JPH0663636A - Preliminary cooling device for hot rolled steel plate - Google Patents
Preliminary cooling device for hot rolled steel plateInfo
- Publication number
- JPH0663636A JPH0663636A JP4218900A JP21890092A JPH0663636A JP H0663636 A JPH0663636 A JP H0663636A JP 4218900 A JP4218900 A JP 4218900A JP 21890092 A JP21890092 A JP 21890092A JP H0663636 A JPH0663636 A JP H0663636A
- Authority
- JP
- Japan
- Prior art keywords
- width direction
- steel plate
- temperature distribution
- steel sheet
- cooling water
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、熱延鋼板の冷却装置に
かかわり、とくに鋼板幅方向温度分布の均一化を実現す
る装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for hot-rolled steel sheets, and more particularly to a device for realizing uniform temperature distribution in the steel sheet width direction.
【０００２】[0002]
【従来の技術】近年の鋼板製造プロセスに関し、製品の
強度や加工性など品質の向上を目的とした材質制御の研
究が盛んになってきており、これまで数多くの鋼種につ
いて、目的とする材質を得るために必要な合金成分や冷
却条件が明らかにされてきた。これらの鋼種には熱間圧
延の際の仕上げ圧延後の冷却過程において温度履歴を高
い精度で制御することによって始めてその特性が実現で
きるものも多く、製品化のためには鋼板の長手方向およ
び幅方向全体にわたって均一な性能を付与するために、
全体を同一の温度履歴で冷却する必要がある。2. Description of the Related Art In recent years, with regard to steel plate manufacturing processes, research on material control for the purpose of improving quality such as strength and workability of products has been actively conducted. The alloying components and cooling conditions necessary to obtain them have been clarified. Many of these steel grades can achieve their characteristics only by controlling the temperature history with high accuracy in the cooling process after finish rolling during hot rolling. To give uniform performance across all directions,
It is necessary to cool the whole with the same temperature history.
【０００３】熱間仕上げ圧延後の鋼板は、スキッドマー
クや加速圧延などの影響により長手方向に不均一な温度
分布をもっているが、温度測定値をフィードバックして
冷却水のオンオフ制御を行い、冷却ゾーンの長さを逐次
調整することによって従来の巻取り温度の長手方向の不
均一性を改善する技術があり、これは例えば特開昭６０
−８７９１４号公報に開示されている。The steel sheet after hot finish rolling has a non-uniform temperature distribution in the longitudinal direction due to the influence of skid marks and accelerated rolling. However, the temperature measurement value is fed back to control the cooling water on and off, and the cooling zone. There is a conventional technique for improving the non-uniformity of the winding temperature in the longitudinal direction by sequentially adjusting the length of the winding, which is disclosed in, for example, Japanese Patent Laid-Open No.
It is disclosed in Japanese Patent Publication No. -87914.
【０００４】しかしながら鋼板は幅方向にも不均一な温
度分布をもっており、一般にエッジ部分の温度はスラブ
段階から中央部に比べて低くなっている。さらに粗圧延
や仕上げ圧延の工程を経るに際し、デスケーリング水や
クーラント水などのかかり方の不均一やスケール厚分布
の不均一などの原因により、幅方向温度分布の不均一性
は例えば図５に示すようにますます複雑になってくるの
が現状である。However, the steel sheet has a non-uniform temperature distribution in the width direction as well, and generally the temperature of the edge portion is lower than that from the slab stage to the central portion. Further, during the steps of rough rolling and finish rolling, the non-uniformity of the temperature distribution in the width direction is shown in FIG. 5, for example, due to the non-uniform application of descaling water and coolant water and the non-uniform scale thickness distribution. At present, it is becoming more and more complicated as shown.
【０００５】これに対し、巻取り時の鋼板エッジ部の過
冷を防ぐため、仕上げ圧延前にシートバーエッジ部をエ
ッジヒーターにより加熱する技術がある。仕上げ圧延機
出側以降では、同じ目的で特開昭５９−２４５１１号公
報記載のようなマスキングにより鋼板エッジ部に直接落
下、衝突する上面冷却水を遮蔽し、エッジ部での冷却能
力を中央部に比べて低くおさえる技術もある。On the other hand, there is a technique of heating the edge portion of the sheet bar with an edge heater before finish rolling in order to prevent overcooling of the edge portion of the steel sheet during winding. From the exit side of the finishing rolling mill, for the same purpose, the upper surface cooling water that directly falls and collides with the steel plate edge portion is shielded by masking as described in JP-A-59-24511, and the cooling capacity at the edge portion is reduced to the central portion. There is also a technology that keeps the price low compared to.
【０００６】また、鋼板の幅方向温度分布を測定した
後、冷却水量を調節することによって鋼板高温部のみを
冷却する技術が特開昭６０−３６６２５号公報により公
知である。Japanese Patent Laid-Open No. 60-36625 discloses a technique for cooling only the high temperature portion of a steel sheet by measuring the widthwise temperature distribution of the steel sheet and then adjusting the amount of cooling water.
【０００７】[0007]
【発明が解決しようとする課題】冷却水の供給をオンオ
フ制御すること（以下、単に冷却水のオンオフという）
により冷却ゾーン長さを調節する従来の技術には、鋼板
長手方向温度不均一性を改善する効果はあるが、各バル
ブの操作では幅方向で冷却水のオンオフが同じタイミン
グで行われるため、幅方向温度分布を平滑化することは
できなかった。Controlling the supply of cooling water on and off (hereinafter simply referred to as on / off of cooling water)
Although the conventional technique of adjusting the cooling zone length by means of the effect of improving the temperature non-uniformity in the steel plate longitudinal direction, the cooling water is turned on and off in the width direction at the same timing in the operation of each valve. The directional temperature distribution could not be smoothed.
【０００８】またエッジヒーターや特開昭５９−２４５
１１号公報記載のようなマスキングによって巻取り時の
鋼板エッジ部の過冷を防ぐ技術では、幅方向温度分布の
偏差はエッジ部のみでしか矯正することができず、例え
ば図５のＭ、Ｎ点のようなエッジ部から比較的遠い温度
極大点での温度偏差を矯正するとができなかった。とく
に、目的とする材質を得るためには熱間仕上げ圧延直後
から温度履歴を制御しなければならないのに、マスキン
グはホットランテーブル上、つまり冷却過程の途中で使
用する技術であるため、仕上げ圧延直後から幅方向温度
分布を均一にすることは不可能だった。Also, an edge heater and Japanese Patent Laid-Open No. 59-245
In the technique of preventing overcooling of the steel sheet edge portion at the time of winding by masking as described in Japanese Patent Publication No. 11, the deviation of the temperature distribution in the width direction can be corrected only at the edge portion. For example, M and N in FIG. It was not possible to correct the temperature deviation at a temperature maximum point that is relatively far from the edge portion such as a point. Especially, in order to obtain the target material, the temperature history must be controlled immediately after hot finish rolling, but masking is a technique used on the hot run table, that is, during the cooling process. Therefore, it was impossible to make the temperature distribution in the width direction uniform.
【０００９】一方、ホットランテーブル上を走行する鋼
板はさまざまな原因によって幅方向に蛇行する。したが
って、特公昭６０−３６６２５号公報記載の技術によっ
て図５のＭ、Ｎ点が幅方向温度計で折角検知されたとし
ても、その後の蛇行により制御バルブのオンオフでＭ、
Ｎ点を確実に冷却することができないという問題があっ
た。これにたいしては、幅方向温度計と制御バルブとの
間の距離を短くすることが考えられるが、バルブ制御系
の応答速度の制約による限界があった。On the other hand, the steel plate running on the hot run table meanders in the width direction due to various causes. Therefore, even if the M and N points of FIG. 5 are detected by the width direction thermometer by the technique disclosed in Japanese Patent Publication No. S60-36625, the control valve is turned on and off by the meandering thereafter, and
There was a problem that the N point could not be cooled reliably. For this, it is conceivable to shorten the distance between the width direction thermometer and the control valve, but there was a limit due to the restriction of the response speed of the valve control system.
【００１０】本発明は、上記のような問題点を解決し、
熱間仕上げ圧延機出側直近における鋼板幅方向温度分布
の偏差を矯正することによって材質が均一な熱延鋼板を
製造する技術を提供するものである。The present invention solves the above problems,
It is intended to provide a technique for manufacturing a hot-rolled steel sheet having a uniform material by correcting the deviation of the temperature distribution in the steel sheet width direction immediately near the exit side of the hot finish rolling mill.
【００１１】[0011]
【課題を解決するための手段】本発明は、熱間圧延仕上
げ圧延機出側直近において、鋼板が蛇行しないように設
けたセンタリング用サイドガイドと、該サイドガイドの
近傍に取り付けられた鋼板幅方向の温度分布を測定する
ための温度計と、該温度計測の結果にもとずいて冷却水
の供給をオンオフ制御する制御装置と、該サイドガイド
の後方に鋼板下面への冷却水の供給を該制御装置により
オンオフ制御できるノズル群を幅方向に配列した熱延鋼
板の予備冷却装置である。SUMMARY OF THE INVENTION The present invention is directed to a centering side guide provided so that the steel sheet does not meander in the immediate vicinity of the exit side of the hot rolling finish rolling mill, and a steel sheet width direction attached near the side guide. A thermometer for measuring the temperature distribution, a control device for controlling the on / off of the cooling water supply based on the result of the temperature measurement, and a cooling water supply to the bottom surface of the steel plate behind the side guide. It is a pre-cooling device for hot-rolled steel sheets in which nozzle groups that can be on / off controlled by a control device are arranged in the width direction.
【００１２】[0012]
【作用】本発明は、熱間圧延仕上げ圧延機出側直近に鋼
板のセンタリングガイドを設け、その場所に幅方向温度
計を設置し、その直後に下面冷却水のオンオフ制御がで
きるノズルまたはノズル群を幅方向に配列した装置であ
るから、この温度計を用いて鋼板の幅方向温度分布を測
定し、これをフィードバックさせて常に確実に幅方向温
度分布の平滑化をはかることができる。例えば鋼板の幅
方向温度分布が図６に示すように極大値をもつような場
合、この極大を示す箇所のみの冷却を本発明装置を用い
て行うことができる。この装置により鋼板温度を均一化
した後、従来の冷却装置を用いて所定の温度まで冷却を
続行することができる。センタリングガイドなしには鋼
板が蛇行をさけることができず、いかに精密なフィード
バック制御システムを用いても確実な結果は保証されな
い。According to the present invention, a centering guide for a steel plate is provided near the exit side of a hot rolling finish rolling mill, a width direction thermometer is installed at that location, and immediately after that, a nozzle or a group of nozzles capable of on / off control of lower surface cooling water. Since it is an apparatus in which the width direction is arranged in the width direction, it is possible to measure the width direction temperature distribution of the steel sheet using this thermometer and feed it back to always smooth the width direction temperature distribution. For example, in the case where the temperature distribution in the width direction of the steel sheet has a maximum value as shown in FIG. 6, it is possible to cool only the portion showing this maximum by using the device of the present invention. After the steel plate temperature is made uniform by this device, the cooling can be continued to a predetermined temperature by using the conventional cooling device. Without the centering guide, the steel plate cannot avoid meandering, and no matter how precise the feedback control system is used, no reliable result is guaranteed.
【００１３】オンオフ制御を鋼板上面冷却水で行う場
合、注水により落下後鋼板上に滞留する冷却水は注水を
停止している箇所にも流れ込み、これを冷却してしまう
ため、幅方向温度分布の平滑化は困難である。しかし、
本発明装置はオンオフ制御を鋼板下面冷却水のみで行う
ものであるから、鋼板は冷却水を噴出させた箇所のみで
冷却され、幅方向に細かく区分わけして温度分布の偏差
を矯正することができる。When the on-off control is performed by the cooling water on the upper surface of the steel sheet, the cooling water that remains on the steel sheet after falling due to the water injection flows into the place where the water injection is stopped and cools it. Smoothing is difficult. But,
Since the device of the present invention performs the on / off control only with the cooling water on the lower surface of the steel plate, the steel plate is cooled only at the place where the cooling water is jetted, and it is possible to correct the deviation of the temperature distribution by finely dividing it in the width direction. it can.
【００１４】本発明の装置は、熱間仕上げ圧延機出側直
近に設置しているから仕上げ圧延直後から鋼板の幅方向
温度分布を均一化させることができる。これに、冷却水
のオンオフ制御によって冷却ゾーン長さを調節するなど
の従来の技術を組合わせることによって、鋼板の長手方
向および幅方向全体にわたって均一な温度履歴で冷却す
ることが可能となる。Since the apparatus of the present invention is installed near the exit side of the hot finish rolling mill, the temperature distribution in the width direction of the steel sheet can be made uniform immediately after finish rolling. By combining this with a conventional technique such as adjusting the length of the cooling zone by controlling the on / off of the cooling water, it becomes possible to cool the steel sheet with a uniform temperature history over the entire lengthwise and widthwise directions.
【００１５】[0015]
【実施例】本発明の実施例を図面にもとずいて説明す
る。図１は本発明の１実施例を示す図である。図２は図
１中のＢ−Ｂ’断面を鋼板の進行方向から展開した図で
ある。また図４は、熱間圧延ラインに本発明装置を設置
した時の冷却装置の全体図である。Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an embodiment of the present invention. FIG. 2 is a diagram showing the BB ′ cross section in FIG. 1 developed from the traveling direction of the steel sheet. FIG. 4 is an overall view of the cooling device when the device of the present invention is installed in the hot rolling line.
【００１６】図１において、鋼板１が熱間仕上げ圧延機
最終スタンド２にて所定の板厚に圧延加工された後、直
ちに水切りスプレー３によって鋼板上に滞留しているク
ーラント水が排除される。鋼板１は、この後、仕上げ圧
延機出側直近に設置されたサイドガイド４によってセン
タリングされ、図中Ａ−Ａ’線上を通過する時点で放射
温度計５によって幅方向温度分布が測定される。鋼板の
進行方向、温度計の先方には、下面冷却水のオンオフ制
御が可能なノズル８を各テーブルローラー７の間にそれ
ぞれ幅方向に５本ずつ配列されている。In FIG. 1, after the steel plate 1 is rolled to a predetermined plate thickness in the final stand 2 of the hot finish rolling mill, the drainage spray 3 immediately removes the coolant water remaining on the steel plate. After that, the steel sheet 1 is centered by the side guide 4 installed immediately near the exit side of the finishing rolling mill, and the widthwise temperature distribution is measured by the radiation thermometer 5 when the steel sheet 1 passes along the line AA ′ in the figure. Five nozzles 8 capable of on / off control of the lower surface cooling water are arranged in the width direction between the table rollers 7 in the traveling direction of the steel plate and in front of the thermometer.
【００１７】温度計にて測定された幅方向温度分布にも
とずき、本発明の幅方向バルブオンオフ制御装置６で冷
却水の幅方向オンオフ制御パターンを決定する。図３
は、本発明の幅方向バルブオンオフ制御装置のブロック
図である。このうち、１１は幅方向温度分布検出ブロッ
ク、１２は温度極値検出ブロック、１３は幅方向ノズル
バルブオンオフ制御ブロックである。例えば、図５、図
６中Ｍ、Ｎ点のような温度極大点に対応するバルブに対
してオンとし、その他をオフとする指令を出せば、極大
点温度が下がり幅方向温度分布はより均一化される。各
ノズルは、鋼板の測温箇所がノズル直上に到達するまで
の所要時間を考慮に入れた計算の後送信された指令信号
にもとずき、弁のオンオフを行うことができる。これに
よって、仕上げ圧延後温度計直下を通過する時に見られ
た鋼板の幅方向温度偏差を矯正することができる。した
がって、この後ホットランテーブル上で従来の冷却装置
を用いて鋼板を長手方向および幅方向全体にわたって均
一な温度履歴で冷却することが可能となり、製品材質の
均一化をはかることができる。Based on the widthwise temperature distribution measured by the thermometer, the widthwise valve on / off control device 6 of the present invention determines the widthwise on / off control pattern of the cooling water. Figure 3
FIG. 3 is a block diagram of a width direction valve on / off control device of the present invention. Among these, 11 is a width direction temperature distribution detection block, 12 is a temperature extreme value detection block, and 13 is a width direction nozzle valve on / off control block. For example, by issuing a command to turn on the valves corresponding to temperature maximum points such as points M and N in FIGS. 5 and 6 and turn off the others, the maximum point temperature decreases and the temperature distribution in the width direction becomes more uniform. Be converted. Each nozzle can turn on / off the valve based on the command signal transmitted after the calculation in consideration of the time required for the temperature measurement point of the steel plate to reach directly above the nozzle. As a result, it is possible to correct the temperature deviation in the width direction of the steel sheet, which is seen when passing immediately below the thermometer after finish rolling. Therefore, after that, the steel plate can be cooled on the hot run table using a conventional cooling device over the entire lengthwise direction and the widthwise direction with a uniform temperature history, and the product material can be made uniform.
【００１８】本実施例の装置を用いて冷却した高張力熱
延鋼板の材質の均一性を、従来の装置を用いて冷却した
ものと比較して表１に示す。幅方向温度計を設置しない
場合、鋼板温度分布の測定が行えなかったため、その偏
差の矯正はできなかった。したがって、冷却時の温度差
による製品材質のばらつきが大きく、引張り強度の偏差
は幅方向最大で５．０ｋｇ／ｍｍ2 あった。Table 1 shows the homogeneity of the material of the high-strength hot-rolled steel sheet cooled by using the apparatus of the present example in comparison with that by using the conventional apparatus. Without the widthwise thermometer, the steel plate temperature distribution could not be measured, and the deviation could not be corrected. Therefore, there was a large variation in the product material due to the temperature difference during cooling, and the maximum deviation in tensile strength was 5.0 kg / mm 2 .
【００１９】[0019]
【表１】 [Table 1]
【００２０】また、センタリング用サイドガイドを設置
しない場合、鋼板が蛇行した時に鋼板の測温箇所と対応
するオンオフ制御バルブの位置が定まらず、やはり製品
材質のばらつきが大きかった。一方、センタリング用サ
イドガイドを設置した場合、鋼板が蛇行しないから測温
箇所に対応する冷却水のオンオフ制御位置は容易に定め
ることができた。しかし、エッジヒーターやマスキング
など従来の技術を併せて用いた場合、温度偏差の矯正は
鋼板エッジ部で行うことができただけで、中央部での部
分的な矯正はできなかった。Further, when the centering side guide was not installed, the position of the on / off control valve corresponding to the temperature measurement location of the steel sheet was not fixed when the steel sheet meandered, and the product material also had large variations. On the other hand, when the side guide for centering is installed, the steel plate does not meander, so that the on / off control position of the cooling water corresponding to the temperature measurement location can be easily determined. However, when conventional techniques such as an edge heater and masking were also used, the temperature deviation could be corrected only at the edge of the steel plate, but not at the center.
【００２１】これに対し、本発明の装置を用いた場合、
下面冷却水の噴出を幅方向でそれぞれ独立してオンオフ
制御することができたから、温度計で測定した幅方向温
度分布の偏差を矯正することができた。これによって得
られた製品材質のばらつきは小さく、引張り強度の偏差
は幅方向最大で１．０ｋｇ／ｍｍ2 しかなかった。本発
明は鋼板下面冷却水の供給を幅方向でオンオフ変化させ
る冷却予備装置であるから、図４のように本発明装置の
後方に幅方向同じタイミングで冷却水を供給する従来の
冷却装置を配置し、これと組合わせて使用することも可
能である。On the other hand, when the device of the present invention is used,
Since the jetting of the lower surface cooling water could be controlled on and off independently in the width direction, the deviation of the temperature distribution in the width direction measured by the thermometer could be corrected. The variation in the product material thus obtained was small, and the deviation in tensile strength was only 1.0 kg / mm 2 in the maximum in the width direction. Since the present invention is a cooling preliminary device that changes the supply of cooling water on the bottom surface of the steel plate in the width direction, the conventional cooling device that supplies the cooling water at the same timing in the width direction is arranged behind the device of the present invention. However, it is also possible to use it in combination with this.
【００２２】なお、本実施例はパイプノズルから噴出す
る冷却水をバルブの開閉操作によってオンオフするもの
であるが、本発明はこれに限るものではなく、スプレー
ノズルを用いたものであってもよいし、またバルブを使
用せずに冷却水の噴出口と鋼板下面との間に遮蔽板を出
入りさせる構造の装置としてもよい。本実施例では各テ
ーブルローラー間で冷却ノズルを鋼板の幅方向に５本だ
け設置したものとして簡単に説明したが、鋼板の幅方向
温度の偏差をより小さくするためには、ノズル数を増や
して（ノズル間隔を狭くして）冷却水のオンオフ制御を
行う方が望ましい。またノズルは、各テーブルローラー
間で幅方向に複数個ずつ配列させてもよい。In this embodiment, the cooling water ejected from the pipe nozzle is turned on and off by opening and closing the valve. However, the present invention is not limited to this, and a spray nozzle may be used. Alternatively, the device may have a structure in which a shielding plate enters and leaves between the jet of cooling water and the lower surface of the steel plate without using a valve. In the present embodiment, it was briefly described that only five cooling nozzles were installed between the table rollers in the width direction of the steel sheet, but in order to further reduce the deviation of the temperature in the width direction of the steel sheet, the number of nozzles was increased. It is desirable to control the cooling water on / off (by narrowing the nozzle interval). A plurality of nozzles may be arranged in the width direction between the table rollers.
【００２３】[0023]
【発明の効果】本発明により、熱延鋼板の熱間圧延後の
冷却を均一に精密に制御できるようになり製品の性能の
均一化、および性能の高度化が可能となり、ひいては添
加合金元素の制約条件を緩和したり、製品歩留まりを向
上させるなど極めて大きな効果がある。EFFECTS OF THE INVENTION According to the present invention, cooling of hot-rolled steel sheet after hot rolling can be uniformly and precisely controlled, and the performance of the product can be made uniform and the performance can be enhanced. It has extremely great effects such as relaxing constraints and improving product yield.
【図１】本発明の装置の配置を示す説明図。FIG. 1 is an explanatory view showing the arrangement of a device of the present invention.
【図２】図１のＢ−Ｂ’断面図。FIG. 2 is a sectional view taken along line B-B ′ of FIG.
【図３】本発明の幅方向バルブオンオフ制御装置のブロ
ック図。FIG. 3 is a block diagram of a width direction valve on / off control device of the present invention.
【図４】熱間圧延ラインに本発明装置を設置した時の冷
却装置全体図。FIG. 4 is an overall view of a cooling device when the device of the present invention is installed in a hot rolling line.
【図５】従来の冷却装置のよる熱間圧延鋼板の幅方向の
温度分布の説明図。FIG. 5 is an explanatory diagram of a temperature distribution in a width direction of a hot-rolled steel sheet by a conventional cooling device.
【図６】本発明装置による熱間圧延鋼板の幅方向温度計
による温度測定値と冷却水の幅方向オンオフ制御後の温
度分布を示す説明図。FIG. 6 is an explanatory view showing a temperature measurement value of a hot rolled steel sheet by a width direction thermometer by the device of the present invention and a temperature distribution after cooling water on / off control in the width direction.
１ 熱間圧延鋼板 ２ 熱間圧延機最終スタンド ３ 水切りスプレー ４ サイドガイド ５ 放射温度計 ６ 幅方向バルブオンオフ制御装置 ７ テーブルローラー ８ オンオフ制御可能ノズル ９ バルブ １０ 冷却ヘッダー １１ 幅方向温度分布検出ブロック １２ 温度極値検出ブロック １３ 幅方向ノズルバルブオンオフ制御ブロック 1 Hot-rolled steel plate 2 Hot-rolling mill final stand 3 Draining spray 4 Side guide 5 Radiation thermometer 6 Width direction valve on / off control device 7 Table roller 8 On / off controllable nozzle 9 Valve 10 Cooling header 11 Width direction temperature distribution detection block 12 Temperature extreme value detection block 13 Width direction nozzle valve on / off control block
フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ２１Ｄ 9/52 １０２ Continuation of front page (51) Int.Cl. 5 Identification code Office reference number FI technical display area C21D 9/52 102
Claims (1)
却装置の前方に配置される、鋼板の蛇行を防止するセン
タリング用サイドガイドと、該サイドガイドの近傍に取
りつけられた鋼板幅方向の温度分布を測定するための温
度計と、該サイドガイドの後方に配置され鋼板下面へ冷
却水を供給する幅方向に配列されたノズル群と、各ノズ
ルに設置された調整バルブと、かつ該温度計の測定結果
にもとづいて前記調整バルブを介して鋼板幅方向の温度
分布を制御する制御装置、とからなる熱延鋼板の予備冷
却装置。1. A centering side guide, which is arranged near the exit side of the hot rolling finish rolling mill and in front of the cooling device, for preventing the meandering of the steel sheet, and a steel sheet width direction mounted in the vicinity of the side guide. A thermometer for measuring the temperature distribution, a group of nozzles arranged behind the side guides and arranged in the width direction to supply cooling water to the lower surface of the steel plate, a control valve installed in each nozzle, and the temperature A preliminary cooling device for a hot-rolled steel sheet, comprising: a control device for controlling the temperature distribution in the steel sheet width direction via the adjusting valve based on the measurement result of the meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4218900A JPH0663636A (en) | 1992-08-18 | 1992-08-18 | Preliminary cooling device for hot rolled steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4218900A JPH0663636A (en) | 1992-08-18 | 1992-08-18 | Preliminary cooling device for hot rolled steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0663636A true JPH0663636A (en) | 1994-03-08 |
Family
ID=16727077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4218900A Pending JPH0663636A (en) | 1992-08-18 | 1992-08-18 | Preliminary cooling device for hot rolled steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0663636A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10156414A (en) * | 1996-11-29 | 1998-06-16 | Kawasaki Steel Corp | Method for jetting rolling oil in hot rolling of steel strip |
| WO2004110662A1 (en) * | 2003-06-13 | 2004-12-23 | Jfe Steel Corporation | Controllable cooling method for thick steel plate, thick steel plate manufactured by the controllable cooling method, and cooling device for the thick steel plate |
| JP2005118886A (en) * | 2004-12-06 | 2005-05-12 | Jfe Steel Kk | Thin hot-rolled steel sheet manufacturing method |
| JP2010530807A (en) * | 2007-06-22 | 2010-09-16 | エス・エム・エス・ジーマーク・アクチエンゲゼルシャフト | Hot rolling and heat treatment of steel strip |
| US8096159B2 (en) * | 2005-11-08 | 2012-01-17 | Posco | Apparatus and method for supplying lubricant in endless hot rolling equipment |
| JP2020075290A (en) * | 2018-11-02 | 2020-05-21 | 日本製鉄株式会社 | Rolling method for steel piece with rectangular cross section, continuous casting rolling facility and rolling facility |
-
1992
- 1992-08-18 JP JP4218900A patent/JPH0663636A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10156414A (en) * | 1996-11-29 | 1998-06-16 | Kawasaki Steel Corp | Method for jetting rolling oil in hot rolling of steel strip |
| WO2004110662A1 (en) * | 2003-06-13 | 2004-12-23 | Jfe Steel Corporation | Controllable cooling method for thick steel plate, thick steel plate manufactured by the controllable cooling method, and cooling device for the thick steel plate |
| EP1634657A1 (en) * | 2003-06-13 | 2006-03-15 | JFE Steel Corporation | Controllable cooling method for thick steel plate, thick steel plate manufactured by the controllable cooling method, and cooling device for the thick steel plate |
| EP1634657A4 (en) * | 2003-06-13 | 2007-04-18 | Jfe Steel Corp | Controllable cooling method for thick steel plate, thick steel plate manufactured by the controllable cooling method, and cooling device for the thick steel plate |
| KR100780503B1 (en) * | 2003-06-13 | 2007-11-29 | 제이에프이 스틸 가부시키가이샤 | Controllable cooling method for thick steel plate and cooling device for the thick steel plate |
| CN100404154C (en) * | 2003-06-13 | 2008-07-23 | 杰富意钢铁株式会社 | Controllable cooling method for thick steel plate, thick steel plate manufactured by the controllable cooling method, and cooling device for the thick steel plate |
| JP2005118886A (en) * | 2004-12-06 | 2005-05-12 | Jfe Steel Kk | Thin hot-rolled steel sheet manufacturing method |
| US8096159B2 (en) * | 2005-11-08 | 2012-01-17 | Posco | Apparatus and method for supplying lubricant in endless hot rolling equipment |
| JP2010530807A (en) * | 2007-06-22 | 2010-09-16 | エス・エム・エス・ジーマーク・アクチエンゲゼルシャフト | Hot rolling and heat treatment of steel strip |
| JP2020075290A (en) * | 2018-11-02 | 2020-05-21 | 日本製鉄株式会社 | Rolling method for steel piece with rectangular cross section, continuous casting rolling facility and rolling facility |
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