JPH1060545A - Method for continuously passing steel strip restraining vibration and curl shaped warp and device therefor - Google Patents
Method for continuously passing steel strip restraining vibration and curl shaped warp and device thereforInfo
- Publication number
- JPH1060545A JPH1060545A JP22934396A JP22934396A JPH1060545A JP H1060545 A JPH1060545 A JP H1060545A JP 22934396 A JP22934396 A JP 22934396A JP 22934396 A JP22934396 A JP 22934396A JP H1060545 A JPH1060545 A JP H1060545A
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- electromagnet
- electromagnets
- vibration
- width direction
- 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.)
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Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Electroplating Methods And Accessories (AREA)
- Coating With Molten Metal (AREA)
- Control Of Heat Treatment Processes (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、Ｃ反りやバタツキ等の
振動を抑制しながら鋼帯を連続走行させる方法及び装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for continuously running a steel strip while suppressing vibration such as C warp and flapping.
【０００２】[0002]
【従来の技術】焼鈍ライン，めっきライン，塗装ライン
等では、鋼帯を連続走行させながら各種の処理を施して
いる。走行中の鋼板には、処理条件等の変動による影響
を受け、板幅方向の反り（以下、Ｃ反りという）やバタ
ツキ等の振動が発生している。たとえば、連続焼鈍炉の
ガスジェット冷却体では、吹き付けられる高速のガスに
より鋼帯が振動する。また、不均一な冷却等は、Ｃ反り
の原因となる熱歪みを発生させる。2. Description of the Related Art In an annealing line, a plating line, a coating line and the like, various treatments are performed while a steel strip is continuously driven. The running steel sheet is affected by fluctuations in processing conditions and the like, and generates vibrations such as warpage in the sheet width direction (hereinafter referred to as C warpage) and flapping. For example, in a gas jet cooling body of a continuous annealing furnace, a steel strip vibrates due to a high-speed gas blown. In addition, uneven cooling or the like causes thermal distortion that causes C warpage.
【０００３】Ｃ反りや振動は、処理条件を不規則化し、
処理された鋼帯の品質を不安定化する。たとえば、振動
によって鋼帯が冷却ガス吹付けノズルと接触し、鋼帯に
表面疵を付けることがある。鋼帯とノズルとの接触は、
通板ラインから離してノズルを設定することにより避け
られるが、結果として冷却能力が低下する。そこで、走
行中の鋼帯のＣ反りや振動を解消するため、従来から種
々の方法が提案されている。そのうち、電磁力を使用し
て鋼帯の形状矯正や振動抑制するものとしては、過渡振
動の波形を検出する変位計を使用し、搬送ラインの上流
から伝播される過渡振動の変位を電磁力で低減し、下流
側に伝播させることが特開平４−３６５８２２号公報で
紹介されている。また、特開平５−１３６２号公報で
は、誘導電流と高周波電流との相互作用による磁気圧力
を鋼板両面に作用させ、Ｃ反りや振動を抑制している。[0003] C warpage and vibration make processing conditions irregular,
Destabilizes the quality of the treated steel strip. For example, the steel strip may come into contact with the cooling gas spray nozzle due to vibration, causing a surface flaw on the steel strip. The contact between the steel strip and the nozzle is
This can be avoided by setting the nozzles away from the passing line, but the cooling capacity is reduced as a result. Therefore, various methods have been conventionally proposed to eliminate C warpage and vibration of the running steel strip. Among them, as a device that uses electromagnetic force to correct the shape of steel strip and suppress vibration, a displacement meter that detects the waveform of transient vibration is used, and the displacement of transient vibration transmitted from the upstream of the transfer line is used by electromagnetic force. Japanese Patent Application Laid-Open Publication No. 4-365822 discloses a technique of reducing the frequency and propagating it downstream. In Japanese Patent Application Laid-Open No. 5-1362, a magnetic pressure due to an interaction between an induced current and a high-frequency current is applied to both surfaces of a steel plate to suppress C warpage and vibration.
【０００４】[0004]
【発明が解決しようとする課題】しかし、変位計を使用
する特開平４−３６５８２２号公報の方式では、多数の
制御機器を組み込んだ制御装置が必要とされるため、設
備が高価なものとなる。特に、板幅方向に変形したＣ反
りのある鋼帯に適用させるためには、複数個の変位計及
び制振装置を板幅方向に沿って配置する必要があり、結
果として複雑で高価な制御装置となる。他方、磁気圧力
を作用させる特開平５−１３６２号の方式では、誘導電
流が鋼帯表面に集中し易く、内部まで浸透しない。その
ため、板厚の大きな鋼帯に対しては磁気圧力が内部まで
到達せず、十分な制振効果が得られない。本発明は、こ
のような問題を解消すべく案出されたものであり、走行
している鋼帯の形状や振動に応じて移動磁界発生コイル
の位置を調節することにより、鋼帯のＣ反りを矯正する
と共に振動を抑制し、安定条件下で鋼帯を走行させるこ
とを目的とする。However, in the system disclosed in Japanese Patent Application Laid-Open No. 4-365822 using a displacement meter, a control device incorporating a large number of control devices is required, and the equipment becomes expensive. . In particular, in order to apply to a steel strip having a C warp deformed in the sheet width direction, it is necessary to arrange a plurality of displacement gauges and vibration damping devices along the sheet width direction, resulting in complicated and expensive control. Device. On the other hand, in the system disclosed in Japanese Patent Application Laid-Open No. 5-1362 in which a magnetic pressure is applied, the induced current tends to concentrate on the surface of the steel strip and does not penetrate into the inside. Therefore, the magnetic pressure does not reach the inside of the steel strip having a large thickness, and a sufficient vibration damping effect cannot be obtained. The present invention has been devised in order to solve such a problem. By adjusting the position of the moving magnetic field generating coil in accordance with the shape and vibration of the running steel strip, the C-warping of the steel strip is achieved. It is intended to correct vibration and suppress vibration, and to run a steel strip under stable conditions.
【０００５】[0005]
【課題を解決するための手段】本発明の連続通板方法
は、その目的を達成するため、鋼帯の通板ラインの両側
に、鋼帯の幅方向に沿って複数の電磁石を配列し、鋼帯
から電磁石までの距離が遠くなったときには、対応する
移動磁界発生コイルを鋼帯に接近させ、鋼帯から電磁石
までの距離が近くなったときには、対応する電磁石を鋼
帯から離間させ、板幅方向に強度分布が調整された電磁
力で鋼帯の形状を矯正し、正規の走行ラインに復帰させ
ることを特徴とする。また、本発明に従った連続通板装
置は、鋼帯の通板ラインの両側に、鋼帯の幅方向に沿っ
て配置された複数の電磁石と、各電磁石に対応して、板
幅方向に関し同じ位置関係で配置された複数の位置セン
サーと、位置センサーで検出された鋼帯の位置情報が入
力され、鋼帯の変位量を打ち消す電磁力に必要な移動量
を演算する制御回路と、移動量の演算結果が入力され、
個々の電磁石の移動量を制御する電磁石移動装置とを備
えている。In order to achieve the object, the continuous threading method of the present invention has a plurality of electromagnets arranged on both sides of a steel strip threading line along the width direction of the steel strip. When the distance from the steel strip to the electromagnet increases, the corresponding moving magnetic field generating coil approaches the steel strip, and when the distance from the steel strip to the electromagnet decreases, the corresponding electromagnet is separated from the steel strip. It is characterized in that the shape of the steel strip is corrected by an electromagnetic force whose strength distribution is adjusted in the width direction, and the steel strip is returned to a normal running line. In addition, the continuous threading device according to the present invention includes a plurality of electromagnets arranged along the width direction of the steel strip on both sides of the steel strip threading line, and a plurality of electromagnets corresponding to the respective electromagnets. A plurality of position sensors arranged in the same positional relationship, a position information of the steel strip detected by the position sensor is input, and a control circuit for calculating a movement amount necessary for an electromagnetic force for canceling a displacement amount of the steel strip, The operation result of the quantity is input,
And an electromagnet moving device for controlling the moving amount of each electromagnet.
【０００６】[0006]
【実施の形態】本発明に従った連続通板装置は、図１
（ａ）の正面図で示すように、鋼帯１の板幅方向に関し
て複数の電磁石２，２・・を配列している。また、各電
磁石２，２・・に対応する位置センサー３，３・・を、
鋼帯１の板幅方向に関して同じ位置関係で配置してい
る。電磁石２，２・・は、図１（ｂ）の平面図で示すよ
うに、鋼帯１の表裏両面に対向して設けられる。位置セ
ンサー３，３・・には、渦流式センサー，光センサー等
があり、鋼帯１の表裏両側の何れか一方、又は双方に設
けられる。板幅方向に配置された複数の位置センサー
３，３・・は、走行している鋼帯１の板幅方向各位置を
検出し、図２に示すように検出結果を測定位置情報とし
て制御回路４に出力する。制御回路４には、鋼帯１が正
規の通板ラインに沿って走行しているときの位置が基準
位置情報として入力されている。制御回路４は、測定位
置情報を基準位置情報と比較し、正規の通板ラインから
の鋼帯１のズレ，すなわち変位量を算出する。そして、
この変位量を打ち消す電磁力を発生させるのに必要な距
離を演算し、表裏の電磁石２，２・・に対応する電磁石
移動装置５，５・・に演算結果を出力する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A continuous threading apparatus according to the present invention is shown in FIG.
As shown in the front view of (a), a plurality of electromagnets 2 are arranged in the width direction of the steel strip 1. Also, position sensors 3, 3,... Corresponding to the respective electromagnets 2, 2,.
The steel strips 1 are arranged in the same positional relationship in the sheet width direction. The electromagnets 2, 2,... Are provided to face the front and back surfaces of the steel strip 1 as shown in the plan view of FIG. The position sensors 3, 3,... Include an eddy current sensor, an optical sensor, and the like, and are provided on one or both of the front and back sides of the steel strip 1. A plurality of position sensors 3, 3... Arranged in the plate width direction detect each position of the running steel strip 1 in the plate width direction, and as shown in FIG. 4 is output. The position when the steel strip 1 is traveling along the normal threading line is input to the control circuit 4 as reference position information. The control circuit 4 compares the measured position information with the reference position information, and calculates a deviation of the steel strip 1 from the normal threading line, that is, a displacement amount. And
The distance required to generate an electromagnetic force for canceling the displacement is calculated, and the calculation result is output to the electromagnet moving devices 5, 5,... Corresponding to the front and back electromagnets 2, 2,.
【０００７】たとえば、連続焼鈍炉から送り出された鋼
帯１が図３に示すＣ反りがある形状Ｃ0 になっていると
き、上側両端部の電磁石２，２及び下側中央部の電磁石
２から鋼帯１までの距離は、正規の通板状態にある鋼帯
１と各電磁石との距離よりも長くなっている。また、上
側中央部の電磁石２及び下側両端部の電磁石２，２から
鋼帯１までの距離は、正規の通板状態にある鋼帯１と各
電磁石との距離よりも短くなっている。そこで、上側で
は両端部に向かって漸増する電磁力分布，下側では中央
部に向かって漸増する電磁力分布が得られるように、上
側両端部の電磁石２，２及び下側中央部の電磁石２を鋼
帯１に向けて接近させ、上側中央部の電磁石２及び下側
両端部の電磁石２，２を鋼帯１から離間させる。その結
果、鋼帯１は、Ｃ反り形状Ｃ0 に抗して板幅方向両端部
では上向きに、板幅方向中央部では下向きに電磁力で引
っ張られ、フラットな形状Ｃ1 に矯正される。Ｃ反りが
矯正された後の形状Ｃ1 をもつ鋼帯１に対しては、電磁
力の強度分布が板幅方向に関して均一化される。そのた
め、鋼帯１は、フラットな形状Ｃ1 を維持した状態で通
板され、熱処理，めっき，化成処理，塗装等の各種処理
が板幅方向に関して均一に施される。[0007] For example, when the band sent out from the continuous annealing furnace of steel 1 is in the shape C 0 there is a C warpage shown in FIG. 3, the electromagnet 2 of electromagnets 2,2 and lower central portion of the upper end portions The distance to the steel strip 1 is longer than the distance between the steel strip 1 which is in the normal passing state and each electromagnet. Further, the distance from the electromagnet 2 in the upper central portion and the electromagnets 2 and 2 in both lower end portions to the steel strip 1 is shorter than the distance between the steel strip 1 in the normal passing state and each electromagnet. Therefore, the electromagnets 2 and 2 at the upper end and the electromagnet 2 at the lower center are obtained so that an electromagnetic force distribution that gradually increases toward both ends is obtained on the upper side, and an electromagnetic force distribution that gradually increases toward the center is obtained on the lower side. Is moved toward the steel strip 1, and the electromagnet 2 at the upper central portion and the electromagnets 2 and 2 at both lower end portions are separated from the steel strip 1. As a result, the steel strip 1 is upward in the sheet widthwise ends against the C warped shape C 0, pulled by the electromagnetic force downward in the plate width direction central portion, it is corrected to the flat shape C 1. For steel strip 1 having a shape C 1 after the C warpage is corrected, the intensity distribution of the electromagnetic force is uniform with respect to the sheet width direction. Therefore, the steel strip 1 is strip passing while maintaining the flat shape C 1, heat treatment, plating, chemical conversion, various processes such as coating is applied uniformly with respect to the plate width direction.
【０００８】走行している鋼帯１が表裏方向に振動して
いる場合でも、同様な方式で各電磁石２，２・・と鋼帯
１との距離を調整することができる。すなわち、鋼帯１
が電磁石２，２から離れているときには電磁石２，２を
鋼帯１に向けて前進させ、鋼帯１が電磁石２，２に接近
しているときには電磁石２，２を鋼帯１から離間する。
これにより鋼帯１の振動を打ち消す電磁力が作用し、鋼
帯１が正規の通板ラインに沿って走行する。また、鋼帯
１から電磁石２，２・・までの距離を小さくできるた
め、必要な電磁力も小さくて済み、小型電磁石を電磁石
２，２・・として使用できる。Even when the running steel strip 1 vibrates in the front and back directions, the distance between the electromagnets 2, 2,... And the steel strip 1 can be adjusted in the same manner. That is, steel strip 1
When the steel strip 1 is away from the electromagnets 2, 2, the electromagnets 2, 2 are advanced toward the steel strip 1, and when the steel strip 1 is approaching the electromagnets 2, 2, the electromagnets 2, 2 are separated from the steel strip 1.
As a result, an electromagnetic force acts to cancel the vibration of the steel strip 1, and the steel strip 1 travels along a regular threading line. Also, since the distance from the steel strip 1 to the electromagnets 2, 2,... Can be reduced, the required electromagnetic force can be reduced, and small electromagnets can be used as the electromagnets 2, 2,.
【０００９】[0009]
【実施例】板厚０．２ｍｍ，板幅１２００ｍｍの鋼帯１
を、１００ｍ／分の速度で連続焼鈍炉内を通板した。電
磁石２，２・・としては、高さ５００ｍｍ，幅１００ｍ
ｍ，２０００ターンの電磁石を鋼帯１の板幅方向に１５
個（両面で３０個）配列した。静止状態にある鋼帯１と
各電磁石２，２・・との距離は、１０ｍｍに設定した。
また、各電磁石２，２・・に対応して板幅方向に関して
同じ位置関係で、電磁石２，２・・と同数の位置センサ
ー３，３・・を電磁石２，２・・の直近上方に配置し
た。なお、位置センサー３には、渦流式センサーを使用
した。電磁石２，２・・には、２００Ａの直流電流を供
給した。また、対応する位置センサー３，３で検出され
た各電磁石２，２・・から鋼帯１までの距離に応じて、
電磁石２，２・・を±５ｍｍの範囲で鋼帯表面方向に前
後進させた。このように鋼帯１の振動に合わせて電磁石
２，２・・を移動させたとき、振動が大幅に抑制され、
Ｃ反りも矯正された。その結果、熱処理後の鋼帯は、強
度，伸び等の物性値が板幅方向に関して均一化されてい
た。DESCRIPTION OF THE PREFERRED EMBODIMENTS Steel strip 1 having a thickness of 0.2 mm and a width of 1200 mm
Was passed through a continuous annealing furnace at a speed of 100 m / min. As electromagnets 2, 2, ..., height 500mm, width 100m
2,000 turns of electromagnet in the width direction of steel strip 1
(30 on both sides). The distance between the steel strip 1 in a stationary state and each of the electromagnets 2, 2,... Was set to 10 mm.
Also, the same number of position sensors 3, 3,... As the electromagnets 2, 2,... Are arranged immediately above the electromagnets 2, 2,. did. Note that an eddy current sensor was used as the position sensor 3. A DC current of 200 A was supplied to the electromagnets 2, 2,. Also, according to the distance from each of the electromagnets 2, 2, ... detected by the corresponding position sensors 3, 3 to the steel strip 1,
The electromagnets 2, 2,... Were moved back and forth in the steel strip surface direction within a range of ± 5 mm. When the electromagnets 2, 2,... Are moved in accordance with the vibration of the steel strip 1, the vibration is greatly suppressed,
C warpage was also corrected. As a result, physical properties such as strength and elongation of the steel strip after the heat treatment were made uniform in the sheet width direction.
【００１０】[0010]
【発明の効果】以上に説明したように、本発明において
は、走行している鋼帯の位置に応じて各電磁石を接近又
は離間させることにより、鋼帯のＣ反りを矯正すると共
に、表裏方向の振動を抑制している。そのため、鋼帯の
形状や姿勢が安定化され、各種機器との接触に起因する
表面疵が発生することなく、熱処理，めっき，化成処
理，塗装等の各種処理を板幅方向に関して均一に施すこ
とができ、品質安定性に優れた製品が製造される。As described above, according to the present invention, the C-warping of the steel strip is corrected by moving each electromagnet closer or farther in accordance with the position of the running steel strip, and the front and back directions are improved. Vibration is suppressed. Therefore, the shape and posture of the steel strip are stabilized, and various treatments such as heat treatment, plating, chemical conversion treatment, and painting are performed uniformly in the width direction of the plate without generating surface defects due to contact with various devices. To produce products with excellent quality stability.
【図１】 本発明に従って電磁石を配列した連続通板装
置を鋼帯の表面に直交する方向（ａ）及び長手方向
（ｂ）にみた図FIG. 1 is a view of a continuous threading apparatus in which electromagnets are arranged according to the present invention in a direction (a) orthogonal to a surface of a steel strip and a longitudinal direction (b).
【図２】 鋼帯との距離に応じて電磁石を移動させる機
構FIG. 2 A mechanism for moving an electromagnet according to the distance from a steel strip
【図３】 電磁石を移動させる一例FIG. 3 shows an example of moving an electromagnet.
１：鋼帯 ２：電磁石 ３：位置センサー ４：
制御回路 ５：電磁石移動装置 Ｃ0 ：Ｃ反りのある鋼帯のプロフィール Ｃ1 ：矯正
後の鋼帯のプロフィール1: steel strip 2: electromagnet 3: position sensor 4:
Control circuit 5: Electromagnet moving device C 0 : Profile of steel strip with C warpage C 1 : Profile of steel strip after straightening
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｃ２３Ｇ 3/02 Ｃ２３Ｇ 3/02 (72)発明者 中本 一成 兵庫県尼崎市鶴町１番地 日新製鋼株式会 社技術研究所内──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code Agency reference number FI Technical indication // C23G 3/02 C23G 3/02 (72) Inventor Kazunari Nakamoto 1 Tsurumachi, Amagasaki City, Hyogo Prefecture Address Nisshin Steel Co., Ltd.
Claims (2)
向に沿って複数の電磁石を配列し、鋼帯から電磁石まで
の距離が遠くなったときには、対応する電磁石を鋼帯に
接近させ、鋼帯から電磁石までの距離が近くなったとき
には、対応する電磁石を鋼帯から離間させ、板幅方向に
強度分布が調整された電磁力で鋼帯の形状を矯正し、正
規の走行ラインに復帰させることを特徴とする振動及び
Ｃ反りを抑制した鋼帯の連続通板方法。A plurality of electromagnets are arranged on both sides of a steel strip passing line along the width direction of the steel strip, and when the distance from the steel strip to the electromagnet becomes longer, the corresponding electromagnet is placed on the steel strip. When the distance from the steel strip to the electromagnet is short, the corresponding electromagnet is separated from the steel strip, the shape of the steel strip is corrected by the electromagnetic force whose strength distribution has been adjusted in the sheet width direction, and regular running is performed. A continuous strip passing method of a steel strip in which vibration and C warpage are suppressed, wherein the method is returned to a line.
向に沿って配置された複数の電磁石と、各電磁石に対応
して、板幅方向に関し同じ位置関係で配置された複数の
位置センサーと、位置センサーで検出された鋼帯の位置
情報が入力され、鋼帯の変位量を打ち消す電磁力に必要
な移動量を演算する制御回路と、移動量の演算結果が入
力され、個々の電磁石の移動量を制御する電磁石移動装
置とを備えているとを特徴とする振動及びＣ反りを抑制
した鋼帯の連続通板装置。2. A plurality of electromagnets arranged on both sides of a steel strip threading line along the width direction of the steel strip, and a plurality of electromagnets arranged corresponding to each electromagnet in the same positional relationship in the sheet width direction. A position sensor, a position information of the steel strip detected by the position sensor is input, a control circuit for calculating a movement amount required for an electromagnetic force for canceling the displacement amount of the steel band, and a calculation result of the movement amount are input, An electromagnet moving device for controlling the moving amount of each electromagnet, comprising: a continuous strip passing device for a steel strip in which vibration and C warpage are suppressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22934396A JPH1060545A (en) | 1996-08-12 | 1996-08-12 | Method for continuously passing steel strip restraining vibration and curl shaped warp and device therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22934396A JPH1060545A (en) | 1996-08-12 | 1996-08-12 | Method for continuously passing steel strip restraining vibration and curl shaped warp and device therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1060545A true JPH1060545A (en) | 1998-03-03 |
Family
ID=16890681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22934396A Withdrawn JPH1060545A (en) | 1996-08-12 | 1996-08-12 | Method for continuously passing steel strip restraining vibration and curl shaped warp and device therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1060545A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002294348A (en) * | 2001-03-30 | 2002-10-09 | Shinko Electric Co Ltd | Vibration damping device for steel plate |
| JP2002294420A (en) * | 2001-04-03 | 2002-10-09 | Shinko Electric Co Ltd | Vibration suppressor for steel sheet |
| JP2002322572A (en) * | 2001-04-23 | 2002-11-08 | Nippon Steel Corp | Method and apparatus for suppressing uneven appearance of steel sheet |
| JP2013104094A (en) * | 2011-11-14 | 2013-05-30 | Jfe Steel Corp | Meandering correction device and meandering correction method in continuous passing line of steel strip |
-
1996
- 1996-08-12 JP JP22934396A patent/JPH1060545A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002294348A (en) * | 2001-03-30 | 2002-10-09 | Shinko Electric Co Ltd | Vibration damping device for steel plate |
| JP4719995B2 (en) * | 2001-03-30 | 2011-07-06 | シンフォニアテクノロジー株式会社 | Steel plate vibration suppression device |
| JP2002294420A (en) * | 2001-04-03 | 2002-10-09 | Shinko Electric Co Ltd | Vibration suppressor for steel sheet |
| JP4622134B2 (en) * | 2001-04-03 | 2011-02-02 | シンフォニアテクノロジー株式会社 | Steel plate vibration suppression device |
| JP2002322572A (en) * | 2001-04-23 | 2002-11-08 | Nippon Steel Corp | Method and apparatus for suppressing uneven appearance of steel sheet |
| JP2013104094A (en) * | 2011-11-14 | 2013-05-30 | Jfe Steel Corp | Meandering correction device and meandering correction method in continuous passing line of steel strip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20031104 |