JPS6297711A - Edge drop preventing method in rolling - Google Patents
Edge drop preventing method in rollingInfo
- Publication number
- JPS6297711A JPS6297711A JP60238511A JP23851185A JPS6297711A JP S6297711 A JPS6297711 A JP S6297711A JP 60238511 A JP60238511 A JP 60238511A JP 23851185 A JP23851185 A JP 23851185A JP S6297711 A JPS6297711 A JP S6297711A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- rolling
- stock
- edge
- input device
- 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
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
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/40—Control of flatness or profile during rolling of strip, sheets or plates using axial shifting of the rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野１
本発明は、鉄鋼、アルミなどの薄板、厚板等、金属板の
圧延加工における板プロフイル制御方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application 1) The present invention relates to a method for controlling a plate profile in the rolling process of metal plates such as thin plates and thick plates made of steel, aluminum, etc.
（従来の技術）
金属材料の圧延加工においては、圧延材のエツジ部の板
厚が減少するエツジドロップという問題がある。これは
、ロールの弾性変形（ロールの偏平）が圧延材接触部端
で急激に変化することＫよるものである。(Prior Art) In the rolling process of metal materials, there is a problem called edge drop, in which the thickness of the edge portion of the rolled material decreases. This is because the elastic deformation of the roll (flattening of the roll) changes rapidly at the end of the rolling material contact area.
エツジ位置でのロールの急激な変形を緩和すればエツジ
ドロップを小さくすることができるが、作業ロールをシ
フトさせる機能を有する設備において被圧延材のエツジ
ドロップを防止する手段としては次の方法が知られてい
る。The edge drop can be reduced by alleviating the rapid deformation of the roll at the edge position, but the following method is known as a means of preventing edge drop of the rolled material in equipment that has the function of shifting the work rolls. It is being
（１）作業ロールの片端部をテーノぞ一状に研摩し、チ
ーＡ一部が被圧延材の板端部に一致するように作業ロー
ルをシフトする方法（特開昭５５−７７９０３号公報な
どＪ。(1) A method in which one end of the work roll is ground into a teno groove shape and the work roll is shifted so that a part of the chi A coincides with the end of the plate of the material to be rolled (Japanese Unexamined Patent Publication No. 55-77903, etc.) J.
（２） 更にこうした片端テーパーロールにベンディ
ング装置で曲げｔ加え、効果拡大を狙う方法（特開昭５
４−１１８３６４号公報など］。(2) Furthermore, a method of applying bending t to such one-end tapered roll using a bending device to increase the effect (Japanese Patent Laid-open No. 5
4-118364, etc.].
これらは、いずれもエツジ部に対し、ロール形状を逃が
すように加工しておくことでエツジドロップを低減する
も°のである。In all of these, edge drops can be reduced by processing the edges so that the roll shape escapes.
（発明が解決しようとする問題点Ｊ
しかし、いずれの場合もあらかじめロールの片端部をテ
ーノぞ一状に加工しておく必要があり、ロールの研摩作
業が煩雑になると同時に、圧延の進行に伴うロール摩耗
によりチーＡ一部の形状が乱れ、効果が薄れて来る。(Problem to be Solved by the Invention J) However, in either case, it is necessary to process one end of the roll in advance into a Teno groove shape, which makes the polishing work of the roll complicated, and at the same time, Due to roll wear, the shape of a part of the chi A becomes disordered, and the effect becomes less effective.
本発明は、こうした一連の不具合を解消すべく、ロール
の摩耗ハターンに着目し、ロールをテーパー状等の特殊
な形状に予め加工する必要なく、かつ圧延の進行ととも
に効果が薄れずに被圧延材のエツジドロップを効果的に
低減する方法を実現するものである。In order to eliminate a series of such problems, the present invention focuses on the wear pattern of the rolls, and the present invention has been developed to eliminate the need for pre-processing the rolls into a special shape such as a tapered shape, and to prevent the rolling process from weakening as the rolling progresses. This method realizes a method for effectively reducing edge drops.
（間順点を解決するための手段）
本発明は、上下作業ロールを軸方向にシフトさせて板材
を圧延するにあたり、圧延材の圧延時にロールに生じる
凹部の位置を求め、その次の圧延材の両エツジ部に前の
圧延材圧延時の上下ロールの凹部の一方をそれぞれ一致
させることを特徴とするエツジドロップ防止方法である
。(Means for Solving Interval Points) In the present invention, when rolling a plate material by shifting the upper and lower work rolls in the axial direction, the position of a recess formed in the roll during rolling of the rolled material is determined, and the next rolled material is This is an edge drop prevention method characterized by aligning one of the recesses of the upper and lower rolls during rolling of the previous rolled material with both edge portions of the roll.
（作用）
本発明は、ロール摩耗及び熱膨張の形態が丁度部分的に
テーパー状になるという現像に着目し、これを利用する
ことで何ら特殊な形状（テーパぞ一状」にロールを研削
しておかなくてもエツジドロップを低減できるというこ
とに基いている。(Function) The present invention focuses on development in which the form of roll wear and thermal expansion becomes exactly partially tapered, and by utilizing this, the roll can be ground into a special shape (tapered shape). This is based on the fact that edge drop can be reduced without having to keep the edge drop.
以下、本発明を説明する。The present invention will be explained below.
通常ロールの摩耗Ａターンは第１図に示す様に圧延材エ
ツ、ジ部付近全ピークとした形となる。これは、エツジ
部のメタルフローが板帯央部のそれと異なるため（ある
いは熱間圧延の場合、板エツジ部の温度が板帯央部に比
べて低く、エツジ部でロールに対する負荷が高くなるた
め］、更に、被圧延材から受ける熱によるロールの膨張
量が板帯央部の方が板端部より大きくなるためと考えら
れる。Normally, the wear A-turn of a roll has a peak around the edges and edges of the rolled material, as shown in Figure 1. This is because the metal flow at the edge is different from that at the center of the strip (or in the case of hot rolling, the temperature at the edge of the strip is lower than that at the center of the strip, resulting in a higher load on the roll at the edge). ], and furthermore, it is thought that this is because the amount of expansion of the roll due to the heat received from the material to be rolled is greater at the center of the strip than at the ends of the strip.
この現象を利用して、エツジドロップを低減させる目的
で、予め作業ロールにチー、ｅ−状の形状を作る為に、
例えば次の方法によるロールシフトを実施する。Utilizing this phenomenon, in order to reduce edge drop, in order to create a chi-shaped or e-shaped shape on the work roll in advance,
For example, a roll shift is performed using the following method.
ロール組替からロール組替の間に圧延する材料の内、最
も幅の狭い材料に着目する。その幅を１）ｍｉｎ、
更に設備上定まるロールシフトＪｌｉＳとする。今、ロ
ールを替えてｉ−１番めに圧延する材料の幅ヲｂｉ−・
１とすると、ｉ−１めの圧延時に実施するシフト量Ｗａ
Ｈ，１は次式で求まる。Among the materials rolled between roll changes, focus is on the narrowest material. Its width is 1) min,
Furthermore, it is assumed that the roll shift is JliS determined by the equipment. Now change the rolls and change the width of the material to be rolled i-1st.
1, the shift amount Wa executed during the i-1th rolling
H,1 is determined by the following equation.
ＷＳ；−ｓ＝ （ｂｍｉｎ＋ｓ ｌ−ψｉ −＋（ただ
し、ＷＳｉ−！≧０）
この事は、上下ロールのそれぞれ同一部が仮エツジに対
し合う様にして２き、ロール摩耗、膨張で部分的にテー
パー状の形状を予め作っておくことを意味する。WS; -s= (bmin+s l-ψi -+ (However, WSi-!≧0) This means that the same parts of the upper and lower rolls should fit against the temporary edge. This means creating a tapered shape in advance.
第１図（ａ）に材料幅ｂｉ−１の材料を圧延した後にｂ
ｉの幅の材料を圧延しようとするときの実施イメージを
示す。この場合、すでに作った部分的テーパー形状を利
用して材料のエツジドロップを低減するメカニズムを第
１図（ｂ）に示す。Figure 1 (a) shows that after rolling a material with a material width bi-1, b
An implementation image is shown when attempting to roll a material with a width of i. In this case, a mechanism for reducing the edge drop of the material by utilizing the already created partially tapered shape is shown in FIG. 1(b).
当該材Ｃｂｉ幅の材料）圧延までに生じた部分的テーノ
七一部をオンラインで実測あるいは扁精匿の予測計算で
求めておき、当該材圧姑時に、当該材エツジ部にこのテ
ーノ七一部が一致する様にシフトさせ圧延するのである
。(Material of the material Cbi width)) Obtain the partial tenor 7 part generated before rolling online by actual measurement or prediction calculation of flattening, and when the material is rolled down, apply this tenor 7 part to the edge part of the material. It is shifted and rolled so that they match.
（実施列］
ホットストリップミルの仕上タンデム圧延機において本
発明を実機化した場合のシステム構成を第３図に示す。(Implementation row) FIG. 3 shows a system configuration in which the present invention is implemented in a finishing tandem rolling mill of a hot strip mill.
これはタンデム圧延機のｉスタンドについて示したもの
である。This is shown for the i-stand of a tandem rolling mill.
更に圧延実績及びロール径情報入力装置８から得られる
ロール情報と併わせてロールプロフィル演算装置７に入
力してロールと板エツジの接触する部分の局部プロフィ
ルを精度良く求める。この結果を基に最適作業ロールシ
フト量演算装置９で次材圧延情報入力装置１２、及びス
ケジュール内情報入力装置１３から得られる材料幅に関
する情報より最適シフト量を決定する。こうして求めた
シフト量は次材プリセット用バッファー１０に格納され
、次材圧延直前にロールシフト装置１１によシ実行され
る。Furthermore, the rolling results and the roll information obtained from the roll diameter information input device 8 are inputted to the roll profile calculation device 7 to accurately determine the local profile of the contact portion between the roll and the plate edge. Based on this result, the optimum work roll shift amount calculating device 9 determines the optimum shift amount from the information regarding the material width obtained from the next material rolling information input device 12 and the schedule information input device 13. The shift amount determined in this manner is stored in the next material presetting buffer 10, and is executed by the roll shift device 11 immediately before rolling the next material.
こうした一連の動作をロール組替から組替までの間実行
する。尚、ロール替に際しては、ロールプロフィルをこ
れから組み込むロールと一致する様初期化しておく。This series of operations is executed from role reshuffling to role reshuffling. Note that when changing roles, the role profile is initialized to match the role that will be installed from now on.
本発明をホットストリップミル仕上圧延作業に適用した
列を第４図に示す。A train in which the present invention is applied to a hot strip mill finish rolling operation is shown in FIG.
図中の破線は片台形ロール、実線は水洗によりほぼ同一
材料条件の下でエツジドロップを低減することで圧延材
の低クラウン化を図った比較を示す。圧延本数が多くな
る程（ロールを組み替えて４０〜５０本以降で］、片台
形ロール使用に比べ水洗の方がエツジドロップ低減によ
る低クラウン化は著しい。The broken line in the figure shows a single trapezoidal roll, and the solid line shows a comparison in which the edge drop was reduced under almost the same material conditions by washing with water, thereby reducing the crown of the rolled material. As the number of rolls increases (after 40 to 50 rolls are rolled), the crown reduction due to edge drop reduction is more remarkable when washing with water compared to using a single trapezoidal roll.
（発明の効果）
この様に、水洗によれば何ら特殊なロール形状を必要と
することなくエツジドロップが低減でき、これによる圧
延材の低クラウンが達成できる。(Effects of the Invention) As described above, by washing with water, edge drops can be reduced without requiring any special roll shape, and thereby a low crown of the rolled material can be achieved.
第１図及び第２図は本発明を説明するためのロール摩耗
とロールシフトの関係を示す図、第３図は本発明を適用
した圧延制御ブロック図、第４図は本発明による効果全
従来法と比較して示す図である。
１・・・圧延材、２・・・作業ロール、３・・・幅計、
４・・・ｆｆｌ＆計、５・・・Ｎ、計、６・・・ロード
セル、７・・・ロールプロフィル演算装置、８・・・圧
延実績及びロール径情報入力装置、９・・最適作業ロー
ルシフト量演算装置、１０・・・次材プリセット用ノ々
ツファ一、１１・・・作業ロールシフト装置、１２・・
・次材圧延情報入力装置、１３・・・スケジュール内情
報入力装置。
代理人 弁理士 秋 沢 政 光他２名
〜 的
α） ＼
抹
＼Ｎｎ 寸ｔｎ （−０ｂ ００ Ｇ−ｓ −（’Ｊ
ｒｒｓ自発手続補正書
昭和６０年１１月２８日
、Ｌ−ｆ1 and 2 are diagrams showing the relationship between roll wear and roll shift for explaining the present invention, FIG. 3 is a rolling control block diagram to which the present invention is applied, and FIG. 4 is a diagram showing the effects of the present invention over the conventional FIG. 1... Rolled material, 2... Work roll, 3... Width meter,
4...ffl & total, 5...N, total, 6...load cell, 7...roll profile calculation device, 8...rolling record and roll diameter information input device, 9...optimum work roll shift Quantity calculating device, 10... Nonotufa for presetting next material, 11... Work roll shift device, 12...
- Next material rolling information input device, 13... schedule information input device. Agent Patent attorney Masamitsu Aki Sawa and 2 others ~ 目α）
rrs voluntary procedure amendment November 28, 1985, L-f
Claims (1)
延するにあたり、圧延材の圧延時にロールに生じる凹部
の位置を求め、その次の圧延材の両エツジ部に前の圧延
材圧延時の上下ロールの凹部の一方をそれぞれ一致させ
ることを特徴とするエツジドロツプ防止方法。(1) When rolling a plate material by shifting the upper and lower work rolls in the axial direction, find the position of the recess that occurs in the roll during rolling of the rolled material, and then apply the position of the concavity created in the roll during rolling of the rolled material to both edges of the next rolled material. An edge drop prevention method characterized by aligning one of the recesses of the upper and lower rolls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60238511A JPS6297711A (en) | 1985-10-24 | 1985-10-24 | Edge drop preventing method in rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60238511A JPS6297711A (en) | 1985-10-24 | 1985-10-24 | Edge drop preventing method in rolling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6297711A true JPS6297711A (en) | 1987-05-07 |
| JPH0312965B2 JPH0312965B2 (en) | 1991-02-21 |
Family
ID=17031334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60238511A Granted JPS6297711A (en) | 1985-10-24 | 1985-10-24 | Edge drop preventing method in rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6297711A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107127217A (en) * | 2016-02-29 | 2017-09-05 | 鞍钢股份有限公司 | Feedback hysteresis control method for edge thinning of cold-rolled silicon steel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5577903A (en) * | 1978-12-08 | 1980-06-12 | Kawasaki Steel Corp | Rolling method for shape control |
| JPS59110402A (en) * | 1982-12-06 | 1984-06-26 | エス・エム・エス・シユレ−マン−ジ−マ−ク・アクチエンゲゼルシヤフト | Method and device for rolling strip |
-
1985
- 1985-10-24 JP JP60238511A patent/JPS6297711A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5577903A (en) * | 1978-12-08 | 1980-06-12 | Kawasaki Steel Corp | Rolling method for shape control |
| JPS59110402A (en) * | 1982-12-06 | 1984-06-26 | エス・エム・エス・シユレ−マン−ジ−マ−ク・アクチエンゲゼルシヤフト | Method and device for rolling strip |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107127217A (en) * | 2016-02-29 | 2017-09-05 | 鞍钢股份有限公司 | Feedback hysteresis control method for edge thinning of cold-rolled silicon steel |
| CN107127217B (en) * | 2016-02-29 | 2019-12-13 | 鞍钢股份有限公司 | Feedback hysteresis control method for edge thinning of cold-rolled silicon steel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0312965B2 (en) | 1991-02-21 |
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