JPS58197226A - Cooler for steel plate - Google Patents
Cooler for steel plateInfo
- Publication number
- JPS58197226A JPS58197226A JP7924082A JP7924082A JPS58197226A JP S58197226 A JPS58197226 A JP S58197226A JP 7924082 A JP7924082 A JP 7924082A JP 7924082 A JP7924082 A JP 7924082A JP S58197226 A JPS58197226 A JP S58197226A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- cooling
- nozzles
- cooling water
- hot steel
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は鋼板冷却装置に係るものである。[Detailed description of the invention] The present invention relates to a steel plate cooling device.
近年鋼板構造物の軽量化や、グレードアップ化指向に伴
ない、高張力で強靭性を有し、而も溶接性のよい厚鋼板
の需要が高まってきており、現在この特性を満足しうる
厚鋼板製造法として、従来の制御圧延とその後の制（財
）冷却を組み合わせた加工熱処理技術が脚光を浴びてき
ている。In recent years, as the weight of steel plate structures has been reduced and there has been a trend toward upgrading them, there has been an increasing demand for thick steel plates that have high tensile strength, toughness, and good weldability. As a steel sheet manufacturing method, processing heat treatment technology that combines conventional controlled rolling and subsequent controlled cooling has been attracting attention.
即ち、後処理の容易性と生産性向上を目的として行われ
てきた従来の熱鋼板の冷却過程が、現在厚鋼板製造プロ
セスのひとつとして重要視されてきている。That is, the conventional cooling process of hot steel plates, which has been carried out for the purpose of facilitating post-processing and improving productivity, is now considered important as one of the processes for manufacturing thick steel plates.
制御冷却とは、熱鋼板の冷却過程における冷却速度と冷
却温度範囲を制量しながら冷却な行うものであり、鋼板
組織の微細化強化と変態組織強化とＫよって厚鋼板の強
靭化を図る方法である。Controlled cooling is a method of cooling a heated steel plate while controlling the cooling rate and cooling temperature range during the cooling process, and is a method for strengthening the steel plate by refining and strengthening the steel plate structure, strengthening the transformation structure, and making the thick steel plate tougher. It is.
この制御冷却による効果を効果的に行うための冷却設備
には、冷却速度が大きくさらにその制御範囲が広いとい
うことのみにとどまらず、厳密な冷却制御性が要求され
る。In order to effectively achieve the effects of this controlled cooling, cooling equipment is required not only to have a high cooling rate and a wide control range, but also to have strict cooling controllability.
第１図は従来の冷却設備として代表的なヘアピンラきす
設備を示すものであってヘアピンラミナ用ノズル（ａ）
は熱鋼板（ｂｌに層流棒状の冷却水を注水して、同熱鋼
板（ｂｌを冷却するように構成され、冷却効率がよく、
現在熱鋼板の冷却に最も汎く使用されている。Figure 1 shows a typical hairpin lamination equipment as a conventional cooling equipment.
is configured to cool the same thermal steel plate (BL) by injecting laminar flow rod-shaped cooling water into the thermal steel plate (BL), and has good cooling efficiency.
Currently, it is most widely used for cooling hot steel plates.
而して前記ヘアピンラミナ設備の冷却能力の決定因子は
主として冷却水量である。しかし安定した棒状の層流す
碍るためには、ノズル吐出圧は比較的狭い範囲に限られ
るので、冷却水量とそれによる冷却能力範囲も狭いもの
となる。The determining factor of the cooling capacity of the hairpin lamina equipment is mainly the amount of cooling water. However, in order to achieve a stable rod-shaped laminar flow, the nozzle discharge pressure is limited to a relatively narrow range, so the amount of cooling water and the resulting cooling capacity range are also narrow.
従って従来のヘアピンラミナ設備は、制御冷却を６果的
に行なうのに必要とされる高冷却能力を有し、且つその
制御範囲の広い冷却設備に十分に適用できるものとはい
えない。Therefore, the conventional hairpin lamina equipment cannot be said to be sufficiently applicable to cooling equipment that has the high cooling capacity required to perform controlled cooling and has a wide control range.
本発明はこのような実情に鑑みて提案されたもので、熱
鋼板に近接して配設されたヘアピンラミナ用ノズルと、
同ノズルに接続して配設された熱鋼板を囲繞するカバー
とよりなり、前記ノズルからは低圧から高圧まで圧力調
整された冷却水が熱鋼板に吐出されるように構成される
とともに、同ノズル及び前記カバーが熱鋼板に対して外
陣調整されるように構成されたことを特徴とする鋼板冷
却装置に係り、その目的とする処は、熱間厚板圧延設備
において、厚鋼板の材質改善のために行なわれる制御圧
延後の′制御冷症すより効果的に行なうことのできる改
良された熱鋼板冷却装置を供する点にある。The present invention was proposed in view of the above circumstances, and includes a hairpin lamina nozzle disposed close to a hot steel plate,
The cover surrounds a hot steel plate connected to the nozzle, and is configured such that cooling water whose pressure is regulated from low pressure to high pressure is discharged from the nozzle to the hot steel plate, and the nozzle and a steel plate cooling device characterized in that the cover is configured to be externally adjusted with respect to the heated steel plate, and the purpose thereof is to improve the material quality of thick steel plates in hot plate rolling equipment. An object of the present invention is to provide an improved cooling device for hot steel sheets that can more effectively perform controlled cooling after controlled rolling.
本発明においては前記したように、熱間厚板圧延機後方
の熱鋼板搬送ライン上に配設された冷却ゾーンにおいて
、低圧より高圧まで圧力調整された冷却水を吐出するヘ
アピンラミナ用ノズルが熱鋼板に近接して配設され、更
に同ノズルに接続して熱鋼板な囲繞するカバーが配設さ
れているので、前記ノズルからの冷却水の吐出圧が低い
ときは、ヘアピンラミナと同程度の冷却能力を有し、前
記冷却水の吐出圧が高圧になると、前記ノズルから吐出
されて熱鋼板と直接々触する冷却水と、同熱鋼板と前記
カバーとによって区劃された冷却室に充満し、高速で排
出される圧力水によって熱鋼板が強冷されることにより
、冷却速度の制御範囲が拡大される。・・
また本発明においては前記ノズル及び同ノズルに接続し
て配設されたカバーが外陣調整しうるよ５に構成されて
いるので、前記ノズルと熱鋼板との間の距離を調整゛す
ることによって、前記ノズルからの吐出冷却水の熱鋼板
に接触するときの流速と、熱鋼板と前記カバーとの間の
冷却水室の高さを変化させて、冷却水の流速を変化させ
、熱鋼板に対する冷却能力を制御しうるものである。In the present invention, as described above, in the cooling zone disposed on the hot steel plate conveyance line at the rear of the hot plate rolling mill, the hairpin laminar nozzle that discharges cooling water whose pressure has been adjusted from low pressure to high pressure is heated. Since the nozzle is placed close to the steel plate and further connected to the same nozzle, a cover made of heated steel plate is provided, so when the discharge pressure of the cooling water from the nozzle is low, the discharge pressure is about the same as that of the hairpin lamina. When the discharge pressure of the cooling water reaches a high pressure, the cooling water discharged from the nozzle and coming into direct contact with the hot steel plate fills a cooling chamber partitioned by the hot steel plate and the cover. However, since the hot steel plate is strongly cooled by the pressurized water discharged at high speed, the control range of the cooling rate is expanded. ... Also, in the present invention, the nozzle and the cover connected to the nozzle are configured to be able to adjust the outside, so that the distance between the nozzle and the hot steel plate can be adjusted. By changing the flow velocity of the cooling water discharged from the nozzle when it comes into contact with the hot steel plate and the height of the cooling water chamber between the hot steel plate and the cover, the flow rate of the cooling water is changed. It is possible to control the cooling capacity for
以下本発明を図示の実施例について説明する。The present invention will be described below with reference to the illustrated embodiments.
熱間圧延後の熱鋼板（１）の搬送ラインに設けられた冷
却ゾーンにおいて、相隣る前後各−双の搬送用ローラ（
２）（２’）、（２）（２’）間に上下−双のヘアピン
ライナ用ノズル（３） （３’）及び同各ノズルに接続
するヘッダ（４） （４’）が熱鋼板（１）の上下面に
近接して配設され、更に前記各ノズル（３） （３’）
に接続してカバー（５）（５’）が、前記搬送用ローラ
（２） （２’）、（２）（２つ間で熱鋼板（１）を完
全に囲繞するように配設されている。In the cooling zone provided in the conveyance line of the hot steel plate (1) after hot rolling, the adjacent front and rear conveyor rollers (
2) Between (2') and (2) (2'), upper and lower twin hairpin liner nozzles (3) (3') and headers (4) (4') connected to each nozzle are connected to hot steel plates ( 1), and each of the nozzles (3) (3')
Covers (5) (5') are arranged so as to completely surround the hot steel plate (1) between the conveying rollers (2) (2') and (2). There is.
而して前記ノズル（３）（３’）から熱鋼板（１）に対
して冷却水を低圧で吐出する場合、従来のヘアピンラミ
ナと同程度の冷却能力が得られる。（第５図参照）。When cooling water is discharged from the nozzles (3) (3') to the hot steel plate (1) at low pressure, a cooling capacity comparable to that of a conventional hairpin lamina can be obtained. (See Figure 5).
次に前記ノズル（３）（３’）より高圧の冷却水を吐出
する場合、第４図に示すように、熱鋼板（１）と上下カ
ッｔ −（５） （５’）との間に形成された上下の冷
却水室（６）ｒ６’）が冷却水で満たされ、ノズル（３
１（３’）から吐出された冷却水が熱鋼板（１）と直接
接触する個所で大きな冷却効果が得られるとともに、更
に冷却水室（６） （６’）中に満たされ、排出口（７
） （７’）に指向して流れる高速流の圧力水によって
も熱鋼板（１）の冷却が行なわれる。Next, when high-pressure cooling water is discharged from the nozzles (3) (3'), as shown in Fig. 4, between the hot steel plate (1) and the upper and lower cuts t-(5) (5') The formed upper and lower cooling water chambers (6) r6') are filled with cooling water, and the nozzle (3)
A large cooling effect is obtained at the point where the cooling water discharged from the hot steel plate (1) comes into direct contact with the hot steel plate (1). 7
) The hot steel plate (1) is also cooled by the high-speed flow of pressurized water flowing toward (7').
図示の冷却装置によれば、従来のヘアピンラミナのよう
にノズル（３）（３’）からの吐出圧は制限されること
はなく、低圧から高圧までの冷却水の注水が可能となる
。加えて注水後の冷却水も効果的に冷却に作用させるこ
とができるので、冷却能力の制御範囲はヘアピンラミナ
よりも拡大され、さらに効率的な冷却が可能となる。According to the illustrated cooling device, unlike conventional hairpin laminas, the discharge pressure from the nozzles (3) (3') is not limited, and it is possible to inject cooling water from low pressure to high pressure. In addition, since the cooling water after water injection can be effectively used for cooling, the control range of the cooling capacity is expanded compared to the hairpin lamina, and even more efficient cooling becomes possible.
また、冷却能力の制御に当っては、前記したように冷却
水吐出圧を制御することによる方法にとどまらずＪ第５
図に示すよ５に、ノズル（３）（３つとカッ”−（５）
（５つとな外陣調整すること忙よって冷却水室排出口の
高さｂと、熱鋼板（１）とノズル吐出口との間の距離Ｈ
の大きさを変化させ、冷却水室（６）Ｃ６′）における
冷却水流速・を調整して冷却能力め制御をすることが可
能である。In addition, in controlling the cooling capacity, in addition to the method of controlling the cooling water discharge pressure as described above,
As shown in the figure, there are nozzles (3) (3 and 5).
(Since we are busy adjusting the five outer walls, we need to determine the height b of the cooling water chamber outlet and the distance H between the hot steel plate (1) and the nozzle outlet.
It is possible to control the cooling capacity by changing the size of the cooling water and adjusting the cooling water flow rate in the cooling water chamber (6)C6').
図示の冷却装置の冷却能力の下限値は、ヘア゛ビンラミ
ナ設備と同等なものとなるので、さらに冷却能力を小さ
い領域にまで拡げるためには、第６図に示すように、カ
バー（５）（５’）内に熱鋼板（１）Ｋ向けたスプレィ
ノズル（８） （８’）を設置し、このスプレィノズル
（８） （８’）から冷却水を熱鋼板（１）に噴霧する
ことによって、所期の目的が達成される。The lower limit of the cooling capacity of the illustrated cooling device is equivalent to that of the hair web lamina equipment, so in order to further expand the cooling capacity to a smaller area, a cover (5) ( A spray nozzle (8) (8') directed toward the hot steel plate (1) K is installed in the hot steel plate (1) (5'), and cooling water is sprayed onto the hot steel plate (1) from this spray nozzle (8) (8'). , the intended purpose is achieved.
以上本発明を図示の実施例について説明したが、本発明
は前記実施例にだけ局限されるものではなく、本発明の
精神を逸脱しない範囲内で種々の設計の改変を施しうる
ものである。Although the present invention has been described above with reference to the illustrated embodiments, the present invention is not limited to the above-described embodiments, and can be modified in various ways without departing from the spirit of the present invention.
第１図は従来の鋼板冷却装置の斜面図、第２図は本発明
に係る鋼板冷却装置の一実施例を示す斜面図、第５図乃
至第５図はその作動状態を示す縦断側面図、第６図は本
発明の他の実施例を示す縦断側面図である。
（１）・・・熱鋼板
（３）（３’）・・・ヘアピンラミナ用ノズル（５）
（５’）・・・カバー
復代理人 弁理士 開本重文
（７） 外２名
栄３必
７５関Fig. 1 is a perspective view of a conventional steel plate cooling device, Fig. 2 is a perspective view showing an embodiment of the steel plate cooling device according to the present invention, and Figs. FIG. 6 is a longitudinal sectional side view showing another embodiment of the present invention. (1)...Heat steel plate (3) (3')...Nozzle for hairpin lamina (5)
(5')...Covering sub-agent Patent attorney Kaihon Important Cultural Property (7) Other 2 Naei 3 Must 75 Seki
Claims (1)
、同ノズルに接続して配設された熱鋼板を囲繞するカッ
ζ−とよりなり、前記ノズルからは低圧から高圧まで圧
力調整された冷却水が熱鋼板に吐出されるように構成さ
れるとともに、同ノズル及び前記カッζ−が熱鋼板に対
して昇降調整されるように構成されたことを特徴とする
鋼板冷却装置。It consists of a hairpin laminar nozzle placed close to the hot steel plate, and a cup surrounding the hot steel plate that is connected to the nozzle, and the pressure is regulated from low pressure to high pressure from the nozzle. 1. A steel plate cooling device, characterized in that the cooling water is discharged onto a hot steel plate, and the nozzle and the cup ζ- are adjusted to move up and down with respect to the hot steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7924082A JPS58197226A (en) | 1982-05-13 | 1982-05-13 | Cooler for steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7924082A JPS58197226A (en) | 1982-05-13 | 1982-05-13 | Cooler for steel plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58197226A true JPS58197226A (en) | 1983-11-16 |
| JPS6320282B2 JPS6320282B2 (en) | 1988-04-27 |
Family
ID=13684330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7924082A Granted JPS58197226A (en) | 1982-05-13 | 1982-05-13 | Cooler for steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58197226A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6141723A (en) * | 1984-07-31 | 1986-02-28 | Ishikawajima Harima Heavy Ind Co Ltd | Cooling device for metallic plate |
| JP2011011221A (en) * | 2009-06-30 | 2011-01-20 | Sumitomo Metal Ind Ltd | Cooling device for hot-rolled steel sheet and controlling method for the same device, and device and method for manufacturing hot-rolled steel sheet |
| EP2415536B1 (en) | 2009-03-30 | 2015-03-11 | JFE Steel Corporation | Cooling device for hot rolled steel sheet |
-
1982
- 1982-05-13 JP JP7924082A patent/JPS58197226A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6141723A (en) * | 1984-07-31 | 1986-02-28 | Ishikawajima Harima Heavy Ind Co Ltd | Cooling device for metallic plate |
| EP2415536B1 (en) | 2009-03-30 | 2015-03-11 | JFE Steel Corporation | Cooling device for hot rolled steel sheet |
| JP2011011221A (en) * | 2009-06-30 | 2011-01-20 | Sumitomo Metal Ind Ltd | Cooling device for hot-rolled steel sheet and controlling method for the same device, and device and method for manufacturing hot-rolled steel sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6320282B2 (en) | 1988-04-27 |
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