JPS6254510A - Method for controlling rolling shape - Google Patents

Method for controlling rolling shape

Info

Publication number
JPS6254510A
JPS6254510A JP19234885A JP19234885A JPS6254510A JP S6254510 A JPS6254510 A JP S6254510A JP 19234885 A JP19234885 A JP 19234885A JP 19234885 A JP19234885 A JP 19234885A JP S6254510 A JPS6254510 A JP S6254510A
Authority
JP
Japan
Prior art keywords
rolling
thickness change
wall thickness
rolled
rolled material
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.)
Pending
Application number
JP19234885A
Other languages
Japanese (ja)
Inventor
Ichiro Degawa
出川 一郎
Akira Amemura
飴村 彰
Hiroyuki Asano
浅野 博之
Kunihiko Wakatsuki
邦彦 若月
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 Corp
Original Assignee
Nippon 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP19234885A priority Critical patent/JPS6254510A/en
Publication of JPS6254510A publication Critical patent/JPS6254510A/en
Pending 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B2261/00Product parameters
    • B21B2261/02Transverse dimensions
    • B21B2261/04Thickness, gauge

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

PURPOSE:To improve a product shape and efficiency and to simplify a rolling method by rolling a wall thickness change rolling material in such a manner that the wall thickness change rate is always larger on the rolling top side than on the rolling bottom side in the stage of subjecting said rolling material to cross rolling. CONSTITUTION:The different thickness rolling material 1 is obtd. by wall thickness change rolling in such a manner that a difference is given between the roll gaps DS and WS of a drive side and work side. The different width rolling material 2 having a prescribed flat shape is then obtd. by at least one pass in the transfer direction intersecting orthogonally with the direction of the wall thickness change rolling. The wall thickness change rate at the top in the stage of rotating 90 and rolling after the wall thickness change rolling is made larger than the wall thickness change rate at the bottom, by which the projection rates DELTABD and DELTABW after rolling are made equal. The product having the uniform cross rolling quantity is thus obtd.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、単一の圧延材の部位において製品幅の異なる
異幅圧延材の圧延方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of rolling a rolled material having different widths, in which the product widths differ in the parts of a single rolled material.

〔従来の技術〕[Conventional technology]

異幅鋼板を圧延によって製造する方法は、第3図に示す
方式によるものが、例えば特開昭55−73406号公
報、特開昭56−71506号公報に開示されてい同第
3図を参照して、異幅圧延材の圧延は、まず第3図(a
)に示すように、ドライブサイドとワークサイドとのロ
ールギャプO3及びWSを同等にして同図(b)に示す
差厚圧延板aを、例えば長さ方向(X−X)に肉厚変更
圧延によって得た後、90度回転して圧延し、同図(c
)に示すΔBOと68wの突出部を有する異幅圧延板C
を得るものである。
A method of manufacturing steel plates of different widths by rolling is disclosed in, for example, Japanese Patent Application Laid-open No. 55-73406 and Japanese Patent Application Laid-Open No. 56-71506, as shown in Fig. 3. First, the rolling of the rolled material with different widths is performed as shown in Fig. 3 (a
), the roll gap O3 and WS between the drive side and the work side are made equal, and the differential thickness rolled plate a shown in FIG. After that, it was rotated 90 degrees and rolled, resulting in the same figure (c
) A rolled plate C with different widths having a protrusion of ΔBO and 68w
This is what you get.

このように、両サイドが同等の差厚を存する圧延板aを
90度回転後の初期圧延においては、圧延方向の前端か
ら後端に、即ち圧延トップ側から圧延ボトム側への材料
の移動を生じて、突出量ΔBDとΔBWが不均一となり
、その後の圧延を難しくしている。このための対策とし
て、前記特開昭56−71506号公報に記載され・で
いるように、初期圧延における圧下率を2%程度に小さ
くして前記不均一を解消する方策が採られている。
In this way, in the initial rolling after rotating the rolled plate a by 90 degrees, where both sides have the same thickness difference, the material is moved from the front end to the rear end in the rolling direction, that is, from the rolling top side to the rolling bottom side. As a result, the protrusion amounts ΔBD and ΔBW become non-uniform, making subsequent rolling difficult. As a countermeasure for this, as described in the above-mentioned Japanese Patent Application Laid-Open No. 71506/1983, a measure has been taken to reduce the rolling reduction ratio in the initial rolling to about 2% to eliminate the non-uniformity.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしながら、この圧下率を小さくすることによって突
出量の不均一は成る程度解消できるにしても、通常の圧
下率による圧延に比べはるかに低能率で圧延を行なうこ
とになり、このため圧延設備の稼働率が著しく低下する
という欠点がある。
However, even if the unevenness of the protrusion amount can be alleviated to some extent by reducing the rolling reduction ratio, rolling is performed at a much lower efficiency than rolling with a normal rolling reduction ratio, and this results in lower operating efficiency of the rolling equipment. The disadvantage is that the rate is significantly reduced.

本発明は、この従来の異幅圧延材の圧延における欠点を
解消するもので、高能率でしかも両端部の幅出し量が均
等で、しかも平坦度に優れた高品質の異幅圧延材の圧延
方法を提供することを目的とするものである。
The present invention solves the drawbacks in the conventional rolling of rolled materials of different widths, and is capable of rolling high-quality rolled materials of different widths with high efficiency, equal width at both ends, and excellent flatness. The purpose is to provide a method.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は、上記問題点を解決するもので、圧延材を、あ
る移送方向で肉厚変更圧延した後、その方向と直交する
移送方向で圧延することによって圧延材を幅寸法の異な
る平面形状とする圧延方法において、前記直交する移送
方向での圧延トップの肉厚変更量をΔSTとし圧延ボト
ムの肉厚変更量を△SRとしたとき、ΔST>ΔSBの
条件を維持しつつ圧延することを手段とする。
The present invention solves the above-mentioned problems, and after rolling a rolled material in a certain transfer direction to change the wall thickness, rolling the material in a transfer direction perpendicular to that direction, the rolled material can be changed into a planar shape with a different width dimension. In the rolling method, when the amount of thickness change of the rolling top in the orthogonal transfer direction is ΔST and the amount of thickness change of the rolling bottom is ΔSR, rolling is performed while maintaining the condition of ΔST>ΔSB. shall be.

〔作用〕[Effect]

図面を参照して、本発明の詳細な説明する。 The present invention will be described in detail with reference to the drawings.

第1図は本発明方法の各工程を示す図であり、第2図は
本発明方法を実施するための制御機構を示す図である。
FIG. 1 is a diagram showing each step of the method of the present invention, and FIG. 2 is a diagram showing a control mechanism for carrying out the method of the present invention.

第1図を参照して、同図(a)に示すようにドライブサ
イドとワークサイドとのロールギヤノブDSと−5との
間に差を付けるように、例えば圧延材を長さ方向(X−
X)で肉厚変更圧延して同図(b)に示すような差厚圧
延材1を得る。そして、肉厚変更圧延の方向と直交する
移送方向で少なくとも1回のパスにより同図(c)に示
す所定平面形状を有する異幅圧延材2とする。このとき
の圧延トップは、前記長さ方向圧延の何れかのサイド(
SD、SW)に限定されることはない。
Referring to FIG. 1, for example, the rolled material is rolled in the longitudinal direction (X-
The material is rolled to change the wall thickness in step X) to obtain a differential thickness rolled material 1 as shown in FIG. 2(b). Then, by at least one pass in the transfer direction perpendicular to the direction of thickness-changing rolling, a rolled material 2 of different widths having a predetermined planar shape shown in FIG. 3(c) is obtained. At this time, the rolling top is located on either side (
SD, SW).

本発明の特徴は、前記肉厚変更圧延後90度回転し圧延
を行う際のトップにおける肉厚変更量ΔST(たとえば
ワークサイドの肉厚変更量ΔS−とボトムにおける肉厚
変更量ΔSB  (たとえばドライブサイドの肉厚変更
量ΔSD)との関係を、両サイドの平均板厚が実質上同
一となる条件の下でΔST〉ΔSDとするもので、これ
によって、圧延後の突出量ΔBDとΔB−を等しくする
ものである。
The feature of the present invention is that the thickness change amount ΔST at the top (for example, the work side thickness change amount ΔS−) and the wall thickness change amount ΔSB at the bottom (for example, the work side thickness change amount ΔSB (for example, the The relationship between the side thickness change amount ΔSD) is set as ΔST>ΔSD under the condition that the average plate thickness on both sides is substantially the same, and thereby the protrusion amount ΔBD and ΔB- after rolling are It is to make them equal.

なお、圧延材がキャンバ−や台形状となるのを防止する
ため、圧延材の肉厚変更圧延におけるワークサイドの板
厚HWとドライブサイドの板厚HDとの差を零とするよ
うにそれぞれのロールギャップを設定する必要がある。
In addition, in order to prevent the rolled material from becoming cambered or trapezoidal, the difference between the thickness HW on the work side and the thickness HD on the drive side in the thickness change rolling of the rolled material is set to zero. It is necessary to set a roll gap.

つまり、ワークサイドS−とドライブサイドSDとの平
均板厚H−とHllを実質上等しくするように設定する
In other words, the average plate thicknesses H- and Hll of the work side S- and the drive side SD are set to be substantially equal.

第2図は、その制御系を示す。FIG. 2 shows the control system.

同図において、31,32がワークロール、41.42
がバンクアップロールである。ロードセル5W、5Dに
よる検出荷重で圧延材の噛み込みの間、アンドゲートA
NDを通してワークロール3五の回転に同期してパルス
発生器PLGのパルスがマイクロコンピュータCPUに
印加される。マイクロコンピュータCPUには、上記パ
ルスのカウントに対して、ワークサイドWSとドライブ
サイドDSのロールギャップSW、SDを示すデータが
予め与えられている。即ち、圧延方向前後端の突出部の
等しい平面形状を得るためのロールギャップ指示が予め
格納されている。CPuはPLGのパルスが到来すると
、そのパルスのカウントを開始し、制?11系の遅れ分
のパルス数をカウント値に加えてロールギャップ指示値
sw、soを読んで、内蔵するD/Aコンバータに出力
する。D/Aコンバータの出力(SW、SD)は、演算
増幅器op、及びop2に印加される。油圧シリンダ6
W、6Dのギャップ指示値が夫々増幅器OPl及びO2
0にフィードバックされ、OPl及びO20がギャップ
設定値と現ギャップ値の差を示すエラー信号を生じ、そ
れぞれサーボバルブ7−及び7Dの付勢増幅器に印加す
る。この修正動作により、ワークサイドおよびドライブ
サイドのロールギャップが時系列で更新される設定指示
値(CPUの出力)に設定される。
In the same figure, 31 and 32 are work rolls, 41.42
is a banked up roll. During the biting of the rolled material due to the load detected by the load cells 5W and 5D, the AND gate A
Pulses from a pulse generator PLG are applied to the microcomputer CPU through the ND in synchronization with the rotation of the work roll 35. The microcomputer CPU is given in advance data indicating the roll gaps SW and SD of the work side WS and the drive side DS in response to the above pulse count. That is, roll gap instructions for obtaining the same planar shape of the protrusions at the front and rear ends in the rolling direction are stored in advance. When the PLG pulse arrives, the CPU starts counting the pulse and controls the pulse. The number of pulses corresponding to the delay of system 11 is added to the count value, and the roll gap instruction values sw and so are read and output to the built-in D/A converter. The outputs (SW, SD) of the D/A converter are applied to operational amplifiers op and op2. hydraulic cylinder 6
The gap indication values of W and 6D are the amplifiers OPl and O2, respectively.
0, OPl and O20 produce error signals indicating the difference between the gap set value and the current gap value, which are applied to the energizing amplifiers of servo valves 7- and 7D, respectively. Through this corrective operation, the work side and drive side roll gaps are set to set command values (output of the CPU) that are updated in chronological order.

同制御系において、たとえば圧延材をその長さ方向に駆
動して圧延する場合では、圧延材の移動に合わせてワー
クサイドWSのロールギャップSWとドライブサイドD
SのロールギャップSDを、その時の圧延トップとサイ
ドとの関係をもとに、CPUから、ΔST >ΔSBの
関係を維持できるように動かす。これにより、圧延材l
のワークサイドの(反厚HW とドライブサイドの板厚
HDは、第1図(b)に示すように長さ方向(X −X
)に変化する。
In the same control system, for example, when rolling a rolled material by driving it in its length direction, the roll gap SW of the work side WS and the drive side D are changed according to the movement of the rolled material.
Based on the relationship between the rolling top and the side at that time, the roll gap SD of S is moved by the CPU so that the relationship ΔST > ΔSB can be maintained. As a result, the rolled material l
The work side thickness (reverse thickness HW) and the drive side plate thickness HD are as shown in Fig. 1(b).
).

次に、前の圧延でのワークサイドS−を圧延先端側即ち
トップとして圧延すると、長手方向前後端の突出部の等
しい第1図(c)に示す異幅圧延材2が得られる。これ
は、第1図(b)に示す差厚圧延材1の圧延において、
ボトムとなる側の圧下の動きをトップ側より少なく動か
すので、ボトム側へのしね寄せ分が少なく、ボトム側も
トップ側も突出部が等しくなるからである。
Next, by rolling with the work side S- in the previous rolling as the rolling tip side, that is, the top, a rolled material 2 of different widths as shown in FIG. 1(c) with equal protrusions at the front and rear ends in the longitudinal direction is obtained. This is because in rolling the differential thickness rolled material 1 shown in FIG. 1(b),
This is because the lowering movement of the bottom side is less than that of the top side, so the amount of pushing toward the bottom side is small, and the protruding portions are equal on both the bottom side and the top side.

〔実施例〕〔Example〕

次に、本発明の実施例を比較例と共に次表に示す。 Next, examples of the present invention are shown in the following table along with comparative examples.

比較例に比べ、本発明の各実施例では突出量ΔBDとΔ
BHの差が格段に減少し、幅出し量が均等な異幅圧延材
を得ることができた。
Compared to the comparative example, in each example of the present invention, the protrusion amount ΔBD and Δ
The difference in BH was significantly reduced, and it was possible to obtain a rolled material of different widths with a uniform tentering amount.

〔発明の効果〕〔Effect of the invention〕

本発明によって、仕上圧延における前後端の幅変動量が
等しくなり、幅広側の板道中心と幅狭側の板道中心が一
致し、板道のずれによって生ずるキャンバ−やウニ’7
ジの発生が抑制でき、圧延を容易にし、しかも圧延能率
を落すことなく上記結果を得ることが可能である。
According to the present invention, the amount of width variation at the front and rear ends during finish rolling is equalized, the center of the board road on the wide side and the center of the board road on the narrow side coincide, and camber and sea urchins caused by misalignment of the board road are prevented.
It is possible to suppress the occurrence of scratches, facilitate rolling, and obtain the above results without reducing rolling efficiency.

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

第1図は本発明の基本的な態様を示す図であり、同図(
a)はドライブサイドおよびワークサイドのロールギャ
ップを示し、同図(b)は肉圧変更圧延後の差圧圧延材
を示し、同図(c)は所定平面形状に圧延されたものを
示す。また、第2図は、本発明実施例で使用する制御系
を示す。そして、第3図は従来法を示す図である。 l:差圧圧延材    2:異幅圧延材3、.32 :
ワークロール 4t 、  42  :バンクアンプロール5W+5D
:ロードセル   6讐、6D:油圧シリンダ讐S: 
ワークサイド    DSニドライブサイドΔSw、Δ
SD :肉厚変更量
FIG. 1 is a diagram showing a basic aspect of the present invention.
Figure a) shows the roll gaps on the drive side and work side, Figure (b) shows the differentially rolled material after thickness change rolling, and Figure (c) shows the material rolled into a predetermined planar shape. Moreover, FIG. 2 shows a control system used in the embodiment of the present invention. FIG. 3 is a diagram showing the conventional method. l: Differentially rolled material 2: Different width rolled material 3, . 32:
Work roll 4t, 42: Bank unroll 5W+5D
: Load cell 6, 6D: Hydraulic cylinder S:
Work side DS drive side ΔSw, Δ
SD: Thickness change amount

Claims (1)

【特許請求の範囲】 1、圧延材を、ある移送方向で肉厚変更圧延した後、そ
の方向と直交する移送方向で圧延することによって圧延
材を幅寸法の異なる平面形状とする圧延方法において、
前記直交する移送方向での圧延トップの肉厚変更量をΔ
STとし圧延ボトムの肉厚変更量をΔSBとしたとき、 ΔST>ΔSB の条件を維持しつつ圧延することを特徴とする圧延形状
制御方法。
[Claims] 1. A rolling method in which a rolled material is rolled to change its thickness in a certain transfer direction and then rolled in a transfer direction perpendicular to that direction to give the rolled material a planar shape with different width dimensions,
The amount of thickness change of the rolling top in the orthogonal transport direction is Δ
A rolling shape control method characterized by rolling while maintaining the condition of ΔST>ΔSB, where ST is the thickness change amount of the rolling bottom and ΔSB.
JP19234885A 1985-08-31 1985-08-31 Method for controlling rolling shape Pending JPS6254510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19234885A JPS6254510A (en) 1985-08-31 1985-08-31 Method for controlling rolling shape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19234885A JPS6254510A (en) 1985-08-31 1985-08-31 Method for controlling rolling shape

Publications (1)

Publication Number Publication Date
JPS6254510A true JPS6254510A (en) 1987-03-10

Family

ID=16289777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19234885A Pending JPS6254510A (en) 1985-08-31 1985-08-31 Method for controlling rolling shape

Country Status (1)

Country Link
JP (1) JPS6254510A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5139741A (en) * 1988-12-29 1992-08-18 Terumo Kabushiki Kaisha Blood processing apparatus of hollow fiber type
US5605630A (en) * 1993-03-24 1997-02-25 Scitec Kabushiki Kaisha Blood flow direction changeover device and method for hemodialyzer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57109508A (en) * 1980-12-26 1982-07-08 Nippon Steel Corp Rolling shape controlling method
JPS587362A (en) * 1981-07-06 1983-01-17 Seiko Epson Corp Ink jet printer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57109508A (en) * 1980-12-26 1982-07-08 Nippon Steel Corp Rolling shape controlling method
JPS587362A (en) * 1981-07-06 1983-01-17 Seiko Epson Corp Ink jet printer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5139741A (en) * 1988-12-29 1992-08-18 Terumo Kabushiki Kaisha Blood processing apparatus of hollow fiber type
US5605630A (en) * 1993-03-24 1997-02-25 Scitec Kabushiki Kaisha Blood flow direction changeover device and method for hemodialyzer

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