JP3276318B2 - Cooling device for steel plate edge - Google Patents
Cooling device for steel plate edgeInfo
- Publication number
- JP3276318B2 JP3276318B2 JP23191797A JP23191797A JP3276318B2 JP 3276318 B2 JP3276318 B2 JP 3276318B2 JP 23191797 A JP23191797 A JP 23191797A JP 23191797 A JP23191797 A JP 23191797A JP 3276318 B2 JP3276318 B2 JP 3276318B2
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- cooling
- steel sheet
- cooling water
- edge
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
-
- 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
- B21B45/02—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 for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鋼板の製造方法及
び鋼板端部の冷却装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a steel sheet and a cooling device for cooling an end of the steel sheet.
【０００２】[0002]
【従来の技術】図６は鋼板端部の耳波変形を示す斜視
図、図７は図６のVII −VII 矢視図、図８は図６のVIII
−VIII矢視図、図９は鋼板製造工程の説明図である。2. Description of the Related Art FIG. 6 is a perspective view showing an ear wave deformation at an end of a steel plate, FIG. 7 is a view taken along the line VII--VII of FIG. 6, and FIG.
FIG. 9 is an explanatory view of the steel plate manufacturing process, as viewed from the arrow VIII.
【０００３】鋼板の製造工程は、図９に示すように、ド
ラムキャスター等の連続鋳造装置２０によって鋼板１が
連続的に製造され、次工程のエッジトリマー２１によっ
て、鋼板１エッジ部の材料不良部が切り取られる。この
時の切断加工により鋼板１のエッジ部が加工硬化を起こ
しているので、この硬化部を軟化させるため、誘導加熱
式のエッジヒータ２２が設置されている。As shown in FIG. 9, a steel plate 1 is continuously manufactured by a continuous casting device 20 such as a drum caster, and a defective portion of an edge portion of the steel plate 1 is formed by an edge trimmer 21 in the next process. Is cut off. Since the edge portion of the steel sheet 1 is hardened by the cutting at this time, an edge heater 22 of an induction heating type is provided to soften the hardened portion.
【０００４】このエッジヒータ２２では、鋼板１のエッ
ジ部を約９５０℃まで昇温加熱しているが、その加熱に
伴って図６〜８に示すように、鋼板１は板幅Ｗのエッジ
部に耳波１１が発生していた。この耳波１１は、急峻度
αで表わされ、図７の波長Ｌと振幅δの関係から、急峻
度α＝（δ／Ｌ）×１００％ で表わされる。In this edge heater 22, the edge of the steel sheet 1 is heated to about 950 ° C., and the steel sheet 1 is heated to an edge of a width W as shown in FIGS. Ear wave 11 was generated. The ear wave 11 is represented by the steepness α, and is represented by the steepness α = (δ / L) × 100% from the relationship between the wavelength L and the amplitude δ in FIG.
【０００５】[0005]
【発明が解決しようとする課題】ところが、従来では、
耳波１１の急峻度αが、例えば７〜９％発生し、耳波量
が大きい状態のままで、図中矢印２５の工程を経てコイ
ル２４ａに巻き取られていたので、巻き崩れや、巻き取
り不良などの問題が発生していた。However, in the prior art,
The steepness α of the ear wave 11 is, for example, 7 to 9%, and the ear wave 11 is wound around the coil 24a through the process of the arrow 25 in the figure while the amount of the ear wave is large. Problems such as poor picking have occurred.
【０００６】そこで、本発明の目的は、耳波の急峻度α
を小さくし、耳波量を低減させることにより、巻き取り
を円滑にし、巻き取り不良などを解消することができる
鋼板の製造方法及び鋼板端部の冷却装置を提供すること
にある。Accordingly, an object of the present invention is to provide a steepness α of an ear wave.
It is an object of the present invention to provide a method of manufacturing a steel sheet and a cooling device for a steel sheet end, which can reduce winding and smooth the winding by reducing the amount of ear waves and can eliminate poor winding.
【０００７】[0007]
【課題を解決するための手段】前記目的を達成するため
に、本発明に係る鋼板端部の冷却装置は、鋼板を通過さ
せながら鋼板端部の耳波状部を冷却する冷却室と、同冷
却室内を通過する鋼板の上方部及び下方部又はそのいず
れか一方に設置され、通過する鋼板端部の耳波状部に向
けて冷却水を噴射するスプレーノズルと、同スプレーノ
ズルに冷却水を供給する冷却水配管とを具備し、前記ス
プレーノズルを鋼板の通過方向に対して複数個並設する
と共に、同スプレーノズル設置位置の前記鋼板の中央部
側位置に、冷却水の鋼板中央部側への流れを阻止するス
クレーパを配設したことを特徴とする。 In order to achieve the above object, a cooling device for an end portion of a steel sheet according to the present invention is provided.
A cooling chamber that cools the undulations at the end of the steel plate
Upper and / or lower part of steel sheet passing through the cavern
Installed on one side, facing the undulations at the end of the steel sheet passing through
Spray nozzle that sprays cooling water
A cooling water pipe for supplying cooling water to the nozzle.
A plurality of play nozzles are arranged in parallel with the passing direction of the steel plate
And the central part of the steel plate at the spray nozzle installation position
Side to prevent cooling water from flowing toward the center of the steel plate.
A creper is provided.
【０００８】[0008]
【０００９】[0009]
【発明の実施の形態】以下本発明に係る潤滑式圧延機及
び該圧延機の圧延ロールを実施例により図面を用いて詳
細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A lubricating rolling mill according to the present invention and a rolling roll of the rolling mill will be described below in detail with reference to the drawings.
【００１０】［第１実施例］図１は第１実施例としての
鋼板端部の冷却装置の説明図、図２は図１のII−II断面
矢視図、図３は鋼板端部の要部拡大説明図、図５は変形
例としての鋼板端部の要部拡大説明図、図９は鋼板製造
工程の説明図である。尚、これらの図において、図６〜
８で説明した従来技術と同一部分には同一符号で示し重
複する説明は省略する。[First Embodiment] FIG. 1 is an explanatory view of a cooling device for an end portion of a steel plate as a first embodiment, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. FIG. 5 is an enlarged view of a main part of a steel sheet end as a modification, and FIG. 9 is an explanatory view of a steel sheet manufacturing process. In these figures, FIGS.
8 are denoted by the same reference numerals and the description thereof will not be repeated.
【００１１】本実施例では、図９の鋼板の製造工程で、
エッジヒータ２２による加熱によって鋼板１のエッジ部
に発生した耳波量を低減させ、次工程でのコイルの巻き
取り不良を解消するために、エッジヒータ２２の出側に
エッジ冷却装置２３を設け、鋼板１のエッジ部をスプレ
ー冷却することによって耳波量を低減させるように構成
したものである。In this embodiment, in the manufacturing process of the steel sheet shown in FIG.
An edge cooling device 23 is provided on the outlet side of the edge heater 22 to reduce the amount of ear waves generated at the edge of the steel sheet 1 due to the heating by the edge heater 22 and eliminate winding failure in the next step. The configuration is such that the amount of ear waves is reduced by spray cooling the edge of the steel plate 1.
【００１２】図９に示すように、ドラムキャスター等の
連続鋳造装置２０によって、鋼板１が連続的に製造さ
れ、エッジトリマー２１によって、鋼板１のエッジの材
料不良部が切り取られ、その時の切断加工によるエッジ
部の加工硬化を軟化させるために、誘導加熱式のエッジ
ヒータ２２が設置されている。As shown in FIG. 9, a steel sheet 1 is continuously manufactured by a continuous casting device 20 such as a drum caster, and a defective material of an edge of the steel sheet 1 is cut off by an edge trimmer 21. In order to soften the work hardening of the edge portion due to the above, an edge heater 22 of an induction heating type is installed.
【００１３】このエッジヒータ２２の出側に、本実施例
の特徴とするエッジ冷却装置２３を設け、鋼板１のエッ
ジ部を効果的にスプレー冷却し、エッジ部に発生してい
た耳波量を低減させ、耳波量の小さくなった鋼板１を、
コイル２４に巻き取るようになっている。On the outlet side of the edge heater 22, an edge cooling device 23, which is a feature of the present embodiment, is provided to effectively spray-cool the edge of the steel sheet 1 and reduce the amount of ear waves generated at the edge. The steel plate 1 with reduced ear wave volume is
It is wound around a coil 24.
【００１４】図１〜２において、２は鋼板１が通過しな
がら鋼板１端部がスプレー冷却される冷却室、３は冷却
室２の上部及び下部に複数配置され鋼板１端部に向けて
水噴射するスプレーノズル、４は複数のスプレーノズル
３へ冷却水を供給する上，下の冷却水配管である。これ
らの冷却室２、複数のスプレーノズル３、上，下の冷却
水配管４が組み合わされてエッジ冷却装置２３（図９参
照）が構成されている。In FIGS. 1 and 2, reference numeral 2 denotes a cooling chamber in which the end of the steel sheet 1 is spray-cooled while the steel sheet 1 passes through, and 3 denotes a plurality of cooling chambers arranged at the upper and lower portions of the cooling chamber 2 for water toward the end of the steel sheet 1. The spray nozzles 4 for spraying are cooling water pipes for supplying cooling water to the plurality of spray nozzles 3. The cooling chamber 2, the plurality of spray nozzles 3, and the upper and lower cooling water pipes 4 are combined to form an edge cooling device 23 (see FIG. 9).
【００１５】上記のように構成されるため、図１で示す
ように、冷却室２の上部及び下部に配置された複数のス
プレーノズル３に、冷却水配管４から冷却水が供給され
ると、スプレーノズル３からの冷却水が鋼板１端部に向
けて噴射され、冷却室２内を通過している鋼板１の端部
を、例えば、９５０℃から３５０℃へ冷却するようにな
っている。Since cooling water is supplied from a cooling water pipe 4 to a plurality of spray nozzles 3 arranged above and below the cooling chamber 2 as shown in FIG. Cooling water from the spray nozzle 3 is sprayed toward the end of the steel plate 1 to cool the end of the steel plate 1 passing through the cooling chamber 2 from, for example, 950 ° C. to 350 ° C.
【００１６】ここで、スプレーノズル３の取付位置は、
図３に示すように、例えば、噴射角θ＝７５°以内、高
さＨ＝２５０ｍｍ、有効冷却幅Ｅ＝３０ｍｍ、無効冷却
幅Ｆ＝７０ｍｍに設定されている場合には、鋼板１端部
の冷却効果が高く、この時の急峻度αは、実験結果によ
ると３〜４％であり、耳波量を小さくできることが確認
されている。Here, the mounting position of the spray nozzle 3 is as follows.
As shown in FIG. 3, for example, when the injection angle θ is set to within 75 °, the height H is set to 250 mm, the effective cooling width E is set to 30 mm, and the invalid cooling width F is set to 70 mm, The cooling effect is high, and the steepness α at this time is 3 to 4% according to the experimental results, and it has been confirmed that the ear wave amount can be reduced.
【００１７】また、噴射角θを７５°よりも大きくする
と、冷却水が鋼板１の中央部方向へ流れ込むことにな
り、エッジ部のみを冷却できなくなるので、噴射角θ＝
７５°以内が望ましい。If the injection angle θ is larger than 75 °, the cooling water will flow toward the center of the steel sheet 1 and it will not be possible to cool only the edges.
It is desirable to be within 75 °.
【００１８】さらに、スプレーノズル３の取付位置を、
図５に示すように、鋼板１の板幅方向に２列配置し、２
列又は２列以上の配置によって水量密度領域を広くした
場合にも、上記と同様の作用・効果が得られるものであ
る。Further, the mounting position of the spray nozzle 3 is
As shown in FIG. 5, two rows are arranged in the width direction of
The same operation and effect as described above can be obtained even when the water density area is widened by arrangement of two or more rows.
【００１９】このようにして本実施例では、鋼板１端部
のみを効果的に冷却するようにスプレーノズル３を配置
したので、急峻度αが従来技術の急峻度α＝７〜９％に
比べて大幅に低減できる効果がある。As described above, in the present embodiment, the spray nozzle 3 is disposed so as to effectively cool only the end of the steel sheet 1, so that the steepness α is smaller than that of the prior art. This has the effect of being able to greatly reduce.
【００２０】従って、急峻度αが小さくなるので、耳波
量が低減し、コイルへの巻き取り時に巻き崩れや、巻き
取り不良が解消される効果が大きい。Accordingly, since the steepness α is reduced, the amount of ear waves is reduced, and the effect of eliminating winding collapse and winding failure at the time of winding onto a coil is great.
【００２１】［第２実施例］図４は、第２実施例として
の鋼板端部の冷却装置の説明図である。[Second Embodiment] FIG. 4 is an explanatory view of a cooling device for a steel plate end according to a second embodiment.
【００２２】この実施例では、鋼板端部へ向けて噴射し
た冷却水が、鋼板中央部方向へ流れ込まないようにスク
レーパを配置した構成としたものである。In this embodiment, the scraper is arranged so that the cooling water injected toward the end of the steel sheet does not flow toward the center of the steel sheet.
【００２３】図４において、５は鋼板１を挟んで冷却室
２の上部及び下部から垂直方向に設けられたスクレーパ
で、スプレーノズル３から鋼板１端部へ向けて噴射した
冷却水が、鋼板１中央部方向へ流れ込まないようにスプ
レーノズル３に近接して装着され、鋼板１側の先端は、
できるだけ隙間を小さくし冷却水の漏洩を少なくしてい
る。その他の構成は、前記第１実施例の図１〜２と略同
一となっている。In FIG. 4, reference numeral 5 denotes a scraper provided vertically from the upper and lower portions of the cooling chamber 2 with the steel sheet 1 interposed therebetween. The cooling water injected from the spray nozzle 3 toward the end of the steel sheet 1 Attached close to the spray nozzle 3 so that it does not flow toward the center, the tip of the steel plate 1 side is
The gap is made as small as possible to reduce the leakage of cooling water. Other configurations are substantially the same as those of the first embodiment shown in FIGS.
【００２４】このようにして本実施例では、図４で示す
ように、冷却室２の上部及び下部に配置されたスプレー
ノズル３から鋼板１端部へ向けて冷却水が噴射される
と、噴射された冷却水の一部が鋼板１中央部方向へ流れ
込もうとしても、スクレーパ５によって阻止されるの
で、噴射された冷却水が鋼板１端部方向へ有効に作用
し、鋼板１端部に発生していた耳波量をさらに低減させ
ることができる。その他の作用・効果は前記第１実施例
の作用・効果と略同一である。In this embodiment, as shown in FIG. 4, when the cooling water is sprayed from the spray nozzles 3 arranged at the upper and lower portions of the cooling chamber 2 toward the end of the steel plate 1, the spraying is performed. Even if a part of the cooling water that flows into the central portion of the steel plate 1 is prevented, the injected cooling water effectively acts toward the end of the steel plate 1 because the scraper 5 prevents the injected cooling water. The generated ear wave amount can be further reduced. Other functions and effects are substantially the same as those of the first embodiment.
【００２５】尚、本発明は上記各実施例に限定されず、
本発明の要旨を逸脱しない範囲で各種変更が可能である
ことは言うまでもない。The present invention is not limited to the above embodiments,
It goes without saying that various changes can be made without departing from the spirit of the present invention.
【００２６】[0026]
【発明の効果】以上説明したように、本発明によれば、
鋼板を通過させながら鋼板端部の耳波状部を冷却する冷
却室と、同冷却室内を通過する鋼板の上方部及び下方部
又はそのいずれか一方に設置され、通過する鋼板端部の
耳波状部に向けて冷却水を噴射するスプレーノズルと、
同スプレーノズルに冷却水を供給する冷却水配管とを具
備し、前記スプレーノズルを鋼板の通過方向に対して複
数個並設すると共に、同スプレーノズル設置位置の前記
鋼板の中央部側位置に、冷却水の鋼板中央部側への流れ
を阻止するスクレーパを配設したので、急峻度αが従来
技術の急峻度α＝７〜９％に比べて大幅に低減でき、耳
波量が低減し、コイルへの巻き取り時に巻き崩れや、巻
き取り不良が解消される効果が大きい。As described above , according to the present invention,
Cooling that cools the undulating portion at the end of the steel plate while passing through the steel plate
The upper part and lower part of the cooling room and the steel sheet passing through the cooling room
Or one of them, at the end of the passing steel plate
A spray nozzle for injecting cooling water toward the ear wavy portion,
A cooling water pipe for supplying cooling water to the spray nozzle.
The spray nozzle is installed in the direction of passage of the steel sheet.
In addition to the several installed side by side, the spray nozzle
Cooling water flows to the center of the steel sheet at the center of the steel sheet
Is disposed , a steepness α can be significantly reduced as compared with the steepness α = 7 to 9% of the prior art, the amount of ear waves is reduced, and the coil is unwound when wound on a coil. The effect of eliminating poor winding is great.
【００２７】[0027]
【００２８】[0028]
【００２９】[0029]
【００３０】[0030]
【図１】第１実施例としての鋼板端部の冷却装置の説明
図である。FIG. 1 is an explanatory view of a cooling device for a steel plate end portion as a first embodiment.
【図２】図１のII−II断面矢視図である。FIG. 2 is a sectional view taken along the line II-II in FIG.
【図３】鋼板端部の要部拡大説明図である。FIG. 3 is an enlarged explanatory view of a main part of a steel plate end.
【図４】第２実施例としての鋼板端部の冷却装置の説明
図である。FIG. 4 is an explanatory view of a cooling device for a steel plate end portion as a second embodiment.
【図５】図３の変形例としての鋼板端部の要部拡大説明
図である。FIG. 5 is an enlarged explanatory view of a main part of an end portion of a steel plate as a modified example of FIG. 3;
【図６】鋼板端部の耳波変形を示す斜視図である。FIG. 6 is a perspective view showing ear wave deformation of an end portion of a steel plate.
【図７】図６のVII −VII 矢視図である。FIG. 7 is a view taken in the direction of arrows VII-VII in FIG. 6;
【図８】図６のVIII−VIII矢視図である。FIG. 8 is a view taken in the direction of arrows VIII-VIII in FIG. 6;
【図９】鋼板製造工程の説明図である。FIG. 9 is an explanatory diagram of a steel plate manufacturing process.
１ 鋼板 ２ 冷却室 ３ スプレーノズル ４ 冷却水配管 ５ スクレーパ DESCRIPTION OF SYMBOLS 1 Steel plate 2 Cooling room 3 Spray nozzle 4 Cooling water piping 5 Scraper
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平８−243627（ＪＰ，Ａ) 特開 平５−69024（ＪＰ，Ａ) 特開 平７−80527（ＪＰ，Ａ) 特開 平８−318307（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B21B 45/02 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-243627 (JP, A) JP-A-5-69024 (JP, A) JP-A-7-80527 (JP, A) JP-A 8- 318307 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) B21B 45/02
Claims (1)
部を冷却する冷却室と、同冷却室内を通過する鋼板の上
方部及び下方部又はそのいずれか一方に設置され、通過
する鋼板端部の耳波状部に向けて冷却水を噴射するスプ
レーノズルと、同スプレーノズルに冷却水を供給する冷
却水配管とを具備し、前記スプレーノズルを鋼板の通過
方向に対して複数個並設すると共に、同スプレーノズル
設置位置の前記鋼板の中央部側位置に、冷却水の鋼板中
央部側への流れを阻止するスクレーパを配設したことを
特徴とする鋼板端部の冷却装置。 1. The shape of the edge of the steel sheet while passing through the steel sheet
On the cooling chamber that cools the
It is installed in one side and / or lower part, and passes
That sprays cooling water toward the wavy portion of the steel plate end
The cooling nozzle that supplies cooling water to the nozzle and the spray nozzle
With a water drainage pipe, passing the spray nozzle through a steel plate
Multiple spray nozzles are installed in the same direction
At the center side of the steel plate at the installation position, the cooling water
That a scraper to block the flow to the center
Characteristic cooling device for steel plate end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23191797A JP3276318B2 (en) | 1997-08-28 | 1997-08-28 | Cooling device for steel plate edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23191797A JP3276318B2 (en) | 1997-08-28 | 1997-08-28 | Cooling device for steel plate edge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1157839A JPH1157839A (en) | 1999-03-02 |
| JP3276318B2 true JP3276318B2 (en) | 2002-04-22 |
Family
ID=16931092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23191797A Expired - Fee Related JP3276318B2 (en) | 1997-08-28 | 1997-08-28 | Cooling device for steel plate edge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3276318B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102834193A (en) * | 2010-07-22 | 2012-12-19 | 新日本制铁株式会社 | Steel plate cooling system and steel plate cooling method |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10106273A1 (en) * | 2001-02-01 | 2002-08-08 | Sms Demag Ag | Process for influencing the profile of rolled strip |
| EP2969279B2 (en) | 2013-03-11 | 2024-04-03 | Novelis Inc. | Improving the flatness of a rolled strip |
| CN104107839B (en) * | 2014-06-26 | 2016-06-29 | 武汉钢铁(集团)公司 | Improve method and the device of hot rolled steel plate ultra-rapid cooling uniformity |
| WO2020187419A1 (en) * | 2019-03-21 | 2020-09-24 | Thyssenkrupp Steel Europe Ag | Method for producing a hot-rolled flat steel product with different properties, a correspondingly hot-rolled flat steel product, and a corresponding use |
| CN111515260B (en) * | 2020-05-01 | 2021-12-07 | 陕钢集团产业创新研究院有限公司 | Hot rolled steel plate production system and production process |
-
1997
- 1997-08-28 JP JP23191797A patent/JP3276318B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102834193A (en) * | 2010-07-22 | 2012-12-19 | 新日本制铁株式会社 | Steel plate cooling system and steel plate cooling method |
| CN102834193B (en) * | 2010-07-22 | 2014-12-17 | 新日铁住金株式会社 | Steel plate cooling device and steel plate cooling method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1157839A (en) | 1999-03-02 |
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