JPH0679733B2 - Steel strip meandering detection method - Google Patents
Steel strip meandering detection methodInfo
- Publication number
- JPH0679733B2 JPH0679733B2 JP60201494A JP20149485A JPH0679733B2 JP H0679733 B2 JPH0679733 B2 JP H0679733B2 JP 60201494 A JP60201494 A JP 60201494A JP 20149485 A JP20149485 A JP 20149485A JP H0679733 B2 JPH0679733 B2 JP H0679733B2
- Authority
- JP
- Japan
- Prior art keywords
- meandering
- steel strip
- tension
- tension distribution
- roll
- 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
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
- B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/04—Lateral deviation, meandering, camber of product
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、鋼帯の連続処理設備における鋼帯の蛇行検出
方法に関するものである。Description: TECHNICAL FIELD The present invention relates to a method for detecting meandering of a steel strip in a continuous processing facility for steel strip.
（従来の技術） 鉄鋼業の冷延部門における連続処理設備には、酸洗，冷
間圧延，連続焼鈍，連続メツキ等の設備がありこれらは
操業上、途中でライン停止すると品質の障害がおきるた
め鋼帯ため込み装置などをもうけ、コイルの受け出し時
に設備の入側、出側でライン停止しても鋼帯の連続表面
処理が行なえる構造となつている。そしてこれらの設備
ではラインの長さが長大化し蛇行などの問題が発生して
いる。(Prior art) Continuous processing equipment in the cold rolling department of the steel industry includes equipment such as pickling, cold rolling, continuous annealing, continuous plating, etc. These operations cause quality problems if the line is stopped midway. Therefore, it has a structure for accumulating steel strips so that continuous surface treatment of steel strips can be performed even if the line is stopped at the entrance and exit sides of the equipment when receiving the coil. And in these facilities, the length of the line becomes large and problems such as meandering occur.
本来蛇行の原因は設備に起因するものと、原板に起因す
るものにわける事ができる。設備起因のものはその原因
として、ロールアライメントの狂い（水平度，平行度）
や、ロールの片摩耗、ロール片圧下などの原因が考えら
れる。これらは設備の調整や補修などによりその発生を
皆無にする事が可能である。一方、原板起因による蛇行
の原因は、鋼板の平坦度不良（中伸び、耳伸び）であ
る。この鋼帯形状不良の問題は、現在の圧延技術のレベ
ルにおいては、その発生を皆無にする事ができない。従
つて連続処理設備ではある程度の蛇行を矯正できるよう
に蛇行矯正装置が用いられている。Originally, the cause of meandering can be divided into those caused by the equipment and those caused by the original plate. The cause of equipment is the roll alignment error (horizontality, parallelism).
It is also possible that the cause is roll wear on one side, roll roll reduction, etc. It is possible to eliminate the occurrence of these by adjusting and repairing equipment. On the other hand, the cause of meandering due to the original plate is poor flatness of the steel plate (medium extension, edge extension). The problem of the defective shape of the steel strip cannot be completely eliminated at the current level of rolling technology. Therefore, in continuous processing equipment, a meandering correction device is used so as to correct the meandering to some extent.
現在の蛇行防止技術は、たとえば特開昭57-137431号公
報に述べてあるようにハースロールのクラウンを可変す
ることにより蛇行を防止することが知られている。It is known that the current meandering preventing technology prevents meandering by changing the crown of the hearth roll as described in Japanese Patent Laid-Open No. 57-137431.
その他の蛇行防止技術は、鋼帯位置検出器により、直
接、鋼帯の位置を検出し、蛇行矯正ロールを傾動させ、
蛇行を修正する方法等が知られている。従つて、ロール
スパンが長くて蛇行しやすい様な設備箇所では、新た
に、その箇所に蛇行矯正装置をとりつけるなどの処置が
行なわれる。In other meandering prevention technology, the steel strip position detector directly detects the position of the steel strip and tilts the meandering correction roll.
A method for correcting meandering is known. Therefore, at a facility location where the roll span is long and it is easy to meander, measures such as newly installing a meandering correction device at that location are performed.
（発明が解決しようとする問題点） 連続焼鈍炉内等では鋼帯位置検出器のとりつけが難し
く、従来はテレビカメラなどで鋼帯位置を検出し、蛇行
矯正ロールを手動で動かし、蛇行に対処していた。しか
し鋼帯の中には炉内に入つて急激に蛇行したりするもの
が存在しこの急激な蛇行に対しては、手動による矯正で
は間に合わず、しばしば耳荒れや破断などのトラブルを
招いていた。そこで本発明は鋼帯の蛇行を未然に検出
し、その蛇行を防止することを目的としたものである。(Problems to be solved by the invention) It is difficult to mount a steel strip position detector in a continuous annealing furnace. Conventionally, the steel strip position is detected by a TV camera or the like, and the meandering correction roll is manually moved to cope with the meandering. Was. However, some steel strips enter the furnace and meander suddenly, and for this sudden meandering, manual correction could not make it in time, often leading to problems such as roughening of the ears and breakage. . Therefore, the present invention has an object to detect the meandering of a steel strip and prevent the meandering.
（問題点を解決するための手段） 原板起因による蛇行は、その張力分布の不均一と関係が
ある。そこで本発明は鋼帯の張力分布検出器を用いて板
幅方向の張力分布を測定し、張力分布の不均一の度合を
鋼板の幅方向の中心軸に対するモーメントを計算し、モ
ーメントの中心軸に対する左右のバランスに応じて蛇行
の大小を判定し、モーメントの差により蛇行を検出する
ものである。(Means for Solving Problems) The meandering caused by the original plate is related to uneven tension distribution. Therefore, the present invention measures the tension distribution in the strip width direction using a steel strip tension distribution detector, calculates the degree of unevenness of the tension distribution with respect to the center axis of the width direction of the steel sheet, and calculates the moment with respect to the center axis of the moment. The size of the meandering is determined according to the left-right balance, and the meandering is detected by the difference in moment.
ここで張力分布検出器は鋼帯の幅方向の張力分布がわか
るものであれば、いかなる方式でもよく、例えば、ロー
ルの内部に歪ゲージや圧電素子などを組み込みロールの
表面が押される力を検出するものなどがあげられる。Here, the tension distribution detector may be of any type as long as the tension distribution in the width direction of the steel strip can be understood. For example, a strain gauge or a piezoelectric element is incorporated inside the roll to detect the force pressing the surface of the roll. There are things to do.
（作用） 第１図（ａ）、（ｂ）、第２図により本発明を説明す
る。(Operation) The present invention will be described with reference to FIGS. 1 (a), (b) and FIG.
第１図（ａ）、（ｂ）は鋼帯の張力分布の不均一と蛇行
との関係を説明するものである。張力分布不均一の蛇行
に及ぼす影響は次の２つの場合にわける事ができる。１
つは第１図（ａ）に示すキヤンバーによるものである。
圧延機では捲き取り張力が高く、小さなキヤンバーは張
力の影響により滞在化する。この時張力分布は、曲がつ
たものをまつすぐにするため、張力分布の不均一を生じ
る。これが低張力の設備にくると、キヤンバーが顕在化
し、蛇行の原因となる。従つて張力分布の不均一の度合
がわかればキヤンバーの大きさを推定する事ができ、蛇
行の大小の判定が可能である。FIGS. 1 (a) and 1 (b) illustrate the relationship between the uneven tension distribution of the steel strip and the meandering. The influence on the meandering of the uneven tension distribution can be divided into the following two cases. 1
One is due to the chamber shown in Fig. 1 (a).
The rolling tension is high in the rolling mill, and the small cabs stay in place due to the tension. At this time, the tension distribution causes the curved one to be lashed, so that the tension distribution becomes nonuniform. When this comes to low-tension equipment, the cavern becomes visible and causes meandering. Therefore, if the degree of unevenness of the tension distribution is known, the size of the chamber can be estimated, and the size of the meandering can be determined.
もう１つは第１図（ｂ）に示すように耳伸びなど局部的
な形状不良が生じた場合である。形状不良が顕在化して
いる部分の張力は０である。従つてこの様な状態でロー
ルにまかれるとロールと鋼帯の摩擦力は板幅方向に不均
一に作用し、鋼帯にモーメントが作用する形となり、ロ
ールに対する鋼帯の入射角を変化させ蛇行を発生する。
更に連続焼鈍炉内のハースロールにはクラウンがついて
いるため、クラウンによる調芯作用が外乱として働き、
急激な蛇行を発生させる場合もある。The other is a case where a local shape defect such as ear extension occurs as shown in FIG. 1 (b). The tension of the portion where the defective shape is apparent is zero. Therefore, when the roll is rolled in such a state, the frictional force between the roll and the steel strip acts non-uniformly in the strip width direction, and the moment acts on the steel strip, changing the angle of incidence of the steel strip on the roll. Causes meandering.
Furthermore, since the hearth roll in the continuous annealing furnace has a crown, the centering function of the crown acts as a disturbance,
In some cases, sudden meandering may occur.
以上、いずれも蛇行の発生は鋼帯の張力分布の不均一に
よるものである。従つて例えば張力分布の板幅方向の中
心に対するモーメントのアンバランスを計算する事によ
り蛇行の推定が可能となる。As described above, the meandering is caused by the uneven tension distribution of the steel strip. Therefore, for example, the meandering can be estimated by calculating the imbalance of the moment with respect to the center of the tension distribution in the plate width direction.
計算方法は第２図に示す鋼帯のワークサイド、ドライブ
サイドの張力等により下記の式を用いて計算する。The calculation method is based on the tensions on the work side and drive side of the steel strip shown in FIG.
M0＝（ａ×W1＋ｂ×W2＋…）−（ａ×D1＋ｂ×D2＋…） W1,W2 ：ワークサイドの張力（センサー出力） D1,D2 ：ドライブサイドの張力（センサー出力） a,b ：鋼帯の幅方向中心からセンサーまでの距離 M0 ：板中心に対するモーメントのバランス （実施例） 第２図の様に鋼帯１の幅方向の中心軸２に対して張力と
中心までの積、即ちモーメントを計算しそれを中心軸に
対して左側と右側でそれぞれ行ない、右と左とのモーメ
ントの差により、その蛇行量と、蛇行の方向が推定可能
である。M 0 = (a × W 1 + b × W 2 + ...)-(a × D 1 + b × D 2 + ...) W 1 , W 2 : Workside tension (sensor output) D 1 , D 2 : Drive side Tension (sensor output) a, b: Distance from the center of the steel strip in the width direction to the sensor M 0 : Balance of moment with respect to the plate center (Example) As shown in FIG. 2, the central axis 2 of the steel strip 1 in the width direction For tension, the product to the center, that is, the moment, is calculated, and the moment is calculated on the left and right sides of the center axis. The meandering amount and the meandering direction can be estimated by the difference between the moments on the right and left sides. Is.
即ち本発明は張力分布検出器を用いて板幅方向の張力分
布を検出し、板幅の中心に対する張力のモーメントの左
右のアンバランスを演算により求め、蛇行の大小を検出
するものである。That is, the present invention detects the distribution of tension in the plate width direction using a tension distribution detector, calculates the left and right imbalance of the moment of tension with respect to the center of the plate width, and detects the magnitude of meandering.
（発明の効果） 本発明は、蛇行の発生しやすい長大な表面処理設備にお
いて通板される鋼帯の蛇行の発生を検出する事が可能と
なる。特に連続焼鈍炉においては炉内通板前に蛇行の情
報を得る事ができるため炉内張力やラインスピードの調
整により蛇行をおさえ蛇行によるトラブルをなくす事が
可能である。(Effects of the Invention) The present invention makes it possible to detect the occurrence of meandering of a steel strip that is threaded in a long surface treatment facility in which meandering easily occurs. Especially in a continuous annealing furnace, since information on the meandering can be obtained before the passage of the steel in the furnace, it is possible to suppress the meandering by adjusting the tension in the furnace and the line speed to eliminate the trouble caused by the meandering.
第１図（ａ）、（ｂ）は鋼帯の張力分布の不均一と蛇行
との関係を示す説明図、第２図は張力分布の不均一の評
価方法を示す説明図である。 １は鋼帯、２は中心軸。FIGS. 1 (a) and 1 (b) are explanatory views showing the relationship between the unevenness of the tension distribution of the steel strip and the meandering, and FIG. 2 is an illustration showing the method of evaluating the unevenness of the tension distribution. 1 is a steel strip and 2 is a central axis.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実願 昭59−99009号（実開 昭57− 200858号）のマイクロフィルム（ＪＰ, Ｕ) 実願 昭52−68428号（実開 昭50− 15607号）のマイクロフィルム（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Microfilm (JP, U) of application 59-99009 (Act 57-5858) Application 52-68428 (Act 50-15607) No.) micro film (JP, U)
Claims (1)
力分布を検出し、該張力分布により板幅中心に対して左
右のモーメント差を算出し、該モーメントの差により蛇
行を検出することを特徴とする鋼帯の蛇行検出方法。1. A method for detecting tension distribution in a strip width direction in a steel strip continuous processing facility, calculating a moment difference between left and right with respect to a strip width center based on the tension distribution, and detecting meandering based on the difference in moment. A method for detecting the meandering of a steel strip characterized by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60201494A JPH0679733B2 (en) | 1985-09-13 | 1985-09-13 | Steel strip meandering detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60201494A JPH0679733B2 (en) | 1985-09-13 | 1985-09-13 | Steel strip meandering detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6261710A JPS6261710A (en) | 1987-03-18 |
| JPH0679733B2 true JPH0679733B2 (en) | 1994-10-12 |
Family
ID=16441985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60201494A Expired - Lifetime JPH0679733B2 (en) | 1985-09-13 | 1985-09-13 | Steel strip meandering detection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0679733B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4644047B2 (en) * | 2005-06-17 | 2011-03-02 | 三菱日立製鉄機械株式会社 | Meander detection device and method |
| JP4712580B2 (en) * | 2006-03-01 | 2011-06-29 | 株式会社神戸製鋼所 | Meander control method in reverse rolling |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5268428U (en) * | 1975-11-15 | 1977-05-20 | ||
| JPS5916527B2 (en) * | 1977-03-07 | 1984-04-16 | 新日本製鐵株式会社 | How to correct meandering strips |
| JPS5999009U (en) * | 1982-12-23 | 1984-07-04 | 石川島播磨重工業株式会社 | Strip meandering control device |
-
1985
- 1985-09-13 JP JP60201494A patent/JPH0679733B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6261710A (en) | 1987-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0684091A1 (en) | Snaking control method and tandem plate rolling mill facility line | |
| US5778717A (en) | Process and device for rolling bands with uneven thickness and/or length distribution over their width | |
| JPH0679733B2 (en) | Steel strip meandering detection method | |
| JP4288888B2 (en) | Strip meander control device and meander control method for tandem rolling mill | |
| JP3194260B2 (en) | Chatter mark prevention device in temper rolling mill | |
| JPH07164034A (en) | Rolled plate shape control method | |
| JP3298465B2 (en) | Prevention method of sheet warpage in hot rolling | |
| JPH0545325B2 (en) | ||
| JPH0289757A (en) | Method for adjusting meandering of band material | |
| JP2740119B2 (en) | Method and apparatus for detecting shape of rolled material | |
| JP3117913B2 (en) | Shape control method and temper rolling mill in temper rolling | |
| JP2675175B2 (en) | How to measure the warp of the strip | |
| JP3085212B2 (en) | Method for preventing meandering of rolled material in tandem rolling mill | |
| JPS591021A (en) | Detecting method of coil tightness | |
| JPH01224615A (en) | Plate curvature detecting device | |
| JP2776937B2 (en) | How to prevent meandering of steel strip | |
| JPS595366B2 (en) | Method for correcting meandering in strip steel rolling | |
| JPH07124620A (en) | A strip meandering control device in a cold rolling mill. | |
| JPH09234505A (en) | Shape control method for reversible rolling mill | |
| JPS60238020A (en) | Shape controlling method of strip in tandem rolling | |
| JP2021023993A (en) | Method for mounting metal band coil and apparatus for mounting metal band coil | |
| JPS591132B2 (en) | Method and device for detecting slips in rolled strip material | |
| JP2002273510A (en) | Method and apparatus for preventing squeezing of rear end of rolled material in continuous rolling | |
| JPH0289513A (en) | Metal plate rolling method | |
| JPH0557525B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |