JP2000064072A - Continuous annealing equipment for steel strip - Google Patents
Continuous annealing equipment for steel stripInfo
- Publication number
- JP2000064072A JP2000064072A JP10234092A JP23409298A JP2000064072A JP 2000064072 A JP2000064072 A JP 2000064072A JP 10234092 A JP10234092 A JP 10234092A JP 23409298 A JP23409298 A JP 23409298A JP 2000064072 A JP2000064072 A JP 2000064072A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- steel strip
- dissolved
- cleaning liquid
- continuous annealing
- 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
Landscapes
- Cleaning In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鋼帯の連続焼鈍設
備に関するものである。TECHNICAL FIELD The present invention relates to a continuous annealing equipment for steel strips.
【０００２】[0002]
【従来の技術】金属帯の冷間圧延においては、一般に圧
延油を用いて圧延することから圧延後の金属帯には、圧
延油が付着している。このような冷間圧延後の金属帯
は、加工性を向上するために引き続き熱処理（焼鈍）を
施すが、この熱処理時に付着圧延油による汚れが発生す
る。そこで、冷間圧延後の金属帯を洗浄して脱脂した
後、上記のごとき熱処理を施すものである。しかして、
金属帯の洗浄方法としては、タンク内へ洗浄液を導入
し、タンク内の洗浄液表面へ気体を圧入して高圧状態に
保持して、洗浄液表面から気体を洗浄液へ混入するとと
もに、気体を洗浄液に溶存し、この気体溶存洗浄液を金
属帯に噴射して洗浄することが特開平６−７１２３３号
公報、特開平８−２５３８８３号公報に開示されてい
る。2. Description of the Related Art In cold rolling of a metal strip, rolling oil is generally used, and therefore rolling oil adheres to the metal strip after rolling. Such a metal strip after cold rolling is subsequently subjected to heat treatment (annealing) in order to improve workability, but during this heat treatment, stains are generated due to the attached rolling oil. Therefore, the metal strip after cold rolling is cleaned and degreased, and then the heat treatment as described above is performed. Then,
As a method of cleaning the metal strip, a cleaning liquid is introduced into the tank, gas is injected into the surface of the cleaning liquid in the tank to maintain a high pressure, and the gas is mixed into the cleaning liquid from the surface of the cleaning liquid and the gas is dissolved in the cleaning liquid. However, it is disclosed in JP-A-6-71233 and JP-A-8-253883 that the gas-dissolved cleaning liquid is sprayed onto the metal strip to clean it.
【０００３】[0003]
【発明が解決しようとする課題】上記のごとき、冷間圧
延後の金属帯洗浄方法においては、洗浄液と気体の接触
面積を大きくすることが困難であり、気体を効率よく洗
浄液へ混入することができず、また、洗浄液の表面から
の気体混入に限られ、洗浄液の気体溶存量が不十分にな
ることがある。従って、気体溶存洗浄液の金属帯噴射に
よる洗浄液中での微細気泡の生成が少なくなり、満足す
べき洗浄効果が得られ難い。また、タンク内の洗浄液上
部空間を高圧に保持することから、タンクを堅固にする
必要があり、かつ、コンプレッサー等の給気系を付設す
ることになり、設備コストが高価になる。しかもコンプ
レッサー等の運転によるランニングコストも上昇する等
の課題がある。また、鋼帯の連続焼鈍設備においては、
鋼帯の通板速度の向上にともないライン内に設置した洗
浄装置の洗浄能力が低下することから通板速度を犠牲に
することになる等の課題もある。本発明は、このような
課題を有利に解決するためなされたものであり、高効率
で気体を洗浄液へ混入させ、しかも気体を洗浄液中へ確
実かつ、十分に溶存させた洗浄液を金属帯へ噴射して、
確実に洗浄することができ、かつ連続焼鈍設備に組み込
み高速通板においても確実に洗浄することのできる鋼帯
の連続焼鈍設備を提供することを目的とするものであ
る。In the above-described metal strip cleaning method after cold rolling, it is difficult to increase the contact area between the cleaning liquid and the gas, and it is possible to efficiently mix the gas into the cleaning liquid. In addition, the amount of dissolved gas in the cleaning liquid may be insufficient due to gas mixing from the surface of the cleaning liquid. Therefore, the generation of fine bubbles in the cleaning liquid due to the metal band injection of the gas-dissolved cleaning liquid is reduced, and it is difficult to obtain a satisfactory cleaning effect. Further, since the upper space of the cleaning liquid in the tank is maintained at a high pressure, it is necessary to make the tank rigid, and an air supply system such as a compressor is additionally provided, which increases the equipment cost. Moreover, there is a problem that the running cost due to the operation of the compressor and the like increases. In the continuous annealing equipment for steel strips,
There is also a problem that the stripping speed is sacrificed because the cleaning ability of the cleaning device installed in the line is reduced as the striping speed of the steel strip is improved. The present invention has been made to advantageously solve such a problem, and highly efficiently mixes a gas into the cleaning liquid, and yet reliably and sufficiently dissolves the gas into the cleaning liquid and injects the sufficiently dissolved cleaning liquid into the metal strip. do it,
An object of the present invention is to provide a continuous annealing equipment for steel strips which can be surely cleaned and can be surely cleaned even when incorporated in a continuous annealing equipment even for high-speed rolling.
【０００４】[0004]
【課題を解決するための手段】本発明の特徴とするとこ
ろは、連続焼鈍設備の鋼帯入側に気体溶存洗浄液生成装
置を設置し、次いで入側ルーパー、連続焼鈍炉、出側ル
ーパーを連設したことを特徴とする鋼帯の連続焼鈍設
備。及び連続焼鈍設備の鋼帯入側に気体溶存洗浄液生成
装置を設置し、次いで入側ルーパー、連続焼鈍炉、出側
ルーパー、調質圧延機、精整装置を連設したことを特徴
とする鋼帯の連続焼鈍設備である。A feature of the present invention is that a gas-dissolved cleaning liquid generator is installed on the steel strip inlet side of a continuous annealing equipment, and then an inlet side looper, a continuous annealing furnace, and an outlet side looper are connected in series. The continuous annealing equipment for steel strips, which is characterized by being installed. A steel characterized in that a gas-dissolved cleaning liquid generator is installed on the steel strip inlet side of the continuous annealing equipment, and then an inlet looper, a continuous annealing furnace, an outlet looper, a temper rolling mill, and a conditioning device are connected in series. It is a strip continuous annealing equipment.
【０００５】[0005]
【発明の実施の形態】本発明設備においては、例えば一
般に設置されている鋼帯の連続焼鈍設備として、入側ル
ーパー、連続焼鈍炉（予熱帯、均熱帯、冷却帯からな
る）、出側ルーパーからなる鋼帯の連続焼鈍設備の鋼帯
入側の後述のごとき気体溶存洗浄液生成装置を設置す
る。上記のごとき構成の連続焼鈍設備においては、鋼帯
の入側で鋼帯表裏面に気体溶存洗浄液を噴射して、確実
に圧延油等の異物を除去した後、入側ルーパーを介して
連続焼鈍炉へ導き焼鈍を施し、次いで出側ルーパーを介
して巻き取りリールにコイル状に巻き取る。このような
焼鈍済みの鋼帯コイルは、例えば後工程で調質圧延を施
し鋼帯の形状を矯正した後、精整装置のサイドトリーマ
ーで鋼帯巾方向の両端部を切断して所定寸法にするとと
もに塗油機で防錆油を塗布して簡易防錆処理を施すもの
である。BEST MODE FOR CARRYING OUT THE INVENTION In the equipment of the present invention, for example, as a generally installed continuous annealing equipment for steel strips, an inlet side looper, a continuous annealing furnace (consisting of a pre-tropical zone, a soaking zone and a cooling zone), an outlet side looper are used. Install a gas-dissolved cleaning liquid generator as described below on the steel strip entry side of the continuous annealing equipment for steel strips. In the continuous annealing equipment configured as described above, the gas-dissolved cleaning liquid is sprayed on the front and back surfaces of the steel strip on the inlet side of the steel strip to reliably remove foreign matter such as rolling oil, and then continuously anneal through the inlet side looper. It is introduced into a furnace, annealed, and then wound into a coil on a take-up reel via an exit looper. Such annealed steel strip coil is subjected to temper rolling in a post-process to correct the shape of the steel strip, and then cut at both ends in the width direction of the strip with a side trimmer of a conditioning device to a predetermined size. At the same time, a simple rust preventive treatment is performed by applying rust preventive oil with an oil coating machine.
【０００６】また、鋼帯の連続焼鈍設備として、入側ル
ーパー、連続焼鈍炉（予熱帯、均熱帯、冷却帯からな
る）、出側ルーパー、調質圧延機、精整装置（サイドト
リーマー、塗油機等からなる）からなる鋼帯の連続焼鈍
設備の鋼帯入側の後述のごとき気体溶存洗浄液生成装置
を設置する。このような構成の連続焼鈍設備において
は、鋼帯の入側で鋼帯表裏面に気体溶存洗浄液を噴射し
て、確実に圧延油等の異物を除去した後、入側ルーパー
を介して連続焼鈍炉へ導き焼鈍を施し、次いで出側ルー
パーを介して調質圧延機へ通板し鋼帯の形状を矯正した
後、精整装置のサイドトリーマーで鋼帯巾方向の両端部
を切断して所定寸法にするとともに塗油機で防錆油を塗
布して簡易防錆処理を施すものである。As continuous annealing equipment for steel strips, an inlet looper, a continuous annealing furnace (consisting of pre-tropical zone, soaking zone, and cooling zone), an outgoing looper, a temper rolling mill, a refining device (side trimmer, coating) Install a gas-dissolved cleaning liquid generator, which will be described later, on the steel strip entry side of the continuous annealing equipment for steel strips consisting of an oil machine, etc.). In the continuous annealing equipment with such a configuration, the gas-dissolved cleaning liquid is sprayed on the front and back surfaces of the steel strip on the inlet side of the steel strip to reliably remove foreign matter such as rolling oil, and then continuously anneal via the inlet looper. After guiding to the furnace and annealing, and then passing it to the temper rolling mill via the exit side looper to correct the shape of the steel strip, the side trimmer of the refining device cuts both ends in the width direction of the steel strip The size is adjusted and a rust preventive oil is applied with an oil coating machine to perform a simple rust preventive treatment.
【０００７】次に、上記のごとく連続焼鈍設備の鋼帯入
側に設置する気体溶存洗浄液生成装置の一例を挙げる。
タンク入側の洗浄液供給管に気液混合器としてエゼクタ
ー等を設け、洗浄液をタンク内へ供給すると同時に気体
として空気等を供給することによって、気体と洗浄液と
の接触面積を大幅に増加させることができ、洗浄液に気
体を短時間で大量に混入させた気体混合洗浄液を生成し
てタンク内へ導入する。このようにタンク内へ気体混合
洗浄液を導入することによって、タンク内で攪拌作用が
発生し、気体混合洗浄液の混合気体が洗浄液中へ十分か
つ、確実に溶存させることができる。Next, an example of the gas-dissolved cleaning liquid generation device installed on the steel strip entrance side of the continuous annealing equipment as described above will be given.
By providing an ejector or the like as a gas-liquid mixer in the cleaning liquid supply pipe on the tank inlet side and supplying the cleaning liquid into the tank and simultaneously supplying air or the like as gas, the contact area between the gas and the cleaning liquid can be significantly increased. It is possible to generate a gas-mixed cleaning liquid in which a large amount of gas is mixed in the cleaning liquid in a short time and to introduce it into the tank. By thus introducing the gas-mixed cleaning liquid into the tank, a stirring action occurs in the tank, and the gas mixture of the gas-mixed cleaning liquid can be sufficiently and surely dissolved in the cleaning liquid.
【０００８】このようにして、タンク内で洗浄液中へ気
体を溶存させるものであるが、溶存しなかった余剰気体
は、気泡となって洗浄液中を浮上して洗浄液表面上部の
空間へ移動するのでタンク外へ放散してもよいが、この
余剰気体を回収して上記のごとき気液混合器へ供給し、
不足分は新たな気体を供給（補給）して必要量を供給す
ることによって、装置系内の気体圧を安定して保持する
ことができるので有利である。In this way, the gas is dissolved in the cleaning liquid in the tank, but the surplus gas which is not dissolved becomes bubbles and floats in the cleaning liquid and moves to the space above the surface of the cleaning liquid. Although it may be diffused outside the tank, this excess gas is recovered and supplied to the gas-liquid mixer as described above,
The shortage is advantageous because the gas pressure in the device system can be stably maintained by supplying (supplementing) new gas to supply the required amount.
【０００９】上記のごとく、気体溶存洗浄液を生成する
に際して、タンク内の気体混合洗浄液の温度を３０〜６
０℃に保持しつつ気体溶存洗浄液とすることによって、
気体混合洗浄液中への気体溶存度を向上することができ
る。従って、気体溶存洗浄液を鋼帯表面に噴射すると、
微細な気液含有洗浄液となって、鋼帯への衝突により強
力な衝撃力が発生して、付着圧延油等の異物の除去作用
を一層高めることができる。しかして、気体混合洗浄液
の温度が３０℃未満になると、圧延油の流動性が低下し
て、鋼板から前記のごとき異物を除去するのに好ましく
ない。また、６０℃超になると気体溶存度が低下し好ま
しくない。気体溶存度を向上し高い洗浄効果を得るため
より好適な温度としては、４０〜５０℃である。As described above, when the gas-dissolved cleaning liquid is produced, the temperature of the gas-mixed cleaning liquid in the tank is set to 30-6.
By maintaining it at 0 ° C as a gas-dissolved cleaning solution,
The gas solubility in the gas-mixed cleaning liquid can be improved. Therefore, when the gas-dissolved cleaning liquid is sprayed on the steel strip surface,
The cleaning liquid becomes a fine gas-liquid containing liquid, and a strong impact force is generated by the collision with the steel strip, so that the removing action of foreign matter such as adhered rolling oil can be further enhanced. However, if the temperature of the gas-mixed cleaning liquid is lower than 30 ° C., the fluidity of the rolling oil is lowered, which is not preferable for removing the foreign matter from the steel sheet. Further, if it exceeds 60 ° C., the gas solubility decreases, which is not preferable. A more suitable temperature for improving the gas solubility and obtaining a high cleaning effect is 40 to 50 ° C.
【００１０】このようにタンク内で気体溶存洗浄液とし
た後、例えばタンク出側の気体溶存洗浄液供給管からポ
ンプを介してノズルへ高圧の気体溶存洗浄液を供給し
て、冷間圧延後の鋼帯へ噴射することによって、噴射し
た気体溶存洗浄液は、ノズルから噴出すると同時に急速
に減圧させ、気体溶存洗浄液中の溶存気体が気化して微
細な気泡が多数生成する。このように気体溶存洗浄液が
微細気泡含有洗浄液となって、鋼帯へ噴射衝突すること
から衝突時の衝撃力とあいまって、衝突により多数の微
細気泡が破裂する衝撃力によって鋼帯の付着圧延油等の
異物を確実に洗浄除去することができるものである。After forming the gas-dissolved cleaning liquid in the tank in this way, for example, the high-pressure gas-dissolved cleaning liquid is supplied to the nozzle from the gas-dissolved cleaning liquid supply pipe on the outlet side of the tank through the pump to cool the steel strip. By injecting into, the jetted gas-dissolved cleaning liquid is rapidly depressurized at the same time as being jetted from the nozzle, and the dissolved gas in the gas-dissolved cleaning liquid is vaporized to generate many fine bubbles. In this way, the gas-dissolved cleaning solution becomes a cleaning solution containing fine bubbles, and when it collides with the steel strip, it collides with the impact force at the time of collision, and the impact force at which many fine bubbles burst due to the collision causes the rolling oil to adhere to the steel strip. It is possible to reliably remove foreign matter such as.
【００１１】次に、本発明の実施例を挙げる。
実施例１
図１において、冷間圧延後の鋼帯コイル１を入側巻き戻
しリール２にセットして、鋼帯３を巻き戻しつつ鋼帯入
側に設置した気体溶存洗浄液生成装置４へ導き、気体溶
存洗浄液を鋼帯３表裏面へ噴射して洗浄し、入側ルーパ
ー５を介して予熱帯、均熱帯及び冷却帯からなる連続焼
鈍炉６で鋼帯３の焼鈍を施した後、出側ルーパー７を介
して巻き取りリール８に鋼帯コイル１として巻き取る。
気体溶存洗浄液生成装置４の上流に電清装置（図示せ
ず）を設けることもできる。Next, examples of the present invention will be described. Example 1 In FIG. 1, a steel strip coil 1 after cold rolling is set on an inlet side rewinding reel 2, and a steel strip 3 is unwound and guided to a gas-dissolved cleaning liquid generation device 4 installed on the steel strip inlet side. , A gas-dissolved cleaning solution is sprayed on the front and back surfaces of the steel strip 3 to clean it, and after annealing the steel strip 3 in a continuous annealing furnace 6 consisting of a pre-tropical zone, a soaking zone and a cooling zone through an inlet looper 5, The steel strip coil 1 is wound around the winding reel 8 via the side looper 7.
An electric cleaning device (not shown) may be provided upstream of the gas-dissolved cleaning liquid generation device 4.
【００１２】実施例２
図２において、冷間圧延後の鋼帯コイル１を入側巻き戻
しリール２にセットして、鋼帯３を巻き戻しつつ鋼帯入
側に設置した気体溶存洗浄液生成装置４へ導き、気体溶
存洗浄液を鋼帯３表裏面へ噴射して洗浄し、入側ルーパ
ー５を介して予熱帯、均熱帯及び冷却帯からなる連続焼
鈍炉６で鋼帯３の焼鈍を施した後、調質圧延機９へ通板
して焼鈍後の鋼帯３の形状を矯正し、次いでサイドトリ
ーマー、塗油機からなる精整装置１０へ導き、サイドト
リーマーで鋼帯３巾方向の両端部を切断し所定巾にし
て、引き続き塗油機により防錆油を塗布し簡易防錆処理
を施した後、巻き取りリール８の鋼帯コイル１として巻
き取る。気体溶存洗浄液生成装置４の上流に電清装置
（図示せず）を設けることもできる。Embodiment 2 In FIG. 2, a cold-rolled steel strip coil 1 is set on an inlet-side rewinding reel 2 and a gas-dissolved cleaning liquid generating device is installed on the steel strip inlet side while rewinding a steel strip 3. 4, the gas-dissolved cleaning liquid was jetted to the front and back surfaces of the steel strip 3 to clean it, and the steel strip 3 was annealed through the inlet looper 5 in a continuous annealing furnace 6 consisting of pre-tropical, soaking and cooling zones. After that, the steel strip 3 is passed through a temper rolling mill 9 to correct the shape of the annealed steel strip 3, and then guided to a refining device 10 composed of a side trimmer and an oil coating machine. The portion is cut into a predetermined width, and subsequently, a rust preventive oil is applied by an oil coating machine to carry out a simple rust preventive treatment, and then wound as a steel strip coil 1 of a take-up reel 8. An electric cleaning device (not shown) may be provided upstream of the gas-dissolved cleaning liquid generation device 4.
【００１３】次に、上記のごとき気体溶存洗浄液生成装
置の一例を挙げる。図３において、タンク１１に洗浄液
供給管１２と気体溶存液供給管１３と水蒸気供給管１４
を設け、該洗浄液供給管１２に気液混合器１５を設ける
とともに、タンク１１上部から余剰気体回収管１６を気
液混合器１５へ接続して、上記余剰気体回収管１６に気
体供給管１７を設ける。かくして洗浄液をポンプ１８ａ
を介して気液混合器１５へ供給するとともに、気体供給
管１７から気液混合器１５へ気体を供給して、洗浄液へ
気体を混入し気体混合洗浄液を生成し、これをタンク１
１内へ導入する。このようにタンク１１内へ導入した気
体混合洗浄液１９に水蒸気供給管１４から水蒸気を供給
して液温を３０〜６０℃に保持しつつ、タンク１１内で
の攪拌作用の発生によって、気体混合洗浄液１９中の気
体を気体混合洗浄液１９内へ溶存し気体溶存洗浄液とす
る。かくして、気体溶存洗浄液中の余剰気体は上部へ浮
上して、余剰気体回収管１６から気液混合器１５へ供給
するとともに、不足分は気体供給管１７から気液混合器
１５へ供給する。このようにタンク１１内で生成した気
体溶存洗浄液は、気体溶存洗浄液供給管１３からポンプ
１８ｂを介してノズル２０へ供給し、鋼帯３の表裏面へ
噴射して洗浄するものである。Next, an example of the gas-dissolved cleaning liquid generating device as described above will be given. In FIG. 3, a tank 11 has a cleaning liquid supply pipe 12, a gas dissolved liquid supply pipe 13, and a steam supply pipe 14.
The cleaning liquid supply pipe 12 is provided with the gas-liquid mixer 15, and the excess gas recovery pipe 16 is connected to the gas-liquid mixer 15 from the upper part of the tank 11 to connect the excess gas recovery pipe 16 with the gas supply pipe 17. Set up. Thus, the cleaning liquid is pumped 18a.
Is supplied to the gas-liquid mixer 15 via the gas supply pipe 17 and is supplied to the gas-liquid mixer 15 from the gas supply pipe 17 to mix the gas with the cleaning liquid to generate a gas-mixed cleaning liquid.
Introduce into 1. As described above, by supplying steam to the gas mixed cleaning liquid 19 introduced into the tank 11 from the steam supply pipe 14 to maintain the liquid temperature at 30 to 60 ° C., the gas mixed cleaning liquid is generated by the stirring action in the tank 11. The gas in 19 is dissolved in the gas mixed cleaning liquid 19 to form a gas-dissolved cleaning liquid. Thus, the surplus gas in the gas-dissolved cleaning liquid floats upward and is supplied from the surplus gas recovery pipe 16 to the gas-liquid mixer 15, and the shortage is supplied from the gas supply pipe 17 to the gas-liquid mixer 15. The gas-dissolved cleaning liquid thus generated in the tank 11 is supplied from the gas-dissolved cleaning liquid supply pipe 13 to the nozzle 20 via the pump 18b and sprayed to the front and back surfaces of the steel strip 3 for cleaning.
【００１４】[0014]
【実施例】次に、本発明による操業例を比較例とともに
挙げる。EXAMPLES Next, examples of operation according to the present invention will be given together with comparative examples.
【表１】 [Table 1]
【００１５】[0015]
【表２】（表１のつづき） [Table 2] (Continued from Table 1)
【００１６】注１：洗浄液は水、気体は空気。
注２：気体混合器は、エゼクターを使用。
注３：比較例は、連続焼鈍設備の鋼帯入側に気体溶存洗
浄液生成装置はない。比較例１、２は、鋼帯入側に洗浄
装置を有するが、気体溶存液の生成機能はない。比較例
３の気体混合洗浄液の使用は、通常の電解洗浄装置を鋼
帯入側に配置して洗浄した。
注４：タンク内上部空間気圧は、タンク内液表面とタン
ク天井（蓋）間の空間気圧。
注５：上記のごとく、タンク内へ連続的に供給するとと
もに、タンクから気体溶存洗浄液をノズルへ供給して鋼
帯へ噴射洗浄した。
注６：鋼帯は、冷間圧延後の巾：８００ｍｍ、板厚：
０．２ｍｍを洗浄し、引き続き連続焼鈍−調質圧延（ド
ライ圧延）−精整処理（鋼帯巾方向両端部を切断して所
定寸法とした後、一般に用いられている防錆油を塗布し
た。）を連続的に施した。
注７：冷間圧延油は、鋼帯：カチオン系、油／水エマル
ジョンタイプの圧延油（一般に使用されているもの）。
注８：連続焼鈍は、一般に設置されている連続焼鈍炉で
予熱帯、均熱帯及び冷却帯ともＨ2 ガス：５％、残りＮ
2 ガスの還元性雰囲気中で鋼帯を焼鈍した。
注９：洗浄結果は、洗浄後の通板金属帯に白色紙を５秒
間接触させ汚れ度合を目視判断した。◎：汚れなし、
○：僅かに汚れ発生、△：薄黒汚れ発生（実用上差支え
なし）、×：黒色汚れ発生。なお防錆油塗布後の鋼帯表
面は目視で、比較例の鋼帯においては、洗浄不良部の残
存と見られる部分的な色調ムラが発生した。Note 1: The cleaning liquid is water and the gas is air. Note 2: Ejector is used as the gas mixer. Note 3: In the comparative example, there is no gas-dissolved cleaning liquid generator on the steel strip entrance side of the continuous annealing equipment. Comparative Examples 1 and 2 have a cleaning device on the steel strip entrance side, but do not have a gas dissolved liquid generation function. The gas mixture cleaning liquid of Comparative Example 3 was used by arranging an ordinary electrolytic cleaning device on the steel strip insertion side for cleaning. Note 4: The atmospheric pressure above the tank is the atmospheric pressure between the liquid surface inside the tank and the tank ceiling (lid). Note 5: As described above, the gas was continuously supplied into the tank, and the gas-dissolved cleaning liquid was supplied from the tank to the nozzle to spray-clean the steel strip. Note 6: Steel strip has a width after cold rolling: 800 mm, plate thickness:
0.2 mm was washed and then continuously annealed-tempered rolling (dry rolling) -conditioning treatment (both ends of the steel strip in the width direction were cut into predetermined dimensions, and then a commonly used rust preventive oil was applied. .) Was continuously applied. Note 7: Cold rolling oil is steel strip: cationic type, oil / water emulsion type rolling oil (generally used). Note 8: Continuous annealing is a continuous annealing furnace that is generally installed, and the pre-tropical, soaking and cooling zones are H 2 gas: 5%, the remaining N
The steel strip was annealed in a reducing atmosphere of 2 gases. Note 9: As for the cleaning result, white paper was brought into contact with the strip of metal after cleaning for 5 seconds to visually judge the degree of contamination. ◎: No stain,
◯: Slight stains occurred, Δ: Light black stains occurred (no practical problem), ×: Black stains occurred. The surface of the steel strip after applying the rust preventive oil was visually observed, and in the steel strip of the comparative example, partial color tone unevenness was observed, which was considered to be a residual cleaning failure portion.
【００１７】[0017]
【発明の効果】本発明方法によれば、鋼帯の洗浄による
清浄度を向上することができ、金属帯の品質及び歩留り
を高めることができる。また、十分かつ、確実に気体を
溶存させた気体溶存洗浄液を低コストで製造することが
できる。更に、鋼帯の洗浄能力の向上により鋼帯の通板
速度を高めることができ、生産性を向上することができ
る等の優れた効果が得られる。According to the method of the present invention, the cleanliness of the steel strip by cleaning can be improved, and the quality and yield of the metal strip can be improved. In addition, a gas-dissolved cleaning liquid in which a gas is sufficiently and surely dissolved can be manufactured at low cost. Further, by improving the cleaning ability of the steel strip, the passing speed of the steel strip can be increased, and the excellent effects such as the productivity can be improved.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明設備の実施例を示す側面図である。FIG. 1 is a side view showing an embodiment of the equipment of the present invention.
【図２】本発明設備の実施例を示す側面図である。FIG. 2 is a side view showing an embodiment of the equipment of the present invention.
【図３】気体溶存洗浄液生成装置の一例を示す側面図で
ある。FIG. 3 is a side view showing an example of a gas-dissolved cleaning liquid generation device.
４ 気体溶存洗浄液生成装置 ５ 入側ルーパー ６ 連続焼鈍炉 ７ 出側ルーパー ９ 調質圧延機 １０ 精整装置 １１ タンク １２ 洗浄液供給管 １３ 気体溶存洗浄液供給管 １４ 水蒸気供給管 １５ 気液混合器 １６ 余剰気体回収管 １７ 気体供給管 4 Gas-dissolved cleaning liquid generator 5 Entry side looper 6 Continuous annealing furnace 7 Departure looper 9 Temper rolling mill 10 Adjustment device 11 tanks 12 Cleaning liquid supply pipe 13 Gas-dissolved cleaning liquid supply pipe 14 Water vapor supply pipe 15 gas-liquid mixer 16 Excess gas recovery pipe 17 Gas supply pipe
───────────────────────────────────────────────────── フロントページの続き (72)発明者 菊川 久士 愛知県東海市東海町５−３ 新日本製鐵株 式会社名古屋製鐵所内 Ｆターム(参考） 3B116 AA08 AB13 BB24 BB62 BB88 BB90 3B201 AA08 AB13 BB24 BB62 BB88 BB90 BB92 BB98 CB01 4K043 AA01 DA05 EA06 HA02 4K053 PA02 PA12 QA05 QA07 SA05 SA19 TA04 XA11 XA36 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hisashi Kikukawa 5-3 Tokai-cho, Tokai-shi, Aichi Nippon Steel Corporation Ceremony Company Nagoya Steel Works F term (reference) 3B116 AA08 AB13 BB24 BB62 BB88 BB90 3B201 AA08 AB13 BB24 BB62 BB88 BB90 BB92 BB98 CB01 4K043 AA01 DA05 EA06 HA02 4K053 PA02 PA12 QA05 QA07 SA05 SA19 TA04 XA11 XA36
Claims (3)
液生成装置を設置し、次いで入側ルーパー、連続焼鈍
炉、出側ルーパーを連設したことを特徴とする鋼帯の連
続焼鈍設備。1. A continuous annealing facility for a steel strip, characterized in that a gas-dissolved cleaning liquid generator is installed on the steel strip inlet side of the continuous annealing facility, and then an inlet side looper, a continuous annealing furnace, and an outlet side looper are connected in series. .
液生成装置を設置し、次いで入側ルーパー、連続焼鈍
炉、出側ルーパー、調質圧延機、精整装置を連設したこ
とを特徴とする鋼帯の連続焼鈍設備。2. A gas-dissolved cleaning liquid generator is installed on the steel strip inlet side of the continuous annealing equipment, and then an inlet looper, a continuous annealing furnace, an outlet looper, a temper rolling mill, and a conditioning device are connected in series. Characteristic steel strip continuous annealing equipment.
供給管と水蒸気供給管を設け、該洗浄液供給管に気液混
合器を設けるとともに、上記タンク上部から余剰気体回
収管を気液混合器へ接続し、該余剰気体回収管に気体供
給管を付設した気体溶存洗浄液生成装置を連続焼鈍設備
の鋼帯入側に設けたことを特徴とする請求項１または請
求項２に記載の鋼帯の連続焼鈍設備。3. A tank is provided with a cleaning liquid supply pipe, a gas-dissolved cleaning liquid supply pipe, and a steam supply pipe, a cleaning liquid supply pipe is provided with a gas-liquid mixer, and an excess gas recovery pipe is connected from the upper part of the tank to the gas-liquid mixer. The steel strip according to claim 1 or 2, further comprising a gas-dissolved cleaning liquid generation device connected to the surplus gas recovery pipe and provided with a gas supply pipe on the steel strip inlet side of the continuous annealing equipment. Continuous annealing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23409298A JP3706483B2 (en) | 1998-08-20 | 1998-08-20 | Continuous annealing equipment for steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23409298A JP3706483B2 (en) | 1998-08-20 | 1998-08-20 | Continuous annealing equipment for steel strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000064072A true JP2000064072A (en) | 2000-02-29 |
| JP3706483B2 JP3706483B2 (en) | 2005-10-12 |
Family
ID=16965501
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23409298A Expired - Fee Related JP3706483B2 (en) | 1998-08-20 | 1998-08-20 | Continuous annealing equipment for steel strip |
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| Country | Link |
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| JP (1) | JP3706483B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018178233A (en) * | 2017-04-20 | 2018-11-15 | Ｊｆｅスチール株式会社 | Method and facility for manufacturing galvanized steel band with chemical conversion coating |
-
1998
- 1998-08-20 JP JP23409298A patent/JP3706483B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018178233A (en) * | 2017-04-20 | 2018-11-15 | Ｊｆｅスチール株式会社 | Method and facility for manufacturing galvanized steel band with chemical conversion coating |
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| Publication number | Publication date |
|---|---|
| JP3706483B2 (en) | 2005-10-12 |
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