JPH0416245B2 - - Google Patents
Info
- Publication number
- JPH0416245B2 JPH0416245B2 JP60176186A JP17618685A JPH0416245B2 JP H0416245 B2 JPH0416245 B2 JP H0416245B2 JP 60176186 A JP60176186 A JP 60176186A JP 17618685 A JP17618685 A JP 17618685A JP H0416245 B2 JPH0416245 B2 JP H0416245B2
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- loop
- amount
- rolled
- control
- 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.)
- Expired - Lifetime
Links
- 238000005096 rolling process Methods 0.000 claims description 47
- 239000000725 suspension Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 24
- 238000004364 calculation method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002436 steel type Substances 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000872 buffer Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 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
- B21B37/48—Tension control; Compression control
- B21B37/50—Tension control; Compression control by looper control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は条材を複数の圧延スタンドにより連続
的に延伸するにあたり、圧延スタンド間にループ
を形成され、そのループ懸垂量を制御信号として
上流側または下流側の圧延ロール回転数を制御す
る方法の改良に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention involves forming a loop between the rolling stands when a strip is continuously stretched using a plurality of rolling stands, and using the amount of suspension of the loop as a control signal to The present invention relates to an improvement in a method for controlling the rotational speed of side or downstream rolling rolls.
（発明の背景）
近年、圧延上がりの棒線成品を直接冷却鍛造で
きるように全長に渡つて高い寸法精度を実現しう
る圧延方法が強く望まれ、かかる要望に答えるべ
く、本発明者らは圧延列列間を含む比較的スパン
の長いスタンド間において、従来は、バツフアと
してしか認識していなかつた条材のループに着目
し、このループの懸垂量を強力（スタンド間にお
ける条材の張力又は圧縮力の総称）に対応させて
制御することにより、軸力を制御するという簡単
で、かつ制御精度のよい方法を提供するにいたつ
た（特願昭58−238502号（特開昭60−130411
号））。(Background of the Invention) In recent years, there has been a strong desire for a rolling method that can achieve high dimensional accuracy over the entire length so that rolled rod and wire products can be directly cooled and forged. Between stands with relatively long spans, including between rows, we focused on the loops of strips that were conventionally only recognized as buffers, and we calculated the amount of suspension of these loops to be strong (the tension or compression of the strips between stands). We have developed a simple and highly accurate method of controlling axial force (Japanese Patent Application No. 58-238502 (Japanese Unexamined Patent Application No. 60-130411)).
issue)).
しかしながら、かかる方法にあつては、圧延ス
タンド間の目標軸力に対して被圧延材の鋼種と断
面形状寸法と平均温度とに基づいて予めループ懸
垂量の目標値を算定し、実測ループ懸垂量と比較
してその偏差が無くなるように圧延ロール回転数
を制御するという方法を採用するため、設定パラ
メータに問題があると、ループ懸垂量と軸力との
相関性が低下し、正確に圧延制御が行えないとい
う問題がある。特に条鋼類の圧延においては、圧
延材の断面が大きい個所、あるいは粗圧延列と中
間圧延列との間のように列間距離が大きい個所
（一般に、クロツプ＆コグルシヤーが設けられ、
10〜15ｍ）において、ループ量が不可避的に大き
くなり、ループ量が過大となると、ループを形成
する被圧延材の自重による引つ張り力が発生して
被圧延材の形状寸法が大きい影響を受け、断面形
状寸法について予め設定したパラメータとの間に
ズレが生じ、その結果、ループ量を目標値に制御
できなくなつたり、制御応答遅れを招来したり、
制御精度上問題の生ずる場合のあることが見出さ
れた。 However, in such a method, the target value of the loop suspension amount is calculated in advance based on the steel type, cross-sectional shape and average temperature of the material to be rolled with respect to the target axial force between the rolling stands, and the actual loop suspension amount is calculated in advance. The method is to control the rotation speed of the rolling rolls so that there is no deviation compared to The problem is that it cannot be done. Particularly in the rolling of long steel products, areas where the cross section of the rolled material is large or areas where the distance between the rows is large, such as between the rough rolling row and the intermediate rolling row (generally, crop and coglucia are provided,
10 to 15 m), the loop amount inevitably becomes large, and when the loop amount becomes excessive, a tensile force is generated due to the weight of the rolled material forming the loop, and the shape and dimensions of the rolled material have a large effect. As a result, a discrepancy occurs between the cross-sectional shape and dimensions and the preset parameters, and as a result, it becomes impossible to control the loop amount to the target value, or a delay in control response occurs.
It has been found that problems may arise in terms of control accuracy.
（発明の課題）
本発明は、現今のas−rollにおける厳しい寸法
精度にも耐えうるように、上記圧延制御方法を改
良せんとするものである。(Problem of the Invention) The present invention aims to improve the above-mentioned rolling control method so that it can withstand the severe dimensional accuracy of present-day as-roll.
（発明の構成）
このため、本発明は、圧延スタンド間において
ルーパーにより条材をループさせつつ、複数の圧
延スタンドにより連続的に圧延するにあたり、圧
延スタンド間でのループ懸垂量を検出し、予め設
定した目標ループ懸垂量と検出ループ懸垂量との
偏差を演算し、前、後の圧延スタンドにおける圧
延速度の少なくとも一方を該偏差が零となるよう
に制御する一方、上記ループの最下点に該当する
位置に設けた昇降ローラを上記目標ループ懸垂量
に該当する高さに保持して、ループ懸垂量が目標
ループ懸垂量以上にならないように条材のループ
を規制するようにしたことを特徴とする条材の圧
延制御方法を提供するものである。(Structure of the Invention) For this reason, the present invention detects the amount of loop suspension between the rolling stands and rolls the strip continuously by a plurality of rolling stands while looping the strip using a looper between the rolling stands. The deviation between the set target loop suspension amount and the detected loop suspension amount is calculated, and at least one of the rolling speeds in the front and rear rolling stands is controlled so that the deviation becomes zero. A lifting roller provided at a corresponding position is held at a height corresponding to the target loop suspension amount, and the loop of the strip is regulated so that the loop suspension amount does not exceed the target loop suspension amount. The present invention provides a method for controlling rolling of a strip material.
以下、本発明をその具体例を示す添付図面に基
づいて説明する。 Hereinafter, the present invention will be explained based on the accompanying drawings showing specific examples thereof.
（実施例）
第１図は本発明にかかる圧延制御方法が適用さ
れる圧延装置の概略ブロツク図で、第２図は被圧
延材を支持する昇降ローラの制御装置の概略図で
ある。(Example) FIG. 1 is a schematic block diagram of a rolling apparatus to which the rolling control method according to the present invention is applied, and FIG. 2 is a schematic diagram of a control device for lifting rollers that support a rolled material.
図面において、１は上流側の圧延ロール、２は
圧延ロール１の回転軸とは直交する回転軸を有す
る下流側の圧延ロールで、条材の被圧延材３はパ
スライン４を基準に図中左から右に進行する。圧
延ロール１の出口近傍には、パスライン４と接す
るようにガイド用の出口ローラ５が配設され、圧
延ロール２の入口近傍にはパスライン４に対し、
出口ローラ５と同じ側に入口ローラ６が配設され
る。圧延ロール１，２と各ローラ５，６の位置関
係は、スタンド間距離Ｌの中央すなわち仮想線７
に関し対称である。そして、被圧延材３に対して
は、圧延ロール１，２が左右の固定端となり、出
口ローラ５と入口ローラ６のそれぞれは変位を与
える自由端を形成し、被圧延材３はこの出口、入
口ローラ５，６間で対称のループ８を形成する。 In the drawing, 1 is an upstream rolling roll, 2 is a downstream rolling roll having a rotational axis perpendicular to the rotational axis of the rolling roll 1, and the rolled material 3, which is a strip, is rolled in the drawing based on a pass line 4. Proceed from left to right. Near the exit of the roll 1, a guide exit roller 5 is arranged so as to be in contact with the pass line 4, and near the entrance of the roll 2, with respect to the pass line 4,
An inlet roller 6 is arranged on the same side as the outlet roller 5. The positional relationship between the rolling rolls 1, 2 and each roller 5, 6 is at the center of the distance L between the stands, that is, the imaginary line 7.
It is symmetrical with respect to For the material to be rolled 3, the rolling rolls 1 and 2 serve as fixed ends on the left and right, the exit roller 5 and the inlet roller 6 each form a free end that provides displacement, and the material to be rolled 3 is at this exit, A symmetrical loop 8 is formed between the inlet rollers 5, 6.
１０はループ８の懸垂量を検出する懸垂量検出
器、１１は電子演算制御手段としてのコンピユー
タ、１２はマニユアルによりパラメータを設定す
るパラメータ設定盤で、上記コンピユータ１１に
は少なくとも演算制御部１３とデータ記憶部１４
とデータ比較部１５とを含む。データ記憶部１４
には、被圧延材３の鋼種、平均温度で特定される
ヤング率のテーブル、被圧延材３に関する一義的
に決定されるループ懸垂量の目標値テーブル、並
びにその他のテーブルないし個別のデータが記憶
されている。 10 is a suspension amount detector for detecting the suspension amount of the loop 8; 11 is a computer as an electronic calculation control means; 12 is a parameter setting board for manually setting parameters; the computer 11 has at least a calculation control unit 13 and data Storage unit 14
and a data comparison section 15. Data storage unit 14
The table stores the steel type of the material to be rolled 3, a table of Young's modulus specified by the average temperature, a table of target values for the loop suspension amount uniquely determined for the material to be rolled 3, and other tables or individual data. has been done.
設定盤１２からスタンド間を特定する情報、即
ち圧延ロール１，２間の距離、ローラ５，６間の
距離等のパラメータ、被圧延材３の鋼種、断面形
状寸法、平均温度、目標軸力等のパラメータ群ｐ
を入力する。演算制御部１３はこれに応じて記憶
部１４のヤング率テーブルを索引するとともに、
合わせて他の入力データを参照して目標軸力に対
応するループ懸垂量の目標値δ0を決定し、比較部
１５に出力する。比較部１５では、目標値δ0と懸
垂量検出器１０からの実測値δとを比較し、その
偏差εを演算制御部１３に入力する。演算制御部
１３は、この偏差εに応じて偏差εが零となるよ
うに制御信号Cu又は制御信号Cdを出力する。制
御信号Cuは、二次的には上流側の圧延ロール１
に与えられるが、圧延ロール１の制御に続いて上
流側の圧延ロール全体に対しサクセシブ制御が行
なわれる。制御信号Cdについても同様である。
なお、上記のループ制御に関しては、前掲の特開
昭60−130411号公報に詳細に説明されているの
で、これを参照されたい。 Information specifying the distance between the stands from the setting panel 12, that is, parameters such as the distance between the rolling rolls 1 and 2, the distance between the rollers 5 and 6, the steel type of the rolled material 3, cross-sectional shape, average temperature, target axial force, etc. parameter group p
Enter. In response to this, the calculation control unit 13 indexes the Young's modulus table in the storage unit 14, and
At the same time, with reference to other input data, a target value δ 0 of the loop suspension amount corresponding to the target axial force is determined and outputted to the comparison section 15 . The comparator 15 compares the target value δ 0 with the actual value δ from the suspension amount detector 10 and inputs the deviation ε to the arithmetic control unit 13 . The calculation control unit 13 outputs the control signal Cu or the control signal Cd according to the deviation ε so that the deviation ε becomes zero. The control signal Cu is secondarily applied to the upstream rolling roll 1.
However, following the control of the roll 1, successive control is performed on all the rolls on the upstream side. The same applies to the control signal Cd.
Note that the loop control described above is explained in detail in the above-mentioned Japanese Patent Laid-Open No. 130411/1983, so please refer to this.
本発明においては、上記する圧延スタンド間に
ループ懸垂する被圧延材の自重により所定以上の
引つ張り力が発生する区域として、例えば、条鋼
圧延における粗圧延列１と中間圧延列２に配設さ
れるダウンルーパー５，６間の中間位置に、ルー
プ懸垂する被圧延材Ｗを下方から支持する昇降ロ
ーラ２０を設け、上記自重による過大な引つ張り
力を解消させるように被圧延材Ｗを制御支持す
る。詳しくは、昇降ローラ２０は縦方向に延びる
ガイド２１に対し支持部材２２を介して昇降可能
に設けられ、該支持部材２２をアーム２３を介し
てエアーシリンダ２４のピストンロツド２５と連
結し、該エアーシリンダを図示のように圧力変更
用ソレノイドバルブ２６、上下方向移動用ソレノ
イドバルブ２７、圧力調整弁２８を配列し、圧力
調整弁２８を予めループ懸垂する被圧延材の自重
に応じて所定の圧力に設定し、上記圧力変更用ソ
レノイドバルブ２６および上下方向移動用ソレノ
イドバルブ２７を操作して昇降ーラの支持圧力及
び昇降位置を調節してループ懸垂する被圧延材の
最下点を目標ループ懸垂量以上にならないように
支持し、自重による引つ張り力を解消させるよう
に被圧延材を制御支持する。なお、４はパスライ
ンを示す。 In the present invention, as areas where a tensile force of a predetermined level or more is generated due to the weight of the material to be rolled suspended in a loop between the rolling stands, for example, the areas are arranged in the rough rolling row 1 and the intermediate rolling row 2 in long bar rolling. An elevating roller 20 is provided at an intermediate position between the down loopers 5 and 6 to support the rolled material W suspended in a loop from below. Control support. Specifically, the elevating roller 20 is provided so as to be movable up and down with respect to a vertically extending guide 21 via a support member 22, and the support member 22 is connected to a piston rod 25 of an air cylinder 24 via an arm 23. As shown in the figure, a pressure change solenoid valve 26, a vertical movement solenoid valve 27, and a pressure adjustment valve 28 are arranged, and the pressure adjustment valve 28 is set in advance to a predetermined pressure according to the weight of the rolled material suspended in a loop. Then, the pressure change solenoid valve 26 and the vertical movement solenoid valve 27 are operated to adjust the support pressure and lifting position of the lifting roller so that the lowest point of the rolled material to be loop suspended is equal to or higher than the target loop hanging amount. The material to be rolled is supported in a controlled manner so that the material to be rolled is supported so as not to become Note that 4 indicates a pass line.
（発明の作用効果）
以上の説明で明らかなように、本発明によれ
ば、条材を複数の圧延スタンドにより連続的に延
伸するにあたり、圧延スタンド間の目標軸力に対
して被圧延材の鋼種と断面形状寸法と平均温度と
に基づいて予め算定されるループ懸垂量の目標値
と実測ループ懸垂量とを比較して、その偏差が無
くなるように圧延ロール回転数を制御するに際
し、自重による引つ張り力を解消させるように被
圧延材を制御支持するため、被圧延材に断面が大
きい個所、あるいは粗圧延列と中間圧延列との間
のように列間距離が大きい個所においては、ルー
プを形成する被圧延材の自重による引つ張り力が
発生して被圧延材の形状寸法が大きな影響を受
け、断面形状寸法について正確なパラメータを設
定し得ないという問題が解消され、実測ループ懸
垂量を制御信号として目標軸力を設定しても、常
に正確に圧延制御が行えるので、条鋼類の圧延制
御方法として画期的である。(Operations and Effects of the Invention) As is clear from the above explanation, according to the present invention, when a strip is continuously stretched by a plurality of rolling stands, the amount of the material to be rolled is adjusted to the target axial force between the rolling stands. When comparing the actual loop suspension amount with the target value of the loop suspension amount calculated in advance based on the steel type, cross-sectional shape, and average temperature, and controlling the rolling roll rotation speed so as to eliminate the deviation, it is necessary to In order to control and support the rolled material so as to eliminate the tensile force, in areas where the rolled material has a large cross section or where the distance between the rows is large, such as between the rough rolling row and the intermediate rolling row, The problem of not being able to set accurate parameters for the cross-sectional shape and dimensions due to the generation of tensile force due to the weight of the rolled material that forms the loop, which greatly affects the shape and dimensions of the rolled material, has been resolved. Even if the target axial force is set using the suspension amount as a control signal, rolling control can always be performed accurately, so this method is revolutionary as a rolling control method for long steel products.
第１図は本発明にかかる圧延制御方法が適用さ
れる圧延装置の概略ブロツク図で、第２図は被圧
延材を支持する昇降ローラの制御装置の概略図で
ある。
１……粗圧延列、２……中間圧延列、２０……
昇降ローラ。
FIG. 1 is a schematic block diagram of a rolling apparatus to which the rolling control method according to the present invention is applied, and FIG. 2 is a schematic diagram of a control device for lifting rollers that support a rolled material. 1... Rough rolling row, 2... Intermediate rolling row, 20...
Lifting roller.
Claims (1)
をループさせつつ、複数の圧延スタンドにより連
続的に圧延するにあたり、 圧延スタンド間でのループ懸垂量を検出し、予
め設定した目標ループ懸垂量と検出ループ懸垂量
との偏差を演算し、前、後の圧延スタンドにおけ
る圧延速度の少なくとも一方を該偏差が零となる
ように制御する一方、上記ループの最下点に該当
する位置に設けた昇降ローラを上記目標ループ懸
垂量に該当する高さに保持して、ループ懸垂量が
目標ループ懸垂量以上にならないように条材のル
ープを規制するようにしたことを特徴とする条材
の圧延制御方法。[Claims] 1. When continuously rolling a strip using a plurality of rolling stands while looping the strip using a looper between rolling stands, detect the amount of loop suspension between the rolling stands and set a preset target loop suspension. and the detection loop suspension amount, and control at least one of the rolling speeds in the front and rear rolling stands so that the deviation becomes zero. The lifting roller is held at a height corresponding to the target loop suspension amount, and the loops of the strip are regulated so that the loop suspension amount does not exceed the target loop suspension amount. Rolling control method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60176186A JPS6234613A (en) | 1985-08-09 | 1985-08-09 | Rolling control method for bar material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60176186A JPS6234613A (en) | 1985-08-09 | 1985-08-09 | Rolling control method for bar material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6234613A JPS6234613A (en) | 1987-02-14 |
| JPH0416245B2 true JPH0416245B2 (en) | 1992-03-23 |
Family
ID=16009150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60176186A Granted JPS6234613A (en) | 1985-08-09 | 1985-08-09 | Rolling control method for bar material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6234613A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2727041B1 (en) * | 1994-11-18 | 1996-12-13 | Lorraine Laminage | METHOD AND DEVICE FOR CONTROLLING HOT ROLLING OF METAL STRIP, ESPECIALLY STEEL, AT LOW VOLTAGE |
| KR100832973B1 (en) | 2006-12-04 | 2008-05-27 | 주식회사 포스코 | Damper of looper table |
| AT509831B1 (en) * | 2010-04-30 | 2012-03-15 | Siemens Vai Metals Tech Gmbh | METHOD AND DEVICE FOR MINIMIZING THE STRAP TRAIN OF A ROLL |
| JP2017024727A (en) | 2015-07-16 | 2017-02-02 | 日立造船株式会社 | Hermetically sealed bag, hermetically sealed package, aseptic charging system and method for manufacturing hermetically sealed package |
-
1985
- 1985-08-09 JP JP60176186A patent/JPS6234613A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6234613A (en) | 1987-02-14 |
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