JPS60213306A - Method for controlling sheet thickness in rolling mill - Google Patents
Method for controlling sheet thickness in rolling millInfo
- Publication number
- JPS60213306A JPS60213306A JP59069011A JP6901184A JPS60213306A JP S60213306 A JPS60213306 A JP S60213306A JP 59069011 A JP59069011 A JP 59069011A JP 6901184 A JP6901184 A JP 6901184A JP S60213306 A JPS60213306 A JP S60213306A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- pressure
- plate thickness
- strip
- 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.)
- Granted
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
- B21B37/58—Roll-force control; Roll-gap 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
- B21B1/30—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 non-continuous process
- B21B1/32—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
-
- 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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/22—Pass schedule
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は板厚制御方法に係り、特に尻抜は時の荷重、圧
下位置、出側板厚の実測値を用いて設定値を修正しオフ
ゲージを最小にする板厚制御方法に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a plate thickness control method, and in particular, in the case of bottom removal, the off-gauge is corrected by correcting the set value using the actual measured values of the load at the time of bottom removal, the rolling position, and the exit side plate thickness. This invention relates to a method of controlling plate thickness to minimize it.
板厚制御、形状制御を行ない定常状態でのストリップ品
質は格段に向上している。又省力化及び歩留向上を目的
として完全連続式圧延が実施されつつある。又、板厚も
従来の０．２−０．３ ｖｍでなく、０、０２−０．０
５ｍを成品とする極薄圧延が行なわれるようになった。By controlling the plate thickness and shape, the strip quality in steady state has been significantly improved. Furthermore, fully continuous rolling is being implemented for the purpose of saving labor and improving yield. Also, the plate thickness is 0.02-0.0 vm instead of the conventional 0.2-0.3 vm.
Ultra-thin rolling, which produces finished products of 5 m, has begun to be carried out.
ところが、板厚のセットアツプ方式が従来と同一のため
、オフゲージ長さはほとんど改善されていない。即ち、
数式モデルにより圧延荷重Ｐｏを計算し、ロール組替後
のＳｏとロール組替後の圧延時間によシロールヒートア
ップ量ΔＳｏを推定し、（１）式により圧下位置Ｓをめ
設定する方式をとっている。However, because the plate thickness set-up method is the same as the conventional one, the off-gauge length has hardly been improved. That is,
A formula model is used to calculate the rolling load Po, the roll heat-up amount ΔSo is estimated based on So after the roll change and the rolling time after the roll change, and the rolling position S is set using the formula (1). ing.
Ｓ ＝ ｈ ｏ Ｐｏ／Ｋ Ｓｏ−ΔＳｏ −（１）こ
こにｈｏは目標板厚、Ｋはミルのバネ定数又、圧延荷重
Ｐｏの学習は定常圧延時の板厚及び圧延荷重を使用して
いるため、設定直後の低速では、オイルフィルム、摩擦
係数等の推定誤差を含んでおシ、５〜１０チも誤差があ
る。又、第１図（Ａ）＠に示すごとく、ロールヒートア
ップ量ΔＳ。S = ho Po / K So - ΔSo - (1) where ho is the target plate thickness, K is the spring constant of the mill, and the plate thickness and rolling load during steady rolling are used to learn the rolling load Po. Therefore, at low speeds immediately after setting, there is an error of 5 to 10 times, including estimation errors of oil film, friction coefficient, etc. Also, as shown in FIG. 1(A)@, the roll heat-up amount ΔS.
は圧延動力に関係なくロール組替後の圧延時間で推定す
るため組替後の５〜６本においては２〇−６０μ程度の
エラを生じる。同図（Ａ）は荷重が比較的に大きい場合
、０３）は小さい場合の例示である。Since it is estimated based on the rolling time after changing the rolls regardless of the rolling power, an error of about 20-60μ occurs in 5 to 6 rolls after changing the rolls. The figure (A) shows an example when the load is relatively large, and 03) shows an example when the load is small.
又第２図囚、＠に示すごとくミルのバネ定数は板巾、油
圧シリンダ位置によって変化する。従来の板巾による補
正はオフラインで実測して補正しているが、油圧シリン
ダーによる補正は行なわれていないため、５０〜２００
μのエラを生じている。Also, as shown in Figure 2, the spring constant of the mill changes depending on the plate width and the position of the hydraulic cylinder. Conventional board width corrections are made by actually measuring them off-line, but since corrections are not made using hydraulic cylinders,
This is causing an error in μ.
又第３図（Ａ）〜０に示すごとく母材の先端は５０−３
００μ程度公称母材板厚より厚くなっている。Also, as shown in Figure 3 (A) ~ 0, the tip of the base material is 50-3
It is approximately 0.00μ thicker than the nominal base material thickness.
第３図囚〜（Ｑはそれぞれ３コの場合の例示である。Figure 3 (Q) is an example of three cases.
そのため公称母材板厚を基に設定計算をやりその計算に
誤差がなくロールヒートアップ量、ミルのバネ定数にも
誤差がないとしても成品の先１１１１は母材板厚変動分
に相当する分だけ厚くなってしまう。Therefore, even if the setting calculation is performed based on the nominal base material thickness and there is no error in the calculation and there is no error in the roll heat-up amount or the spring constant of the mill, the tip 1111 of the finished product will be equal to the variation in the base material thickness. It just gets thicker.
本発明の目的は上記の従来の学習制御の欠点を除去し、
ストリップの先端からオンゲージにする板厚制御方法を
提供することにある。The purpose of the present invention is to eliminate the above-mentioned drawbacks of conventional learning control,
The object of the present invention is to provide a method for controlling the thickness of a strip by turning it on-gauge from the tip of the strip.
本発明による板厚制御方法は、被圧延材の灰抜は速度に
おける圧延圧力を検出し、該検出された圧延圧力を用い
て次圧延材の圧延圧力を修正し、被圧延材終了時におけ
るロールヒート２ツグ量を用いて次圧延材のためのロー
ル圧下位置を修正し、該修正された圧延圧力および圧下
位置にょシ次圧延材の板厚制御を行なうととｌ’ｌ微が
るる。The plate thickness control method according to the present invention detects the rolling pressure at the ash removal speed of the rolled material, uses the detected rolling pressure to correct the rolling pressure of the next rolled material, and rolls the rolled material at the end of rolling. If the roll reduction position for the next rolled material is corrected using the heat 2 toggle amount, and the plate thickness of the next rolled material is controlled based on the corrected rolling pressure and reduction position, it will be very difficult.
はじめに本発明の基本的な考え方について述べる。 First, the basic idea of the present invention will be described.
灰抜は速度まで減速した状態で入側板厚Ｈ１、出側板厚
り、及び圧延圧力Ｐ、を実測し、ストリップのトラッキ
ングによシ同−ストリップ点のＨ，、ｈ、、Ｐ、を選択
する。実測したＨ、、ｈ。During ash removal, the inlet side plate thickness H1, outlet side plate thickness, and rolling pressure P are actually measured while decelerating to the speed, and the same strip points H, , h, , P are selected for strip tracking. . Actually measured H,,h.
をもとに数式モデルにより圧延圧力Ｐｃを計算し、Ｚ
、 −Ｐ 、 ／ Ｐ ｃなるｚＰを算出し、次スケジ
ュール計算時Ｚ 、 Ｐｃを計算圧延圧力として使用す
る。Calculate the rolling pressure Pc using a mathematical model based on Z
, -P, /Pc is calculated, and Z and Pc are used as the calculated rolling pressure when calculating the next schedule.
これによりオイルフィルム、摩擦係数の推定誤差を除去
する。This eliminates oil film and friction coefficient estimation errors.
又灰抜は速度まで減速した状態において圧下位ａＳ、も
実測しておき同一ストリップ点のり、。Also, when removing ash, we measured the reduction aS when the speed was reduced to the same strip point.
Ｐ、、Ｓ、を使用しく２）によりＳｏを算出する。Using P,,S,, calculate So by 2).
８ ｏ ＝ ｈ、 −Ｐ−／に＋ ８− −（２）但し
、ここにおいてバネ定数ＫＫは以下に述べるストリップ
先端において実測したに１を使用する。これによシ次ス
ケジュール設定直前のＳｏを実測によ請求めるため、次
スケジュール設定までのロールヒートアップ量の変動は
無視しうるほど小さくなる。8o=h, -P-/+8--(2) However, here, the spring constant KK is 1, which was actually measured at the tip of the strip described below. As a result, So immediately before the next schedule is set can be actually measured, so that fluctuations in the roll heat-up amount until the next schedule is set are negligibly small.
以上のＺｐＰｃ及びＳｏｌに使用して（３）式よシ次ス
ケジュールの圧下位置Ｓｆ：算出し、設定する。Using the above ZpPc and Sol, calculate and set the rolling position Sf of the next schedule according to equation (3).
Ｓ ＝ Ｔｈｏ −Ｚ、 Ｐｃ ／ＫＩ−８ｏ −（３
ゝ但しｈｏは出側目標板厚
（３）式においては入側板厚は目標板厚Ｈｏ、及びミル
のバネ常数Ｋｌは前コイル時のバネ定数を使用している
ため出側板厚変動Δ１１＝０とすることは不可能である
。そのため設定後の母板板厚変動ΔＨｍ、出側板厚変動
Δｈ、圧延圧力変動ΔＰ。S = Tho −Z, Pc /KI-8o −(3
However, in Equation (3), ho is the outlet side target thickness, the inlet side plate thickness is the target plate thickness Ho, and the mill spring constant Kl uses the spring constant of the previous coil, so the outlet side plate thickness variation Δ11 = 0 It is impossible to do so. Therefore, after setting, the mother plate thickness variation ΔHm, the outlet side plate thickness variation Δh, and the rolling pressure variation ΔP.
を測定し、ストリップのトラッキングにより同一ストリ
ップ点のΔＨａｌ ΔＰ、、Δｈ、を選択（４）及び（
５）式によりミルのバネ定数Ｋ及び材料の塑性係数Ｍを
算出する
ΔＰ、＝にΔｈ、 ・・・（４）
ΔＦ、＝Ｍ（ΔＨ１−Δｈ、） ・・・（５）第４図に
（４） 、 （５）式の関係を示す。１は材料特性を示
しその傾きが型性係数Ｍでろシ、２はミルの圧下特性を
示しその傾きはバネ定数にでろる。ここにおいて
ΔＰ、＝Ｐｚ Ｐｔ
ｊ Ｈ−＝Ｈｚ ＨＩ
Δｈ、 ＝１１２−ｈｌ
とすれば、（４）、 ６）式を容易に算出することが出
来る。, and select ΔHal ΔP, , Δh, at the same strip point by tracking the strip (4) and (
5) Calculate the spring constant K of the mill and the plasticity coefficient M of the material using the formula ΔP, = Δh, ... (4) ΔF, = M (ΔH1 - Δh,) ... (5) In Figure 4 The relationship between equations (4) and (5) is shown below. 1 indicates the material properties, and its slope is the moldability coefficient M, and 2 indicates the rolling characteristics of the mill, and its slope corresponds to the spring constant. Here, if ΔP,=Pz Pt j H-=Hz HI Δh, =112-hl, equations (4) and 6) can be easily calculated.
又、同様にΔｈ、＝ｈ、−ｈ、を修正するための圧下補
正量ΔＳは（６）式となることは容易に算出できる。Similarly, it can be easily calculated that the reduction correction amount ΔS for correcting Δh, =h, -h is expressed by equation (6).
ΔＳ ＝ （Ｋ十Ｍ／Ｋ）ｘΔｈ、 ・・・（６）Ｋ、
Ｍの学習後直ちに実測した入側板厚変動ΔＨをもとに（
７）式により圧下修正量ΔＳをめ補正を行ない出側板厚
変動Δｈ＝Ｑとすることが出来る。ΔS = (K0M/K) x Δh, ... (6) K,
Based on the entrance plate thickness variation ΔH that was actually measured immediately after learning M, (
By using the formula 7), the reduction correction amount ΔS can be corrected to make the exit side plate thickness variation Δh=Q.
ΔＳ＝（Ｍ／Ｋ）ΔＨ・・・（７）
この補正は入側板厚変動点が出側厚み計に到達後補正開
始となシ若干のオフゲージストリップを生じるかに、Ｍ
の補正が不要の場合Ｕ（８）、 （９）式により出側板
厚変動全算出しく６）式を使用して設定値Δｈ、 ＝１
１．−ｈｏ ・・・（９）又、Ｍの補正が不要の場曾は
圧下設定後のストリップ位置が出側厚み計に到達後（４
）式を使用してＫの修正を行ない（６）式にて圧下位置
の修正をかけることが出来る。又、ストリップの進行に
合せ、設定直後の圧下位置修正、Ｋ補正後の圧下位置修
正、Ｍ補正後の圧下位置修正と３段階にわけて出側板厚
変動をＯＫ修正することも可能である。ΔS=(M/K)ΔH...(7) This correction starts after the inlet thickness variation point reaches the outlet thickness gauge, and may cause some off-gauge stripping.
If no correction is required, use equations U(8) and (9) to calculate the total thickness variation on the exit side.Use equation 6) to obtain the set value Δh, = 1
1. -ho...(9) Also, if correction of M is not required, after the strip position after setting the reduction reaches the exit thickness gauge (4
) can be used to correct K, and the rolled position can be corrected using equation (6). Further, as the strip progresses, it is also possible to correct the exit side plate thickness variation in three stages: correction of the reduction position immediately after setting, correction of the reduction position after K correction, and correction of reduction position after M correction.
第５図に、Ｋ、Ｍ補正が不要の場合の６段可逆圧延機へ
の実施例を示す。第５図において、１は圧延機、２，３
は厚み針、４ｔｉ圧下位置検出器、５は荷重検出器、６
は圧下位置制御装置、７は（２）式にもとすいたＳｏ算
出装置、８は（３）式にもとずいた圧下位置Ｓ算出装置
、９は圧延圧力算出装置である。ここにおいて圧延圧力
Ｐｃｔ計算によってめなくてもテーブル方式で記憶され
た設定圧延圧力でおってもよい。そのときも同様に２．
を前圧延終了直前にめ、次スケジュールに適用すること
になる。FIG. 5 shows an example of a six-high reversible rolling mill in which K and M corrections are not required. In Fig. 5, 1 is a rolling mill, 2, 3
is a thickness needle, 4ti pressure down position detector, 5 is a load detector, 6
7 is a rolling position control device, 7 is a So calculating device based on equation (2), 8 is a rolling position S calculating device based on equation (3), and 9 is a rolling pressure calculating device. Here, instead of calculating the rolling pressure Pct, a set rolling pressure stored in a table format may be used. At that time, 2.
The schedule will be calculated just before the end of the previous rolling and will be applied to the next schedule.
第６図に、ロールヒートアッグ、Ｋ及びＭの補正を行う
場合の６段可逆圧延機への実施列を示す。FIG. 6 shows an implementation train for a six-high reversible rolling mill when correcting roll heat ag, K and M.
第６図において１は圧延機、２，３は厚み針、４は圧下
位置検出器、５は荷重検出器、６は圧下位置制御装置、
７は（２）式にもとすいた８ｏ算出装置、８は（３）式
にもとずいた圧下位置Ｓ算出装置、９は圧延圧力算出装
置、１０ ＃ｔ（４） 、 （５） 、 （６） 、
（８） 、 （９）式にもとすいたΔＳ算出装置である
。In FIG. 6, 1 is a rolling machine, 2 and 3 are thickness needles, 4 is a rolling position detector, 5 is a load detector, 6 is a rolling position control device,
7 is an 8o calculation device based on formula (2), 8 is a rolling position S calculation device based on formula (3), 9 is a rolling pressure calculation device, 10 #t(4), (5), (6),
This is a ΔS calculation device based on equations (8) and (9).
６段可逆圧延機にて説明したが、２段、４段。The explanation was given using a 6-high reversible rolling mill, but there are 2-high and 4-high rolling mills.
２０段可逆圧延機においても同一の方式にて板厚修正が
可能であるだけでなく。２台以上の厚み針を設けたタン
デム圧延機にても同一の方式で板厚修正が可能となる。Not only is it possible to modify plate thickness using the same method on a 20-high reversible rolling mill, but also on a 20-high reversible rolling mill. The plate thickness can be corrected using the same method even in tandem rolling mills equipped with two or more thickness needles.
但し、厚み計がないスタンドにおいては公知のマスフロ
式をＩ史用しスタンド出側板厚ｔｌ、をめ（２）（４）
（ｓ）式を適用すればよい。However, for stands that do not have a thickness gauge, use the known mass flow method and measure the stand outlet plate thickness tl (2) (4)
Equation (s) may be applied.
又図５において７，８．９の制御ｌｌ装置、図６におい
て？、８，９．１０の制御装置は計Ｓ徐におきかえて制
御することも可能である。Also, the control devices 7 and 8.9 in FIG. 5, and the control devices 7 and 8.9 in FIG. , 8, 9, and 10 can be replaced with the control device S.
またリバースミルにおいては徐動速度又は通板速度から
オンゲージに入れることが出来、従来圧延速度の３０〜
５０％にならないとオンゲージにならなかったため３０
〜１００ｍあったオフゲージを３〜６ｍにすることが出
来る。In addition, in a reverse mill, it is possible to enter on-gauge from slow speed or threading speed, and from 30 to the conventional rolling speed.
30 because it didn't turn on gauge until it reached 50%.
It is possible to reduce the off-gauge distance from ~100m to 3-6m.
また半連続式タンデム圧延機において通板速度よりオン
ゲージに入れることが出来るため従来の圧延機では３０
〜１００ｍあったオフゲージを５〜１０ｍにすることが
出来る。In addition, in a semi-continuous tandem rolling mill, the threading speed can be increased to on-gauge, so conventional rolling mills can
It is possible to reduce the off-gauge distance from ~100m to 5-10m.
また完全連続式タンデム圧延機においてはスケジュール
変更点でのオフゲージ１０〜３０ｒｎ；ｈつたものを２
〜３ｍにすることが出来る。In addition, in a fully continuous tandem rolling mill, the off-gauge at the schedule change point is 10 to 30rn;
It can be made up to 3m.
本発明によるとオフゲージ長を減少させることができる
。According to the present invention, off-gauge length can be reduced.
第１図はロールヒートアップ量を、第２図ｋ＞０３）は
ミルのバネ定数を、第３図は板厚偏差、第４図はミルバ
ネ定数と塑性係数Ｍの算出説明図を第５図は本発明の実
施例を第６図は本発明の他の実施例をそれぞれ示す。
１・・・圧延機、２，３・・・板厚針、４・・・圧下位
置検出器、５・・・荷重検出器、７・・・Ｓｏ算出装置
、８・・・圧下位置Ｓの算出装置、９・・・圧延圧力算
出装置。
第 ｌ 図
第２図
５由圧シソンタ＆置
第３図
ストリン１元煽 スＦリッグ抜肩
第ｑ図
第５図Figure 1 shows the amount of roll heat-up, Figure 2 shows the spring constant of the mill (k>03), Figure 3 shows the plate thickness deviation, Figure 4 shows the calculation explanation of the mill spring constant and plasticity coefficient M, and Figure 5 shows the calculation of the mill spring constant and plasticity coefficient M. 6 shows an embodiment of the invention, and FIG. 6 shows another embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Rolling machine, 2, 3... Plate thickness needle, 4... Rolling down position detector, 5... Load detector, 7... So calculation device, 8... Rolling down position S Calculation device, 9... Rolling pressure calculation device. Fig. l Fig. 2 Fig. 5 Pressure transfer & installation Fig. 3 String 1 source fanning S F rig removal shoulder Fig. q Fig. 5
Claims (1)
で被圧延材を圧延する圧延機における板厚制御方法にお
いて、該被圧延材の尻抜は速度における圧延圧力を検出
し、該検出された圧延圧力を用いて次圧延材の圧延圧力
を修正し、被圧延材終了時におけるロールヒートアップ
量を用いて次圧厚制御をおこなうことを特徴とする圧延
機における板厚制御方法。 ２ 前記特許請求の範囲第１項記載の修正後の圧延にお
いて、該圧延機の入側板厚、出側板厚および圧延圧力検
出値から圧延機のバネ定数と材料の塑性係数とを演算し
、該演算値を用いて圧下の修正をおこなうことを特徴と
する圧延機における板厚制御方法。[Claims] 1. In a method for controlling plate thickness in a rolling mill that has at least one pair of rolls and rolls a material to be rolled between the rolls, the bottom removal of the material to be rolled is performed by detecting the rolling pressure at a speed. A plate thickness in a rolling mill characterized in that the rolling pressure of the next rolled material is corrected using the detected rolling pressure, and the next rolling thickness is controlled using the roll heat-up amount at the end of the rolled material. Control method. 2. In the rolling after the modification described in claim 1, the spring constant of the rolling mill and the plasticity coefficient of the material are calculated from the input side plate thickness, exit side plate thickness, and rolling pressure detection value of the rolling mill, and A method for controlling plate thickness in a rolling mill, characterized by correcting the rolling reduction using a calculated value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59069011A JPS60213306A (en) | 1984-04-09 | 1984-04-09 | Method for controlling sheet thickness in rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59069011A JPS60213306A (en) | 1984-04-09 | 1984-04-09 | Method for controlling sheet thickness in rolling mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60213306A true JPS60213306A (en) | 1985-10-25 |
| JPH0364206B2 JPH0364206B2 (en) | 1991-10-04 |
Family
ID=13390219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59069011A Granted JPS60213306A (en) | 1984-04-09 | 1984-04-09 | Method for controlling sheet thickness in rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60213306A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013049074A (en) * | 2011-08-30 | 2013-03-14 | Kobe Steel Ltd | Rolling method and rolled sheet material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5847922A (en) * | 1981-09-17 | 1983-03-19 | Matsushita Electric Ind Co Ltd | Combustion controller |
-
1984
- 1984-04-09 JP JP59069011A patent/JPS60213306A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5847922A (en) * | 1981-09-17 | 1983-03-19 | Matsushita Electric Ind Co Ltd | Combustion controller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013049074A (en) * | 2011-08-30 | 2013-03-14 | Kobe Steel Ltd | Rolling method and rolled sheet material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0364206B2 (en) | 1991-10-04 |
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