high precision by taking into account strip width variations in marks, and can perform strip width control with higher precision than before. The purpose is to do.

【0006】[0006]

【課題を解決するための手段】本発明は、上記のような
従来法の欠点を有利に排除しうる熱間圧延における板幅
制御法であり、その要旨とするところは、圧延材の圧延
方向温度分布の計測結果または粗圧延機における圧延荷
重の変化からスキッドマークの位置を検出し、仕上圧延
機で生じると予想される板幅変化量を、各スタンドにお
ける圧延材の板厚,圧下率,スタンド間張力,クラウン
比率変化,圧延材変形抵抗,圧延材温度,スタンド間通
過時間から、定常部及びスキッドマーク部毎に演算し、
この演算値と目標板幅値から粗圧延機および/または仕
上圧延機に設置してあるエッジャーの開度量を設定し、
さらにスキッドマーク部の板幅変化を補償するように該
エッジャーでショートストローク制御することを特徴と
したものである。
DISCLOSURE OF THE INVENTION The present invention is a strip width control method in hot rolling which can advantageously eliminate the drawbacks of the conventional methods as described above, and the gist thereof is the rolling direction of the rolled material. The position of the skid mark is detected from the measurement result of the temperature distribution or the change of rolling load in the rough rolling mill, and the amount of change in strip width expected to occur in the finish rolling mill is calculated by using the thickness of the rolled material at each stand, the reduction ratio, Calculated for each steady part and skid mark part from the tension between stands, crown ratio change, rolling material deformation resistance, rolling material temperature, passing time between stands,
From this calculated value and the target strip width value, set the opening amount of the edger installed in the rough rolling mill and / or the finishing rolling mill,
Further, the edger controls the short stroke so as to compensate for the change in the plate width of the skid mark portion.

【0007】[0007]

【作用】以下、図2に示すフローにしたがって詳細に説
明する。まず、図3に示されるような、粗圧延機の圧延
荷重検出装置によって測定された圧延方向荷重分布また
は粗圧延機後面の温度計によって検出された圧延方向温
度分布から、圧延材のスキッドマークの位置を推定する
(例えば、圧延材先頭からj番目のスキッドマークの位
置は、
The operation will be described in detail below according to the flow shown in FIG. First, from the rolling direction load distribution measured by the rolling load detection device of the rough rolling mill or the rolling direction temperature distribution detected by the thermometer on the rear surface of the rough rolling mill as shown in FIG. Estimate the position (For example, the position of the jth skid mark from the top of the rolled material is

【0008】[0008]

【数01】 [Equation 01]

【0009】次に、仕上圧延機入側の板厚Hin ,クラ
ウン量Cin ,板幅Win ,圧延材温度Tin を計測ある
いは推定により求める。また、上記で決定した
Next, the sheet thickness H in , the crown amount C in , the sheet width W in , and the rolled material temperature T in on the entry side of the finish rolling mill are determined by measurement or estimation. Also determined above

【0010】[0010]

【数02】 [Equation 02]

【0011】さらに、仕上セットアップ計算と同等の計
算機能を用いて、これらの値と圧延材の材料特性および
仕上圧延機出側の目標板厚,目標クラウン量などに基づ
いて、仕上圧延機各スタンドでのロールギャップ(圧下
スケジュール),ロールベンディング力(クラウンスケ
ジュール),ロール周速,スタンド間張力が決まる。こ
のセットアップ値にしたがって、仕上圧延機での板幅変
化量を演算する。以下、この演算過程について説明を行
う。
Further, by using a calculation function equivalent to the finish setup calculation, based on these values, the material characteristics of the rolled material, the target plate thickness on the delivery side of the finish rolling mill, the target crown amount, etc., each stand of the finishing rolling mill is The roll gap (roll down schedule), roll bending force (crown schedule), roll peripheral speed, and stand tension are determined. According to this setup value, the amount of change in strip width in the finish rolling mill is calculated. Hereinafter, this calculation process will be described.

【0012】板幅変化は、図8に示すような3つの領域
で起り、ロールバイト入口近傍で幅縮みが、ロールバイ
ト内で幅広がりが、スタンド間において幅縮みが生じて
いると考えられる。したがって、仕上圧延機での板幅変
化を予測する場合は、メカニズムの異なる各領域毎に板
幅変化特性を把握し予測を行えば、高精度な予測が可能
であると考えられる。
It is considered that the plate width changes occur in three regions as shown in FIG. 8, and the width shrinkage occurs near the roll bite inlet, the width spreads in the roll bite, and the width shrinkage occurs between stands. Therefore, when predicting the strip width change in the finish rolling mill, it is considered that highly precise forecasting is possible if the strip width change characteristics are grasped and predicted for each region having a different mechanism.

【0013】そこで、本発明では高精度な予測を行うた
めに、このような3つの領域毎に板幅予測を行うという
ステップを踏んでいる。
Therefore, in the present invention, in order to make a highly accurate prediction, a step of making a plate width prediction for each of these three regions is taken.

【0014】図4から図7は、ロールバイト(RB)近
傍の領域について板圧延解析システム(3次元剛塑性F
EMによる板変形解析と分割モデルによる汎用のロール
変形解析コードを連成させたもの)を用いて解析した結
果である。これらの結果からわかるようにRB入口,R
B内における幅変化量ΔW1 ,ΔW2 は、出側板厚h,
圧下率r,入,出側張力Ti ,To ,クラウン比率変化
r =Ch /h−CH/H(CH ,Ch ;入,出側のクラ
ウン量、H,h:入,出側板厚),変形抵抗kf の関数
として下記(1),(2)式によって求められる。
FIGS. 4 to 7 show a plate rolling analysis system (three-dimensional rigid plasticity F for the region near the roll bite (RB)).
It is the result of analysis using a plate deformation analysis by EM and a general-purpose roll deformation analysis code by a division model). As you can see from these results, RB entrance, R
The width changes ΔW 1 and ΔW 2 in B are determined by the outlet plate thickness h,
Reduction ratio r, inlet and outlet tensions T i , T o , crown ratio change C r = C h / h-C H / H ( CH , C h ; inlet and outlet crown amounts, H, h: input , Output plate thickness) and deformation resistance k f as a function of the following equations (1) and (2).

【0015】 ΔW1 =ΔW1 (h,r,Ti ,To ,Cr ,kf ) ・・・(1) ΔW2 =ΔW2 (h,r,Ti ,To ,Cr ,kf ) ・・・(2) したがって,No.iスタンドにおけるRB入近傍での
板幅変化量,PB内での板幅変化量を、
[0015] ΔW 1 = ΔW 1 (h, r, T i, T o, C r, k f) ··· (1) ΔW 2 = ΔW 2 (h, r, T i, T o, C r, k f) ··· (2) Therefore, No. The plate width change amount in the vicinity of the RB on the i stand and the plate width change amount in the PB are

【0016】[0016]

【数03】 [Equation 03]

【0017】とすると、仕上圧延機全スタンドのRB入
口近傍およびRB内で生じる板幅変化量ΔW1 ,ΔW2
は、(1),(2)式より下記(3),(4)式のよう
に算出される。
Then, strip width variations ΔW 1 and ΔW 2 that occur near the RB inlet of all stands of the finish rolling mill and in the RB.
Is calculated from the equations (1) and (2) as in the following equations (3) and (4).

【0018】[0018]

【数1】 [Equation 1]

【0019】但し、ΣはスタンドNo.iに関する総和
記号であり、
However, Σ is the stand number. is the summation symbol for i,

【0020】[0020]

【数04】 [Formula 04]

【0021】である。[0021]

【0022】また、スタンド間での板幅変形について
は、第35回塑性加工連合講演論文集(1984)第277〜280
頁で述べられているように、短時間で生じるクリープ変
形であると考えられ、No.iからi+1スタンド間に
生じる板幅変化量
Further, regarding the plate width deformation between the stands, the 35th Plastic Working Confederation Lecture Collection (1984) No. 277-280.
As described in the page, it is considered that the creep deformation occurs in a short time. Amount of change in plate width between i and i + 1 stand

【0023】[0023]

【数05】 [Equation 05]

【0024】したがって、仕上圧延機全スタンド間で生
じる板幅変化量△W3 は、下記(5)式のように算出さ
れる。
Therefore, the strip width change amount ΔW 3 occurring between all stands of the finish rolling mill is calculated by the following equation (5).

【0025】[0025]

【数2】 [Equation 2]

【0026】上記より、仕上圧延機で生じる板幅変化量
の総和△Wは下記(6)式のように算出される。
From the above, the total ΔW of the sheet width change amount generated in the finish rolling mill is calculated by the following equation (6).

【0027】 △W=△W1 +△W2 +△W3 ・・・(6) また、同様にj番目のスキッドマーク部で生じる仕上圧
延機における板幅変化量の総和
ΔW = ΔW 1 + ΔW 2 + ΔW 3 (6) Further, similarly, the total amount of change in strip width in the finish rolling mill occurring at the j-th skid mark portion.

【0028】[0028]

【数06】 [Expression 06]

【0029】下記(7)式のように算出される。It is calculated by the following equation (7).

【0030】[0030]

【数3】 [Equation 3]

【0031】従って、仕上圧延機入側板幅をWin と板
幅変化量△Wから、出側板幅Wout は、次式のように算
出される。
Therefore, the output side strip width Wout is calculated from the following formula by using the finish rolling mill inlet side strip width W in and the strip width change amount ΔW.

【0032】 Wout =Win +△W ・・・(8) 以上より演算された仕上圧延機出側板幅Wout と仕上圧
延機出側目標板幅Wpを一致させるように幅戻りを考慮
した上で、初期のエッジャー開度量We を設定する。
W out = W in + ΔW (8) Considering width return so that the finish rolling mill exit side strip width W out calculated above and the finish rolling mill exit side target strip width W p match Then, the initial edger opening amount W e is set.

【0033】さらにスキッドマーク部に対しては、初期
のエッジャー開度量We から、スキッドマーク部と考常
部との幅変化量の差分、すなわち、次式に示される初期
板幅変化量
Further, for the skid mark portion, the difference between the initial edger opening amount W e and the width change amount between the skid mark portion and the considered portion, that is, the initial plate width change amount expressed by the following equation:

【0034】[0034]

【数07】 [Equation 07]

【0035】相当する分だけエッジャーのショートスト
ローク制御を行えば、スキッドマーク部の板幅変化を補
償でき、より高精度な板幅制御が可能となる。
If the short stroke control of the edger is performed by a corresponding amount, it is possible to compensate for the change in the plate width of the skid mark portion, and it is possible to perform the plate width control with higher accuracy.

【0036】[0036]

【数4】 [Equation 4]

【0037】[0037]

【実施例】以下、本発明の実施例を、本発明における装
置の構成図を示す図1に基づいて説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIG. 1 showing a block diagram of an apparatus in the present invention.

【0038】圧延材1が粗の水平圧延機5を通過中、圧
延荷重の変動を圧延荷重検出装置によって測定し、その
データからスキッドマークの位置を推定する。または、
粗圧延機5後面に設置されている温度計11から長手方
向の温度分布を求め、それよりスキッドマークの位置を
推定してもよい。
While the rolled material 1 passes through the rough horizontal rolling mill 5, the fluctuation of the rolling load is measured by the rolling load detecting device, and the position of the skid mark is estimated from the data. Or
The temperature distribution in the longitudinal direction may be obtained from the thermometer 11 installed on the rear surface of the rough rolling mill 5, and the position of the skid mark may be estimated from the temperature distribution.

【0039】次に粗圧延機後面の板厚計12,板幅計1
3の測定結果により、仕上圧延機入側の板厚,クラウン
量,板幅が計測または推定される。同時に上記のスキッ
ドマーク位置の推定結果からスキッドマーク部の温度,
板厚,クラウン量,板幅も計測または推定される。
Next, a strip thickness gauge 12 and a strip width gauge 1 on the rear surface of the rough rolling mill
According to the measurement result of No. 3, the plate thickness, crown amount, and plate width on the entry side of the finish rolling mill are measured or estimated. At the same time, the temperature of the skid mark,
Plate thickness, crown amount, and plate width are also measured or estimated.

【0040】演算処理装置17においては、これらの値
と圧延材の材料特性および仕上圧延機出側の目標板厚,
目標クラウン量などに基づいて仕上圧延機各スタンドで
のロールギャップ,ロールベンディング力,ロール周速
およびスタンド間張力を決定する仕上セットアップ計算
を行い、仕上圧延機制御装置16にその情報が伝えら
れ、各スタンドの圧延条件が設定される。
In the arithmetic processing unit 17, these values, the material properties of the rolled material and the target plate thickness on the delivery side of the finishing rolling mill,
Finishing setup calculation for determining the roll gap, roll bending force, roll peripheral speed, and inter-stand tension at each stand of the finish rolling mill based on the target crown amount and the like is performed, and the information is transmitted to the finish rolling mill control device 16. Rolling conditions for each stand are set.

【0041】さらに、演算処理装置17においては、仕
上セットアップ計算機能により決定された仕上圧延機5
の各スタンドでの圧延条件(圧下率,スタンド間張力,
クラウン比率変化,入出側板厚,圧延材温度,変形抵抗
およびスタンド間通過時間)より仕上圧延機で生じると
予想される板幅変化量を上述の(6),(8)式を用いて演算
する。その演算値と目標板幅値を一致させるように初期
のエッジャー開度量を求め、エッジャー制御装置15によ
り仕上圧延機前に設置されたエッジャー装置6を制御し
板幅を制御する。
Further, in the arithmetic processing unit 17, the finish rolling mill 5 determined by the finish setup calculation function.
Rolling conditions at each stand (reduction ratio, inter-stand tension,
The amount of change in strip width, which is expected to occur in the finishing mill, is calculated from Eqs. (6) and (8) based on the change in crown ratio, strip thickness at inlet and outlet sides, rolling material temperature, deformation resistance, and transit time between stands. . The initial edger opening amount is calculated so that the calculated value and the target strip width value match, and the striper control device 15 controls the striper device 6 installed in front of the finish rolling mill to control the strip width.

【0042】さらに、スキッドマーク部においては、
(7)式を用いて板幅変化量を推定し、(9)式によってスキ
ッドマーク部の初期板幅変更量
Further, in the skid mark part,
Estimate the width change using equation (7), and change the initial width of the skid mark using equation (9).

【0043】[0043]

【数08】 [Equation 08]

【0044】これに相当する分だけエッジャーのショー
トストローク制御を行い、スキッドマーク部の板幅変化
を補償し、高精度な板幅制御を行う。
The short stroke control of the edger is performed by an amount equivalent to this, the variation of the plate width of the skid mark portion is compensated, and the plate width control with high accuracy is performed.

【0045】なお、エッジャー開度を求める際には、幅
圧下により生じるドッグボーン形状に起因する幅戻り量
を考慮することは言うまでもない。
Needless to say, when the edger opening is calculated, the width return amount due to the dogbone shape caused by the width reduction is taken into consideration.

【0046】以上、仕上圧延機前に設置されたエッジャ
ー装置6によって板幅を制御した場合の実施例を説明し
たが、次に、エッジャー装置6がなく粗圧延機前に設置
されたエッジャー装置4によって板幅を制御する場合の
実施例について説明する。
The embodiment in which the strip width is controlled by the edger device 6 installed in front of the finish rolling mill has been described above. Next, the edger device 4 installed in front of the rough rolling mill without the edger device 6 is described. An example in which the plate width is controlled by the following will be described.

【0047】エッジャー装置4によって板幅を制御する
場合は、粗の水平圧延機3における荷重変化または、粗
圧延機3後面に設置されている温度計8によってスキッ
ドマークの位置を推定する。また、セットアップ計算前
の初期の板厚,クラウン重,板幅は、スキッドマーク部
も含め粗圧延機3後面に設置されている板厚計9,板幅
計10によって計測される。演算処理装置17において
は、粗の水平圧延機5の圧延条件を設定し、上記と同様
にセットアップ計算を行い、仕上圧延機各スタンドの圧
延条件が設定される。したがって、板幅変化量の演算に
おいては、粗の水平圧延機5近傍,水平圧延機5と仕上
No.1圧延機間で生じると予想される板幅変化量も考
慮し、さらにスキッドマーク部を含めて、上記と同様に
板幅変化量の予測演算を行い、エッジャー装置4によっ
て板幅を制御する。
When the plate width is controlled by the edger device 4, the load change in the rough horizontal rolling mill 3 or the position of the skid mark is estimated by the thermometer 8 installed on the rear surface of the rough rolling mill 3. The initial plate thickness, crown weight, and plate width before setup calculation are measured by the plate thickness meter 9 and the plate width meter 10 installed on the rear surface of the rough rolling mill 3 including the skid mark portion. In the arithmetic processing unit 17, the rolling conditions of the rough horizontal rolling mill 5 are set, the setup calculation is performed in the same manner as described above, and the rolling conditions of each stand of the finish rolling mill are set. Therefore, in the calculation of the strip width change amount, in the vicinity of the rough horizontal rolling mill 5, the horizontal rolling mill 5 and the finishing No. The plate width change amount expected to occur between one rolling mill is also taken into consideration, and the prediction calculation of the plate width change amount including the skid mark portion is performed in the same manner as described above, and the plate width is controlled by the edger device 4.

【0048】なお、本実施例では、粗圧延機および/ま
たは仕上圧延機入口に設置してあるエッジャーによる制
御法について述べたが、本発明は、仕上圧延機のスタン
ド間にエッジャーを有する設備や張力圧延によって板幅
制御を行う他の設備に実施しても同様の効果を得ことが
できる。
In this embodiment, the control method by the edger installed at the entrance of the rough rolling mill and / or the finishing rolling mill is described. However, the present invention is not limited to the equipment having the edger between the stands of the finishing rolling mill. The same effect can be obtained even if it is applied to other equipment for controlling the strip width by tension rolling.

【0049】[0049]

【発明の効果】本発明は以上説明した通り、予めスキッ
ドマークの位置を検出し、スキッドマークの位置での変
形抵抗の変化を考慮に入れて正確に仕上圧延時の板幅変
化量を予測しているので、従来に比べ板幅精度を向上す
ることができ、歩留を向上させるという効果が得られ
る。
As described above, the present invention detects the position of the skid mark in advance and accurately predicts the strip width change amount during finish rolling in consideration of the change in deformation resistance at the skid mark position. Therefore, the plate width accuracy can be improved as compared with the conventional case, and the effect of improving the yield can be obtained.

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

【図1】 本発明を一態様で実施するための装置構成を
示すブロック図である。
FIG. 1 is a block diagram showing a device configuration for implementing the present invention in one aspect.

【図2】 本発明の板幅制御法の内容を示すフロ−チャ
−トである。
FIG. 2 is a flowchart showing the content of the strip width control method of the present invention.

【図3】 スキッドマークによる圧延荷重の変動と圧延
材の温度分布を示すグラフである。
FIG. 3 is a graph showing fluctuations in rolling load due to skid marks and temperature distribution of rolled material.

【図4】 RB入口およびRB出口での板幅変化量と圧
下率との関係を示したグラフである。
FIG. 4 is a graph showing the relationship between the plate width change amount and the rolling reduction at the RB inlet and the RB outlet.

【図5】 板幅変化量と入,出側張力との関係を出側板
厚h毎に示すグラフである。
FIG. 5 is a graph showing the relationship between the plate width change amount and the inlet / outlet tension for each outlet plate thickness h.

【図6】 板幅変化量とクラウン比率変化量との関係を
示すグラフである。
FIG. 6 is a graph showing the relationship between the plate width change amount and the crown ratio change amount.

【図7】 板幅変化量と変形抵抗との関係を示すグラフ
である。
FIG. 7 is a graph showing the relationship between the plate width change amount and the deformation resistance.

【図8】 仕上圧延時の板幅変化挙動を模式的に表わし
た平面図である。
FIG. 8 is a plan view schematically showing a strip width change behavior during finish rolling.

【符号の説明】[Explanation of symbols]

1:圧延材 2,4:粗圧
延機のエッジャー 3,5:粗の水平圧延機 6:仕上圧延機前に設置されたエッジャー 7:7スタンドのロールを備えた仕上圧延機 8:粗圧延機3後面に設置された温度計 9:粗圧延機3後面に設置された板厚計 10:粗圧延機3後面に設置された板幅計 11:粗圧延機5後面に設置された温度計 12:粗圧延機5後面に設置された板厚計 13:粗圧延機5後面に設置された板幅計 14:圧延荷重検出装置 15:エッ
ジャー制御装置 16:仕上圧延機制御装置 17:演算
処理装置
1: rolled material 2, 4: edger of rough rolling mill 3, 5: rough horizontal rolling mill 6: edger installed in front of finishing rolling mill 7: finishing rolling mill equipped with stand rolls 8: rough rolling mill 3 Thermometer installed on the rear surface 9: Thickness gauge installed on the rear surface of the rough rolling mill 3 10: Strip width meter installed on the rear surface of the rough rolling mill 3 11: Thermometer installed on the rear surface of the rough rolling mill 5 12 : Thickness gauge installed on the rear surface of the rough rolling mill 5: Strip width gauge installed on the rear surface of the rough rolling mill 5 14: Rolling load detection device 15: Edger control device 16: Finishing rolling mill control device 17: Arithmetic processing device

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成4年8月18日[Submission date] August 18, 1992

【手続補正1】[Procedure Amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0033[Correction target item name] 0033

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【0033】さらにスキッドマーク部に対しては、初期
のエッジャー開度量We から、スキッドマーク部と定常
との幅変化量の差分、すなわち、次式に示される初期
板幅変化量
[0033] For a further skid mark portion, from the initial edger opening degree W e, skid mark portion and the steady-state
Difference of the width change from the part , that is, the initial plate width change shown by the following equation

───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉 田 忠 継 富津市新富20−1 新日本製鐵株式会社技 術開発本部内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadatsugu Yoshida 20-1 Shintomi, Futtsu City Nippon Steel Corporation Technical Development Division

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】圧延材の圧延方向温度分布の計測結果また
は粗圧延機における圧延荷重の変化からスキッドマーク
の位置を検出し、仕上圧延機で生じると予想される板幅
変化量を、各スタンドにおける圧延材の板厚,圧下率,
スタンド間張力,クラウン比率変化,圧延材変形抵抗,
圧延材温度,スタンド間通過時間から、定常部及びスキ
ッドマーク部毎に演算し、この演算値と目標板幅値から
粗圧延機および/または仕上圧延機に設置してあるエッ
ジャーの開度量を設定し、さらにスキッドマーク部の板
幅変化を補償するように該エッジャーでショートストロ
ーク制御することを特徴とする熱間圧延における板幅制
御方法。
1. The position of the skid mark is detected from the measurement result of the temperature distribution in the rolling direction of the rolled material or the change of the rolling load in the rough rolling mill, and the plate width variation amount expected to occur in the finish rolling mill is calculated for each stand. Thickness of rolled material, rolling reduction,
Tension between stands, Crown ratio change, Rolling material deformation resistance,
From the rolling material temperature and the passing time between stands, calculate for each steady part and skid mark part, and from this calculated value and the target strip width value, set the opening degree of the edger installed in the rough rolling mill and / or finish rolling mill. In addition, the strip width control method in hot rolling is characterized in that the short stroke is controlled by the edger so as to compensate for the strip width change in the skid mark portion.
JP4192034A 1992-07-20 1992-07-20 Strip width control method in hot rolling Expired - Lifetime JP2968647B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4192034A JP2968647B2 (en) 1992-07-20 1992-07-20 Strip width control method in hot rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4192034A JP2968647B2 (en) 1992-07-20 1992-07-20 Strip width control method in hot rolling

Publications (2)

Publication Number Publication Date
JPH0631324A true JPH0631324A (en) 1994-02-08
JP2968647B2 JP2968647B2 (en) 1999-10-25

Family

ID=16284505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4192034A Expired - Lifetime JP2968647B2 (en) 1992-07-20 1992-07-20 Strip width control method in hot rolling

Country Status (1)

Country Link
JP (1) JP2968647B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100964902B1 (en) * 2003-07-10 2010-06-23 주식회사 포스코 Skid portion thickness variation control methode of rolling material
CN107185967A (en) * 2017-06-30 2017-09-22 天津市中重科技工程有限公司 A kind of SSC short stroke controls compensation method end to end of strip

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101320717B1 (en) * 2009-03-26 2013-10-21 도시바 미쓰비시덴키 산교시스템 가부시키가이샤 Reference position adjustment and monitoring device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100964902B1 (en) * 2003-07-10 2010-06-23 주식회사 포스코 Skid portion thickness variation control methode of rolling material
CN107185967A (en) * 2017-06-30 2017-09-22 天津市中重科技工程有限公司 A kind of SSC short stroke controls compensation method end to end of strip
CN107185967B (en) * 2017-06-30 2019-06-18 天津市中重科技工程有限公司 A kind of strip SSC short stroke control compensation method end to end

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