JPH01215406A - Controller for speed of tandem rolling mill - Google Patents

Controller for speed of tandem rolling mill

Info

Publication number
JPH01215406A
JPH01215406A JP63037158A JP3715888A JPH01215406A JP H01215406 A JPH01215406 A JP H01215406A JP 63037158 A JP63037158 A JP 63037158A JP 3715888 A JP3715888 A JP 3715888A JP H01215406 A JPH01215406 A JP H01215406A
Authority
JP
Japan
Prior art keywords
stand
speed
mill
tandem mill
control
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
Application number
JP63037158A
Other languages
Japanese (ja)
Other versions
JPH0773734B2 (en
Inventor
Toshiaki Niihori
新堀 俊明
Susumu Kitani
木谷 進
Toshio Yoshikawa
吉川 利夫
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP63037158A priority Critical patent/JPH0773734B2/en
Publication of JPH01215406A publication Critical patent/JPH01215406A/en
Publication of JPH0773734B2 publication Critical patent/JPH0773734B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To perform mill speed control not changing a speed of a 1st stand by making the 1st stand a pivot stand and supplying a successive control amount obtained by correcting a speed of an (i)th stand to a control means for an (i+1)th and later stands. CONSTITUTION:A mass flow standard of a tandem hot strip mill 3 is determined that in the No.1 stand by making the No.1 stand as a pivot stand. A speed of the No.1 stand is kept constant so that AGC or successive control performed in a manual speed control mode are conducted for later stands than the No.1 stand as the No.1 stand is a standard. Therefore, speed synchronization between a continuous casting machine 1 and the mill 3 is easily performed and variations in tension on the inlet side of the mill 3 are prevented. At a time of changing a speed of some stand to deal with tension variance in the mill 3, a control preventing mass flow variation and not changing a speed of a 1st stand on the inlet side of the mill 3 is performed to keep a balance between the mill 3 and the casting machine 1.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、タンデムミルの速度制御装置に係り、特に、
タンデムミルの入り側に1例えば連続鋳造設備のように
タンデムミルの入り側速度を規定する設備を含む連続鋳
造圧延設備に用いられるタンデムミルの速度を制御する
のに好適な速度制御装置に関するものである。
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a speed control device for a tandem mill, and particularly,
This invention relates to a speed control device suitable for controlling the speed of a tandem mill used in continuous casting and rolling equipment, including equipment for regulating the entry speed of the tandem mill, such as continuous casting equipment. be.

〔従来の技術〕[Conventional technology]

従来のタンデムミルの速度制御装置としては。 As a conventional tandem mill speed control device.

特公昭58−52448号に記載のように、あるスタン
ドをマスフローの基準となるピボットスタンドとし、他
のスタンドから上流または下流にサクセシブ制御を行う
タンデムミルの速度制御装置が知られている。
As described in Japanese Patent Publication No. 58-52448, a speed control device for a tandem mill is known in which a certain stand is used as a pivot stand serving as a reference for mass flow, and successive control is performed upstream or downstream from other stands.

これら従来装置にあって最も重要なことは、安定に圧延
しているスタンドに不必要なマスプロー変動を生じさせ
ないことであるとされていた。
The most important thing in these conventional devices is to prevent unnecessary mass flow fluctuations from occurring in a stand that is stably rolling.

(発明が解決しようとする課題〕 ところが、上記速度制御装置では、例えば第1〜i+1
スタンド間の張力変動を修正するためにオペレータがi
スタンドの速度を変化させ゛たとすると、iスタンドよ
り上流のマスフローが変化しないように各スタンドの速
度を決めているスタントスピードレオスタット5SRH
の比率に従って、上−流スタンドの速度も同時に変化す
るようにしである。このサクセシブ制御によれば、最終
的にNo。
(Problem to be solved by the invention) However, in the above speed control device, for example,
In order to correct for tension variations between stands, the operator
If we change the speed of the stands, the stunt speed rheostat 5SRH determines the speed of each stand so that the mass flow upstream from the i stand does not change.
According to the ratio of , the speed of the upstream stand also changes at the same time. According to this successive control, the final result is No.

1スタンドの速度も変化してしまう、従来のタンデムホ
ットストリップミルでは、No、1スタンド入り側の張
力はフリー状態になつ−ており、!jo、1スタンド速
度が変化しても何等支障が無かった。
In conventional tandem hot strip mills, where the speed of one stand also changes, the tension on the entry side of one stand is in a free state. jo, there was no problem even if the speed of one stand changed.

これに対し、連続鋳造設備とホットストリップミルとを
結合したようなシステムでは、N001スタンドの速度
が変化すると、連続鋳造設備出側速度が一定であるから
、ホットストリップミル入り側の張力変動となってしま
う、この張力変動は品質の低下につながる。
On the other hand, in a system that combines continuous casting equipment and a hot strip mill, if the speed of the N001 stand changes, the tension on the entry side of the hot strip mill will change because the exit speed of the continuous casting equipment is constant. This tension fluctuation leads to a decrease in quality.

本発明の目的は、タンデムミルの入り側にその入り側速
度を規定する連続鋳造設備等の設備を含む連続鋳造圧延
設備に用いるタンデムミルの速度制御装置を提供するこ
とである。
An object of the present invention is to provide a speed control device for a tandem mill used in a continuous casting and rolling facility that includes equipment such as a continuous casting facility that defines an entry speed on the entry side of the tandem mill.

〔課題を解決するための手段〕 本発明は、上記目的を達成するために、それぞれの速度
を制御する手段を備えた複数のスタンドからなるタンデ
ムミルの入り側にタンデムミル入り側速度を規定する設
備を含む連続鋳造圧延設備に用いるタンデムミルの速度
制御装置において、前記タンデムミルの入り側第1スタ
ンドを前記規定速度で作動するピボットスタンドとし、
第iスタンドの速度を補正したときのサクセシブ制御量
を第iスタンド速度制御手段から第i+1以降のスタン
□ドの速度制御手段に供給する手段を備え−たタンデム
ミルの速度制御装置を提案するものである。
[Means for Solving the Problems] In order to achieve the above object, the present invention defines a tandem mill entry speed on the entry side of a tandem mill consisting of a plurality of stands each having a means for controlling the speed of each stand. In a speed control device for a tandem mill used in continuous casting and rolling equipment including equipment, a first stand on the entry side of the tandem mill is a pivot stand that operates at the specified speed;
To propose a speed control device for a tandem mill, comprising means for supplying a successive control amount when the speed of the i-th stand is corrected from the i-th stand speed control means to the speed control means of the i+1th and subsequent stands. It is.

〔作用〕[Effect]

本発明においては、No、1スタンドをピボットスタン
ドとしてホットストリップミルのマスフローの基準をN
o、 1スタンドとし、AGCや速度手動介入時に実行
されるサクセシブ制御がNo、1スタンドを基準に下流
スタンドに向かってなされるようにすることにより、N
o、 1スタンドの速度を不変とする。したがって、連
続鋳造設備とホットストリップミル間の速度同期が容易
となり、ホットストリップミル入り側の張力変動が防止
され、均一な製品が得られる。
In the present invention, the mass flow standard of the hot strip mill is set to N by using the No. 1 stand as a pivot stand.
o, 1 stand, and the successive control executed during AGC or speed manual intervention is performed toward the downstream stand with the No. 1 stand as a reference.
o. The speed of one stand remains unchanged. Therefore, speed synchronization between the continuous casting equipment and the hot strip mill is facilitated, tension fluctuations on the entry side of the hot strip mill are prevented, and a uniform product can be obtained.

〔実施例〕〔Example〕

本発明によるタンデムミルの速度制御装置の一実施例を
備えた連続鋳造圧延設備の系統構成の一例の概略を第2
図に示す1図において、Aは連続鋳造設備、Bは幅圧延
設備、Cは4タンデムホツトストリツプミルである。
The outline of an example of the system configuration of a continuous casting and rolling facility equipped with an embodiment of the tandem mill speed control device according to the present invention is shown in the second section.
In Figure 1, A is a continuous casting facility, B is a width rolling facility, and C is a 4 tandem hot strip mill.

これら一連の設備の中で生産速度を規定しているのは、
最も前の工程にある連続鋳造設備Aである。すなわち1
幅圧延設備Bの速度は鋳造設備Aの出側速度で決定され
、ホットストリップミルCの圧延速度は幅圧延設備Bの
出側速度で決定されてしまう、ここで圧延速度が決定さ
れてしまうという意味は、ミル入り側張力をTeとする
と、次のように表されるということである。
Among these series of equipment, the production speed is regulated by:
This is continuous casting equipment A, which is in the earliest process. i.e. 1
The speed of width rolling equipment B is determined by the exit speed of casting equipment A, and the rolling speed of hot strip mill C is determined by the exit speed of width rolling equipment B, which is where the rolling speed is determined. The meaning is that if the tension on the mill entry side is Te, it is expressed as follows.

re=EXAX (Vb−Vme)  −−(1)ただ
し、Eはヤング率、Aは材料断面積、vbは幅圧延設備
出側速度、Vmeはミル入り側速度である。
re=EXAX (Vb-Vme) --(1) where E is Young's modulus, A is the cross-sectional area of the material, vb is the width rolling equipment exit speed, and Vme is the mill entry speed.

このミル入り側張力を一定に保たなければ、満足のゆく
圧延作業を実行できないことは公知の事実である。vb
は既に鋳造設備Aの出側速度で規定された一定速度で運
転されているから、ミル入り側張力Toを一定に保つに
は、ミル入り側速度Vmeを一定速度にする必要がある
It is a well-known fact that unless this tension at the mill entry side is kept constant, a satisfactory rolling operation cannot be performed. vb
has already been operated at a constant speed defined by the outlet speed of the casting equipment A, so in order to keep the tension To on the mill entry side constant, it is necessary to keep the mill entry speed Vme constant.

Vms=ybXVr、        −(2)ただし
、γ−は後進率、Vr□はNo、 1スタンドロ一ル周
速である。すなわち、No、 1スタンドロ一ル周速を
変化させないようにする必要がある。
Vms=ybXVr, -(2) However, γ- is the reverse rate, and Vr□ is No. 1 stand roll circumferential speed. That is, No. It is necessary not to change the circumferential speed of one stand roll.

しかし、従来のタンデムミルの速度制御装置は、前述の
特公昭58−52448号または特開昭61−5293
1号にも示されているように、最終スタンドをピボット
スタンドとしており、あるスタンドの負荷を低減するた
めスタンド速度を変化させると、上流側に速度変化が波
及するサクセシブ制御機能を備えている。このように下
流の速度変化が上流に波及する速度制御装置では、ミル
入り側速度Vmaを一定に保てない。
However, the speed control device of the conventional tandem mill is disclosed in the above-mentioned Japanese Patent Publication No. 58-52448 or Japanese Patent Application Laid-Open No. 61-5293.
As shown in No. 1, the final stand is a pivot stand, and when the stand speed is changed to reduce the load on a certain stand, it has a successive control function that spreads the speed change to the upstream side. In a speed control device in which a downstream speed change spreads upstream, the mill entry side speed Vma cannot be kept constant.

そこで、これを解決する手段として本発明が提案する制
御装置の具体的構成を第2図に示す0本例は4スタンド
ホツトストリツプミルを対象としている例である0図に
おいて、1は全スタンドの速度を加減させるマスタレオ
スタットMRH121〜24はスタンドスピードレオス
タット5SRH131〜34はオペレータが手動介入に
より設定するまたはAGCにより自動尚に設定される補
正信号としてのサクセシブ量の設定器、111〜143
は乗算器、211〜241は加算器、311〜341は
割算器、REFI〜4は各スタンドへの速度指令値であ
る。
Therefore, as a means to solve this problem, the specific configuration of the control device proposed by the present invention is shown in FIG. 2. This example is for a 4-stand hot strip mill. Master rheostats MRH121-24 for increasing or decreasing the speed of the stand are stand speed rheostats 5SRH131-34 are setters 111-143 for successive amounts as correction signals that are set by the operator through manual intervention or automatically set by the AGC.
is a multiplier, 211 to 241 are adders, 311 to 341 are dividers, and REFI to 4 are speed command values to each stand.

ここで、各スタンドの速度指令値は、 REF1= (1+CV1)xSSRHlxMRH・・
・(3) REF2= (1+CV2)XSSRH2XC5VIX
MRH・(4) REF3= (1+cV3)xssRH3xC8V2X
MRH・(5) REF4= (1+CV4)XSSRH4XC8V3X
MRH・(6) となり、各式中のC3V(i−1)がサクセシブ補正量
である。No、2スタンドでサクセシブ制御CV2が発
生すると、 C3V2= (1+CV2)XSSRH2XC5VI/
5SRH2−(7) という補正量がNo、3スタンドに与えられる。
Here, the speed command value of each stand is REF1= (1+CV1)xSSRHlxMRH...
・(3) REF2= (1+CV2)XSSRH2XC5VIX
MRH・(4) REF3= (1+cV3)xssRH3xC8V2X
MRH・(5) REF4= (1+CV4)XSSRH4XC8V3X
MRH·(6) where C3V(i-1) in each equation is the successive correction amount. No. When successive control CV2 occurs in stand 2, C3V2= (1+CV2)XSSRH2XC5VI/
A correction amount of 5SRH2-(7) is given to No. 3 stand.

No、3スタンドではさらに。No, even more in the 3rd stand.

C3V3= (1+CV3)XSSRH3XC5V2/
5SRH3−(8) としてN004スタンドに補正量が与えられる。
C3V3= (1+CV3)XSSRH3XC5V2/
A correction amount is given to the N004 stand as 5SRH3-(8).

すなわち、No、2スタンドのサクセシブ制御量C3V
2が下流に向かって送られ、各スタンドが次々と適正に
補正されていく。
In other words, the successive control amount C3V of No. 2 stands
2 is sent downstream, and each stand is appropriately corrected one after another.

その結果°、AGC等でNO,2スタンドに補正量が投
入されても、No、1スタンドの入り側速度を変化させ
ずに、ストリップミル全体のマスフローバランスを保ち
ながら、タンデムミルの速度を制御するタンデムミルの
速度制御装置が得られる。
As a result, even if a correction amount is input to the No. 2 stand by AGC, etc., the speed of the tandem mill is controlled without changing the entry side speed of the No. 1 stand, while maintaining the mass flow balance of the entire strip mill. A speed control device for a tandem mill is obtained.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、ミル内の張力変化等に対処す゛るため
に、あるスタンド速度を変化させたときに、マスフロー
の変化を防ぎ、タンデムミル入り側第1スタンドの速度
を変えないタンデムミルの速度制御装置が得られる。
According to the present invention, in order to cope with changes in tension within the mill, when a certain stand speed is changed, changes in mass flow are prevented and the speed of the first stand on the entry side of the tandem mill is not changed. A control device is obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明によるタンデムミルの速度制御装置の一
実施例の具体的構成を示す図、第2図は第1図装置を備
えた連続鋳造圧延設備の系統構成を示す図である。 1・・・マスタレオスタットMRH,2・・・スタンド
スピードレオスタット5SRH13・・・サクセシブ量
設定器Cv、100・・・乗算器、200・・・加算器
、300・・・割算器。
FIG. 1 is a diagram showing a specific configuration of an embodiment of a speed control device for a tandem mill according to the present invention, and FIG. 2 is a diagram showing a system configuration of continuous casting and rolling equipment equipped with the device shown in FIG. 1... Master rheostat MRH, 2... Stand speed rheostat 5SRH13... Successive amount setter Cv, 100... Multiplier, 200... Adder, 300... Divider.

Claims (1)

【特許請求の範囲】 1、それぞれの速度を制御する手段を備えた複数のスタ
ンドからなるタンデムミルの入り側にタンデムミル入り
側速度を規定する設備を含む圧延設備に用いるタンデム
ミルの速度制御装置において、 前記タンデムミルの入り側第1スタンドを前記規定速度
で作動するピボットスタンドとし、第iスタンドの速度
を補正したときのサクセシブ制御量を第iスタンド速度
制御手段から第i+1以降のスタンドの速度制御手段に
供給する手段を備えたことを特徴とするタンデムミルの
速度制御装置。
[Scope of Claims] 1. A speed control device for a tandem mill used in rolling equipment including equipment for regulating the tandem mill entry speed on the entry side of a tandem mill consisting of a plurality of stands each equipped with means for controlling the speed of each stand. In, the first stand on the entry side of the tandem mill is a pivot stand that operates at the specified speed, and the successive control amount when the speed of the i-th stand is corrected is determined from the i-th stand speed control means as the speed of the i+1th and subsequent stands. A speed control device for a tandem mill, characterized by comprising means for supplying a supply to the control means.
JP63037158A 1988-02-19 1988-02-19 Tandem mill speed controller Expired - Lifetime JPH0773734B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63037158A JPH0773734B2 (en) 1988-02-19 1988-02-19 Tandem mill speed controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63037158A JPH0773734B2 (en) 1988-02-19 1988-02-19 Tandem mill speed controller

Publications (2)

Publication Number Publication Date
JPH01215406A true JPH01215406A (en) 1989-08-29
JPH0773734B2 JPH0773734B2 (en) 1995-08-09

Family

ID=12489791

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63037158A Expired - Lifetime JPH0773734B2 (en) 1988-02-19 1988-02-19 Tandem mill speed controller

Country Status (1)

Country Link
JP (1) JPH0773734B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7233359B2 (en) 2002-12-13 2007-06-19 Canon Kabushiki Kaisha Image sensing apparatus having image signals generated from light between optical elements of an optical element array
JP2017529245A (en) * 2014-09-24 2017-10-05 エス・エム・エス・グループ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング Method and casting and rolling equipment for casting and rolling endless strand material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56109106A (en) * 1980-01-30 1981-08-29 Nippon Steel Corp Controlling method for speed of tandem rolling mill
JPS56114524A (en) * 1980-02-16 1981-09-09 Nippon Steel Corp Speed control device of continuous rolling mill

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56109106A (en) * 1980-01-30 1981-08-29 Nippon Steel Corp Controlling method for speed of tandem rolling mill
JPS56114524A (en) * 1980-02-16 1981-09-09 Nippon Steel Corp Speed control device of continuous rolling mill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7233359B2 (en) 2002-12-13 2007-06-19 Canon Kabushiki Kaisha Image sensing apparatus having image signals generated from light between optical elements of an optical element array
JP2017529245A (en) * 2014-09-24 2017-10-05 エス・エム・エス・グループ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング Method and casting and rolling equipment for casting and rolling endless strand material

Also Published As

Publication number Publication date
JPH0773734B2 (en) 1995-08-09

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