JPH0550131A - Jetting device for descaling - Google Patents
Jetting device for descalingInfo
- Publication number
- JPH0550131A JPH0550131A JP21371291A JP21371291A JPH0550131A JP H0550131 A JPH0550131 A JP H0550131A JP 21371291 A JP21371291 A JP 21371291A JP 21371291 A JP21371291 A JP 21371291A JP H0550131 A JPH0550131 A JP H0550131A
- Authority
- JP
- Japan
- Prior art keywords
- descaling
- rolled material
- injection
- downstream
- finishing
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、仕上スタンド間で圧
延材にデスケーリングを施すデスケーリング噴射装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a descaling injection device for descaling rolled material between finishing stands.
【０００２】[0002]
【従来の技術】通常のホットストリップミルでは、仕上
スタンド列と粗圧延機列の間に設けデスケーリング設備
でスケールを除去し、美麗な表面にした後で仕上スタン
ド列で圧延する。しかし圧延材は仕上スタンド列で圧延
される間にも表面に２次スケールが発生する。このた
め、仕上スタンド列と粗圧延機列の間に設けたデスケー
リング設備のみでは、２次スケールによるスケール疵が
発生し、ホットコイルのスケール疵の発生の防止には十
分ではない。2. Description of the Related Art In a normal hot strip mill, a scale is removed by a descaling equipment provided between a row of finishing stands and a row of rough rolling mills to obtain a beautiful surface, and then rolling is performed by the row of finishing stands. However, while the rolled material is rolled by the finishing stand row, secondary scale is generated on the surface. Therefore, only the descaling equipment provided between the finishing stand row and the row of rough rolling mills causes the scale flaw due to the secondary scale, and is not sufficient to prevent the scale flaw of the hot coil from occurring.
【０００３】２次スケールを除去するために、仕上スタ
ンド間にデスケーリング装置を設けた例はある。しかし
従来の仕上スタンド間デスケーリング装置は上流仕上ス
タンド側に配置されているために、２次スケールの除去
が十分ではないという問題点がある。後で述べる如く本
発明者等の知見によると、仕上スタンド間デスケーリン
グ装置は下流仕上スタンド側に配置すると２次スケール
を除去する効果は大きい。しかし下流仕上スタンド側に
は下流仕上スタンド用の誘導装置があり、その誘導面が
噴射ノズルからの吐出噴流の通過を妨げるために、従来
は仕上スタンド間デスケーリング装置を下流仕上スタン
ド側に設ける事は行われていなかった。There is an example in which a descaling device is provided between the finishing stands in order to remove the secondary scale. However, since the conventional descaling device between finishing stands is arranged on the upstream finishing stand side, there is a problem that the removal of the secondary scale is not sufficient. As will be described later, according to the knowledge of the present inventors, when the inter-finishing stand descaling device is arranged on the downstream finishing stand side, the effect of removing the secondary scale is great. However, on the downstream finishing stand side, there is a guiding device for the downstream finishing stand, and in order to prevent the guide surface from passing the discharge jet from the injection nozzle, conventionally, a descaling device between finishing stands was provided on the downstream finishing stand side. Was not done.
【０００４】図５は従来の仕上スタンド間デスケーリン
グ装置の例である。図５(Ａ)は幅広圧延材用のヘッダー
管１と幅狭圧延材用のヘッダー管１'とを有するデスケ
ーリング装置の例で、幅広圧延材の場合には広い幅に亘
って噴射ノズルが配されたヘッダー管１を専ら用い、幅
狭圧延材の場合には狭い幅に亘って噴射ノズルが配され
たヘッダー管１'を専ら使用する。図５(Ｂ)は一本のヘ
ッダー管内に中央室１５と側室１６，１６'を設けた例
で幅狭圧延材の場合には中央室１５のみに高圧水を供給
し、幅広圧延材の場合には中央室１５と側室１６，１
６'に高圧水を供給するデスケーリング装置である。し
かしこれ等のデスケーリング装置では吐出噴水をきめ細
かく調整することは難しい。即ち例えば、幅広圧延材と
幅狭圧延材の中間の幅の圧延材の場合には図５Ａの広幅
用のヘッダー管１を用いあるいは図５Ｂの１６，１６'
も用いる事となるが、圧延材の幅から外れた位置の噴射
ノズルからも３０ｋｇ／ｃｍ2〜５０ｋｇ／ｃｍ2の高圧
水が噴射し、この高圧水が他の周辺設備にかゝって周辺
設備を損傷させせるという問題点がある。またデスケー
リング高圧水の一部が無駄となるために高圧水の使用原
単位が高いという問題点や、吐水噴水が圧延材を局所的
に低温に冷却し過ぎるという問題点がある。FIG. 5 shows an example of a conventional descaling device between finishing stands. FIG. 5 (A) shows an example of a descaling device having a header tube 1 for wide rolled material and a header tube 1'for narrow rolled material. In the case of wide rolled material, the injection nozzle is spread over a wide width. The arranged header pipe 1 is exclusively used, and in the case of a narrow rolled material, the header pipe 1'where the injection nozzles are arranged over a narrow width is exclusively used. FIG. 5B shows an example in which a central chamber 15 and side chambers 16 and 16 'are provided in one header pipe. In the case of a narrow rolled material, high-pressure water is supplied only to the central chamber 15, and in the case of a wide rolled material. Central chamber 15 and side chambers 16 and 1
6'is a descaling device that supplies high-pressure water. However, it is difficult for these descaling devices to finely adjust the discharge fountain. That is, for example, in the case of a rolled material having an intermediate width between the wide rolled material and the narrow rolled material, the wide header pipe 1 of FIG. 5A is used or 16, 16 ′ of FIG. 5B.
Although it is also possible to use, high-pressure water of 30kg / cm 2 ~50kg / cm 2 from the injection nozzle at a position deviated from the width of the rolled material is injected, surrounding the orゝI The high-pressure water other peripheral equipment There is a problem of damaging the equipment. In addition, there is a problem that the unit consumption of high-pressure water is high because a part of the descaling high-pressure water is wasted, and that the spout water fountain locally locally cools the rolled material to a low temperature.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、従来のもの
よりも２次スケールの除去効率が優れ、かつ吐出噴水が
周辺設備にかゝって周辺設備を損傷させる事がなく、デ
スケーリング水の使用原単位が低く、圧延材を局所的に
過剰に冷却することがない、仕上スタンド間デスケーリ
ング装置の提供を課題としている。DISCLOSURE OF THE INVENTION The present invention is more efficient in removing secondary scales than conventional ones, and does not damage the peripheral equipment by the discharge fountain, thereby preventing descaling water. It is an object of the present invention to provide a descaling device between finishing stands, which has a low basic unit consumption and does not locally excessively cool a rolled material.
【０００６】[0006]
【課題を解決するための手段】図１は本発明のデスケー
リング装置に用いる、多数の噴射ノズルを備えたヘッダ
ー管の例を示す図である。本発明のヘッダー管１には、
幅が最大の圧延材の場合にも圧延材の全幅に亘って噴流
を吐出できるように、多数の噴射ノズル４が設けられて
いる。また、各噴射ノズルのそれぞれにはノズル開度調
節弁あるいは流量調節弁５が設けられている。このノズ
ル開度調節弁あるいは流量調節弁５は、例えば幅狭圧延
材の場合は、圧延材の幅から外れた位置の噴射ノズル４
を閉止して、圧延材のデスケーリングを行う。このため
に吐出噴水が他の周辺設備にかゝる事を防止し、またデ
スケーリング用の高圧水の使用量が節減できる。本発明
ではまた、後で述べる如く、幅方向温度計と演算装置と
制御装置とを用いて、各噴射ノズルの吐出噴水量を調整
することができるが、この吐出噴水量の調整は制御装置
の指示に基づいて、各ノズル開度調節弁５で開度を調整
する事によって達せられる。FIG. 1 is a view showing an example of a header pipe having a large number of injection nozzles, which is used in the descaling device of the present invention. In the header tube 1 of the present invention,
A large number of injection nozzles 4 are provided so that the jet flow can be discharged over the entire width of the rolled material even when the rolled material has the maximum width. A nozzle opening control valve or a flow rate control valve 5 is provided for each of the injection nozzles. This nozzle opening control valve or flow rate control valve 5 is, for example, in the case of a narrow rolled material, the injection nozzle 4 at a position outside the width of the rolled material.
Is closed and descaling of the rolled material is performed. For this reason, it is possible to prevent the discharged fountain from reaching other peripheral equipment and reduce the amount of high-pressure water used for descaling. Further, in the present invention, as will be described later, it is possible to adjust the discharge fountain amount of each injection nozzle by using the width direction thermometer, the arithmetic unit, and the control unit. This can be achieved by adjusting the opening of each nozzle opening control valve 5 based on the instruction.
【０００７】図２は効率的な２次スケール除去を行うた
めの条件を示す例の説明図である。Ｆ1は上流仕上スタ
ンドでＦ2は下流仕上スタンドで圧延材は矢印６方向に
走行する。上流仕上スタンドＦ1を出た直後は、圧延材
の表面温度は低く２次スケールも薄く、また２次スケー
ルには点状ふくれがないためにデスケーリングし難い。
下流仕上スタンドＦ2に近づくと、圧延材の表面温度が
上昇し、２次スケールも厚くなり、２次スケールには点
状ふくれが発生してデスケーリングが容易になる。図中
斜線範囲は、効率的な２次スケール除去が可能なデスケ
ーリングの範囲である。既に述べた如く、従来はデスケ
ーリング装置は上流仕上スタンドＦ1側の(Ａ)点に配置
されていたために、２次スケールの除去を十分に行う事
は難しい。本発明ではデスケーリング装置は下流仕上ス
タンドＦ2側の(Ｂ)点に設けるが、下流仕上スタンド側
に設けたために、２次スケールの除去は十分であり且つ
容易である。FIG. 2 is an explanatory diagram of an example showing conditions for performing efficient secondary scale removal. F 1 is an upstream finishing stand, F 2 is a downstream finishing stand, and the rolled material runs in the direction of arrow 6. Immediately after leaving the upstream finishing stand F 1 , the surface temperature of the rolled material is low, the secondary scale is thin, and descaling is difficult because the secondary scale does not have point swelling.
When approaching the downstream finishing stand F 2 , the surface temperature of the rolled material rises, the secondary scale becomes thicker, and point-like swelling occurs on the secondary scale to facilitate descaling. The shaded area in the drawing is a range of descaling that enables efficient secondary scale removal. As described above, since the descaling device is conventionally arranged at the point (A) on the upstream finishing stand F 1 side, it is difficult to sufficiently remove the secondary scale. In the present invention, the descaling device is provided at point (B) on the downstream finishing stand F 2 side, but since it is provided on the downstream finishing stand side, removal of the secondary scale is sufficient and easy.
【０００８】図２で２は下流仕上スタンドＦ2の誘導装
置の誘導面である。本発明ではデスケーリング装置を下
流仕上スタンド側の(Ｂ)点に設けるが、格別の工夫を行
わないでデスケーリング装置を(Ｂ)点に設けると、噴射
ノズルからの噴射水流は矢印７の如く、誘導装置の誘導
面２に遮られて圧延材に達しない。In FIG. 2, reference numeral 2 is a guide surface of the guide device of the downstream finishing stand F 2 . In the present invention, the descaling device is provided at the point (B) on the downstream finishing stand side. However, if the descaling device is provided at the point (B) without special measures, the jet water flow from the jet nozzle is as shown by arrow 7. , The guide surface 2 of the guide device does not reach the rolled material.
【０００９】図３は、本発明の誘導装置の誘導面の説明
図である。図３で圧延材１０は、上部誘導面２と下部誘
導面２０によって案内されて、矢印６方向に走行し、下
流仕上スタンド(図示しない)に噛込まれる。本発明では
噴射ノズル4を備えたヘッダー管(図示しない)を誘導装
置の誘導面２の外側上方に設け、誘導装置の誘導面２に
は噴射ノズル４からの噴射水流７を通過させる切欠き８
を設ける。本発明では切欠き８を設けたために、噴射水
流７は誘導面２に遮られることなく、圧延材の上面に達
し、圧延材の２次スケールを除去する。下部誘導面２０
については、図示は省くが、下部のヘッダー管は誘導装
置の誘導面２０の外側下方に設けるが、本発明の誘導面
２０には切欠き９が設けられるため、噴射水流は圧延材
１０の下面に達し、圧延材の２次スケールを除去する。FIG. 3 is an explanatory view of the guide surface of the guide device of the present invention. In FIG. 3, the rolled material 10 is guided by the upper guide surface 2 and the lower guide surface 20, travels in the direction of arrow 6, and is caught in a downstream finishing stand (not shown). In the present invention, a header pipe (not shown) having an injection nozzle 4 is provided above and outside the guide surface 2 of the guide device, and the guide surface 2 of the guide device is provided with a notch 8 through which the jet water flow 7 from the injection nozzle 4 passes.
To provide. In the present invention, since the notch 8 is provided, the jet water flow 7 reaches the upper surface of the rolled material without being blocked by the guide surface 2 and removes the secondary scale of the rolled material. Lower guide surface 20
Although not shown, the lower header pipe is provided outside and below the guide surface 20 of the guide device, but since the guide surface 20 of the present invention is provided with the notch 9, the jet water flow is directed to the lower surface of the rolled material 10. And the secondary scale of the rolled material is removed.
【００１０】図４は本発明のデスケーリング噴射方法の
例の説明図である。本発明ではノズル開度調節弁５を有
し、開閉があるいは開度調整が独立して可能な多数の噴
射ノズルを備えたヘッダー管を下流仕上スタンドＦ4に
近づけて配置したデスケーリング噴射装置を用いて、該
ヘッダー管よりも上流側に例えばＦ3仕上スタンド側に
あるいはＦ3仕上スタンドよりも更に上流に幅方向温度
計１１を設ける。幅方向温度計は圧延材の幅方向の小区
分(メッシュ)毎の温度を検知する。圧延材の表面に温度
むらがある場合は、高温部には２次スケールが発生する
ために強いデスケーリングが必要であるが、低温部には
２次スケールの発生が少ないためにデスケーリングは不
必要であり、また低温部に噴射水流を噴射すると、圧延
材を局所的に過剰に冷却するために圧延材の品質が損な
われる。FIG. 4 is an explanatory view of an example of the descaling injection method of the present invention. According to the present invention, there is provided a descaling injection device in which a header pipe having a nozzle opening control valve 5 and having a large number of injection nozzles capable of opening and closing or adjusting the opening independently is arranged close to a downstream finishing stand F 4. By using the width direction thermometer 11, for example, on the upstream side of the header pipe, on the F 3 finishing stand side, or further upstream of the F 3 finishing stand. The width direction thermometer detects the temperature of each small section (mesh) in the width direction of the rolled material. If there is temperature unevenness on the surface of the rolled material, strong descaling is required because the secondary scale is generated in the high temperature part, but descaling is not necessary because the secondary scale is less generated in the low temperature part. If necessary, and if the jet of water is injected to the low temperature portion, the quality of the rolled material is impaired because the rolled material is locally excessively cooled.
【００１１】図４で、上位プロセスコンピューター１４
から、各圧延材毎にデスケーリングが必要な温度Ｔoiを
演算するのに必要な情報を演算装置１２に入力し、演算
装置１２は例えば下記式に沿ってＴoiを演算する。In FIG. 4, the host process computer 14
From this, the information necessary for calculating the temperature Toi for which descaling is required for each rolled material is input to the calculation device 12, and the calculation device 12 calculates Toi according to the following formula, for example.
【００１２】 Ｔoi＝α1(ｔ−ｔ0)＋α2(ＦＴ−ＦＴ0）+α3 但しα1，α2，α3：制御定数、ｔ：通板中の板厚、
ｔ0：基準板厚、ＦＴ：仕上出口温度、ＦＴ0：基準仕上
出口温度、上記Ｔoiは、幅方向の小区分(メッシュ)毎に
算出される。幅方向の温度計で検出したメッシュの検出
温度Ｔiと、該メッシュの算出温度Ｔoiを対比する。Ｔi
＞Ｔoiの場合には該メッシュに相当する位置に、制御装
置１３およびノズル開閉調節弁５を通じて高圧水を噴射
する。Ｔi＜Ｔoiの場合には制御装置１３およびノズル
開閉調節弁５を通じて噴射ノズルからの噴射水を例えば
遮断する。この方法によると圧延材に局所的に冷却され
過ぎる部分が発生する事を防止できる。Toi = α 1 (t−t 0 ) + α 2 (FT−FT 0 ) + α 3 where α 1 , α 2 and α 3 are control constants, t is the plate thickness in the threaded plate,
t 0 : reference plate thickness, FT: finishing outlet temperature, FT 0 : reference finishing outlet temperature, and the above Toi is calculated for each small section (mesh) in the width direction. The detected temperature Ti of the mesh detected by the thermometer in the width direction is compared with the calculated temperature Toi of the mesh. Ti
When> Toi, high-pressure water is injected through the control device 13 and the nozzle opening / closing control valve 5 to the position corresponding to the mesh. When Ti <Toi, the water jet from the jet nozzle is shut off, for example, through the controller 13 and the nozzle opening / closing control valve 5. According to this method, the rolled material can be prevented from being locally cooled.
【００１３】[0013]
【発明の効果】本発明では、デスケーリング装置を下流
仕上スタンドに近づけて配置したために、また噴射ノズ
ルからの噴射水流は誘導装置の誘導面に遮られないで圧
延材に達するために、２次スケールの除去効率が優れて
いる。According to the present invention, the descaling device is arranged close to the downstream finishing stand, and the jet water flow from the jet nozzle reaches the rolled material without being blocked by the guide surface of the guide device. Excellent scale removal efficiency.
【００１４】本発明では噴射水流が誘導装置の誘導面に
かゝる事がなく、また圧延材の幅が変わった場合は圧延
材から外れた噴射ノズルは閉止するために周辺設備に噴
射水流がかゝる事がなく、このために周辺設備を損傷さ
せる事を防止しかつデスケーリング用の高圧水の使用量
を節減できる。According to the present invention, the jet water flow does not cover the guide surface of the guide device, and when the width of the rolled material changes, the jet nozzle that is disengaged from the rolled material closes so that the jet water flows to the peripheral equipment. Therefore, it is possible to prevent damage to peripheral equipment and reduce the amount of high-pressure water used for descaling.
【００１５】また本発明によると、デスケーリング用の
噴射水流が圧延材を局所的に過剰に冷却することがな
い。Further, according to the present invention, the jet water for descaling does not locally excessively cool the rolled material.
【００１６】以上の如く、本発明は、狭隘な仕上スタン
ド間に簡易に設ける事ができるデスケーリング装置であ
って、圧延材の２次スケールの除去を必要で且つ十分な
程度に行うことができる。As described above, the present invention is a descaling device that can be easily installed between narrow finishing stands, and can remove the secondary scale of the rolled material to a necessary and sufficient extent. .
図１は本発明で用いる、多数の噴射ノズルを有するヘッ
ダー管の説明図、図２は効率的な２次スケール除去を行
うための条件の説明図、図３は本発明の誘導装置の誘導
面の説明図、図４は本発明のデスケーリング噴射方法の
説明図、図５は従来の仕上スタンド間デスケーリング装
置の例の説明図、である。 ［符号の説明】 １(１')：ヘッダー管、 ２：誘導装置の誘導面、
３：高圧水供給用配管、４：噴射ノズル、 ５：ノズル
開度調節弁、 ６：圧延材の走行方向、７：噴射水流、
８：切欠き、 ９：切欠き、 １０：圧延材、 １
１：幅方向温度計、 １２：演算装置、 １３：制御装
置、 １４：上位プロセスコンピューター、 １５：中
央室、 １６(１６')：側室、 ２０：誘導装置の誘導
面。FIG. 1 is an explanatory view of a header pipe having a large number of injection nozzles used in the present invention, FIG. 2 is an explanatory view of conditions for efficiently performing secondary scale removal, and FIG. 3 is a guide surface of a guide device of the present invention. FIG. 4 is an explanatory diagram of the descaling injection method of the present invention, and FIG. 5 is an explanatory diagram of an example of a conventional descaling device between finishing stands. [Explanation of reference symbols] 1 (1 '): header pipe, 2: guide surface of guide device,
3: high pressure water supply pipe, 4: injection nozzle, 5: nozzle opening control valve, 6: traveling direction of rolled material, 7: injection water flow,
8: Notch, 9: Notch, 10: Rolled material, 1
1: Width direction thermometer, 12: Arithmetic device, 13: Control device, 14: Upper process computer, 15: Central room, 16 (16 '): Side room, 20: Guiding surface of guiding device.
Claims (2)
設けるデスケーリング装置であって、開閉があるいは開
度調整がそれぞれ独立して可能な多数の噴射ノズルを備
えたヘッダー管を有し、該ヘッダー管は下流仕上スタン
ドに近づけて配置されていることを特徴とする、デスケ
ーリング噴射装置1. A descaling device provided between finishing stands of a hot strip mill, comprising a header pipe having a large number of injection nozzles that can be opened and closed or adjusted in opening independently. Is located closer to the downstream finishing stand, the descaling injector
設けるデスケーリング装置であって、開閉があるいは開
度調整がそれぞれ独立して可能な多数の噴射ノズルを備
えたヘッダー管を下流仕上スタンドの誘導装置の外側上
方およびまたは外側下方に設けてなり、該誘導装置の誘
導面には噴射ノズルからの噴射水流を通過させる切欠き
を設けたことを特徴とする、デスケーリング噴射装置2. A descaling device provided between finishing stands of a hot strip mill, wherein a header pipe having a large number of injection nozzles that can be independently opened and closed or adjusted in opening degree is used as a guiding device for the downstream finishing stand. Descaling injection device, characterized in that it is provided above and / or below the outside of the device, and a notch is provided on the guide surface of the guide device to allow the flow of the injection water from the injection nozzle to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3213712A JPH089057B2 (en) | 1991-08-26 | 1991-08-26 | Descaling injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3213712A JPH089057B2 (en) | 1991-08-26 | 1991-08-26 | Descaling injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0550131A true JPH0550131A (en) | 1993-03-02 |
| JPH089057B2 JPH089057B2 (en) | 1996-01-31 |
Family
ID=16643741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3213712A Expired - Lifetime JPH089057B2 (en) | 1991-08-26 | 1991-08-26 | Descaling injector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089057B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728655A (en) * | 2012-06-02 | 2012-10-17 | 马鞍山市凯敏钢缆有限责任公司 | Descaling device for pickling-free drawing of middle and high carbon wire rods |
| CN107433289B (en) * | 2016-05-27 | 2019-05-24 | 上海梅山钢铁股份有限公司 | Energy-efficient descaling header |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62289315A (en) * | 1986-06-09 | 1987-12-16 | Kobe Steel Ltd | Cooling device for high temperature steel plate |
| JPS6462423A (en) * | 1987-08-31 | 1989-03-08 | Kawasaki Steel Co | Method for cooling rolled steel plate |
-
1991
- 1991-08-26 JP JP3213712A patent/JPH089057B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62289315A (en) * | 1986-06-09 | 1987-12-16 | Kobe Steel Ltd | Cooling device for high temperature steel plate |
| JPS6462423A (en) * | 1987-08-31 | 1989-03-08 | Kawasaki Steel Co | Method for cooling rolled steel plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH089057B2 (en) | 1996-01-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5701775A (en) | Process and apparatus for applying and removing liquid coolant to control temperature of continuously moving metal strip | |
| JPS6314052B2 (en) | ||
| WO2014041868A1 (en) | Nozzle header, cooling device, device for producing hot-rolled steel sheet, and method for producing hot-rolled steel sheet | |
| KR20090071142A (en) | Apparatus for cooling hot materials | |
| JP5130970B2 (en) | Steel cooling device and cooling method | |
| CA2894480A1 (en) | Device and method for cooling rolled stock | |
| JPH0550131A (en) | Jetting device for descaling | |
| JP2000001719A (en) | Device for cooling high temperature steel plate | |
| JP2001321821A (en) | Device for cooling hot-rolled steel strip | |
| JPWO2018056164A1 (en) | Apparatus and method for cooling hot rolled steel sheet | |
| KR100529055B1 (en) | Device for cooling strip in continuous annealing furnace | |
| JP5181752B2 (en) | Steel cooling method and cooling device | |
| JP2760907B2 (en) | Descaling header and descaling device on the inlet side of hot continuous finishing mill | |
| JPH07214136A (en) | Device for cooling lower surface of high temperature metallic plate | |
| JPH0550132A (en) | Method for jetting high pressure water between finish stands | |
| JPS591641A (en) | Cooler for floating beltlike metal | |
| JP4918876B2 (en) | Steel cooling method and apparatus | |
| JPS5926371B2 (en) | Cooling equipment for hot rolled steel sheets | |
| JP3675372B2 (en) | Draining method of high temperature steel sheet | |
| CN113319130B (en) | Continuous rolling plate temperature control method and device | |
| JPH0550133A (en) | Jetting method for descaling | |
| JPS6043209B2 (en) | steel plate cooling system | |
| JP3370808B2 (en) | Hot rolled material cooling system | |
| JPH09276925A (en) | Method for descaling hot rolled steel sheet | |
| JPH08155527A (en) | Cooler for hot rolled metallic strip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960716 |