JPH0576916A - Method for controlling width in cold tandem rolling - Google Patents

Method for controlling width in cold tandem rolling

Info

Publication number
JPH0576916A
JPH0576916A JP3236365A JP23636591A JPH0576916A JP H0576916 A JPH0576916 A JP H0576916A JP 3236365 A JP3236365 A JP 3236365A JP 23636591 A JP23636591 A JP 23636591A JP H0576916 A JPH0576916 A JP H0576916A
Authority
JP
Japan
Prior art keywords
width
tension
rolling
rolling speed
strip width
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
Application number
JP3236365A
Other languages
Japanese (ja)
Inventor
Yasutaka Uchida
泰隆 内田
Shunji Goto
俊二 後藤
Shigeru Kuroda
茂 黒田
Norio Ota
範男 太田
Toko Teshiba
東光 手柴
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP3236365A priority Critical patent/JPH0576916A/en
Publication of JPH0576916A publication Critical patent/JPH0576916A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To remarkably reduce variation in width of a coil, to advantageously deal with the requirement of width change in the same coil and to control the finished width only by information on the upstream side of rolling line. CONSTITUTION:In cold tandem rolling, the effect of rolling speed and tension between stands that affects on fluctuation in width of material to be rolled of every kinds of steel and every thickness is preliminarily determined as relation shown by the formula 1. When rolling speed is varied, the adequate ratio of variation of tension that the fluctuation rate of width falls in a specified range is calculated based on the formula 1 and tension between stands is controlled according to this calculated value. B=a0+a1XVr+a2XTs... 1. Where, B: rate of fluctuation in width, Vr: rolling speed, Ts: ratio of variation of tension between stands, a0, a1, a2: constant that are decided in accordance with kinds of steel and thickness.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、冷間タンデム圧延に
おける板幅制御方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strip width control method in cold tandem rolling.

【0002】[0002]

【従来の技術】最近、歩留り向上、コスト低減及び納期
短縮などの観点から、冷間圧延においても板幅制御が重
要な項目に挙げられている。従来、板幅制御法として
は、たとえば特公昭59-22603号公報に提案されているよ
うな、最終スタンドの出側に設置されたブライドルロー
ルの出側板幅を検出し、最終スタンド〜ブライドルロー
ル間の張力を制御することによって板幅を制御する方法
や、特開平1−166814号公報に提案されているような、
スタンド間張力と出側板幅の関係を数式化し、この関係
式に基づき多数スタンドの張力配分を調整することによ
って板幅を制御する方法が知られている。
2. Description of the Related Art Recently, strip width control has been mentioned as an important item in cold rolling from the viewpoint of improving yield, reducing cost and shortening delivery time. Conventionally, as a strip width control method, for example, as proposed in Japanese Patent Publication No. Sho 59-22603, the strip side strip width of a bridle roll installed on the exit side of the final stand is detected, and the strip width between the final stand and the bridle roll is detected. And a method of controlling the plate width by controlling the tension of, as proposed in JP-A-1-166814,
There is known a method of controlling the plate width by formulating the relationship between the tension between stands and the exit side plate width and adjusting the tension distribution of a large number of stands based on this relational expression.

【0003】[0003]

【発明が解決しようとする課題】しかしながら前者の方
法は、最終スタンドの出側にブライドルロールや板幅検
出器を必要とするので設備コストが嵩み、また後者の方
法は、関係式中に因子として圧延速度の項がなく、圧延
速度の変動に伴う板幅の変動については考慮されていな
い。発明者らの研究によれば、冷間圧延の初期及び終期
など、圧延速度が大きく変動する時期にとくに板幅変動
が大きいことが見出されたのであるが、上述したとお
り、とくに後者の板幅制御法では、圧延速度の変動に伴
う板幅の変動に考慮が払われていないので、かかる速度
変更時に的確に追随することできず、その結果板幅は目
標値から大きく外れることになる。
However, the former method requires a bridle roll and a plate width detector on the exit side of the final stand, which increases the equipment cost, and the latter method requires a factor in the relational expression. As there is no term for the rolling speed, the fluctuation of the strip width due to the fluctuation of the rolling speed is not considered. According to the research conducted by the inventors, it has been found that the plate width fluctuation is particularly large when the rolling speed largely changes, such as in the initial and final stages of cold rolling. In the width control method, since the fluctuation of the strip width due to the fluctuation of the rolling speed is not taken into consideration, it is not possible to accurately follow such a speed change, and as a result, the strip width largely deviates from the target value.

【0004】この発明は、上記の問題を有利に解決する
もので、冷間タンデム圧延において圧延速度が大きく変
動した場合であっても、その変動に的確に追随して目標
板幅からのずれを最小限に抑えることができる板幅制御
方法を提案することを目的とする。
The present invention advantageously solves the above-mentioned problem. Even when the rolling speed greatly changes in cold tandem rolling, the deviation from the target strip width is accurately followed by the fluctuation. The purpose is to propose a plate width control method that can be minimized.

【0005】[0005]

【課題を解決するための手段】まずこの発明の解明経緯
について説明する。さて発明者らは、コイル内の板幅変
動について調査したところ、コイルの先端部及び尾端部
と中央部とで板幅が大きく異なることから、板幅変動に
は圧延速度が大きく関与しているのではないかと考え、
板幅変動に及ぼす圧延速度の影響を、スタンド間張力及
びスタンド圧延荷重との関連で調査した。その結果、被
圧延板の板幅は、圧延速度の影響を強く受けるけれど
も、この影響はスタンド間の張力を調整することによっ
て補償できることの知見を得た。この発明は、上記の知
見に立脚するものである。
Means for Solving the Problems First, the process of clarifying the present invention will be described. Now, when the inventors investigated the strip width variation in the coil, the strip width greatly differs between the tip and tail end portions of the coil and the central portion, so the strip speed variation is greatly involved in the strip width variation. I suspect that there is
The effect of rolling speed on strip width variation was investigated in relation to stand tension and stand rolling load. As a result, it was found that the strip width of the rolled sheet is strongly influenced by the rolling speed, but this influence can be compensated by adjusting the tension between the stands. The present invention is based on the above findings.

【0006】すなわちこの発明は、冷間タンデム圧延に
おいて、予め各鋼種及び各板厚毎に、被圧延板の板幅変
動に及ぼす圧延速度及びスタンド間張力の影響を、下記
(1)式に示す関係式として求めておき、圧延速度が変動
した場合に、下記(1) に基づいて、板幅の変動率が所定
の範囲におさまる適正張力の増減比を算出し、この算出
値に従ってスタンド間張力を制御することからなる冷間
タンデム圧延における板幅制御方法である。 記 B=a0 +a1 ×Vr +a2 ×Ts …(1) ここでB :板幅変動率 Vr :圧延速度 Ts :スタンド間張力の増減比 a0,a1,a2 :鋼種及び板厚に応じて定まる定数
That is, according to the present invention, in cold tandem rolling, the influence of the rolling speed and the inter-stand tension on the width variation of the rolled plate is previously determined for each steel type and each plate thickness as follows.
Obtained as the relational expression shown in the equation (1), and when the rolling speed fluctuates, based on the following (1), calculate the increase / decrease ratio of the appropriate tension within which the fluctuation rate of the strip width falls within the predetermined range. It is a strip width control method in cold tandem rolling, which comprises controlling the inter-stand tension according to the calculated value. Note B = a 0 + a 1 × Vr + a 2 × Ts (1) where B: strip width variation rate Vr: rolling speed Ts: increase / decrease ratio of inter-stand tension a 0 , a 1 , a 2 : steel type and sheet thickness Constant determined according to

【0007】以下、この発明を具体的に説明する。さて
発明者らは、板幅変動に及ぼす圧延速度、スタンド間張
力及びスタンド圧延荷重の影響を調査すべく、各鋼種及
び各板厚毎に、 板幅=a0 +a1 ×(圧延速度)+a2 ×(スタン
ド間張力) 板幅=a0 +a1 ×(圧延速度)+a2 ×(スタン
ド圧延荷重) 板幅=a0 +a1 ×(スタンド間張力)+a2 ×
(スタンド圧延荷重) 等についての重回帰式を求め、各要因が板幅変動に及ぼ
す影響について検討した。その結果、とりわけ良好に板
幅を制御できるのは、圧延速度とスタンド間張力をパラ
メータとする次式(1) B=a0 +a1 ×Vr +a2 ×Ts …(1) ここでB :板幅変動率 Vr :圧延速度 Ts :スタンド間張力の増減比 a0,a1,a2 :鋼種及び板厚に応じて定まる定数 で示される関係式に従う場合であることが究明されたの
である。ここに上掲(1) 式における圧延速度Vr とスタ
ンド間張力の増減比Ts との関係を、設定板厚t0 との
関連で簡明に図解すると図1に示すとおりとなる。
The present invention will be described in detail below. Now, in order to investigate the effects of the rolling speed, the inter-stand tension and the stand rolling load on the fluctuation of the strip width, the strip width = a 0 + a 1 × (rolling speed) + a for each steel type and each strip thickness. 2 x (tension between stands) Strip width = a 0 + a 1 x (rolling speed) + a 2 x (rolling load for stand) Strip width = a 0 + a 1 x (tension between stands) + a 2 x
(Stand rolling load) A multiple regression equation was calculated for such factors, and the effect of each factor on plate width fluctuation was examined. As a result, the strip width can be controlled particularly well by the following equation (1) B = a 0 + a 1 × Vr + a 2 × Ts with the rolling speed and the tension between the stands as parameters (1) where B: strip width variation rate Vr: rolling speed Ts: decrease ratio a 0 of interstand tension, a 1, a 2: is the fact the case according to the relational expression represented by the constant determined depending on the steel type and plate thickness are investigated. Here, the relationship between the rolling speed Vr and the increase / decrease ratio Ts of the inter-stand tension in the above equation (1) is simply illustrated in relation to the set plate thickness t 0 , as shown in FIG.

【0008】[0008]

【作用】この発明によれば、たとえばストリップを溶接
しつつ連続して圧延する場合など、定常圧延速度から低
速圧延速度への切り換えを余儀なくされる場合に、圧延
速度Vr の変動に伴い、 (1)式から、目標板幅の変動を
補償するスタンド間張力の増減比Ts を算出し、この算
出値にスタンド間張力を設定することにより、板幅の変
動が回避できるわけである。なおスタンド間張力の増減
比Ts が決まると、設定板厚t0 を満足するスタンド圧
延荷重Pが次式によって決まる。 t0 =f(P・Ts ) 従って、以後Vr での圧延中は、板厚モニター値tを監
視しておき、設定板厚t0 からずれた場合に、スタンド
圧延荷重Pをフィードバック制御することによって板幅
制御を行うこともできる。
According to the present invention, when it is necessary to switch from the steady rolling speed to the low rolling speed, for example, in the case where strips are continuously rolled while welding, the rolling speed Vr fluctuates as ), It is possible to avoid the fluctuation of the strip width by calculating the increase / decrease ratio Ts of the inter-stand tension that compensates for the fluctuation of the target strip width and setting the inter-stand tension to this calculated value. When the increase / decrease ratio Ts of the inter-stand tension is determined, the stand rolling load P that satisfies the set plate thickness t 0 is determined by the following equation. t 0 = f (P · Ts) Therefore, thereafter, during rolling at Vr, the strip thickness monitor value t is monitored, and if the strip thickness deviates from the set strip thickness t 0 , the stand rolling load P is feedback-controlled. It is also possible to control the plate width.

【0009】以上、圧延速度が変動した場合に、その変
動に伴って板幅を一定値に制御する場合について説明し
たが、この発明は、これだけに限るものではなく、同一
コイルにおいて、その前半と後半とで板幅を変更したい
場合にも、圧延速度とスタンド間張力とを適宜に調整す
ることによって、有利に対処することができる。
The case has been described above in which the strip width is controlled to a constant value when the rolling speed fluctuates, but the present invention is not limited to this. Even when it is desired to change the strip width in the latter half, it can be advantageously dealt with by appropriately adjusting the rolling speed and the inter-stand tension.

【0010】次に、5スタンドタンデムミルの最終スタ
ンドにこの発明を適用した場合の制御要領を、図2に基
づいて説明する。なお図3は、制御系を示すブロック図
である。さてロール周速測定器1で測定した圧延速度
が、Vr からVr ′に変動した場合、制御部2におい
て、各鋼種及び各板厚毎に予め求めておいた (1)式から
目標板幅の変動を補償するスタンド間張力の増減比Ts
を算出し、第4及び第5スタンド間の張力がこの算出値
となるように第4スタンドのロール駆動装置3に信号を
発信し、所定の値にスタンド間張力を設定してやれば、
板幅の変動が効果的に回避できるわけである。なお上記
のようにしてスタンド間張力の増減比Ts が決まると、
設定板厚t0を満足させるスタンド圧延荷重Pが次式に
よって決まる。 t0 =f(P・Ts ) 従って、以後Vr での圧延中は、板厚モニターで板厚t
を監視しておき、この板厚tが設定値t0 からずれた場
合には、スタンド圧延荷重Pをフィードバック制御する
だけで板幅制御を行うことができることになる。
Next, the control procedure when the present invention is applied to the final stand of a 5-stand tandem mill will be described with reference to FIG. 3 is a block diagram showing the control system. When the rolling speed measured by the roll peripheral speed measuring device 1 fluctuates from Vr to Vr ', the control unit 2 calculates the target strip width from the formula (1) previously obtained for each steel grade and strip thickness. Ratio of increase / decrease in tension between stands to compensate for fluctuations Ts
Is calculated, and a signal is transmitted to the roll driving device 3 of the fourth stand so that the tension between the fourth and fifth stands becomes the calculated value, and the tension between the stands is set to a predetermined value,
It is possible to effectively avoid fluctuations in plate width. When the increase / decrease ratio Ts of the inter-stand tension is determined as described above,
The stand rolling load P that satisfies the set plate thickness t 0 is determined by the following equation. t 0 = f (P · Ts) Therefore, thereafter, during rolling at Vr, the thickness t is measured by the thickness monitor.
If the sheet thickness t deviates from the set value t 0 , the sheet width control can be performed only by feedback-controlling the stand rolling load P.

【0011】以上、この発明の制御方法を、5スタンド
タンデムミルの最終スタンドに適用した場合について主
に説明したが、この発明はそれだけに限るものではな
く、タンデムミルの全スタンドに適用することもでき
る。なお各板厚毎に、関係式(1) を求める代わりに、各
鋼種毎に板厚による影響係数を求めおき、これを (1)式
に加えて、スタンド間張力制御量を求めることもでき
る。
Although the control method of the present invention has been mainly described above in the case of being applied to the final stand of a 5-stand tandem mill, the present invention is not limited thereto and can be applied to all stands of a tandem mill. .. Instead of calculating the relational expression (1) for each plate thickness, it is also possible to calculate the influence coefficient due to the plate thickness for each steel type and add this to the formula (1) to calculate the tension control amount between stands. ..

【0012】次に、SPCC(成分 C:0.025 %, Si:0.
02%, Mn:0.015 %, P:0.002%, S:0.0014%)
を、板幅:1200mm, 板厚:0.5 mmに圧延する場合の関係
式の算出要領について説明する。図4に、圧延速度がそ
れぞれ 200m/min, 500m/min, 800m/min の各場合に、ス
タンド間張力を基準値より10%、20%増加させた場合の
板幅変動値について調べた結果の一例を示す。上記のよ
うな実験を27例について行い、速度及び張力条件を取り
込んだ板幅に関する重回帰分析を行った。
Next, SPCC (component C: 0.025%, Si: 0.
02%, Mn: 0.015%, P: 0.002%, S: 0.0014%)
The following will explain how to calculate the relational expression when rolling to a plate width of 1200 mm and a plate thickness of 0.5 mm. Fig. 4 shows the results of examination of strip width variation values when the inter-stand tension is increased by 10% and 20% from the standard value at rolling speeds of 200 m / min, 500 m / min, and 800 m / min, respectively. An example is shown. The above experiment was performed for 27 cases, and multiple regression analysis was performed on the plate width including the speed and tension conditions.

【0013】上記の重回帰分析結果によれば、上掲した
SPCC(板幅:1200mm, 板厚:0.5 mm)の板幅変動に及ぼ
す圧延速度及びスタンド間張力の影響は、図4の如く
で、これを関係式で表すと、次式 B1 = 3.911− 0.002×Vr − 0.066×Ts のとおりとなる。なお上記の重回帰式における重相関係
数は 0.8111 である。
According to the above multiple regression analysis results,
The effect of the rolling speed and the tension between stands on the width variation of SPCC (sheet width: 1200 mm, sheet thickness: 0.5 mm) is as shown in Fig. 4. This can be expressed by a relational expression as follows: B1 = 3.911-0.002 × Vr −0.066 × Ts. The multiple correlation coefficient in the above multiple regression equation is 0.8111.

【0014】[0014]

【実施例】上記したところと同じ成分組成になるSPCC
(板幅:1800mm, 板厚:0.7 mm)の大径コイルを、板
幅:1200mm, 板厚:0.5 mmに連続圧延しつつ、多数の小
径コイルに分割する圧延を行った。定常状態における圧
延速度Vr は 800mm/min、またシャーカットの際の圧延
速度Vr ′は 200mm/minとした。上記の連続圧延におい
て、前掲図2に示した要領に従って板幅制御を行った場
合の板幅変化について調べた結果を、かかる板幅制御を
行わない従来法に従った場合と比較して図5に示す。な
お図5中、(a)は圧延速度、(b)は従来法に従う制
御結果、(c)はこの発明法に従う制御結果である。ま
た圧延速度及びスタンド間張力は制御の設定値であり、
板幅は実測値(光学式板幅計)である。
[Example] SPCC having the same composition as described above
A large-diameter coil with a plate width of 1800 mm and a plate thickness of 0.7 mm was continuously rolled into a plate width of 1200 mm and a plate thickness of 0.5 mm, and was divided into a number of small-diameter coils. The rolling speed Vr in the steady state was 800 mm / min, and the rolling speed Vr 'during shear cutting was 200 mm / min. In the above continuous rolling, the results of examining the change in strip width when the strip width was controlled according to the procedure shown in FIG. 2 above were compared with the results obtained by the conventional method in which strip width control was not performed. Shown in. In FIG. 5, (a) shows the rolling speed, (b) shows the control result according to the conventional method, and (c) shows the control result according to the present invention method. The rolling speed and the tension between stands are set values for control.
The plate width is an actually measured value (optical plate width meter).

【0015】同図より明らかなように、従来法では圧延
速度が低下した場合に2.3mmもの板幅変動があったのに
対し、この発明に従う板幅制御を行った場合には、板幅
変動を 0.4mmまで低減することができた。
As is clear from the figure, in the conventional method, the plate width fluctuates by as much as 2.3 mm when the rolling speed is reduced, whereas when the plate width control according to the present invention is performed, the plate width fluctuation is caused. Could be reduced to 0.4 mm.

【0016】[0016]

【発明の効果】かくしてこの発明によれば、冷間タンデ
ム圧延において、圧延速度の変更の如何にかかわらず、
コイル内の板幅のばらつきを大幅に低減することがで
き、また同一コイルにおける板幅変更の要求に対しても
有利に対処することができる。さらにこの発明は、圧延
ラインの上流側の情報だけで仕上げ幅を制御できる利点
もある。
As described above, according to the present invention, in the cold tandem rolling, regardless of the change of the rolling speed,
It is possible to greatly reduce the variation of the plate width in the coil, and it is possible to advantageously deal with the demand for changing the plate width in the same coil. Further, the present invention has an advantage that the finishing width can be controlled only by the information on the upstream side of the rolling line.

【図面の簡単な説明】[Brief description of drawings]

【図1】圧延速度Vr 及びスタンド間張力の増減比Ts
の関係を設定板厚t0 をパラメータとして示したグラフ
である。
1] Rolling speed Vr and increase / decrease ratio Ts of tension between stands
6 is a graph showing the relationship of the above-mentioned relationship using the set plate thickness t 0 as a parameter.

【図2】この発明を、5スタンドタンデムミルの最終ス
タンドに適用した場合の制御要領説明図である。
FIG. 2 is an explanatory view of a control procedure when the present invention is applied to a final stand of a 5-stand tandem mill.

【図3】制御系を示すブロック図である。FIG. 3 is a block diagram showing a control system.

【図4】板幅変動に及ぼすスタンド間張力の影響を圧延
速度をパラメータとして示したグラフである。
FIG. 4 is a graph showing the effect of inter-stand tension on strip width variation, with the rolling speed as a parameter.

【図5】この発明法及び従来法に従って連続冷間圧延を
行った場合における、圧延速度の変化に伴う板幅の変動
代を比較して示したグラフである。
FIG. 5 is a graph showing a comparison of variations in strip width with changes in rolling speed when continuous cold rolling is performed according to the method of the present invention and the conventional method.

【符号の説明】[Explanation of symbols]

1 ロール周速測定器 2 制御部 3 ロール駆動装置 1 Roll peripheral speed measuring device 2 Control unit 3 Roll driving device

───────────────────────────────────────────────────── フロントページの続き (72)発明者 黒田 茂 岡山県倉敷市水島川崎通1丁目(番地な し) 川崎製鉄株式会社水島製鉄所内 (72)発明者 太田 範男 岡山県倉敷市水島川崎通1丁目(番地な し) 川崎製鉄株式会社水島製鉄所内 (72)発明者 手柴 東光 岡山県倉敷市水島川崎通1丁目(番地な し) 川崎製鉄株式会社水島製鉄所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shigeru Kuroda Inventor, Mizushima Kawasaki-dori, Kurashiki-shi, Okayama Prefecture 1-chome (No address) Inside the Mizushima Steel Works, Kawasaki Steel Co., Ltd. (72) Norio Ota, Mizushima-Kawasaki-dori, Kurashiki-shi, Okayama Prefecture Chome (No house number) Inside Kawashima Steel Co., Ltd. Mizushima Works (72) Inventor Toko Teshiba 1, Kawashima-dori Mizushima Kawasaki Dori, Okayama Prefecture (No house) Inside Kawashima Steel Co., Ltd. Mizushima Works

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 冷間タンデム圧延において、予め各鋼種
及び各板厚毎に、被圧延板の板幅変動に及ぼす圧延速度
及びスタンド間張力の影響を、下記(1) 式に示す関係式
として求めておき、圧延速度が変動した場合に、下記
(1) に基づいて、板幅の変動率が所定の範囲におさまる
適正張力の増減比を算出し、この算出値に従ってスタン
ド間張力を制御することを特徴とする冷間タンデム圧延
における板幅制御方法。 記 B=a0 +a1 ×Vr +a2 ×Ts …(1) ここでB :板幅変動率 Vr :圧延速度 Ts :スタンド間張力の増減比 a0,a1,a2 :鋼種及び板厚に応じて定まる定数
1. In cold tandem rolling, the influence of the rolling speed and the inter-stand tension on the strip width variation of the strip to be rolled is preliminarily expressed for each steel type and each strip thickness as a relational expression shown in the following equation (1). In advance, if the rolling speed fluctuates, the following
Based on (1), calculate the increase / decrease ratio of the appropriate tension within which the fluctuation rate of the strip width falls within a predetermined range, and control the inter-stand tension according to this calculated value to control strip width in cold tandem rolling. Method. Note B = a 0 + a 1 × Vr + a 2 × Ts (1) where B: strip width variation rate Vr: rolling speed Ts: increase / decrease ratio of inter-stand tension a 0 , a 1 , a 2 : steel type and sheet thickness Constant determined according to
JP3236365A 1991-09-17 1991-09-17 Method for controlling width in cold tandem rolling Pending JPH0576916A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3236365A JPH0576916A (en) 1991-09-17 1991-09-17 Method for controlling width in cold tandem rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3236365A JPH0576916A (en) 1991-09-17 1991-09-17 Method for controlling width in cold tandem rolling

Publications (1)

Publication Number Publication Date
JPH0576916A true JPH0576916A (en) 1993-03-30

Family

ID=16999720

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3236365A Pending JPH0576916A (en) 1991-09-17 1991-09-17 Method for controlling width in cold tandem rolling

Country Status (1)

Country Link
JP (1) JPH0576916A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003001311A (en) * 2001-06-21 2003-01-07 Nisshin Steel Co Ltd Plate width control method in cold tandem rolling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003001311A (en) * 2001-06-21 2003-01-07 Nisshin Steel Co Ltd Plate width control method in cold tandem rolling

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