JPS58196112A - Controlling device of sheet thickness in rolling mill - Google Patents
Controlling device of sheet thickness in rolling millInfo
- Publication number
- JPS58196112A JPS58196112A JP57076639A JP7663982A JPS58196112A JP S58196112 A JPS58196112 A JP S58196112A JP 57076639 A JP57076639 A JP 57076639A JP 7663982 A JP7663982 A JP 7663982A JP S58196112 A JPS58196112 A JP S58196112A
- Authority
- JP
- Japan
- Prior art keywords
- plate thickness
- rolling
- sheet thickness
- roll gap
- rolling mill
- 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
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
- B21B37/24—Automatic variation of thickness according to a predetermined programme
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
(鳳) 技術分野の説明
本発明は鋼板等を圧延する圧延機において1本O圧嬌材
より2種類以上の板厚の異なる製品を連続的に圧延す為
板厚変更圧延に用いる圧延機の板厚制御装置に関する。[Detailed description of the invention] (Otori) Description of the technical field The present invention is designed to continuously roll two or more products with different thicknesses from a single O-rolled material in a rolling mill that rolls steel plates, etc. The present invention relates to a plate thickness control device for a rolling mill used for modified rolling.
−) 従来技術の説明
近年鋼板環を圧延する圧延機において、板厚を自動的に
変更し、1本の圧延材から2種類以上の板厚が異な為製
品を連続的に圧延する自動板厚変更圧電を行なうことに
より、多品種少量生産の製造ラインでの生産効率の飛躍
的向上が期待されている。-) Description of the prior art In recent years, rolling mills that roll steel plate rings have been developed to automatically change the plate thickness and continuously roll products with two or more different thicknesses from one rolled material. Modified piezoelectricity is expected to dramatically improve production efficiency on production lines for high-mix, low-volume production.
1%に、液化天然ガスLNGを貯蔵する球形のタンク等
に使用される鋼板は板厚が一様でなく、タンクの下部と
上部では内部圧力の相違から下部の板厚が厚い鋼板が要
請されている。1%, the thickness of steel plates used in spherical tanks for storing liquefied natural gas (LNG) is not uniform, and due to the difference in internal pressure between the lower and upper parts of the tank, a steel plate with a thicker plate at the bottom is required. ing.
板厚変更圧延の一例としてジングルスタンド熱間圧延機
においてフラットな板厚のスップから第1図に示す様な
テーパー状の板厚形状をもつ製品に圧延する場合を考え
る。As an example of sheet thickness changing rolling, consider the case where a product having a flat sheet thickness is rolled into a product having a tapered sheet thickness shape as shown in FIG. 1 in a jingle stand hot rolling mill.
この板厚変Vの圧延方法に対して、従来性なわれている
ものに82図および第3図に示す方法がある。Conventional rolling methods for this plate thickness variation V include the methods shown in FIGS. 82 and 3.
第2図に示す方法は、圧延材2の板厚変更前後(D a
−ルdfヤツプ設定値を、数式モデルを用いて予測計
算し、圧延中に圧延材2の変更位置が圧延ロールlの直
下を通過する際に、圧下位置制御装置3のロールギャッ
プ基準値gorefを、板厚変蔓前のロールギャップ設
定値から変更後のロールギャップ設定値にテーパ状に変
更し、圧下位置制御装置3により、圧延ロール10ロー
ルギヤツプを操作するととKより、板更変更する圧延方
法である。The method shown in FIG.
- Predictively calculate the roll df jump setting value using a mathematical model, and set the roll gap reference value goref of the rolling position control device 3 when the changing position of the rolled material 2 passes directly under the rolling roll l during rolling. , a rolling method in which the roll gap setting value before the sheet thickness change is tapered to the roll gap setting value after the change, and when the roll gap of the rolling roll 10 is operated by the rolling position control device 3, the sheet change is changed from K. It is.
この方法によって板厚変更する場合数式モデルを用いて
計算する圧延荷重、およびロールギャップの予測精度が
板厚精度九直接謬響することになる。When changing the plate thickness using this method, the accuracy of predicting the rolling load and roll gap calculated using a mathematical model will directly affect the accuracy of the plate thickness.
41に熱間圧延では板厚が一様でないため、板温の冷却
状態が異なり板温が一様となら危いため、材料の変形抵
抗の大きさを決定する材料の温度の予測が重要となpこ
の予測精度を上げるためには複雑な数式モデルの作成、
温度計による材料温度の正確な調定等が必要となり、多
大な経費と労力を要する。41. In hot rolling, the plate thickness is not uniform, so the cooling conditions for the plate temperature are different, and it is dangerous if the plate temperature is uniform. Therefore, it is important to predict the temperature of the material, which determines the magnitude of the material's deformation resistance. pIn order to increase the prediction accuracy, create a complex mathematical model,
Accurate adjustment of material temperature using a thermometer is required, which requires a great deal of expense and labor.
また、第3図の方法は板厚計からのフィードバック信号
を用いた自動板厚制御系を利用し九板厚変更圧延である
。この方法は圧延材2が圧延機に搬送され圧延ロールI
K噛み込み圧延機出側に設置した板厚計6に到達するま
では、自動板厚制御をOFFにして、板厚変厚前のロー
ルギャップ設定値で圧延を行ない、圧延材2が板厚計6
に到達後自動板厚制御がONになり板厚変更圧延が開始
されると圧延材2の変更位置の追跡が行なわれる。Further, the method shown in FIG. 3 is rolling with nine thickness changes using an automatic thickness control system using a feedback signal from a thickness gauge. In this method, a rolled material 2 is conveyed to a rolling mill and a rolling roll I
Until the plate thickness meter 6 installed on the exit side of the K-bit rolling machine is reached, the automatic plate thickness control is turned OFF and rolling is performed using the roll gap setting value before the plate thickness change, so that the rolled material 2 has a plate thickness. Total 6
After reaching , automatic plate thickness control is turned on and plate thickness change rolling is started, and the changed position of the rolled material 2 is tracked.
上記、追跡によって変更位置が圧延ロール1を通過する
と判断したならば、板厚変更前の目標板厚から変更後の
目標板厚に板厚基準horefをテーパ状に変更させて
自動板厚制御装置5および圧下位置制御装置3により、
板厚基準horefと板厚計より検出された実際の板厚
りとの偏差が減算器4にて零になるよう圧延ロール1の
ロールギャップを操作する板厚変更圧延である。If it is determined by the above tracking that the changed position passes through the rolling roll 1, the automatic plate thickness control device changes the plate thickness reference horef in a tapered shape from the target plate thickness before the plate thickness change to the target plate thickness after the change. 5 and the lowering position control device 3,
This is plate thickness changing rolling in which the roll gap of the rolling rolls 1 is manipulated so that the deviation between the plate thickness reference horef and the actual plate thickness detected by the plate thickness meter becomes zero at the subtractor 4.
しかし、この場合、板厚針6は圧延機から離れた位置に
あるため、板厚針6の検出応答遅れが生じる。However, in this case, since the plate thickness needle 6 is located away from the rolling mill, there is a delay in the detection response of the plate thickness needle 6.
従って、第3図の方法で版厚変更圧延を行なう場合には
、板厚計6の検出応答遅れを考慮して圧延を行なわない
と板厚精度の良い製品を圧延すみことはできない。Therefore, when performing plate thickness changing rolling using the method shown in FIG. 3, a product with good plate thickness accuracy cannot be rolled unless the delay in detection response of the plate thickness meter 6 is taken into consideration.
(C) 発明の目的
本発明は、上記事情に鑑み表されたもので、圧延材の材
質、硬度およびパススケジュール、圧延機の潤滑状n勢
を考慮しなくても、圧延材の板厚変更圧延が良い圧延機
の板厚制御装置を提供することを目的とする。(C) Purpose of the Invention The present invention was developed in view of the above circumstances, and it is possible to change the thickness of a rolled material without considering the material, hardness, pass schedule, or lubrication condition of the rolling mill. The object of the present invention is to provide a plate thickness control device for a rolling mill that allows for good rolling.
(d) 発明の構成
本発明は、テーパ状の板厚基準を油圧圧下制御装置に与
えるとともに、ロールギャップ検出値と圧延荷重検出値
を用いて演算したゲージメータ板厚をフィードバック信
号とする自動板厚制御装置(以下AGC)の板厚基準を
変更子ることにより出側板厚を修正するものである。(d) Structure of the Invention The present invention provides an automatic plate that provides a tapered plate thickness standard to a hydraulic reduction control device and uses a gauge meter plate thickness calculated using a roll gap detection value and a rolling load detection value as a feedback signal. The exit side plate thickness is corrected by changing the plate thickness standard of the thickness control device (hereinafter referred to as AGC).
第4図は油圧圧下制御装置を備えた圧延機に対して本発
明を適用した場合のブロック図であり、前記AGC装置
の出力によりロールギャップを操作し出側板厚を修正す
る例である。FIG. 4 is a block diagram when the present invention is applied to a rolling mill equipped with a hydraulic reduction control device, and is an example in which the output side plate thickness is corrected by operating the roll gap using the output of the AGC device.
以下、第4図を用いて本発明の詳細な説明する。Hereinafter, the present invention will be explained in detail using FIG. 4.
第4図において、lOは圧延材の材料長さ4を入力、出
側板厚基準hrefを出力とする関数発生器、11け正
画先端すなわち1=OKおける板厚基準href(Q)
を記憶する記憶回路、12は変換定数Ki、13は積分
ゲインに3の積分器、14は油圧圧下制御装置、15は
サーボアンプの伝達関数で4ゲイン、’rvは時定数を
表わす。In Fig. 4, lO is a function generator that inputs the material length 4 of the rolled material and outputs the exit side plate thickness reference href, and the plate thickness reference href (Q) where 11 digits are correct, that is, 1 = OK.
12 is a conversion constant Ki, 13 is an integrator with an integral gain of 3, 14 is a hydraulic pressure reduction control device, 15 is a transfer function of a servo amplifier with a gain of 4, and 'rv is a time constant.
又16はシリンダーの伝達関数で狗は1/(シリンダー
断面積)を表わす。17はロールギャップから圧延荷重
までの伝達関数で、Mはミル定数mは圧延材の塑性係数
である。18は圧延荷重によるミルの伸びを演算するブ
ロックであ石。16 is the transfer function of the cylinder, and 16 represents 1/(cross-sectional area of the cylinder). 17 is a transfer function from the roll gap to the rolling load, M is a mill constant, and m is the plasticity coefficient of the rolled material. 18 is a block that calculates the elongation of the mill due to rolling load.
図中のhgはゲージメータ板厚であり=(1)式で算出
される。hg in the figure is the gauge meter plate thickness, and is calculated by the formula (1).
但し、SO:無負荷時のギヤツブ設定値ΔSO:ギャッ
プ変化量
P :咬み込み直後の圧延荷重
ΔP:Pからの圧延荷重変化量
である。However, SO: gear setting value at no load ΔSO: gap change amount P: rolling load immediately after biting ΔP: rolling load change amount from P.
(1)式に明らかな如くロールギャップおよび圧延荷重
の検出とミル定数Mの予測を正確に行なうことにより出
側板厚は精度よく検出することができ今日の技術からす
れば容sK行なえる。As is clear from equation (1), by accurately detecting the roll gap and rolling load and predicting the mill constant M, the exit plate thickness can be detected with high accuracy, which is possible with today's technology.
いま、関数発生器10に図示されているように出側板厚
をテーパ状に変更する場合、関数発生器lOは圧延材長
手方向位置に応じて出側板厚基準href(1)を”出
力する。When changing the outlet side plate thickness into a tapered shape as shown in the function generator 10, the function generator IO outputs the outlet side plate thickness reference href(1) according to the longitudinal position of the rolled material.
記憶回路11は圧延材先端部の板厚基準hre員0)を
紀憶し、それ以後の板厚基準lの差すなわち、出側板厚
ブロック12には関数発生器の出力href(1)と記
憶回路11に記憶された圧延材先端部の板厚基準hre
t(o)との差Δhref(J)が入力され。The memory circuit 11 memorizes the plate thickness reference hre (0) at the tip of the rolled material, and stores the subsequent difference in the plate thickness reference l, that is, the output href (1) of the function generator in the outlet side plate thickness block 12. The plate thickness standard hre of the tip of the rolled material stored in the circuit 11
The difference Δhref(J) from t(o) is input.
変換係数に1との積を油圧圧下制御装置14のギヤ゛ッ
グ基準として出力する。The product of the conversion coefficient and 1 is output as a gearing reference for the hydraulic pressure reduction control device 14.
圧延機のロールギャップが△So変わった時の出側板厚
の変化Δhは(2)式で表わされる。The change Δh in the outlet side plate thickness when the roll gap of the rolling mill changes ΔSo is expressed by equation (2).
Δh −−一Δ8o ・曲(2)M 十m
従って出側板厚に△bref(l沙板厚変化を与えるた
めに必要なロールギャップ変更量は(2)式よりで得ら
れ第4図において変換定数に1をM+m
K・=M−°曲゛(4)
と設定すればよいことになる。Δh −−−Δ8o ・Curve (2) M 10 m Therefore, the amount of change in the roll gap required to give a change in plate thickness to the outlet side plate thickness is obtained from equation (2) and converted in Fig. 4. It is sufficient to set 1 as a constant as M+m K·=M−°(4).
しかし、特に41!&間圧延にといては圧延材長手方向
の温f変化や入側板厚の変化があり、(4)式における
圧延材の塑性係数mを正確に求めることはむづかしい。But especially 41! During inter-rolling, there are changes in the temperature f in the longitudinal direction of the rolled material and changes in the thickness at the entrance side, so it is difficult to accurately determine the plasticity coefficient m of the rolled material in equation (4).
11に板厚変更量が大きい場合では板厚変更各点におけ
る塑性係数mが変化することも充分予測される。11, when the amount of plate thickness change is large, it is fully predicted that the plasticity coefficient m at each point of plate thickness change will change.
本発明はこのオープンループによる板厚変更方法にゲー
ジメータ板厚hgをフィードバック信号とするフィード
バックループを併設し、上記問題を解決している。The present invention solves the above problem by adding a feedback loop using the gauge meter plate thickness hg as a feedback signal to this open-loop plate thickness changing method.
すなわち、出側板厚基準href(j)とゲージメータ
板厚hgとの差を積分器13に入力し、積分器13の出
力をブロック12の出力に加算して油圧圧下制御装置1
4に与える。That is, the difference between the exit side plate thickness reference href (j) and the gauge meter plate thickness hg is input to the integrator 13, the output of the integrator 13 is added to the output of the block 12, and the hydraulic pressure reduction control device 1
Give to 4.
積分器13ii出側板厚基準href(1)とゲージメ
ータ板厚hgとの差が無くなるよりロールギャップを修
正するためI出側板厚は目標とする板厚に精度よく圧延
される。Since the difference between the integrator 13ii outlet side plate thickness reference href(1) and the gauge meter plate thickness hg is eliminated, the I outlet side plate thickness is accurately rolled to the target plate thickness in order to correct the roll gap.
以上述べた如く本発明はオープンループの予測制御とゲ
ージメータ板厚をフィードバック信号とするフィードバ
ック制御を併設した板厚制御装置の板厚基準を変更する
ことにより所望の出側板厚に圧延することを特徴とする
。As described above, the present invention makes it possible to roll a plate to a desired outlet thickness by changing the plate thickness standard of a plate thickness control device that is equipped with open-loop predictive control and feedback control using gauge meter plate thickness as a feedback signal. Features.
(61発明の作用 以下に第5図に示す本発明の一実施例を説明をする。(61 Effect of invention An embodiment of the present invention shown in FIG. 5 will be described below.
本発明は、鋼板等を所定の板厚にする圧延轡の板厚制御
装置において、圧延材長手方向位置に対応した圧延機の
鋼板勢の出側板厚目標値を出力する板厚基準発生器Aと
、この板厚基準発生器の出力の変化at演算する板厚基
準変化量演算装置fBと、圧延機の圧延荷重及びロール
ギャップを検出し、これらの諸量からゲージメータ式に
よって圧延機の鋼板等の出側板厚を演算する板厚演算装
置Cと、この板厚演算装置Cの出力及び板厚基準発生器
Aの出力の差を積分し圧延機ロールギャップ修正量を算
出するロールギャップ演算装置りとを具備する。各板厚
基準発生器A、板厚基準変化量演算装置B、板厚演算装
置C及びロールギャップ演算装置りは次のような構成で
あり、作用する。The present invention provides a plate thickness reference generator A that outputs a target thickness of a steel plate on the exit side of a rolling mill corresponding to a position in the longitudinal direction of the rolled material in a plate thickness control device for a rolling bed that controls a steel plate or the like to a predetermined plate thickness. , a plate thickness standard change calculation device fB that calculates the change in the output of the plate thickness standard generator, detects the rolling load and roll gap of the rolling mill, and calculates the steel plate of the rolling mill using a gauge meter method from these various quantities. and a roll gap calculation device that calculates a rolling mill roll gap correction amount by integrating the difference between the output of the thickness calculation device C and the output of the thickness reference generator A. Equipped with rito. Each plate thickness reference generator A, plate thickness reference change amount calculation device B, plate thickness calculation device C, and roll gap calculation device are constructed and operated as follows.
圧延ロールlは電動機204Cより駆動され、電動機2
0は速度制御装置21により所定の回転速度に設定され
ている。父、一対の上下圧延ロールlのロールギャップ
は油圧圧下制御装置14にょ抄所定の値に設定されてい
る。The rolling roll l is driven by the electric motor 204C, and the electric motor 2
0 is set to a predetermined rotational speed by the speed control device 21. The roll gap between the pair of upper and lower rolling rolls 1 is set to a predetermined value by the hydraulic pressure reduction control device 14.
圧延材2が圧延ロールIK噛み込むと、圧延機に設置し
九荷重検出1!23より圧延荷重Pを、圧下位置検出器
24によ抄ロールギャップ80をそれすれ検出し、板厚
演算装置25に入力する。When the rolled material 2 is bitten by the rolling roll IK, the rolling load P is detected by the nine load detection 1!23 installed in the rolling mill, the roll gap 80 is detected by the rolling position detector 24, and the plate thickness calculating device 25 Enter.
板厚演算装置25は、ダージメータ式を用いてゲージメ
ータ板厚hgす愈わち実際の板厚を演算するものであり
、演算され九ゲージメータ板厚h1は本発明の板厚制御
装置のフィードバック信号として減算器26に出力され
る。The plate thickness calculating device 25 calculates the gauge meter plate thickness hg, that is, the actual plate thickness using a dirge meter type, and the calculated nine gauge meter plate thickness h1 is fed back to the plate thickness control device of the present invention. The signal is output to the subtracter 26 as a signal.
電動機20には速度検出器22が*り付けられ速度検出
器22の出力は関数発生器lOに送られる。関数発生器
10は速度検出器22の出力信号を用い、圧延材2の先
端からの長手方向位置Iを演算し、予め設定された圧延
材位置と出側板厚基準との関数から現圧延材位置に対応
した出側板厚基準href(j)を減算器26に出力す
す。A speed detector 22 is attached to the electric motor 20, and the output of the speed detector 22 is sent to a function generator IO. The function generator 10 uses the output signal of the speed detector 22 to calculate the longitudinal position I from the tip of the rolled material 2, and determines the current rolled material position from a function of the preset rolled material position and the exit side plate thickness reference. Output plate thickness reference href(j) corresponding to the output side plate thickness is outputted to the subtractor 26.
減算器26はhref(j)とhgとの差を演算し積分
器13に送り積分器13は減算器26が演算する板厚偏
差を零にすべくロールギャップ修正量を演算し加算器2
7に出力する。The subtracter 26 calculates the difference between href(j) and hg and sends it to the integrator 13. The integrator 13 calculates the roll gap correction amount in order to make the plate thickness deviation calculated by the subtracter 26 zero, and the adder 2
Output to 7.
一方圧延材2が圧延ロールlに咬み込み直後、瞬時ゲー
)3Gが閉路され圧延材先端部の出側板厚基準kr@f
(0)が記憶装置11に記憶される。即ち、先端部板厚
を初期値とする訳である。関数発生器10の出力は、経
路101を介して減算器28に入力され記憶装置11の
出力との差すなわち、出側板厚基準変更量が演算され掛
算器29に送られる。On the other hand, immediately after the rolled material 2 is bitten by the rolling roll l, the instantaneous gate 3G is closed, and the exit side plate thickness standard kr@f at the tip of the rolled material is
(0) is stored in the storage device 11. In other words, the tip plate thickness is taken as the initial value. The output of the function generator 10 is input to the subtracter 28 via a path 101, and the difference between it and the output of the storage device 11, that is, the amount of change in the outlet side plate thickness standard is calculated and sent to the multiplier 29.
掛算器29には設定器21に予め設定された変換定数に
1が入力され、減算器28との積を加算器27&C送る
。加算器27の出力は、油圧圧下制御装置ll14のギ
ャップ基準として入力され、圧延ロールlのロールギャ
ップが変更制御され出側板厚は所望の板厚に圧延される
。In the multiplier 29, 1 is inputted to the conversion constant set in advance in the setter 21, and the product with the subtracter 28 is sent to the adder 27&C. The output of the adder 27 is inputted as a gap reference to the hydraulic pressure reduction control device ll14, and the roll gap of the rolling roll 1 is changed and controlled so that the exit side plate thickness is rolled to a desired plate thickness.
(g) 11合的な効果
本発明の圧延機p板厚制御装置によれば、圧延材の材質
、硬度あるいは圧延スケジュール、潤滑状癲等を増産し
なくても板厚精度の良い製品を圧延することが〒きる。(g) 11 Combined Effects According to the rolling mill plate thickness control device of the present invention, products with good plate thickness accuracy can be rolled without increasing the production of the material, hardness, rolling schedule, lubrication, etc. of the rolled material. There are so many things to do.
′オた、本発明の板厚制御装置は、(1)式に表わすイ
ル定数M、ill性係数mを正確に予測する必要がない
九めに、簡単な回路構成にすることができ、さらに実際
の板厚を検、出す為のに圧延機に@置し九検出器より検
出し九圧延荷重およびロールギャップから板厚演算装置
を用いて板厚を演算するためK、圧延機に対しての検出
遅れがなく早い応答のフィードバック制御が行なえる。Furthermore, the plate thickness control device of the present invention can have a simple circuit configuration since it is not necessary to accurately predict the illumination constant M and the illumination coefficient m expressed in equation (1). In order to detect and output the actual plate thickness, it is placed on the rolling mill. There is no detection delay and feedback control with quick response can be performed.
従って、変更圧延時に板厚基準と実際の板厚との誤差が
生じても、板厚制御装置が速やかに動作して、ロールギ
ャップ修正を行なうことができるために、板厚精度の良
い製品を圧延することができ、多品種少量生産の製造ラ
インでの生産効果を大きく向上することができる。Therefore, even if an error occurs between the standard plate thickness and the actual plate thickness during rolling changes, the plate thickness control device operates quickly to correct the roll gap, allowing products with high plate thickness accuracy to be produced. It can be rolled, greatly improving production efficiency on production lines for high-mix, low-volume production.
特に、本発明は板厚をテーパー状の圧延をする場合に有
効である。In particular, the present invention is effective when rolling a sheet into a tapered shape.
第1図は圧延材製品の板厚パターン例を示す図、第2図
及び第3図は従来方法の説明図、第4図は本発明の機能
を示すブロック図、第S図は本発明の一実施例を示すブ
ロック図である。
1・・・・圧延ロール 2.・・・圧延材1・・
・・圧下制御装置 4・・0.減算器S・・・・ム
GC装置 6 、、、、板厚針10・・・関数発
生!! 11.、・記憶装置12・・・変換定
数設定器 13 、、、積分器14・・・油圧圧下制
御装置
15・・・ナーボアンプブロック
16・・・シリンダーブロック
17・・・ギャップ変化と圧延荷重変化の間の伝達関数
18・・・圧延荷重とミルの伸びの間の伝達関数20・
・・電動機 21・・・速度制御装置22・
・・速匿検出器 23・、・荷重検出器24・・
・圧下位置検出器 25・、・板厚演算装置26.2
8・・・減算! 27.・・加算器29・・
・掛算器 30川ゲート(7317)
代理人 弁理士 則 近 憲 佑 (itか1名)第1
図
?
第2図Fig. 1 is a diagram showing an example of a plate thickness pattern of a rolled material product, Figs. 2 and 3 are explanatory diagrams of the conventional method, Fig. 4 is a block diagram showing the functions of the present invention, and Fig. S is a diagram showing the function of the present invention. FIG. 2 is a block diagram showing one embodiment. 1... Rolling roll 2. ...Rolled material 1...
・・Down control device 4・・0. Subtractor S...Mu GC device 6,..., plate thickness needle 10...Function generation! ! 11. ,・Storage device 12...Conversion constant setter 13,...Integrator 14...Hydraulic reduction control device 15...Nervo amplifier block 16...Cylinder block 17...Gap change and rolling load change Transfer function 18 between...Transfer function 20 between rolling load and mill elongation
...Electric motor 21...Speed control device 22.
・・Fast detection detector 23・・・Load detector 24・・
・Reduction position detector 25・・・Plate thickness calculation device 26.2
8...Subtraction! 27. ...Adder 29...
・Multiplier 30 River Gate (7317)
Agent: Patent Attorney Kensuke Chika (IT or 1 person) 1st
figure? Figure 2
Claims (1)
て、圧延材長手方向位置に対応し九前記圧延機の鋼板等
の出側板厚目標値を出力する板厚基準発生器と、この板
厚基準発生器の出力の変化量を演算す為板厚基準変化量
演算装置と、前記圧延機の圧延荷重及びロールギャップ
を検出し、これらの諸量からゲージメータ弐によって前
記圧延機の鋼板等の出側板′厚を演算する板厚演算装置
とこの板厚演算装置の出力及び前記板厚基準発生器の出
力の差を積分し圧延機Q−ルギャップ修正量を算出する
ロールギャップ修正量演算装置とを具備し、前記板厚基
準変化量演算装置の出力を一一ルギャップ修正量に変換
した値に前記ロールギャップ修正量演算装置の出力を修
正量として加え1延様の鋼板等の出側板厚を所定の値に
圧延することを特徴とすゐ圧延機の板厚制御装置。A plate thickness control device for a rolling mill that adjusts a steel plate, etc. to a predetermined plate thickness includes: a plate thickness reference generator that outputs a target thickness of the steel plate, etc. on the exit side of the rolling mill, corresponding to the longitudinal position of the rolled material; In order to calculate the amount of change in the output of the plate thickness reference generator, a plate thickness reference change amount calculation device is used, and the rolling load and roll gap of the rolling mill are detected, and based on these quantities, the steel plate of the rolling mill is determined by the gauge meter 2. A roll gap correction amount calculation unit that calculates a rolling mill Q-le gap correction amount by integrating the difference between the output of this plate thickness calculation device and the output of the plate thickness reference generator. and adding the output of the roll gap correction amount calculation device as a correction amount to the value obtained by converting the output of the sheet thickness standard change amount calculation device into a roll gap correction amount to produce an exit side plate such as a steel plate of one roll type A plate thickness control device for a rolling mill, which is characterized by rolling the plate thickness to a predetermined value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57076639A JPS58196112A (en) | 1982-05-10 | 1982-05-10 | Controlling device of sheet thickness in rolling mill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57076639A JPS58196112A (en) | 1982-05-10 | 1982-05-10 | Controlling device of sheet thickness in rolling mill |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58196112A true JPS58196112A (en) | 1983-11-15 |
Family
ID=13610944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57076639A Pending JPS58196112A (en) | 1982-05-10 | 1982-05-10 | Controlling device of sheet thickness in rolling mill |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58196112A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106273999A (en) * | 2016-08-10 | 2017-01-04 | 浙江森虎机械有限公司 | Corrugated paper machine with automatic pressure mechanism |
-
1982
- 1982-05-10 JP JP57076639A patent/JPS58196112A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106273999A (en) * | 2016-08-10 | 2017-01-04 | 浙江森虎机械有限公司 | Corrugated paper machine with automatic pressure mechanism |
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