JPS5913573B2 - Cooling equipment for hot rolled steel - Google Patents
Cooling equipment for hot rolled steelInfo
- Publication number
- JPS5913573B2 JPS5913573B2 JP472077A JP472077A JPS5913573B2 JP S5913573 B2 JPS5913573 B2 JP S5913573B2 JP 472077 A JP472077 A JP 472077A JP 472077 A JP472077 A JP 472077A JP S5913573 B2 JPS5913573 B2 JP S5913573B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- hot
- rolled steel
- banks
- nozzle
- 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
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
- B21B45/0203—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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Description
【発明の詳細な説明】 本発明は、熱延鋼材の冷却装置に関する。[Detailed description of the invention] The present invention relates to a cooling device for hot rolled steel.
従来の熱延鋼材の冷却装置、たとえば、ホットストリッ
プミルのホットラン冷却装置を例にとって説明すると、
仕上圧延機を出たストリップは仕上圧延機と巻取機との
間においてホットランテーブル上に設置されたホットス
トリップ冷却装置により、所定の温度まで冷却される。Taking a conventional cooling device for hot-rolled steel, such as a hot run cooling device for a hot strip mill, as an example,
The strip exiting the finishing mill is cooled to a predetermined temperature by a hot strip cooling device installed on a hot run table between the finishing mill and the winder.
一般に冷却装置は、上部と下部とに分かれた複数の冷却
バンクにより構成されており、上部冷却バンクはラミナ
ーフロー冷却法またはスプレー冷却法を採用している。Generally, a cooling device is composed of a plurality of cooling banks divided into an upper part and a lower part, and the upper cooling bank employs a laminar flow cooling method or a spray cooling method.
この上部冷却バンクから落下した水は、ホットランテー
ブル上を走行しているストリップ上面に達した後、スト
リップに乗っていわゆる水乗り現象として、ラインの流
れ方向下流側に向って運ばれ、下流側の冷却バンクの冷
却能力の大きな外乱要因となっている。After the water falling from the upper cooling bank reaches the top of the strip running on the hot run table, it rides on the strip and is carried downstream in the flow direction of the line as a so-called water riding phenomenon. This is a major disturbance factor to the cooling capacity of the cooling bank.
すなわち、上部冷却バンクの複数が注水状態にある場合
を考えると、第一段目の上部冷却バンクで注水された水
は、ストリップに乗ってライン流れ方向下流に向って運
ばれ、第二段目以降の上部冷却バンクの冷却能力を変化
させる。In other words, if we consider a case where multiple upper cooling banks are in the water injection state, the water injected by the upper cooling bank of the first stage is carried downstream in the flow direction of the line on the strip, and is then transferred to the second stage. Change the cooling capacity of the subsequent upper cooling bank.
同様に、第二段目の上部冷却バンクで注水された水は、
三段目以降の上部冷却バンクの冷却能力を変化させ、同
様に以下順次下流側の冷却能力を変化させる。Similarly, the water injected in the upper cooling bank of the second stage is
The cooling capacity of the upper cooling bank from the third stage onward is changed, and the cooling capacity of the downstream side is similarly changed sequentially thereafter.
しかも、ストリップ速度および板幅、板形状などにより
水乗り状況が異なるため、下流側バンクの冷却能力が複
雑に変化する。Moreover, since the riding conditions vary depending on the stripping speed, plate width, plate shape, etc., the cooling capacity of the downstream bank changes in a complicated manner.
従って、このような冷却装置を使用して、仕上圧延後の
スｌ−ＩＪツブの温度を制御する場合、二段目以降の上
部冷却バンクの冷却能力が前述の理由で変化するため、
制御上好ましくないという欠点がある。Therefore, when such a cooling device is used to control the temperature of the sl-IJ tube after finish rolling, the cooling capacity of the upper cooling bank from the second stage onwards changes for the above-mentioned reasons.
This method has the disadvantage of being unfavorable in terms of control.
本発明の目的は、前記従来技術における欠点を解消し、
冷却装置を構成する各上部冷却バンクの冷却能力の変化
を防止し、他の冷却バンクの外乱を受けることなく、常
に一定の冷却能力を有する熱延鋼材の冷却装置を提供す
ることにある。The purpose of the present invention is to eliminate the drawbacks in the prior art,
To provide a cooling device for hot-rolled steel that prevents changes in the cooling capacity of each upper cooling bank constituting the cooling device and always has a constant cooling capacity without being affected by disturbances from other cooling banks.
本発明は、上部冷却バンクの間に水などの高圧流体を噴
出する水切用ノズルを設け、このノズルからの高圧流体
により上流側の冷却液の影響を下流側に受けないように
して前記目的を達成しようとするものである。The present invention provides a draining nozzle that spouts high-pressure fluid such as water between the upper cooling banks, and uses the high-pressure fluid from this nozzle to prevent the downstream side from being affected by the cooling liquid on the upstream side. This is what we are trying to achieve.
以下、本発明の実施例を図面に基づいて説明する。Embodiments of the present invention will be described below based on the drawings.
第１図は、本発明に係る冷却装置をホットストリップミ
ルに適用した概略図である。FIG. 1 is a schematic diagram in which a cooling device according to the present invention is applied to a hot strip mill.
図において、仕上圧延機６で圧延されたストＩＪツブＩ
は、ホットランテーブルローラ８にてテーブル上を矢印
Ａの方向に搬送され、ホットラン上部冷却機構を構成す
る上部冷却バンク１〜５、および各下部冷却機構を構成
する下部冷却バンク１′〜５′により、所定の温度まで
冷却され、前記ホットランテーブルローラ８の端末部に
位置する巻取機９にて巻取られる。In the figure, the steel tube IJ rolled by the finishing mill 6
is conveyed on the table in the direction of arrow A by hot run table rollers 8, and is transported by upper cooling banks 1 to 5 forming the hot run upper cooling mechanism and lower cooling banks 1' to 5' forming each lower cooling mechanism. , and is cooled to a predetermined temperature and wound up by a winding machine 9 located at the end of the hot run table roller 8.
前記各上部冷却バンク１〜５、および各下部冷却バンク
１′〜５′は、それぞれ数本のへラダーから構成され、
各々のヘラグーにはストリップ７に向うノズルが取付け
られている。Each of the upper cooling banks 1 to 5 and each of the lower cooling banks 1' to 5' is each composed of several ladders,
Each hellagu is fitted with a nozzle directed towards the strip 7.
また、前記各上部冷却バンク間には、それぞれ水切用ノ
ズル１０が配設されている。Additionally, a draining nozzle 10 is provided between each of the upper cooling banks.
前記水切用ノズル１０は、第２図に示されるように、ホ
ットランテーブルローラ８の側方やや上方に設けられ、
圧力水をストリップ７の幅方向に噴水できるようにされ
ている。The draining nozzle 10 is provided on the side and slightly above the hot run table roller 8, as shown in FIG.
Pressurized water can be sprayed in the width direction of the strip 7.
この水切用ノズル１０は配管１１を介して、図示しない
圧力水供給装置に連結されている。This draining nozzle 10 is connected to a pressure water supply device (not shown) via a pipe 11.
また、水切用ノズル１０はスｌ−ＩＪツブ７の幅方向に
おいて、ややずれた千鳥状の位置に対向して設けられ、
圧力水をスｌ−ＩＪツブＴの両縁から互いに向い合う方
向に噴出するように構成されている。In addition, the draining nozzles 10 are provided facing each other at slightly shifted staggered positions in the width direction of the slot IJ knob 7,
It is constructed so that pressurized water is ejected from both edges of the sl-IJ tube T in directions facing each other.
このような構成において、上部冷却バンク１〜５から注
水された水は、ストリップ７の上面に乗って下流側へ運
ばれようとするが、下流側に設置された水切用ノズル１
０から噴出される高圧水によりストリップ７の上面の水
はライン外に除去され、水切用ノズル１０より下流に、
それより上流の水が運ばれることはない。In such a configuration, the water injected from the upper cooling banks 1 to 5 rides on the upper surface of the strip 7 and tries to be carried downstream, but the water draining nozzle 1 installed on the downstream side
The water on the top surface of the strip 7 is removed out of the line by the high-pressure water jetted from the drain nozzle 10, and downstream from the draining nozzle 10,
No water is transported further upstream.
このように本実施例においては、水切用ノズル１０が二
段目以降の上部冷却バンクの入側に設置されているため
、上流側の上部冷却バンク１〜４の水は、水切用ノズル
１０にて水切りされ、下流側の上部冷却バンク２〜５の
下方には到達できず、したがって各上部冷却バンク２〜
５の冷却能力は、他の上部冷却バンク１〜４の影響を受
けることがなく、常に一定の冷却能力を保持できる。As described above, in this embodiment, since the draining nozzle 10 is installed on the inlet side of the upper cooling banks from the second stage onwards, the water from the upper cooling banks 1 to 4 on the upstream side is transferred to the draining nozzle 10. water is drained and cannot reach the lower part of the upper cooling banks 2 to 5 on the downstream side, and therefore each upper cooling bank 2 to
The cooling capacity of No. 5 is not affected by the other upper cooling banks 1 to 4, and can always maintain a constant cooling capacity.
このため、仕上圧延後のストＩＪツブＩの温度制御にお
いて、必要冷却バンク数を算定する場合において、他の
冷却バンクによる外乱を考慮せず算定できるため、その
計算が容易であるという利益がある。Therefore, when calculating the required number of cooling banks in temperature control of the strike IJ tube I after finish rolling, there is an advantage that the calculation is easy because it can be calculated without considering disturbances caused by other cooling banks. .
次に第３図は、本発明の他の実施例を示す概略断面図で
、本実施例においては、水切用ノズル１０はストリップ
７の上方位置において、該ストリップ７の幅方向に配設
された給水管１２に設けられている。Next, FIG. 3 is a schematic sectional view showing another embodiment of the present invention. In this embodiment, the draining nozzle 10 is disposed above the strip 7 in the width direction of the strip 7. It is provided in the water supply pipe 12.
この給水管１２は前記実施例と同様に各上部冷却バンク
１〜５の間にそれぞれ設けられている。This water supply pipe 12 is provided between each of the upper cooling banks 1 to 5, as in the previous embodiment.
また、水切用ノズル１０は各上部冷却バンク１〜５の間
において、上流側のバンクタトえば、第３図に示される
ように、第一段目の上部冷却バンク１と第２段目の上部
冷却バンク２との間においては、第一段目の上部冷却バ
ンク１側に向って開口されている。In addition, between the upper cooling banks 1 to 5, the draining nozzle 10 is connected to the upper cooling bank 1 of the first stage and the upper cooling bank of the second stage, as shown in FIG. The space between the cooling bank 2 and the cooling bank 2 is opened toward the first stage upper cooling bank 1 side.
このような構成においても、水切用ノズル１０から噴出
された高圧水により、上流側の上部冷却バンク１〜４に
よるストリップ７の上面の水が下流側の上部冷却バンク
２〜４に侵入するのを防止することができるのは前記実
施例と同様である。Even in this configuration, the high pressure water jetted from the draining nozzle 10 prevents the water on the upper surface of the strip 7 caused by the upper cooling banks 1 to 4 on the upstream side from entering the upper cooling banks 2 to 4 on the downstream side. What can be prevented is the same as in the previous embodiment.
なお、上記各実施例においては、水切用ノズル１０から
高圧水を噴出させて水切りを行なっているが、この高圧
水の代りに他の高圧流体、たとえば高圧空気、あるいは
高圧空気と高圧水との併用したものなどでもよい。In each of the above embodiments, high-pressure water is jetted from the draining nozzle 10 to drain the water, but instead of this high-pressure water, other high-pressure fluid, such as high-pressure air, or a combination of high-pressure air and high-pressure water is used. It may also be used in combination.
しかし、高圧空気の場合には騒音上およびエネルギー的
に不利といえる。However, high-pressure air is disadvantageous in terms of noise and energy.
また、上記各実施例においては各冷却バンク１〜５間の
各々に水切用ノズル１０を設けた例につき説明したが、
本発明はこれに限定されたものではなく、温度別（財）
十重要な位置（たとえば変態温度を通過する位置）の前
後のみ水切用ノズル１０を設けてもよい。Further, in each of the above embodiments, an example was explained in which draining nozzles 10 were provided between each of the cooling banks 1 to 5.
The present invention is not limited to this, and the present invention is not limited to this.
Draining nozzles 10 may be provided only before and after ten important positions (for example, positions passing the transformation temperature).
さらに、ストリップ７の速度が極端に遅い場合、前述の
ように上流側の上部冷却バンク１〜４からの水のみなら
ず、下流側の上部冷却バンク２〜４からの水の侵入も考
えられるが、前記実施例のように水切用ノズル１０を各
冷却バンク１〜５間に設置すれば、前後の上部冷却バン
ク１〜５からの水の侵入による冷却能力の変化を完全に
防止できる。Furthermore, if the speed of the strip 7 is extremely slow, water may enter not only from the upper cooling banks 1 to 4 on the upstream side as described above, but also from the upper cooling banks 2 to 4 on the downstream side. If the draining nozzle 10 is installed between each of the cooling banks 1 to 5 as in the above embodiment, it is possible to completely prevent changes in cooling capacity due to water intrusion from the front and rear upper cooling banks 1 to 5.
また、前記各実施例においては、ホットストリップミル
のホットラン冷却装置につき説明したが、本発明は厚板
の冷却装置等においても適用できるものである。Further, in each of the above embodiments, a hot run cooling device for a hot strip mill has been described, but the present invention can also be applied to a cooling device for thick plates, etc.
上述のように、本発明によれば上部冷却バンク間に水切
用ノズルを設けたから、上部冷却バンクの冷却能力をそ
れより上流側に位置する冷却バンクの冷却液の影響から
保護することができ、その冷却バンクの冷却能力を一定
に保つことが可能であり、従って仕上圧延後の熱延鋼板
の温度制御において、注水すべき冷却バンクの数を決定
する場合に、その数を容易に算出できるという従来にな
い効果がある。As described above, according to the present invention, since the draining nozzle is provided between the upper cooling banks, the cooling capacity of the upper cooling bank can be protected from the influence of the cooling liquid of the cooling bank located upstream thereof. It is possible to keep the cooling capacity of the cooling banks constant, and therefore it is possible to easily calculate the number of cooling banks to be injected with water when controlling the temperature of hot rolled steel sheets after finish rolling. It has unprecedented effects.
第１図は、本発明に係る熱延鋼材の冷却装置の一実施例
を示す概略断面図、第２図は第１図の■−ｎ線に沿った
拡大断面図、第３図は本発明の他の実施例を示す水切用
ノズル部の拡大正面図、第４図は第３図のＩＶ−ＩＶ線
に沿った断面図である。
１〜５・・・・・・上部冷却バンク、６・・・・・・仕
上圧延機、７・・・・・・熱延鋼材としてのストリップ
、１０・・・・・・水切用ノズル。FIG. 1 is a schematic cross-sectional view showing an embodiment of a cooling device for hot-rolled steel according to the present invention, FIG. 2 is an enlarged cross-sectional view taken along the line ■-n in FIG. 1, and FIG. FIG. 4 is an enlarged front view of a draining nozzle portion showing another embodiment of the present invention, and FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3. 1-5...Upper cooling bank, 6...Finishing rolling mill, 7...Strip as hot rolled steel material, 10...Draining nozzle.
Claims (1)
バンクから冷却液を注液して冷却する熱延鋼材の冷却装
置において、前記複数の冷却バンクの間に熱延鋼材に向
って高圧流体を噴出する水切用ノズルを設け、このノズ
ルからの高圧流体の噴出方向を該ノズルより上流側の冷
却液の影響を下流側が受けない方向に配設したことを特
徴とする熱延鋼材の冷却装置。 ２ 前記特許請求の範囲第１項において、前記高圧流体
は高圧水であることを特徴とする熱延鋼材の冷却装置。 ３ 前記特許請求の範囲第１項において、前記水切用ノ
ズルは、熱延鋼材の巾方向の側方に配設され、熱延鋼材
の巾方向を横切るように圧力流体を噴出可能とされたこ
とを特徴とする熱延鋼材の冷却装置。 ４ 前記特許請求の範囲第１項において、前記水切用ノ
ズルは、熱延鋼材の上方位置において該熱延鋼材の巾方
向に配設され、上流側に向って圧力流体を噴出可能とさ
れたことを特徴とする熱延鋼材の冷却装置。[Scope of Claims] 1. In a hot-rolled steel cooling device that cools hot-rolled steel delivered from a finish rolling mill by injecting coolant from a plurality of cooling banks, the hot-rolled steel is cooled between the plurality of cooling banks. A draining nozzle that spouts high-pressure fluid toward the steel material is provided, and the jetting direction of the high-pressure fluid from this nozzle is arranged in a direction in which the downstream side is not affected by the cooling fluid upstream of the nozzle. Cooling equipment for hot rolled steel. 2. The cooling device for hot-rolled steel according to claim 1, wherein the high-pressure fluid is high-pressure water. 3. In claim 1, the draining nozzle is disposed on the side in the width direction of the hot-rolled steel material, and is capable of ejecting pressurized fluid across the width direction of the hot-rolled steel material. A cooling device for hot rolled steel featuring: 4. In claim 1, the draining nozzle is disposed above the hot-rolled steel material in the width direction of the hot-rolled steel material, and is capable of spouting pressurized fluid toward the upstream side. A cooling device for hot rolled steel featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP472077A JPS5913573B2 (en) | 1977-01-19 | 1977-01-19 | Cooling equipment for hot rolled steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP472077A JPS5913573B2 (en) | 1977-01-19 | 1977-01-19 | Cooling equipment for hot rolled steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5389857A JPS5389857A (en) | 1978-08-08 |
| JPS5913573B2 true JPS5913573B2 (en) | 1984-03-30 |
Family
ID=11591710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP472077A Expired JPS5913573B2 (en) | 1977-01-19 | 1977-01-19 | Cooling equipment for hot rolled steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5913573B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6120776U (en) * | 1984-07-06 | 1986-02-06 | トステム株式会社 | lower/lower window |
| WO2011115277A1 (en) * | 2010-03-15 | 2011-09-22 | 新日本製鐵株式会社 | Thick steel plate manufacturing device |
| CN109414740A (en) * | 2016-10-19 | 2019-03-01 | 新日铁住金株式会社 | The cooling means and cooling device of hot rolled steel plate |
| US10512958B2 (en) | 2014-07-10 | 2019-12-24 | Nippon Steel Corporation | Water removing apparatus and water removing method for steel sheet cooling water in hot rolling process |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57106752U (en) * | 1980-12-24 | 1982-07-01 | ||
| JPS6222241Y2 (en) * | 1981-01-30 | 1987-06-06 | ||
| JPS57176102U (en) * | 1981-04-27 | 1982-11-08 | ||
| JPS5916617A (en) * | 1982-07-19 | 1984-01-27 | Nippon Steel Corp | On-line cooling device of thick steel plate |
-
1977
- 1977-01-19 JP JP472077A patent/JPS5913573B2/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6120776U (en) * | 1984-07-06 | 1986-02-06 | トステム株式会社 | lower/lower window |
| WO2011115277A1 (en) * | 2010-03-15 | 2011-09-22 | 新日本製鐵株式会社 | Thick steel plate manufacturing device |
| JP4874437B2 (en) * | 2010-03-15 | 2012-02-15 | 新日本製鐵株式会社 | Thick steel plate manufacturing equipment |
| US10512958B2 (en) | 2014-07-10 | 2019-12-24 | Nippon Steel Corporation | Water removing apparatus and water removing method for steel sheet cooling water in hot rolling process |
| CN109414740A (en) * | 2016-10-19 | 2019-03-01 | 新日铁住金株式会社 | The cooling means and cooling device of hot rolled steel plate |
| US10350659B2 (en) | 2016-10-19 | 2019-07-16 | Nippon Steel & Sumitomo Metal Corporation | Cooling method and cooling apparatus for hot-rolled steel sheet |
| CN109414740B (en) * | 2016-10-19 | 2020-07-31 | 日本制铁株式会社 | Method and apparatus for cooling hot-rolled steel sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5389857A (en) | 1978-08-08 |
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