JPS6247084B2 - - Google Patents
Info
- Publication number
- JPS6247084B2 JPS6247084B2 JP53063186A JP6318678A JPS6247084B2 JP S6247084 B2 JPS6247084 B2 JP S6247084B2 JP 53063186 A JP53063186 A JP 53063186A JP 6318678 A JP6318678 A JP 6318678A JP S6247084 B2 JPS6247084 B2 JP S6247084B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- steel plate
- nozzle
- air
- spray water
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 239000007921 spray Substances 0.000 claims description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 19
- 238000005507 spraying Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 10
- 238000007664 blowing Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Landscapes
- Control Of Metal Rolling (AREA)
Description
【発明の詳細な説明】
本発明はコイル巻取温度の制御とストリツプの
洗浄を、従来の水噴霧水に代えて水噴霧と高速空
気の吹付けの両者によつて行なうホツトストリツ
プの冷却および浄洗方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for cooling and cleaning hot strips in which coil winding temperature is controlled and strips are cleaned using both water spray and high-velocity air blowing instead of conventional water spray water. It is about the method.
従来のホツトストリツプミルにおいては非常に
多量の冷却水が使用されている。すなわち、ホツ
トストリツプミルにおいて、ホツトストリツプの
巻取温度の管理のための冷却ならびに洗浄、ロー
ルベアリングの冷却、デスケーリング等のために
多量の水が使用されるが（16〜20m3／圧延ト
ン）、このホツトストリツプの冷却のために使用
される冷却水の使用量はホツトストリツプにおけ
る全使用量の大半を占めている。この冷水を製造
するためには、冷凍機、冷却塔、ポンプ類、各種
配管設備、制御設備、等の大規模な冷却水製造お
よび循環設備が必要になり、用水量も多大とな
り、そのランニングコストも非常に大きなものと
なつている。 Conventional hot strip mills use very large amounts of cooling water. That is, in a hot strip mill, a large amount of water is used for cooling and cleaning to control the winding temperature of the hot strip, cooling of roll bearings, descaling, etc. (16 to 20 m 3 /rolled ton). ), the amount of cooling water used for cooling the hot strip accounts for most of the total amount used in the hot strip. In order to produce this cold water, large-scale cooling water production and circulation equipment such as refrigerators, cooling towers, pumps, various piping equipment, control equipment, etc. are required, and the amount of water required is large, and the running cost is high. is also becoming very large.
本発明は、このホツトストリツプの冷却のため
に必要とされる水の使用量を低減し、少量の水の
使用でも非常に効果的な冷却操作を行なわせるこ
とを目的としてなされたもので、ホツトストリツ
プミルのホツトランテーブル上を流れる鋼板に対
してその上面および／または下面から水を噴霧す
るための噴霧水ノズルを配置したうえ、この噴霧
水ノズルの近傍の位置であつて該噴霧水ノズルに
よつて形成された鋼板上の水膜がまだ存在する位
置に高速空気を吹付けるための空気用ノズルを配
置し、且つ該噴霧水ノズルと該空気用ノズルを前
記の関係を保つて鋼板の流れ方向に間隔を開けな
がら複数組み配置し、各噴霧水ノズルからの噴霧
水によつて鋼板表面に形成された水膜を各空気用
ノズルの高速空気で移動破壊させつつ鋼板を冷却
することを特徴とする。 The present invention was made for the purpose of reducing the amount of water required for cooling the hot strip and allowing highly effective cooling operation to be performed even with the use of a small amount of water. A spray water nozzle for spraying water from the upper and/or lower surface of the steel plate flowing on the hot run table of the lip mill is arranged, and the spray water nozzle is located near the spray water nozzle. An air nozzle for spraying high-speed air is placed in a position where the water film formed by the above still exists on the steel plate, and the spray water nozzle and the air nozzle are kept in the above relationship to spray the steel plate. Multiple sets are arranged at intervals in the flow direction, and the water film formed on the steel plate surface by the spray water from each spray water nozzle is moved and destroyed by the high-speed air of each air nozzle, while cooling the steel plate. Features.
図面に従つて本方法を具体的に説明すると、第
１図は通常のホツトストリツプミルの仕上圧延機
１から出たランアウトテーブル上の鋼板２に対し
て水を噴霧すると同時に高速空気を吹付ける状態
を示している。すなわち、加熱炉３で所定温度に
均熱された鋼板が粗圧延機４で粗圧延され、次い
で仕上圧延機１で仕上圧延されてからコイラー５
に巻取られるまでのランアウトテーブルにおい
て、従来と同様の噴霧水ノズル６から水をスプレ
ーするとともに、多数の空気用ノズル７から高速
空気を吹付け、これによつてスプレー水の量を低
減させながらコイラー５での巻取温度の制御を行
なうと同時に表面洗浄を行なうものである。 To explain this method in detail according to the drawings, Fig. 1 shows a method in which water is sprayed onto a steel plate 2 on a runout table coming out of a finishing mill 1 of an ordinary hot strip mill, and high-speed air is blown at the same time. It shows the state in which it is attached. That is, a steel plate that has been soaked to a predetermined temperature in a heating furnace 3 is roughly rolled in a rough rolling mill 4, then finished rolled in a finishing mill 1, and then passed through a coiler 5.
On the run-out table until it is wound up, water is sprayed from the spray water nozzle 6 similar to the conventional one, and high-speed air is blown from a large number of air nozzles 7, thereby reducing the amount of spray water. The coiling temperature in the coiler 5 is controlled and the surface is cleaned at the same time.
第２図はこのスプレー水と空気吹出処理のため
のフローシートであり、従来と同様の噴霧水ノズ
ル６を従来よりも若干間隔をあけて配置するとと
もに、この噴霧水ノズル６の下流側（鋼板２の流
れに対して）に高速空気吹出用の空気用ノズル７
を配置してある。各空気用ノズル７はヘツダー８
に取付けられ、各ヘツダー８はダンパー９を介し
てメインダクト１０に接続されている。このメイ
ンダクト１０にはフアンフイルターユニツト１１
を経て外気が送り込まれ、主ダンパー１２によつ
てその全体の風量が制御される。すなわち、スプ
レー水の水量やスプレー温度、ストリツプの冷却
条件、ストリツプ速度、ストリツプ厚みなどのパ
ラメーターのほかに、外気条件の変動によつても
冷却空気の吹出量を主ダンパー１２および各ダン
パー９によつて制御する。すなわち、この主ダン
パー１２および各ダンパー９の調節によつて各空
気用ノズル７から吹出す空気量を外気条件や前記
の操業条件の各種パラメーターに応じて調整する
ことによつて、コイラー５に巻取られる直前の材
料温度（鋼の温度）を必要な温度に制御すること
ができる。 Fig. 2 is a flow sheet for this spray water and air blowing process, in which the spray water nozzles 6 similar to the conventional ones are arranged with a slightly wider interval than the conventional ones, and the downstream side of the spray water nozzles 6 (steel plate Air nozzle 7 for high-speed air blowing (for the flow of 2)
are arranged. Each air nozzle 7 has a header 8
Each header 8 is connected to a main duct 10 via a damper 9. A fan filter unit 11 is installed in this main duct 10.
Outside air is sent in through the main damper 12, and the overall air volume is controlled by the main damper 12. That is, in addition to parameters such as the amount of spray water, spray temperature, strip cooling conditions, strip speed, and strip thickness, the amount of cooling air blown out by the main damper 12 and each damper 9 can be adjusted based on changes in outside air conditions. control. That is, by adjusting the amount of air blown out from each air nozzle 7 by adjusting the main damper 12 and each damper 9, the amount of air blown out from the coiler 5 can be adjusted according to the outside air conditions and various parameters of the operating conditions. The temperature of the material (temperature of the steel) just before it is taken can be controlled to the required temperature.
このようにして、噴霧水ノズル６によつて鋼板
２にスプレーしたあと、その下流側において高速
空気を吹付けると、鋼板表面の蒸気が拡散して鋼
板表面の熱伝達が促進されるとともに、鋼板表面
の水膜が破壊されて一層熱伝達が促進される。そ
して、外気を吹付けるために鋼板表面の蒸発面湿
球温度が下がり、蒸発潜熱が連続的に急速に奪わ
れて冷却効果が非常に高くなる。このため従来の
水スプレーのみによる場合に比して噴霧水量を大
巾に低減しても同等の冷却効果を容易に得ること
ができる。 In this way, when the spray water nozzle 6 sprays the steel plate 2 and then blows high-speed air on the downstream side, the steam on the steel plate surface is diffused, heat transfer on the steel plate surface is promoted, and the steel plate The water film on the surface is destroyed, further promoting heat transfer. Since the outside air is blown, the wet bulb temperature of the evaporation surface of the steel sheet surface decreases, and the latent heat of evaporation is rapidly and continuously removed, resulting in a very high cooling effect. Therefore, the same cooling effect can be easily obtained even if the amount of sprayed water is greatly reduced compared to the conventional case using only water spray.
第３図は鋼帯２の下面からもスプレー水と高速
空気を吹付ける状態を示しており、この場合も第
２図と同様にして冷却空気を各空気用ノズル７に
導く。 FIG. 3 shows a state in which spray water and high-speed air are also sprayed from the lower surface of the steel strip 2, and in this case as well, cooling air is guided to each air nozzle 7 in the same manner as in FIG.
本方法を従来のスプレー水のみの冷却方式に比
較すると、そのスプレー水を半分に減らした場
合、約300KWの給気フアンを４基付設するだけ
で、従来法と同等の冷却効果を得ることができる
ので、冷却塔動力は約半分、ポンプ動力も約半分
低減し、用水量も約40％の節約が達成できる。 Comparing this method to a conventional cooling method that uses only spray water, if the amount of spray water is reduced by half, it is possible to obtain the same cooling effect as the conventional method by simply installing four air supply fans of approximately 300 KW. As a result, cooling tower power can be reduced by about half, pump power by about half, and water consumption can be reduced by about 40%.
第１図は本発明法を適用したホツトストリツプ
ミルの工程図、第２図は本発明法の空気処理の系
統図、第３図は本発明法の１つの実施例を示す鋼
板冷却部の断面図である。
１……仕上圧延機、２……鋼板、３……加熱
炉、４……粗圧延機、５……コイラー、６……噴
霧水ノズル、７……空気用ノズル、８……ヘツダ
ー、１１……フアンフイルターユニツト。
Figure 1 is a process diagram of a hot strip mill to which the method of the present invention is applied, Figure 2 is a system diagram of air treatment by the method of the present invention, and Figure 3 is a steel plate cooling section showing one embodiment of the method of the present invention. FIG. 1... Finish rolling mill, 2... Steel plate, 3... Heating furnace, 4... Rough rolling mill, 5... Coiler, 6... Spray water nozzle, 7... Air nozzle, 8... Header, 11 ...Fan filter unit.
Claims (1)
上を流れる鋼板に対して水を噴霧するための噴霧
水ノズルを配置したうえ、この噴霧水ノズルの近
傍の位置であつて該噴霧水ノズルによつて形成さ
れた鋼板上の水膜がまだ存在する位置に高速空気
を吹付けるための空気用ノズルを配置し、且つ該
噴霧水ノズルと該空気用ノズルを前記の関係を保
つて鋼板の流れ方向に間隔を開けながら複数組み
配置し、各噴霧水ノズルからの噴霧水によつて鋼
板表面に形成された水膜を各空気用ノズルの高速
空気で移動破壊させつつ鋼板を冷却することを特
徴とするホツトストリツプの冷却方法。1 A spray water nozzle for spraying water onto the steel plate flowing on the hot run table of the hot strip mill is arranged, and the water is formed at a position near the spray water nozzle by the spray water nozzle. An air nozzle for spraying high-speed air is arranged at a position where a water film still exists on the steel plate, and the spray water nozzle and the air nozzle are spaced apart in the flow direction of the steel plate while maintaining the above relationship. A hot strip characterized in that a plurality of sets of hot strips are arranged while opening and the water film formed on the surface of the steel plate by the spray water from each spray water nozzle is moved and destroyed by the high-speed air of each air nozzle while cooling the steel plate. cooling method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6318678A JPS54153755A (en) | 1978-05-26 | 1978-05-26 | Cooling hot strips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6318678A JPS54153755A (en) | 1978-05-26 | 1978-05-26 | Cooling hot strips |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54153755A JPS54153755A (en) | 1979-12-04 |
| JPS6247084B2 true JPS6247084B2 (en) | 1987-10-06 |
Family
ID=13221948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6318678A Granted JPS54153755A (en) | 1978-05-26 | 1978-05-26 | Cooling hot strips |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54153755A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6368831B1 (en) * | 2017-06-19 | 2018-08-01 | 中外炉工業株式会社 | Metal strip cooling system |
| CN114061262B (en) * | 2021-11-23 | 2023-03-24 | 钢铁研究总院 | Cold control method for channel steel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5230562U (en) * | 1975-08-26 | 1977-03-03 | ||
| JPS5339508B2 (en) * | 1975-04-07 | 1978-10-21 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5655233Y2 (en) * | 1976-09-08 | 1981-12-23 |
-
1978
- 1978-05-26 JP JP6318678A patent/JPS54153755A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5339508B2 (en) * | 1975-04-07 | 1978-10-21 | ||
| JPS5230562U (en) * | 1975-08-26 | 1977-03-03 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54153755A (en) | 1979-12-04 |
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