JPS63235500A - Pretreatment for electrolytic surface roughening treatment - Google Patents
Pretreatment for electrolytic surface roughening treatmentInfo
- Publication number
- JPS63235500A JPS63235500A JP6798087A JP6798087A JPS63235500A JP S63235500 A JPS63235500 A JP S63235500A JP 6798087 A JP6798087 A JP 6798087A JP 6798087 A JP6798087 A JP 6798087A JP S63235500 A JPS63235500 A JP S63235500A
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic
- roughening treatment
- aluminum
- surface roughening
- pretreatment
- 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.)
- Pending
Links
- 238000007788 roughening Methods 0.000 title claims abstract description 35
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 28
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000956 alloy Substances 0.000 claims abstract description 21
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 27
- 239000007864 aqueous solution Substances 0.000 claims description 11
- 238000002203 pretreatment Methods 0.000 claims description 11
- 239000008151 electrolyte solution Substances 0.000 claims description 10
- 238000005238 degreasing Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 7
- 238000005868 electrolysis reaction Methods 0.000 abstract description 6
- 239000003792 electrolyte Substances 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 239000000243 solution Substances 0.000 description 5
- 230000002378 acidificating effect Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000011162 core material Substances 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000003929 acidic solution Substances 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011437 continuous method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000010407 anodic oxide Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001512 metal fluoride Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Printing Plates And Materials Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、アルミニウム若しくはアルミニウム合金材の
電解粗面化処理のための前処理方法に関するもので、特
に電解粗面化が極めて均一におこなえるようにする電解
粗面化処理のための前処理方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pretreatment method for electrolytic surface roughening treatment of aluminum or aluminum alloy materials, and particularly relates to a pretreatment method for electrolytic surface roughening treatment that enables extremely uniform electrolytic surface roughening treatment. The present invention relates to a pretreatment method for electrolytic surface roughening treatment.
金属の表面には、圧延、加工の際に、加工油剤。 Processing oil is applied to the metal surface during rolling and processing.
空気中の酸素、水分などが金属と複雑にからみ合うため
、酸化物やスラットなどが不均一に生成している。この
ような状態の金属面に対して、直ちに電解粗面化処理を
おこなうと、均一な粗面化処理が、おこなえず、処理ム
ラが発生することがある。Oxygen, moisture, etc. in the air interact with the metal in a complex manner, resulting in uneven formation of oxides and slats. If electrolytic surface roughening treatment is immediately performed on a metal surface in such a state, uniform surface roughening treatment may not be performed and uneven treatment may occur.
この処理ムラは外観上好ましくなく、また、その金属面
に塗［−＆どをのせたとき塗膜の密着性の悪化をもたら
す原因となる。This treatment unevenness is unfavorable in terms of appearance and also causes deterioration in the adhesion of the coating film when a coating is applied to the metal surface.
そのため従来は電解粗面化処理前に金属材を酸性溶液中
やアルカリ性溶液中に浸漬し、加工油剤。Therefore, conventionally, before electrolytic surface roughening treatment, metal materials are immersed in an acidic or alkaline solution and treated with a processing oil.
酸化物、スマットの除去と、加工変質層の溶解をおこ々
い表面の洗浄、均一化をおこなっている。The surface is cleaned and made uniform by removing oxides and smut and dissolving the damaged layer.
しかし々がら、アルミニウム若しくはアルミニウム合金
材については酸性溶液中への浸漬２例えば硫酸液中への
浸漬では、前処理としての時間が長く必要である。また
、アルカリ性溶液中への浸漬、例えばＮａＯＨ液中への
浸漬では多量の素地の溶解を伴うために液寿命が短く、
急激な化学的溶解反応であるので薄物シートなどでは穴
アキ、溶断などの問題点がある。However, when aluminum or aluminum alloy materials are immersed in an acidic solution 2, for example, in a sulfuric acid solution, a long pretreatment time is required. In addition, immersion in an alkaline solution, for example in NaOH solution, involves dissolving a large amount of the base material, resulting in a short solution life.
Because it is a rapid chemical dissolution reaction, there are problems with thin sheets, such as holes and fusing.
これら従来の方法では電解粗面化処理のための前処理を
工業的に有利におこなうにあたって不利でありた。These conventional methods are disadvantageous in industrially advantageous pretreatment for electrolytic surface roughening treatment.
このため、アルミニウム若しくはアルミニウム合金材に
ついてこれらの欠点がない、電解粗面化処理のための前
処理方法が強く要望されていた。Therefore, there has been a strong demand for a pretreatment method for electrolytic surface roughening treatment of aluminum or aluminum alloy materials that does not have these drawbacks.
〔問題点を解決するための手段〕
そこで、前記の欠点がないアルミニウム若しくはアルミ
ニウム合金材の電解粗面化処理のための前処理方法につ
いて、本発明者らは鋭意研究したととる、硫酸を含む電
解液中で加工油剤、酸化物、スマットの除去と加工変質
層の溶解をおこなうべきアルミニウム若しくけアルミニ
ウム合金材と、それに対向する電極との間に、直流電流
または交流電流を流すことによシ、高速かつ電気的に制
御可能な電解粗面化処理の前処理方法を見い出し、本発
明に到達した。[Means for solving the problem] Therefore, the present inventors have conducted extensive research into a pretreatment method for electrolytic surface roughening treatment of aluminum or aluminum alloy materials that does not have the above-mentioned drawbacks. By passing a direct current or an alternating current between the aluminum or aluminum alloy material from which machining oil, oxides, and smut are to be removed and the machining-affected layer is to be dissolved in an electrolytic solution and an electrode facing the material. We have discovered a high-speed and electrically controllable pretreatment method for electrolytic surface roughening treatment, and have arrived at the present invention.
すなわち、本発明は、アルミニウム若しくはアルミニウ
ム合金材の電解粗面化処理のための前処理方法において
、硫酸を含む電解液中でアルミニウム若しくはアルミニ
ウム合金材に対して、それと対向する電極との間に、直
流電流又は交流電流を流して電解し、アルミニウム若し
くはアルミニウム合金材の表面を脱脂並びに溶解すると
同時に酸化皮膜を形成することを特徴とするアルミニウ
ム若しくはアルミニウム合金材の電解粗面化処理のため
の前処理方法である。That is, the present invention provides a pretreatment method for electrolytic surface roughening treatment of aluminum or aluminum alloy material, in which aluminum or aluminum alloy material is treated in an electrolytic solution containing sulfuric acid, between the aluminum or aluminum alloy material and an electrode facing the material. Pretreatment for electrolytic surface roughening treatment of aluminum or aluminum alloy material, characterized by degreasing and melting the surface of aluminum or aluminum alloy material and forming an oxide film at the same time by electrolyzing by flowing direct current or alternating current. It's a method.
本発明では、硫酸を含む電解液中にアルミニウム又はア
ルミニウム合金材が浸漬することによ）、核材の表面に
ある金属醗化物皮膜が化学的に溶解することに基づいて
表面に強く付着している加工油剤や酸化物質が複雑にか
らみ合った汚れが脱落し、あるいは加工変質層が溶解し
、さらに該電解液中でアルミニウム若しくはアルミニウ
ム合金材をそれと対向する電極との関係で陽極とし、そ
れにより発生する酸素ガスによりて表面の加工油剤など
の有機質の汚れを酸化分解などを生じさせて。In the present invention, when the aluminum or aluminum alloy material is immersed in an electrolytic solution containing sulfuric acid, the metal fluoride film on the surface of the core material is chemically dissolved, so that it strongly adheres to the surface. The contaminants that are intricately intertwined with machining oil and oxidation substances will fall off, or the machining-affected layer will dissolve, and furthermore, in the electrolyte, aluminum or aluminum alloy material will be used as an anode in relation to the electrode facing it. The generated oxygen gas causes oxidation and decomposition of organic dirt such as processing oil on the surface.
表面を清浄化することができる。また、そのさい核材の
表面における酸素の生成によシ清浄化された核材の表面
に薄い陽極酸化皮膜が生成するので、表面状態のバラツ
キの小さな均質な表面を短時間で得ることが可能になる
。The surface can be cleaned. In addition, a thin anodic oxide film is formed on the surface of the cleaned core material due to the generation of oxygen on the surface of the core material, making it possible to obtain a homogeneous surface with little variation in surface condition in a short time. become.
このようにして得られたアルミニウムまたはアルミニウ
ム合金材の表面は電解粗面化処理をムラなくおこなうに
あたって最適な状態となる。The surface of the aluminum or aluminum alloy material obtained in this manner is in an optimal state for evenly performing electrolytic surface roughening treatment.
本発明で電解粗面化のための前処理に使用する電解液と
しては硫酸を含む電解液が用いられ、とくに好適なもの
は硫酸５０〜６００９／ｌ を含む水溶液である。電解
液としては硫酸の外に他の酸、例えば塩酸、硝酸、有機
酸を含有させても良い。As the electrolytic solution used in the pretreatment for electrolytic surface roughening in the present invention, an electrolytic solution containing sulfuric acid is used, and a particularly preferred one is an aqueous solution containing 50 to 6009/l of sulfuric acid. In addition to sulfuric acid, the electrolytic solution may contain other acids such as hydrochloric acid, nitric acid, and organic acids.
また、電流密度は０．１〜５０Ａ／ｄｍ”であることが
好ましい。電解処理時間は余シ長過ぎても短か過ぎても
、その後に施す電解粗面化工程での均一なムラのない粗
面化処理面が得られず、０．５〜１２０秒の範囲にある
ことが望ましく、特に５〜６０秒の範囲にあることが好
ましい。In addition, the current density is preferably 0.1 to 50 A/dm. Even if the electrolytic treatment time is too long or too short, the subsequent electrolytic surface roughening process will be uniform and uneven. Since no roughened surface is obtained, the heating time is preferably in the range of 0.5 to 120 seconds, particularly preferably in the range of 5 to 60 seconds.
なお、電解処理は、２０〜９０℃の温度範囲で実施され
る。本発明による電解方法は、回分法、半連続法、連続
法のいづれにも適用できる。Note that the electrolytic treatment is carried out at a temperature range of 20 to 90°C. The electrolysis method according to the present invention can be applied to any of the batch method, semi-continuous method, and continuous method.
本発明方法に用いられる電圧波形としては、サイリスタ
またはダイオード９を用いて制御した三相全波整流波形
、連続直流波形、断続直流波形、若しくは交流波形など
を用いてよい。The voltage waveform used in the method of the present invention may be a three-phase full-wave rectified waveform controlled using a thyristor or diode 9, a continuous DC waveform, an intermittent DC waveform, or an AC waveform.
本発明においては、第１表に示すように電解量とその後
に施す電解粗面化工程での処理ムラの間には、ある相関
関係があシ、電解量や電解条件を加減することによシ、
電解粗面化処理後の表面状態を調整することができる。In the present invention, as shown in Table 1, there is a certain correlation between the amount of electrolysis and the treatment unevenness in the subsequent electrolytic roughening process, and it is possible to adjust the amount of electrolysis and the electrolytic conditions. C,
The surface condition after electrolytic roughening treatment can be adjusted.
第１表
Ｏ処理ムラなし
Δ やや処理ムラあυ
Ｘ 処理ムラなし
仁のときの前処理条件としては、硫酸２５％を含む水溶
液、５０℃で直流電流密度２５ｄ−で電解処理をおζな
った。電解粗面化処理条件は、硝酸２俤を含む水溶液４
０℃で、交流電流密度４０ Ａ７’ｄｔｔ？で電解処理
をおこなった。Table 1 O No uneven treatment Δ Slightly uneven treatment υ . The electrolytic surface roughening treatment conditions were as follows: 4 volumes of an aqueous solution containing 2 volumes of nitric acid.
At 0°C, the AC current density is 40 A7'dtt? Electrolytic treatment was performed.
また、電解粗面化処理時の微視的形状も前処理工程の電
解条件と密接な関係にあシ、前処理工程の電解条件を変
えることで電解粗面化処理後の表面の微視的形状も制御
することができる。In addition, the microscopic shape during electrolytic roughening treatment is closely related to the electrolytic conditions in the pretreatment process, and by changing the electrolytic conditions in the pretreatment process, the microscopic shape of the surface after electrolytic roughening treatment can be changed. The shape can also be controlled.
処理するアルミニウム又はアルミニウム合金材の形状は
板状、シート状、帯状（ウェブ）のいずれでもよい。The aluminum or aluminum alloy material to be treated may be in the form of a plate, sheet, or web.
本発明の実施に用いることができる装置の一例を第１図
に示す。１は電解槽、２は処理すべきアルミニウム若し
くはアルミニウム合金帯、３は電解液、４は電極、５は
電源、６は給液ノズル、７は排液管を示す。An example of an apparatus that can be used to practice the invention is shown in FIG. 1 is an electrolytic cell, 2 is an aluminum or aluminum alloy strip to be treated, 3 is an electrolytic solution, 4 is an electrode, 5 is a power source, 6 is a liquid supply nozzle, and 7 is a drain pipe.
次に、本発明を実施例により具体的に説明するが、本発
明はこの実施例によって限定されるものではない。Next, the present invention will be specifically explained using examples, but the present invention is not limited to these examples.
実施例 １゜
Ｊ工Ｓ １１００−Ｈ１６アルミニウム圧延板を硫酸δ
憾を含む水溶液からなシ、液温が５０’Ｃの電解液中に
陽極とし、これに対向する電極を設け、両電極間にサイ
タリスを用いた三相全波整流波形の電流を流し、電流密
度２Ａ／ｄｌで５秒間電解処理を行りた０
そして水洗後、硝酸２％を含む水溶液中４０’Ｃで、ア
ルミニウム板とそれに対向する電極との間に正弦波交流
電圧を印加し、電流密度４ＯＮ’Ｍでω秒間電解粗面化
処理をおこなった。Example 1゜J-S 1100-H16 aluminum rolled plate was treated with sulfuric acid δ
An anode is placed in an electrolytic solution with a liquid temperature of 50'C, an electrode is provided opposite the anode, and a three-phase full-wave rectified current using a cytalis is passed between the two electrodes. Electrolytic treatment was performed for 5 seconds at a density of 2 A/dl. After washing with water, a sinusoidal AC voltage was applied between the aluminum plate and the electrode facing it at 40'C in an aqueous solution containing 2% nitric acid, and the current was Electrolytic surface roughening treatment was performed for ω seconds at a density of 4ON'M.
このようにして得られたアルミニウム粗面板の表面は均
一な粗面化処理がおこなわれておシ、処理ムラの存在は
認められなかった。The surface of the aluminum roughened plate thus obtained was uniformly roughened, and no treatment unevenness was observed.
また、このアルミニウム粗面板を硫酸４０嗟を含む水溶
液、液温６５’Ｃへ（資）秒間浸漬し、電解粗面化処理
にて生成したスマットを除去した後、走査型電子顕微鏡
で観察したところ均一な凹凸形状の粗面化がおこなわれ
ていた。In addition, this rough aluminum plate was immersed in an aqueous solution containing 40 mg of sulfuric acid at a temperature of 65'C for (4) seconds to remove the smut generated during electrolytic roughening treatment, and then observed with a scanning electron microscope. The surface was roughened with uniform irregularities.
実施例 ２
Ｊ工Ｓ １１００−Ｈ２Ｓ アルミニウム圧延板を硫
酸２５優を含む水溶液からなり、液温が父℃の電解液中
に陽極とし、それに対向する電極を設け、両電極間に商
用交流をサイリスタを用いて位相制御した交流電流を流
し、電流密度２ ）ｙ’ｄｍ”で１０秒間電解処理をお
こなりた。そして水洗後、硝酸２チを含む水溶液中４０
℃で、アルミニウム板とそれに対向する電極との間に正
弦波交流電圧を印加し、電流密度４０功−でω秒間電解
粗面化処理をおこなりた０
このようにして得られたアルミニウム粗面板の表面は均
一な粗面化処理がおこなわれておシ、処理ムラの存在は
認められなかりた。Example 2 J Engineering S 1100-H2S A rolled aluminum plate was used as an anode in an electrolytic solution containing 25% of sulfuric acid and the temperature of the solution was 0°C, an electrode was provided opposite the anode, and a commercial alternating current was connected between the two electrodes using a thyristor. Electrolytic treatment was performed for 10 seconds at a current density of 2)y'dm'' by passing a phase-controlled alternating current using a
℃, a sinusoidal AC voltage was applied between the aluminum plate and the electrode facing it, and electrolytic surface roughening treatment was performed for ω seconds at a current density of 40°C.The roughened aluminum plate thus obtained was The surface was uniformly roughened and no unevenness was observed.
また、このアルミニウム粗面板を硫酸４０１を含む水溶
液、液温６５’Ｃへ（資）秒間浸漬し、電解粗面化処理
にて生成したスマットを除去した後、走査型電子顕微鏡
で観察したところ均一な凹凸形状の粗面化がおとなわれ
ていた。In addition, this aluminum roughened plate was immersed in an aqueous solution containing sulfuric acid 401 at a temperature of 65'C for several seconds to remove the smut generated during electrolytic roughening treatment, and then observed with a scanning electron microscope to find that it was uniform. The roughening of the uneven shape was taking place.
本発明は従来アルカリまたは酸性水溶液への浸漬によっ
ておこなわれている電解粗面化処理のための前処理を電
解処理によって高速におこない、かつ均一に洗浄された
電解粗面化処理に適した表面状態を確実に得ることを可
能とするものである。The present invention uses electrolytic treatment to rapidly perform pretreatment for electrolytic surface roughening treatment, which is conventionally performed by immersion in an alkaline or acidic aqueous solution, and provides a uniformly cleaned surface suitable for electrolytic roughening treatment. This makes it possible to reliably obtain the following.
また、本発明は第２図の従来方法のフローシートの一例
に示されるような電解粗面化処理のための前処理工程を
第３図の本発明のフローシートに示されるような前処理
工程へと処理工程を簡略化することが可能となる。Furthermore, the present invention replaces the pretreatment step for electrolytic surface roughening treatment as shown in the flow sheet of the conventional method shown in FIG. 2 with the pretreatment step shown in the flow sheet of the present invention shown in FIG. It becomes possible to simplify the processing steps.
しかも、本発明では、酸性水溶液を使った電解処理によ
るため、従来の酸性水溶液への浸漬に比べて液温を低く
、かつ処理時間を短かくでき、アルカリ水溶液への浸漬
に比べて被処理材料の急漱な溶解反応がなく、工程の安
定性が向上する。また、電解処理によるため、電流密度
１通電時間などによシ、容易に工程を制御することがで
きる。Furthermore, since the present invention uses electrolytic treatment using an acidic aqueous solution, the solution temperature can be lower and the treatment time can be shorter than in conventional immersion in an acidic aqueous solution, and the material to be treated can be treated more easily than in an alkaline aqueous solution. There is no rapid dissolution reaction, and the stability of the process is improved. In addition, since electrolytic treatment is used, the process can be easily controlled by adjusting the current density per current application time, etc.
第１図は、本発明の実施に用いられる装置の一例を示す
。第２図は従来のアルカリ水溶液を使用した処理工程の
７０−シート、第３図は本発明による処理工程のフロー
シートを示す。
１：電解槽 ２ニアルミニウム帯３：電解液
４：電極
５：電源 ６：給液ノズル
７：排液管
代理人 弁理士（８１０７）佐々木清隆・（ほか３名）
。
第 ２ 図
第 ３ 図FIG. 1 shows an example of an apparatus used to implement the present invention. FIG. 2 shows a 70-sheet of a treatment process using a conventional alkaline aqueous solution, and FIG. 3 shows a flow sheet of a treatment process according to the present invention. 1: Electrolytic cell 2 Nialuminum band 3: Electrolyte
4: Electrode 5: Power supply 6: Liquid supply nozzle 7: Drainage pipe agent Patent attorney (8107) Kiyotaka Sasaki (3 others)
. Figure 2 Figure 3
Claims (3)
粗面化処理のための前処理方法において、硫酸を含む電
解液中でアルミニウム若しくはアルミニウム合金材に対
して、それと対向する電極との間に、直流電流又は交流
電流を流して電解し、アルミニウム若しくはアルミニウ
ム合金材の表面を脱脂並びに溶解すると同時に酸化皮膜
を形成することを特徴とするアルミニウム若しくはアル
ミニウム合金材の電解粗面化処理のための前処理方法。(1) In a pretreatment method for electrolytic surface roughening treatment of aluminum or aluminum alloy material, a direct current or A pretreatment method for electrolytic surface roughening treatment of aluminum or aluminum alloy material, which comprises degreasing and melting the surface of aluminum or aluminum alloy material and forming an oxide film at the same time by electrolyzing the surface of aluminum or aluminum alloy material by passing an alternating current.
液であることを特徴とする特許請求の範囲第１項記載の
電解粗面化処理のための前処理方法。(2) The pretreatment method for electrolytic surface roughening treatment according to claim 1, wherein the electrolytic solution is an aqueous solution containing 50 to 600 g/l of sulfuric acid.
波形又は交流電圧波形をもつ電流を用いることを特徴と
する特許請求の範囲第１項記載の電解粗面化処理のため
の前処理方法。(3) For the electrolytic surface roughening treatment according to claim 1, wherein a current having a DC voltage waveform or an AC voltage waveform with a current density of 0.1 to 50 A/dm^2 is used. Pretreatment method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6798087A JPS63235500A (en) | 1987-03-24 | 1987-03-24 | Pretreatment for electrolytic surface roughening treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6798087A JPS63235500A (en) | 1987-03-24 | 1987-03-24 | Pretreatment for electrolytic surface roughening treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63235500A true JPS63235500A (en) | 1988-09-30 |
Family
ID=13360642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6798087A Pending JPS63235500A (en) | 1987-03-24 | 1987-03-24 | Pretreatment for electrolytic surface roughening treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63235500A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0472097A (en) * | 1990-07-10 | 1992-03-06 | Nkk Corp | Electrolytic cleaning method |
| JP2007270217A (en) * | 2006-03-30 | 2007-10-18 | Fujifilm Corp | Electrolytic treatment method and apparatus and method and apparatus for manufacturing planographic printing plate |
-
1987
- 1987-03-24 JP JP6798087A patent/JPS63235500A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0472097A (en) * | 1990-07-10 | 1992-03-06 | Nkk Corp | Electrolytic cleaning method |
| JP2007270217A (en) * | 2006-03-30 | 2007-10-18 | Fujifilm Corp | Electrolytic treatment method and apparatus and method and apparatus for manufacturing planographic printing plate |
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