JPS629704A - Hot rolling method - Google Patents
Hot rolling methodInfo
- Publication number
- JPS629704A JPS629704A JP60147760A JP14776085A JPS629704A JP S629704 A JPS629704 A JP S629704A JP 60147760 A JP60147760 A JP 60147760A JP 14776085 A JP14776085 A JP 14776085A JP S629704 A JPS629704 A JP S629704A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- tension
- rollers
- rolled material
- induction heating
- 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
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
-
- 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
- B21B1/24—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 continuous or semi-continuous process
- B21B1/26—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 continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は熱間圧延方法に関するもので、さらに詳しくは
仕上圧延機スタンド間に圧延材を加熱する誘導加熱装置
を配置し、その加熱効率を最大限に発揮させることがで
きる熱間圧延方法に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a hot rolling method, and more specifically, an induction heating device for heating a rolled material is arranged between stands of a finishing rolling mill to improve the heating efficiency. The present invention relates to a hot rolling method that can be utilized to its maximum potential.
（＃央の縛術）
ホットストリップは、通常スラブ加熱炉にてスラブを１
２００℃付近の高温度に加熱昇温し、抽出したのち粗圧
延−仕上げ圧延を経てコイラーで捲取る工程により製造
される。しかして、加熱炉抽出時にはほぼ均一な温度分
布を有しているスラブも、圧延の進行に伴って高圧水デ
スケーリング、ロール冷却水、自然放冷等によって特に
中方向端部の温度降下が大きくなり、材質不均一を招い
ている。(#Central Binjutsu) Hot stripping is usually done by heating a slab in a slab heating furnace.
It is manufactured by heating to a high temperature around 200°C, extracting it, and then rolling it up with a coiler through rough rolling and finishing rolling. However, even when a slab has a nearly uniform temperature distribution when it is extracted from a heating furnace, as rolling progresses, the temperature drops particularly at the middle end due to high-pressure water descaling, roll cooling water, natural cooling, etc. This results in non-uniformity of the material.
このため、特開昭５７−８５６０１号公報にある如くオ
ンラインで温度降下分を加熱補償する技術の提案がなさ
れている。該加熱に際しては誘導加熱による方法が多く
提案され、加熱効率を＾めるためにはパーの厚みの薄い
場所で且つ加熱インダクターと圧延材のギャップを極力
小さくすることが重要なポイントとなる。For this reason, a technique has been proposed for online heating compensation for the temperature drop, as disclosed in Japanese Patent Laid-Open No. 57-85601. Many induction heating methods have been proposed for this heating, and in order to increase heating efficiency, it is important to minimize the gap between the heating inductor and the rolled material in areas where the thickness of the par is thin.
これに対して、従来の熱間仕上圧延スタンド間には第４
図に示すようにルーパーロール２ｏを設置し、そのアー
ムを利用して張力を一定とする制御が行なわれており、
圧延機スタンド間の圧延材通板レベルはルーパーアーム
の角度によって大きく変動する。In contrast, in conventional hot finishing rolling stands, there is a fourth
As shown in the figure, a looper roll 2o is installed and its arm is used to control the tension to be constant.
The threading level of rolled material between rolling mill stands varies greatly depending on the angle of the looper arm.
一方、特公昭５９−５３６４号公報に見られる様に、ル
ーパーロールを使用しないでミルモータのトルクより逆
算でスタンド間張力を演算し、基準張力になる様速度制
御を行うルーパーレス張力制御技術があるが、張力を間
接的に演算検出する方式であるため各検出精度が張力制
御精度に大きく影響を与え、現状では比較的断面積の大
終い圧延材を除き、過大な張力（ユニー／ ）テンシヨ
ン０．９〜１ 、７ ｋｇ／ ａｍ２）を掛けて圧延
せざるをえず、中制御精度への悪影響を及ぼすほか、ル
ープ高さの変動（±３０〜１５０ｍｍ）等があり、通板
レベルの安定が十分なものとは云いがたい。On the other hand, as seen in Japanese Patent Publication No. 59-5364, there is a looper-less tension control technology that calculates the inter-stand tension by back calculation from the torque of the mill motor without using a looper roll, and controls the speed to reach the standard tension. However, since it is a method that calculates and detects tension indirectly, each detection accuracy greatly affects tension control accuracy, and currently, except for rolled materials with relatively large cross-sectional areas, excessive tension (unity / ) tension 0.9 to 1,7 kg/am2), which has a negative impact on intermediate control accuracy, and causes fluctuations in loop height (±30 to 150 mm), resulting in problems with the threading level. It is hard to say that stability is sufficient.
（発明が解決しようとする問題点）
このため、仕上圧ｉａスタンド間に誘導加熱装置を配置
して圧延材温度低下を補償するには、圧延材通板レベル
の不安定を解消する必要がある。(Problem to be solved by the invention) Therefore, in order to compensate for the temperature drop in the rolled material by arranging an induction heating device between the finishing pressure stands, it is necessary to eliminate the instability in the threading level of the rolled material. .
（問題点を解決するための手段）
本発明はこのような問題点を解決するためなされたもの
であり、その要旨とするところは、ルーパーレス張力制
御を行う圧延機スタンド間に上下動可能な張力検出ロー
ラを２本設置するとともに、該検出ローラ間に検出ロー
ラの上下動に同期して上下動可能な誘導加熱装置を配置
し、前記検出ローラ間において圧延材を水平に保持し、
誘導加熱装置の加熱インダクターとのギャップを一定に
保持しつつ圧延することを特徴とする熱間圧延方法であ
る。(Means for Solving the Problems) The present invention has been made to solve these problems, and its gist is to provide a vertically movable system between rolling mill stands that performs looperless tension control. Two tension detection rollers are installed, and an induction heating device that can move up and down in synchronization with the up and down movement of the detection rollers is arranged between the detection rollers, and the rolled material is held horizontally between the detection rollers,
This is a hot rolling method characterized by rolling while maintaining a constant gap with a heating inductor of an induction heating device.
（作用）
以上の如き構成において、スタンド間に配置した２本の
張力検出ローラによってその間における圧延材は水平レ
ベルを保つことができるとともに、該検出ローラに設置
されたロードセル又は歪デーノによりスタンド間張力を
実測し、該実測により得られた張力をもとに圧延ロール
回転数制御を介して高精度の張力制御を行うことによっ
て通板レベル変動の極めて少ない圧延を可能とする。(Function) In the above configuration, the two tension detection rollers arranged between the stands can maintain the horizontal level of the rolled material between them, and the tension between the stands can be maintained by the load cell or strain sensor installed on the detection rollers. By actually measuring the tension and controlling the tension with high precision through controlling the number of rotations of the rolling rolls based on the tension obtained by the measurement, rolling with extremely small fluctuations in the threading level is possible.
一方、該張力検出ローラ闇に配置して圧延材を加熱する
誘導加熱装置を前記検出四−ラの上下動に同期して上下
動させる構成としであるので、圧延材と加熱インダクタ
ーとの設定ギャップを常に一定に保持でき、良好な加熱
効率を維持させることが可能となる。On the other hand, since the induction heating device, which is placed in the darkness of the tension detection roller and heats the rolled material, is moved up and down in synchronization with the up and down movement of the detection roller, the set gap between the rolled material and the heating inductor is can be kept constant at all times, making it possible to maintain good heating efficiency.
（実施例）
次に、本発明法を実施するに好適な装置例を挙げて説明
する。すなわち、図面第１図〜第３図は本発明法を実施
する装置の一例を示す説明図で、図中１ａは仕上圧延機
のＦｌ ロール、２ａはＦ２０−ル、３．４はＦｌ、Ｆ
２スタンド間に配置した張力検出ローラで、５．６は夫
々張力検出ローラに設けた張力検出用型デーノ、７．８
は夫々張力検出ロー２３．４を上下動させる流体圧シリ
ンダで、同期シリンダ１３に接続されている。(Example) Next, an example of an apparatus suitable for carrying out the method of the present invention will be described. That is, FIGS. 1 to 3 are explanatory diagrams showing an example of an apparatus for implementing the method of the present invention, in which 1a is the Fl roll of a finishing mill, 2a is the F20-roll, and 3.4 is the Fl, F roll.
5.6 is a tension detection roller placed between two stands, and 7.8 is a tension detection type deno provided on each tension detection roller.
are fluid pressure cylinders that move the tension detection rows 23.4 up and down, respectively, and are connected to the synchronous cylinder 13.
９．１０は張力検出ローラ３．４ｉ１１において圧延材
Ｓの上下面に対向し、夫々流体圧シリンダ１１．１２に
連結され、上下動自在とされた誘導加熱装置である。そ
して前記流体圧シリンダ１１．１２は張力検出ロー２３
．４の流体圧シリンダ７、Ｑシ襄ツＵｔゆ「ツせ目Ｓ／
１１−ノａ’ｌり身ゆ）Ｕ±ｂ訳シ詰Ｅ呵曾官シリング
１３の機作は該シリンダ１３（こ接続された昇降電磁弁
１４の操作によってなされる。したがって、張力検出ロ
ー２３．４及び誘導加熱装置９．１０は、同期シリンダ
１３の作動によって同期して、上昇及び下降ができる構
成となっている。Reference numeral 9.10 denotes an induction heating device that faces the upper and lower surfaces of the rolled material S in the tension detection roller 3.4i11, is connected to a fluid pressure cylinder 11.12, and is movable up and down. The fluid pressure cylinder 11.12 is connected to the tension detection row 23.
．． 4, fluid pressure cylinder 7,
The mechanism of the cylinder 13 is performed by operating the lifting solenoid valve 14 connected to the cylinder 13. Therefore, the tension detection row 23 .4 and the induction heating device 9.10 are configured to be able to rise and fall in synchronization with the operation of the synchronous cylinder 13.
尚、第２図中には第１図に示した同期シリンダ１３と昇
降電磁弁１４及び各シリンダ７．８．１１．１２への配
管の図示を省略しである。In addition, in FIG. 2, illustrations of the synchronous cylinder 13, the lifting solenoid valve 14, and the piping to each cylinder 7, 8, 11, and 12 shown in FIG. 1 are omitted.
このような設備において、第１図は通板開始の状態を示
してあり、張力検出ローラ３．４は圧延ロールｌａ、２
ａのパスラインと同一レベルに位置設定され、かつ誘導
加熱装置９．１０もパスラインに対し一定の間隔をもっ
て設定される。したがって誘導加熱装置９．１０のイン
ダクターと圧延材とのギャップは未だ張力制御のない段
階なので、レベル変動による圧延材とインダクターとの
接触のない最小ギャップに設定される。In such equipment, FIG. 1 shows the state where sheet threading has started, and the tension detection roller 3.4 is connected to the rolling rolls la, 2.
The induction heating device 9.10 is set at the same level as the pass line of a, and the induction heating device 9.10 is also set at a constant distance from the pass line. Therefore, since the gap between the inductor and the rolled material of the induction heating device 9.10 is still at a stage where tension control is not required, it is set to the minimum gap that will not cause contact between the rolled material and the inductor due to level fluctuations.
このような状態で圧延材Ｓの先端がＦ２０−ル２ａに噛
込後、タイマー設定により昇降電磁弁１４を作動し、同
期シリンダ１３を起動し、張力検出ローラ３．４をこの
ローラ間において圧延材Ｓを水平状態に保持しつつ一定
量上昇させ、一定角度の保持により圧延材張力の検出を
行なう、尚、前記張力検出ローラ３．４の上昇に同期し
て誘導加熱！！置９．１０も同期シリンダ１３によって
圧延材Ｓとの間隔をにｔに一定に保ちつつ上昇させる。After the tip of the rolled material S is caught in the F20-rule 2a in this state, the lifting solenoid valve 14 is activated by the timer setting, the synchronous cylinder 13 is started, and the tension detection roller 3.4 is rolled between these rollers. The tension of the rolled material is detected by raising the material S by a certain amount while keeping it in a horizontal state and holding it at a certain angle.In addition, induction heating is performed in synchronization with the rise of the tension detection roller 3.4. ! 9.10 is also raised by the synchronous cylinder 13 while keeping the distance from the rolled material S constant at t.
上昇後は張力検出による張力制御を行なうためレベル変
動は小さく、一段とギャップを小さく設定して加熱効率
を高める
第２図は張力検出ローラ３．４及び誘導加熱装置９．１
０を上昇させた状態図であり、圧延中は一定の張力を保
って操業され、誘導加熱装置９．１０と圧延材Ｓの間隔
は一定に保たれ、圧延材Ｓの尾端が前段スタンド１を抜
ける直前に張力検出ローラ３．４及び誘導加熱装置９．
１０を同期シリンダ１３によって圧延ロールのパスライ
ン位置まで下降させ、次の圧延材頭部の通板性を確保す
る。After rising, the tension is controlled by tension detection, so the level fluctuation is small, and the gap is set even smaller to increase heating efficiency. Figure 2 shows the tension detection roller 3.4 and induction heating device 9.1.
0 is raised, and the operation is performed while maintaining a constant tension during rolling, the distance between the induction heating device 9.10 and the rolled material S is kept constant, and the tail end of the rolled material S is at the front stage stand 1. Just before passing through the tension detection roller 3.4 and the induction heating device 9.
10 is lowered by the synchronous cylinder 13 to the pass line position of the rolling rolls to ensure the sheet passing performance of the head of the next rolled material.
しかして、本発明における張力制御の一例を第３図に示
す例により説明する。An example of tension control according to the present invention will be explained with reference to an example shown in FIG.
同図において、張力検出ローラ３．４が圧延材Ｓに接触
すると同時に歪デージ５．６が夫々荷重を検出し、その
値を加算器１５へ入力する。加算器１５では２つの荷重
値を加算し、全荷重を求めてその値を張力演算装置１６
に出力する。In the figure, at the same time as the tension detection roller 3.4 comes into contact with the rolled material S, the strain gauges 5.6 detect the respective loads and input the values to the adder 15. The adder 15 adds the two load values to obtain the total load and sends that value to the tension calculation device 16.
Output to.
張力演算装置１６では全荷重値をもとに圧延材Ｓの張力
を演算によって求め、得られた張力の値を出力するよう
になって、いる。この張力の値と目標張力上〇の偏差を
求め、制御補償装置１７に入力する。該制御補償装置１
７で速度修正値Δ智を求め、得られた速度修正値Δ切を
出力する。次いでモータ指令植替０との合計を求める。The tension calculation device 16 calculates the tension of the rolled material S based on the total load value, and outputs the obtained tension value. The deviation between this tension value and the target tension is determined and input to the control compensation device 17. The control compensation device 1
In step 7, the speed correction value Δ is determined, and the obtained speed correction value Δ is output. Next, the sum with motor command replanting 0 is calculated.
合計によって得られた値が最適な速度指令であり、これ
を速度制御装置１８に入力し、該速度制御装置１８は入
力された最適な速度指令値によってミルモータ１９の速
度を変化させ、張力を一定に制御し、圧延材Ｓ通板レベ
ルを一定に保つ。The value obtained by the sum is the optimal speed command, which is input to the speed control device 18, and the speed control device 18 changes the speed of the mill motor 19 according to the input optimal speed command value to keep the tension constant. control to keep the threading level of the rolled material S constant.
（発明の効果）
以上詳細に説明した如く、本発明は上下動可能な２本の
検出ローフと、そのローラによる実測張力値をもとにル
ーパーレス制御を行う方式と、その検出ローラに同調し
て上下動作する誘導加熱装置とによって、
■圧延材の通板性が確保できること、
■圧延材通板レベルが極めて安定（±１５５１ｍ以内）
し、誘導加熱インダクターとのギャップを極小にできる
ため極めて高い加熱効率が得られること、
■ユニットテンションを従来上り低く設定（０、４〜０
、７ ｋｇ／ ｎｕｎ２）してコントロールすること
ができるため、圧延材の寸法精度に与えるこれまでの影
響は全くなく、高品質のホットコイルの生産が可能とな
ること
等の産業上有効な効果が得られる。(Effects of the Invention) As explained above in detail, the present invention includes two detecting loaves that can move up and down, a method of performing looperless control based on the measured tension value by the rollers, and a system that performs looperless control based on the tension value actually measured by the rollers, and a method that is synchronized with the detecting rollers. By means of an induction heating device that moves up and down at the same time, ■ the ability to pass the rolled material is ensured, and ■ the level of the rolled material passing is extremely stable (within ±1551m).
The gap between the induction heating inductor and the induction heating inductor can be minimized, resulting in extremely high heating efficiency.
, 7 kg/nun2), there is no effect on the dimensional accuracy of rolled materials, and there are industrially effective effects such as making it possible to produce high-quality hot coils. can get.
第１図〜第３図は本発明実施例を示す説明図で、第１図
は張力検出ローラと誘導加熱装置の配置状況及び上下動
同期制御系統を示す説明図、第２図は張力検出ローラ及
び誘導加熱装置を上昇させ通板中の状態を示す説明図、
第３図は張力制御系統の一例を示す説明図、第４図は従
来のルーパ一方式張力制御を示す説明図である。
１・・・前段スタンド、１ａ・・・Ｆ、ロール、２・・
・後段スタンド、２ａ・・・Ｆ２０−ル、３．４・・・
張力検出ローフ、５．６・・・歪ゲージ、７．８・・・
流体圧シリンダ、９．１０・・・誘導加熱装置、１１．
１２・・・流体圧シリンダ、１３・・・同期シリンダ、
１４・・・昇降電磁弁、１５・・・加算器、１６・・・
張力演算装置、１７・・・制御補償装置、１８・・・速
度制御装置、１９・・・ミルモータ、２０・・・ルーパ
ーロール、Ｓ・・・圧延材。Figures 1 to 3 are explanatory diagrams showing an embodiment of the present invention. Figure 1 is an explanatory diagram showing the arrangement of the tension detection roller and induction heating device and the vertical movement synchronization control system, and Figure 2 is an explanatory diagram showing the tension detection roller and the induction heating device. FIG. 3 is an explanatory diagram showing an example of a tension control system, and FIG. 4 is an explanatory diagram showing a conventional looper one-type tension control. 1...front stage stand, 1a...F, roll, 2...
・Rear stage stand, 2a...F20-ru, 3.4...
Tension detection loaf, 5.6...Strain gauge, 7.8...
Fluid pressure cylinder, 9.10... induction heating device, 11.
12... Fluid pressure cylinder, 13... Synchronous cylinder,
14... Lifting solenoid valve, 15... Adder, 16...
Tension calculation device, 17... Control compensation device, 18... Speed control device, 19... Mill motor, 20... Looper roll, S... Rolled material.
Claims (1)
上下動可能な張力検出ローラを２本設置するとともに、
該検出ローラ間に検出ローラの上下動に同期して上下動
可能な誘導加熱装置を配置し、前記検出ローラ間におい
て圧延材を水平に保持し、誘導加熱装置の加熱インダク
ターとのギャップを一定に保持しつつ圧延することを特
徴とする熱間圧延方法。(1) Two tension detection rollers that can move up and down are installed between the rolling mill stands that perform looperless tension control, and
An induction heating device that can move up and down in synchronization with the up and down movement of the detection roller is arranged between the detection rollers, the rolled material is held horizontally between the detection rollers, and the gap between the induction heating device and the heating inductor is kept constant. A hot rolling method characterized by rolling while holding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60147760A JPS629704A (en) | 1985-07-05 | 1985-07-05 | Hot rolling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60147760A JPS629704A (en) | 1985-07-05 | 1985-07-05 | Hot rolling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS629704A true JPS629704A (en) | 1987-01-17 |
| JPH038842B2 JPH038842B2 (en) | 1991-02-07 |
Family
ID=15437540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60147760A Granted JPS629704A (en) | 1985-07-05 | 1985-07-05 | Hot rolling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS629704A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0666122A1 (en) * | 1994-01-27 | 1995-08-09 | Sms Schloemann-Siemag Aktiengesellschaft | Method and installation for manufacturing hot-rolled steel strip from a continuously cast material |
| EP0721813A1 (en) * | 1995-01-16 | 1996-07-17 | MANNESMANN Aktiengesellschaft | Device for guiding hot-rolled strip through an inductor |
| JP2014050875A (en) * | 2012-09-10 | 2014-03-20 | Nippon Steel & Sumitomo Metal | Cooling device, manufacturing apparatus and manufacturing method of hot rolled steel sheet |
| EP3269464A4 (en) * | 2015-03-09 | 2018-10-17 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Rolling facility |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5522422A (en) * | 1978-08-03 | 1980-02-18 | Nippon Steel Corp | Steel plate hot rolling method and device |
| JPS5966128U (en) * | 1982-10-25 | 1984-05-02 | 住友金属工業株式会社 | 2 roll type tension measuring device |
-
1985
- 1985-07-05 JP JP60147760A patent/JPS629704A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5522422A (en) * | 1978-08-03 | 1980-02-18 | Nippon Steel Corp | Steel plate hot rolling method and device |
| JPS5966128U (en) * | 1982-10-25 | 1984-05-02 | 住友金属工業株式会社 | 2 roll type tension measuring device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0666122A1 (en) * | 1994-01-27 | 1995-08-09 | Sms Schloemann-Siemag Aktiengesellschaft | Method and installation for manufacturing hot-rolled steel strip from a continuously cast material |
| US5611232A (en) * | 1994-01-27 | 1997-03-18 | Sms Schloemann-Siemag Aktiengesellschaft | Method and arrangement for manufacturing hot rolled steel strip from continuously cast input stock |
| EP0721813A1 (en) * | 1995-01-16 | 1996-07-17 | MANNESMANN Aktiengesellschaft | Device for guiding hot-rolled strip through an inductor |
| US5910185A (en) * | 1995-01-16 | 1999-06-08 | Mannesmann Aktiengesellschaft | Device for the guidance of hot-rolled strip through an inductor |
| JP2014050875A (en) * | 2012-09-10 | 2014-03-20 | Nippon Steel & Sumitomo Metal | Cooling device, manufacturing apparatus and manufacturing method of hot rolled steel sheet |
| EP3269464A4 (en) * | 2015-03-09 | 2018-10-17 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Rolling facility |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH038842B2 (en) | 1991-02-07 |
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