JP6912026B1 - Roller shape control method and shape control device - Google Patents

Roller shape control method and shape control device Download PDF

Info

Publication number
JP6912026B1
JP6912026B1 JP2021516832A JP2021516832A JP6912026B1 JP 6912026 B1 JP6912026 B1 JP 6912026B1 JP 2021516832 A JP2021516832 A JP 2021516832A JP 2021516832 A JP2021516832 A JP 2021516832A JP 6912026 B1 JP6912026 B1 JP 6912026B1
Authority
JP
Japan
Prior art keywords
shape
steel sheet
control
rolling mill
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.)
Active
Application number
JP2021516832A
Other languages
Japanese (ja)
Other versions
JPWO2021192713A1 (en
Inventor
鈴木　健治
健治 鈴木
悦充 原田
悦充 原田
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
JFE 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 JFE Steel Corp filed Critical JFE Steel Corp
Application granted granted Critical
Publication of JP6912026B1 publication Critical patent/JP6912026B1/en
Publication of JPWO2021192713A1 publication Critical patent/JPWO2021192713A1/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/142—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2263/00—Shape of product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2263/00—Shape of product
    • B21B2263/02—Profile, e.g. of plate, hot strip, sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2267/00—Roll parameters
    • B21B2267/18—Roll crown; roll profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/02—Roll bending; vertical bending of rolls
    • B21B2269/06—Intermediate roll bending
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/12—Axial shifting the rolls
    • B21B2269/16—Intermediate rolls
    • 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
    • B21B37/38—Control of flatness or profile during rolling of strip, sheets or plates using roll bending
    • 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
    • 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
    • B21B37/42—Control of flatness or profile during rolling of strip, sheets or plates using a combination of roll bending and axial shifting of the rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Ceramic Capacitors (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

本発明に係る圧延機の形状制御方法は、圧延機の出側における鋼板の形状を測定する測定ステップと、測定ステップにおいて測定された鋼板の形状に基づいて鋼板の形状が許容範囲内になるように圧延機を制御する制御ステップと、を含み、制御ステップは、圧延対象の鋼板の幅が所定値超である場合、圧延対象の鋼板の幅が所定値以下である場合の制御ゲインよりも制御ゲインを小さく設定するステップを含む。In the method for controlling the shape of the rolling mill according to the present invention, the shape of the steel plate is within an allowable range based on the measurement step of measuring the shape of the steel plate on the outlet side of the rolling mill and the shape of the steel plate measured in the measurement step. Including a control step for controlling the rolling mill, the control step controls more than the control gain when the width of the steel sheet to be rolled exceeds a predetermined value and the width of the steel sheet to be rolled is equal to or less than a predetermined value. Includes a step to set the gain small.

Description

本発明は、圧延機の形状制御方法及び形状制御装置に関する。 The present invention relates to a shape control method and a shape control device for a rolling mill.

連続式冷間圧延機等の圧延機では、圧延終了後の鋼板の形状を測定し、測定結果を圧延機にフィードバックして鋼板の形状を許容範囲内に制御する方法が採られている。また、その他に、各圧延スタンドに板厚計、又は板厚計及び板速度計を設置し、各圧延スタンドにおいてロールギャップ制御又はロール速度制御を実施する方法が採られている（特許文献１参照）。 In a rolling mill such as a continuous cold rolling mill, a method is adopted in which the shape of the steel sheet after rolling is measured and the measurement result is fed back to the rolling mill to control the shape of the steel sheet within an allowable range. In addition, a method is adopted in which a plate thickness gauge, or a plate thickness gauge and a plate speedometer are installed in each rolling stand, and roll gap control or roll speed control is performed at each rolling stand (see Patent Document 1). ).

特開２０１２−１１０９３９号公報Japanese Unexamined Patent Publication No. 2012-110939

しかしながら、上述した方法は、鋼板の板厚を許容範囲内に収めるための制御であるため、板厚不良が発生することを抑制する効果はあるが、鋼板の破断が発生することは抑制できない。特に板幅が１２００ｍｍ以上の広幅の鋼板になると、形状不良に起因する鋼板の破断が発生しやすくなるという問題があった。 However, since the above-mentioned method is a control for keeping the plate thickness of the steel plate within the permissible range, it has an effect of suppressing the occurrence of a plate thickness defect, but it cannot suppress the occurrence of breakage of the steel plate. In particular, when a wide steel plate having a plate width of 1200 mm or more is used, there is a problem that the steel plate is likely to be broken due to a poor shape.

本発明は、上記課題に鑑みてなされたものであって、その目的は、設備改造等のコストを増大させることなく、板幅が広い鋼板であっても破断が発生することを抑制可能な圧延機の形状制御方法及び形状制御装置を提供することにある。 The present invention has been made in view of the above problems, and an object of the present invention is rolling that can suppress the occurrence of breakage even in a wide steel sheet without increasing the cost of equipment modification or the like. An object of the present invention is to provide a shape control method and a shape control device for a machine.

本発明に係る圧延機の形状制御方法は、圧延機の出側における鋼板の形状を測定する測定ステップと、前記測定ステップにおいて測定された鋼板の形状に基づいて鋼板の形状が許容範囲内になるように圧延機を制御する制御ステップと、を含み、前記制御ステップは、圧延対象の鋼板の幅が所定値超である場合、圧延対象の鋼板の幅が所定値以下である場合の制御ゲインよりも制御ゲインを小さく設定するステップを含む。 In the method for controlling the shape of the rolling mill according to the present invention, the shape of the steel plate is within the permissible range based on the measurement step of measuring the shape of the steel plate on the outlet side of the rolling mill and the shape of the steel plate measured in the measurement step. The control step includes a control step for controlling the rolling mill as described above, and the control step is based on the control gain when the width of the steel sheet to be rolled exceeds a predetermined value and the width of the steel sheet to be rolled is equal to or less than a predetermined value. Also includes the step of setting the control gain small.

本発明に係る圧延機の形状制御装置は、圧延機の出側における鋼板の形状を測定する測定手段と、前記測定手段によって測定された鋼板の形状に基づいて鋼板の形状が許容範囲内になるように圧延機を制御する制御手段と、を備え、前記制御手段は、圧延対象の鋼板の幅が所定値超である場合、圧延対象の鋼板の幅が所定値以下である場合の制御ゲインよりも制御ゲインを小さく設定する。 In the shape control device of the rolling mill according to the present invention, the shape of the steel plate is within the permissible range based on the measuring means for measuring the shape of the steel plate on the outlet side of the rolling mill and the shape of the steel plate measured by the measuring means. A control means for controlling the rolling mill is provided, and the control means is used to obtain a control gain when the width of the steel sheet to be rolled exceeds a predetermined value and the width of the steel sheet to be rolled is equal to or less than a predetermined value. Also set the control gain small.

本発明に係る圧延機の形状制御方法及び形状制御装置によれば、設備改造等のコストを増大させることなく、板幅が広い鋼板であっても破断が発生することを抑制できる。 According to the shape control method and the shape control device of the rolling mill according to the present invention, it is possible to suppress the occurrence of breakage even in a steel plate having a wide plate width without increasing the cost of equipment modification and the like.

図１は、板幅が１２００ｍｍ以下及び１２００ｍｍ超である場合の鋼板の目標形状及び実形状を示す図である。FIG. 1 is a diagram showing a target shape and an actual shape of a steel plate when the plate width is 1200 mm or less and more than 1200 mm. 図２は、実施例における連続式冷間圧延機の構成を示す模式図である。FIG. 2 is a schematic view showing the configuration of a continuous cold rolling mill according to an embodiment. 図３は、従来例及び本発明例の破断率を示す図である。FIG. 3 is a diagram showing the breaking rates of the conventional example and the example of the present invention.

〔概念〕
まず、図１（ａ），（ｂ）を参照して、本発明に係る圧延機の形状制御方法及び形状制御装置の概念について説明する。〔concept〕
First, the concept of the shape control method and the shape control device of the rolling mill according to the present invention will be described with reference to FIGS. 1 (a) and 1 (b).

図１（ａ），（ｂ）はそれぞれ、板幅が１２００ｍｍ以下及び１２００ｍｍ超である場合の鋼板の目標形状及び実形状を示す図である。図１（ａ）に示すように、板幅が１２００ｍｍ以下である場合、実形状では、鋼板の幅方向のエッジ部及び中央部は伸び形状となっており、エッジ部と中央部との間の中間位置（クオーター位置）は張り形状となっており、いずれも目標形状と同様の傾向になっている。このような鋼板の形状分布では、エッジ部が伸び形状となっているために、鋼板は破断しにくい。 1 (a) and 1 (b) are diagrams showing a target shape and an actual shape of a steel sheet when the plate width is 1200 mm or less and more than 1200 mm, respectively. As shown in FIG. 1A, when the plate width is 1200 mm or less, in the actual shape, the edge portion and the central portion in the width direction of the steel sheet have an elongated shape, and the edge portion and the central portion are between the edge portion and the central portion. The intermediate position (quarter position) has a tension shape, and both tend to have the same tendency as the target shape. In such a shape distribution of the steel sheet, the steel sheet is hard to break because the edge portion has an elongated shape.

これに対して、図１（ｂ）に示すように、板幅が１２００ｍｍ超である場合には、実形状では、板幅方向での伸び形状と張り形状の分布が目標形状と必ずしも一致していない部分（形状ムラ）があり、その領域も広い。この場合、部分的に形状ムラが発生した領域の形状を調整するための圧延機のアクチュエータが過制御になる可能性がある。そして、過制御になることで形状ムラが発生した位置とは別の場所の形状が崩れることにより、エッジ部付近の形状がより張り方向に変化する等して鋼板が破断しやすくなる。 On the other hand, as shown in FIG. 1 (b), when the plate width exceeds 1200 mm, the distribution of the elongated shape and the tension shape in the plate width direction does not always match the target shape in the actual shape. There is no part (uneven shape), and the area is wide. In this case, the actuator of the rolling mill for adjusting the shape of the region where the shape unevenness is partially generated may be over-controlled. Then, due to over-control, the shape of the place other than the position where the shape unevenness occurs collapses, so that the shape near the edge portion changes in the tension direction and the steel sheet is liable to break.

従来は、アクチュエータの制御ゲインは、鋼板の板幅によらず一定値としていた。ここで、制御ゲインとは、形状を制御するアクチュエータの動作量を示す。目標とする形状に対する検出された形状の偏差が所定値以上となった場合に、形状を制御するためにアクチュエータが動作するが、その動作量の程度を制御ゲインとして定義する。しかしながら、鋼板の板幅が例えば１２００ｍｍ超になる等、所定の板幅よりも大きくなる場合には、同じ制御ゲインの値を用いると過制御になり、形状崩れが増長することによって鋼板の破断が発生する可能性がある。そこで、本発明では、鋼板の形状崩れが発生しやすくなる鋼板の板幅を所定の板幅として予め定めておく。そして、圧延対象の鋼板の板幅が所定の板幅を超える場合、鋼板の形状を制御するアクチュエータの制御ゲインを、圧延対象の鋼板の板幅が所定の板幅以下である場合の制御ゲインよりも小さくする。具体的には、図１（ａ），（ｂ）に示す例では、板幅が１２００ｍｍを超える鋼板を圧延する際には、板幅が１２００ｍｍ以下である場合の制御ゲインよりも制御ゲインを小さくする。これにより、設備改造等のコストを増大させることなく、鋼板の形状崩れに伴い鋼板が破断することを抑制し、安定して鋼板を圧延することができる。 Conventionally, the control gain of the actuator has been set to a constant value regardless of the plate width of the steel plate. Here, the control gain indicates the amount of movement of the actuator that controls the shape. When the deviation of the detected shape from the target shape becomes a predetermined value or more, the actuator operates to control the shape, and the degree of the movement amount is defined as the control gain. However, when the plate width of the steel plate becomes larger than a predetermined plate width, for example, more than 1200 mm, overcontrol is performed when the same control gain value is used, and the steel plate breaks due to the increase in shape collapse. It can occur. Therefore, in the present invention, the plate width of the steel plate at which the shape of the steel plate is likely to collapse is set in advance as a predetermined plate width. Then, when the plate width of the steel plate to be rolled exceeds a predetermined plate width, the control gain of the actuator that controls the shape of the steel plate is set from the control gain when the plate width of the steel plate to be rolled is equal to or less than the predetermined plate width. Also make it smaller. Specifically, in the examples shown in FIGS. 1A and 1B, when rolling a steel sheet having a plate width of more than 1200 mm, the control gain is smaller than the control gain when the plate width is 1200 mm or less. do. As a result, the steel sheet can be stably rolled by suppressing the steel sheet from breaking due to the shape collapse of the steel sheet without increasing the cost of equipment modification or the like.

〔実施例〕
次に、図２及び図３を参照して、本発明に係る圧延機の形状制御方法及び形状制御装置の実施例について説明する。〔Example〕
Next, an embodiment of the shape control method and the shape control device of the rolling mill according to the present invention will be described with reference to FIGS. 2 and 3.

本実施例では、一例として、図２に示す連続式冷間圧延機１において、最終圧延スタンド出側における鋼板の幅方向の形状測定結果を用いて鋼板の形状制御を行った。なお、図２に示す連続式冷間圧延機１は、リール２ａから払い出された鋼板Ｓを圧延スタンド３ａ〜３ｅにより圧延した後にリール２ｂにより巻き取る圧延機である。また、最終圧延スタンドである圧延スタンド３ｅの出側には鋼板Ｓの幅方向の形状を測定する形状計１０が設置されている。そして、制御装置１１が、形状計１０によって計測された鋼板Ｓの幅方向の形状に基づいて各圧延スタンドに設けられたアクチュエータ(テーパーのついた第一中間ロールのシフト制御やベンダー制御)を制御することにより鋼板Ｓの幅方向の形状を許容範囲内に制御する。 In this embodiment, as an example, in the continuous cold rolling mill 1 shown in FIG. 2, the shape of the steel sheet is controlled by using the shape measurement result in the width direction of the steel sheet on the exit side of the final rolling stand. The continuous cold rolling mill 1 shown in FIG. 2 is a rolling mill in which the steel plate S discharged from the reel 2a is rolled by the rolling stands 3a to 3e and then wound by the reel 2b. Further, a shape meter 10 for measuring the shape of the steel plate S in the width direction is installed on the exit side of the rolling stand 3e, which is the final rolling stand. Then, the control device 11 controls the actuators (shift control and bender control of the first intermediate roll with a taper) provided on each rolling stand based on the shape of the steel plate S in the width direction measured by the shape meter 10. By doing so, the shape of the steel plate S in the width direction is controlled within an allowable range.

また、本実施例では、鋼板Ｓの板厚は０．１〜３．５ｍｍとし、圧延速度は３０〜２０００ｒｐｍとした。また、鋼板Ｓの板幅は６００〜１３００ｍｍの範囲内とした。また、制御ゲインを変更する鋼板Ｓの板幅は、過去の操業実績から形状崩れによる破断の発生率が高くなる境となる１２００ｍｍとした。そして、板幅が１２００ｍｍ以下と同じ制御ゲインでの圧延（従来例：通常ゲイン）、板幅１２００ｍｍ以下の制御ゲインに対して１／２の制御ゲインでの圧延（本発明例１：ゲイン値１／２）、及び板幅が１２００ｍｍ以下の制御ゲインに対して１／４の制御ゲインでの圧延（本発明例２：ゲイン値１／４）をそれぞれ図３に示す通板数（コイル数）について行った。この結果、図３に示すように、従来例の破断率は３．９％程度であったのに対して、本発明例の破断率は０％であった。これにより、本発明によれば、設備改造等のコストを増大させることなく、鋼板の破断が発生することを抑制し、安定して圧延できることが確認された。 Further, in this embodiment, the plate thickness of the steel plate S was 0.1 to 3.5 mm, and the rolling speed was 30 to 2000 rpm. The width of the steel plate S was set within the range of 600 to 1300 mm. Further, the plate width of the steel plate S for which the control gain is changed is set to 1200 mm, which is a boundary where the occurrence rate of breakage due to the shape collapse becomes high based on the past operation results. Then, rolling with the same control gain as the plate width of 1200 mm or less (conventional example: normal gain), rolling with a control gain of 1/2 with respect to the control gain of the plate width of 1200 mm or less (Example 1: Gain value 1). / 2) and rolling with a control gain of 1/4 with respect to a control gain with a plate width of 1200 mm or less (Example 2: Gain value 1/4) are the number of plates (number of coils) shown in FIG. I went about. As a result, as shown in FIG. 3, the breaking rate of the conventional example was about 3.9%, whereas the breaking rate of the example of the present invention was 0%. As a result, according to the present invention, it has been confirmed that the steel sheet can be stably rolled by suppressing the occurrence of breakage of the steel sheet without increasing the cost of equipment modification and the like.

以上、本発明者らによってなされた発明を適用した実施形態について説明したが、本実施形態による本発明の開示の一部をなす記述及び図面により本発明は限定されることはない。例えば、ゼンジミアミル等の単スタンドの圧延機にも適用することができる。すなわち、本実施形態に基づいて当業者等によりなされる他の実施形態、実施例、及び運用技術等は全て本発明の範疇に含まれる。 Although the embodiment to which the invention made by the present inventors has been applied has been described above, the present invention is not limited by the description and the drawings which form a part of the disclosure of the present invention according to the present embodiment. For example, it can be applied to a single-stand rolling mill such as a Z-mill. That is, other embodiments, examples, operational techniques, and the like made by those skilled in the art based on the present embodiment are all included in the scope of the present invention.

本発明によれば、設備改造等のコストを増大させることなく、板幅が広い鋼板であっても破断が発生することを抑制可能な圧延機の形状制御方法及び形状制御装置を提供することができる。 According to the present invention, it is possible to provide a shape control method and a shape control device for a rolling mill capable of suppressing the occurrence of breakage even in a steel plate having a wide plate width without increasing the cost of equipment modification or the like. can.

１ 連続式冷間圧延機
２ａ，２ｂ リール
３ａ〜３ｅ 圧延スタンド
１０ 形状計
１１ 制御装置
Ｓ 鋼板1 Continuous cold rolling mill 2a, 2b reel 3a to 3e Rolling stand 10 Shape meter 11 Control device S Steel plate

Claims (2)

圧延機の出側における鋼板の形状を測定する測定ステップと、
前記測定ステップにおいて測定された鋼板の形状に基づいて鋼板の形状が許容範囲内になるように圧延機を制御する制御ステップと、
を含み、
前記制御ステップは、圧延対象の鋼板の幅が１２００ｍｍ超である場合、圧延対象の鋼板の幅が１２００ｍｍ以下である場合の制御ゲインよりも制御ゲインを小さく設定するステップを含む、圧延機の形状制御方法。 A measurement step to measure the shape of the steel sheet on the outlet side of the rolling mill,
A control step for controlling the rolling mill so that the shape of the steel sheet is within an allowable range based on the shape of the steel sheet measured in the measurement step,
Including
The control step, when the width of the steel sheet rolling interest is 1200mm greater than the width of the steel sheet rolling subject comprising the step of setting a small control gain than a control gain is less than or equal to 1200mm, rolling mill shape control Method. 圧延機の出側における鋼板の形状を測定する測定手段と、
前記測定手段によって測定された鋼板の形状に基づいて鋼板の形状が許容範囲内になるように圧延機を制御する制御手段と、
を備え、
前記制御手段は、圧延対象の鋼板の幅が１２００ｍｍ超である場合、圧延対象の鋼板の幅が１２００ｍｍ以下である場合の制御ゲインよりも制御ゲインを小さく設定する、圧延機の形状制御装置。 A measuring means for measuring the shape of a steel sheet on the outlet side of a rolling mill,
A control means for controlling the rolling mill so that the shape of the steel sheet is within an allowable range based on the shape of the steel sheet measured by the measuring means.
With
Wherein if the width of the steel sheet rolling interest is 1200mm greater than the width of the steel sheet in the rolling target is small to set the control gain than a control gain is less than or equal to 1200mm, rolling mill shape control.
JP2021516832A 2020-03-23 2021-02-12 Roller shape control method and shape control device Active JP6912026B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2020050557 2020-03-23
JP2020050557 2020-03-23
PCT/JP2021/005355 WO2021192713A1 (en) 2020-03-23 2021-02-12 Shape control method for rolling machine and shape control device

Publications (2)

Publication Number Publication Date
JP6912026B1 true JP6912026B1 (en) 2021-07-28
JPWO2021192713A1 JPWO2021192713A1 (en) 2021-09-30

Family

ID=77891162

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2021516832A Active JP6912026B1 (en) 2020-03-23 2021-02-12 Roller shape control method and shape control device

Country Status (6)

Country Link
US (1) US20230133751A1 (en)
EP (1) EP4129511B1 (en)
JP (1) JP6912026B1 (en)
MX (1) MX2022010778A (en)
TW (1) TWI769727B (en)
WO (1) WO2021192713A1 (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS595362B2 (en) * 1976-10-14 1984-02-04 新日本製鐵株式会社 Plate thickness control method in plate rolling
JPH0626723B2 (en) * 1986-09-24 1994-04-13 三菱電機株式会社 Plate shape control method
JPH09174128A (en) * 1995-12-26 1997-07-08 Kawasaki Steel Corp Method for controlling shape of rolled stock
JP2005313190A (en) * 2004-04-28 2005-11-10 Nittetsu Elex Co Ltd Method for suppressing meandering in rolling mill
JP4423618B2 (en) * 2007-03-28 2010-03-03 株式会社日立製作所 Rolling shape control method and rolling shape control system
JP5363380B2 (en) * 2010-03-08 2013-12-11 株式会社日立製作所 Management system for hydraulic reduction control device and management method for hydraulic reduction control device
JP5799497B2 (en) 2010-11-25 2015-10-28 Ｊｆｅスチール株式会社 Thickness control method of rolling mill
CN102581033B (en) * 2011-01-12 2014-03-19 宝山钢铁股份有限公司 Method for controlling opening degree of rough rolling edger during rolling of tapered slab
JP6402760B2 (en) * 2015-09-30 2018-10-10 Ｊｆｅスチール株式会社 Shape control method and apparatus in rolling mill
JP6607318B2 (en) * 2016-07-26 2019-11-20 東芝三菱電機産業システム株式会社 Edger control device

Also Published As

Publication number Publication date
EP4129511A4 (en) 2023-08-09
WO2021192713A1 (en) 2021-09-30
EP4129511B1 (en) 2024-05-29
TWI769727B (en) 2022-07-01
JPWO2021192713A1 (en) 2021-09-30
US20230133751A1 (en) 2023-05-04
MX2022010778A (en) 2022-09-26
TW202140161A (en) 2021-11-01
EP4129511A1 (en) 2023-02-08

Similar Documents

Publication Publication Date Title
US7854155B2 (en) Method and rolling mill for improving the running-out of a rolled metal strip whose trailing end is moving at rolling speed
KR101767783B1 (en) Apparatus and method for maintaining flatness of rolling material
JP6036659B2 (en) Roll opening control method in continuous casting machine
JP5821568B2 (en) Steel strip rolling method
US12083569B2 (en) Meandering control method for hot-rolled steel strip, meandering control device, and hot rolling equipment
JP6620777B2 (en) Leveling setting method for rolling mill and leveling setting apparatus for rolling mill
US20230118015A1 (en) Method Of Controlling Flatness Of Strip Of Rolled Material, Control System And Production Line
JP6912026B1 (en) Roller shape control method and shape control device
JP2008142756A (en) Method for controlling thickness/shape in cold rolling
JP2008043967A (en) Method for controlling shape of plate in hot rolling
JP4795148B2 (en) Method of controlling tension in continuous rolling mill and continuous rolling mill
JP2010214453A (en) Method of deciding tuning rate in cold rolling process and cold rolling method
JP3506120B2 (en) Method of changing rolling load distribution of tandem rolling mill
JP3252751B2 (en) Strip width control method in cold tandem rolling
JP5637906B2 (en) Thickness control method and thickness control device for cold rolling mill
JP2000094023A (en) Method and device for controlling leveling in hot finishing mill
JP4227686B2 (en) Edge drop control method during cold rolling
JP7314921B2 (en) Method for controlling meandering of hot-rolled steel strip, meandering control device, and hot rolling equipment
JP6848596B2 (en) Rolling equipment and rolling method in twin-drum continuous casting equipment
JP2019107675A (en) Control device and control method for rolling mill
JP6743835B2 (en) Method for rolling shaped steel and method for adjusting leveling amount in rolling shaped steel
JP5385643B2 (en) Sheet thickness control method and sheet thickness control apparatus in multi-high rolling mill
JP6673285B2 (en) Apparatus and method for controlling shape of rolled material and method for manufacturing thin metal plate
JP6269538B2 (en) Rolling mill control method, rolling mill control apparatus, and steel plate manufacturing method
JPH0234241B2 (en)

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20210324

A871 Explanation of circumstances concerning accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A871

Effective date: 20210324

A975 Report on accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A971005

Effective date: 20210421

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20210427

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20210513

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20210608

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20210621

R150 Certificate of patent or registration of utility model

Ref document number: 6912026

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R157 Certificate of patent or utility model (correction)

Free format text: JAPANESE INTERMEDIATE CODE: R157

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250