JPH01143709A - Rolling method - Google Patents
Rolling methodInfo
- Publication number
- JPH01143709A JPH01143709A JP62302720A JP30272087A JPH01143709A JP H01143709 A JPH01143709 A JP H01143709A JP 62302720 A JP62302720 A JP 62302720A JP 30272087 A JP30272087 A JP 30272087A JP H01143709 A JPH01143709 A JP H01143709A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- thickness
- width direction
- plate thickness
- sheet thickness
- 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
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims description 20
- 239000000463 material Substances 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 5
- 230000009467 reduction Effects 0.000 abstract description 11
- 229910000831 Steel Inorganic materials 0.000 description 15
- 239000010959 steel Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 6
- 238000007668 thin rolling process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000001139 anti-pruritic effect Effects 0.000 description 1
- 239000003908 antipruritic agent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Control Of Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、鋼板等を板厚公差の範囲内で精度よく圧延
する圧延方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rolling method for rolling a steel plate or the like with high precision within a range of plate thickness tolerance.
［従来の技術］
通常、圧延鋼板の厚さ寸法については、需要家の製品仕
様により仕様板厚（Ｔｏ ）及びプラス・マイナスの板
厚公差が指定される。一方、鋼板を圧延すると、その板
厚が種々の要因により圧延方向に変動する。また、一般
に、圧延（長手）方向に直交する断ＷＪ（プロフィル）
がクラウン形状となり、板の幅方向中央部より幅方向端
部のほうが薄くなる。つまり、圧延鋼板を切仮にした場
合に、切板のなかで最も薄くなる幅方向端部の板厚をマ
イナス公差内に納める必要がある。[Prior Art] Normally, regarding the thickness dimension of a rolled steel plate, the specified plate thickness (To) and plus/minus plate thickness tolerance are specified according to the product specifications of the customer. On the other hand, when a steel plate is rolled, its thickness changes in the rolling direction due to various factors. In addition, in general, a cross section WJ (profile) perpendicular to the rolling (longitudinal) direction
has a crown shape and is thinner at the ends in the width direction than at the center in the width direction of the plate. In other words, when a rolled steel plate is cut into pieces, the thickness of the cut plate at its widthwise end, where it is thinnest, must be kept within a negative tolerance.
ところで、車両用薄鋼板において、圧延目標となる製品
板厚及びその公差がＪＩＳ規格等により規定される一方
、切板で製品が取引・販売されるため、製品単価は重量
で決定される。このため、需要家による製品仕様には、
規格公差範囲内の板厚で薄く圧延するもの（所謂、薄目
引き圧延）及び厚く圧延するものく所謂、厚目引き圧延
）等の種々の要求がある。通常、需要家における歩留向
上及び軽量化の観点から、同一重量の製品から多数の切
板を得ることが要望されるので、薄目引ぎ圧延すること
が多い。By the way, in the case of thin steel sheets for vehicles, the product sheet thickness and its tolerances, which are the rolling targets, are specified by JIS standards, etc., but since the products are traded and sold as cut plates, the product unit price is determined by weight. For this reason, product specifications by consumers include:
There are various demands such as thin rolling with a thickness within the standard tolerance range (so-called thin rolling) and thick rolling (so-called thick rolling). Normally, from the viewpoint of improving yield and reducing weight at the consumer level, it is desired to obtain a large number of cut plates from a product of the same weight, so thin rolling is often performed.
第５図を参照して、従来の圧延方法について説明する。A conventional rolling method will be explained with reference to FIG.
従来の圧延方法は、圧延機出口側にて幅中央部の板厚を
圧延方向に連続的に測定検出し、この実測値を圧延機の
制御装置に戻し、幅中央部の板厚が目標板厚範囲内に入
るように圧延機の圧下刃をフィードバック制御する。す
なわち、製品仕様により所定の仕様板厚Ｔｏｓプラス公
差ｔ１、マイナス公差ｔ２が与えられ、従前の圧延実績
から求められた幅中央部の長手方向板厚偏差Ａ、 Ｂ及
び幅方向板厚偏差Ｃが与えられると、目標板厚の範囲Ｔ
ｕ＝ＴＡ（図中の斜線領域）は下記（１）式及び（２）
式により決定される。In the conventional rolling method, the thickness of the sheet at the center of the width is continuously measured and detected in the rolling direction at the exit side of the rolling mill, and this measured value is returned to the control device of the rolling mill. The rolling mill's rolling blade is feedback-controlled to keep the thickness within the range. In other words, a predetermined specified plate thickness Tos plus tolerance t1 and minus tolerance t2 are given according to the product specifications, and the thickness deviations A and B in the longitudinal direction at the width center and the thickness deviation C in the width direction are determined from previous rolling results. Given, the target thickness range T
u = TA (shaded area in the figure) is expressed by the following formula (1) and (2)
Determined by Eq.
Ｔｕ（薄目引き圧延の場合の目標板厚）＝Ｔｏ −ｔｚ
＋３＋Ｃｍ （１）
ＴＡ （厚目引き圧延の場合の目標板厚）＝Ｔｏ ＋
ｔｔ −Ａ −（２）更に、上記偏差
Ａ、Ｂ、Ｃについては、従前の同サイズ材の圧延結果に
バラツキが存在するので、目標板厚に余裕をもたせるた
めに偏差Ａ、Ｂ、Ｃに安全値αをそれぞれ加算している
。Tu (target plate thickness in case of thinning rolling) = To - tz
+3+Cm (1) TA (Target thickness for thick rolling)=To +
tt -A - (2) Furthermore, regarding the above deviations A, B, and C, there are variations in the rolling results of the same size material in the past, so the deviations A, B, and C are changed in order to provide some margin for the target plate thickness. A safety value α is added to each.
［発明が解決しようとする問題点］
しかしながら、従来の圧延方法においては、偏差Ａ、Ｂ
、Ｃのそれぞれに安全値αを加算して目標板厚を設定し
、この高めの目標板厚設定値を圧延中に変更することな
く圧延するので、板厚公差の特に厳しい（狭い）材料を
薄目引き圧延することが困難になるという問題点がある
。[Problems to be solved by the invention] However, in the conventional rolling method, the deviations A and B
, C is added to the safety value α to set the target plate thickness, and this higher target plate thickness setting value is rolled without changing during rolling, so it is possible to roll materials with particularly strict (narrow) plate thickness tolerances. There is a problem that it becomes difficult to carry out thin rolling.
この発明は、かかる事情に鑑みてなされたものであって
、板厚公差の範囲を外れることなく、薄目引き圧延の要
望に適切に対処することができる圧延方法を提供するこ
とを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rolling method that can appropriately meet the demands for thinning rolling without going outside the range of sheet thickness tolerance.
Ｅ問題点を解決するための手段］
この発明に係る圧延方法は、板状の素材を所定の板厚公
差内で圧延する圧延方法において、圧延された素材の幅
方向端部及び幅方向中央部の板厚を圧延過程でそれぞれ
連続的に測定する板厚測定工程と、これらの実測値に基
づき、幅方向端部の板厚が前記板厚公差の下限値を下回
らず、かつ、幅方向中央部の板厚が前記板厚公差の上限
値を上回らない範囲内で、圧延目標となる板厚を計算す
る演算工程と、この計算板厚になるように素材に印加さ
れる圧下刃を制御する圧延制御工程と、を有することを
特徴とする。この場合に、前記板厚測定工程において素
材の幅を測定し、この測定幅を製品仕様幅に換算し、製
品仕様幅に応じた幅方向端部の板厚に換算することが好
ましい。Means for Solving Problem E] The rolling method according to the present invention is a rolling method in which a plate-shaped material is rolled within a predetermined thickness tolerance, and the rolling method rolls a plate-shaped material within a predetermined thickness tolerance. The thickness of the plate is continuously measured during the rolling process, and based on these actual measurements, the thickness of the plate at the edge in the width direction does not fall below the lower limit of the plate thickness tolerance, and the thickness at the center in the width direction is determined. A calculation process for calculating the target plate thickness for rolling within a range where the plate thickness of the part does not exceed the upper limit value of the plate thickness tolerance, and controlling the rolling blade applied to the material so that the calculated plate thickness is achieved. A rolling control process. In this case, it is preferable to measure the width of the material in the plate thickness measurement step, convert this measured width into a product specification width, and convert it into the plate thickness at the widthwise end portion according to the product specification width.
［作用］
第４図に示すように、圧延過程で刻々変化する板厚を実
測すると、主として圧延設備上の要因により、実測板厚
が目標板厚を中心に所定の幅をもって変動する。すなわ
ち、目標板厚と実測板厚上限との偏差（ａ−１８Ｘ）及
び目標板厚と実測板厚下限との偏差（ｂ・−ａＸ ）が
存在し、この範囲内で素材の板厚が種々変動する。[Function] As shown in FIG. 4, when the plate thickness, which changes from moment to moment during the rolling process, is actually measured, the measured plate thickness fluctuates within a predetermined range around the target plate thickness, mainly due to factors on the rolling equipment. In other words, there is a deviation (a-18X) between the target thickness and the upper limit of the actual thickness, and a deviation (b-aX) between the target thickness and the lower limit of the actual thickness, and within this range, the thickness of the material varies. fluctuate.
この発明に係る圧延方法においては、圧延過程で刻々変
化する幅方向中央部及び端部の２種類の板厚をそれぞれ
連続的に測定し、これらの実測値に基づき最適の目標板
厚を決定し、素材に印加される圧下刃を制御する。すな
わち、幅方向中央部の板厚のみでなく、幅方向端部の板
厚をもオンラインで実測し、これらの実測値に基づき目
標板厚をその都度決定するので、下記（３）式に示すよ
うに、目標板厚に安全値αを加算することなく、刻々変
化する板厚変動（Ｉｂ、ｃを用いて目標板厚を設定する
ことができ、公差範囲内で精度良く薄目引き圧延するこ
とができる。In the rolling method according to the present invention, two types of plate thicknesses, one at the center in the width direction and the other at the ends, which change every moment during the rolling process, are continuously measured, and the optimum target plate thickness is determined based on these actual measurements. , controls the reduction blade applied to the material. In other words, not only the plate thickness at the center in the width direction, but also the plate thickness at the edges in the width direction are actually measured online, and the target plate thickness is determined each time based on these measured values, as shown in equation (3) below. As such, the target plate thickness can be set using the ever-changing plate thickness fluctuations (Ib, c) without adding the safety value α to the target plate thickness, and thinning rolling can be performed accurately within the tolerance range. Can be done.
Ｔｕ （薄目引き圧延の場合の目標板厚）＝Ｔｏ−ｔ２
＋ｂ＋ｃ ｍ （３）また、厚目引き圧延
する場合は、下記（４）式に示すように、幅方向中央部
の板厚変動値ａ（オーバー分）を用いて目標板厚を設定
し、目標板厚に安全値αを加算することなく、公差範囲
内で精度良く圧延することができる。Tu (target plate thickness in case of thinning rolling)=To-t2
+b+c m (3) When performing thick rolling, set the target plate thickness using the plate thickness variation value a (over amount) at the center in the width direction, as shown in equation (4) below, and set the target plate thickness. It is possible to roll accurately within the tolerance range without adding a safety value α to the plate thickness.
Ｔ＾（！ｐ目引き圧延の場合の目標板厚）−Ｔ６＋ｔｌ
−ａ −（４）［実施例］
以下、添附の図面を参照して、この発明の実施例につい
て具体的に説明する。T^ (Target thickness for !p grain rolling) - T6 + tl
-a-(4) [Example] Hereinafter, an example of the present invention will be specifically described with reference to the accompanying drawings.
第１図は、この発明の実施例に係る圧延方法が使用され
た圧延装置を示す模式図である。圧延機群１０の下流側
に巻取り８１１４が設けられ、粗圧延された薄鋼板１２
が巻き取られるようになっている。圧延機群１０は、複
数スタンドからなる仕上げ圧延機であり、それぞれの圧
延ロールのギャップがオートゲージコントローラ（ＡＧ
Ｃ）２６により１ｌｌｉｌｌされるようになっている。FIG. 1 is a schematic diagram showing a rolling apparatus in which a rolling method according to an embodiment of the present invention is used. A winding 8114 is provided on the downstream side of the rolling mill group 10, and the roughly rolled thin steel plate 12 is
can be wound up. The rolling mill group 10 is a finishing rolling mill consisting of multiple stands, and the gap between each rolling roll is controlled by an auto gauge controller (AG).
C) It is designed to be increased by 1llill by 26.
検出器１６゜１８．２０が圧延機群１０から巻き取り！
１１４までの圧延ラインに設けられている。検出器１６
は、鋼板１２の幅方向中央部の板厚を連続測定する厚さ
計である。また、検出器１８は、鋼板１２の幅方向端部
の板厚を連続測定する厚さ計である。更に、検出器２０
は、鋼板１２の幅を測定する幅計である。これらの検出
器１６．１８．２０が演算装置２２の入力側に接続され
ている。また、この演痒装ｇＦ２２には１、上位コンピ
ュータ（図示せず）から製品仕様厚さ、公差、並びに、
薄目引き圧延等の製品仕様が入力されるようになってい
る。制御装ｆｆ１２４の入力側が、演算装置２２の出力
側及び圧延機群１０の圧下量をそれぞれ検出するための
センサ群（図示せず）に接続されている。また、ＩＩＪ
ＩＩｌ装Ｗ１２４装出１２４ＡＧＣ２６の入力側に接続
されている。この制御装置２４は、比較器を有しており
、刻々変化する板厚変動値ａ、ｂが零になるようにＡＧ
Ｃ２６の動作がＩＩＩ御されるようになっている。Detector 16°18.20 rolls from rolling mill group 10!
It is installed on rolling lines up to 114. Detector 16
is a thickness gauge that continuously measures the thickness of the central portion of the steel plate 12 in the width direction. Further, the detector 18 is a thickness gauge that continuously measures the thickness of the ends of the steel plate 12 in the width direction. Furthermore, the detector 20
is a width gauge for measuring the width of the steel plate 12. These detectors 16, 18, 20 are connected to the input side of the computing device 22. In addition, this antipruritic device gF22 includes 1. Product specifications, thickness, tolerance, and information from a host computer (not shown).
Product specifications such as thin rolling are now input. The input side of the control device ff124 is connected to the output side of the arithmetic unit 22 and a sensor group (not shown) for detecting the rolling reduction amount of the rolling mill group 10, respectively. Also, IIJ
IIl unit W124 unit 124 is connected to the input side of AGC26. This control device 24 has a comparator, and controls AG so that the plate thickness fluctuation values a and b, which change every moment, become zero.
The operation of C26 is controlled by III.
次に、鋼板を薄目引き圧延する場合の動作について説明
する。Next, an explanation will be given of the operation when thinning and rolling a steel plate.
仕様板厚２．００ａ転厚さ公差±０．２０１１．薄目引
ぎ圧延の指定、からなる製品仕様を演算装置２２に入力
する。このとき、圧延開始時にのみ、同一使用材料の過
去の実績値から得られた長手方向の板厚偏差ｂ・−ａＸ
及び幅方向の板厚偏差Ｃ並びに安全値αを加算し、目標
板厚を（１，８０＋ ｂ −１ａＸ ＋Ｃ＋α） Ｕ＋
にプリセットする。圧延を開始すると、検出器１６．１
８．２０により幅方向中央部の板厚、幅方向端部の板厚
、幅長さがそれぞれ検出されるので、これらを演算装置
２２に入力すると共にプリセット時に加算した安全値α
を解消し、板厚変動の実測値す、ｃ及び実測幅Ｗ１に基
づき目標板厚を算出する。、算出された目標板厚の信号
を制御装！２４に入力し、圧延機群１０の各センサから
制御装置２４に入力される圧下量に基づき求められた目
標板厚の信号と前記算出目標板厚の信号とを比較し、両
者の電圧差が零になるまでＩＩｊＩＩ１１ｉ１２４によ
りＡＧＣ２６を１ＩＩＩＪｉＩｌシ、圧延機群１０の圧
下量を補正する。Specification Plate thickness 2.00a Rolled thickness tolerance ±0.2011. A product specification consisting of a designation for thinning rolling is input into the calculation device 22. At this time, only at the start of rolling, the plate thickness deviation b・-aX in the longitudinal direction obtained from past actual values of the same material used.
and the thickness deviation C in the width direction and the safety value α, and the target thickness is (1,80+ b −1aX +C+α) U+
Preset to . When rolling starts, the detector 16.1
8.20, the plate thickness at the center in the width direction, the plate thickness at the ends in the width direction, and the width length are respectively detected, and these are input to the calculation device 22 and the safety value α added at the time of presetting.
, and calculate the target plate thickness based on the actual measured values of plate thickness variation S and c and the measured width W1. , control the signal of the calculated target plate thickness! 24, and compares the signal of the target plate thickness obtained based on the rolling reduction amount inputted to the control device 24 from each sensor of the rolling mill group 10 with the signal of the calculated target plate thickness, and determines the voltage difference between the two. The AGC 26 is turned 1IIIJiIl by IIjII11i124 until it becomes zero, and the rolling reduction amount of the rolling mill group 10 is corrected.
第２図は圧延中の鋼板の板厚変動を説明するための模式
的図である。図中、曲線Ｅは連続検出による幅方向中央
部板厚の実測値を、曲線Ｆ、Ｇ１゜Ｇ２ 、 Ｃｐｓ
、 Ｈはそれぞれの位置における幅方向の板厚分布を示
す。なお、図中の二点鎖線は仕様板厚Ｔ。からマイナス
公差ｔ２を引いた板厚レベルを、破線は公差上限及び下
限のそれぞれの板厚レベルを表わす。図に示すように、
曲線Ｅの山では曲線Ｆを曲線Ｇ１に変更するようにロー
ル圧下量を補正し、曲線Ｅの谷では曲ＩＨを曲線Ｇ３に
変更するようにロール圧下量を補正する。また、曲線Ｅ
が二点ｔａ線に交差するところではロール圧下量を補正
せず、曲線Ｇ２のままである。FIG. 2 is a schematic diagram for explaining changes in the thickness of a steel plate during rolling. In the figure, curve E indicates the actual measured value of the thickness of the central part in the width direction by continuous detection.
, H indicates the thickness distribution in the width direction at each position. The two-dot chain line in the figure is the specified plate thickness T. The dashed line represents the plate thickness level obtained by subtracting the minus tolerance t2 from t2, and the broken lines represent the plate thickness levels at the upper and lower limits of the tolerance. As shown in the figure,
At the peak of curve E, the roll reduction amount is corrected to change curve F to curve G1, and at the valley of curve E, the roll reduction amount is corrected to change curve IH to curve G3. Also, curve E
Where the curve intersects the two-point ta line, the roll reduction amount is not corrected and remains the curve G2.
第３図は鋼板の一部を幅方向に切断した断面模式図であ
る。通常、薄鋼板においては、圧延材をそのまま製品と
せず、その幅方向両端部を切断除去するので、圧延材の
実測幅Ｗ１を製品仕様幅Ｗ２より若干（例えば、約３＋
ｅｇ＋）広くする。このため、演算装置１２２において
、幅計（検出器２０）で測定された実測幅Ｗ１を製品仕
様幅Ｗ２に補正し、この製品仕様幅Ｗ２に基づき幅方向
端部の実測厚さを板厚偏差Ｃに換算する。FIG. 3 is a schematic cross-sectional view of a part of the steel plate cut in the width direction. Normally, for thin steel sheets, the rolled material is not made into a product as is, but both ends in the width direction are cut and removed, so the measured width W1 of the rolled material is slightly smaller than the product specification width W2 (for example, about 3+
eg+) make it wider. Therefore, the arithmetic unit 122 corrects the actual width W1 measured by the width meter (detector 20) to the product specification width W2, and calculates the actual thickness at the end in the width direction based on the product specification width W2. Convert to C.
上記実施例によれば、幅計により板幅を正確に測定する
ので、幅方向端部の板厚偏差を精度良く把握することが
できる。According to the embodiment described above, since the width of the board is accurately measured using a width meter, the deviation in the board thickness at the ends in the width direction can be accurately determined.
なお、幅方向の板厚偏差（クラウン）を低下させるため
、ベンダー値から又はＶＣロールを制御する方法を併用
しても、この発明の作用では上記クラウンを実測した上
で圧下コントロールを行なうので、何ら問題を生じない
。Furthermore, in order to reduce the plate thickness deviation (crown) in the width direction, even if a method of controlling the bender value or the VC roll is used in combination, the effect of the present invention is that the rolling reduction is controlled after actually measuring the crown. Does not cause any problems.
［発明の効果］
この発明によれば、素材板厚を幅方向中央部及び幅方向
端部についてオンラインで測定し、これらの実測値に基
づき目標板厚をリアルタイムで補正するので、従来のバ
ラツキを考慮した安全値を目標板厚に加算する必要がな
くなり、目標板厚の設定範囲を広くすることができる。[Effects of the Invention] According to the present invention, the material plate thickness is measured online at the widthwise central portion and the widthwise end portions, and the target plate thickness is corrected in real time based on these actual measurements, thereby eliminating the conventional variation. There is no need to add the considered safety value to the target plate thickness, and the setting range of the target plate thickness can be widened.
このため、板厚公差の範囲を外れることなく、跡目引き
圧延することができ、需要家の歩留り向上及び軽量化の
要望に適切に対処することができる。For this reason, it is possible to carry out track rolling without going outside the range of plate thickness tolerance, and it is possible to appropriately meet the demands of customers for yield improvement and weight reduction.
第１図はこの発明の第１の実施例に係る圧延方法が使用
された圧延装置を示す模式図、第２図は板厚変動を説明
するための模式図、第３図は鋼板の一部を幅方向に切断
した断面模式図、第４図は実操業において変動する実測
板厚を示す模式図、第５図は従来の圧延方法における目
標板厚の設定について説明する図である。
１０；圧延機群、１２；鋼板、１４：巻取り機、１６．
１８．２０：検出器、２２；演算装置、２４ ： ＩＩ
Ｉ御装置、２６；オートゲージコントローラ。
出願人代理人 弁理士 鈴江武彦
第 １ 図
円２
第 ２ 辺
第３図
第５図Fig. 1 is a schematic diagram showing a rolling apparatus in which the rolling method according to the first embodiment of the present invention is used, Fig. 2 is a schematic diagram for explaining plate thickness variation, and Fig. 3 is a part of a steel plate. FIG. 4 is a schematic cross-sectional view taken in the width direction, FIG. 4 is a schematic diagram showing the actually measured plate thickness that varies during actual operation, and FIG. 5 is a diagram illustrating setting of the target plate thickness in the conventional rolling method. 10; Rolling mill group, 12; Steel plate, 14: Winding machine, 16.
18.20: Detector, 22; Arithmetic device, 24: II
I control device, 26; auto gauge controller. Applicant's Representative Patent Attorney Takehiko Suzue No. 1 Figure Circle 2 Second Side Figure 3 Figure 5
Claims (2)
法において、圧延された素材の幅方向端部及び幅方向中
央部の板厚を圧延過程でそれぞれ連続的に測定する板厚
測定工程と、これらの実測値に基づき、幅方向端部の板
厚が前記板厚公差の下限値を下回らず、かつ、幅方向中
央部の板厚が前記板厚公差の上限値を上回らない範囲内
で、圧延目標となる板厚を計算する演算工程と、この計
算板厚になるように素材に印加される圧下刃を制御する
圧延制御工程と、を有することを特徴とする圧延方法。(1) In a rolling method in which a plate-shaped material is rolled within a predetermined thickness tolerance, the thickness of the rolled material at the ends in the width direction and the center in the width direction is continuously measured during the rolling process. Based on the measurement process and these measured values, the thickness of the plate at the ends in the width direction does not fall below the lower limit of the plate thickness tolerance, and the thickness of the plate at the center in the width direction does not exceed the upper limit of the plate thickness tolerance. A rolling method comprising: a calculation step for calculating a target plate thickness for rolling within a range; and a rolling control step for controlling a rolling blade applied to the material so as to achieve the calculated plate thickness.
の測定幅を製品仕様幅に換算し、製品仕様幅に応じた幅
方向端部の板厚に換算することを特徴とする特許請求の
範囲第１項に記載の圧延方法。(2) A patent claim characterized in that in the plate thickness measuring step, the width of the material is measured, this measured width is converted to a product specification width, and the plate thickness at the end in the width direction is converted according to the product specification width. The rolling method according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62302720A JPH01143709A (en) | 1987-11-30 | 1987-11-30 | Rolling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62302720A JPH01143709A (en) | 1987-11-30 | 1987-11-30 | Rolling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01143709A true JPH01143709A (en) | 1989-06-06 |
Family
ID=17912356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62302720A Pending JPH01143709A (en) | 1987-11-30 | 1987-11-30 | Rolling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01143709A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009524743A (en) * | 2006-01-26 | 2009-07-02 | アルヴェーディ、ジョヴァンニ | Hot-rolled duplex steel sheets with the characteristics of cold-rolled steel sheets |
-
1987
- 1987-11-30 JP JP62302720A patent/JPH01143709A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009524743A (en) * | 2006-01-26 | 2009-07-02 | アルヴェーディ、ジョヴァンニ | Hot-rolled duplex steel sheets with the characteristics of cold-rolled steel sheets |
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