JPH0813371B2 - Plate thickness control method - Google Patents

Plate thickness control method

Info

Publication number
JPH0813371B2
JPH0813371B2 JP1082413A JP8241389A JPH0813371B2 JP H0813371 B2 JPH0813371 B2 JP H0813371B2 JP 1082413 A JP1082413 A JP 1082413A JP 8241389 A JP8241389 A JP 8241389A JP H0813371 B2 JPH0813371 B2 JP H0813371B2
Authority
JP
Japan
Prior art keywords
thickness
rolled
edge
rolling
rolling 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 - Lifetime
Application number
JP1082413A
Other languages
Japanese (ja)
Other versions
JPH02258107A (en
Inventor
淳也 早川
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.)
Nippon Steel Nisshin Co Ltd
Original Assignee
Nisshin Steel Co 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 Nisshin Steel Co Ltd filed Critical Nisshin Steel Co Ltd
Priority to JP1082413A priority Critical patent/JPH0813371B2/en
Publication of JPH02258107A publication Critical patent/JPH02258107A/en
Publication of JPH0813371B2 publication Critical patent/JPH0813371B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16Control of thickness, width, diameter or other transverse dimensions
    • B21B37/165Control of thickness, width, diameter or other transverse dimensions responsive mainly to the measured thickness of the product

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、たとえば連続式タンデム圧延機などの圧延
機を用いて、被圧延材の板厚を制御する方法に関する。
TECHNICAL FIELD The present invention relates to a method for controlling the plate thickness of a material to be rolled using a rolling mill such as a continuous tandem rolling mill.

従来の技術 通常、被圧延材の板プロフイール、すなわち板幅方向
の板厚分布は、板幅の中央で最も板厚が大きく、左右の
エツジに向つて板厚が減少するようにクラウンを有して
いる。また両エツジの板厚が一致せず、ウエツジと呼ば
れる状態となつていることもある。
Conventional technology Normally, the strip profile of the material to be rolled, that is, the strip thickness distribution in the strip width direction, has the largest strip thickness at the center of the strip width and has a crown so that the strip thickness decreases toward the left and right edges. ing. In addition, the plate thicknesses of both edges may not be the same and may be in a state called a wedge.

従来では、被圧延材の板厚を、板幅中央で制御してい
る。計算重量製品、すなわち製品重量を長さと単位長さ
当りの計算重量との積によつて求める製品、あるいは最
小板厚を保証すればよい製品では、被圧延材のエツジの
板厚を想定し、すなわちクラウン、ウエツジ、およびさ
らには、それらの被圧延材相互間のばらつきなどを考慮
し、エツジ板厚から被圧延材の幅方向中央の板厚を設定
値として算出して求めている。
Conventionally, the plate thickness of the material to be rolled is controlled at the center of the plate width. Calculated weight products, that is, products that are obtained by multiplying the product weight by the product of the length and the calculated weight per unit length, or products that only require a minimum plate thickness, assume the edge plate thickness of the rolled material, That is, in consideration of the crown, the wedge, and further, the variation between the rolled materials, etc., the plate thickness at the center in the width direction of the rolled material is calculated as the set value from the edge plate thickness.

発明が解決すべき課題 このような先行技術では、板厚が予め定める値以上で
あるように品質保証をするには、余裕を見込んで前記中
央設定値を求める必要があり、そのようにすると、板厚
が不必要に大きい製品が得られてしまい無駄である。ま
たこの設定値に余裕がないいわばぎりぎりの設定値を求
めて圧延を行つたときには、板厚が不足する製品が混入
する危険がある。
Problems to be Solved by the Invention In such a prior art, in order to guarantee quality so that the plate thickness is equal to or more than a predetermined value, it is necessary to allow the margin to obtain the central set value. It is wasteful that a product having an unnecessarily large plate thickness is obtained. Further, when rolling is carried out by obtaining a so-called barely set value with no margin in this set value, there is a risk that products with insufficient plate thickness may be mixed.

本発明の目的は、被圧延材の板厚が希望する値となる
ようにし、しかも不必要に板厚が大きくならずに、無駄
を防ぐようにした板厚制御方法を提供することである。
An object of the present invention is to provide a plate thickness control method for preventing a waste by allowing the plate thickness of a material to be rolled to a desired value and preventing the plate thickness from unnecessarily increasing.

課題を解決するための手段 本発明は、圧延機の入側、あるいはその上流設備にて
板厚の薄い方のエツジを決定するとともに、圧延機によ
る圧延後のセンター部およびエツジ部の板厚設定値を算
出して求め、その求めたセンター部板厚設定値で圧延を
行い、被圧延材の先端が圧延機の出側に到達後、圧延機
出側の薄い方のエツジの厚みを検出し、板厚制御対象位
置をセンター部から薄い方のエツジ部に切換え、薄い方
のエツジの検出厚みが予め定めるエツジ部板厚設定値に
なるように板厚制御をすることを特徴とした板厚制御方
法である。
Means for Solving the Problems The present invention determines the edge of the thinner sheet thickness at the entrance side of the rolling mill or at its upstream equipment, and sets the sheet thickness of the center portion and the edge portion after rolling by the rolling mill. Calculate the value and perform rolling with the obtained center plate thickness setting value, and after the tip of the rolled material reaches the exit side of the rolling mill, detect the thickness of the thinner edge on the exit side of the rolling mill. The thickness of the plate is controlled so that the target position of the plate thickness control is switched from the center part to the thinner edge part, and the detected thickness of the thinner edge is set to a preset edge part thickness setting value. It is a control method.

作用 本発明に従えば、連続式タンデム圧延機などのような
圧延機の入側、あるいはその上流設備で、コイルなどの
被圧延材の全幅の厚みを検出し、この全幅の厚みの検出
値に基づいて、幅方向の左右のエツジのうち、圧延後の
板厚の小さい方のエツジを決定することができる。また
この被圧延材の全幅の検出厚みに基づいて、圧延後のセ
ンター部およびエツジ部板厚設定値を算出して求め、そ
の求めたセンター部板厚設定値で、前記圧延機による圧
延を行う。
Action According to the present invention, the inlet side of a rolling mill such as a continuous tandem rolling mill, or upstream equipment thereof, detects the thickness of the entire width of the material to be rolled such as the coil, the detection value of the thickness of this full width On the basis of the left and right edges in the width direction, the edge having the smaller sheet thickness after rolling can be determined. Further, based on the detected thickness of the entire width of the material to be rolled, it is determined by calculating the center part and edge part plate thickness set value after rolling, and the center part plate thickness set value thus obtained is used for rolling by the rolling mill. .

圧延機の出側では、被圧延材の先端が圧延機の出側に
到達した後、前述のようにして決定した薄い方のエツジ
の厚みを検出し、板厚制御対象位置をセンター部から薄
い方のエツジ部に切換え、この薄い方のエツジの厚みの
検出値に基づいてその薄い方のエツジの検出厚みが予め
定める値になるように板厚制御を行う。こうして板厚が
最も薄い前記薄い方のエツジの厚みが予め定めた値以上
とすることができ、品質の向上を図ることができる。し
かも、被圧延材のクラウン、ウエツジおよび被圧延材相
互間のばらつきなどを考慮して厚みをむやみに大きくす
る必要がなく、材料の無駄が省かれ、歩留まりロスを低
減することが可能となる。製造変更直後センター部で制
御を行うのは、製造変更点での板幅変更、板の蛇行等で
エツジ部の追従が困難なためである。
On the exit side of the rolling mill, after the tip of the material to be rolled reaches the exit side of the rolling mill, the thickness of the thinner edge determined as described above is detected, and the target position for strip thickness control is reduced from the center. The edge portion is switched to the other edge portion, and the plate thickness is controlled based on the detected value of the thickness of the thinner edge so that the detected thickness of the thinner edge becomes a predetermined value. In this way, the thickness of the thin edge having the smallest plate thickness can be set to a predetermined value or more, and quality can be improved. Moreover, it is not necessary to unnecessarily increase the thickness in consideration of the crown of the material to be rolled, the wedge, and the variation among the materials to be rolled, so that the waste of the material can be eliminated and the yield loss can be reduced. Immediately after the manufacturing change, the control is performed in the center part because it is difficult to follow the edge part due to the change of the plate width at the manufacturing change point and the meandering of the plate.

実施例 第1図は、本発明の一実施例の全体の系統図である。
複数のコイル状被圧延材はその尾端と先端とが溶接さ
れ、その被圧延材1は連続式タンデム圧延機2によつて
圧延され、製品として供給される。この圧延機2の入側
では、被圧延材の全幅の厚みを検出してその被圧延材の
プロフイールを検出するための厚み計PM1が設けられ
る。圧延機2の出側では、従来法によるセンター部設定
用厚み計X4Dに加え、圧延された被圧延材の幅方向の任
意の位置の厚みを検出する厚み計PM2が設けられる。
Embodiment FIG. 1 is an overall system diagram of an embodiment of the present invention.
A plurality of coiled materials to be rolled are welded at their tail ends and tips, and the material to be rolled 1 is rolled by a continuous tandem rolling mill 2 and supplied as a product. At the entrance side of the rolling mill 2, a thickness gauge PM1 for detecting the thickness of the entire width of the material to be rolled and detecting the profile of the material to be rolled is provided. On the outlet side of the rolling mill 2, in addition to the center portion setting thickness gauge X4D according to the conventional method, a thickness gauge PM2 for detecting the thickness at any position in the width direction of the rolled material to be rolled is provided.

第2図は、圧延機2の入側に設けられた厚み計PM1お
よび出側に設けられた厚み計PM2を簡略化して示す平面
図である。厚み計PM1,PM2はたとばX線またはγ線を用
い、鋼板などの被圧延材1の厚みを検出する。厚み計PM
1,PM2は被圧延材1の幅方向に変位し、これによつて入
側の厚み計PM1はその被圧延材の全幅にわたる厚みを検
出することができ、また出側の厚み計PM2はその被圧延
材1の希望する幅方向の位置におけるエツジの厚みを検
出することができる。厚み計X4Dは、X線またはγ線を
用い、圧延機2の出側で、センター部の厚みを検出す
る。
FIG. 2 is a plan view schematically showing a thickness gauge PM1 provided on the inlet side and a thickness gauge PM2 provided on the outlet side of the rolling mill 2. The thickness meters PM1 and PM2 detect the thickness of the material 1 to be rolled such as a steel plate by using X-rays or γ-rays. Thickness meter PM
1, PM2 is displaced in the width direction of the material 1 to be rolled, whereby the thickness gauge PM1 on the inlet side can detect the thickness over the entire width of the material to be rolled, and the thickness gauge PM2 on the outlet side It is possible to detect the thickness of the edge at the desired position in the width direction of the material to be rolled 1. The thickness meter X4D uses X-rays or γ-rays to detect the thickness of the center portion on the exit side of the rolling mill 2.

第3図(1)は圧延機2の入側に供給される被圧延材
1の軸直角断面図であり、第3図(2)は圧延機2によ
つて圧延された被圧延材の軸直角断面図である。入側の
被圧延材の厚みは前述のように厚み計PM1によつて検出
され、その出力は制御回路3に入力される。また出側の
被圧延材の厚みを検出する厚み計PM2からの出力は制御
回路3に与えられる。制御回路3は圧延機2の圧下手段
4を駆動して、板厚制御を行う。
FIG. 3 (1) is a sectional view perpendicular to the axis of the rolled material 1 supplied to the inlet side of the rolling mill 2, and FIG. 3 (2) is a shaft of the rolled material rolled by the rolling mill 2. FIG. The thickness of the material to be rolled on the entrance side is detected by the thickness gauge PM1 as described above, and its output is input to the control circuit 3. The output from the thickness gauge PM2 for detecting the thickness of the rolled material on the output side is given to the control circuit 3. The control circuit 3 drives the rolling-down means 4 of the rolling mill 2 to control the strip thickness.

第4図を参照して動作を説明する。ステツプn1からス
テツプn2に移り、被圧延材1が厚み計PM1を通過すると
き、その厚み計PM1によつて被圧延材1の全幅の厚みを
測定して幅方向中央の最大厚みHcn、クラウンHcrおよび
ウエツジHWEを測定する。このとき幅方向の左右エツジ1
a,1bのうち、板厚の小さい方のエツジ1bを決定する。
The operation will be described with reference to FIG. When the material to be rolled 1 passes through the thickness meter PM1 from step n1 to step n2, the thickness meter PM1 measures the thickness of the entire width of the material to be rolled 1 to measure the maximum thickness Hcn at the center in the width direction and the crown Hcr. And measure the wedge H WE . At this time, the left and right edges 1 in the width direction
Of the a and 1b, the edge 1b having the smaller plate thickness is determined.

ステツプn3では、圧延機2の出側における被圧延材1
のプロフイールの推定を行う。すなわち最大厚みHcn、
クラウンHcr、ウエツジHWE、および予め定める圧延後の
幅方向中央最大厚みhcn、エツジドロツプhed、板厚公差
下限値hMINに基づき、これによつて第1式で示される冷
延設定厚hcnを求める。第3図(2)のhcrはクラウン、
hweはウエツジを示す。
At step n3, the rolled material 1 on the exit side of the rolling mill 2 is
Estimate the profile of. Ie maximum thickness Hcn,
Based on the crown Hcr, the wedge H WE , and the predetermined maximum widthwise central thickness hcn after rolling, the edge drop hed, and the plate thickness tolerance lower limit value hMIN, the cold rolling set thickness hcn represented by the first equation is obtained. In Fig. 3 (2), hcr is a crown,
hwe indicates a wedge.

図3(2)から(1)が成立する。 3 (2) to (1) are established.

hch=hMIN+hed+hcr+hWE ……(1) 圧延中、被圧延材1のエツジドロツプ領域F1を除く板
幅中央領域においては、圧延前のクラウンHCR、ウエツ
ジHWEは圧延の板厚減少率に比例して減少するので、圧
延前のクラウンHCRとウエツジHWEとの和は、圧延前後の
幅方中央最大厚みの比(hcn/HCN)と同一比率で減少す
る。このため、圧延後のクラウンhcrとウエツジhweとの
和は(2)式で表される。
h ch = hMIN + h ed + h cr + h WE (1) During rolling, in the center area of the strip width of rolled material 1 excluding edge drop zone F1, the crown H CR before rolling and wedge H WE are the reduction of sheet thickness during rolling. Since it decreases in proportion to the ratio, the sum of the crown H CR and the wedge H WE before rolling decreases at the same ratio as the ratio of the width-center maximum thickness before rolling (h cn / H CN ). Therefore, the sum of the rolled crown h cr and the wedge h we is expressed by the equation (2).

(1)式と(2)式から(3)式が導出される。 Equation (3) is derived from equations (1) and (2).

(3)式を展開して(4)式が導出される。 Expression (4) is derived by expanding expression (3).

この値hcnは、圧延後の被圧延材1の幅方向中央の板
厚設定値を表している。エツジドロツプhedは冷延で決
定される。すなわちパススケジユール等によつて別々に
設定する。クラウンはホツトプロフイールと圧下率によ
つて一義的に決まる。こうして上述の板幅中央の板厚設
定値hcnを算出して求める。テーパーロールやクラウン
ロール等によるシートクラウンやエツジドロツプの改善
がなされる場合はその改善代分のみhcnを薄くできる。
これによつて制御回路3は、この設定値hcnが達成され
るように圧下装置4を制御する。
This value hcn represents a plate thickness setting value at the center in the width direction of the rolled material 1 after rolling. The edge depth is determined by cold rolling. That is, it is set separately according to the pass schedule or the like. The crown is uniquely determined by the hot profile and the rolling reduction. Thus, the plate thickness set value hcn at the center of the plate width is calculated and obtained. When the seat crown and edge drop are improved by taper rolls, crown rolls, etc., hcn can be thinned only for the improvement.
Accordingly, the control circuit 3 controls the reduction device 4 so that the set value hcn is achieved.

ステツプn4では、連続圧延を行い、被圧延材の溶接
部、すなわち製造変更点が、圧延機2の最終スタンド通
過後に、センター部からエツジ部へ制御対象位置を切り
換え、出側の厚み計PM2によつて検出される薄い方のエ
ツジの検出厚みが予め定める板厚公差下限値hMINまたは
それ以上になるように板厚制御を行う。
In step n4, continuous rolling is performed, and the welded portion of the material to be rolled, that is, the manufacturing change point, switches the control target position from the center portion to the edge portion after passing the final stand of the rolling mill 2, and the thickness gauge PM2 on the outlet side is changed. Therefore, the plate thickness control is performed so that the detected thickness of the thinner edge thus detected becomes a predetermined plate thickness tolerance lower limit value hMIN or more.

第5図(1)は設備の配置を示し、第5図(2)は被
圧延材の進行順を示し、参照符,,は被圧延材の
番号をそれぞれ示し、第5図(3)は厚み計X4D,PM2の
制御対象位置を示し、第6図は厚み計X4D,PM2によつ
て、溶接部での厚み計X4Dによるセンター制御と、厚み
計PM2による安定部のエツジ制御の切換えを示す。第5
図(2)および第5図(3)における参照符TOPは被圧
延材の先端を示し、参照符ENDは尾端を示し、MIDはその
パス方向すなわち長手方向の中間部分を示している。第
5図(3)において斜線を施して示すように、溶接部付
近、すなわち先端TOPと尾端END付近では、センター部の
厚みを検出する厚み計X4Dによつて、走行中の厚み制御
(略称FGC)を行う。また斜線で示す以外の被圧延材の
部分MIDでは、エツジ部の厚みを検出する厚み計PM2によ
つてエツジ部の厚み制御を行う。この厚み計PM1によつ
て、板厚の小さいサイド、すなわち板厚の小さい方のエ
ツジを決定し、厚み計PM2は、その薄い方のエツジの厚
みを検出する。厚み計PM1による板厚の小さいサイドと
いうのは、そのウエツジまたはエツジドロツプが大きい
サイドであり、これは、上述のように板厚の小さい方の
エツジである。溶接部、すなわち製造変更点で、センタ
ー部の厚み計X4Dを用いることによつて、エツジ部の厚
み計PM2の移動動作に遅れが生じても、板厚の制御を連
続して行うことができる。
FIG. 5 (1) shows the arrangement of equipment, FIG. 5 (2) shows the order of progress of the material to be rolled, reference numerals, and indicate the numbers of the material to be rolled, and FIG. 5 (3) shows The control target positions of the thickness gauges X4D and PM2 are shown. Fig. 6 shows the switching between the center control by the thickness gauge X4D and the edge control of the stable portion by the thickness gauge PM2 by the thickness gauges X4D and PM2. . Fifth
In FIG. 2 and FIG. 5C, the reference numeral TOP indicates the tip of the rolled material, the reference numeral END indicates the tail end, and MID indicates the intermediate portion in the pass direction, that is, the longitudinal direction. As shown by hatching in Fig. 5 (3), in the vicinity of the welded portion, that is, near the tip TOP and the tail end END, a thickness gauge X4D that detects the thickness of the center portion is used to control the thickness during running (abbreviated name). FGC). In the portion MID of the rolled material other than the shaded area, the thickness of the edge portion is controlled by the thickness gauge PM2 that detects the thickness of the edge portion. The thickness gauge PM1 determines the edge having the smaller thickness, that is, the edge having the smaller thickness, and the thickness gauge PM2 detects the thickness of the thinner edge. The side with a small plate thickness by the thickness meter PM1 is the side with a large wedge or edge drop, which is the edge with the smaller plate thickness as described above. By using the thickness gauge X4D at the welded portion, that is, at the manufacturing change point, even if the movement operation of the thickness gauge PM2 at the edge portion is delayed, it is possible to continuously control the plate thickness. .

圧延機2の初段スタンドに設けられているセンター部
の厚みを検出する厚み計X1E,X1Dの検出出力は、前述の
センター部板厚設定値で圧延を行うときおよびエツジ部
板厚設定値で圧延を行うときにおいて、それぞれ用いら
れてもよい。
The detection output of the thickness gauges X1E and X1D that detect the thickness of the center part provided on the first-stage stand of the rolling mill 2 is used when rolling at the above-mentioned center part thickness setting value and at the edge part thickness setting value. May be used when performing each.

発明の効果 以上のように本発明によれば、圧延中に板厚制御対象
位置を適正に切換えることによつて被圧延材の板厚の板
幅内最小値を保証し、品質の向上を図ることができると
ともに、材料の無駄を省き、歩留まりロスの向上を図る
ことが可能になる。
EFFECTS OF THE INVENTION As described above, according to the present invention, by appropriately switching the plate thickness control target position during rolling, the minimum value of the plate thickness of the rolled material within the plate width is guaranteed, and the quality is improved. In addition, it is possible to reduce waste of materials and improve yield loss.

【図面の簡単な説明】[Brief description of drawings]

第1図は本発明の一実施例の全体の系統図、第2図は入
側および出側に設けられた厚み計PM1,PM2を簡略化して
示す平面図、第3図は被圧延材1の軸直角断面図、第4
図は動作を説明するためのフローチヤート、第5図は厚
み計PM1,X4D,PM2を用いる板厚制御を説明するための
図、第6図は被圧延材の厚みの検出を説明するための図
である。 1……被圧延材、2……圧延機、3……制御回路、4…
…圧下装置、PM1……入側の厚み計、X4D,PM2……出側の
厚み計
FIG. 1 is an overall system diagram of one embodiment of the present invention, FIG. 2 is a plan view schematically showing thickness gauges PM1 and PM2 provided on the inlet side and the outlet side, and FIG. 3 is a rolled material 1 Cross-section view of the axis, 4th
Fig. Is a flow chart for explaining the operation, Fig. 5 is a diagram for explaining the plate thickness control using the thickness gauges PM1, X4D, PM2, and Fig. 6 is a diagram for detecting the thickness of the rolled material. It is a figure. 1 ... Rolled material, 2 ... Rolling mill, 3 ... Control circuit, 4 ...
… Reduction device, PM1 …… Thickness gauge on the input side, X4D, PM2… Thickness gauge on the output side

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】圧延機の入側、あるいはその上流設備にて
板厚の薄い方のエツジを決定するとともに、圧延機によ
る圧延後のセンター部およびエツジ部の板厚設定値を算
出して求め、その求めたセンター部板厚設定値で圧延を
行い、被圧延材の先端が圧延機の出側に到達後、圧延機
出側の薄い方のエツジの厚みを検出し、板厚制御対象位
置をセンター部から薄い方のエツジ部に切換え、薄い方
のエツジの検出厚みが予め定めるエツジ部板厚設定値に
なる板厚制御をすることを特徴とした板厚制御方法。
1. An edge having a smaller sheet thickness is determined on the entrance side of the rolling mill or upstream equipment thereof, and the sheet thickness set values of the center portion and the edge portion after rolling by the rolling mill are calculated and obtained. Rolling is performed at the obtained center part plate thickness setting value, and after the tip of the material to be rolled reaches the exit side of the rolling mill, the thickness of the thinner edge on the exit side of the rolling mill is detected, and the strip thickness control target position is detected. Is switched from the center portion to the thinner edge portion, and the sheet thickness control method is characterized in that the detected thickness of the thinner edge is controlled to a preset edge portion thickness setting value.
JP1082413A 1989-03-31 1989-03-31 Plate thickness control method Expired - Lifetime JPH0813371B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1082413A JPH0813371B2 (en) 1989-03-31 1989-03-31 Plate thickness control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1082413A JPH0813371B2 (en) 1989-03-31 1989-03-31 Plate thickness control method

Publications (2)

Publication Number Publication Date
JPH02258107A JPH02258107A (en) 1990-10-18
JPH0813371B2 true JPH0813371B2 (en) 1996-02-14

Family

ID=13773903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1082413A Expired - Lifetime JPH0813371B2 (en) 1989-03-31 1989-03-31 Plate thickness control method

Country Status (1)

Country Link
JP (1) JPH0813371B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6387765B2 (en) * 2014-09-26 2018-09-12 日本電気株式会社 Pressurizing device and pressurizing method, arithmetic control device, pressurizing method, and computer program
CN112122355B (en) * 2020-09-10 2021-07-13 燕山大学 Edge thinning hysteresis control method and system

Also Published As

Publication number Publication date
JPH02258107A (en) 1990-10-18

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