JP3514130B2 - Vertical cooling device and cooling method for steel strip - Google Patents
Vertical cooling device and cooling method for steel stripInfo
- Publication number
- JP3514130B2 JP3514130B2 JP24145298A JP24145298A JP3514130B2 JP 3514130 B2 JP3514130 B2 JP 3514130B2 JP 24145298 A JP24145298 A JP 24145298A JP 24145298 A JP24145298 A JP 24145298A JP 3514130 B2 JP3514130 B2 JP 3514130B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- cooling device
- exhaust port
- steel strip
- 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.)
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Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鋼帯の竪型冷却装
置及び冷却方法に係り、特に、連続溶融亜鉛めっきライ
ンに設けられ、めっき後の鋼帯を冷却するのに有効な技
術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical cooling device for a steel strip and a cooling method, and more particularly to a technique which is provided in a continuous hot dip galvanizing line and is effective for cooling a steel strip after plating.
【０００２】[0002]
【従来の技術】溶融亜鉛めっき鋼板を製造するには、走
行する鋼帯を、めっき浴に連続的に浸漬し、その表面に
めっき金属を付着させてから、垂直上方へ抜き出し、ガ
スワイピングでめっき付着量を調整した後、最終的に冷
却するようになっている。その冷却方法としては、例え
ば、図２に示すように、垂直に走行する鋼帯１を竪型の
ボックス２内に導き、該ボックス２内で水ミスト３を吹
き付けるのが一般的である。従って、該ボックス２に
は、水ミスト３を噴射するスプレー・ノズル４が、多段
に且つ鋼帯幅方向に列をなして多数個設けられている。
また、水ミスト３がボックス２内に溜らないように、排
気口５を介して排気手段（通常、排風ブロア）も設けら
れている。2. Description of the Related Art In order to manufacture a hot-dip galvanized steel sheet, a running steel strip is continuously immersed in a plating bath, a plating metal is adhered to the surface of the steel strip, which is then drawn vertically upward and plated by gas wiping. After adjusting the adhesion amount, it is finally cooled. As a cooling method, for example, as shown in FIG. 2, a steel strip 1 running vertically is generally guided into a vertical box 2, and a water mist 3 is sprayed in the box 2. Therefore, the box 2 is provided with a large number of spray nozzles 4 for injecting the water mist 3 in multiple stages in a row in the width direction of the steel strip.
Further, an exhaust means (usually an exhaust blower) is also provided through the exhaust port 5 so that the water mist 3 does not collect in the box 2.
【０００３】ところで、かかる冷却装置を用いての冷却
が適切に行われないと、めっき表面のスパングル（縞模
様）の大きさが不均一になり、外観が悪い溶融亜鉛鋼板
となったり、めっき層の合金化が安定せず、パウダリン
グ不良等が発生する。そこで、特公昭５３−４３８９２
号公報は、「ノズル径０．５ｍｍ以上、スプレーされた
水ミストの拡がり角度９５度以上のノズルを用い、水ミ
ストの噴射量と排風量をある値に制限した条件で、冷却
する」技術を提案している。これによって、めっき鋼板
１の表面を美麗にできるばかりでなく、ボックス２から
の水ミスト３や水滴８の漏れを防止できるとしている。
なお、この水漏れが起きると、作業環境を悪化し、円滑
なめっき操業ができなくなる。また、電気配線等の設備
保全上の問題も生じ、その結果、生産性が低下するとい
う問題が生じていた。If cooling is not performed properly using such a cooling device, the size of spangles (striped pattern) on the plating surface becomes non-uniform, resulting in a hot-dip galvanized steel sheet having a poor appearance or a plating layer. The alloying of is unstable and powdering failure occurs. Therefore, Japanese Patent Publication No. 53-43892
Japanese Patent Laid-Open Publication No. 2003-242359 discloses a technique of "using a nozzle having a nozzle diameter of 0.5 mm or more and a sprayed water mist having a spread angle of 95 degrees or more, and cooling the water mist under a condition in which an injection amount and an exhaust air amount are limited to a certain value". is suggesting. According to this, not only the surface of the plated steel sheet 1 can be made beautiful, but also the leakage of the water mist 3 and the water droplets 8 from the box 2 can be prevented.
When this water leakage occurs, the working environment is deteriorated and smooth plating operation cannot be performed. Further, there is a problem in facility maintenance such as electric wiring, and as a result, there is a problem in that productivity is reduced.
【０００４】さらに、特公平５−４８２８５号公報は、
めっきラインではなく、鋼帯の連続熱処理ラインの竪型
冷却装置において、同様な冷却装置を設け、走行する鋼
帯を冷却するにあたり、前記ボックスの下部開口部に水
漏れをシールするロールを設けることを開示している。
しかしながら、本発明者が関わるめっきラインでは、冷
却のために必要な水量が前記の従来技術で使用する量よ
りも非常に多く、実際には、ボックスからの水滴の漏れ
は止まらないのが現状である。また、特公平５−４８２
８５号公報記載の技術では、鋼板表面に疵が生成する等
の別の問題もあった。Further, Japanese Patent Publication No. 5-48285 discloses
A vertical cooling device for a continuous heat treatment line for steel strips, not a plating line, is provided with a similar cooling device, and a roll for sealing water leakage is provided at the lower opening of the box when cooling a traveling steel strip. Is disclosed.
However, in the plating line to which the present inventor is involved, the amount of water required for cooling is much larger than the amount used in the above-mentioned prior art, and in reality, the leakage of water droplets from the box does not stop. is there. In addition, Japanese Patent Publication 5-482
In the technique described in Japanese Patent Publication No. 85, there is another problem that a flaw is generated on the surface of the steel sheet.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、かかる事情
に鑑み、鋼板の外観等に影響を与えずに、冷却のために
必要な水量が従来より増加しても、水漏れを抑制可能な
鋼帯の縦型冷却装置及び冷却方法を提供することを目的
としている。In view of the above circumstances, the present invention can suppress water leakage without affecting the appearance of a steel sheet and the like, even if the amount of water required for cooling is larger than in the past. An object of the present invention is to provide a vertical cooling device for a steel strip and a cooling method.
【０００６】[0006]
【課題を解決するための手段】発明者は、上記目的を達
成するため、竪型冷却装置の下部開口からの水漏れ対策
を種々検討し、その成果を本発明として具現化した。In order to achieve the above-mentioned object, the inventor studied various measures against water leakage from the lower opening of the vertical cooling device, and realized the result as the present invention.
【０００７】すなわち、本発明は、上下に開口を有し、
内部を鋼帯が上向き又は下向きに走行するボックスと、
該鋼帯に水ミストを噴射する多段、且つ鋼帯幅方向に多
数個配設したスプレー・ノズルと、下側開口の周囲に設
けた内部に気体を送る給気パッドと、該ボックス内の排
気を行う排気口と、水受けパンとを備えた鋼帯の竪型冷
却装置において、前記給気パッドを、高圧気体の送気用
と低圧気体の送気用の２種類とし、上側に低圧用、下側
に高圧用を隣接して２段に配置したことを特徴とする鋼
帯の竪型冷却装置である。That is, the present invention has openings at the top and bottom,
A box in which the steel strip travels upward or downward,
Multi-stage spray nozzles for injecting water mist on the steel strip, and a large number of spray nozzles arranged in the width direction of the steel strip, an air supply pad provided around the lower opening for sending gas to the inside, and an exhaust gas in the box In a steel strip vertical cooling device equipped with an exhaust port for carrying out the above and a water receiving pan, the air supply pad is of two types, one for high pressure gas supply and the other for low pressure gas supply The vertical cooling device for steel strips is characterized in that the high-pressure type is adjacently arranged in two stages on the lower side.
【０００８】また、本発明は、前記排気口をボックスの
側壁に２段に離隔して設け、その下方の排気口の中心軸
の位置を、水受けパンの側壁に面する鋼板表面と該水受
けパン側壁間距離αの３〜１２倍に相当する高さだけ、
該水受けパンの側壁上端より高くしたり、あるいは前記
下方の排気口の先端と鋼板表面間の距離を、水受けパン
の側壁に面する鋼板表面と該水受けパン側壁間距離の１
〜２０倍とすることを特徴とする鋼帯の竪型冷却装置で
ある。Further, according to the present invention, the exhaust port is provided on the side wall of the box so as to be separated in two steps, and the position of the central axis of the exhaust port below the exhaust port is the steel plate surface facing the side wall of the water receiving pan and the water. A height corresponding to 3 to 12 times the distance α between the side walls of the receiving pan,
The height is higher than the upper end of the side wall of the water receiving pan, or the distance between the tip of the lower exhaust port and the steel plate surface is set to 1 of the distance between the steel plate surface facing the side wall of the water receiving pan and the water receiving pan side wall.
It is a vertical cooling device for a steel strip, which is characterized by increasing the time by 20 times.
【０００９】[0009]
【００１０】[0010]
【００１１】 全排気水量（ｙ）≧ 全給水量（ａ）＋全給気量（ｂ） ここで、単位は、いずれもｍ3 ／ｍｉｎである。Total exhaust water amount (y) ≧ total water supply amount (a) + total air supply amount (b) Here, all units are m 3 / min.
【００１２】本発明によれば、ボックスの下方に水ミス
ト又は水滴が溜るようになっても、それらは前記上昇気
流によって上方に移動し、排気口から円滑に除かれるよ
うになる。その結果、下方の開口からの水漏れは防止で
きるようになり、作業環境や設備保全上の問題が解消さ
れる。According to the present invention, even if water mist or water drops accumulate below the box, they move upward due to the ascending airflow and are smoothly removed from the exhaust port. As a result, it is possible to prevent water leakage from the lower opening, and solve problems in the work environment and facility maintenance.
【００１３】[0013]
【発明の実施の形態】以下、発明をなすに至った経緯も
含め、図面を参照して、本発明の実施の形態を説明す
る。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings, including the background of the invention.
【００１４】まず、発明者は、水漏れの防止を図るた
め、図３に示す実験装置を試作した。それは、透明な円
筒９と、該円筒９内に散水するシャワー１０と、円筒９
の下方から空気を上向きに供給する給気ブロア１１と、
円筒９内の状態を観察するビデオ１２とからなってい
る。そして、この装置を用い、実際の冷却装置に使用す
る冷却媒体が水ミスト３でなく、大量の水１３を噴射し
ても水漏れが防止できる条件を求めることにした。First, the inventor prototyped the experimental device shown in FIG. 3 in order to prevent water leakage. It is a transparent cylinder 9, a shower 10 spraying water into the cylinder 9, and a cylinder 9
An air supply blower 11 that supplies air upward from below,
And a video 12 for observing the inside of the cylinder 9. Then, using this device, the cooling medium used for the actual cooling device is not the water mist 3 but the condition that water leakage can be prevented even if a large amount of water 13 is injected is determined.
【００１５】その実験結果の一例を表１に示す。表１よ
り、下方からの供給する空気の上向き流速が２０ｍ／ｓ
ｅｃ以上にすると、かなりの量の水１３が落下してきて
も吹き上げて、円筒９下部の開口１４からは漏れないこ
とがわかる。Table 1 shows an example of the experimental results. From Table 1, the upward flow velocity of the air supplied from below is 20 m / s.
It can be seen that if it is ec or more, even if a considerable amount of water 13 falls, it is blown up and does not leak from the opening 14 at the bottom of the cylinder 9.
【００１６】[0016]
【表１】 [Table 1]
【００１７】従って、発明者は、この知見をさらに具体
的な防止技術に発展させることに鋭意努力し、下記のよ
うな冷却装置及び冷却方法としたのである。Therefore, the inventor has made diligent efforts to develop this knowledge into a more concrete prevention technique, and has made the following cooling device and cooling method.
【００１８】すなわち、本発明に係る竪型冷却装置は、
上下に開口を有し、内部を鋼帯が上向き又は下向きに走
行するボックスと、該鋼帯に水ミストを噴射する多段、
且つ鋼帯幅方向に多数個配設したスプレー・ノズルと、
下側開口の周囲に設けた内部に気体を送る給気パッド
と、該ボックス内の排気を行う排気口と、水受けパンと
を備えた前記図２の従来からある竪型冷却装置を改良し
たものである。その一例を図１に示す。That is, the vertical cooling device according to the present invention is
A box having upper and lower openings, in which the steel strip travels upward or downward, and a multistage for injecting water mist onto the steel strip,
And spray nozzles arranged in the width direction of the steel strip,
The conventional vertical cooling device of FIG. 2 provided with an air supply pad provided around the lower opening for sending gas into the interior, an exhaust port for exhausting the inside of the box, and a water receiving pan is improved. It is a thing. One example is shown in FIG.
【００１９】それは、図１から明らかなように、前記し
た給気パッドを、高圧気体の送気用１５と低圧気体１６
の送気用の２種類とし、上側に低圧用、下側に高圧用を
隣接して２段に配置した点に特徴がある。給気パッドを
このようにすることで、ボックス２の下方から供給され
た気体１７（通常、空気）の上向き流速を、２０ｍ／ｓ
ｅｃ以上にできるばかりでなく、設備の効率化が達成で
きた。つまり、従来のように、一段の給気パッド７のみ
で同等の流速を得ようとすると、給気ブロア１１が大型
になり、費用が嵩むのを防止したのである。As is apparent from FIG. 1, the above-mentioned air supply pad is used for supplying high-pressure gas 15 and low-pressure gas 16
It is characterized in that there are two types for air supply, that is, low pressure for the upper side and high pressure for the lower side are adjacently arranged in two stages. By setting the air supply pad in this manner, the upward flow velocity of the gas 17 (usually air) supplied from below the box 2 is set to 20 m / s.
In addition to being able to do more than ec, we were able to achieve the efficiency of the equipment. In other words, as in the conventional case, when it is attempted to obtain the same flow velocity with only one stage of the air supply pad 7, the air supply blower 11 becomes large in size and the cost is prevented from increasing.
【００２０】二段の給気パッドとした理由は、以下の通
りである。The reason for using the two-stage air supply pad is as follows.
【００２１】発明者が、図４（ａ）に示す従来の給気パ
ッドから吹き出される気体の状態を調査したところ、該
気体は上昇流と下降流に分かれていた。また、水受けパ
ン６と給気パッド７との隙間から、前記上昇流に引きず
られて空気２０が吸い込まれていることも知った。そこ
で、発明者は、下降流をできるだけ少なくし、上昇流の
増加を図るため、従来の給気パッド７の上に，図４
（ｂ）に示すような低圧気体を供給するための給気パッ
ドを別途設けるようにした。しかも、新設する給気パッ
ドは低圧気体用１６なので、設備費が少なくて良い利点
がある。When the inventor investigated the state of the gas blown from the conventional air supply pad shown in FIG. 4 (a), the gas was divided into an upflow and a downflow. It was also found that the air 20 was sucked by the upward flow from the gap between the water receiving pan 6 and the air supply pad 7. Therefore, in order to reduce the descending flow as much as possible and increase the ascending flow, the inventor of the present invention has the structure shown in FIG.
An air supply pad for supplying low-pressure gas as shown in (b) is separately provided. Moreover, since the newly provided air supply pad 16 is for low pressure gas, there is an advantage that the facility cost is low.
【００２２】また、発明者は、ボックス２の下方に滞留
する水ミスト３又は水滴８のボックス外への排出につい
ても工夫を凝らした。そして、その結果を本発明として
具現化した。つまり、排気口５をボックス２の側壁に２
段に離隔して設け、その下方の排気口１７は、その中心
軸の位置を、水受けパンの側壁に面する鋼板表面と該水
受けパン側壁間距離αの３〜１２倍に相当する高さだ
け、該水受けパンの側壁上端より高くしたのである。こ
れによって、従来ボックス２の下部に溜った水ミスト３
又は水滴８の殆どの量がボックス２の外に円滑に除去さ
れるようになった。１２倍超えでは、速度が遅すぎて水
滴が浮遊状態せず、排出が円滑に行えないからであり、
３倍未満では、気体のエネルギーが無駄になるからであ
る。The inventor also devised a method for discharging the water mist 3 or the water droplets 8 staying below the box 2 out of the box. And the result was embodied as the present invention. That is, the exhaust port 5 is attached to the side wall of the box 2.
The exhaust port 17 is provided in a stepped manner, and the position of the central axis of the exhaust port 17 below the height is equivalent to 3 to 12 times the distance α between the steel plate surface facing the side wall of the water receiving pan and the side wall of the water receiving pan. That is, the height is higher than the upper end of the side wall of the water receiving pan. As a result, the water mist 3 collected in the lower part of the conventional box 2
Alternatively, most of the water droplets 8 are smoothly removed to the outside of the box 2. If it exceeds 12 times, the speed is too slow and the water droplets do not float, and the discharge cannot be performed smoothly.
This is because the energy of gas is wasted if the amount is less than 3 times.
【００２３】さらに、発明者は、この下方の排気口１７
と鋼板１表面間の距離（図６に記号Ｄで示す）を、水受
けパン６の側壁１８における鋼板表面と該水受けパン側
壁間距離の１〜２０倍とすることで、水漏れの防止を一
層効果的にした。１倍未満では、鋼板の振動や反り等で
互いに接触して傷つく危険があり、２０倍を超えると、
排気効率が低下するからである。Further, the inventor has found that the exhaust port 17 under this
The distance between the surface of the steel plate 1 and the surface of the steel plate 1 (indicated by symbol D in FIG. 6) is set to 1 to 20 times the distance between the surface of the steel plate on the side wall 18 of the water receiving pan 6 and the side wall of the water receiving pan to prevent water leakage. Was made more effective. If it is less than 1 time, there is a risk that the steel plates may come into contact with each other due to vibration, warpage, etc., and if it exceeds 20 times,
This is because the exhaust efficiency decreases.
【００２４】なお、本発明に係る冷却方法については、
以下の実施例において、具体的に説明する。Regarding the cooling method according to the present invention,
A specific description will be given in the following examples.
【００２５】[0025]
【実施例】図５に示す本発明に係る縦型冷却装置を用
い、連続溶融亜鉛めっきラインで鋼帯を連続的に冷却し
た。使用した鋼帯１は、厚み１．０ｍｍであり、その表
面に施されためっき層を合金化する炉の出側に、上記冷
却装置を配置してある。なお、該冷却装置は、水スプレ
ー方式のノズル４を備えたものである。EXAMPLE A steel strip was continuously cooled in a continuous hot dip galvanizing line using the vertical cooling device according to the present invention shown in FIG. The steel strip 1 used has a thickness of 1.0 mm, and the cooling device is arranged on the outlet side of the furnace for alloying the plating layer applied to the surface thereof. The cooling device is equipped with a water spray type nozzle 4.
【００２６】まず、合金化処理の施され、温度５００℃
の鋼帯１が、１３０ｍ／ｍｉｎの速度で冷却装置のボッ
クス２下部の開口１４から装入され、上部の開口２１か
ら抜け出ている。その間、ボックス２内では、前記した
各ノズル４から水１３が合計で６０ｍ3 ／ｈｒの流量で
鋼帯面に噴射される。また、同時に、ボックス２下部に
設けた２段の給気パッド１５、１６からは、給気ブロア
（図示せず）を介して合計１７００Ｎｍ3 ／ｍｉｎの空
気が送風されている。この送風によって生じた上昇気体
の流速は、３０ｍ／ｓｅｃであった。First, alloying treatment is performed, and the temperature is 500 ° C.
The steel strip 1 is loaded at a speed of 130 m / min from the opening 14 in the lower part of the box 2 of the cooling device, and comes out from the opening 21 in the upper part. Meanwhile, in the box 2, the water 13 is jetted from the nozzles 4 to the steel strip surface at a total flow rate of 60 m 3 / hr. At the same time, a total of 1700 Nm 3 / min of air is blown from the two-stage air supply pads 15 and 16 provided in the lower part of the box 2 via an air supply blower (not shown). The flow velocity of the ascending gas generated by this blowing was 30 m / sec.
【００２７】なお、この場合、ボックス２内の給排気水
量は、下記式を満足するように調整してある。水漏れが
起きず、円滑な冷却が実施できるからである（図７参
照）。
全排気水量（ｙ）≧ 全給水量（ａ）＋全給気量（ｂ）
ここで、単位は、いずれもｍ3 ／ｍｉｎである。In this case, the amount of supplied / exhausted water in the box 2 is adjusted so as to satisfy the following equation. This is because water leakage does not occur and smooth cooling can be performed (see FIG. 7). Total exhaust water amount (y) ≧ total water supply amount (a) + total air supply amount (b) Here, all units are m 3 / min.
【００２８】上記の冷却によって、鋼帯１の温度は、冷
却装置の出口で３２０℃となっていた。しかも、ボック
ス２下部の開口からは、操業中に水漏れが皆無であり、
本発明が有効であることがわかった。By the above cooling, the temperature of the steel strip 1 was 320 ° C. at the outlet of the cooling device. Moreover, no water leaks from the opening at the bottom of the box 2 during operation,
The present invention has been found to be effective.
【００２９】なお、上記実施例は、合金化溶融亜鉛めっ
き鋼板を冷却したものであったが、本発明の適用対象は
それに限らず、鋼帯の連続熱処理ライン等にも利用でき
る。In the above example, the alloyed hot-dip galvanized steel sheet was cooled, but the application of the present invention is not limited to this, and it can also be used in a continuous heat treatment line for steel strips and the like.
【００３０】[0030]
【発明の効果】以上述べたように、本発明により、ボッ
クスの下方から水漏れが生じない鋼帯の竪型冷却装置及
び冷却方法が提供される。その結果、作業環境や設備保
全上の問題が解消され、鋼帯にめっきや熱処理を連続的
に施す操業が円滑に実施できるようになった。As described above, according to the present invention, there is provided a vertical cooling apparatus and a cooling method for a steel strip in which water does not leak from the lower side of the box. As a result, problems related to working environment and equipment maintenance have been resolved, and the operation of continuously performing plating and heat treatment on the steel strip has become possible smoothly.
【図１】本発明に係る鋼帯の竪型冷却装置の一例を示す
模式図である。FIG. 1 is a schematic view showing an example of a vertical cooling device for a steel strip according to the present invention.
【図２】鋼帯の竪型冷却装置の従来例を示す模式図であ
る。FIG. 2 is a schematic diagram showing a conventional example of a vertical cooling device for a steel strip.
【図３】試作した実験装置を示す模式図である。FIG. 3 is a schematic diagram showing a prototype experimental device.
【図４】鋼帯の竪型冷却装置の下部拡大図であり、
（ａ）は従来装置、（ｂ）は本発明に係る装置に対応し
ている。FIG. 4 is an enlarged view of the lower part of the vertical cooling device for steel strips,
(A) corresponds to the conventional device, and (b) corresponds to the device according to the present invention.
【図５】本発明に係る鋼帯の竪型冷却装置の別の一例を
示す模式図である。FIG. 5 is a schematic view showing another example of the vertical cooling apparatus for steel strip according to the present invention.
【図６】本発明に係る下部排気口の設置位置を説明する
図である。FIG. 6 is a diagram illustrating an installation position of a lower exhaust port according to the present invention.
【図７】本発明に係る鋼帯の竪型冷却装置への給排気水
のバランスを説明する図である。FIG. 7 is a diagram for explaining the balance of supply / exhaust water to the vertical cooling device for steel strips according to the present invention.
１ 鋼板（鋼帯） ２ ボックス ３ 水ミスト ４ スプレー・ノズル ５ 排気口 ６ 水受けパン ７ 給気パッド（一段） ８ 水滴 ９ 透明な円筒 １０ シャワ １１ 給気ブロア １２ ビデオ装置 １３ 水 １４ 下部の開口 １５ 高圧気体用給気パッド １６ 低圧気体用給気パッド １７ 下方の排気口 １８ 側壁 １９ 気体（空気） ２０ 水受けパンと給気パッド間の気体（空気） ２１ 上部の開口 1 Steel plate (steel strip) Two boxes 3 water mist 4 spray nozzles 5 exhaust port 6 water pan 7 Air supply pad (one step) 8 water drops 9 transparent cylinder 10 showers 11 Air supply blower 12 Video equipment 13 water 14 Lower opening 15 Air supply pad for high pressure gas 16 Air supply pad for low pressure gas 17 Lower exhaust port 18 Side wall 19 gas (air) 20 Gas (air) between the water pan and the air supply pad 21 Upper opening
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平11−351719（ＪＰ，Ａ) 特開 平６−207226（ＪＰ，Ａ) 特公 昭50−25421（ＪＰ，Ｂ２) 特公 平８−6148（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) C21D 9/52 - 9/66 C21D 1/00 C23C 2/00 - 2/40 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-11-351719 (JP, A) JP-A-6-207226 (JP, A) JP-B 50-25421 (JP, B2) JP-B 8- 6148 (JP, B2) (58) Fields surveyed (Int.Cl. 7 , DB name) C21D 9/52-9/66 C21D 1/00 C23C 2/00-2/40
Claims (3)
又は下向きに走行するボックスと、該鋼帯に水ミストを
噴射する多段、且つ鋼帯幅方向に多数個配設したスプレ
ー・ノズルと、下側開口の周囲に設けた内部に気体を送
る給気パッドと、該ボックス内の排気を行う排気口と、
水受けパンとを備えた鋼帯の竪型冷却装置において、 前記給気パッドを、高圧気体の送気用と低圧気体の送気
用の２種類とし、上側に低圧用、下側に高圧用を隣接し
て２段に配置したことを特徴とする鋼帯の竪型冷却装
置。1. A box having upper and lower openings, in which steel strips run upward or downward, and a multi-stage sprayer for spraying water mist onto the steel strips, and a plurality of sprays arranged in the widthwise direction of the steel strips. A nozzle, an air supply pad provided around the lower opening for sending gas to the inside, and an exhaust port for exhausting the inside of the box,
In a steel strip vertical cooling device having a water receiving pan, the air supply pads are of two types, one for high-pressure gas supply and the other for low-pressure gas supply, where the upper side is for low pressure and the lower side is for high pressure. The vertical cooling device for steel strips is characterized in that the two are arranged adjacent to each other.
隔して設け、その下方の排気口の中心軸の位置を、水受
けパンの側壁に面する鋼板表面と該水受けパン側壁間距
離αの３〜１２倍に相当する高さだけ、該水受けパンの
側壁上端より高くしたことを特徴とする請求項１記載の
鋼帯の竪型冷却装置。 2. The exhaust port is provided on the side wall of the box so as to be separated in two steps, and the position of the central axis of the exhaust port below the exhaust port is between the steel plate surface facing the side wall of the water receiving pan and the side wall of the water receiving pan. The vertical cooling device for a steel strip according to claim 1, wherein a height corresponding to 3 to 12 times the distance α is made higher than an upper end of a side wall of the water receiving pan .
距離を、水受けパンの側壁に面する鋼板表面と該水受け
パン側壁間距離の１〜２０倍とすることを特徴とする請
求項２記載の鋼帯の竪型冷却装置。 3. The distance between the tip of the lower exhaust port and the steel plate surface is set to the steel plate surface facing the side wall of the water receiving pan and the water receiver.
A contract characterized by being 1 to 20 times the distance between bread side walls
The vertical cooling device for a steel strip according to claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24145298A JP3514130B2 (en) | 1998-08-27 | 1998-08-27 | Vertical cooling device and cooling method for steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24145298A JP3514130B2 (en) | 1998-08-27 | 1998-08-27 | Vertical cooling device and cooling method for steel strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000073125A JP2000073125A (en) | 2000-03-07 |
| JP3514130B2 true JP3514130B2 (en) | 2004-03-31 |
Family
ID=17074528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24145298A Expired - Fee Related JP3514130B2 (en) | 1998-08-27 | 1998-08-27 | Vertical cooling device and cooling method for steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3514130B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1014418A3 (en) * | 2001-10-05 | 2003-10-07 | Cockerill Rech & Dev | Method and device for accelerated cooling in continuous annealing. |
| AT411692B (en) * | 2002-08-02 | 2004-04-26 | Heinz Ing Altendorfer | Device for cooling a steel strip used in hot dip coating installations comprises groups each containing two blowing boxes that can be moved horizontally |
| JP5197967B2 (en) * | 2007-02-06 | 2013-05-15 | 三菱日立製鉄機械株式会社 | Drainer |
| JP5928412B2 (en) * | 2013-06-19 | 2016-06-01 | Ｊｆｅスチール株式会社 | Steel plate vertical cooling device and method for producing hot dip galvanized steel plate using the same |
| CN113210147B (en) * | 2021-05-21 | 2022-11-08 | 重庆赛迪热工环保工程技术有限公司 | Nozzle structure and special sectional cooler for zinc-aluminum-magnesium with same |
-
1998
- 1998-08-27 JP JP24145298A patent/JP3514130B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000073125A (en) | 2000-03-07 |
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