JP2539052B2 - Method and apparatus for estimating dog bone height of rolled material - Google Patents
Method and apparatus for estimating dog bone height of rolled materialInfo
- Publication number
- JP2539052B2 JP2539052B2 JP1215585A JP21558589A JP2539052B2 JP 2539052 B2 JP2539052 B2 JP 2539052B2 JP 1215585 A JP1215585 A JP 1215585A JP 21558589 A JP21558589 A JP 21558589A JP 2539052 B2 JP2539052 B2 JP 2539052B2
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- rolled
- rolled material
- plate
- roll
- 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
Links
- 239000000463 material Substances 0.000 title claims description 69
- 210000000988 bone and bone Anatomy 0.000 title claims description 35
- 238000000034 method Methods 0.000 title claims description 7
- 238000005096 rolling process Methods 0.000 claims description 93
- 238000005259 measurement Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B1/04—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing in a continuous process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2263/00—Shape of product
- B21B2263/10—Lateral spread defects
- B21B2263/12—Dog bone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/12—Rolling load or rolling pressure; roll force
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明は、圧延材を縦ロールにより板幅方向に圧下し
た後、水平ロールにより板厚方向に圧下して圧延材の圧
延を行う圧延装置に利用して好適な圧延材のドッグボー
ン高さ推定方法および推定装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a method of rolling a rolled material by rolling the material in the sheet width direction with a vertical roll and then with a horizontal roll in the sheet thickness direction. The present invention relates to a method and apparatus for estimating a dogbone height of a rolled material that is suitable for use in a rolling apparatus that performs rolling.
（従来の技術） 一般に、スラブまたはビレッドなどの圧延材に対する
圧延装置は、縦ロールを具備したバーチカルスタンドの
エッジャーミルと、水平ロールを具備したホリゾンタル
スタンドの水平ミルとから構成されている。このものに
おいては、先ずエッジャーミルにおいて圧延材を縦ロー
ルにより板幅方向に圧下し、続いて水平ミルにおいて板
幅方向圧下直後の圧延材を水平ロールにより板厚方向に
圧下することによって、圧延材の圧延を行うものとなっ
ている。(Prior Art) Generally, a rolling apparatus for rolled materials such as slabs or billets is composed of an edger mill of a vertical stand equipped with vertical rolls and a horizontal mill of a horizontal stand equipped with horizontal rolls. In this one, first, the rolled material is rolled down in the plate width direction by the vertical rolls in the edger mill, and then the rolled material immediately after rolling in the plate width direction is rolled down in the horizontal mill in the plate thickness direction by the horizontal rolls. It is supposed to be rolled.
ところで、エッジャーミルにおいては第２図に示すよ
うに圧延材１を縦ロールにより板幅方向つまりは図中太
矢印方向に圧下するため、圧下後の圧延材１の両縁部2
a,2bは板厚方向に拡がる。第２図中Ａ−Ａ断面の概念図
を第３図に示す。このように両縁部2a,2bが板厚方向に
拡がった部材をドッグボーン材と称し、該圧延装置では
このドッグボーン材が水平ミルに送られて水平ロールに
より板厚方向に圧下されるものとなっている。By the way, in the edger mill, as shown in FIG. 2, the rolled material 1 is rolled down by a vertical roll in the plate width direction, that is, in the direction of the thick arrow in the figure.
a and 2b spread in the plate thickness direction. A conceptual view of the AA cross section in FIG. 2 is shown in FIG. A member in which both edges 2a, 2b are spread in the plate thickness direction in this way is called a dog bone material, and in the rolling device, this dog bone material is sent to a horizontal mill and pressed down in the plate thickness direction by a horizontal roll. Has become.
一方、該圧延装置の製品に設定された所定の幅寸法を
精度よく得るためには、水平ロールによる圧延材の板厚
方向圧下の際の幅拡がり量を適確に把握しなければなら
ない。この水平ロールの圧延による幅拡がり量は、水平
ミルへ導入される圧延材が平板かドッグボーン材かで異
なってくる。そして、圧延中に圧延材の板厚を測定する
板厚計や板幅を測定する板幅計といった各種計器は広く
実用化されており、平板の場合には水平ロールにおける
圧延材の圧延前後の板厚，板幅を圧延中に測定すること
によって圧延材の寸法変化を適確に推定できる。ところ
が、ドッグボーン材の場合には両縁部のドッグボーン高
さHDが幅拡がり量に影響するが、このドッグボーン高さ
HDを圧延中に測定することが困難であるため、水平ロー
ルにおける圧延前後の圧延材の寸法変化を適確に推定す
ることができなかった。On the other hand, in order to accurately obtain the predetermined width dimension set for the product of the rolling mill, it is necessary to accurately grasp the width expansion amount when the rolled material is rolled by the horizontal roll in the plate thickness direction. The amount of width expansion of the horizontal roll due to rolling differs depending on whether the rolled material introduced into the horizontal mill is a flat plate or a dog bone material. And, various instruments such as a plate thickness meter for measuring the plate thickness of the rolled material during rolling and a plate width meter for measuring the plate width have been widely put to practical use, and in the case of a flat plate, before and after rolling of the rolled material on a horizontal roll. By measuring the strip thickness and strip width during rolling, it is possible to accurately estimate the dimensional changes of the rolled material. However, although the dog bone height H D of the opposite edges in the case of the dog bone material affects the width spread value, the dog bone height
Since it is difficult to measure H D during rolling, it was not possible to accurately estimate the dimensional change of the rolled material before and after rolling on a horizontal roll.
（発明が解決しようとする課題） このように従来技術では、縦ロールで圧延材を板幅方
向に圧下したことにより該圧延材に生じたドッグボーン
高さを圧延中に測定することが困難であったため、製品
の品質を精度よく管理することができなかった。(Problems to be solved by the invention) As described above, in the conventional technology, it is difficult to measure the dog bone height generated in the rolled material by rolling the rolled material in the plate width direction with the vertical roll during rolling. Therefore, the quality of the product could not be controlled accurately.
そこで本発明は、縦ロールで圧延材を板幅方向に圧下
した際に該圧延材に生じたドッグボーン高さを圧延中に
精度よく推定でき、製品の品質向上をはかり得る圧延材
のドッグボーン高さ推定方法および推定装置を提供しよ
うとするものである。Therefore, the present invention can accurately estimate the dogbone height generated in the rolled material when the rolled material is rolled down in the plate width direction by the vertical rolls during rolling, and improve the quality of the product dogbone of the rolled material. A height estimation method and an estimation device are provided.
［発明の構成］ （課題を解決するための手段） 本発明は、圧延材を縦ロールにより板幅方向に圧延し
た後、水平ロールにより板厚方向に圧延する圧延装置に
おいて、縦ロールによる板幅方向の圧延により圧延材に
生じたドッグボーン高さを、板幅方向圧延後の圧延材を
水平ロールにより板厚方向に圧延したときの圧延荷重実
測値と、この実測値測定条件と同一条件の下で平板を水
平ロールで板厚方向に圧延したと仮定して算出した圧延
荷重計算値とから推定するようにした圧延材のドッグボ
ーン高さ推定方法および推定装置である。[Means for Solving the Problems] (Means for Solving the Problems) The present invention relates to a rolling apparatus that rolls a rolled material in the sheet width direction by a vertical roll and then rolls it in the sheet thickness direction by a horizontal roll. The dogbone height generated in the rolled material by rolling in the direction of the rolling direction, the rolling load measured value when the rolled material after rolling in the sheet width direction was rolled in the sheet thickness direction by the horizontal roll, and the same measurement condition as this measured value measurement condition. A dog bone height estimation method and an estimation device for a rolled material, which are estimated from a rolling load calculation value calculated on the assumption that a flat plate is rolled by a horizontal roll in the plate thickness direction below.
（作用） 縦ロールによる板幅方向の圧延により圧延材の両縁部
が板厚方向に拡がったドッグボーン材を水平ロールで板
厚方向に圧下する際の圧延荷重は、その両縁部のみを圧
下することにより生じる圧延荷重と、その両縁部を除い
た平板部を圧下することにより生じる圧延荷重との和と
なる。一方、ドッグボーン材の両縁部のみを圧下するこ
とにより生じる圧延荷重は、そのドッグボーン高さの関
数で表わすことができる。したがって、縦ロールによる
板幅方向圧延後の圧延材を水平ロールにより板厚方向に
圧延したときの圧延荷重実測値から、この実測値測定条
件と同一条件の下で平板を水平ロールで板厚方向に圧延
したと仮定して算出した圧延荷重計算値を減じることに
よって、水平ロールでドッグボーン材の両縁部のみを圧
下することにより生じる圧延荷重が求められ、この圧延
荷重から逆算することによってドッグボーン高さを推定
することが可能である。(Function) Rolling load is applied only when rolling down the dogbone material, in which both edges of the rolled material are spread in the sheet thickness direction by rolling in the sheet width direction by the vertical rolls, with horizontal rolls. It is the sum of the rolling load generated by rolling down and the rolling load generated by rolling down the flat plate portion excluding both edges thereof. On the other hand, the rolling load generated by rolling down only the both edges of the dog bone material can be expressed by a function of the dog bone height. Therefore, from the actual measurement value of the rolling load when the rolled material after rolling in the plate width direction by the vertical rolls is rolled in the plate thickness direction by the horizontal roll, the flat plate is rolled by the horizontal roll in the plate thickness direction under the same conditions as the measured value measurement conditions. The rolling load generated by rolling down only the edges of the dogbone material with horizontal rolls is obtained by subtracting the rolling load calculation value calculated assuming that the rolling was performed on the It is possible to estimate the bone height.
（実施例） 以下、本発明の一実施例を第１図の構成図を参照しな
がら説明する。(Embodiment) An embodiment of the present invention will be described below with reference to the configuration diagram of FIG.
第１図において10はスラブ，ビレットなどの圧延材１
に対する圧延装置であって、縦ロール11を具備したバー
チカルスタンドのエッジャーミルと、水平ロール12を具
備したホリゾンタルスタンドの水平ミルとで構成されて
いる。すなわち、圧延材１はエッジャーミルにおいて縦
ロール11により板幅方向に圧下され、その両縁部が板厚
方向に拡がってドックボーン部を形成する。このドッグ
ボーン部を有する圧延材つまりドッグボーン材は、水平
ミルにおいて水平ロール12により板厚方向に圧下されて
排出され、圧延が完了するものとなっている。In FIG. 1, 10 is a rolled material 1 such as a slab or billet.
And a horizontal stand edger mill equipped with vertical rolls 11 and a horizontal stand horizontal mill equipped with horizontal rolls 12. That is, the rolled material 1 is pressed down in the plate width direction by the vertical rolls 11 in the edger mill, and both edges thereof are expanded in the plate thickness direction to form a dock bone part. The rolled material having the dog bone portion, that is, the dog bone material, is rolled down in the plate thickness direction by the horizontal rolls 12 in the horizontal mill and discharged to complete the rolling.
そして、縦ロール11の圧延材導入側には、圧延材１の
温度Ｔを測定する板温度計13、圧延材１の板幅Ｂを測定
する板幅計14、および圧延材の板厚Ｈを測定する板厚計
15がそれぞれ設けられている。また、水平ロール12の圧
延材排出側にも同じく圧延材１の温度ｔを測定する板温
度計16、圧延材１の板幅ｂを測定する板幅計17、および
圧延材の板厚ｈを測定する板厚計18がそれぞれ設けられ
ている。一方、水平ロール12には、圧延速度Ｖを測定す
る速度計19および圧延荷重Ｐを測定する荷重計20が設け
られている。On the rolled material introduction side of the vertical roll 11, a plate thermometer 13 that measures the temperature T of the rolled material 1, a plate width meter 14 that measures the plate width B of the rolled material 1, and a plate thickness H of the rolled material. Thickness gauge to measure
15 are provided respectively. Also, on the rolled material discharge side of the horizontal roll 12, a plate thermometer 16 that measures the temperature t of the rolled material 1, a plate width meter 17 that measures the plate width b of the rolled material 1, and a plate thickness h of the rolled material are also provided. Plate thickness gauges 18 for measurement are provided respectively. On the other hand, the horizontal roll 12 is provided with a speed meter 19 for measuring the rolling speed V and a load meter 20 for measuring the rolling load P.
一方、記憶部21は、上記水平ロール12のロール径Ｒを
記憶するものである。On the other hand, the storage unit 21 stores the roll diameter R of the horizontal roll 12.
第１の演算器22は、板温度計16による温度t,板幅計17
による板幅b,板厚計18による排出側板厚h,速度計19によ
る圧延速度V,板厚計15による導入側板厚Ｈおよび記憶部
21のロール径Ｒを入力とし、次の（１）式に示す関数ｑ
（ｘ）に基づいて平板を水平ロール12で板厚方向に圧下
したときに生じる圧延荷重PFを算出するものである。The first computing unit 22 has a temperature t measured by the plate thermometer 16 and a plate width meter 17
Sheet width b by the gauge, discharge side sheet thickness h by the sheet gauge 18, rolling speed V by the speedometer 19, introduction side sheet thickness H by the sheet gauge 15, and the storage section
With the roll diameter R of 21 as input, the function q shown in the following equation (1)
Based on (x), the rolling load P F generated when the flat plate is rolled down by the horizontal roll 12 in the plate thickness direction is calculated.
PF＝ｑ（H,h,b,V,t,R） …（１） 第２図の演算器23は、上記第１の演算器22により算出
された平板に対する圧延荷重計算値PFおよび荷重計20に
より測定された水平ロール12のドッグボーン材に対する
圧延荷重実測値Ｐを入力とし、次の（２）式により上記
ドッグボーン材のドッグボーン部に対する圧延荷重計算
値PDを算出するものである。P F = q (H, h, b, V, t, R) (1) The calculator 23 shown in FIG. 2 calculates the rolling load calculation value P F for the flat plate calculated by the first calculator 22 and The rolling load measurement value P for the dog bone material of the horizontal roll 12 measured by the load cell 20 is input, and the rolling load calculation value P D for the dog bone portion of the dog bone material is calculated by the following equation (2). Is.
PD＝Ｐ−PF …（２） 第３の演算器24は、上記第２の演算器22により算出さ
れたドッグボーン部に対する圧延荷重計算値PD,板温度
計13による温度T,板幅計14による板幅B,板厚計15による
導入側板厚H,速度計19による圧延速度V,板厚計18による
排出側板厚ｈおよび記憶部21のロール径Ｒを入力とし、
次の（３）式に示す関数ｆ（ｘ）に基づいてドッグボー
ン高さHDを算出するものである。P D = P−P F (2) The third calculator 24 calculates the rolling load value P D for the dog bone portion calculated by the second calculator 22, the temperature T measured by the plate thermometer 13, and the plate. The strip width B by the width gauge 14, the introduction side strip thickness H by the strip thickness gauge 15, the rolling speed V by the speedometer 19, the discharge side strip thickness h by the strip thickness gauge 18, and the roll diameter R of the storage unit 21 are input.
The dog bone height HD is calculated based on the function f (x) shown in the following equation (3).
PD＝ｆ（HD,H,h,B,V,T,R） …（３） このような構成の本実施例においては、圧延材１は先
ず縦ロール11で板幅方向に圧下され、続いて水平ロール
で板厚方向に圧下されて圧延が行われる。このとき、縦
ロール11による圧延前の圧延材１の温度Ｔが板温度計13
で、板幅Ｂが板幅計14で、板厚Ｈが板厚計15でそれぞれ
計測される。また、水平ロール12による圧延時の圧延速
度Ｖが速度計19で、圧延荷重Ｐが荷重計20でそれぞれ計
測される。さらに、水平ロール12による圧延後の圧延材
１の温度ｔが板温度計16で、板幅ｂが板幅計17で、板厚
ｈが板厚計18でそれぞれ計測される。なお、記憶部21に
は水平ロール12のロール径Ｒが予め格納されている。P D = f (H D , H, h, B, V, T, R) (3) In this embodiment having such a structure, the rolled material 1 is first rolled down by the vertical roll 11 in the plate width direction. Then, it is rolled down by a horizontal roll in the plate thickness direction and rolled. At this time, the temperature T of the rolled material 1 before rolling by the vertical rolls 11 is the plate thermometer 13
Then, the plate width B is measured by the plate width meter 14 and the plate thickness H is measured by the plate thickness meter 15. Further, the rolling speed V at the time of rolling by the horizontal rolls 12 is measured by the speed meter 19, and the rolling load P is measured by the load meter 20. Further, the temperature t of the rolled material 1 after being rolled by the horizontal rolls 12 is measured by the plate thermometer 16, the plate width b is measured by the plate width meter 17, and the plate thickness h is measured by the plate thickness meter 18. The storage unit 21 stores the roll diameter R of the horizontal roll 12 in advance.
そして、板厚計15により測定された導入側板厚H,板厚
計18により測定された排出側板厚ｈ、板幅計17により測
定された板幅ｂ、速度計19で測定された圧延速度Ｖ、板
温度計16で測定された温度ｔ、および記憶部21に格納さ
れたロール径Ｒが第１演算器22に入力される。しかし
て、この第１演算器22においては前記（１）式に基づい
て平板を水平ロール12で板厚方向に圧下したときに生じ
る圧延荷重PFが算出され、この圧延荷重計算値PFは第２
演算器23に送られる。第２演算器23には荷重計20により
測定された圧延荷重実測値Ｐが入力されており、前記
（２）式に基づいてドッグボーン材のドッグボーン部に
対する圧延荷重PDが算出され、この圧延荷重計算値PDは
第３演算器24に送られる。第３演算器24には板厚計15に
より測定された導入側板厚Ｈ、板厚計18により測定され
た排出側板厚ｈ、板幅計14により測定された板幅Ｂ、速
度計19で測定された圧延速度Ｖ、板温度計13で測定され
た温度Ｔ、および記憶部21に格納されたロール径Ｒが入
力されており、前記（３）式に基づいてトックボーン材
のドッグボーン高さHDが推定できる。Then, the inlet side plate thickness H measured by the plate thickness meter 15, the discharge side plate thickness h measured by the plate thickness meter 18, the plate width b measured by the plate width meter 17, and the rolling speed V measured by the speed meter 19 The temperature t measured by the plate thermometer 16 and the roll diameter R stored in the storage unit 21 are input to the first calculator 22. Then, in the first computing unit 22, the rolling load P F generated when the flat plate is rolled down by the horizontal roll 12 in the plate thickness direction is calculated based on the equation (1), and this rolling load calculation value P F is Second
It is sent to the calculator 23. The actual rolling load value P measured by the load meter 20 is input to the second computing unit 23, and the rolling load P D for the dog bone portion of the dog bone material is calculated based on the equation (2). The rolling load calculation value P D is sent to the third computing unit 24. In the third calculator 24, the inlet side plate thickness H measured by the plate thickness meter 15, the discharge side plate thickness h measured by the plate thickness meter 18, the plate width B measured by the plate width meter 14, and the speed meter 19 are measured. The rolling speed V, the temperature T measured by the plate thermometer 13, and the roll diameter R stored in the storage unit 21 are input, and the dogbone height of the stock bone material is calculated based on the equation (3). H D can be estimated.
このように、縦ロール11による板幅方向の圧延により
圧延材１の両縁部が板厚方向に拡がったドッグボーン材
を水平ロール12で板厚方向に圧下する際の圧延荷重Ｐ
は、そのドッグボーン部を圧下することにより生じる圧
延荷重PDと、そのドッグボーン部を除いた平板部を圧下
することにより生じる圧延荷重PFとの和となる。一方、
ドッグボーン部のみを圧下することにより生じる圧延荷
重PDは、前記（３）式に示すようにドッグボーン高さHD
の関数として表わすことができる。したがって、本実施
例のように縦ロール11による板幅方向圧延後の圧延材１
を水平ロール12により板厚方向に圧延したときの圧延荷
重実測値Ｐから、この実測値測定条件と同一条件の下で
平板を水平ロール12で板幅方向に圧延したと仮定して算
出した圧延荷重計算値PFを減じることによって、水平ロ
ール12でドッグボーン部のみを圧下することにり生じる
圧延荷重PDが求められ、この圧延荷重PDから前記（３）
式を逆算することによってドッグボーン高さHDを推定で
きる。As described above, the rolling load P when the dog roll material having both edges of the rolled material 1 expanded in the plate thickness direction by the rolling in the plate width direction by the vertical rolls 11 is rolled down by the horizontal rolls 12 in the plate thickness direction.
Is the sum of the rolling load P D generated by rolling down the dog bone portion and the rolling load P F generated by rolling down the flat plate portion excluding the dog bone portion. on the other hand,
The rolling load P D generated by rolling down only the dog bone part is the dog bone height H D as shown in the above equation (3).
Can be expressed as a function of. Therefore, the rolled material 1 after the plate width direction rolling by the vertical roll 11 as in the present embodiment
Rolling calculated from the rolling load measured value P when the steel sheet was rolled in the plate thickness direction by the horizontal roll 12 on the assumption that the flat plate was rolled in the plate width direction by the horizontal roll 12 under the same conditions as the measured value measurement conditions. By reducing the load calculation value P F , the rolling load P D generated by rolling down only the dogbone portion by the horizontal roll 12 is obtained, and from this rolling load P D , the above (3)
The dog bone height H D can be estimated by back-calculating the formula.
なお、前記実施例においては平板を水平ロール12で圧
延するときの圧延荷重を表わす荷重モデル式として
（１）式を例示し、ドッグボーン材のドッグボーン部を
水平ロール12で圧延するときの圧延荷重を表わす荷重モ
デル式として（３）式を例示したが、各モデル式を他の
要素も含めた関数として表わしてもよいものである。It should be noted that, in the above-mentioned embodiment, the formula (1) is exemplified as a load model formula representing the rolling load when the flat plate is rolled by the horizontal roll 12, and the rolling when the dog bone part of the dog bone material is rolled by the horizontal roll 12 is illustrated. Although the formula (3) is exemplified as the load model formula representing the load, each model formula may be represented as a function including other elements.
［発明の効果］ 以上詳述したように、本発明によれば、縦ロールで圧
延材を板幅方向に圧下した際に該圧延材に生じたドッグ
ボーン高さを圧延中に精度よく推定でき、製品の品質向
上をはかり得る圧延材のドッグボーン高さ推定方法およ
び推定装置を提供できる。[Effects of the Invention] As described in detail above, according to the present invention, it is possible to accurately estimate the dogbone height generated in a rolled material when the rolled material is rolled down by the vertical rolls during rolling. It is possible to provide a dog bone height estimation method and estimation device for rolled material that can improve product quality.
第１図は本発明の一実施例の全体構成図、第２図は縦ロ
ールによる圧延を概念的に示す図、第３図は第２図中Ａ
−Ａ断面を概念的に示す図である。 １……圧延材、11……縦ロール、12……水平ロール、1
3,16……板温度計、14,17……板幅計、15,18……板厚
計、19……速度計、20……荷重計、21……記憶部、22〜
24……第１〜第３演算器。FIG. 1 is an overall configuration diagram of an embodiment of the present invention, FIG. 2 is a diagram conceptually showing rolling by a vertical roll, and FIG. 3 is A in FIG.
It is a figure which shows a -A cross section notionally. 1 …… Rolled material, 11 …… Vertical roll, 12 …… Horizontal roll, 1
3,16 …… Plate thermometer, 14, 17 …… Plate width meter, 15, 18 …… Plate thickness gauge, 19 …… Speedometer, 20 …… Load cell, 21 …… Memory section, 22〜
24: First to third computing units.
Claims (2)
た後、水平ロールにより板厚方向に圧延する圧延装置に
おいて、前記縦ロールによる板幅方向の圧延により前記
圧延材に生じたドッグボーン高さを、板幅方向圧延後の
前記圧延材を前記水平ロールにより板厚方向に圧延した
ときの圧延荷重実測値と、この実測値測定条件と同一条
件の下で平板を前記水平ロールで板厚方向に圧延したと
仮定して算出した圧延荷重計算値とから推定することを
特徴とする圧延材のドッグボーン高さ推定方法。1. A rolling mill for rolling a rolled material in a sheet width direction by a vertical roll and then rolling in a sheet thickness direction by a horizontal roll, wherein a dog bone produced in the rolled material by rolling in the sheet width direction by the vertical roll. Height, the rolling load measured value when the rolled material after rolling in the plate width direction is rolled in the plate thickness direction by the horizontal roll, and a flat plate under the same conditions as this measured value measurement condition. A method for estimating a dogbone height of a rolled material, which comprises estimating from a rolling load calculation value calculated on the assumption that the material is rolled in the thickness direction.
た後、水平ロールにより板厚方向に圧下した圧延材の圧
延を行う圧延装置において、板幅方向圧下後の前記圧延
材を前記水平ロールにより板厚方向に圧下したときの圧
延荷重実測値を算出する実測値算出手段と、前記実測値
の測定条件と同一条件の下で平板を前記水平ロールで板
厚方向に圧下したと仮定したときの圧延荷重計算値を算
出する計算値算出手段と、前記両算出手段により算出さ
れた圧延荷重実測値と圧延荷重計算値とから前記縦ロー
ルにより板幅方向に圧下したとき前記圧延材に生じるド
ッグボーン高さを推定演算するドッグボーン高さ推定演
算手段とを具備しさとこを特徴とする圧延材のドッグボ
ーン高さ推定装置。2. A rolling apparatus for rolling a rolled material in a sheet width direction by a vertical roll and then rolling the rolled material in a sheet thickness direction by a horizontal roll, wherein the rolled material is rolled horizontally in the sheet width direction. It was assumed that the actual value calculation means for calculating the rolling load actual value when rolled down in the plate thickness direction by the roll and the flat plate was rolled down in the plate thickness direction by the horizontal roll under the same conditions as the measurement conditions of the measured value. A calculation value calculating means for calculating the rolling load calculation value when, and the rolling material when the rolling load is reduced in the plate width direction by the vertical roll from the rolling load measurement value and the rolling load calculation value calculated by the both calculating means. An apparatus for estimating a dog bone height of a rolled material, comprising a dog bone height estimating and calculating means for estimating and calculating a dog bone height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1215585A JP2539052B2 (en) | 1989-08-22 | 1989-08-22 | Method and apparatus for estimating dog bone height of rolled material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1215585A JP2539052B2 (en) | 1989-08-22 | 1989-08-22 | Method and apparatus for estimating dog bone height of rolled material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0381002A JPH0381002A (en) | 1991-04-05 |
| JP2539052B2 true JP2539052B2 (en) | 1996-10-02 |
Family
ID=16674871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1215585A Expired - Lifetime JP2539052B2 (en) | 1989-08-22 | 1989-08-22 | Method and apparatus for estimating dog bone height of rolled material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2539052B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158433B (en) * | 2018-09-05 | 2019-11-22 | 太原理工大学 | A kind of prediction of rolling force method of Varying Thickness Plates strip-rolling production |
| CN109530429B (en) * | 2018-11-14 | 2020-07-28 | 宝钢特钢韶关有限公司 | Rolling process for stably producing martensite air valve steel rolled blank |
-
1989
- 1989-08-22 JP JP1215585A patent/JP2539052B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0381002A (en) | 1991-04-05 |
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