JP2781860B2 - How to cut steel bars - Google Patents
How to cut steel barsInfo
- Publication number
- JP2781860B2 JP2781860B2 JP8266092A JP8266092A JP2781860B2 JP 2781860 B2 JP2781860 B2 JP 2781860B2 JP 8266092 A JP8266092 A JP 8266092A JP 8266092 A JP8266092 A JP 8266092A JP 2781860 B2 JP2781860 B2 JP 2781860B2
- Authority
- JP
- Japan
- Prior art keywords
- length
- billet
- weight
- cutting
- shear
- 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
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Description
【０００１】[0001]
【産業上の利用分野】本発明は棒鋼等の長尺鋼材を所定
製品長さに切断する方法、特にビレット連続鋳造機と棒
鋼圧延機が連続して配置された直送圧延設備でビレット
シャー，圧延材分割シャー，冷却ヤードにおける冷間シ
ャーによって各々切断され、所定長さの最終棒鋼製品を
得る方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of cutting a long steel material such as a steel bar into a predetermined product length, and more particularly to a billet shearing and rolling method in a direct-feed rolling facility in which a continuous billet casting machine and a steel bar rolling machine are continuously arranged. The present invention relates to a method of obtaining a final steel bar product having a predetermined length by being cut by a material dividing shear and a cold shear in a cooling yard.
【０００２】[0002]
【従来の技術】この種の圧延設備における棒鋼の製造に
おいては、圧延機の出側で後続設備の冷却床の長さスペ
ースを考慮して圧延材を分割切断し、前記冷却床に複数
本横並びに載置した後、各分割材を冷間シャーで最終の
製品長さに切断している。分割材の切断長さを決めるに
はまず圧延機からの圧延材の送出速度を検出する必要が
ある。一般には図１に示すように圧延機の最終スタンド
１にロール回転数に比例したパルスを出すパルス発信器
２が設置され、決められた分割長さに相当するパルス数
を求める。圧延機出側の分割シャー前の熱鋼検出器３で
圧延材４の先端が検出されると、前記パルス発信器２の
パルスの積算を開始し、第１回目の分割は熱鋼検出器３
と分割シャー５の間の距離ｌ1 を最終スタンドのパルス
発信器のパルス数に換算した分だけ考慮して行われる。
第２回目以降は、圧延ライン上の切断長ｌ2 に相当する
パルス数で分割を行う。切断の回数は予め設定した回数
で切断を行うか、あるいは最終スタンド前に設けられた
熱鋼検出器３が圧延材４の尾端を検出するまで切断を続
ける。この場合切断長ＬD は次のように決められる。 ＬD ＝ｎ×ｌ Ｌmin ＜ＬD ＜Ｌmax Ｌmin ＜ＬT ここでｌ；最終定尺製品長さ、 ｎ；整数、 Ｌmin ；冷却床取込装置のサイクルタイムから決まる最
小分割長さ、 Ｌmax ；冷却床の長さから決まる最大分割長さ、 ＬT ；最終の分割長さ、 この切断長ＬD の決め方については従来から種々の方法
が提案されている。2. Description of the Related Art In the production of steel bars in this type of rolling equipment, a rolled material is divided and cut at the exit side of a rolling mill in consideration of the length of a cooling floor of a succeeding equipment, and a plurality of rolled materials are arranged side by side on the cooling floor. After that, each divided material is cut to the final product length by a cold shear. In order to determine the cut length of the divided material, it is necessary to first detect the speed at which the rolled material is sent from the rolling mill. In general, as shown in FIG. 1, a pulse transmitter 2 for generating a pulse proportional to the number of rotations of a roll is installed in a final stand 1 of a rolling mill, and a pulse number corresponding to a determined division length is obtained. When the leading end of the rolled material 4 is detected by the hot steel detector 3 before the split shear on the exit side of the rolling mill, integration of the pulses of the pulse transmitter 2 is started, and the first split is performed by the hot steel detector 3
The distance l 1 between the first and second split shears 5 is converted into the number of pulses of the pulse transmitter of the last stand.
After the second time, division is performed with the number of pulses corresponding to the cutting length l 2 on the rolling line. The cutting is performed a preset number of times, or the cutting is continued until the hot steel detector 3 provided in front of the final stand detects the tail end of the rolled material 4. In this case, the cutting length L D is determined as follows. L D = n × l L min <L D <L max L min <L T where l; final constant length product length, n; integer, L min; minimum division length determined from the cycle time of the cooling bed capture device It is, L max; maximum division length determined by the length of the cooling bed, L T; final division length, various methods conventionally about how to determine the cutting length L D has been proposed.
【０００３】例えば特開昭５５−１３７８２５号による
方法は、分割材の長さを最終定尺製品長さで割った余剰
部分をいずれかの分割圧延材に集めて定尺製品長さより
短かい定短尺製品の切断位置に位置させて切断し、定尺
製品に付随して定短尺製品を得ようとするものである。
特開昭５５−２４８１５号公報による棒鋼類の分割切断
方法においても分割材の長さを、クロップロスを減少さ
せ作業の能率化、作業の安全を図って最適切断しようと
している。また特開昭５８−１７１２１５号公報に記載
のものは、長尺材を長さ基準で分割していたのを重量基
準で切断するようにしたもので、長尺材の切断位置の長
さ方向前後に設けた２台の重量測定器で重量を計測し、
この計測結果に基いて重量等分位置を求め、この位置が
切断位置となるように長尺材を長手方向に移動させて切
断している。For example, in the method disclosed in Japanese Patent Application Laid-Open No. 55-137825, a surplus portion obtained by dividing the length of a divided material by the final fixed product length is collected into one of the divided rolled materials, and a fixed length shorter than the fixed product length is collected. It is intended to cut the short-length product at the cutting position and obtain a fixed-length product accompanying the fixed-length product.
Also in the method for cutting bars and the like according to Japanese Patent Application Laid-Open No. 55-24815, the length of the divided material is intended to be optimally cut in order to reduce crop loss, increase work efficiency, and work safety. Japanese Unexamined Patent Publication (Kokai) No. 58-171215 discloses a method in which a long material is divided on the basis of length, but is cut on a weight basis. Measure the weight with two weighing devices provided in front and back,
Based on the measurement result, a position equivalent to the weight is obtained, and the long material is moved in the longitudinal direction so as to be cut so that the position becomes the cutting position.
【０００４】[0004]
【発明が解決しようとする課題】上述した特開昭５５−
１３７８２５号公報の棒鋼切断方法は、定短尺製品長さ
に満たない乱尺材が発生するのを防止でき、通常のオン
ラインの冷間シャーで定短尺製品が得られる点では歩留
り，作業能率は向上するが、定短尺製品となる分割圧延
材の余剰部分の長さが定短尺製品長さに一致するとは限
らず、またこの余剰材の先端を切断する必要が生じる。
その分冷間シャーの動作回数が増え、冷間シャーでの作
業能率が低下する。また特開昭５８−１７１２１５号の
長尺材の重量分割方法は、分割後の重量が或る一定の重
量となるようにその都度重量を測って切断位置を変えて
いるが、分割材の後工程での処理の最適化を図るもので
はない。さらに上述した従来方法はいずれも圧延前のビ
レットの重量が予め決められており、その条件の下で分
割位置を変えるなどして作業能率や歩留りの向上を図ろ
うとするものであり、乱尺材の発生や作業能率の点で未
だ充分とはいえない。SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No.
The method of cutting steel bars described in Japanese Patent No. 137825 can prevent the occurrence of irregularly-sized material less than the length of a fixed-short product, and improve the yield and work efficiency in that a fixed-short product can be obtained with a normal online cold shear. However, the length of the surplus portion of the divided rolled material to be a fixed-short product does not always match the fixed-short product length, and the tip of the surplus material needs to be cut.
Accordingly, the number of operations of the cold shear increases, and the work efficiency in the cold shear decreases. Japanese Patent Application Laid-Open No. 58-171215 discloses a method of dividing the weight of a long material by changing the cutting position by measuring the weight each time so that the weight after division becomes a certain weight. It is not intended to optimize the processing in the process. Furthermore, in all of the above-mentioned conventional methods, the weight of the billet before rolling is determined in advance, and it is intended to improve the work efficiency and the yield by changing the dividing position under the conditions, and the like. However, it is not sufficient in terms of generation of work and work efficiency.
【０００５】本発明は連続鋳造機で得られるビレットの
重量を棒鋼圧延機に入る前に最終製品の径，長さに対応
して制御し、作業能率を上げて無駄のない最適切断を達
成することにある。According to the present invention, the weight of the billet obtained by the continuous casting machine is controlled in accordance with the diameter and length of the final product before entering the bar mill, so that the work efficiency is increased and the optimum cutting without waste is achieved. It is in.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、連続鋳
造機から鋳造されるビレットを棒鋼圧延機で棒鋼に圧延
した後所要長さに分割し、さらに最終製品長さに切断す
る棒鋼の切断方法において、前記棒鋼圧延機出側の圧延
材の分割長さを、最終製品長さの整数倍でかつ冷却床の
長さから決まる最大分割長さとし、この長さの圧延材の
重量の整数倍の重量に等しくなるように前記連続鋳造機
で得られるビレットを切断する棒鋼の切断方法が提供さ
れる。According to the present invention, a billet cast from a continuous casting machine is rolled into a bar by a bar rolling mill, divided into required lengths, and further cut into final product lengths. In the cutting method, the division length of the rolled material on the exit side of the bar rolling mill is an integral multiple of the length of the final product and the maximum division length determined by the length of the cooling bed, and an integer of the weight of the rolled material having this length. There is provided a method for cutting a steel bar for cutting a billet obtained by the continuous casting machine so as to be equal to double the weight.
【０００７】[0007]
【実施例】次に、本発明を実施例について図面を参照し
て説明する。図２は本発明の実施例によるビレットから
最終製品に至る棒鋼の流れを示した全体概略図である。
まずビレット連続鋳造機６から取り出されるビレット７
をメジャリングロールによる長さ検出機８で検出してビ
レットシャー（油圧シャー）９で切断し、後述するビレ
ット重量となっているか秤量機１０で秤量して確認す
る。秤量されたビレットの重量が所定のビレット重量に
一致していないときは偏差に応じてビレットシャー９で
の切断位置を変更する。秤量の終了したビレットは順次
棒鋼圧延機１２へビレット７を給送して所定横断面形状
の棒鋼に圧延し、後段の圧延ライン上の分割シャー１３
で所定長さに分割切断して冷却床１４上に横置する。冷
却床１４上の分割材１５は冷却床出側にある冷間シャー
１６で等間隔に定尺製品長さに切断して最終製品１７が
得られる。なお、棒鋼圧延機にトラブルが発生し、連続
鋳造機６からビレットの給送ができないとき、ビレット
を貯蔵するためのビレットヤード（図示省略）を設ける
場合がある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 2 is an overall schematic view showing a flow of a steel bar from a billet to a final product according to an embodiment of the present invention.
First, the billet 7 taken out from the continuous billet casting machine 6
Is detected by a length detector 8 using a measuring roll, cut by a billet shear (hydraulic shear) 9, and weighed by a weighing machine 10 to check whether or not the billet weight is described later. When the weight of the weighed billet does not match the predetermined billet weight, the cutting position at the billet shear 9 is changed according to the deviation. The billet whose weighing is completed is sequentially fed to the bar rolling mill 12 to be rolled into a bar having a predetermined cross-sectional shape, and the divided shear 13 on the subsequent rolling line is formed.
And cut laterally on the cooling floor 14. The divided material 15 on the cooling floor 14 is cut into equal length product lengths by a cold shear 16 on the cooling floor exit side to obtain a final product 17. When a problem occurs in the bar rolling mill and the billet cannot be fed from the continuous casting machine 6, a billet yard (not shown) for storing the billet may be provided.
【０００８】本発明においては、製造しようとする棒鋼
の圧延サイズが決まると、この圧延サイズの下で単位長
さ当りの棒鋼の重量がわかる。一方、圧延機後段の分割
シャー１３で切断される分割材長さを、最終製品長さの
整数倍でかつ冷却床１４の長さから規制される最大分割
長さに定め、さらに冷却床上に載置し得る分割材本数を
設定し、この分割材長さおよび本数と棒鋼の単位長さ重
量から圧延前のビレットに換算しての全体重量を求め
る。この換算全体重量に相当するビレット長さを求め
る。ビレット切断長制御システムを用いてこのビレット
長さに等しくなるように連続鋳造機出側のビレットシャ
ーでビレットを切断する。切断されたビレットは目的
（目標）とする重量となっているかを秤量機で秤量して
確め、偏差が生じた場合、ビレットシャーでの切断位置
を変え、目的の重量となるようにフィードバック制御を
行う。なお、上述の例では連続床上の分割材の本数は任
意としたが、これを基に計算されるビレット重量および
長さが極端なものとならないようになるべく連続鋳造機
の標準ビレット長さに近くなるように冷却床上の分割材
本数を定める。In the present invention, when the rolled size of the bar to be manufactured is determined, the weight of the bar per unit length can be determined under the rolled size. On the other hand, the length of the divided material cut by the dividing shear 13 at the latter stage of the rolling mill is set to a maximum division length that is an integral multiple of the length of the final product and is regulated by the length of the cooling floor 14, and is further placed on the cooling floor. The number of divided members that can be placed is set, and the total weight in terms of the billet before rolling is determined from the length and number of the divided members and the unit length weight of the steel bar. The billet length corresponding to this converted total weight is determined. Using a billet cutting length control system, the billet is cut by a billet shear on the exit side of the continuous casting machine so as to be equal to the billet length. Weigh the cut billet to the target (target) weight with a weighing machine to confirm. If a deviation occurs, change the cutting position in the billet shear and feedback control so that the target weight is achieved. I do. In the above example, the number of divided members on the continuous floor was arbitrary, but the billet weight and length calculated based on this were close to the standard billet length of the continuous casting machine so that the billet weight and length would not be extreme. Determine the number of divided materials on the cooling floor so that
【０００９】上述の方法でビレット切断長さを決め、上
述の分割長さで圧延材を分割切断すれば、各分割材に余
剰部分を生ずることなく定尺製品が得られる。ここで実
際の連続圧延においては、圧延中の圧延材の全長をモニ
タリングし、このモニタリングされた全長と当初の計算
で算出した全長との間にある範囲を越えて偏差が生じた
場合、連続鋳造機のビレットシャーの切断長制御システ
ムに信号を送り、ビレット重量の増減を行う。なお全長
のモニタリングにおいては、ｌ2 を最終仕上スタンド１
と熱鋼検出器３間の距離（図１参照）、Ｐ1 を最終仕上
スタンド１でビレット圧延中に発生する全パルス数、Ｐ
2 を圧延材が最終仕上スタンド１を出て熱鋼検出器３に
到達するまでに最終スタンドが発生するパルス数とすれ
ば、圧延材の全長Ｌは、Ｌ＝ｌ2 ×Ｐ1 ／Ｐ2 で検出さ
れる。さらに実際にビレット重量を決める場合は、上述
した算出ビレット重量に、（ａ）連続鋳造機のビレット
シャーと圧延機最終スタンド間で失われるスケール分の
重量および（ｂ）圧延ライン上の圧延材分割シヤーで切
断された圧延材先端および後端のクロップ片（冷間シャ
ーで切断する）の重量を加える必要がある。[0009] If the billet cutting length is determined by the above-described method and the rolled material is divided and cut by the above-described division length, a fixed-length product can be obtained without generating an excess portion in each divided material. Here, in the actual continuous rolling, the total length of the rolled material during rolling is monitored, and if a deviation occurs beyond a certain range between the monitored total length and the total length calculated in the initial calculation, continuous casting is performed. A signal is sent to the cutting length control system of the billet shear of the machine to increase or decrease the billet weight. In monitoring the full length, l 2 is used as the final finishing stand 1
(See Figure 1) the distance between the heat steel detector 3, the total number of pulses occurring during billet rolling at a final finishing stand 1 P 1, P
If 2 is the number of pulses generated by the final stand before the rolled material exits the final finishing stand 1 and reaches the hot steel detector 3, the total length L of the rolled material is L = l 2 × P 1 / P 2 Is detected by Further, when actually determining the billet weight, the calculated billet weight described above includes (a) the weight of the scale lost between the billet shear of the continuous casting machine and the final stand of the rolling mill, and (b) the rolled material division on the rolling line. It is necessary to add the weight of the front and rear crop pieces (cut with a cold shear) of the rolled material cut by the shear.
【００１０】次に、具体的な例を挙げて本発明の方法を
さらに詳しく説明する。図３に示すように、６ｍの最終
定尺製品を得る場合、冷却床１４の長さが１０２ｍとす
ると、圧延ラインの圧延材分割シャーで分割される分割
材の長さは、６ｍの整数倍でかつ冷却床の長さにできる
だけ近い９０ｍとする。前述の如くこの冷却床に収容さ
れる分割材１５の総数を決めてこれからビレット重量を
算出してもよいが、通常は例えば１５０ｍｍ角、１トン
の標準単位でビレットを切断するようにビレットシャー
のホームポジションが定められており、この位置を基準
にして切断長制御システムにより該シャーの位置調整を
行う。したがってできるだけビレット１トンに近くなる
範囲で９０ｍの分割材１５を必要本数得る方法をとる。
具体的には、所定圧延サイズをＤ１３とすると、Ｄ１３
の単位長さ重量は０．９９５Ｋｇ／ｍとなる。このと
き、１トンビレットの圧延後の全長は１０００／０．９
９５＝１００５ｍと算出される。このビレットから９０
ｍの分割材は１００５／９０＝１１．１６７本得られ
る。これから冷却床１４上の分割材本数は１１本とし、
０．１６７本分の分割材を余長分１８とする。この余長
分の重量はビレット１１本に対し９０×０．１６７×
０．９９５＝１５Ｋｇ（概算）であるので、１トンビレ
ットから１５Ｋｇを減じて９８５Ｋｇの算出ビレット重
量を得る。これからビレット長さを算出するとともに実
際のビレット長をメジャリングロールで検出し、ビレッ
トシャーを位置調整してこの長さでビレットを切断す
る。切断後のビレットは秤量機にて測定し、公知のフィ
ードバック制御でビレットシャーを位置制御する。なお
この場合にも前述した圧延ラインにおけるスケール分の
重量，先後端クロップ片の重量の修正を加えることは勿
論である。Next, the method of the present invention will be described in more detail with reference to specific examples. As shown in FIG. 3, when a final fixed length product of 6 m is obtained, assuming that the length of the cooling floor 14 is 102 m, the length of the divided material divided by the rolled material dividing shear of the rolling line is an integral multiple of 6 m. 90 m as close as possible to the length of the cooling bed. As described above, the billet weight may be calculated by determining the total number of the divided members 15 accommodated in the cooling floor, but usually, for example, a 150 mm square, 1 ton standard unit of the billet shear is used to cut the billet. A home position is determined, and the position of the shear is adjusted by the cutting length control system based on the home position. Therefore, a method of obtaining the required number of 90 m divided members 15 in a range as close as possible to 1 ton of billet is adopted.
Specifically, assuming that the predetermined rolling size is D13, D13
Has a unit length weight of 0.995 Kg / m. At this time, the total length of the 1-ton billet after rolling was 1000 / 0.9.
95 is calculated as 1005 m. 90 from this billet
1005/90 = 11.167 m-dividers are obtained. From now on, the number of divided materials on the cooling floor 14 will be 11
The divided material for 0.167 pieces is set to 18 for the extra length. The weight of this extra length is 90 x 0.167 x for 11 billets
Since 0.995 = 15 Kg (estimated), 15 Kg is subtracted from 1 ton billet to obtain a calculated billet weight of 985 Kg. From this, the billet length is calculated, the actual billet length is detected by a measuring roll, the position of the billet shear is adjusted, and the billet is cut at this length. The billet after cutting is measured by a weighing machine, and the position of the billet shear is controlled by known feedback control. Also in this case, it is needless to say that the weight of the scale in the rolling line and the weight of the front and rear end crop pieces are corrected.
【００１１】[0011]
【発明の効果】以上説明したように本発明によれば、最
終製品の外径，長さに対応して連続鋳造機のビレット重
量を決め、このビレット重量に相当する長さにビレット
を切断して棒鋼圧延機に供給し、さらに圧延材をすべて
最終製品の長さの整数倍で分割するようにしたので、最
後の製品切断において余剰部分が出ることがなく、歩留
りが向上し、また余剰部分の切断が不要となるので冷間
シャーでの切断サイクルが短縮され作業能率が向上す
る。As described above, according to the present invention, the billet weight of the continuous casting machine is determined according to the outer diameter and length of the final product, and the billet is cut to a length corresponding to the billet weight. And the rolled material is further divided by an integral multiple of the length of the final product.Therefore, there is no surplus part in the final product cutting, and the yield is improved. This eliminates the need for cutting, so the cutting cycle in the cold shear is shortened, and the work efficiency is improved.
【図１】圧延ライン上での熱鋼検出器および分割シャー
を用いた圧延材の長さ検出および切断方法を説明するた
めの概略図である。FIG. 1 is a schematic diagram for explaining a method of detecting a length of a rolled material and a cutting method using a hot steel detector and a split shear on a rolling line.
【図２】本発明による方法を実施する場合の全体設備構
成を示した概略図である。FIG. 2 is a schematic diagram showing the overall equipment configuration when performing the method according to the present invention.
【図３】本発明の実施例による冷却床上の分割材の配置
および最終製品の切断位置を示した平面図である。 ６ 連続鋳造機 ７ ビレット ８ 長さ検出器 ９ ビレットシャー １０ 秤量機 １２ 棒鋼圧延機 １３ 圧延材分割シャー １４ 冷却床 １５ 分割材 １６ 冷間シャー １７ 最終定尺製品FIG. 3 is a plan view showing an arrangement of divided materials on a cooling floor and a cutting position of a final product according to an embodiment of the present invention. Reference Signs List 6 continuous casting machine 7 billet 8 length detector 9 billet shear 10 weighing machine 12 steel bar rolling machine 13 rolled material dividing shear 14 cooling floor 15 divided material 16 cold shear 17 final fixed length product
Claims (1)
棒鋼に圧延した後所要長さに分割し、さらに最終製品長
さに切断する棒鋼の切断方法において、前記棒鋼圧延機
出側の圧延材の分割長さを、最終製品長さの整数倍でか
つ冷却床の長さから決まる最大分割長さとし、この長さ
の圧延材の重量の整数倍の重量に等しくなるように前記
連続鋳造機で得られるビレットを切断することを特徴と
する棒鋼の切断方法。1. A method of cutting a bar from a continuous casting machine, wherein the billet is rolled into a bar by a bar rolling machine, divided into required lengths, and further cut into a final product length. The division length of the material is an integral multiple of the length of the final product and the maximum division length determined by the length of the cooling bed, and the continuous casting machine is designed to be equal to an integral multiple of the weight of the rolled material of this length. A method for cutting a steel bar, comprising cutting a billet obtained in step (a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8266092A JP2781860B2 (en) | 1992-03-04 | 1992-03-04 | How to cut steel bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8266092A JP2781860B2 (en) | 1992-03-04 | 1992-03-04 | How to cut steel bars |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05253737A JPH05253737A (en) | 1993-10-05 |
| JP2781860B2 true JP2781860B2 (en) | 1998-07-30 |
Family
ID=13780596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8266092A Expired - Lifetime JP2781860B2 (en) | 1992-03-04 | 1992-03-04 | How to cut steel bars |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2781860B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19622740A1 (en) * | 1996-06-07 | 1997-12-11 | Schloemann Siemag Ag | Method for operating a roll stand system |
| NL1007731C2 (en) * | 1997-12-08 | 1999-06-09 | Hoogovens Staal Bv | Method and device for manufacturing a ferritically rolled steel strip. |
| CN104308138B (en) * | 2014-11-14 | 2016-06-29 | 北京首钢自动化信息技术有限公司 | A kind of casting terminal point control devices and methods therefor based on many scales, many casting stream |
| CN116921446A (en) * | 2023-09-18 | 2023-10-24 | 陕西钢铁集团有限公司 | Method for full length and fast adjusting steel billet between steel making and rolling based on direct rolling |
-
1992
- 1992-03-04 JP JP8266092A patent/JP2781860B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05253737A (en) | 1993-10-05 |
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