JPS623240B2 - - Google Patents

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Publication number
JPS623240B2
JPS623240B2 JP13389080A JP13389080A JPS623240B2 JP S623240 B2 JPS623240 B2 JP S623240B2 JP 13389080 A JP13389080 A JP 13389080A JP 13389080 A JP13389080 A JP 13389080A JP S623240 B2 JPS623240 B2 JP S623240B2
Authority
JP
Japan
Prior art keywords
electrolytic
cathode
strip
plate
aluminum
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
Application number
JP13389080A
Other languages
Japanese (ja)
Other versions
JPS5757896A (en
Inventor
Teruo Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP13389080A priority Critical patent/JPS5757896A/en
Publication of JPS5757896A publication Critical patent/JPS5757896A/en
Publication of JPS623240B2 publication Critical patent/JPS623240B2/ja
Granted legal-status Critical Current

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Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は帯状金属板の電解装置に関するもので
あり、特に帯状金属板の両面を効率的電解処理す
ることができる改良された電解装置に関するもの
である。 アルミニウム、鉄などの金属の表面に電解を応
用する方法は、例えば鍍金処理、電解研摩処理、
電解エツチング処理、陽極酸化処理、電解着色処
理、梨地処理などがあつて広汎に実用化されてお
り、このような電解処理を帯状金属板に対して連
続的に施し得る連続電解処理方法も知られてい
る。 第1図は、かかる電解処理の一つである陽極酸
化処理を帯状アルミニウム板の両面に対して連続
的に施し得る処理装置の基本的構造を示した模式
的断面図であり、図中帯状アルミニウム板1はロ
ール4に懸架されて矢印の如く給電槽2に送り込
まれる。給電槽2内には給電用電解液3が満たさ
れており、アルミニウム帯板1はこの給電用電解
液3に浸漬されつつ移送せしめられる。給電槽2
中には電源の陽極に接続した複数の陽極板5がア
ルミニウム帯板1に対向する如く設けられてい
る。このためアルミニウム帯板1は給電槽2内の
電解において陰極として作用することになる。つ
いでアルミニウム帯板1は電解槽6へ送られる。
電解槽6と給電槽2とは仕切板7によつて分割せ
しめられている。電解槽6内には電解液8が満た
され、また電源の陰極に接続された複数の陰極板
9,9′がアルミニウム帯板1の両面各側に対向
するように設けられている。このため電解槽6内
においてはアルミニウム帯板1は陽極として作用
し、電解液8の電解の結果、アルミニウム帯板1
の表面は酸化され、酸化皮膜が形成されることに
なる。こうして表面に酸化皮膜が設けられたアル
ミニウム帯板1は次工程へ移送され、必要な後処
理が施される。 このような帯状アルミニウム板の電解処理装置
は米国特許第3038850号、同3471375号、特公昭42
−16530号、同45−7842号、特開昭49−106927号
等に開示されている。 所で電解槽に配置された陰極板と電源の陰極と
の一般的な接続方法は、電源の陰極と接続された
ブスバー(bus bar)を途中で分岐してから各々
の陰極板と接続されていた。第2図及び第3図、
かかる従来の接続方法を示した概念図であつて、
いずも第1図におけるA,A′の線で切断した場
合における断面図(以下、横断面図と記す。)で
ある。第2図において、電源の陰極10と接続さ
れたブスバー11は途中で分岐されて一方は陰極
板9と、他方は陰極板9′とそれぞれ電解槽6の
上部から接続される。また第3図においては、同
様にして電解槽6の側壁から接続されている。し
かし乍ら、これら従来の接続方法による場合には
帯状アルミニウム板に形成される陽極酸化皮膜が
巾方向に対して不均一になるという欠点があつ
た。しかも第2図で示されるような接続方法によ
る場合には、ブスバーの配線が複雑となる為、ブ
スバーの電気抵抗による電力のロスが大きくなる
上、配線の為のスペースが余分に必要となる欠点
があつた。また第3図で示されるように接続した
場合には、電解槽の側壁に貫通孔を有する関係
上、そこでの電解液の漏れを防ぐために気密性を
確保しなければならない上に、維持管理もめんど
うであるといつた欠点があつた。 本発明者は、かかる欠点を解消すべく種々検討
を重ねた結果、本発明をなすに至つたものであつ
て、その要旨は電解液中を連続走行する帯状金属
板の一面側と他面側にそれぞれ対向するように第
1の電極および第2の電極を配置してなる電解装
置において、該第1の電極と電源の1極を結合
し、該第1の電極と該第2の電極とを該電解液中
で結合することを特徴とする帯状金属板の電解装
置である。 以下、本発明について図面を用いて詳細に説明
する。 第4図は、本発明の一実施態様に係る帯状アル
ミニウム板の陽極酸化装置の電解槽の横断面図で
ある。第4図において、電源の陰極10とその一
端が接続されたブスバー11は他端を陰極板9と
結合せしめられている。この陰極板9の端部は帯
状アルミニウム板1に対して反対側に配設されて
いる陰極板9′と導電性部材90によつて電解液
8中で結合されている。このように帯状アルミニ
ウム1の一面及び他面の各側にそれぞれ帯状アル
ミニウム板1に対向するように設置された陰極板
9及び陰極板9′を電解液中で電気的に接続した
場合には、帯状アルミニウム板1に形成される陽
極酸化皮膜が巾方向についても均一となるという
顕著な効果が得られる。しかも、電解液中で陰極
板9と陰極板9′とを結合されるので、電源の陰
極10と各陰極板とを接続するブスバーの配線が
少なくて済み、しかも電解槽に貫通孔を設ける必
要性もないので、装置の維持、管理が容易である
という利点も得られる。 第5図は本発明による他の実施態様に係る帯状
アルミニウム板の陽極酸化装置の電解槽の横断面
図である。この態様においては、陰極板9と陰極
板9′とは両端部において導電性部材90及び9
0′によつて電解液中8で接続されている。この
ように両端部で結合された陰極板を使用した場合
には、第4図の装置のように片端でのみ接続した
場合に比べて電力のロスが少ない上、陰極板の機
械的強度も高いので有利である。 陰極板9と陰極板9′を接続する為に使用され
る導電性部材90,90′は、電解液に浸漬され
ている関係上陰極板に使用しうる素材(例えばス
テンレス、アルミニウム、鉛など)から選ばれ、
最も好ましくは、陰極板と同一素材のものとされ
る。従つて、陰極板9及び9′並びに導電性部材
90(及び90′)とを一体成形したもの、例え
ば第4図で示される態様の場合にはコの字状のも
の、第5図で示される態様の場合には矩形の筒状
のものとしたものが有利に使用される。 陰極板9とブスバー11の結合位置は、特開昭
54−81133号公報に記載されているように帯状ア
ルムニウム板の巾方向に対して中央部、より具体
的には陰極板9を巾方向に4分割したときの中央
2分割部の範囲内が好ましく、最も好ましくは巾
方向に対する中心線上である。 陰極板9,9′は、帯状アルミニウム板1の巾
方向に対する中心線とその巾方向の中心線が一致
するように設置することが望ましい。また、陰極
板の数は電流密度が大きい場合にはその数を増加
させることが好ましい。 また陰極板の材質としては、白金、ステンレ
ス、アルミニウム、鉛或いはこれらの合金が適当
であり、とくにステンレス、アルミニウムが好ま
しい。 本発明は、電流密度が5A/dm2以上である場
合に効果的であり、とくに10A/dm2以上、更に
は15A/dm2である場合に効果が顕著である。 電解槽に使用する電解液としては、硫酸、蓚
酸、リン酸、クロム酸等が使用しうるが、とくに
硫酸が好好ましい。 給電用電解液としては、上記電解槽用電解液と
同一のものが使用しうる。陽極酸化処理におい
て、給電槽と電解槽とで同一の電解液を用いても
よいし、また異なつた電解液を用いてもよい。 陽極酸化皮膜を形成させるための条件は、使用
する電解液の種類により変化するため、一概には
決定しえないが、通常電解液濃度約1〜80wt
%、液温約5〜70℃、印加電圧約1〜100ボル
ト、電解時間約5秒〜5分間の範囲が適当であ
る。更に具体的には第1表の如き条件に設定する
のが好ましい。
The present invention relates to an electrolysis device for a strip-shaped metal plate, and more particularly to an improved electrolysis device that can efficiently electrolyze both sides of a strip-shaped metal plate. Methods of applying electrolysis to the surface of metals such as aluminum and iron include plating treatment, electrolytic polishing treatment,
Electrolytic etching treatments, anodizing treatments, electrolytic coloring treatments, satin finishing treatments, etc. have been widely put into practical use, and continuous electrolytic treatment methods that can continuously apply these electrolytic treatments to strip metal plates are also known. ing. FIG. 1 is a schematic cross-sectional view showing the basic structure of a processing device that can continuously perform anodizing treatment, which is one of the electrolytic treatments, on both sides of a strip-shaped aluminum plate. The board 1 is suspended on a roll 4 and fed into the power supply tank 2 as shown by the arrow. The power supply tank 2 is filled with a power supply electrolyte 3, and the aluminum strip 1 is transferred while being immersed in the power supply electrolyte 3. Power supply tank 2
Inside, a plurality of anode plates 5 connected to the anode of a power source are provided so as to face the aluminum strip 1. Therefore, the aluminum strip 1 acts as a cathode during electrolysis within the power supply tank 2. The aluminum strip 1 is then sent to an electrolytic cell 6.
The electrolytic cell 6 and the power supply cell 2 are separated by a partition plate 7. The electrolytic cell 6 is filled with an electrolytic solution 8, and a plurality of cathode plates 9, 9' connected to the cathode of a power source are provided on both sides of the aluminum strip 1 so as to face each other. Therefore, in the electrolytic cell 6, the aluminum strip 1 acts as an anode, and as a result of electrolysis of the electrolytic solution 8, the aluminum strip 1
The surface will be oxidized and an oxide film will be formed. The aluminum strip 1 with the oxide film formed on its surface is transferred to the next step and subjected to necessary post-treatments. Such electrolytic treatment equipment for strip-shaped aluminum plates is disclosed in U.S. Patent No. 3038850, U.S. Pat.
-16530, No. 45-7842, JP-A-49-106927, etc. The general method of connecting the cathode plate placed in the electrolytic cell with the cathode of the power supply is to branch off a bus bar connected to the cathode of the power supply, and then connect it to each cathode plate. Ta. Figures 2 and 3,
This is a conceptual diagram showing such a conventional connection method,
2 is a cross-sectional view (hereinafter referred to as a cross-sectional view) taken along lines A and A' in FIG. 1. FIG. In FIG. 2, the bus bar 11 connected to the cathode 10 of the power source is branched in the middle, and one side is connected to the cathode plate 9 and the other side is connected to the cathode plate 9' from the upper part of the electrolytic cell 6. Further, in FIG. 3, connection is made from the side wall of the electrolytic cell 6 in the same manner. However, these conventional connection methods have the disadvantage that the anodic oxide film formed on the strip-shaped aluminum plate is non-uniform in the width direction. Moreover, when using the connection method shown in Figure 2, the wiring of the busbars becomes complicated, which increases power loss due to the electrical resistance of the busbars, and also requires additional space for wiring. It was hot. In addition, when the connection is made as shown in Figure 3, since there is a through hole in the side wall of the electrolytic cell, airtightness must be ensured to prevent electrolyte leakage there, and maintenance is also required. There was a drawback that it was said to be troublesome. The inventor of the present invention has made various studies in order to eliminate such drawbacks, and as a result has come up with the present invention. In an electrolytic device in which a first electrode and a second electrode are arranged to face each other, the first electrode and one pole of a power source are coupled, and the first electrode and the second electrode are connected to each other. This is an electrolytic device for a band-shaped metal plate, characterized in that the metal plates are combined in the electrolytic solution. Hereinafter, the present invention will be explained in detail using the drawings. FIG. 4 is a cross-sectional view of an electrolytic cell of an anodizing apparatus for a strip-shaped aluminum plate according to an embodiment of the present invention. In FIG. 4, a bus bar 11 having one end connected to a cathode 10 of a power source is coupled to a cathode plate 9 at the other end. An end of the cathode plate 9 is connected to a cathode plate 9' disposed on the opposite side of the strip-shaped aluminum plate 1 by a conductive member 90 in the electrolytic solution 8. When the cathode plates 9 and 9', which are installed on one side and the other side of the aluminum strip 1 so as to face the aluminum strip 1, are electrically connected in an electrolytic solution in this way, A remarkable effect is obtained in that the anodic oxide film formed on the strip-shaped aluminum plate 1 becomes uniform in the width direction as well. Moreover, since the cathode plates 9 and 9' are bonded together in the electrolyte, there is less busbar wiring to connect the cathode 10 of the power supply and each cathode plate, and there is no need to provide through holes in the electrolytic cell. There is also the advantage that the equipment is easy to maintain and manage. FIG. 5 is a cross-sectional view of an electrolytic cell of an anodizing apparatus for a strip-shaped aluminum plate according to another embodiment of the present invention. In this embodiment, the cathode plate 9 and the cathode plate 9' have conductive members 90 and 9 at both ends.
8 in the electrolyte by 0'. When using a cathode plate that is connected at both ends in this way, there is less power loss than when the cathode plate is connected only at one end, as in the device shown in Figure 4, and the mechanical strength of the cathode plate is also high. Therefore, it is advantageous. The conductive members 90, 90' used to connect the cathode plates 9 and 9' are made of materials that can be used for the cathode plates (e.g. stainless steel, aluminum, lead, etc.) since they are immersed in an electrolytic solution. selected from
Most preferably, it is made of the same material as the cathode plate. Therefore, the cathode plates 9 and 9' and the conductive member 90 (and 90') are integrally molded, for example, in the case of the embodiment shown in FIG. 4, it is U-shaped, and in the case of the embodiment shown in FIG. In this case, a rectangular cylindrical shape is advantageously used. The connection position of the cathode plate 9 and the bus bar 11 is determined by
As described in Japanese Patent No. 54-81133, it is preferably in the center of the strip-shaped aluminum plate in the width direction, more specifically within the range of the central two-part part when the cathode plate 9 is divided into four in the width direction. , most preferably on the center line in the width direction. It is desirable that the cathode plates 9, 9' be installed so that the center line of the strip-shaped aluminum plate 1 in the width direction coincides with the center line of the width direction. Further, it is preferable to increase the number of cathode plates when the current density is high. Suitable materials for the cathode plate include platinum, stainless steel, aluminum, lead, or alloys thereof, with stainless steel and aluminum being particularly preferred. The present invention is effective when the current density is 5 A/dm 2 or more, particularly when the current density is 10 A/dm 2 or more, and particularly 15 A/dm 2 . As the electrolytic solution used in the electrolytic cell, sulfuric acid, oxalic acid, phosphoric acid, chromic acid, etc. can be used, but sulfuric acid is particularly preferred. As the power supply electrolyte, the same electrolyte as the electrolyte for the electrolytic cell can be used. In the anodizing treatment, the same electrolytic solution may be used in the power supply tank and the electrolytic tank, or different electrolytic solutions may be used in the power supply tank and the electrolytic tank. The conditions for forming an anodic oxide film vary depending on the type of electrolyte used and cannot be determined unconditionally, but the usual electrolyte concentration is approximately 1 to 80wt.
%, a solution temperature of about 5 to 70°C, an applied voltage of about 1 to 100 volts, and an electrolysis time of about 5 seconds to 5 minutes. More specifically, it is preferable to set the conditions as shown in Table 1.

【表】 第1表において、電解液として硫酸を用いる場
合には、濃度を約3〜30wt%、液温を約20〜50
℃に設定することがより好ましい。 本発明において電解処理に使用しうる電流波形
としては、「金属表面技術」第24巻、第34〜42頁
(1973)、金属表面技術協会「第48回学術講演大会
講演要旨集」第14〜15頁に記載される如き、直流
法、断続法、パルス法、PR法、交流併用法、交
直重畳法等が使用しうるが、これらのうち直流が
とくに好ましい。 以上の説明は帯状アルミニウム板の両面を陽極
酸化処理する場合であるが、同様の電気化学的反
応を利用する帯状金属板の電解処理、例えば鍍金
処理、電解研摩処理、電解エツチング処理、電解
着色処理、梨地処理などを両面に施こす場合にも
本発明が適用されうることは容易に理解されよ
う。 以下、本発明の効果を一層明瞭ならしめるため
に実施例を掲げる。 実施例 厚さ0.24mm、幅1030mmのJISA1100のアルミニ
ウム帯板を送り出し機より、送り出し、特開昭48
−33411号公報の実施例と同じ方法でブラシによ
つて砂目立てをした後、50lit/分の水道水で15秒
にわたり水洗し、更に10wt%の水酸化ナトリウ
ム水溶液によつて55℃で20秒間にわたりエツチン
グし、再び上述の方法により水洗した。しかる後
に30wt%の硝酸水溶液によつて20℃で20秒間に
わたりデスマツトし、上述の方法により水洗し
て、陽極酸化処理を施した。陽極酸化処理は第1
図に示される装置によつておこない、15wt%の
硫酸を電解液として、温度30℃、電流密度16A/
dm2で20秒にわたり処理した。陰極板としては、
ステンレス板10枚をアルミニウム帯板の上下に配
置した。陰極板と整流器の陰極との結合方法は第
2〜5図の各々の態様について実施した。 前記結合方法と酸化皮膜の均一性を第2表に記
す。
[Table] In Table 1, when using sulfuric acid as the electrolyte, the concentration is approximately 3 to 30 wt%, and the liquid temperature is approximately 20 to 50%.
It is more preferable to set the temperature at ℃. Current waveforms that can be used for electrolytic treatment in the present invention include "Metal Surface Technology" Vol. 24, pp. 34-42 (1973), "Metal Surface Technology Association""48th Academic Conference Abstracts" Vol. 14- As described on page 15, a direct current method, an intermittent method, a pulse method, a PR method, an alternating current combination method, an alternating current superimposition method, etc. can be used, and among these methods, direct current is particularly preferred. The above explanation deals with anodizing both sides of a strip-shaped aluminum plate, but electrolytic treatments of strip-shaped metal plates that utilize similar electrochemical reactions, such as plating, electrolytic polishing, electrolytic etching, and electrolytic coloring, are also applicable. It will be easily understood that the present invention can also be applied to cases where both sides are subjected to a satin finish or the like. Examples are given below in order to make the effects of the present invention clearer. Example: A JISA1100 aluminum strip plate with a thickness of 0.24 mm and a width of 1030 mm is fed out from a feeding machine.
- After graining with a brush in the same manner as in the example of Publication No. 33411, it was washed with tap water at 50 lit/min for 15 seconds, and then with a 10 wt% sodium hydroxide aqueous solution at 55°C for 20 seconds. The film was etched over a period of time and washed again with water using the method described above. Thereafter, it was desmatted with a 30 wt % nitric acid aqueous solution at 20° C. for 20 seconds, washed with water using the method described above, and anodized. Anodizing treatment is the first
The experiment was carried out using the apparatus shown in the figure, using 15wt% sulfuric acid as the electrolyte at a temperature of 30℃ and a current density of 16A/
dm 2 for 20 seconds. As a cathode plate,
Ten stainless steel plates were placed above and below the aluminum strip. The method for connecting the cathode plate and the cathode of the rectifier was carried out for each of the embodiments shown in FIGS. 2 to 5. Table 2 shows the bonding method and the uniformity of the oxide film.

【表】 均一性は酸化皮膜量の最大値と最少値の差を生
成皮膜量で割つた値を使用した。No.2を標準とし
て記した。数字の大きいほど不均一となることを
示している。 本発明によれば比較例に比べ均一性が極めて高
い酸化皮膜が生成されることが判明した。また第
3図のように槽貫通孔がないため液モレもない受
電用ブスバーが一本なので槽脇のスペースが大で
安全性、作業共に本発明がすぐれていた。又下面
電極を上面電極を直接結合したため本発明のほう
が電力ロスが少なく極めて好都合であつた。
[Table] For uniformity, the value obtained by dividing the difference between the maximum and minimum amount of oxide film by the amount of film formed was used. No. 2 was written as the standard. The larger the number, the more non-uniform it is. It has been found that according to the present invention, an oxide film with extremely high uniformity is produced compared to the comparative example. In addition, as shown in Figure 3, there is no tank through hole, so there is no liquid leakage, and there is only one power receiving busbar, so there is a large space beside the tank, and the present invention is superior in terms of safety and workability. Furthermore, since the lower surface electrode is directly connected to the upper surface electrode, the present invention has less power loss and is extremely convenient.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は陽極酸化装置の基本的構造を示した模
式的断面図である。第2図および3図は、従来の
陽極酸化装置における電解槽の模式的断面図であ
る。第4および第5図は、本発明による陽極酸化
装置の実施態様を示す電解槽の模式的断面図であ
る。
FIG. 1 is a schematic sectional view showing the basic structure of an anodizing device. FIGS. 2 and 3 are schematic cross-sectional views of an electrolytic cell in a conventional anodizing apparatus. 4 and 5 are schematic cross-sectional views of an electrolytic cell showing an embodiment of the anodizing apparatus according to the present invention.

Claims (1)

【特許請求の範囲】[Claims] 1 電解液中を連続走行する帯状金属板の一面側
と他面側にそれぞれ対向するように第1の電極お
よび第2の電極を配置してなる電解装置におい
て、該第1の電極と電源の1極を結合し、該第1
の電極と該第2の電極とを該電解液中で結合する
ことを特徴とする帯状金属板の電解装置。
1. In an electrolysis device in which a first electrode and a second electrode are arranged to face each other on one side and the other side of a strip-shaped metal plate that continuously runs in an electrolytic solution, the first electrode and a power source are connected to each other. one pole and the first
An electrolysis device for a band-shaped metal plate, characterized in that the electrode and the second electrode are combined in the electrolytic solution.
JP13389080A 1980-09-26 1980-09-26 Electrolyzing device for strip-like metallic plate Granted JPS5757896A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13389080A JPS5757896A (en) 1980-09-26 1980-09-26 Electrolyzing device for strip-like metallic plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13389080A JPS5757896A (en) 1980-09-26 1980-09-26 Electrolyzing device for strip-like metallic plate

Publications (2)

Publication Number Publication Date
JPS5757896A JPS5757896A (en) 1982-04-07
JPS623240B2 true JPS623240B2 (en) 1987-01-23

Family

ID=15115486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13389080A Granted JPS5757896A (en) 1980-09-26 1980-09-26 Electrolyzing device for strip-like metallic plate

Country Status (1)

Country Link
JP (1) JPS5757896A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE429765B (en) * 1982-02-09 1983-09-26 Jouko Korpi SET ON ELECTROPLETING
JPS62250197A (en) * 1986-04-21 1987-10-31 Taisho Kogyo Kk Plating device
WO2006033315A1 (en) 2004-09-24 2006-03-30 Ibiden Co., Ltd. Plating method and plating apparatus
TW200741037A (en) 2006-01-30 2007-11-01 Ibiden Co Ltd Plating apparatus and plating method
JP4878866B2 (en) 2006-02-22 2012-02-15 イビデン株式会社 Plating apparatus and plating method
KR101712170B1 (en) * 2015-11-30 2017-03-06 (주)동진금속 CONTINUOUS Oxide FILM FORMING APPARATUS OF COMMERCIAL ANNEALED ALUMINIUM ELECTRICAL CONDUCTOR WIRE AND CONTINUOUS Oxide FILM FORMING METHOD OF COMMERCIAL ANNEALED ALUMINIUM ELECTRICAL CONDUCTOR WIRE

Also Published As

Publication number Publication date
JPS5757896A (en) 1982-04-07

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