JPH11124696A - Method for washing metallic strip after cold-rolling - Google Patents
Method for washing metallic strip after cold-rollingInfo
- Publication number
- JPH11124696A JPH11124696A JP28507397A JP28507397A JPH11124696A JP H11124696 A JPH11124696 A JP H11124696A JP 28507397 A JP28507397 A JP 28507397A JP 28507397 A JP28507397 A JP 28507397A JP H11124696 A JPH11124696 A JP H11124696A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- metal strip
- cleaning
- cleaning liquid
- tank
- 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.)
- Withdrawn
Links
Landscapes
- Cleaning By Liquid Or Steam (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】本発明方法は、冷間圧延後の
金属帯洗浄方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning a metal strip after cold rolling.
【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
延油分が付着している。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脱脂洗浄した後、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, the rolling oil is generally adhered to the metal strip after rolling since rolling is generally performed using a rolling oil. The metal strip after such cold rolling is subjected to a subsequent heat treatment in order to improve workability,
During this heat treatment, stains due to the adhering rolling oil occur. Therefore, after the cold-rolled metal strip is degreased and washed, the above-described heat treatment is performed. Thus, as a method of cleaning a metal strip, a cleaning liquid is introduced into a tank, gas is injected into the cleaning liquid surface in the tank, and the state is maintained at a high pressure. Japanese Patent Application Laid-Open Nos. Hei 6-71233 and Hei 8-81-233 dissolve in a cleaning solution and spray the gas-dissolved cleaning solution onto a metal strip for cleaning.
No. 253883.
【０００３】[0003]
【発明が解決しようとする課題】このような冷間圧延後
の金属帯洗浄方法においては、冷間圧延時に付着した圧
延油の種類によって、洗浄時に金属帯へ噴射する洗浄液
で付着圧延油が金属帯に押し伸ばされて、付着範囲が広
がるにとどまり、完全に油分汚れを除去することは困難
である。また、洗浄液中微細気泡の破泡衝撃力を利用し
た洗浄方法において、上記のごとき洗浄方法では、気体
溶存に必要な、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
ができない。つまり、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。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。本発明方
法は、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、金属帯に付着した圧延油を硬化した後、洗浄
液の噴射により確実に除去（洗浄）するとともに、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のできる冷間圧延後の金属帯洗
浄方法を提供することを目的とするものである。In such a method for cleaning a metal strip after cold rolling, depending on the type of rolling oil adhering during cold rolling, the adhering rolling oil is applied to the metal strip with a cleaning liquid sprayed onto the metal strip during cleaning. It is stretched into a band, and the area of adhesion is widened, and it is difficult to completely remove oil stains. Further, in the cleaning method using the bubble breaking impact force of the fine bubbles in the cleaning liquid, it is difficult to increase the contact area between the cleaning liquid and the gas necessary for dissolving the gas in the cleaning method as described above. It cannot be mixed into the cleaning solution. That is, it is limited to the gas mixture from the surface of the cleaning liquid, and the dissolved gas amount of the cleaning liquid becomes insufficient. Accordingly, the generation of fine bubbles in the cleaning solution by the metal band injection of the gas-dissolved cleaning solution 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, the tank needs to be 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 or the like also increases. The method of the present invention has been made in order to advantageously solve such problems, and after the rolling oil adhered to the metal strip is hardened, it is reliably removed (washed) by spraying a washing liquid, and the gas is removed with high efficiency. To provide a method for cleaning a metal strip after cold rolling, which makes it possible to surely wash a metal strip by injecting a cleaning liquid in which a gas is mixed into the cleaning liquid and gas is reliably and sufficiently dissolved into the metal strip. It is the purpose.
【０００４】[0004]
【課題を解決するための手段】本発明方法の特徴とする
ところは、金属帯の付着圧延油を硬化させた後、洗浄液
を金属帯に噴射して洗浄することを特徴とする冷間圧延
後の金属帯洗浄方法である。The method of the present invention is characterized in that after the rolling oil on the metal strip is hardened, the cleaning liquid is sprayed onto the metal strip for cleaning. Metal strip cleaning method.
【０００５】[0005]
【発明の実施の形態】金属帯に付着した圧延油を硬化す
る方法としては、例えばプラズマ照射によって圧延油を
加熱して油中の揮発分等を蒸発除去し、圧延油を残渣等
の固形分に改質硬化する。このように圧延油を硬化する
ことにより、洗浄液の噴射による衝突力で容易に除去
（洗浄）することができる。しかして、付着圧延油を洗
浄液の噴射によって確実に除去（洗浄）することができ
るように圧延油を加熱硬化するためには、１００〜３０
０Ｗ／ｃｍ2 のエネルギー密度で０．５秒以下のプラズ
マ照射によって確実に硬化させることができる。また、
レーザー加熱を用いる場合は、３００〜５００Ｗ／ｃｍ
2 のエネルギー密度でプラズマ加熱と同様な効果を得る
ことができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS As a method for hardening rolling oil adhering to a metal strip, for example, the rolling oil is heated by plasma irradiation to remove volatiles and the like in the oil by evaporation, and the rolling oil is solidified such as a residue. Modified and cured. By hardening the rolling oil in this way, it is possible to easily remove (clean) by the collision force due to the injection of the cleaning liquid. Thus, in order to heat-harden the rolling oil so that the attached rolling oil can be surely removed (washed) by spraying the washing liquid, 100 to 30 to 30 minutes is required.
Curing can be reliably performed by plasma irradiation at an energy density of 0 W / cm 2 for 0.5 second or less. Also,
When laser heating is used, 300 to 500 W / cm
An effect similar to plasma heating can be obtained with an energy density of 2 .
【０００６】また、上記のごとく加熱による圧延油の硬
化の他、例えば圧延油付着金属帯に圧力波を照射し、圧
延油を励起して硬化させることができる。このように冷
間圧延後の金属帯表面に圧力波（衝撃波）を照射するこ
とによって、金属帯表面に付着している圧延油（油分
等）を蒸発除去させるメカニズムとしては図１（イ）に
示すごとく、金属帯１の表面に付着している油分等から
なる圧延油膜８へ圧力波９（衝撃波）を照射することに
よって、（ロ）のように圧延油膜８を粉砕し、油中の水
分と一部の油分を蒸発させることにより、硬化させるこ
とができるものである。In addition to the hardening of the rolling oil by heating as described above, a pressure wave can be applied to, for example, a metal band to which the rolling oil adheres to excite the rolling oil to harden the oil. As shown in FIG. 1 (a), the mechanism of evaporating and removing the rolling oil (oil, etc.) adhering to the metal strip surface by irradiating a pressure wave (shock wave) to the metal strip surface after cold rolling as described above is shown in FIG. As shown, a pressure wave 9 (shock wave) is applied to a rolling oil film 8 made of oil or the like adhering to the surface of the metal strip 1 to crush the rolling oil film 8 as shown in FIG. Can be cured by evaporating some of the oil.
【０００７】このようにして、金属帯表面の圧延油膜を
硬化する圧力波発生装置としては、例えばガス爆発室と
ノズルを一体に構成し、水素ガス、メタンガス、アセチ
レンガス、コークス炉発生ガス等の燃焼ガスに酸素、空
気等の支燃性ガスを混入して爆発混合気体とし、ガス爆
発室へ導くと同時に、点火爆発させガス爆発室に高気圧
を発生させる。この高気圧がガス爆発室からノズル内へ
圧力伝播して、ノズルから金属帯表面へ圧力波（衝撃
波）となって照射され、圧延油膜を破砕して除去（浄
化）するものである。このような燃焼ガスとしては、上
記水素ガス等の他、高揮発油を霧化してガス爆発室へ導
き、支燃性ガスと混合して燃焼ガスとし、点火爆発させ
ることにより圧力波（衝撃波）を照射することもできる
が、設備コスト、操業上等から上記のごとき水の電気分
解により簡便に得られる水素ガス等を用いることが有利
である。[0007] As described above, as a pressure wave generator for hardening the rolling oil film on the surface of the metal strip, for example, a gas explosion chamber and a nozzle are integrally formed, and hydrogen gas, methane gas, acetylene gas, coke oven generated gas and the like are used. Combustion gas such as oxygen and air is mixed into the combustion gas to form an explosion mixture, which is guided to the gas explosion chamber and, at the same time, ignited and exploded to generate a high pressure in the gas explosion chamber. This high pressure propagates from the gas explosion chamber into the nozzle, and is radiated from the nozzle as a pressure wave (shock wave) to the surface of the metal band, thereby crushing and removing (purifying) the rolling oil film. As such a combustion gas, in addition to the above-mentioned hydrogen gas and the like, a highly volatile oil is atomized and guided to a gas explosion chamber, mixed with a supporting gas to form a combustion gas, and a pressure wave (shock wave) is generated by ignition and explosion. However, it is advantageous to use hydrogen gas or the like which is easily obtained by electrolysis of water as described above from the viewpoint of equipment cost and operation.
【０００８】しかして圧力波（衝撃波）としては、１０
6 〜１０10Ｐａで、１００〜１００００Ｈｚ繰り返し金
属帯へ照射することによって、冷間圧延後の鋼帯、アル
ミニウム帯等の金属帯表面の付着圧延油膜中の油分等を
蒸発することによって、確実に洗浄液の噴射により除去
することのできるように硬化することができる。However, the pressure wave (shock wave) is 10
In 6 to 10 10 Pa, by irradiating the 100~10000Hz repeatedly metal strip, the steel strip after cold rolling, by evaporating the oil during deposition rolling oil film of the metal strip surface of an aluminum band, or the like, etc., reliably It can be cured so that it can be removed by spraying a cleaning liquid.
【０００９】次に、このような金属帯表面の圧延油膜を
硬化する圧力波発生装置の一例を図面によって説明す
る。図２において、冷間圧延後の金属帯１をペイオフリ
ール２から巻き戻して浄化室１０へ導き、金属帯１通板
位置の金属帯１表裏面へ複数個の圧力波発生装置群１
１、１１ａを指向配置し、通板中の金属帯１表裏面へ圧
力波（衝撃波）を照射して圧延油膜中の油分等を蒸発さ
せ硬化するものである。Next, an example of a pressure wave generator for hardening the rolling oil film on the surface of the metal strip will be described with reference to the drawings. In FIG. 2, the metal strip 1 after cold rolling is rewound from the payoff reel 2 and guided to the purification chamber 10, and a plurality of pressure wave generator groups 1 are placed on the front and back surfaces of the metal strip 1 at the position where the metal strip 1 passes.
1, 11a are directionally arranged, and a pressure wave (shock wave) is applied to the front and back surfaces of the metal band 1 in the threading to evaporate oil and the like in the rolling oil film and harden.
【００１０】上記のごとき、圧力波発生装置としては例
えば、図３に示すごとく圧力波発生装置１１のガス爆発
室１３に図示のごとく、ガスインジェクター１４と点火
プラグ１５を配設し、ガスインジェクター１４からガス
爆発混合気体をガス爆発室１３内へ導入すると同時に、
点火プラグ１５で点火爆発させガス爆発室１３内に高気
圧を発生し、隔壁１６の孔１７を介してノズル１８へ圧
力波伝播して、ノズル１８から金属帯１の表面へ圧力波
（衝撃波）を照射して圧延油膜を硬化するものである。As described above, for example, as shown in FIG. 3, a gas injector 14 and a spark plug 15 are disposed in a gas explosion chamber 13 of a pressure wave generator 11 as shown in FIG. At the same time as introducing the gas explosion mixture into the gas explosion chamber 13 from
An ignition explosion is caused by the ignition plug 15 to generate a high pressure in the gas explosion chamber 13, a pressure wave is propagated to the nozzle 18 through the hole 17 of the partition 16, and a pressure wave (shock wave) is transmitted from the nozzle 18 to the surface of the metal strip 1. Irradiation cures the rolling oil film.
【００１１】このようにして、プラズマ照射、圧力波等
によって付着圧延油膜を硬化した後、洗浄液を噴射して
硬化膜を除去（洗浄）するものであるが、このような洗
浄液としては、気体混合洗浄液をタンク内へ導入して気
体溶存洗浄液を生成し、この気体溶存洗浄液を金属帯へ
噴射して洗浄することが有利である。このようにタンク
内へ導入する気体混合洗浄液は、例えばタンク入側の洗
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。In this way, after the applied rolling oil film is cured by plasma irradiation, pressure wave, etc., the cleaning liquid is sprayed to remove (clean) the cured film. It is advantageous to introduce the cleaning liquid into the tank to produce a gas-dissolved cleaning liquid, and to spray the gas-dissolved cleaning liquid onto a metal strip for cleaning. As described above, the gas-mixed cleaning liquid introduced into the tank is provided, for example, by providing an ejector or the like as a gas-liquid mixer in a cleaning liquid supply pipe on the tank entrance side, supplying the cleaning liquid, and simultaneously supplying air or the like as a gas. The contact area with the cleaning liquid can be greatly increased, and a gas mixture cleaning liquid in which a large amount of gas is mixed into the cleaning liquid in a short time is generated and introduced into the tank. By introducing the gas-mixed cleaning liquid into the tank in this manner, a stirring action occurs in the tank, and the gas mixture of the gas-mixed cleaning liquid can be sufficiently and reliably dissolved in the cleaning liquid.
【００１２】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、設備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。As described above, the gas is dissolved in the cleaning liquid in the tank. However, the surplus gas that 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 released outside the tank, this surplus gas is recovered and supplied to the gas-liquid mixer as described above,
The shortage is advantageous because the gas pressure in the equipment system can be stably maintained by supplying (supplying) new gas and supplying the required amount.
【００１３】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
後の金属帯へ噴射することによって、噴射した気体溶存
洗浄液は、ノズルを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、金属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（破泡衝撃力）によって、前記のごとく硬
化した金属帯の付着圧延油を確実に洗浄除去することが
できるものである。After the gas-dissolved cleaning liquid is formed in the tank, a high-pressure gas-dissolved cleaning liquid is supplied to the nozzle via a pump, for example, from a gas-dissolved cleaning liquid supply pipe on the tank exit side, and is sprayed onto the cold-rolled metal strip. By this, the jetted gas-dissolved cleaning liquid is rapidly depressurized at the same time as jetting out the nozzle,
The dissolved gas in the gas-dissolved cleaning liquid is vaporized, and a number of fine bubbles are generated. In this way, the gas-dissolved cleaning liquid becomes a cleaning liquid containing fine bubbles, which is ejected and collides with the metal band, and combined with the impact force at the time of collision, the impact force at which a large number of fine bubbles burst due to the collision (foaming impact force). The rolling oil adhering to the metal strip hardened as described above can be reliably removed by washing.
【００１４】上記のごとき洗浄方法の一例を図面によっ
て説明すると、図４に示すごとくタンク１９下部の洗浄
液供給管２０に気液混合器２１とポンプ２２を設けると
ともに、タンク１９上部から余剰気体回収管２３を気液
混合器２１へ接続し、この余剰気体回収管２３に気体供
給管２４を設ける。一方、タンク１９に図示のごとく気
体溶存洗浄液供給管２５にポンプ２２ａを介設する。か
くして洗浄液をポンプ２２を介して気液混合器２１へ供
給するとともに、気体供給管２４から気液混合器２１へ
気体を供給し、洗浄液へ気体を混入して気体混合洗浄液
を生成し、これをタンク１９内へ導入する。タンク１９
内へ導入した気体混合洗浄液２６は、攪拌作用により気
体混合洗浄液２６中の気体が、気体混合洗浄液２６中へ
溶存して気体溶存洗浄液となる。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２３から気液
混合器２１へ供給するとともに、不足分は気体供給管２
４から気液混合器２１へ供給する。このようにタンク１
９内で生成した気体溶存洗浄液は、気体溶存洗浄液供給
管２５からポンプ２２ａを介してノズル（図示せず）へ
供給し、金属帯（図示せず）へ噴射して洗浄するもので
ある。An example of the cleaning method as described above will be described with reference to the drawings. As shown in FIG. 4, a cleaning liquid supply pipe 20 below the tank 19 is provided with a gas-liquid mixer 21 and a pump 22 and an excess gas recovery pipe is provided from the upper part of the tank 19. 23 is connected to the gas-liquid mixer 21, and a gas supply pipe 24 is provided in the surplus gas recovery pipe 23. On the other hand, a pump 22a is interposed in the tank 19 as shown in the drawing. Thus, the cleaning liquid is supplied to the gas-liquid mixer 21 via the pump 22, and the gas is supplied from the gas supply pipe 24 to the gas-liquid mixer 21, and the gas is mixed into the cleaning liquid to generate a gas-mixed cleaning liquid. It is introduced into the tank 19. Tank 19
The gas mixture cleaning liquid 26 introduced into the gas dissolves into the gas mixture cleaning liquid 26 by the stirring action, and becomes a gas-dissolved cleaning liquid. Excess gas in the gas-dissolved cleaning liquid floats upward and is supplied from the excess gas recovery pipe 23 to the gas-liquid mixer 21, and the excess gas is supplied to the gas supply pipe 2.
4 to the gas-liquid mixer 21. Thus, tank 1
The gas-dissolved cleaning liquid generated in 9 is supplied from a gas-dissolved cleaning liquid supply pipe 25 to a nozzle (not shown) via a pump 22a, and is jetted to a metal strip (not shown) for cleaning.
【００１５】[0015]
【実施例】次に、本発明方法の実施例を比較例とともに
挙げる。Next, examples of the method of the present invention will be described together with comparative examples.
【表１】 [Table 1]
【００１６】[0016]
【表２】（表１のつづき） [Table 2] (continuation of Table 1)
【００１７】注１：プラズマ照射は、直流プラズマアー
ク方式、電極は、タングステン製を使用。 注２：圧力波発生装置は、図３に示す装置でガス爆発室
容積５×１０-3ｍ3 、爆発混合気体（水素ガス−酸素混
合ガス）を制御して、圧力波（衝撃波）を調整しつつ、
上記圧延後の鋼帯を巻き戻し通板中の鋼帯表裏面に、そ
れぞれ５機からなる圧力波発生装置群から圧力波を照射
して浄化して付着圧延油を硬化した。 注３：洗浄液は、水、気体は、空気。 注４：気液混合器は、エゼクターを使用。 注５：比較例の洗浄液供給量及び供給圧は、タンクへの
供給量及び供給圧（気体混合洗浄液は使用せず）。 注６：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。比較例は、コンプレッサー
により気体をタンク内上部空間へ圧入し、気体をタンク
内洗浄液表面から液中へ混入して溶存させた。 注７：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金
属帯（通板速度７５０ｍｐｍ）へ噴射洗浄した。 注８：金属帯は、Ａ：鋼帯、Ｂ：アルミニウム帯、Ｃ：
銅帯でそれぞれ冷間圧延後の金属帯（巾：８００ｍｍ、
板厚：０．２ｍｍ）を洗浄した。 注９：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）、
アルミニウム帯及び銅帯は、ノニオン系、油／水エマル
ジョンタイプの圧延油を使用。 注10：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。Note 1: The plasma irradiation uses a DC plasma arc method and the electrodes use tungsten. Note 2: The pressure wave generator controls the pressure wave (shock wave) by controlling the explosion mixed gas (hydrogen gas-oxygen mixed gas) with the gas explosion chamber volume of 5 × 10 −3 m 3 using the device shown in FIG. While doing
The rolled steel strip was rewound, and the pressure strips were irradiated on the front and back surfaces of the steel strip in the passing plate from a group of five pressure wave generators to purify and harden the adhered rolling oil. Note 3: The cleaning liquid is water and the gas is air. Note 4: The gas-liquid mixer uses an ejector. Note 5: The supply amount and the supply pressure of the cleaning liquid in the comparative example are the supply amount and the supply pressure to the tank (without using the gas-mixed cleaning liquid). Note 6: The pressure in the upper space in the tank is the space pressure between the liquid surface in the tank and the tank ceiling (lid). In the comparative example, gas was pressed into the upper space in the tank by a compressor, and the gas was mixed into the liquid from the surface of the cleaning liquid in the tank and dissolved. Note 7: 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 and clean the metal strip (plate passing speed: 750 mpm). Note 8: Metal strips are A: steel strip, B: aluminum strip, C:
Metal strip after cold rolling with copper strip (width: 800 mm,
(Plate thickness: 0.2 mm). Note 9: Cold rolling oil is a steel strip: cationic, oil / water emulsion type rolling oil (commonly used),
For aluminum and copper strips, use a nonionic oil / water emulsion type rolling oil. Note 10: The cleaning result was determined by visually checking the degree of contamination by bringing white paper into contact with the passed metal band after cleaning for 5 seconds. ◎: No stain,
：: Slight stain generation, Δ: Light black stain occurrence (no practical difference), ×: Black stain occurrence.
【００１８】[0018]
【発明の効果】本発明方法によれば、金属帯の洗浄によ
る清浄度を著しく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、金属帯の洗浄に
よる清浄度が高いことから塗装密着性、鮮映性に優れ、
かつ、めっき、化成処理性等の表面処理性にも優れた金
属帯が得られる等の優れた効果を奏することができる。According to the method of the present invention, the cleanliness of the metal strip by cleaning can be remarkably improved, and the quality and yield of the metal strip can be improved. In addition, because the cleanliness of the metal band is high, coating adhesion and sharpness are excellent,
In addition, excellent effects such as obtaining a metal band having excellent surface treatment properties such as plating and chemical conversion treatment properties can be obtained.
【図１】本発明方法による金属帯付着圧延油膜の硬化原
理を示す説明図である。FIG. 1 is an explanatory view showing the principle of hardening of a metal strip-attached rolling oil film by the method of the present invention.
【図２】金属帯付着圧延油の硬化装置の一例を示す側面
図である。FIG. 2 is a side view showing an example of a curing device for a metal strip-attached rolling oil.
【図３】圧力波発生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 pressure wave generator.
【図４】金属帯洗浄方法の一例を示す側面図である。FIG. 4 is a side view showing an example of a metal strip cleaning method.
Claims (9)
浄液を金属帯に噴射して洗浄することを特徴とする冷間
圧延後の金属帯洗浄方法。1. A method for cleaning a metal strip after cold rolling, comprising: after curing the rolling oil attached to the metal strip, spraying a cleaning liquid onto the metal strip for cleaning.
させることを特徴とする請求項１に記載の冷間圧延後の
金属帯洗浄方法。2. The method for cleaning a metal strip after cold rolling according to claim 1, wherein the adhered rolling oil of the metal strip is hardened by heating.
り励起して硬化させることを特徴とする請求項１または
請求項２に記載の冷間圧延後の金属帯洗浄方法。3. The method for cleaning a metal strip after cold rolling according to claim 1, wherein the rolling oil adhering to the metal strip is excited and hardened by plasma irradiation.
励起して硬化することを特徴とする請求項１または請求
項２に記載の冷間圧延後の金属帯洗浄方法。4. The method for cleaning a metal strip after cold rolling according to claim 1 or 2, wherein the adhesion rolling oil of the metal strip is excited by pressure wave irradiation and hardened.
力波を照射して硬化することを特徴とする請求項１また
は請求項２または請求項４に記載の冷間圧延後の金属帯
洗浄方法。5. The cleaning of a metal strip after cold rolling according to claim 1, wherein the rolling oil adhered to the metal strip is cured by irradiating a pressure wave caused by a gas explosion. Method.
ａの圧力波を１００〜１００００Ｈｚ照射して硬化する
ことを特徴とする請求項１または請求項２または請求項
４または請求項５に記載の冷間圧延後の金属帯洗浄方
法。6. The method of claim 6, wherein the rolling oil on the metal strip is 10 6 to 10 10 P
The method for cleaning a metal strip after cold rolling according to claim 1, wherein the pressure wave of “a” is irradiated with 100 to 10000 Hz for curing.
体溶存洗浄液を生成し、この気体溶存洗浄液を金属帯へ
噴射して洗浄することを特徴とする請求項１または請求
項２または請求項３または請求項４または請求項５また
は請求項６に記載の冷間圧延後の金属帯洗浄方法。7. A gas-containing cleaning liquid is introduced into a tank to generate a gas-dissolved cleaning liquid, and the gas-dissolved cleaning liquid is sprayed onto a metal strip to perform cleaning. 7. The method for cleaning a metal strip after cold rolling according to claim 3 or claim 4 or claim 5 or claim 6.
に混入させた気体混合洗浄液をタンク内へ導入すること
を特徴とする請求項１または請求項２または請求項３ま
たは請求項４または請求項５または請求項６または請求
項７に記載の冷間圧延後の金属帯洗浄方法。8. A gas-mixed cleaning liquid in which a gas is mixed into a cleaning liquid by a gas-liquid mixer on an inlet side, and is introduced into the tank. The method for cleaning a metal strip after cold rolling according to claim 5, claim 6, or claim 7.
余剰気体を回収して、タンク内へ導入する洗浄液に混入
させて気体混合洗浄液とし、この気体混合洗浄液をタン
ク内へ導入することを特徴とする請求項１または請求項
２または請求項３または請求項４または請求項５または
請求項６または請求項７または請求項８に記載の冷間圧
延後の金属帯洗浄方法。9. A method of recovering excess gas in a gas-dissolved cleaning liquid generated in a tank, mixing the collected gas with a cleaning liquid introduced into the tank to form a gas-mixed cleaning liquid, and introducing the gas-mixed cleaning liquid into the tank. The method for cleaning a metal strip after cold rolling according to claim 1, claim 2, claim 3, claim 4, claim 5, claim 6, claim 7, or claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28507397A JPH11124696A (en) | 1997-10-17 | 1997-10-17 | Method for washing metallic strip after cold-rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28507397A JPH11124696A (en) | 1997-10-17 | 1997-10-17 | Method for washing metallic strip after cold-rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11124696A true JPH11124696A (en) | 1999-05-11 |
Family
ID=17686805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28507397A Withdrawn JPH11124696A (en) | 1997-10-17 | 1997-10-17 | Method for washing metallic strip after cold-rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11124696A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101220552B1 (en) * | 2010-12-27 | 2013-02-07 | 주식회사 포스코 | Apparatus For Cleaning With Plasma Device |
| KR101271874B1 (en) * | 2009-12-28 | 2013-06-07 | 주식회사 포스코 | Method for Removing Oil of Strip |
| KR101322026B1 (en) * | 2009-12-29 | 2013-11-04 | 주식회사 포스코 | Apparatus for Treating Surface of Strip, and Method for Treating and Coating Surface of Strip using The Same |
| CN108176679A (en) * | 2017-12-28 | 2018-06-19 | 深圳市鑫承诺环保产业股份有限公司 | A kind of metallic film on-line cleaning method |
-
1997
- 1997-10-17 JP JP28507397A patent/JPH11124696A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101271874B1 (en) * | 2009-12-28 | 2013-06-07 | 주식회사 포스코 | Method for Removing Oil of Strip |
| KR101322026B1 (en) * | 2009-12-29 | 2013-11-04 | 주식회사 포스코 | Apparatus for Treating Surface of Strip, and Method for Treating and Coating Surface of Strip using The Same |
| KR101220552B1 (en) * | 2010-12-27 | 2013-02-07 | 주식회사 포스코 | Apparatus For Cleaning With Plasma Device |
| CN108176679A (en) * | 2017-12-28 | 2018-06-19 | 深圳市鑫承诺环保产业股份有限公司 | A kind of metallic film on-line cleaning method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20050104 |