JP2003001301A - Rough rolling method for steel plate - Google Patents
Rough rolling method for steel plateInfo
- Publication number
- JP2003001301A JP2003001301A JP2001188315A JP2001188315A JP2003001301A JP 2003001301 A JP2003001301 A JP 2003001301A JP 2001188315 A JP2001188315 A JP 2001188315A JP 2001188315 A JP2001188315 A JP 2001188315A JP 2003001301 A JP2003001301 A JP 2003001301A
- Authority
- JP
- Japan
- Prior art keywords
- width
- rough rolling
- steel sheet
- rolling
- steel plate
- 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
Landscapes
- Metal Rolling (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、最適なエッジング
量に制御することができる鋼板の粗圧延方法に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rough rolling method for a steel sheet which can be controlled to an optimum edging amount.
【０００２】[0002]
【従来の技術】鋼板を粗圧延する場合、鋼板の平面形状
（矩形度）は歩留上重要な要素である。そして従来か
ら、その造り込みは粗圧延でのエッジング（端部成形）
で決まることが報告されており、それらを調整しつつ粗
圧延が行われている。2. Description of the Related Art When a steel sheet is roughly rolled, the planar shape (rectangularity) of the steel sheet is an important factor in yield. And conventionally, the edging is edging by rough rolling (end forming)
It has been reported that rough rolling is performed while adjusting them.
【０００３】しかしながら従来、平面形状の管理は、オ
ペレーターの目視検査によるエッジング量のコントロー
ルがベースとなっているため、クロップと称される異形
部の寸法や形状を判断する際に個人差によるバラツキが
大きく一定条件下で確実に管理することができないとい
う問題点があった。また、エッジング量を一定として巾
出しを行なっていたため、巾出し完了後に必要とされる
エッジング量が得られずに最適なエッジングができない
という問題点があった。However, conventionally, the management of the planar shape is based on the control of the edging amount by the visual inspection by the operator, so that the variation due to the individual difference when judging the size and shape of the irregular shape portion called a crop. There was a problem that it could not be managed reliably under large and constant conditions. Moreover, since the edging amount is constant and the edging is performed, there is a problem that the edging amount required after completion of the edging cannot be obtained and optimum edging cannot be performed.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記のような
従来の問題点を解決して、鋼板の圧延巾を精度よく測定
し、また平面形状の管理もバラツキを生じることなく確
実に管理することで、最適なエッジング量に制御するこ
とができる鋼板の粗圧延方法を提供することを目的とし
て完成されたものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, accurately measures the rolled width of a steel sheet, and reliably manages the planar shape without causing variations. Thus, the present invention has been completed for the purpose of providing a rough rolling method for a steel sheet which can be controlled to an optimum edging amount.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明の鋼板の粗圧延方法は、被加工物で
ある鋼板を粗圧延機によって所定巾まで圧延後、エッジ
ャーにより平面形状を調整し、次いで仕上圧延機によっ
て所定厚さまで圧延するようにした鋼板の粗圧延方法に
おいて、前記粗圧延機で最終圧延する直前に鋼板の巾を
画像処理手段により測定し、得られた測定値に基づいて
前記エッジャーの加工巾を算出し、粗圧延機の最終圧延
条件を設定するようにしたことを特徴とするものであ
る。A rough rolling method for a steel sheet according to the present invention made to solve the above-mentioned problems is a method of rolling a steel sheet as a workpiece to a predetermined width by a rough rolling machine and then flattening it with an edger. In the rough rolling method of the steel sheet so as to be rolled to a predetermined thickness by the finishing rolling mill, the width of the steel sheet is measured by the image processing means immediately before the final rolling by the rough rolling machine, and the obtained measurement value is obtained. Based on the above, the working width of the edger is calculated, and the final rolling condition of the rough rolling mill is set.
【０００６】また、画像処理手段により測定した測定値
を基にしてエッジング量および巾戻り量を算出し、これ
らのデータから算出した圧延条件に基づいて粗圧延機で
最終圧延を行い巾出し完了後の狙い巾を出すようにした
ものを請求項２にかかる発明とし、鋼板の巾を、エッジ
ャーと粗圧延機の間に設けた画像処理手段により測定す
るようにしたものを請求項３にかかる発明とする。Further, the edging amount and the width return amount are calculated based on the measurement values measured by the image processing means, and the final rolling is performed by the rough rolling machine based on the rolling conditions calculated from these data, and after the width drawing is completed. The invention according to claim 2 is such that the target width of the steel sheet is obtained, and the width of the steel sheet is measured by an image processing means provided between the edger and the rough rolling machine. And
【０００７】[0007]
【発明の実施の形態】以下に、図面を参照しつつ本発明
の好ましい実施の形態を示す。図１は、鋼板の圧延工程
を示す概略図であって、図中１は被加工物である鋼板Ｗ
を加工可能な温度域まで加熱するための加熱炉、２は鋼
板Ｗの両サイド部を所定寸法に縮めるためのエッジャ
ー、３は鋼板Ｗを所定巾まで拡げるための粗圧延機、４
は鋼板Ｗを所定厚さまで延ばすための仕上圧延機であ
り、以上の構成は従来の圧延工程のライン構成と基本的
に同じである。なお５は、粗圧延完了後の鋼板Ｗを仕上
圧延工程へ移す際に鋼板Ｗの方向を９０°方向変換させ
るための回転手段である。BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing a rolling process of a steel plate, in which 1 is a steel plate W which is a workpiece.
Furnace for heating the steel plate to a temperature range where it can be processed, 2 is an edger for shrinking both side portions of the steel plate W to a predetermined size, 3 is a rough rolling machine for expanding the steel plate W to a predetermined width, 4
Is a finish rolling machine for extending the steel plate W to a predetermined thickness, and the above configuration is basically the same as the line configuration of the conventional rolling process. In addition, 5 is a rotating means for changing the direction of the steel sheet W by 90 ° when transferring the steel sheet W after the rough rolling to the finish rolling step.
【０００８】このような圧延ラインにおいて、被加工物
である鋼板Ｗは粗圧延機３によって所定巾まで圧延され
た後、エッジャー２により巾長さが調整され、次いで仕
上圧延機４によって所定厚さまで圧延されることとな
る。この場合の鋼板Ｗの流れは、図２に示されるとおり
であり、第１段階として、鋼板Ｗを粗圧延機３を数回パ
スさせることで巾が決められ、次いで第２段階で仕上圧
延機４を数回パスさせることで板厚が決められる。In such a rolling line, a steel plate W as a work is rolled by a rough rolling mill 3 to a predetermined width, then adjusted in width by an edger 2 and then finished by a finishing rolling machine 4 to a predetermined thickness. It will be rolled. The flow of the steel sheet W in this case is as shown in FIG. 2, and as the first step, the width is determined by passing the steel sheet W through the rough rolling mill 3 several times, and then in the second step, the finish rolling mill. The plate thickness can be determined by making 4 passes several times.
【０００９】そして本発明では、前記粗圧延機３で最終
圧延する直前に鋼板Ｗの巾を、例えばＣＣＤカメラ等の
画像処理手段６により測定し、得られた測定値に基づい
て前記エッジャー２の加工巾および粗圧延機３の最終圧
延条件を設定するようにしてある。即ち、鋼板Ｗの巾を
画像処理手段６により測定することで、従来のようなサ
イドガイドによる場合の測定誤差等を無くすとともに、
最大巾のみならず全体にわたって巾を正確に測定するの
である。しかも、この測定を粗圧延機３で最終圧延する
直前に行い、かつこの測定値を基にエッジャー２の加工
巾を算出し、粗圧延機３の最終圧延条件を設定すること
で巾出し完了後に適切なエッジング量を確保するのであ
る。In the present invention, the width of the steel sheet W is measured by the image processing means 6 such as a CCD camera immediately before the final rolling by the rough rolling mill 3, and the edger 2 of the edger 2 is measured based on the measured value. The working width and the final rolling conditions of the rough rolling mill 3 are set. That is, by measuring the width of the steel plate W by the image processing means 6, the measurement error and the like in the case of the conventional side guide can be eliminated, and
Not only the maximum width, but the entire width is measured accurately. Moreover, this measurement is performed immediately before the final rolling by the rough rolling mill 3, and the working width of the edger 2 is calculated based on this measurement value, and the final rolling conditions of the rough rolling mill 3 are set to complete the width drawing. It secures an appropriate edging amount.
【００１０】更に詳述すれば、巾出し完了後の狙い巾の
計算は成品の設計時に決まる狙い巾、エッジング量、巾
戻り量等により決まるもので、従来はそれぞれの値が圧
延前に決定されていたが、本発明者は粗圧延機３で最終
圧延する直前、かつ正確なデータを用いて設定すればよ
り適正なエッジング量に制御することができるとの知見
に基づいて本願発明を完成したものである。More specifically, the calculation of the target width after the completion of the width setting is determined by the target width, the edging amount, the width return amount, etc., which are determined at the time of designing the product. Conventionally, each value is determined before rolling. However, the present inventor has completed the present invention based on the finding that a more appropriate edging amount can be controlled immediately before final rolling by the rough rolling mill 3 and by setting using accurate data. It is a thing.
【００１１】具体的には、図３に示されるように、画像
処理手段により測定した測定値を基にしてエッジング量
および巾戻り量を算出し、これらのデータから算出した
圧延条件に基づいて粗圧延機で最終圧延を行い巾出し完
了後の狙い巾を出すようにすればよい。なお、鋼板の巾
を、エッジャーと粗圧延機の間に設けた画像処理手段６
により測定するようにするのが時間的ロスがなく好まし
い。Specifically, as shown in FIG. 3, the edging amount and the width reversal amount are calculated based on the measurement values measured by the image processing means, and the roughing is calculated based on the rolling conditions calculated from these data. The final rolling may be performed with a rolling mill so that the target width is obtained after the completion of the width drawing. In addition, the width of the steel plate is provided between the edger and the rough rolling mill, image processing means 6
It is preferable that the measurement is carried out by means of no time loss.
【００１２】また、圧延を行った場合には、鋼板の端部
においてクロップと称される異形部１０が形成される
が、ロスを最小にする必要性から、図４に示されるよう
な小さな異形部１０を形成し、これをエッジングするの
が好ましい。しかしながら、従来においては、図５に示
されるような長い異形部１０が形成されたり、図６に示
されるような端部で幅格落ちした異形部１０が形成され
たりしてエッジング量が不適切なものであった。そこ
で、本発明者は長さ方向のエッジングと異形部１０の間
には最適点が存在し、その最適点は長さ方向のエッジン
グ前の巾偏差によって異なるとの知見の基に、粗圧延機
で最終圧延する前に巾偏差を測定し、その測定値から長
さ方向のエッジングの前の巾偏差を正確に測定し、これ
に基づいて長さ方向のエッジング量を算出して巾出しを
行なうこととした。これにより、図４に示されるような
適切な異形部１０となり、歩留りを著しく向上させるこ
とが可能になった。Further, when rolling is performed, a deformed portion 10 called a crop is formed at the end of the steel sheet, but since it is necessary to minimize loss, a small deformed portion as shown in FIG. 4 is formed. It is preferable to form part 10 and to edge it. However, in the prior art, a long deformed portion 10 as shown in FIG. 5 is formed, or a deformed portion 10 whose width is reduced as shown in FIG. It was something. Therefore, the present inventor has found that there is an optimum point between the edging in the length direction and the deformed portion 10, and the optimum point is different depending on the width deviation before edging in the length direction. Width deviation is measured before the final rolling with, the width deviation before edging in the length direction is accurately measured from the measured value, and based on this, the edging amount in the length direction is calculated and the width is determined. I decided. As a result, the appropriate deformed portion 10 as shown in FIG. 4 is obtained, and the yield can be remarkably improved.
【００１３】[0013]
【発明の効果】以上の説明からも明らかなように、本発
明は鋼板の圧延巾を精度よく測定し、また平面形状の管
理もバラツキを生じることなく確実に管理することで、
最適なエッジング量に制御することができるものであ
る。よって本発明は従来の問題点を一掃した鋼板の粗圧
延方法として、産業の発展に寄与するところは極めて大
である。As is apparent from the above description, according to the present invention, the rolled width of the steel sheet is accurately measured, and the planar shape is controlled without any variation,
It is possible to control the optimum edging amount. Therefore, the present invention is extremely large in that it contributes to the development of industry as a rough rolling method for steel sheets that eliminates the conventional problems.
【図１】本発明の実施の形態を示す概略説明図である。FIG. 1 is a schematic explanatory view showing an embodiment of the present invention.
【図２】圧延工程における鋼板の流れを示す説明図であ
る。FIG. 2 is an explanatory diagram showing a flow of a steel sheet in a rolling process.
【図３】巾出し完了後の狙い巾と計測巾の関係を示す説
明図である。FIG. 3 is an explanatory diagram showing a relationship between a target width and a measured width after the completion of width setting.
【図４】鋼板の端部の異形部を示す断面図である。FIG. 4 is a cross-sectional view showing a deformed portion at an end of a steel plate.
【図５】鋼板の端部のその他の異形部を示す断面図であ
る。FIG. 5 is a cross-sectional view showing another modified portion at the end of the steel plate.
【図６】鋼板の端部のその他の異形部を示す断面図であ
る。FIG. 6 is a cross-sectional view showing another modified portion at the end of the steel plate.
２ エッジャー ３ 粗圧延機 ４ 仕上圧延機 ６ 画像処理手段 10 クロップ Ｗ 鋼板 2 edger 3 rough rolling mill 4 Finishing mill 6 Image processing means 10 crops W steel plate
Claims (3)
所定巾まで圧延後、エッジャーにより鋼板の平面形状を
調整し、次いで仕上圧延機によって所定厚さまで圧延す
るようにした鋼板の粗圧延方法において、前記粗圧延機
で最終圧延する直前に鋼板の巾を画像処理手段により測
定し、得られた測定値に基づいて前記エッジャーの加工
巾を算出し、粗圧延機の最終圧延条件を設定するように
したことを特徴とする鋼板の粗圧延方法。1. A rough rolling method for a steel sheet, which comprises rolling a steel sheet as a workpiece to a predetermined width with a rough rolling machine, adjusting a plane shape of the steel sheet with an edger, and then rolling the steel sheet with a finishing rolling machine to a predetermined thickness. In, immediately before the final rolling in the rough rolling mill, the width of the steel sheet is measured by the image processing means, the working width of the edger is calculated based on the obtained measurement value, and the final rolling condition of the rough rolling mill is set. A rough rolling method for a steel sheet, characterized in that.
にしてエッジング量および巾戻り量を算出し、これらの
データから算出した圧延条件に基づいて粗圧延機で最終
圧延を行い巾出し完了後の狙い巾を出すようにした請求
項１に記載の鋼板の粗圧延方法。2. An edging amount and a width-returning amount are calculated based on measurement values measured by an image processing means, and final rolling is performed by a rough rolling machine based on rolling conditions calculated from these data, and after the width-drawing is completed. The method for roughly rolling a steel sheet according to claim 1, wherein the target width is set.
に設けた画像処理手段により測定するようにした請求項
１または２に記載の鋼板の粗圧延方法。3. The rough rolling method for a steel sheet according to claim 1, wherein the width of the steel sheet is measured by an image processing means provided between the edger and the rough rolling machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001188315A JP4681154B2 (en) | 2001-06-21 | 2001-06-21 | Rough rolling method for steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001188315A JP4681154B2 (en) | 2001-06-21 | 2001-06-21 | Rough rolling method for steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003001301A true JP2003001301A (en) | 2003-01-07 |
| JP4681154B2 JP4681154B2 (en) | 2011-05-11 |
Family
ID=19027441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001188315A Expired - Fee Related JP4681154B2 (en) | 2001-06-21 | 2001-06-21 | Rough rolling method for steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4681154B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07303909A (en) * | 1994-05-16 | 1995-11-21 | Nippon Steel Corp | Device for automaticaly correcting setup of width in rough hot rolling |
-
2001
- 2001-06-21 JP JP2001188315A patent/JP4681154B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07303909A (en) * | 1994-05-16 | 1995-11-21 | Nippon Steel Corp | Device for automaticaly correcting setup of width in rough hot rolling |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4681154B2 (en) | 2011-05-11 |
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