JPS6045007B2 - Different peripheral speed rolling method - Google Patents
Different peripheral speed rolling methodInfo
- Publication number
- JPS6045007B2 JPS6045007B2 JP56003347A JP334781A JPS6045007B2 JP S6045007 B2 JPS6045007 B2 JP S6045007B2 JP 56003347 A JP56003347 A JP 56003347A JP 334781 A JP334781 A JP 334781A JP S6045007 B2 JPS6045007 B2 JP S6045007B2
- Authority
- JP
- Japan
- Prior art keywords
- speed
- rolling
- rate
- different
- mill
- 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.)
- Expired
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
- B21B37/46—Roll speed or drive motor control
-
- 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
- B21B2275/00—Mill drive parameters
- B21B2275/02—Speed
- B21B2275/04—Roll speed
- B21B2275/05—Speed difference between top and bottom rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
- B21B41/08—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters without overall change in the general direction of movement of the work
- B21B41/10—Loop deflectors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
Description
【発明の詳細な説明】
この発明は、タンデムに配置された圧延機列中の１以上
の任意の圧延機において、異周速圧延を行なう方法に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for performing different circumferential speed rolling in one or more arbitrary rolling mills in a row of rolling mills arranged in tandem.
′ たとえば、鋼ストリップのような金属材料を上作業
ロールと下作業ロールの周速度を相違させて圧延する所
謂異周速圧延が材料の特性を改善することがある（特願
昭５４−６００５７号）。' For example, so-called different circumferential speed rolling, in which a metal material such as a steel strip is rolled at different circumferential speeds between upper and lower work rolls, can improve the properties of the material (Japanese Patent Application No. 54-60057). ).
このような異周速圧延は既に米国特許２１３９８７２夕
号公報に開示されている。処で、１同周速圧延即ち異速
率零の圧延中に、タンデムミルの圧延機列中の何れか１
台以上の圧延機を異周速圧延に変える場合、或は、一般
的に２幾つかの圧延機で異速率をＸｊからＸｊ’に変更
す。Such different circumferential speed rolling has already been disclosed in US Pat. No. 2,139,872. During rolling at the same circumferential speed, that is, rolling at a different speed ratio of zero, any one of the rolling mill rows of the tandem mill
When changing rolling mills of more than one millimeter to different circumferential speed rolling, or generally changing the different speed rate of two or more rolling mills from Xj to Xj'.
るような場合；たとえば１の場合、通板時から異周速に
すると、反りなどにより通板トラブルを生じる恐れがあ
るのでｊスタンドに材料が噛込まれた後に、ｊ−１スタ
ンドを異周速にするなどしてトラブルを防止する。・５
２の場合、先行ストリップの尾端部と後行ストリップの
頭端部や溶接などにより接続して数コイルを連続して圧
延する場合、各ストリップの幅や厚さが異なるときは、
ミルのハードウェア（パワー等）の制約から先行ストリ
ップと後行ストリップとで異速率を変更しようとすると
き、異速率が変化すると、第１図ａおよびｂに示すよう
に、圧延荷重や先進率が変化するため、圧延材の速度が
変わり、タンデムミル全体としての速度バランスがくず
れ、張力が変動し、ストリップの幅や厚さなどの変動を
来たす。For example, in case 1, if the peripheral speed is changed from the time of threading, there is a risk of threading problems due to warping, etc., so after the material is caught in the J stand, the J-1 stand should be changed to a different peripheral speed. Prevent problems by speeding up the process.・5
In case 2, when several coils are connected in succession by connecting the tail end of the leading strip and the head end of the trailing strip by welding, etc., and the width and thickness of each strip is different,
When trying to change the different speed rates between the leading strip and the trailing strip due to mill hardware (power, etc.) constraints, changing the different speed rates will cause the rolling load and leading rate to change as shown in Figure 1 a and b. As a result, the speed of the rolled material changes, the speed balance of the tandem mill as a whole is disrupted, the tension fluctuates, and the width and thickness of the strip change.
従つて、圧延機列全体の速度制御と異周速圧延を行なお
うとする圧延機における異速率制御とは互に密接な関連
をもつていなければならない。Therefore, the speed control of the entire rolling mill train and the variable speed rate control in the rolling mill that is intended to carry out rolling at different circumferential speeds must have a close relationship with each other.
処で、異速率を変更（零→Ｘへ或はＸ一Ｘ″へ）する場
合、圧延材の速度を変更することなく異速率を変更でき
れば、ミル全体の速度制御と異速率制御を独立に行なう
ことができる。When changing the different speed rate (from zero to X or from X to can be done.
この発明は、この課題を解決することを目的としてなさ
れた。その要旨とする処は圧延機を複数台タンデムに配
置した圧延機列によつて、金属材料の連続圧延を行なう
に際し、先ず、何れの圧延機においても異速率を零とし
てミルセットアップおよび圧延中の張力制御、板厚制御
、ルーパ高さ制御を行なうシステムを作動せしめて圧延
を行ない、次いでその際前記システムから指令値として
出力されるｊスタンドのロール周速ＶＯｊｌロールＳＯ
ｊに基づ゛き、但し
■Ｈｊ；高速側ロール周速
ＶＬｊ；低速側ロール周速
Ｋｊ；ｊスタンドのミル剛性
αｊ；異速率による高速側先進率の変化率βｊ；異速率
によるｊスタンドの圧延荷重の 変化率Ｘｊ；異速
率、Ｘｊ＝ＶＨｊ／ＶＬｊ−１Ｐ０ｊ；Ｘｊ＝０のとき
のＡＧＣ基準荷重ＭＯｊ；Ｘｊ＝０のときの塑性係数
となるように、高速側ロール周速、低速側ロール周速、
ロール隙および塑性係数を修正するとともに、Ｎ℃基準
荷重をＰＯｊ−ＢｊＸｊに変更して、任意のｊスタンド
において異速率Ｘｊの異周速圧延を行なうようにしたこ
とを特徴とする異周速圧延方法にある。This invention was made with the aim of solving this problem. The gist of this is that when continuous rolling of metal materials is carried out using a row of rolling mills arranged in tandem, the mill setup and rolling process must first be carried out by setting the different speed ratio to zero in each rolling mill. Rolling is performed by activating a system for tension control, plate thickness control, and looper height control, and then the roll circumferential speed of the j stand VOjl roll SO outputted from the system as a command value.
Based on j, however, ■ Hj; high-speed side roll circumferential speed VLj; low-speed side roll circumferential speed Kj; mill rigidity αj of stand j; rate of change in high-speed advance rate due to different speed rates βj; Rate of change in rolling load Xj; Different speed rate, roll peripheral speed,
Different circumferential speed rolling characterized by correcting the roll gap and plasticity coefficient and changing the N°C reference load to POj-BjXj to perform different circumferential speed rolling at different speed rates Xj in arbitrary j stands It's in the method.
第１図ａおよび第１図ｂに、異周速圧延を行なうときの
異速率と圧延荷重、先進係数、後進係数との関係を示す
。FIG. 1a and FIG. 1b show the relationship between the different speed ratio, the rolling load, the advancing coefficient, and the backward moving coefficient when performing different circumferential speed rolling.
第１図Ａ，ｂから明らかなように異速率と圧延荷重、先
進係数、後進係数との間には線型的な関ノ係がある。As is clear from FIGS. 1A and 1B, there is a linear relationship between the different speed ratio, rolling load, advancing coefficient, and reversing coefficient.
即ち、
ＦＨ＝ＦＯ−αＸ
Ｐ＝ＰＯ−βＸ
但し、
ＦＨ；高速側先進率
ＦＯ：異速率零のときの先進率
α；異速率の変化に対応する先進率の変化率Ｐ；異速
率Ｘのときの圧延荷重ＰＯ；異速率零のときの圧延荷重
β；異速率の変化に対応する荷重の変化率Ｘ＝異速率
、Ｘ＝■日／■１−１ ■８；高速側ロール周速
■，；低速側ロール周速
なる関係である。That is, FH = FO - α Rolling load PO at that time; Rolling load when the different speed rate is zero β; Rate of change in load corresponding to change in different speed rate X = Different speed rate, , ; The relationship is the peripheral speed of the roll on the low speed side.
異速率と、圧延荷重、先進率との間の関係の線型性を利
用して、圧延機列の速度制御と、圧延機列中の任意の圧
延機における異速率を変化させる制御を独立に行なうに
は、異速率を変化させようとする圧延機における材料の
出側速度Ｖ２を、異速率を変化させないときの材料の出
側速度Ｖ２から変化させることなく、異速率を変化させ
得ることが必要である。Utilizing the linearity of the relationship between the different speed rate, rolling load, and advance rate, the speed control of the rolling mill row and the control to change the different speed ratio of any rolling mill in the rolling mill row are performed independently. In order to change the different speed rate, it is necessary to be able to change the different speed rate without changing the material outlet speed V2 of the rolling mill where the different speed rate is to be changed from the material outlet speed V2 when the different speed rate is not changed. It is.
第２図Ａ，ｂに異周速圧延を行なうときの高速側および
低速側の中立角、先進率の変化の模様を示す。Figures 2A and 2b show patterns of changes in the neutral angle and advance rate on the high speed side and low speed side when performing rolling at different circumferential speeds.
第２図Ａ，ｂにおいて■１は入側材料速度Ｖ２は出側側
材料速度、０Ｌは低速側中立角、θｏは高速側中立角、
ＦＬは異速率Ｘのときの低速ロールに対する先進率、Ｆ
Ｈは異速率Ｘのときの高速ロールに対する先進率である
。さて、
であるから
■２＝（１＋ＦＯ−αＸ）■Ｈ ・・・（３
）である。In Figures 2A and b, ■1 is the material speed on the inlet side, V2 is the material speed on the outlet side, 0L is the neutral angle on the low speed side, θo is the neutral angle on the high speed side,
FL is the advance rate for low speed roll when the different speed rate is X, F
H is the advance rate for a high speed roll when the different speed rate is X. Now, since ■2=(1+FO−αX)■H...(3
).
また、この圧延を等価な、つまり材料速度が等しい同周
速圧延をみなすと、但し、ＶＯ；等価ロール周速
である。Further, if this rolling is considered to be equivalent, that is, rolling at the same circumferential speed where the material speed is the same, then VO: equivalent roll circumferential speed.
式（３），（４）より
ＦＯく１より
また、低速側ロール周速は、異速率の定義、Ｘ＝（ＶＨ
−■Ｌ）／■，よりてある。From formulas (3) and (4), the peripheral speed of the roll on the low speed side is determined by the definition of the different speed ratio, X = (VH
-■L)/■, it is closer.
以上のことから、異速率Ｘの圧延を同周速圧延とみなし
、目標のロール周速■。From the above, rolling at different speed ratios X is regarded as same circumferential speed rolling, and the target roll circumferential speed ■.
が与えられれば、（５），（６）式で求まる速度に高速
、低速ロールを制御すれば、異速率が変つても、材料速
度Ｖ２を変えることなく異周速圧延を実現できる。一方
、異速率が変化すると、既に述べたように圧延荷重がＰ
＝ＰＯ−βＸなる特性に従つて変化するから、圧延中の
ロール隙が変化し、それによつて材料の出側速度Ｖ２が
変化する。If V2 is given, if the high speed and low speed rolls are controlled to the speed determined by equations (5) and (6), even if the different speed ratio changes, different circumferential speed rolling can be realized without changing the material speed V2. On the other hand, when the different speed ratio changes, the rolling load P
=PO-βX, the roll gap during rolling changes, thereby changing the exit speed V2 of the material.
従つて異速率を変化せしめようとするときは、ロール隙
を同時に変化させる（フイードフオワード）必要がある
。Therefore, when changing the speed ratio, it is necessary to simultaneously change the roll gap (feed forward).
それは、次のように遂行される。であるから、荷重の変
化によるロール隙の所要変更量ΔＳは、従つて、ロール
隙Ｓを、
に変更しなければならない。It is accomplished as follows. Therefore, the required change amount ΔS in the roll gap due to a change in load is, therefore, the roll gap S must be changed as follows.
但し、
ＰＯ：Ｘ＝０（同周速圧延）のときの圧延荷重ＳＯ；Ｘ
＝Ｏ（同周速圧延）のときのロール隙Ｋ；ミル剛性一般
に、第３図に示すように、ある異速率ＸＯでの異周速圧
延から、異速率をＸ１に変化させたときの圧延荷重およ
び出側板厚の変化が生じる。However, rolling load SO; when PO:X=0 (same peripheral speed rolling)
= Roll gap K when O (same circumferential speed rolling); Mill rigidity Generally, as shown in Fig. 3, rolling when the different speed rate is changed from different circumferential speed rolling at a certain different speed rate XO to X1 Changes in load and exit plate thickness occur.
第３図において、１は異速率ＸＯのときの塑性曲線、２
は異速玲■１のときの塑性曲線、３，４は圧延時のロー
ル隙の変化を示す弾性曲線、Ｈ１は入側板厚、↓は異速
率Ｘ。のときの出側板厚Ｈ２″は異速率Ｘ１のときの出
側板厚である。つまり、異速惇■。、ロール隙Ｓ。で出
側板厚Ｈ２が得られる圧延において、ロール隙を変えず
に異速率をＸ１に変更すると出側板厚はＨ２″になる。
従つて出側板厚をＨ２にするためには、ロール隙をＳ１
にしなければならない。ここで、
但し、Ｋ；ミル剛性
ＰＯ，Ｐｌは、前述の如く
但し、ＰＥ；Ｘ＝０のときの圧延荷重
従つて、
ノ この（１２），（１３）式が（８），（９）式の一
般式である。In Fig. 3, 1 is the plasticity curve when the speed ratio is XO, 2
is the plasticity curve when the speed is different from 1, 3 and 4 are the elastic curves showing the changes in the roll gap during rolling, H1 is the entrance plate thickness, and ↓ is the different speed ratio X. The exit side plate thickness H2'' at the time of is the exit side plate thickness when the different speed ratio When the different speed rate is changed to X1, the outlet side plate thickness becomes H2''.
Therefore, in order to make the exit side plate thickness H2, the roll gap should be set to S1.
must be done. Here, K; Mill rigidity PO, Pl is as mentioned above, PE; Rolling load when X=0 Therefore, Equations (12) and (13) are as follows This is the general formula of Eq.
即ちＸ。＝０，Ｘ１＝Ｘとすれば（８），（９）式とな
る。このように、設定異速率を変更するときはロール隙
も変更する必要がある。That is, X. =0 and X1=X, equations (8) and (9) are obtained. In this way, when changing the set different speed rate, it is also necessary to change the roll gap.
同時に、圧延材の温７度変動や厚み変動に対して出側板
厚を制御しなければならない。その場合には、第３図か
られかるように、たとえばＢＩＳＲＡ方式のＡＧＣ（板
厚自動制御）を行なう場合では、基準荷重をＰ。からＰ
１に変更しなければならない。さらにＡＧＣにおけるフ
ロール隙の変更は、但し、Δ鴇；出側板厚偏差
Ｋ；ミル剛性係数
Ｍ；塑性係数
Ｃ；定数
ところが、第３図に示すように、塑性曲線が１から２に
変化する。At the same time, it is necessary to control the thickness of the outlet plate in response to temperature fluctuations of 7 degrees and thickness fluctuations of the rolled material. In that case, as shown in Fig. 3, for example, when performing BISRA type AGC (automatic plate thickness control), the reference load is set to P. From P
Must be changed to 1. Further, when the flow gap in AGC is changed, ΔT; Output side plate thickness deviation K; Mill stiffness coefficient M; Plasticity coefficient C; Constant However, as shown in FIG. 3, the plasticity curve changes from 1 to 2.
塑性曲線１および２の塑性係数Ｍｌ，Ｍ２は近似的に、
同周速圧延時には
であるから
このように、異速率を変更するときには、その異速率に
応じて口ビル隙、基準荷重、塑性係数をも変更する必要
がある。The plasticity coefficients Ml and M2 of plasticity curves 1 and 2 are approximately as follows:
Since this is the case during rolling at the same circumferential speed, when changing the different speed rate, it is also necessary to change the mouth bill gap, reference load, and plastic coefficient according to the different speed rate.
以上述べたようにして、圧延機列中の任意の１以上の圧
延機の異速率を、圧延機列の速度制御系と独立の系て制
御することがてきる。As described above, the different speed rates of any one or more rolling mills in the rolling mill row can be controlled independently of the speed control system of the rolling mill row.
次に、この発明を実施するときの態様を説明する。Next, modes for carrying out the invention will be described.
第４図に、この発明を実施するときの制御系（ハードウ
ェアシステム）を示す。FIG. 4 shows a control system (hardware system) for implementing the present invention.
第４図において、１１は圧延材、１２は作業ロール、１
３，１４は駆動モータ、１５は圧下装置、１６，１７は
モータ速度制御装置、１８は圧下位置ホｌ御装置、１９
は板厚制御装置、２０はスタンド間張力制御装置、２１
はスタンド間ルーパ高さ制御装置、２２は異周速制御装
置である。In FIG. 4, 11 is a rolled material, 12 is a work roll, 1
3 and 14 are drive motors, 15 is a lowering device, 16 and 17 are motor speed control devices, 18 is a lowering position control device, 19
20 is a plate thickness control device, 20 is an inter-stand tension control device, 21
2 is an inter-stand looper height control device, and 22 is a different circumferential speed control device.
このシステムの動作を説明する。先ず、初期セットアッ
プ時に、図示しない上位設定演算装置により、異速率Ｘ
＝０として各種演算がなされ、ミルスピード■ｓおよび
初期ロール隙Ｓ２が出力され、圧下位置制御装置１８に
より、圧下装置１５、速度制御装置１６，１７によりモ
ーータ１３，１４が運転され、設定値にセットされる。The operation of this system will be explained. First, during initial setup, a higher-level setting calculation device (not shown) calculates the different speed rate
= 0, various calculations are performed, the mill speed s and the initial roll gap S2 are output, and the rolling position control device 18 operates the rolling device 15 and the speed controlling devices 16 and 17 drive the motors 13 and 14 to reach the set value. Set.
若し通板時点から異周速圧延を行なうときは、前述のＸ
＝０とした設定演算によるＶｓ，Ｓｓを出力後、希望す
る異速率Ｘ（≠Ｏ）を異周速制御装置２２に入力すれば
（５），（６），（８），（１５）式より高速ロール周
速■８、低速ロール周速■５、ロール隙変更量ΔＳｘお
よび塑性係数Ｍｊが異周速制御装置２２により演算され
指令或は設定される。If rolling at different circumferential speeds is performed from the time of sheet passing, the above
After outputting Vs and Ss based on the setting calculation with = 0, if the desired different speed rate X (≠O) is input to the different circumferential speed control device 22, equations (5), (6), (8), and (15) are obtained. The higher speed roll peripheral speed ■8, the lower speed roll peripheral speed ■5, the roll gap change amount ΔSx, and the plasticity coefficient Mj are calculated and commanded or set by the different peripheral speed control device 22.
ここでは、通板後任意の時刻に異速率Ｘ（≠０）となる
ように、当該スタンドコントロールする場合を考える。Here, we will consider the case where the stand is controlled so that the different speed rate becomes X (≠0) at an arbitrary time after threading.
その場合は、希望する時刻に異速率Ｘ（≠０）を異周速
制御装置２２に入力すれはロール周速、ロール隙が異周
速制御装置２２からの指令により変化し、さらにＡＧＣ
装置１９に７は新たな基準荷重と塑性係数が設定される
。このとき、張力制御装置２０、ルーパ高さ制御装置１
１およびＮ℃装置１９はこれまでと同様に、同周速圧延
による圧延が行なわれているとして制御動作を続けれぱ
よい。ノ この発明は、以上説明したように構成しかつ
作用せしめるようにしたから、圧延機列中の任意の１以
上の圧延機における異速率を変化せしめ制御することを
、圧延機列の速度制御システムに独立に行なうことがで
き、制御システムを簡便にする・ことを可能にし、安定
した圧延を行なうことを可能にする効果がある。In that case, if you input the different speed rate
7, a new reference load and plasticity coefficient are set in the device 19. At this time, the tension control device 20, the looper height control device 1
1 and the N° C. device 19 may continue their control operations as before, assuming that rolling is being performed at the same circumferential speed. Since this invention is constructed and operated as described above, it is possible to change and control the different speed ratios of any one or more rolling mills in a rolling mill row by using a speed control system for a rolling mill row. This has the effect of simplifying the control system and making it possible to perform stable rolling.
第１図Ａ，ｂは、異周速圧延を行なうときの異速率と、
圧延荷重、先進係数、後進係数との関係゛を示す図、第
２図Ａ，ｂは、異周速圧延を行なうときの高速側、低速
側の中立角、異速率を変化させたときの高速側、低速側
の先進率の変化の模様を示す図である。
第３図は異速率の変化による圧延荷重、出口厚の変化を
示す図てある。第４図は本発明の実施例を示すものてあ
る。１１・・・・・・圧延材、１２・・・・・・作業ロ
ール、１３，１４・・・・・・駆動モータ、１５・・・
・・・圧下装置、１６，１７・・・・・・モータ速度制
御装置、１８・・・・・・圧下位置制御装置、１９・・
・・・・板厚制御装置、２０・・・・・・スタンド間張
力制御装置、２１・・・・・スタンド間ルーパ高さ制御
装置、２２・・・・・異周速制御装置。Figures A and b show the different speed rates when performing different circumferential speed rolling,
Figures 2A and b, which show the relationship between rolling load, leading coefficient, and backward coefficient, show the relationship between the rolling load, the advancing coefficient, and the backward coefficient. FIG. 4 is a diagram showing a pattern of changes in the advanced rate on the high speed side and the low speed side. FIG. 3 is a diagram showing changes in rolling load and outlet thickness due to changes in speed ratio. FIG. 4 shows an embodiment of the present invention. 11... Rolled material, 12... Work roll, 13, 14... Drive motor, 15...
... Rolling down device, 16, 17... Motor speed control device, 18... Rolling down position control device, 19...
... Plate thickness control device, 20 ... Inter-stand tension control device, 21 ... Inter-stand looper height control device, 22 ... Different circumferential speed control device.
Claims (1)
て、金属材料の連続圧延を行なうに際し、先ず、何れの
圧延機においても異速率を零としてミルセットアップお
よび圧延中の張力制御、板厚制御、ルーパ高さ制御を行
なうシステムを作動せしめて圧延を行ない、次いでその
際前記システムから指令値として出力されるｊスタンド
のロール周速Ｖｏｊ、ロール隙Ｓｏｊに基づき、Ｖ＿Ｈ
ｊ＝Ｖｏｊ／（１−αｊＸｊ） Ｖ＿Ｌｊ＝Ｖ＿Ｈｊ／（１＋Ｘｊ） Ｓｊ＝Ｓｏｊ＋βｊＫｊＸｊ Ｍｊ＝（１−〔βｊ〕／〔Ｐｏｊ〕Ｘｊ）Ｍｏｊ但しＶ
＿Ｈｊ；高速側ロール周速 Ｖ＿Ｌｊ；低速側ロール周速 Ｋｊ；ｊスタンドのミル剛性 αｊ；異速率による高速側先進率の変化率βｊ；異速率
によるｊスタンドの圧延荷重の変化率Ｘｊ；異速率、Ｘ
ｊ＝Ｖ＿Ｈｊ／Ｖ＿Ｌｊ−１Ｐｏｊ；Ｘｊ＝０のときの
ＡＧＣ基準荷重Ｍｏｊ；Ｘｊ＝０のときの塑性係数 となるように高速側ロール周速、低速側ロール周速、ロ
ール隙および塑性係数を修正するとともに、ＡＧＣ基準
荷重をＰｏｊ−βｊＸｊに変更して任意のｊスタンドに
おいて異速率Ｘｊの異周速圧延を行なうようにしたこと
を特徴とする異周速圧延方法。[Scope of Claims] 1. When continuous rolling of a metal material is carried out using a rolling mill row in which a plurality of rolling mills are arranged in tandem, first, in each rolling mill, the different speed ratio is set to zero, and the mill setup and rolling process are performed. A system for tension control, sheet thickness control, and looper height control is activated to perform rolling, and then V_H is determined based on the roll circumferential speed Voj and roll gap Soj of the j stand, which are output as command values from the system at that time.
j=Voj/(1-αjXj) V_Lj=V_Hj/(1+Xj) Sj=Soj+βjKjXj Mj=(1-[βj]/[Poj]Xj)MojHowever, V
_Hj; High-speed side roll circumferential speed V_Lj; Low-speed side roll circumferential speed Kj; Mill rigidity αj of j stand; Rate of change in high-speed advance rate due to different speed rate βj; Rate of change in rolling load of j stand due to different speed rate Xj; Different speed rate ,X
j=V_Hj/V_Lj-1Poj; AGC standard load Moj when Xj=0; Correct the high-speed side roll circumferential speed, low-speed side roll circumferential speed, roll gap, and plasticity coefficient so that it becomes the plasticity coefficient when Xj=0. At the same time, the AGC standard load is changed to Poj - βj
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56003347A JPS6045007B2 (en) | 1981-01-14 | 1981-01-14 | Different peripheral speed rolling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56003347A JPS6045007B2 (en) | 1981-01-14 | 1981-01-14 | Different peripheral speed rolling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57118803A JPS57118803A (en) | 1982-07-23 |
| JPS6045007B2 true JPS6045007B2 (en) | 1985-10-07 |
Family
ID=11554817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56003347A Expired JPS6045007B2 (en) | 1981-01-14 | 1981-01-14 | Different peripheral speed rolling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6045007B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6325912U (en) * | 1986-08-04 | 1988-02-20 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5977364A (en) * | 1982-10-26 | 1984-05-02 | Toshiba Corp | Speed reference arithmetic unit |
-
1981
- 1981-01-14 JP JP56003347A patent/JPS6045007B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6325912U (en) * | 1986-08-04 | 1988-02-20 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57118803A (en) | 1982-07-23 |
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