JPS63168210A - Method for controlling width of sheet in sheet rolling - Google Patents
Method for controlling width of sheet in sheet rollingInfo
- Publication number
- JPS63168210A JPS63168210A JP61311771A JP31177186A JPS63168210A JP S63168210 A JPS63168210 A JP S63168210A JP 61311771 A JP61311771 A JP 61311771A JP 31177186 A JP31177186 A JP 31177186A JP S63168210 A JPS63168210 A JP S63168210A
- Authority
- JP
- Japan
- Prior art keywords
- rolling mill
- rolling
- load
- vertical
- tension
- 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
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims description 16
- 238000003079 width control Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 3
- 230000004043 responsiveness Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、板圧延における板幅制御方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for controlling a strip width in strip rolling.
（従来の技術）
板圧延たとえばホットストリップ圧延における鋼板の板
幅精度は、次工程での側縁部トリム代の削減や幅不足に
よる格落ちの減少等の点から歩留に対し大きな影響を及
ぼす。近年、スラブ幅集約化に伴なう幅大圧下圧延や加
熱炉の低温抽出など板幅精度を低下させる要因が増加し
、板幅制御の役割は非常に重要なものとなっている。板
幅制御方法の１つとして、粗圧延段階で竪形圧延機のロ
ール開度を制御して圧延材の板幅を制御する方法が従来
から行われている。この粗圧延段階におけ′る板幅制御
の代表的な方法として、例えば特開昭５９−９４５１３
号公報に記載のようなゲージメーター方式による方法が
ある。(Prior art) The width accuracy of steel plates during plate rolling, such as hot strip rolling, has a significant impact on yield in terms of reducing side edge trim allowance in the next process and reducing downgrades due to insufficient width. . In recent years, factors that reduce plate width accuracy have increased, such as large-width reduction rolling due to the consolidation of slab widths and low-temperature extraction in heating furnaces, and the role of plate width control has become extremely important. As one of the strip width control methods, a method has been conventionally used in which the width of the rolled material is controlled by controlling the roll opening degree of a vertical rolling mill during the rough rolling stage. As a typical method of strip width control in this rough rolling stage, for example, Japanese Patent Application Laid-Open No. 59-94513
There is a method using a gauge meter method as described in the above publication.
第２図にゲージメーター方式による制御系の基本構成を
示す。図において１は圧延材で矢印方向に進行する。２
は竪形圧延機の竪ロール、３は水平圧延機の水平ロール
、４は竪形圧延機に設置された荷重計、５は竪形圧延機
のロール開度を検出する位置検出器である。６は圧延開
始から一定時間後に荷重計４で検出した圧延荷重を記憶
させたロックオン荷重とそれ以降に時々刻々荷重計４で
検出した圧延荷重との偏差を算出する演算器、７は演算
器６からの偏差信号にもとづいて竪形圧延機のロール開
度修正量を算出する演算器、８は演算器７からのロール
開度修正信号と位置検出器５からのロール開度検出信号
とにもとづいて竪形圧延機のロール開度を制御する制御
装置である。Figure 2 shows the basic configuration of the gauge meter control system. In the figure, 1 is a rolled material that progresses in the direction of the arrow. 2
3 is a vertical roll of a vertical rolling mill, 3 is a horizontal roll of a horizontal rolling mill, 4 is a load meter installed in the vertical rolling mill, and 5 is a position detector for detecting the roll opening degree of the vertical rolling mill. 6 is a calculator that calculates the deviation between the lock-on load, which stores the rolling load detected by the load cell 4 after a certain period of time from the start of rolling, and the rolling load detected by the load cell 4 every moment thereafter; 7 is a calculator 8 is a calculation unit that calculates the roll opening correction amount of the vertical rolling mill based on the deviation signal from the calculation unit 7; This is a control device that basically controls the roll opening degree of a vertical rolling mill.
（発明が解決しようとする問題点）
ところで上記従来の方法においては、ロックオン荷重と
圧延中の検出荷重との偏差を算出するにあたり、荷重計
４で検出して得られた値をそのまま用いている。しかし
この検出荷重値には圧延材が竪形圧延機と水平圧延機に
同時に噛込んでいるときの圧延機間の張力に起因する外
乱が存在しており、検出荷重値をそのまま用いたのでは
前記外乱が制御系の応答性、安定性ひいては板幅精度に
悪影響を及ぼすという問題があった。(Problem to be Solved by the Invention) In the above conventional method, when calculating the deviation between the lock-on load and the detected load during rolling, the value detected by the load cell 4 is directly used. There is. However, there is a disturbance in this detected load value due to the tension between the rolling mills when the rolled material is caught in the vertical rolling mill and the horizontal rolling mill at the same time, so it is difficult to use the detected load value as is. There has been a problem in that the disturbance has an adverse effect on the responsiveness and stability of the control system, as well as on the sheet width accuracy.
本発明は前記問題を生ずる原因となる荷重外乱を補正し
て、ゲージメーター方式による板幅制御の応答性、安定
性を高め、板幅精度を向上させることを目的とする。An object of the present invention is to correct the load disturbance that causes the above-mentioned problems, improve the responsiveness and stability of sheet width control using a gauge meter method, and improve sheet width accuracy.
（問題点を解決するための手段）
このための本発明は、竪形圧延機と水平圧延機とを組合
せた圧延機による板圧延において、竪形圧延機における
圧延荷重とロール開度を用いて圧延機の板幅を推定し、
該推定板幅と目標板幅との偏差にもとづいて竪形圧延機
のロール開度を制御するゲージメーター方式による板幅
制御を行うにあたり、竪形圧延機と水平圧延機との間の
圧延材の張力を求め、該張力から竪形圧延機のハウジン
グとロールチョックとの間の摩擦力を算出し、該摩擦力
を用いて竪形圧延機における圧延荷重検出値を補正する
ことを特徴とするものである。(Means for Solving the Problems) To this end, the present invention utilizes the rolling load and roll opening degree of the vertical rolling mill in plate rolling by a rolling mill that combines a vertical rolling mill and a horizontal rolling mill. Estimate the strip width of the rolling mill,
In performing strip width control using a gauge meter method that controls the roll opening of the vertical rolling mill based on the deviation between the estimated strip width and the target strip width, the rolled material between the vertical rolling mill and the horizontal rolling mill is The method is characterized in that the tension is determined, the frictional force between the housing of the vertical rolling mill and the roll chock is calculated from the tension, and the detected rolling load value in the vertical rolling mill is corrected using the frictional force. It is.
（作用と実施例） 以下本発明を図示の実施例にもとづき詳しく説明する。(Actions and Examples) The present invention will be explained in detail below based on the illustrated embodiments.
第１図は本発明の実施例における制御系の基本構成を示
す図であり、第２図と同じ装置には同じ符号を付しであ
る０図に示すように竪形圧延機の竪ロール２と水平圧延
機の水平ロール３に同時に圧延材１が噛込んでいるとき
、竪形ロール２と水平ロール３との間にある圧延材１に
は張力が発生する。FIG. 1 is a diagram showing the basic configuration of a control system in an embodiment of the present invention, and the same devices as in FIG. 2 are given the same reference numerals. As shown in FIG. When the rolled material 1 is simultaneously bitten by the horizontal rolls 3 of the horizontal rolling mill, tension is generated in the rolled material 1 between the vertical rolls 2 and the horizontal rolls 3.
張力が発生すると竪ロール２が開閉移動する際に竪形圧
延機のハウジングとロールチョックとの間に摩擦力が発
生する。摩擦力が発生すると正確な圧延反力が荷重計４
に伝わらず、荷重検出値に誤差が住じ、従ってゲージメ
ーター式による板幅の推定の精度が低下する。そこで本
発明では、摩擦力にもとづき荷重検出誤差を除くために
つぎのようにして荷重検出値を補正する。まず、再圧延
機間の張力を求める。この張力の求め方は公知の方法、
たとえば竪ロール駆動電動機１１と水平ロール駆動電動
機１２の電流値を用いて張力を算出する下式
％式％（１）
：
Ｉｎ＝水平ロール駆動電動機電流
■ｒ：竪ロール駆動電動機電流
Ｈ：圧延材厚み Ｗ：圧延材幅
Ｑ：塑性係数（温度条件など含む）
を用いるなどして求める。When tension is generated, frictional force is generated between the housing of the vertical rolling mill and the roll chock when the vertical rolls 2 open and close. When frictional force is generated, accurate rolling reaction force is measured by load cell 4.
This results in an error in the detected load value, which reduces the accuracy of plate width estimation using the gauge meter method. Therefore, in the present invention, the load detection value is corrected as follows in order to eliminate the load detection error based on the frictional force. First, the tension between the re-rolling mills is determined. This tension can be determined using a known method.
For example, the tension is calculated using the current values of the vertical roll drive motor 11 and the horizontal roll drive motor 12 using the following formula % formula % (1): In=Horizontal roll drive motor current ■r: Vertical roll drive motor current H: Rolled material Thickness W: Width of rolled material Q: Determined using plasticity coefficient (including temperature conditions, etc.).
この張力Ｆｐから、竪形圧延機のハウジングとロールチ
ヨックとの間の摩擦力ＦＨが下式から求まる。From this tension Fp, the frictional force FH between the housing of the vertical rolling mill and the roll chock is determined from the following formula.
ＦＨ子ｐ’ｐＸμ ・・・・・・
（２）μ：ハウジングとロールチョックとの
摩擦係数
つぎに摩擦力ＦＨを補正量として荷重計４で検出した圧
延荷重検出値Ｆを下式により補正して張力に起因する外
乱を除去した修正圧延荷重値ＦＲを得る。FH child p'pXμ ・・・・・・
(2) μ: coefficient of friction between the housing and roll chock Next, using the friction force FH as a correction amount, the rolling load detection value F detected by the load cell 4 is corrected using the following formula to remove disturbances caused by tension. Corrected rolling load Get the value FR.
ＰＲ−ＦｆＦ、 ・・・・・・
（３）ここで（３）式右辺の符号は竪ロールが開方向に
移動しているときは（＋）、閉方向に移動しているとき
は（−）とし、竪ロールの開閉移動がないときはＦＭ＝
０とする。第１図において、１０は前記（１）式、（２
）式から摩擦力Ｆ、を算出する演算器であり、９は位置
検出器５の出力から前記（３）式右辺の符号の正負を判
定する符号判定器である。符号判定器９は荷重計４の検
出荷重値が増大する方向にあるときは（＋）と判定し、
検出荷重が減少する方向のときは（−）と判定したうえ
で、演算器ｌＯで算出した摩擦力ＦＨを荷重計４からの
荷重検出値Ｆに加えて演算器６に入力する。かくして演
算Ｂ６では整形圧延機と水平圧延機との間の圧延材に発
生する張力に起因する荷重検出誤差を除いたところのロ
ックオン荷重と時々刻々の圧延荷重との偏差が算出され
ることになる。PR-FfF, ・・・・・・
(3) Here, the sign on the right side of equation (3) is (+) when the vertical roll is moving in the opening direction, and (-) when it is moving in the closing direction, and there is no opening/closing movement of the vertical roll. Time is FM=
Set to 0. In FIG. 1, 10 is the above formula (1), (2
), and 9 is a sign determining device that determines whether the sign of the right side of the equation (3) is positive or negative from the output of the position detector 5. The sign determiner 9 determines (+) when the detected load value of the load cell 4 is in the increasing direction,
When the detected load is in the decreasing direction, it is determined as (-), and the friction force FH calculated by the calculator 1O is added to the load detection value F from the load meter 4 and input to the calculator 6. Thus, calculation B6 calculates the deviation between the lock-on load and the momentary rolling load after removing the load detection error caused by the tension generated in the rolled material between the shaping rolling mill and the horizontal rolling mill. Become.
（発明の効果）
以上述べたように本発明は、ゲージメーター方式による
板幅制御において、圧延材の張力に起因する荷重検出誤
差を除いた圧延荷重を用いるようにしたので、これによ
り従来の制御方法に比し制御の応答性、安定性の向上が
図られ、板幅制御精度を大幅に向上することができると
いう優れた効果がある。(Effects of the Invention) As described above, the present invention uses a rolling load that excludes the load detection error caused by the tension of the rolled material in strip width control using a gauge meter method. Compared to the conventional method, control responsiveness and stability are improved, and the plate width control accuracy can be significantly improved, which is an excellent effect.
第１図は本発明の実施例における￥ｆ！御系の基本構成
を示す図、第２図は従来のゲージメータ−板幅制御にお
ける制御系の基本構成を示す図である。
工：圧延材 ２：竪ロール ３；水平ロール４：ｒｉｌ
ｌ）５：位置検出器 ６：２ｉＩ算器 ７：演算器 ８
：制御装置 ９：符号判定器 １０：演算器FIG. 1 shows ¥f! in an embodiment of the present invention. FIG. 2 is a diagram showing the basic configuration of a control system in conventional gauge meter plate width control. Work: Rolled material 2: Vertical roll 3; Horizontal roll 4: ril
l) 5: Position detector 6: 2iI calculator 7: Arithmetic unit 8
: Control device 9: Sign determiner 10: Arithmetic unit
Claims (1)
延において、竪形圧延機における圧延荷重とロール開度
を用いて圧延機の板幅を推定し、該推定板幅と目標板幅
との偏差にもとづいて竪形圧延機のロール開度を制御す
るゲージメーター方式による板幅制御を行うにあたり、
竪形圧延機と水平圧延機との間の圧延材の張力を求め、
該張力から竪形圧延機のハウジングとロールチョックと
の間の摩擦力を算出し、該摩擦力を用いて竪形圧延機に
おける圧延荷重検出値を補正することを特徴とする板圧
延における板幅制御方法。In strip rolling using a rolling mill that combines a vertical rolling mill and a horizontal rolling mill, the strip width of the rolling mill is estimated using the rolling load and roll opening degree in the vertical rolling mill, and the estimated strip width and target strip width are calculated. When controlling strip width using a gauge meter method, which controls the roll opening of a vertical rolling mill based on the deviation from the
Find the tension of the rolled material between the vertical rolling mill and the horizontal rolling mill,
A plate width control in plate rolling, characterized in that a frictional force between a housing and a roll chock of a vertical rolling mill is calculated from the tension, and the detected rolling load value in the vertical rolling mill is corrected using the frictional force. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61311771A JPS63168210A (en) | 1986-12-27 | 1986-12-27 | Method for controlling width of sheet in sheet rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61311771A JPS63168210A (en) | 1986-12-27 | 1986-12-27 | Method for controlling width of sheet in sheet rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63168210A true JPS63168210A (en) | 1988-07-12 |
Family
ID=18021277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61311771A Pending JPS63168210A (en) | 1986-12-27 | 1986-12-27 | Method for controlling width of sheet in sheet rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63168210A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0430046A2 (en) * | 1989-11-29 | 1991-06-05 | Aeg Westinghouse Industrial Automation Corporation | A control system and method for compensation for speed effect in a tandem cold mill |
| US7918311B2 (en) | 2006-08-11 | 2011-04-05 | Toyota Jidosha Kabushiki Kaisha | Muffler and engine exhaust apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5994513A (en) * | 1982-11-19 | 1984-05-31 | Nippon Steel Corp | Method and equipment for controlling automatically sheet width |
| JPS6049809A (en) * | 1983-06-30 | 1985-03-19 | ゼネラル・エレクトリツク・カンパニイ | Method of compensating frictional force of rolling stand |
-
1986
- 1986-12-27 JP JP61311771A patent/JPS63168210A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5994513A (en) * | 1982-11-19 | 1984-05-31 | Nippon Steel Corp | Method and equipment for controlling automatically sheet width |
| JPS6049809A (en) * | 1983-06-30 | 1985-03-19 | ゼネラル・エレクトリツク・カンパニイ | Method of compensating frictional force of rolling stand |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0430046A2 (en) * | 1989-11-29 | 1991-06-05 | Aeg Westinghouse Industrial Automation Corporation | A control system and method for compensation for speed effect in a tandem cold mill |
| EP0430046A3 (en) * | 1989-11-29 | 1992-08-26 | Aeg Westinghouse Industrial Automation Corporation | A control system and method for compensation for speed effect in a tandem cold mill |
| US7918311B2 (en) | 2006-08-11 | 2011-04-05 | Toyota Jidosha Kabushiki Kaisha | Muffler and engine exhaust apparatus |
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