JPH0576373B2 - - Google Patents
Info
- Publication number
- JPH0576373B2 JPH0576373B2 JP60130856A JP13085685A JPH0576373B2 JP H0576373 B2 JPH0576373 B2 JP H0576373B2 JP 60130856 A JP60130856 A JP 60130856A JP 13085685 A JP13085685 A JP 13085685A JP H0576373 B2 JPH0576373 B2 JP H0576373B2
- Authority
- JP
- Japan
- Prior art keywords
- strip
- cooling
- water
- guide
- slit
- 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 - Lifetime
Links
- 238000001816 cooling Methods 0.000 claims description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 45
- 239000000498 cooling water Substances 0.000 claims description 31
- 238000007789 sealing Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 description 13
- 239000007924 injection Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000005098 hot rolling Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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 Treatment Of Strip Materials And Filament Materials (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
この発明は、熱間圧延施設におけるストリツプ
冷却装置に関するものであり、更に詳しくは水ジ
エツト冷却方式によるストリツプ冷却装置の改良
に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a strip cooling device in a hot rolling facility, and more particularly to an improvement of a strip cooling device using a water jet cooling method.
＜従来の技術＞
熱間圧延施設において、熱間圧延後の高温のス
トリツプは一定温度まで冷却されてから熱延コイ
ルとして巻き取られる。その冷却・巻き取り装置
を第２図に示す。<Prior Art> In a hot rolling facility, a hot rolled strip is cooled to a certain temperature and then wound into a hot rolled coil. The cooling and winding device is shown in FIG.
すなわち、熱間仕上圧延機１により最終板厚ま
で圧延された高温ストリツプ２はランナウトテー
ブル上に設けた冷却装置３により一定温度に水冷
却されてからコイラ４に巻きとられる。 That is, the high-temperature strip 2 rolled to the final thickness by the hot finishing mill 1 is water-cooled to a constant temperature by the cooling device 3 provided on the runout table, and then wound around the coiler 4.
この冷却装置３は水冷却方式によりストリツプ
を冷却するものであり、従来は第３図に示すよう
に、ストリツプの上方に、ストリツプの搬送方向
に沿つて複数の注水ヘツダ５を互いに並行に配設
すると共に、各注水ヘツダ５のヘアピンノズル６
ａから冷却水を棒状層流に注水する方法が行われ
ていた。 This cooling device 3 cools the strip using a water cooling method, and conventionally, as shown in FIG. 3, a plurality of water injection headers 5 are disposed above the strip in parallel with each other along the conveying direction of the strip. At the same time, the hairpin nozzle 6 of each water injection header 5
A method was used in which cooling water was poured into a rod-shaped laminar flow from a.
しかし、最近になり、第４図に示すように注水
ヘツダ５の長手方向に沿つて細隙状のスリツトを
有するノズル６を設け、このスリツト６から噴出
する板状層流水７を注水するスリツトラミナ冷却
方式が採用されるようになつた。 However, recently, as shown in FIG. 4, a nozzle 6 having a narrow slit is provided along the longitudinal direction of the water injection header 5, and a slit laminar cooling system that injects plate-shaped laminar water 7 spouted from the slit 6 has been developed. method has been adopted.
一方、冷却効率の向上は単に省エネルギにつな
がるだけでなく、ストリツプの冷却速度の向上は
材質の改善に関係するから、冷却能力を更に向上
させる必要がある場合がある。このような要求に
対し、現在は上述したストリツトラミナ冷却方式
よりも更に冷却効果のすぐれた方式として、第５
図に示すように、強制冷却水流８をストリツプ２
面上に吹きつける水ジエツト冷却と呼ばれる方式
が提案されている。 On the other hand, improved cooling efficiency not only leads to energy savings, but also improves the cooling rate of the strip, which is related to improved material quality, so it may be necessary to further improve the cooling capacity. In response to these demands, the fifth method is currently being developed as a method with even better cooling effects than the above-mentioned strip lamina cooling method.
As shown in the figure, the forced cooling water stream 8 is connected to the strip 2.
A method called water jet cooling, which sprays water onto the surface, has been proposed.
この水ジエツト冷却方式は、ストリツプ２に対
面設置したガイド１０ａ，１０ｂとストリツプ２
の間に充満させた冷却水中で、スリツトノズル９
ａ，９ｂより吐出させた低圧板状水８ａ，８ｂを
ストリツプ２に衝突させることおよび衝突後の冷
却水８ａ，８ｂがストリツプ面上を高速流となつ
てガイド１０ａ，１０ｂの流出口へ向つて流れる
噴出流によつて、ストリツプ２を冷却するもので
あつた。 This water jet cooling system consists of guides 10a and 10b installed facing the strip 2 and the strip 2.
Slit nozzle 9 in the cooling water filled during
The low-pressure plate water 8a, 8b discharged from a, 9b collides with the strip 2, and the cooling water 8a, 8b after the collision becomes a high-speed flow on the strip surface toward the outlet of the guides 10a, 10b. The strip 2 was cooled by the flowing jet stream.
＜発明が解決しようとする問題点＞
しかし、上述した方法による水ジエツト冷却方
式は、水ジエツトの冷却性能を維持するには、ス
トリツプ２がガイド１０ａ，１０ｂ間で形成され
る水路に冷却水８ａ，８ｂを常に満水の状態にし
ておく必要があるが、ストリツプ２の走行中のお
どりからガイド１０ａ，１０ｂをストリツプ２に
接近させるには限界があるため、ストリツプ２と
ガイド１０ａ，１０ｂ間の水路を狭くすることが
難しい。また、満水にするために冷却水量を増加
させることは、効率的な冷却手段となり得ない。<Problems to be Solved by the Invention> However, in the water jet cooling method according to the method described above, in order to maintain the cooling performance of the water jet, the strip 2 must inject the cooling water 8a into the channel formed between the guides 10a and 10b. , 8b must be kept full of water at all times, but there is a limit to how close the guides 10a, 10b can be to the strip 2 due to the movement of the strip 2 while the strip 2 is running. difficult to narrow. Furthermore, increasing the amount of cooling water to fill the tank with water cannot be an efficient cooling means.
この発明は、従来の水ジエツト冷却方式におけ
るこのような欠点を解消するためになされたもの
であつて、水ジエツト方式によるストリツプ冷却
装置において、ストリツプとガイド間に形成され
る水路を常に満水状態に維持するストリツプ冷却
装置を提供しようとするものである。 This invention was made in order to eliminate such drawbacks in the conventional water jet cooling method.In a strip cooling device using the water jet method, the water channel formed between the strip and the guide is always kept full of water. The present invention seeks to provide a strip cooling system that maintains
＜問題点を解決するための手段＞
上述の問題点を解決するため、この発明はスト
リツプ冷却装置は走行移送されるストリツプの表
面に臨むスリツト状の噴出口からストリツプ表面
に沿つて伸延し、かつストリツプの表面とで冷却
水室を形成するガイドを有するストリツプ冷却装
置において、前記冷却水室の出口近傍に、シール
用ヘツダを設け、シール用ヘツダからの水圧によ
り冷却水を冷却水室内に充満させることを特徴と
するものである。<Means for Solving the Problems> In order to solve the above-mentioned problems, the present invention provides a strip cooling device that extends along the surface of the strip from a slit-shaped spout facing the surface of the strip being transported, and In a strip cooling device having a guide that forms a cooling water chamber with the surface of the strip, a sealing header is provided near the outlet of the cooling water chamber, and the cooling water chamber is filled with cooling water by water pressure from the sealing header. It is characterized by this.
＜作用＞
このように、冷却水室の出口近傍に、シール用
ヘツダを設け、シール用ヘツダからの水圧により
冷却水を冷却水室内に充満させるから、冷却水量
の多少、ストリツプ・ガイド間のスキマの大小に
かかわらず、ストリツプ・ガイド間の水路に冷却
水を安定して満水状態に維持することが可能であ
る。<Function> In this way, the sealing header is provided near the outlet of the cooling water chamber, and the cooling water is filled into the cooling water chamber by the water pressure from the sealing header, so the amount of cooling water and the gap between the strip and the guide can be adjusted. Regardless of the size of the cooling water, it is possible to stably maintain the water channel between the strip and the guide full of cooling water.
＜実施例＞
次に、図面を用いてこの発明の一実施例につい
て説明する。<Example> Next, an example of the present invention will be described using the drawings.
第１図は実施例の熱間圧延施設におけるストリ
ツプ冷却施設の１セクシヨンの要部縦断面図であ
る。 FIG. 1 is a longitudinal sectional view of a main part of one section of a strip cooling facility in a hot rolling facility according to an embodiment.
このストリツプ冷却施設は、下部ローラ１２ピ
ツチの比較的狭い場合の例を示すものであり、上
述した水ジエツト冷却方式に基づいた一つの上部
注水ヘツダ１１ａに対し、二つの下部注水ヘツダ
１１ｂを対応させて配置したものである。 This strip cooling facility shows an example in which the pitch of the lower rollers 12 is relatively narrow, and two lower water injection headers 11b are made to correspond to one upper water injection header 11a based on the above-mentioned water jet cooling method. This is the layout.
ローラ１２上のストリツプ２に上下相対して上
部注水ヘツダ１１ａ、下部注水ヘツダ１１ｂが設
けられこれらヘツダは冷却水吐出用のスリツトノ
ズル９ａ，９ｂとこれに接続したガイド１０ａ，
１０ｂを有している。上部のガイド１０ａの端に
は本発明に関するシール水用ヘツダ１４が設置さ
れる。 An upper water injection header 11a and a lower water injection header 11b are provided vertically opposite to the strip 2 on the roller 12, and these headers have slit nozzles 9a and 9b for discharging cooling water, and a guide 10a connected to the slit nozzles 9a and 9b.
10b. A seal water header 14 according to the present invention is installed at the end of the upper guide 10a.
また、上部注水ヘツダ１１ａの前後には、スト
リツプ２のおどりをおさえるためのピンチロール
１３が置かれる。 Pinch rolls 13 are placed before and after the upper water injection header 11a to prevent the strip 2 from dancing.
以上のように構成された冷却装置の作用につい
て説明する。 The operation of the cooling device configured as above will be explained.
ポンプ源（図示しない）から供給される冷却水
８ａ，８ｂは注水ヘツダ１１ａ，１１ｂを介して
スリツトノズル９ａ，９ｂを通してストリツプ２
へ注水される。 Cooling water 8a, 8b supplied from a pump source (not shown) passes through water injection headers 11a, 11b and through slit nozzles 9a, 9b to the strip 2.
Water is injected into the area.
このとき、ガイド１０ａ，１０ｂとストリツプ
間に冷却水８ａ，８ｂが充満しており、スリツト
ノズル９ａ，９ｂからの噴流がこの充満している
冷却水８ａ，８ｂを同伴流として、ストリツプ２
へ同時に作用するためストリツプ２への冷却面積
が増大し、冷却性能が飛躍的に増大する。 At this time, the space between the guides 10a, 10b and the strip is filled with cooling water 8a, 8b, and the jet flow from the slit nozzles 9a, 9b carries the filled cooling water 8a, 8b as an entrained flow, and the strip 2
Since the cooling area of the strip 2 is increased, the cooling performance is dramatically increased.
次にスリツトノズル９ａ，９ｂからストリツプ
２へ注水された後の冷却水８ａ，８ｂはガイド１
０ａ，１０ｂとストリツプ間に充満水として滞溜
する一方、ガイド１０ａ，１０ｂの出口に向けて
ストリツプ面上を高速で流れるとともにガイド１
０ａ，１０ｂの出口では流速の非常に大きい噴出
流を形成しここにおいても大きな冷却効果が得ら
れる。 Next, the cooling water 8a, 8b after being injected into the strip 2 from the slit nozzles 9a, 9b is supplied to the guide 1.
0a, 10b and the strip, while flowing at high speed on the strip surface toward the exits of the guides 10a, 10b, the guide 1
At the exits 0a and 10b, a jet stream with a very high flow velocity is formed, and a large cooling effect can be obtained here as well.
これらスリツトノズル９ａ，９ｂからの噴流と
ストリツプ２面上の高速流による２つの冷却効果
はガイド１０ａ，１０ｂとストリツプ２間の水路
が注水後の冷却水８ａ，８ｂで充満されているこ
とが前提であり、この充満水が存在しない状態で
は冷却効果が著しく減少する。かかる目的で設置
されたのがガイド１０ａの出口近傍のシール水用
ヘツダ１４である。 The two cooling effects of the jets from the slit nozzles 9a and 9b and the high-speed flow on the strip 2 surface are based on the premise that the water channels between the guides 10a and 10b and the strip 2 are filled with the cooling water 8a and 8b after being injected. In the absence of this water, the cooling effect is significantly reduced. A seal water header 14 near the outlet of the guide 10a is installed for this purpose.
ヘツダ１４からガイド１０ａ内へ向けて噴射さ
れた水８ｃはガイド１０ａ内で滞溜する冷却水８
ａをガイド１０ａ出口から流出しない方向に、い
わゆるシール水として作用する。これによつて、
スリツトノズル９ａから吐出される冷却水量の多
少にかかわらず、また、ガイド１０ａの出口スキ
マの大きさにかかわらず、ガイド１０ａ内に冷却
水８ａを充満させておくことが可能であり、水ジ
エツト冷却方式における大きな冷却性能を安定し
て維持することができる。なお、下部注水ヘツダ
１１ｂにおけるガイド１０ｂにおいては重力方向
により常に冷却水８ｂがガイド１０ｂ上に貯るた
め前述のごときシール水は不要である。 The water 8c injected from the header 14 into the guide 10a is the cooling water 8 that accumulates inside the guide 10a.
It acts as so-called seal water to prevent the water from flowing out from the outlet of the guide 10a. By this,
Regardless of the amount of cooling water discharged from the slit nozzle 9a and regardless of the size of the exit clearance of the guide 10a, it is possible to fill the guide 10a with the cooling water 8a, and the water jet cooling method is used. It is possible to stably maintain great cooling performance in Note that in the guide 10b of the lower water injection header 11b, the cooling water 8b is always stored on the guide 10b due to the direction of gravity, so the seal water as described above is not necessary.
＜発明の効果＞
以上の説明から明らかなごとく、この発明のス
トリツプ冷却装置においてはガイド端において噴
射するシール水によつてスリツトノズルより注水
した冷却水がガイド端から流出することを抑制
し、これによつてガイド・ストリツプ間で形成さ
れた水路が常に充満され、水ジエツト冷却におけ
るガイド・ストリツプ間の強制冷却を効率的に行
うことができる。<Effects of the Invention> As is clear from the above description, in the strip cooling device of the present invention, the seal water injected at the guide end prevents the cooling water injected from the slit nozzle from flowing out from the guide end. Therefore, the water channel formed between the guide strips is always filled, and forced cooling between the guide strips during water jet cooling can be efficiently performed.
第１図は実施例のストリツプ冷却装置の要部断
面図、第２図は熱間圧延施設におけるストリツプ
の冷却・巻き取り装置の構成を示す要部断面図、
第３図はヘアピンノズル冷却方式によるストリツ
プ冷却装置の斜視図、第４図はスリツトラミナ冷
却方式によるストリツプ冷却装置の斜視図、第５
図は水ジエツト冷却方式における従来のストリツ
プ装置の要部斜視図である。
図面中、２……ストリツプ、３……冷却装置、
５……注水ヘツダ、６ａ……ヘアピンノズル、６
……ノズル（スリツト状ノズル）８ａ，８ｂ……
低圧板状水、９ａ，９ｂ……スリツトノズル、１
０ａ，１０ｂ……ガイド、１１ａ……上部注水ヘ
ツダ、１１ｂ……下部注水ヘツダ、１２……下部
ローラ、１３……ピンチロール、１４……シール
水用ヘツダ。
FIG. 1 is a sectional view of the main parts of the strip cooling device of the embodiment, and FIG. 2 is a sectional view of the main parts showing the configuration of the strip cooling and winding device in a hot rolling facility.
Fig. 3 is a perspective view of a strip cooling device using a hairpin nozzle cooling method, Fig. 4 is a perspective view of a strip cooling device using a slit lamina cooling method, and Fig. 5 is a perspective view of a strip cooling device using a slit lamina cooling method.
The figure is a perspective view of the main parts of a conventional stripping device using a water jet cooling system. In the drawing, 2... strip, 3... cooling device,
5...Water injection header, 6a...Hairpin nozzle, 6
...Nozzles (slit-shaped nozzles) 8a, 8b...
Low pressure plate water, 9a, 9b...slit nozzle, 1
0a, 10b...Guide, 11a...Upper water injection header, 11b...Lower water injection header, 12...Lower roller, 13...Pinch roll, 14...Seal water header.
Claims (1)
ツト状の噴出口からストリツプ表面に沿つて伸延
し、かつストリツプの表面とで冷却水室を形成す
るガイドを有するストリツプ冷却装置において、
前記冷却水室の出口近傍に、シール用ヘツダを設
け、シール用ヘツダからの水圧により冷却水を冷
却水室内に充満させることを特徴とするストリツ
プ冷却装置。1. A strip cooling device having a guide extending along the strip surface from a slit-shaped spout facing the surface of the strip being transported and forming a cooling water chamber with the surface of the strip,
A strip cooling device characterized in that a sealing header is provided near the outlet of the cooling water chamber, and the cooling water chamber is filled with cooling water by water pressure from the sealing header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13085685A JPS61289911A (en) | 1985-06-18 | 1985-06-18 | Strip cooling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13085685A JPS61289911A (en) | 1985-06-18 | 1985-06-18 | Strip cooling apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61289911A JPS61289911A (en) | 1986-12-19 |
| JPH0576373B2 true JPH0576373B2 (en) | 1993-10-22 |
Family
ID=15044292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13085685A Granted JPS61289911A (en) | 1985-06-18 | 1985-06-18 | Strip cooling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61289911A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1011611A6 (en) * | 1997-12-15 | 1999-11-09 | Centre Rech Metallurgique | Cooling device a specific very high power of metal strip in motion. |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5886904A (en) * | 1981-11-18 | 1983-05-24 | Mitsubishi Heavy Ind Ltd | Quick cooler for steel plate in hot rolling installation for thick plate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58170108U (en) * | 1982-05-06 | 1983-11-14 | 株式会社神戸製鋼所 | Strip guide for multi-high rolling mill |
-
1985
- 1985-06-18 JP JP13085685A patent/JPS61289911A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5886904A (en) * | 1981-11-18 | 1983-05-24 | Mitsubishi Heavy Ind Ltd | Quick cooler for steel plate in hot rolling installation for thick plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61289911A (en) | 1986-12-19 |
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