JPH02211907A - Sheet thickness control method for continuous hot rolling mill - Google Patents

Sheet thickness control method for continuous hot rolling mill

Info

Publication number
JPH02211907A
JPH02211907A JP1031867A JP3186789A JPH02211907A JP H02211907 A JPH02211907 A JP H02211907A JP 1031867 A JP1031867 A JP 1031867A JP 3186789 A JP3186789 A JP 3186789A JP H02211907 A JPH02211907 A JP H02211907A
Authority
JP
Japan
Prior art keywords
plate thickness
thickness
stand
computing element
deviation
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
JP1031867A
Other languages
Japanese (ja)
Other versions
JPH0585249B2 (en
Inventor
Kazuyoshi Kimura
和喜 木村
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
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP1031867A priority Critical patent/JPH02211907A/en
Publication of JPH02211907A publication Critical patent/JPH02211907A/en
Publication of JPH0585249B2 publication Critical patent/JPH0585249B2/ja
Granted legal-status Critical Current

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
    • B21B37/165—Control of thickness, width, diameter or other transverse dimensions responsive mainly to the measured thickness of the product

Abstract

PURPOSE:To control sheet thicknesses with high accuracy by providing thickness gages and thermometers between rolling stands and correcting the roll gaps and roll circumferential speeds of downstream stands by using the measured sheet thicknesses and material temps. CONSTITUTION:The actually measured values of the sheet thickness and material temp. are detected by the thickness gage 5 and the thermometer 6 at the point of the time when a material 1 to be rolled arrives at the outlet side of the 4th stand 2d. The actually measured value of the thickness is inputted to a thickness deviation computing element 8 and the actually measured value of the material temp. is inputted to a computing element 7. The computing element 7 calculates a temp. deviation and inputs it to the thickness deviation computing element 8. The computing element 8 calculates the thickness deviation between the target thickness value and actually measured thickness on the outlet side of the 4th stand 2d and further calculates the thickness deviation on the outlet side of the 5th stand 2e by these values and the predicted value of the material temp. inputted from the computing element 7. The thickness deviation is inputted to a roll gap correction rate computing element 9 which calculates the reduction correction rates of the stands 2f, 2g. The correction rates of the circumferential speeds are determined by a roll circumferential speed computing element 10 from the actually measured values of the thickness deviation the thickness deviation calculated by the computing element 8 and the rotating speeds of driving motors 4e to 4g are thereby corrected.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明方法は鋼板等の被圧延材を熱間仕上げミル等の熱
間連続圧延機にて圧延する場合の板厚制御方法に関する
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The method of the present invention relates to a method for controlling the thickness of a rolled material such as a steel plate in a continuous hot rolling mill such as a hot finishing mill.

〔従来の技術〕[Conventional technology]

従来圧延スタンドを連続して配置した熱間連続圧延機を
用いて被圧延材を圧延する場合、被圧延材の板厚を制御
する方法として、予め各スタンドのロールギャップおよ
びロール周速度を設定することにより最終スタンド出側
にて目標の板厚を得る方法が用いられている。Conventionally, when rolling a material using a continuous hot rolling mill in which rolling stands are arranged in series, the roll gap and roll circumferential speed of each stand are set in advance as a way to control the thickness of the material to be rolled. A method is used in which the target thickness is obtained at the exit side of the final stand.

例えば７スタンドからなる熱間仕上げ圧延機における各
スタンドのロールギャップおよびロール周速度は以下の
如く設定される。まず、図示しない粗圧延機出側に設け
られた厚み計にて実測された仕上圧延機入側板厚ｈａ（
ｍｍ）と仕上圧延機最終スタンド出側目標板厚ｈｔ（ｎ
＋ｍ）とから各スタンド出側の板厚目標値ｈ＋（ｍｍ）
を決定し、粗圧延機出側（仕上げ圧延機入側）の温度実
測埴に基づいて仕上げ圧延機各スタンド出側における材
料温度Ｔ、（Ｋ）を予測する。この板厚目標値ｈ　Ｉ及
び材料温度予測値ＴＩに基づき各スタンドの圧延荷重予
測値Ｐ　＋　（ｔｏｎ）を下記式（１）にて算出する。For example, in a hot finishing rolling mill consisting of seven stands, the roll gap and roll circumferential speed of each stand are set as follows. First, the plate thickness ha(
mm) and target plate thickness ht(n
+m) and the plate thickness target value h+(mm) on the exit side of each stand.
is determined, and the material temperature T, (K) at the exit side of each stand of the finishing rolling mill is predicted based on the actual temperature measurement on the exiting side of the rough rolling mill (input side of the finishing rolling mill). Based on this plate thickness target value h I and material temperature predicted value TI, a predicted rolling load value P + (ton) for each stand is calculated using the following formula (1).

Ｐ＋＝Ｋｒ□　・　ｂム゛Ｊｎｚ　（ｈｔ−＋　　−ｈ
ｉ　　）Ｑ□（ｉ＝ｌ、　　・・・、　７）　　・・・
（１）但し、Ｋ　ｆ＋＊ｉ　　：平均変形抵抗（ｋｇ／
ｍｍ２）ｂ、：板幅（１１） Ｒ正　：偏平ロール半径（鳳ｌ） ｈ、：スタンド出側板厚目標値（重層）ＱＰｉ：圧下力
関数 （添字ｉはｉ番目のスタンドを示す。以下同じ）また、
（１１式におけるＫ　、、、は下記式（２）に示す如き
関数で示される。P+=Kr□ ・ bmu゛Jnz (ht-+ -h
i)Q□(i=l, ..., 7) ...
(1) However, K f + *i: Average deformation resistance (kg/
mm2) b,: Plate width (11) R positive: Flat roll radius (Hori) h,: Stand exit side plate thickness target value (multilayer) QPi: Rolling force function (Subscript i indicates the i-th stand. The same applies below) )Also,
(K in Equation 11 is expressed by a function as shown in Equation (2) below.

（ｉ＝１　　　・・・、　７）・・・（２）：材料温度
予測値（Ｋ） ；歪 ：歪速度（１／５ｅｃ） Ａ、Ｂ：圧延材の鋼種により決まる 定数 ｍ、ｎ：定数 下記式（１１，（２１により予測した圧延荷重予測値Ｐ
。(i=1..., 7)...(2): Predicted material temperature value (K); Strain: Strain rate (1/5ec) A, B: Constants determined by the steel type of the rolled material m, n: Constants The rolling load predicted value P predicted by the following formula (11, (21)
.

より次式（３）でロールギャップＳ；　（ｍｍ）を算出
する。From this, the roll gap S; (mm) is calculated using the following equation (3).

Ｓｉ　　”’ｈｔ　　　ＰＩ　／Ｍｉ　　　　（ｉ＝１
．　　・・・、７）但し、Ｍｌ　：ミル剛性係数（ｔｏ
ｎ／ｍｍ）次に各スタンドの先進率ｆ、および最終スタ
ンド（第７スタンド）のロール周速度Ｖ　？　（ｍ／ｍ
１ｎ）より、次式（４）にてロール周速度Ｖ　ｒ　（ｍ
／ｍ１ｎ）を設定する。Si ”'ht PI /Mi (i=1
．． ..., 7) However, Ml: Mill stiffness coefficient (to
n/mm) Next, the advance rate f of each stand and the roll circumferential speed V of the final stand (7th stand)? (m/m
1n), the roll peripheral speed V r (m
/m1n).

Ｖ＋　＝　（Ｎ＋ｒ７）　ｈ７Ｖ？　ｌ／（Ｎ＋ｒ、　
）・・・（４） 〔発明が解決しようとする課題〕 上述したような板厚制御方法においては被圧延材が仕上
げ圧延機に噛み込む前に、仕上げ圧延機の各スタンド出
側にて板厚目標値り、を得るべく、各スタンドのロール
ギャップおよびロール周速度を演算し、設定する。とこ
ろが荷重予測式（１）および平均変形抵抗予測式（２）
の誤差により、ロールギャップおよびロール周速度の計
算値の誤差が生じ易い。また粗圧延機出側における材料
温度測定誤差があると、これに基づき算出される各スタ
ンドのロールギャップＳ、にも誤差が生じ、被圧延材先
端部における板厚精度が悪くなるという問題が・・・（
３） ある。V+ = (N+r7) h7V? l/(N+r,
)...(4) [Problems to be Solved by the Invention] In the plate thickness control method as described above, before the material to be rolled is bitten by the finishing mill, the plate thickness is In order to obtain the target thickness value, the roll gap and roll circumferential speed of each stand are calculated and set. However, the load prediction formula (1) and the average deformation resistance prediction formula (2)
This error tends to cause errors in the calculated values of the roll gap and roll circumferential speed. In addition, if there is an error in the material temperature measurement at the exit side of the rough rolling mill, there will also be an error in the roll gap S of each stand calculated based on this, resulting in the problem of poor plate thickness accuracy at the tip of the rolled material.・・・(
3) Yes.

本発明は斯かる事情に鑑みなされたものであり、その目
的とするところは、熱間連続圧延機の圧延スタンド間の
少なくとも一箇所に厚み計及び温度計を設け、これによ
り測定した板厚及び材料温度を用いて下流スタンドのロ
ールギャップ及びロール周速度を修正し、高精度に板厚
を制御するにある。The present invention has been made in view of the above circumstances, and its purpose is to provide a thickness gauge and a thermometer at at least one location between the rolling stands of a continuous hot rolling mill, and to measure the plate thickness and temperature using the thickness gauge and thermometer. The goal is to use material temperature to modify the roll gap and roll circumferential speed of the downstream stand to control plate thickness with high precision.

〔課題を解決するための手段〕[Means to solve the problem]

本発明に係る板厚制御方法は、複数の圧延スタンドを有
する熱間連続圧延機における板厚制御方法において、前
記スタンド間の少なくとも一箇所に板厚測定手段及び温
度測定手段を設け、該手段にて測定した板厚実測値及び
材料温度実測値と予め設定しておいた板厚目標値及び材
料温度予測値との偏差に基づき、前記板厚測定手段を設
けた箇所よりも下流にあるスタンドのロールギャップ及
びロール周速度を修正することを特徴とする。A plate thickness control method according to the present invention is a plate thickness control method in a continuous hot rolling mill having a plurality of rolling stands, in which a plate thickness measuring means and a temperature measuring means are provided at at least one location between the stands, Based on the deviation between the measured plate thickness and actual material temperature values and the preset target plate thickness value and predicted material temperature value, the It is characterized by correcting the roll gap and roll circumferential speed.

〔作用〕[Effect]

本発明に係る板厚制御方法にあっては、前記スタンド間
に設けられた板厚測定手段及び温度測定手段にて圧延材
の板厚及び材料温度が実測される。In the plate thickness control method according to the present invention, the plate thickness and material temperature of the rolled material are actually measured by the plate thickness measuring means and temperature measuring means provided between the stands.

これらの実測値と予め設定しておいた板厚目標値及び材
料温度予測値との偏差に基づき下流スタンドのロールギ
ャップ及びロール周速度が修正されるので、最終スタン
ド出側の板厚偏差が小さくなり、板厚精度が向上する。The roll gap and roll circumferential speed of the downstream stand are corrected based on the deviations between these measured values and the preset plate thickness target value and material temperature prediction value, so the plate thickness deviation at the exit side of the final stand is small. This improves plate thickness accuracy.

〔実施例〕〔Example〕

以下、本発明方法を図面に基づき具体的に説明する。 Hereinafter, the method of the present invention will be specifically explained based on the drawings.

第１図は本発明方法を適用した７スタンドからなる熱間
仕上げ圧延機の構成を示すブロック図である。図に示す
如く被圧延材１は図中白抜矢符で示される方向からスタ
ンド２ａ、　２ｂ、　２ｃ、　２ｄ、　２ｅ、　２ｆ　
、　２ｇを通って圧延される。第４スタンド２ｄと第５
スタンド２ｅとの間には夫々板厚偏差演算器８及び演算
器７ど接続した板厚計５及び温度計６が設けられており
、更に板厚偏差演算器８はロールギャップ演算器９とロ
ール周速度演算器１０とに接続している。FIG. 1 is a block diagram showing the configuration of a seven-stand hot finishing mill to which the method of the present invention is applied. As shown in the figure, the rolled material 1 is placed on stands 2a, 2b, 2c, 2d, 2e, 2f from the direction indicated by the white arrow in the figure.
, rolled through 2g. 4th stand 2d and 5th stand
A plate thickness gauge 5 and a thermometer 6 connected to a plate thickness deviation calculator 8 and a calculator 7, respectively, are provided between the stand 2e and the plate thickness deviation calculator 8 and a roll gap calculator 9. It is connected to the circumferential velocity calculator 10.

上述の構成を有する仕上げ圧延機における各スタンド２
ａ〜２ｇのロールギャップ及びロール周速度は、被圧延
材１が第１スタンド２ａに噛み込む前に、図示しない設
定演算器によ・り従来法と同様に式（１）〜（４）にて
各スタンドのロールギャップＳＬ及びロール周速度■ｉ
が設定される。Each stand 2 in the finishing rolling mill having the above-described configuration
The roll gap and roll circumferential speed of a to 2g are determined by equations (1) to (4) using a setting calculator (not shown) before the rolled material 1 is bitten into the first stand 2a, as in the conventional method. Roll gap SL and roll circumferential speed ■i of each stand
is set.

上述の如くロールギヤツブＳ直およびロール周速度■ム
が設定された圧延機に、被圧延材１が第１スタンド２ａ
から順次噛み込まれ、第４スタンド２ｄの出側に到達し
た時点で第４スタンド２ｄと第５スタンド２ｅとの間に
設けられた板厚計５及び温度計６により板厚実測値ｈＡ
Ｍ及び材料温度実測値ＴＡ。The material to be rolled 1 is placed on the first stand 2a in a rolling mill in which the roll gear S is set straight and the roll circumferential speed is set as described above.
The actual thickness hA is measured by the thickness gauge 5 and thermometer 6 provided between the fourth stand 2d and the fifth stand 2e.
M and material temperature actual value TA.

が検出され、板厚実測値ｈＡＭは板厚偏差演算器８に、
材料温度実測値Ｔ□は演算器７に入力される。is detected, and the actual plate thickness value hAM is sent to the plate thickness deviation calculator 8,
The actual material temperature value T□ is input to the calculator 7.

演算器７では上記温度計の設置された位置における材料
温度予測値Ｔ、４と材料温度実測値ＴＡＮとの温度偏差
ΔＴ、が算出され、板厚偏差演算器８に入力される。な
お、材料温度予測値Ｔ、は各スタンド出側の材料温度予
測値と同時に計算しておく。そして第４スタンド２ｄよ
りも下流スタンド、即ち第５〜第７スタンド２ｅ、２ｆ
　＋　２ｇの温度偏差は、前記ΔＴ、４に等しい。つま
り、式（５）が成り立つ。The calculator 7 calculates the temperature deviation ΔT between the predicted material temperature value T, 4 and the actual measured material temperature value TAN at the position where the thermometer is installed, and inputs it to the plate thickness deviation calculator 8. Note that the material temperature prediction value T is calculated simultaneously with the material temperature prediction value on the outlet side of each stand. And the stands downstream from the fourth stand 2d, that is, the fifth to seventh stands 2e and 2f.
A temperature deviation of + 2 g is equal to ΔT, 4. In other words, equation (5) holds true.

ΔＴ１＝ΔＴＭ　　（ｉ＝５．６．７）・・・（５）同
様にして板厚偏差演算器８では第４スタンド２ｄ出側の
板厚目標値ｈ４と板厚実測値ｈＡ４との板厚偏差Δｈ、
が算出される。さらに板厚偏差演算器８では第４スタン
ド２ｄ出側の板厚偏差Δｈ４と演算器７から入力された
６７Ｍとにより下記式（６）にて第５スタンド２ｅ出側
の板厚偏差Δｈ、が計算される。ΔT1=ΔTM (i=5.6.7) (5) Similarly, the plate thickness deviation calculator 8 calculates the plate thickness between the plate thickness target value h4 and the plate thickness actual measurement value hA4 on the exit side of the fourth stand 2d. Deviation Δh,
is calculated. Furthermore, the plate thickness deviation calculator 8 calculates the plate thickness deviation Δh on the outlet side of the fifth stand 2e using the following equation (6) using the plate thickness deviation Δh4 on the outlet side of the fourth stand 2d and 67M input from the calculator 7. Calculated.

まず第５スタンドにおける荷重Ｐ！、入側板厚ｈ４．出
側板厚り、及び材料温度Ｔ、の関係は式％式％ また第５スタンド２ｅの入側で板厚、温度を測定した後
、第５スタンドのロールギャップを修正するのは時間的
に困難なため、第５スタンドにおいてはロールギャップ
の修正は行わないものとすると、ゲージメータ式から次
式（７）が得られる。First, the load P on the fifth stand! , entry side plate thickness h4. The relationship between the exit plate thickness and material temperature T is expressed by the formula %.Also, it is difficult to correct the roll gap of the 5th stand after measuring the plate thickness and temperature on the entry side of the 5th stand 2e. Therefore, assuming that the roll gap is not corrected in the fifth stand, the following equation (7) can be obtained from the gauge meter equation.

Δｈ、＝ΔＰ、／Ｍ％　　　　・・・（７）上記（６）
、　（７）式よりΔｈ５は以下のように示される。Δh,=ΔP,/M%...(7) Above (6)
, From equation (7), Δh5 is shown as follows.

人力され、これにより第６スタンド及び第７スタンド２
ｆ　、　２ｇの圧下修正量ΔＳ６．ΔＳ、が算出される
。As a result, the 6th and 7th stands 2
f, 2g reduction correction amount ΔS6. ΔS is calculated.

圧下修正量ΔＳｈ、ΔＳ、は、第７スタンド２ｇ出側、
即ち最終スタンド出側にて板厚偏差Δｈ。The reduction correction amount ΔSh, ΔS is the 7th stand 2g exit side,
That is, the plate thickness deviation Δh at the exit side of the final stand.

が０になるよう定められる。即ち、第６スタンド２ｆ及
び第７スタンド２ｇ出側の板厚偏差を次式（９）。is set to be 0. That is, the plate thickness deviation on the exit side of the sixth stand 2f and the seventh stand 2g is expressed by the following equation (9).

ａωになるようにΔＳ６＋　ΔＳｙを決めるのである。ΔS6+ΔSy is determined so that aω.

Δｈｂ　＝’ＡΔｈ、　　　・・・（９）Δｈｖ＝ｏ　
　　　　　　・・・００）第５スタンド（ｉ＝６．７）
において荷重Ｐ。Δhb ='AΔh, ... (9) Δhv=o
...00) 5th stand (i=6.7)
Load P at.

出側板厚り及び温度Ｔの間には次式（１１）の関係が成
・・・（８） 板厚偏差演算器８にて上述の如く算出された板厚偏差Δ
ｈ５はロールギャップ修正量演算器９にまたゲージメー
タ式より （ＩＩ）、　０２）式より下記式〇３）によりΔＳ６．
ΔＳ７が算出される。The following equation (11) is established between the exit side plate thickness and the temperature T...(8) The plate thickness deviation Δ calculated as described above by the plate thickness deviation calculator 8
h5 is determined by the roll gap correction amount calculator 9 and from the gauge meter formula (II), and from the formula 02) by the following formula 03), ΔS6.
ΔS7 is calculated.

ロールギャップ演算器９にて算出されたΔＳ６゜ΔＳ１
に基づき、被圧延材ｌが第６スタンド２ｆに噛み込む前
にスタンド２ｆ、２ｇの圧下袋Ｒ３ｆ、３ｇのロールギ
ャップ量の修正を行う。ΔS6°ΔS1 calculated by roll gap calculator 9
Based on this, the roll gap amount of the roll bag R3f of the stands 2f and 2g and the roll gap of 3g is corrected before the rolled material l is bitten by the sixth stand 2f.

また、第４スタンド２ｄ出側にて実測された板厚偏差実
測値Δｈ４及び板厚偏差演算器８にて算出された板厚偏
差Δｈ＋　　（ｉ＝５．６）はロール周速度演算器１０
に入力され、これによりスタンド２ｆ。In addition, the plate thickness deviation actual value Δh4 actually measured at the exit side of the fourth stand 2d and the plate thickness deviation Δh+ (i=5.6) calculated by the plate thickness deviation calculator 8 are calculated by the roll circumferential speed calculator 10.
This causes stand 2f.

２ｇのロールギャップの修正に伴うマスフロー変化を防
ぐべく下記式のように各スタンドのロール周速度修正量
ΔＶ＋　　（ｉ＝５．６．７）が決定される。In order to prevent the mass flow change due to the correction of the roll gap of 2g, the roll circumferential speed correction amount ΔV+ (i=5.6.7) of each stand is determined as shown in the following formula.

上記ロール周速度修正量ΔＶｉに基づいて、各スタンド
２ｅ〜２ｇのワークロールを駆動する駆動上−タ４ｅ〜
４ｇの回転数の修正を行う。Based on the roll circumferential speed correction amount ΔVi, the drive rollers 4e to 4e drive the work rolls of each stand 2e to 2g.
Correct the rotation speed of 4g.

第２図及び第３図は夫々本発明及び従来方法により板幅
８００ｍｍ　〜１３００ｍｍ、板厚２ｍｌ１１〜６ｍｌ
ｌ１の鋼板８０本を圧延した場合の圧延材先端部の板厚
偏差Δｈ１を示すグラフであり、両図とも縦軸には先端
部板厚偏差（μｍ）、横軸には圧延材本数がとられてい
る。図より明らかな如く本発明方法の板厚制御方法によ
ると、従来の方法に比べて圧延材先端部の板厚偏差がＯ
に近くなり、バラツキも少なく、板厚精度が大幅に向上
する。Figures 2 and 3 show plate widths of 800 mm to 1300 mm and plate thicknesses of 2 ml and 11 to 6 ml, respectively, according to the present invention and the conventional method.
This is a graph showing the plate thickness deviation Δh1 at the tip of the rolled material when 80 steel plates of l1 are rolled, and in both figures, the vertical axis shows the plate thickness deviation (μm) at the tip, and the horizontal axis shows the number of rolled plates. It is being As is clear from the figure, according to the plate thickness control method of the present invention, the plate thickness deviation at the tip of the rolled material is reduced compared to the conventional method.
, with less variation and greatly improved plate thickness accuracy.

〔効果〕〔effect〕

以上詳述した如く、本発明に係る板厚制御方法において
は、熱間連続圧延機のスタンド間に板厚測定手段及び温
度測定手段を設け、該手段にて実測される圧延材の板厚
及び温度を用いて下流スタンドのロールギャップ及びロ
ール周速度を修正する。これにより最終スタンド出側の
板厚偏差が小さくなり、バラツキも減少し、板厚精度が
大幅に向上するという優れた効果を奏する。As detailed above, in the plate thickness control method according to the present invention, plate thickness measuring means and temperature measuring means are provided between the stands of a continuous hot rolling mill, and the plate thickness and temperature of the rolled material are measured by the means. Temperature is used to modify the roll gap and roll peripheral speed of the downstream stand. This has the excellent effect of reducing the plate thickness deviation on the exit side of the final stand, reducing variations, and greatly improving plate thickness accuracy.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明方法を実施するための熱間仕上げ圧延機
の構成を示すブロック図、第２図は従来方法の板厚制御
方法による圧延材先端部の板厚偏差の計算値を示すグラ
フ、第３図は本発明方法の板厚制御方法による圧延材先
端部の板厚偏差の計算値を示すグラフである。 ■・・・圧延材　２ａ、２ｂ、２ｃ、２ｄ、２ｅ、２ｆ
、２ｒ・・スタンド５・・・厚み計　６・・・温度計　
８・・・板厚偏差演算器９・・・圧下修正量演算器　１
０・・・ロール周速度演算器時　許　出願人　　住友金
属工業株式会社代理人　弁理士　　河　　野　　登　　
夫図Fig. 1 is a block diagram showing the configuration of a hot finishing rolling mill for carrying out the method of the present invention, and Fig. 2 is a graph showing the calculated value of the plate thickness deviation at the tip of the rolled material using the conventional plate thickness control method. , FIG. 3 is a graph showing the calculated value of the plate thickness deviation at the tip of the rolled material by the plate thickness control method of the present invention. ■・・・Rolled material 2a, 2b, 2c, 2d, 2e, 2f
, 2r...Stand 5...Thickness gauge 6...Thermometer
8... Plate thickness deviation calculator 9... Rolling correction amount calculator 1
0...Roll circumferential speed calculator time Applicant Sumitomo Metal Industries Co., Ltd. Agent Patent attorney Noboru Kono
Husband figure

Claims (1)

【特許請求の範囲】 １、複数の圧延スタンドを有する熱間連続圧延機におけ
る板厚制御方法において、 前記スタンド間の少なくとも一箇所に板厚 測定手段及び温度測定手段を設け、該手段にて測定した
板厚実測値及び材料温度実測値と予め設定しておいた板
厚目標値及び材料温度予測値との偏差に基づき、前記板
厚測定手段を設けた箇所よりも下流にあるスタンドのロ
ールギャップ及びロール周速度を修正することを特徴と
する板厚制御方法。[Claims] 1. In a method for controlling plate thickness in a continuous hot rolling mill having a plurality of rolling stands, a plate thickness measuring means and a temperature measuring means are provided at least at one location between the stands, and the measuring means is used to measure the thickness. Based on the deviation between the measured plate thickness and actual material temperature values and the preset target plate thickness value and predicted material temperature value, the roll gap of the stand located downstream of the location where the plate thickness measuring means is installed is determined. and a plate thickness control method characterized by modifying the peripheral speed of the roll.
JP1031867A 1989-02-09 1989-02-09 Sheet thickness control method for continuous hot rolling mill Granted JPH02211907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1031867A JPH02211907A (en) 1989-02-09 1989-02-09 Sheet thickness control method for continuous hot rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1031867A JPH02211907A (en) 1989-02-09 1989-02-09 Sheet thickness control method for continuous hot rolling mill

Publications (2)

Publication Number Publication Date
JPH02211907A true JPH02211907A (en) 1990-08-23
JPH0585249B2 JPH0585249B2 (en) 1993-12-06

Family

ID=12342997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1031867A Granted JPH02211907A (en) 1989-02-09 1989-02-09 Sheet thickness control method for continuous hot rolling mill

Country Status (1)

Country Link
JP (1) JPH02211907A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020051522A (en) * 2000-12-22 2002-06-29 이구택 A method of calibrating roll gap of rolling machine
CN106984651A (en) * 2017-05-26 2017-07-28 江苏省沙钢钢铁研究院有限公司 A kind of on-line control system for improving rolled piece thickness control accuracy
CN113843286A (en) * 2021-08-31 2021-12-28 欧开来 Optical fiber sensing intelligent monitoring system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58218317A (en) * 1982-06-14 1983-12-19 Sumitomo Metal Ind Ltd Method for dimension control in hot state in blooming
JPS59141309A (en) * 1983-02-03 1984-08-14 Sumitomo Metal Ind Ltd Method and device for measuring sheet thickness in hot rolling
JPS60240328A (en) * 1984-05-14 1985-11-29 Kawasaki Steel Corp Controlling device of plate thickness in hot finishing mill
JPH0242001A (en) * 1988-08-02 1990-02-13 Kansai Paint Co Ltd Preservation of cut flower
JPH0555205A (en) * 1991-08-26 1993-03-05 Sony Corp Semiconductor device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58218317A (en) * 1982-06-14 1983-12-19 Sumitomo Metal Ind Ltd Method for dimension control in hot state in blooming
JPS59141309A (en) * 1983-02-03 1984-08-14 Sumitomo Metal Ind Ltd Method and device for measuring sheet thickness in hot rolling
JPS60240328A (en) * 1984-05-14 1985-11-29 Kawasaki Steel Corp Controlling device of plate thickness in hot finishing mill
JPH0242001A (en) * 1988-08-02 1990-02-13 Kansai Paint Co Ltd Preservation of cut flower
JPH0555205A (en) * 1991-08-26 1993-03-05 Sony Corp Semiconductor device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020051522A (en) * 2000-12-22 2002-06-29 이구택 A method of calibrating roll gap of rolling machine
CN106984651A (en) * 2017-05-26 2017-07-28 江苏省沙钢钢铁研究院有限公司 A kind of on-line control system for improving rolled piece thickness control accuracy
CN113843286A (en) * 2021-08-31 2021-12-28 欧开来 Optical fiber sensing intelligent monitoring system

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