JPS63101017A - Cooling device for hot steel sheet - Google Patents

Cooling device for hot steel sheet

Info

Publication number
JPS63101017A
JPS63101017A JP24496286A JP24496286A JPS63101017A JP S63101017 A JPS63101017 A JP S63101017A JP 24496286 A JP24496286 A JP 24496286A JP 24496286 A JP24496286 A JP 24496286A JP S63101017 A JPS63101017 A JP S63101017A
Authority
JP
Japan
Prior art keywords
cooling
steel plate
roller
cooling water
steel sheet
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
Application number
JP24496286A
Other languages
Japanese (ja)
Inventor
Norio Takashima
高島 典生
Takashi Sato
孝 佐藤
Hideo Takegawa
竹川 英夫
Shinichiro Muto
武藤 振一郎
Kokichi Sonoyama
園山 光吉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP24496286A priority Critical patent/JPS63101017A/en
Publication of JPS63101017A publication Critical patent/JPS63101017A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02Devices 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
    • B21B45/0203Cooling
    • B21B45/0209Cooling devices, e.g. using gaseous coolants
    • B21B45/0215Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

PURPOSE:To increase the cooling capacity and to uniformize the cooling by installing a dewatering roll facing to a lower roll above a steel sheet, jet nozzles in the front and the behind of the lower roll, and guide covers and side covers between the nozzles and both rolls. CONSTITUTION:A high pressure cooling water jetted onto a steel sheet 5 is guided by guide plates 8 and cools the sheet 5 in both the carrying and reverse directions. Jet nozzles 6 are installed in front and behind of a dewatering roll 7 and a lower roll so that their jetting directions are opposite to each other. The jetted cooling water overflows from an opening 10 so that it falls and is discharged through the guide cover 8 in the upper surface side and falls through nothing in the lower surface side. Therefore, influences by residual cooling water in both the upstream and downstream of a carrying roll 2 and the dewatering roll 7 are eliminated. Installation of side covers 9 eliminates cooling water flow in the width direction. The large cooling capacity and uniform cooling in the width direction for the steel sheet are offered by this device.

Description

【発明の詳細な説明】 「産業上の利用分野」 本発明は、厚板の圧延後オンライン制御冷却。[Detailed description of the invention] "Industrial application field" The present invention provides on-line controlled cooling after rolling of thick plates.

直接焼入プロセスあるいは再加熱熱処理プロセスにおけ
る熱鋼板の冷却、その他熱鋼板熱鋼帯の冷却に供される
高温鋼板の冷却装置に関する。
The present invention relates to a cooling device for high-temperature steel sheets used for cooling hot steel sheets in direct quenching processes or reheating heat treatment processes, and for cooling other hot steel sheets and hot steel strips.

「従来の技術」 近年、熱間厚板圧延設備において、高強度、高靭性の厚
板を製造する目的で圧延後の厚板をオンラインで冷却す
る技術が開発されつつある。
"Prior Art" In recent years, in hot plate rolling equipment, a technique for cooling a rolled plate on-line is being developed for the purpose of producing a plate with high strength and high toughness.

熱鋼板を冷却するに際しては、板巾方向を均一に、板の
上下方向は対称に、所要の冷却速度で冷却することが冷
却装置に要求される。
When cooling a hot steel plate, a cooling device is required to cool the plate uniformly in the width direction and symmetrically in the vertical direction of the plate at a required cooling rate.

当初、熱鋼板の冷却は第6図に示すように圧延機1の出
側において、鋼板5を搬送ローラ2で走行させながら上
部からラミナーフローノズル3で、下部からスプレーノ
ズル4でもって水冷却する方式が一般的であった。
Initially, the heated steel plate is cooled by water at the exit side of the rolling mill 1, as shown in FIG. 6, with the laminar flow nozzle 3 from above and the spray nozzle 4 from the bottom while the steel plate 5 is running on conveyor rollers 2. This method was common.

しかし、同図の方式では、下記に示す問題点があり上記
の要求に答えられない。
However, the method shown in the figure has the following problems and cannot meet the above requirements.

i)鋼板5上をラミナーフローノズル3から供給された
冷却水が滞留水となっておおうが、ラミナーフローノズ
ルから落下する冷却水力<?宿留水に妨害されるので、
冷却能力が低い。
i) Although the cooling water supplied from the laminar flow nozzle 3 remains on the steel plate 5 as stagnant water, the cooling water power falling from the laminar flow nozzle <? Because it is blocked by stagnant water,
Cooling capacity is low.

ii )鋼板上の滞留水は最終的には板中方向の両端部
へ流れるので、両端部の水量密度が板中中央部に較べて
大きくなり、両端部が過冷却される。
ii) Since the water accumulated on the steel plate ultimately flows to both ends in the direction of the plate, the water density at both ends becomes greater than that at the center of the plate, and both ends are supercooled.

1ii)鋼tt下部においては、上向きに噴出された冷
却水が鋼板に衝突後すぐに落下してしまうので滞留水の
ある上部に較べて冷却面積が狭く、結果的に冷却能力が
上部に較べて低い。
1ii) In the lower part of the steel tt, the cooling water jetted upward falls immediately after colliding with the steel plate, so the cooling area is narrower than in the upper part where there is accumulated water, and as a result, the cooling capacity is lower than that in the upper part. low.

iv)更に、下部には搬送ローラがあるので、その分だ
け、冷却面積が狭<1ii)の傾向を助長している。
iv) Furthermore, since there is a conveyance roller in the lower part, the cooling area tends to be narrow<1ii).

V)そもそも上部と下部の冷却方式が異なりかつ、1i
i) 、 iy)の問題点のために、鋼板を上下から対
称に冷却できない。
V) The cooling methods for the upper and lower parts are different in the first place, and 1i
Due to the problems i) and iy), the steel plate cannot be cooled symmetrically from above and below.

以上の欠点を解消するものとして、特開昭58−869
22号公報には第3図、第4図に示すように、スリット
ラミナー冷却水の熱鋼板上への衝突点直前に水切り用ロ
ーラを配設する鋼板の急速冷却装置(第3図)や、さら
にスリット状冷却水を熱鋼板に接近させて、高圧でスプ
レーすると共に、該ノズルと水切り用ローラの間に熱鋼
板の上下面に平行なガイド板を配設(第4図)した装置
が提案されている。
As a solution to the above drawbacks, Japanese Patent Application Laid-Open No. 58-869
As shown in Figures 3 and 4, Publication No. 22 discloses a rapid cooling device for steel plates (Figure 3) in which a draining roller is disposed just before the point of impact of slit laminar cooling water on the heated steel plate; Furthermore, a device has been proposed in which slit-shaped cooling water is brought close to the heated steel plate and sprayed at high pressure, and a guide plate parallel to the upper and lower surfaces of the heated steel plate is arranged between the nozzle and the draining roller (Fig. 4). has been done.

これによって、主に投射された冷却水が1殻送される熱
鋼板上に滞留することに起因した既述の欠点が解消され
るとしている。
It is said that this eliminates the above-mentioned drawbacks mainly caused by the projected cooling water remaining on the hot steel plate that is being fed one shell.

[発明が解決しようとする問題点」 しかるに、第3図、第4図に示されるところの冷却装置
において、第3図においては冷却水は熱鋼板上を巾方向
一様な水膜流として流れるものの水切りローラに衝突し
た後は、冷却水の巾方向への流水を生じ、巾方向の冷却
が不均一となる欠点を有し、また鋼板エツジ部より外側
の、鋼板がない部分は、丁度鋼板の厚さの分だけ開口部
が生じ、そこから冷却水が流出するため、冷却水の巾方
向の流れを助長し、鋼板エツジ部が過冷却されると云う
問題がある。
[Problems to be Solved by the Invention] However, in the cooling device shown in FIGS. 3 and 4, in FIG. After colliding with the draining roller, the cooling water flows in the width direction, which has the disadvantage of uneven cooling in the width direction.Also, the parts outside the edge of the steel plate where there is no steel plate are An opening corresponding to the thickness of the steel plate is formed, and the cooling water flows out from the opening, which promotes the flow of the cooling water in the width direction, resulting in the problem that the edge portion of the steel plate is overcooled.

また、第4図においては、水切りローラに衝突した冷却
水はガイド板の上面にオーバーフローさせるため、中方
向の流れは鋼板中央図では改善されるもののエツジ部で
はやはり巾方向の流れが生じ、更に鋼板両エツジ部より
外側の鋼板のない開口部では、やはり冷却水が流出する
ため鋼板エツジ部が過冷却される問題がある。
In addition, in Fig. 4, the cooling water that collides with the draining roller overflows onto the upper surface of the guide plate, so although the flow in the middle direction is improved in the center view of the steel plate, a flow in the width direction still occurs at the edge part, and In the openings outside both edge portions of the steel plate where there is no steel plate, there is a problem in that the edge portions of the steel plate are overcooled because cooling water still flows out.

「問題点を解決するための手段」、「作用」本発明は畝
上の事情に鑑みなされたもので、その要旨とするところ
は、搬送ローラーに高温鋼板を走行させ、上下面に冷却
水を噴射せしめて冷却する装置において、鋼板の上部に
下ローラーと相対する位置に水切りローラーを配設し、
該水切りローラーと下ローラーの前後に鋼板面への噴射
方向が相対向するジェットノズルを設け、該ノズルと前
記水切りローラー、下ローラー間に鋼板面と平行な上下
のローラー寄りに開口部を有するガイドカバーと該ガイ
ドカバーとローラーの両端部を覆うガイド板を設けると
して、既述の問題点を解消した点にある。
``Means for solving problems'' and ``effects'' The present invention was made in view of the circumstances surrounding ridges, and its gist is that a high-temperature steel plate is run on a conveying roller, and cooling water is applied to the upper and lower surfaces. In a device that cools by spraying water, a draining roller is placed on the top of the steel plate at a position facing the lower roller,
Jet nozzles whose jetting directions toward the steel plate surface face each other are provided before and after the draining roller and the lower roller, and a guide having an opening near the upper and lower rollers parallel to the steel plate surface between the nozzle, the draining roller, and the lower roller. The above-mentioned problems are solved by providing a cover and a guide plate that covers both ends of the guide cover and the roller.

「実施例」 以下、これを図に基づいて詳細に説明する。"Example" This will be explained in detail below based on the drawings.

すなわち、本発明による高温鋼板の冷却装置を第1図、
第2図を用いて説明すると、 鋼板5は、搬送ローラ2によって矢印(A)の方向に搬
送される。スリットジェット状の冷却水供給ノズル及び
ヘッダー6は、鋼板5の搬送方向及び上下方向に沿って
相対向させて適当間隔を距てて配置され、それらのスリ
ットジェットノズルの中間に、下部の搬送ローラ2に相
対して上部に水切りローラ7が配置される。さらに、ス
リット状ノズル6と水切りローラ7及び搬送ローラ2の
間にル送ライン上を通る鋼板5の上下面に平行なガイド
カバー8と、ガイドカバー8及び水切りローラフの端部
に沿ってサイド板9が配置される。
That is, the cooling device for high temperature steel plate according to the present invention is shown in FIG.
To explain using FIG. 2, the steel plate 5 is conveyed by the conveyance roller 2 in the direction of arrow (A). The slit jet-shaped cooling water supply nozzle and the header 6 are arranged facing each other along the conveying direction and the vertical direction of the steel plate 5 at an appropriate distance, and the lower conveying roller A draining roller 7 is disposed at the upper part opposite to 2. Furthermore, a guide cover 8 parallel to the upper and lower surfaces of the steel plate 5 passing on the feed line is provided between the slit-shaped nozzle 6, the draining roller 7, and the conveying roller 2, and a side plate is provided along the edges of the guide cover 8 and the draining roller rough. 9 is placed.

本冷却装置では、鋼板5に噴射された高圧の冷却水はガ
イド板8によって案内されて矢印で示すように、搬送方
向及びその逆方向に鋼板5を冷却しながら流れ、水切り
ローラフに衝突した冷却水はガイドカバー8と水切りロ
ーラフの間の開口部10からオーバーフローし、上面で
は上ガイドカバーの上面を巾方向に流れ、両端部から落
下排出され、下面ではそのまま開口部10から落下排出
される。さらに、鋼板両端部より外側の鋼板の無い部分
では、ちょうど鋼板の厚さの分だけ開口部を生じている
が、スリットジェットノズル6を冷却水噴射方向が相対
向するように設置しているので、搬送ローラ2と水切り
ローラフの間において搬送方向及びその逆方向に噴射さ
れた冷却水が衝突することにより、お互いに搬送ローラ
2及び水切りローラフに対して上流及び下流に残留冷却
水の影響が及ぶことを防止している。
In this cooling device, the high-pressure cooling water injected onto the steel plate 5 is guided by the guide plate 8 and flows in the transport direction and the opposite direction while cooling the steel plate 5, as shown by the arrow, and the cooling water collides with the draining roller. Water overflows from the opening 10 between the guide cover 8 and the draining roller, flows in the width direction on the upper surface of the upper guide cover on the upper surface, falls and is discharged from both ends, and is directly discharged from the opening 10 on the lower surface. Furthermore, in the areas outside both ends of the steel plate where there is no steel plate, openings are created just by the thickness of the steel plate, but since the slit jet nozzles 6 are installed so that the cooling water injection directions are opposite to each other, When the cooling water sprayed in the conveying direction and the opposite direction collides between the conveyance roller 2 and the draining roller ruff, residual cooling water affects the conveying roller 2 and the draining roller both upstream and downstream. This is prevented.

さらに、ガイドカバー8と搬送ローラ2及び水切りロー
ラフの端部に沿ってサイド板9を配置しているので、搬
送ローラ2と水切りローラフの間で衝突した冷却水の巾
方向の流れが規制され、ガイドカバー8と水切りローラ
フの間の開口部10からオーバーフローするため、結局
鋼板5を冷却する冷却水の巾方向流れは生じないことに
なる。
Furthermore, since the side plates 9 are arranged along the edges of the guide cover 8, the conveying roller 2, and the draining roller, the widthwise flow of the cooling water that collides between the conveying roller 2 and the draining roller is regulated. Since the cooling water overflows from the opening 10 between the guide cover 8 and the draining roller, no widthwise flow of cooling water for cooling the steel plate 5 occurs after all.

従って、上記冷却装置を用いて鋼板を冷却することによ
り、上下から対称に板巾方向に均一に大きい冷却能力で
冷却することが可能である。
Therefore, by cooling the steel plate using the above-mentioned cooling device, it is possible to cool the steel plate symmetrically from above and below and uniformly in the width direction of the plate with a large cooling capacity.

尚、本発明ではスリット状のジェットノズルを用いてい
るがこれに限定されるものではな(、ジェットノズルで
あれば良く、例えばキリ穴ジェットノズルでも本発明の
目的は達成できるものである。
Note that although a slit-shaped jet nozzle is used in the present invention, the present invention is not limited to this; any jet nozzle may be used; for example, a drill-hole jet nozzle may also be used to achieve the object of the present invention.

次に本発明の一実施結果を述べると欠配の如くである。Next, the results of implementing the present invention will be described.

第4図に示す従来の冷却装置と第1図、第2図に示す本
発明による冷却装置において、板厚25+sm板幅30
001mの熱間圧延後の厚鋼板を800℃から500℃
まで冷却した。
In the conventional cooling device shown in FIG. 4 and the cooling device according to the present invention shown in FIGS. 1 and 2, the plate thickness is 25+sm and the plate width is 30.
001m thick steel plate after hot rolling from 800℃ to 500℃
cooled down to.

この時の冷却後の厚鋼板の板巾方向の温度分布を第5図
で従来法(a)1本発明(b)に示す。
The temperature distribution in the width direction of the thick steel plate after cooling at this time is shown in FIG. 5 for the conventional method (a) and the present invention (b).

第5図(a)のように、従来法の場合、板両端部では中
方向の流れが生じるため中央部に比べて約50℃程度過
冷却されている。これに対して、同図(b)のように、
本発明の場合、巾方向の流れがほとんど生じないため、
中央部に比べて板両端部の温度低下は約5℃に減少し、
従来の欠点は大幅に改善された。
As shown in FIG. 5(a), in the case of the conventional method, flow in the middle direction occurs at both ends of the plate, so that the plate is supercooled by about 50° C. compared to the center. On the other hand, as shown in the same figure (b),
In the case of the present invention, since almost no flow occurs in the width direction,
The temperature drop at both ends of the plate is reduced to approximately 5℃ compared to the center.
Conventional shortcomings have been greatly improved.

「発明の効果」 以上の如く、本発明による高温鋼板の冷却装置を用いる
ことにより、 (1)鋼板の上下方向において、対称な冷却が大きい冷
却能力でできる。
"Effects of the Invention" As described above, by using the high-temperature steel plate cooling device according to the present invention, (1) symmetrical cooling can be achieved with a large cooling capacity in the vertical direction of the steel plate.

(2)冷却水は、巾方向への流れは生じず、鋼板の搬送
方向及びその逆方向のみに生じるので、板巾方向に対し
て均一な冷却ができる。
(2) Cooling water does not flow in the width direction, but only in the conveyance direction of the steel plate and the opposite direction, so uniform cooling can be achieved in the width direction of the steel plate.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図、第2図は本発明装置正面説明図、平面説明図、
第3図、第4図は従来手段の説明図、第5図は本発明装
置と第4図に示される冷却装置とに於ける鋼板の温度分
布の説明図、第6図は当初の冷却方式の説明図である。 1・・・圧延機、 2・・・搬送ローラ、 3・・・ラ
ミナーフローノズル、 4・・・スプレーノズル、 5
・・・鋼板、 6・・・スリットジェットノズル、 7
・・・水切りローラ、  8・・・ガイドカバー、  
9・・・サイド板、 10・・・開口部。 ズ色4勿 力鰻ら契 (a)          (b) 1色Ωヅ
1 and 2 are front explanatory views and plan explanatory views of the device of the present invention,
3 and 4 are explanatory diagrams of the conventional means, FIG. 5 is an explanatory diagram of the temperature distribution of the steel plate in the device of the present invention and the cooling device shown in FIG. 4, and FIG. 6 is an explanatory diagram of the original cooling method. FIG. DESCRIPTION OF SYMBOLS 1... Rolling machine, 2... Conveyance roller, 3... Laminar flow nozzle, 4... Spray nozzle, 5
...Steel plate, 6...Slit jet nozzle, 7
...Draining roller, 8...Guide cover,
9... Side plate, 10... Opening. Zuiro 4 Mushiki Uragi (a) (b) 1 color Ωㅅ

Claims (1)

【特許請求の範囲】[Claims] 搬送ローラーに高温鋼板を走行させ、上下面に冷却水を
噴射せしめて冷却する装置において、鋼板の上部に下ロ
ーラーと相対する位置に水切りローラーを配設し、該水
切りローラーと下ローラーの前後に鋼板面への噴射方向
が相対向するジェットノズルを設け、該ノズルと前記水
切りローラー、下ローラー間に鋼板面と平行な上下のロ
ーラー寄りに開口部を有するガイドカバーと該ガイドカ
バーとローラーの両端部を覆うガイド板を設けたことを
特徴とする高温鋼板の冷却装置。
In a device that runs a high-temperature steel plate on a conveyance roller and cools it by spraying cooling water on the top and bottom surfaces, a drain roller is disposed on the top of the steel plate at a position facing the lower roller, and a drain roller is installed before and after the drain roller and the lower roller. A guide cover having openings parallel to the steel plate surface near the upper and lower rollers between the nozzle, the draining roller, and the lower roller, and both ends of the guide cover and the roller. 1. A cooling device for high-temperature steel sheets, characterized in that a guide plate is provided to cover the entire surface of the steel plate.
JP24496286A 1986-10-15 1986-10-15 Cooling device for hot steel sheet Pending JPS63101017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24496286A JPS63101017A (en) 1986-10-15 1986-10-15 Cooling device for hot steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24496286A JPS63101017A (en) 1986-10-15 1986-10-15 Cooling device for hot steel sheet

Publications (1)

Publication Number Publication Date
JPS63101017A true JPS63101017A (en) 1988-05-06

Family

ID=17126542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24496286A Pending JPS63101017A (en) 1986-10-15 1986-10-15 Cooling device for hot steel sheet

Country Status (1)

Country Link
JP (1) JPS63101017A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02133285U (en) * 1989-04-07 1990-11-06
EP0875304A2 (en) * 1997-05-02 1998-11-04 Sms Schloemann-Siemag Aktiengesellschaft Method and cooling aggregate for cooling rolling stock at rolling-temperature, especially hot wide strip
WO2014095268A1 (en) * 2012-12-19 2014-06-26 Sms Siemag Ag Device and method for cooling rolled stock
WO2020109073A1 (en) * 2018-11-27 2020-06-04 Sms Group Gmbh Cooling device and cooling system for cooling a refrigerated product

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02133285U (en) * 1989-04-07 1990-11-06
EP0875304A2 (en) * 1997-05-02 1998-11-04 Sms Schloemann-Siemag Aktiengesellschaft Method and cooling aggregate for cooling rolling stock at rolling-temperature, especially hot wide strip
EP0875304A3 (en) * 1997-05-02 2002-01-02 SMS Demag AG Method and cooling aggregate for cooling rolling stock at rolling-temperature, especially hot wide strip
WO2014095268A1 (en) * 2012-12-19 2014-06-26 Sms Siemag Ag Device and method for cooling rolled stock
KR20150082578A (en) * 2012-12-19 2015-07-15 에스엠에스 지마크 악티엔게젤샤프트 Device and method for cooling rolled stock
CN105121047A (en) * 2012-12-19 2015-12-02 Sms集团有限公司 Device and method for cooling rolled stock
JP2015536247A (en) * 2012-12-19 2015-12-21 エス・エム・エス・グループ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング Apparatus and method for cooling rolled material
AU2013361954B2 (en) * 2012-12-19 2016-09-22 Sms Group Gmbh Device and method for cooling rolled stock
RU2612111C2 (en) * 2012-12-19 2017-03-02 Смс Груп Гмбх Device for cooling rolled article
US9643224B2 (en) 2012-12-19 2017-05-09 Sms Group Gmbh Device and method for cooling rolled stock
WO2020109073A1 (en) * 2018-11-27 2020-06-04 Sms Group Gmbh Cooling device and cooling system for cooling a refrigerated product

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