JPS5930415A - Removing method of cooling water - Google Patents
Removing method of cooling waterInfo
- Publication number
- JPS5930415A JPS5930415A JP13796782A JP13796782A JPS5930415A JP S5930415 A JPS5930415 A JP S5930415A JP 13796782 A JP13796782 A JP 13796782A JP 13796782 A JP13796782 A JP 13796782A JP S5930415 A JPS5930415 A JP S5930415A
- Authority
- JP
- Japan
- Prior art keywords
- water
- cooling
- steel plate
- cooling water
- cooled
- 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
Classifications
-
- 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
- B21B45/0269—Cleaning
- B21B45/0275—Cleaning devices
- B21B45/0278—Cleaning devices removing liquids
- B21B45/0281—Cleaning devices removing liquids removing coolants
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は圧延ラインや熱処理ラインの熱鋼板等の水冷装
置における被冷却材上面に滞留する冷却水の除去方法に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for removing cooling water that remains on the upper surface of a material to be cooled in a water cooling device for hot steel plates or the like in a rolling line or a heat treatment line.
一般に圧延ラインや熱処理ラインにおいて熱鋼板を水冷
する場合、スプレーノズル、ラミナーフローノズル、ジ
ェットノズル等から加圧水を被冷却材上下面に噴射して
冷却を行う。Generally, when a hot steel plate is water-cooled in a rolling line or a heat treatment line, cooling is performed by spraying pressurized water onto the upper and lower surfaces of the material to be cooled from a spray nozzle, laminar flow nozzle, jet nozzle, or the like.
鋼板」二面に噴射された冷却水は鋼板と衝突後、鋼板の
幅方向または進行方向等に向って鋼板表面上を流れ、鋼
板端面から下方に落下する。After colliding with the steel plate, the cooling water injected onto the two sides of the steel plate flows over the surface of the steel plate in the width direction or direction of movement of the steel plate, and falls downward from the end face of the steel plate.
このために次のような問題がある。This causes the following problems.
(1) 冷却装置入側では鋼板上面に滞留または流動
する冷却水が冷却開始位置より上流側に流出し、冷却開
始位置における鋼板温度が低下し、所定の位置以前にお
ける鋼板温度が不均一となシ、冷却(2)冷却装置出側
でも同様に鋼板上面に滞留する冷却水が冷却終了位置よ
り下流側に流れるため鋼板が必要以上に冷却され、所要
の材質が得られないかまたは冷却むらのため水冷後鍋板
が変形する等の問題を生ずる。焼入れ処理のように熱鋼
板を塞温近くまで急冷する場合は、冷却装置通過後、鋼
板上面に冷却水が滞留しても変形および材質上の欠陥を
生ずる可能性は少ないが、例えば冷却絡合には問題であ
る。(1) On the inlet side of the cooling system, the cooling water that remains or flows on the top surface of the steel plate flows out to the upstream side of the cooling start position, and the steel plate temperature at the cooling start position decreases, making the steel plate temperature uneven before a predetermined position. Cooling (2) Similarly, on the outlet side of the cooling device, the cooling water that remains on the top surface of the steel plate flows downstream from the cooling end position, so the steel plate is cooled more than necessary, and the desired material quality may not be obtained or cooling may be uneven. This causes problems such as deformation of the pot plate after water cooling. When a hot steel plate is rapidly cooled to a temperature close to occlusion, such as during quenching, even if cooling water remains on the top surface of the steel plate after passing through the cooling device, there is little possibility of deformation or material defects. This is a problem.
上記(1)の問題に対しては従来、第1図に示すようK
、スリットノズルが用いられていた。第1図は冷却装置
の一部縦断面を示し、1は被冷却材(鋼板)、2はテー
ブルロール、3,4Hスフ’V−ノズル、50はスプレ
ー、51は滞留冷却水、30はスリットノズル、31は
水膜である。スリットノズル30は冷却装置入側端に鋼
板進行方向と直角に連続した水膜31を形成し、との水
膜によって鋼板」二面を流れる冷却水をせき止める。Conventionally, to solve the problem (1) above, K
, a slit nozzle was used. Figure 1 shows a partial longitudinal section of the cooling device, where 1 is the material to be cooled (steel plate), 2 is the table roll, 3,4H Suff'V-nozzle, 50 is the spray, 51 is the retained cooling water, 30 is the slit. The nozzle 31 is a water film. The slit nozzle 30 forms a continuous water film 31 perpendicular to the steel plate advancing direction at the inlet end of the cooling device, and the water film dams up the cooling water flowing on the two sides of the steel plate.
スリットノズル30から噴出した水膜31は水の収束度
が高く、高速水流であることから冷却能力が高く、焼入
れ装置のように強冷却を行う場合には冷却装置の一部と
して適当であるが、急激な冷却を要せず緩やかな冷却を
行う場合とか、冷却終了後の鋼板温度を室温以上にする
場合には不都合でおる。すなわち、水膜31によって過
冷却を招来し、所望の温度を得ることができず、所要の
材質を得ることができなくなるという問題がある。The water film 31 ejected from the slit nozzle 30 has a high degree of water convergence and is a high-speed water stream, so it has a high cooling capacity, and is suitable as a part of a cooling device when performing strong cooling such as in a quenching device. This is inconvenient when cooling is performed slowly without requiring rapid cooling, or when the temperature of the steel sheet after cooling is higher than room temperature. That is, there is a problem in that the water film 31 causes supercooling, making it impossible to obtain a desired temperature and making it impossible to obtain a desired material quality.
本発明は、以上に述べた従来の問題点を解決するために
、被冷却材上面に滞留する冷却水を水冷装置人出側端に
おいて簡便かつ効果的に除去する方法を提供し、冷却む
らや変形のない、高品質の製品を生産することを目的と
する。In order to solve the above-mentioned conventional problems, the present invention provides a method for simply and effectively removing cooling water accumulated on the upper surface of a material to be cooled at the exit side end of a water cooling device, thereby reducing uneven cooling. The aim is to produce high quality products without deformation.
本発明は、熱鋼板水冷装置の上面に滞留している冷却水
が、水冷開始位置から鋼板進行方向上流側または/およ
び水冷終了位置から鋼板進行方向下流側に流出すること
を防止するために、水冷装置の人出側の一方または双方
位置で鋼板上面の滞留水を負圧によって吸引し、この吸
引した冷却水をポンプによって強制的に排出することを
特徴としている。In order to prevent the cooling water stagnant on the upper surface of the hot steel plate water cooling device from flowing out from the water cooling start position to the upstream side in the steel plate traveling direction and/or from the water cooling end position to the steel plate traveling direction downstream side, The system is characterized in that the accumulated water on the upper surface of the steel plate is sucked in by negative pressure at one or both positions on the exit side of the water cooling system, and the sucked cooling water is forcibly discharged by a pump.
第2図は、本発明による鋼板上面に滞留する冷却水を除
去する方法を具体化するだめの手段を例示した鋼板水冷
装置の縦断面図である。FIG. 2 is a longitudinal cross-sectional view of a steel sheet water cooling device illustrating means for embodying the method of removing cooling water accumulated on the upper surface of a steel sheet according to the present invention.
加熱された被冷却材1は、移送ローラ2によシ図中矢印
A方向に移動し、水冷装置10内を通過する。水冷装置
内を通過する鋼板1は、水冷装置10内に設けられた噴
水ノズル3.4から噴射する冷却水50によυ、上下面
を冷却される。The heated material 1 to be cooled is moved by the transfer roller 2 in the direction of arrow A in the figure, and passes through the water cooling device 10 . The steel plate 1 passing through the water cooling device 10 is cooled on its upper and lower surfaces by cooling water 50 jetted from a fountain nozzle 3.4 provided in the water cooling device 10.
鋼板上面にノズル3から噴出した冷却水5oけ鋼板1と
衝突後鋼板1の上面に滞留し、ノズル3からの冷却水噴
射量および鋼板1の形状に応じである深さhを有する水
膜51を形成し、その一部が水冷装置10の前方(図中
矢印B、鋼板進行方向上流側)や水冷装置10の後方(
図中矢印C1鋼板進行方向下流側)に向って鋼板1上面
を流れる。この流れを防止するため、図示のように、水
冷装置10の入出n端に、鋼板1上面を鋼板長手方向に
流れる冷却水51を除去する吸引装置20を配設する。A water film 51 that stays on the upper surface of the steel plate 1 after the collision with the steel plate 1 in which 5 o of cooling water is sprayed from the nozzle 3 on the upper surface of the steel plate and has a depth h that depends on the amount of cooling water sprayed from the nozzle 3 and the shape of the steel plate 1. , and a part of it is located in front of the water cooling device 10 (arrow B in the figure, upstream side in the direction of steel sheet movement) and in the rear of the water cooling device 10 (
It flows on the upper surface of the steel plate 1 toward the arrow C1 (downstream side in the steel plate traveling direction) in the figure. In order to prevent this flow, a suction device 20 for removing the cooling water 51 flowing in the longitudinal direction of the steel plate 1 on the upper surface of the steel plate 1 is disposed at the input/output n end of the water cooling device 10, as shown in the figure.
吸引装置、20は負圧を発生するプロワ−21と、配管
22によシ該プロワー吸引口と接続し被冷却鋼板1上面
の滞留水51を吸い上げる開口23を有する貯水室24
とから構成され、さらに、該貯水室24内部には、前記
プロワ−21で発生した負圧により、吸引口23から吸
い」二げた冷却水5工をライン外部へ強制的に排出する
排水ポンプ25が内蔵されている。The suction device 20 includes a blower 21 that generates negative pressure, and a water storage chamber 24 that is connected to the suction port of the blower through piping 22 and has an opening 23 that sucks up the accumulated water 51 on the upper surface of the steel plate 1 to be cooled.
Further, inside the water storage chamber 24, there is a drainage pump 25 for forcibly discharging the cooling water drawn from the suction port 23 to the outside of the line by the negative pressure generated by the blower 21. is built-in.
プロワ−21によって発生する負圧は、鋼板1上面に滞
留する冷却水51の深さh以上まで水を吸引するような
値に設定される。通常−1001uIAq〜−1000
ffAqの間から選定した適当な値によって滞留水を過
不足なく吸引することができる。吸引口23の最下端か
ら鋼板1の表面までの距離は、鋼板1との接触等を考慮
し5118以上離隔することが好ましい。この距離はま
た前記プロワ−の吸引力に応じて増減することができる
。The negative pressure generated by the blower 21 is set to a value that draws water to a depth h or more of the cooling water 51 that remains on the upper surface of the steel plate 1. Normally -1001uIAq ~ -1000
By selecting an appropriate value between ffAq, the accumulated water can be sucked in just the right amount. The distance from the lowest end of the suction port 23 to the surface of the steel plate 1 is preferably 5118 or more, taking into account contact with the steel plate 1 and the like. This distance can also be increased or decreased depending on the suction power of the blower.
吸引装置20は、負圧によって鋼板1上面の滞留水を吸
引するので、鋼板1と接触することなく、また確実に吸
引シ、水切りが完全となる。さらにスリットノズルのよ
うな過冷却を生ずることがない。Since the suction device 20 suctions the accumulated water on the upper surface of the steel plate 1 by using negative pressure, the suction and water draining are reliably completed without contacting the steel plate 1. Furthermore, unlike slit nozzles, supercooling does not occur.
貯水室24内部には排水ポンプ25を備え、プロワ−2
1によって吸引した水を強制的にライン外に排水する。A drainage pump 25 is provided inside the water storage chamber 24, and a drain pump 25 is provided inside the water storage chamber 24.
The water sucked in by step 1 is forcibly drained out of the line.
自然流下等による排水では、シール部の存在による吸引
の信頼性欠除のおそれがあり、また排水能力の確保がむ
づかしいが、本発明では強制排水としたためにこれらの
おそれが全くない。さら′に、強制排水することによシ
、吸引プロワ−の負圧発生能力、吸引各゛量をともに極
めて小さくすることができる。When draining water by gravity, there is a risk that the reliability of suction may be lost due to the presence of a seal, and it is difficult to ensure sufficient drainage capacity, but in the present invention, there is no such fear because the water is forced to drain. Furthermore, by forced drainage, both the negative pressure generation capacity of the suction blower and the amount of suction can be extremely reduced.
排水ポンプ25も水中ポンプ等の簡易な設備を使用する
ことができる。なお、ポンプの排水配管26の途中に逆
止弁27を設け、貯水室24内部の配水配l管26途中
に貯水室24内の大気と連通ずる小さな開口28を貯水
室24内の水位より高い位置に設けることにより、ポン
プ25の起動時の排水が円滑に行なわれるよう考慮が払
われている。As the drainage pump 25, simple equipment such as a submersible pump can be used. In addition, a check valve 27 is provided in the middle of the drain pipe 26 of the pump, and a small opening 28 communicating with the atmosphere in the water storage chamber 24 is provided in the middle of the water distribution pipe 26 inside the water storage chamber 24 so that the water level in the water storage chamber 24 is higher than the water level in the water storage chamber 24. By providing the pump 25 at a suitable position, consideration has been given to ensuring smooth drainage of water when the pump 25 is activated.
本発明は、以上に一例を説明した簡易な装置によって小
容轍の駆動源により容易に経済的に実施することができ
るものである。The present invention can be easily and economically implemented using the simple device, an example of which has been explained above, and a drive source for small ruts.
本発明方法により、液冷−却材上面の冷却水を、確実に
吸引除去できるようになったので、被冷却材の冷却を高
精度に制御することが可能となυ、高品質の鋼板を生産
することが容易となった。By the method of the present invention, the cooling water on the top surface of the liquid cooling material can be reliably sucked and removed, making it possible to control the cooling of the material to be cooled with high precision. It has become easier to produce.
第1図は従来の水冷装置の鋼板上面滞留水流出防止装置
を示す水冷装置の部分断面図、第2図は本発明方法の実
施手段を示す水冷装置の断面図である。
1・・・被冷却材(鋼板)、2・・・デープルロール、
3.4・・・スプレーノズル、10・−・水冷装置、2
゜・・・吸引装置、21・・・プロワ−122・・・配
管、23・・・吸引口、24・・・貯水室、25・・・
ポンプ、26・・・排水配管、27・・・逆止弁、28
・・・開口、3゜・・・スリットノズル、31・・・水
膜、50・・・スプレー、51・・・滞留冷却水FIG. 1 is a partial sectional view of a water cooling device showing a conventional water cooling device for preventing outflow of water accumulated on the upper surface of a steel plate, and FIG. 2 is a sectional view of the water cooling device showing means for implementing the method of the present invention. 1... material to be cooled (steel plate), 2... dimple roll,
3.4...Spray nozzle, 10...Water cooling device, 2
゜... Suction device, 21... Prower 122... Piping, 23... Suction port, 24... Water storage chamber, 25...
Pump, 26... Drain piping, 27... Check valve, 28
... Opening, 3° ... Slit nozzle, 31 ... Water film, 50 ... Spray, 51 ... Remaining cooling water
Claims (1)
水冷装置入側端または/および出側端において該冷却水
を負正により吸引し、該吸引した冷却水をライン外部へ
ポンプによシ強制的に排出することを特徴とする、被冷
却材上面の冷却水除去方法。l To remove the cooling water that remains on the top surface of the hot steel plate,
The upper surface of the material to be cooled, characterized in that the cooling water is sucked by negative and positive at the inlet end and/or the outlet end of the water cooling device, and the sucked cooling water is forcibly discharged to the outside of the line by a pump. cooling water removal method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13796782A JPS5930415A (en) | 1982-08-10 | 1982-08-10 | Removing method of cooling water |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13796782A JPS5930415A (en) | 1982-08-10 | 1982-08-10 | Removing method of cooling water |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5930415A true JPS5930415A (en) | 1984-02-18 |
Family
ID=15210918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13796782A Pending JPS5930415A (en) | 1982-08-10 | 1982-08-10 | Removing method of cooling water |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5930415A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5186018A (en) * | 1990-06-27 | 1993-02-16 | Hoogovens Groep Bv | Cooling system for cooling a moving metal strip |
WO2012043210A1 (en) * | 2010-09-28 | 2012-04-05 | 住友金属工業株式会社 | Hot-rolled steel sheet production apparatus |
CN104525587A (en) * | 2014-12-17 | 2015-04-22 | 江苏金冶冶金设备有限公司 | Through water assembly device |
-
1982
- 1982-08-10 JP JP13796782A patent/JPS5930415A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5186018A (en) * | 1990-06-27 | 1993-02-16 | Hoogovens Groep Bv | Cooling system for cooling a moving metal strip |
WO2012043210A1 (en) * | 2010-09-28 | 2012-04-05 | 住友金属工業株式会社 | Hot-rolled steel sheet production apparatus |
JP5842189B2 (en) * | 2010-09-28 | 2016-01-13 | 新日鐵住金株式会社 | Hot rolled steel plate manufacturing equipment |
CN104525587A (en) * | 2014-12-17 | 2015-04-22 | 江苏金冶冶金设备有限公司 | Through water assembly device |
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