JPH0449181Y2 - - Google Patents
Info
- Publication number
- JPH0449181Y2 JPH0449181Y2 JP12726888U JP12726888U JPH0449181Y2 JP H0449181 Y2 JPH0449181 Y2 JP H0449181Y2 JP 12726888 U JP12726888 U JP 12726888U JP 12726888 U JP12726888 U JP 12726888U JP H0449181 Y2 JPH0449181 Y2 JP H0449181Y2
- Authority
- JP
- Japan
- Prior art keywords
- semi
- shape
- electrolytic
- cathode
- anode
- 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
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 229910052799 carbon Inorganic materials 0.000 claims description 13
- 238000004040 coloring Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 238000011282 treatment Methods 0.000 claims description 9
- 238000007743 anodising Methods 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 14
- 229910052782 aluminium Inorganic materials 0.000 description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 13
- 238000005868 electrolysis reaction Methods 0.000 description 10
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- FFRBMBIXVSCUFS-UHFFFAOYSA-N 2,4-dinitro-1-naphthol Chemical compound C1=CC=C2C(O)=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 FFRBMBIXVSCUFS-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- POVGIDNLKNVCTJ-UHFFFAOYSA-J cobalt(2+);nickel(2+);disulfate Chemical compound [Co+2].[Ni+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O POVGIDNLKNVCTJ-UHFFFAOYSA-J 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Description
［産業上の利用分野］
本考案は、主としてアルミニウム系材料に適用
されている陽極酸化、電解着色などの電解処理に
使用する電解槽用の陰極の構造に関し、より具体
的には陽極酸化処理自体と、陽極酸化処理を前工
程とし、この陽極酸化処理材にさらに積極的に着
色する場合の後工程である電解着色工程などにも
使用され、電解槽内に浸漬されて一方の電極とな
る陰極の形状の改良に関するものである。
［従来の技術］
アルミニウム、マグネシウムなどの金属材料の
表面に、これらの金属と酸素との安定且つ強固な
酸化物を形成するために最も適切なものとして採
用されている方法としては、陽極酸化処理と、必
要に応じその後続工程として特に着色の目的で行
なわれる電解着色法とがある。
陽極酸化処理では、電解槽中にりん酸、蓚（し
ゆう）酸、クロム酸、硫酸などの電解液を充し電
解槽中に被処理材となるアルミニウムなどの被処
理材を陽極とし、炭素、アルミニウムなどを陰極
として対向、浸漬して配置した上で通電すると、
電解現象により黒鉛などの陰極からは水素が発生
するが、陽極であるアルミニウムの表面には酸化
されて化学的に安定な酸化アルミニウムの層が形
成される。この酸化アルミニウムの皮膜は、その
ままでもアルマイトと呼ばれ腐食防止のための耐
食保護皮膜として使用され、皮膜自体の色に着色
される。しかしながら、このような皮膜自体の色
では使用目的に合致しない場合には、さらに、
赤、青、緑、茶、黄金色その他所望の色で且つ光
沢を有する状態に積極的に着色する。
このためには、陽極酸化処理された被処理材を
硫酸ニツケル−硫酸コバルト混合浴などの電解浴
中に浸漬して陽極とし、カーボン、ステンレス鋼
などを対極（直流電解での陰極に相当）として通
電し着色させる交流電解着色法と、交流法と同様
に通常の方法で陽極酸化処理されたアルミニウム
合金などを陽極として、種々の金属塩を含む水溶
液中に配置し直流電解を行なうことにより着色す
る直流電解着色法とがある。
前記の陽極酸化処理と電解着色とは、アルミニ
ウムまたはその合金の表面処理中、電解現象を利
用する処理法として代表的なものであり、電解に
際し電解浴中で被処理材である陽極に対向し配置
される陰極としては、硫酸法やしゆう酸法では黒
鉛、鉛、アルミニウムが使用され、一方、クロム
酸法では軟鋼、ステンレス鋼などが用いられる。
交流電解の場合の対極としては、黒鉛がもつと
も適切であるとされている。
このように直流、交流電解を通じ、黒鉛電極を
使用する場合が多い。
陽極酸化処理用の陰極板としては、鉛板、ステ
ンレス鋼板、アルミニウム板などの可溶性電極板
とカーボン板またはカーボン棒などの不溶性電極
が使用されるが、最近の傾向としてはアルミニウ
ム板またはアルミニウムの押し出し加工品が使用
されていいる。
電解着色用としては直流電解、交流電解および
交直併用電解の場合があり、被処理材である陽極
に電解作用を与えるために使用される電極は直流
電解では陰極と称し、交流を使用する場合は対極
と称される。
電極材料としては可溶性の純ニツケル板、不溶
性のカーボン棒などが多用される。
カーテンウオールなどには可溶性電極、サツシ
などの電解には不溶性のカーボン電極を用いる。
電解着色の場合は、酸化皮膜処理用の陰極板に
比較し加工困難なので、不溶性のカーボン電極で
は直径が20〜80mmの角棒、または丸棒を多数個、
ブロツクとして整列させ垂直にして電解槽の深さ
にほぼ等しい長さとして、槽内に設置し吊り棒な
どで固定する。
陽極中心部の電流分布を大にする必要があるの
で陰極面積が大きくなるようにし、一般的には陰
極面積を陽極面積の２分の１以上にするなどの処
置が取られている。
［考案が解決すべき課題］
従来使用されているカーテン陰極ブロツクは大
別すると２種あり、第１番目のものは第２図のよ
うに、中空円筒状のブロツクの内周に雌ネジを切
り、複数個のブロツク１ａ，１ｂの各々を軸方向
に突き合わせて雌ネジ２で次々に結合して一本の
陰極とし、これらを軸方向に連結して電解槽内に
設置するものである。
第２番目のタイプは第３図のように、縦および
横の断面が長方形の四角柱状のブロツク１を縦方
向に１〜３個程度接続し、コの字型断面枠を少な
くとも有する（図では３ａ，３ｂの２個）枠体に
挿入し横方向には多数個を連接して槽内に配置す
る。
電流分布を大にするには陰極の表面積を大きく
すればよいので、ニツケル、ステンレス鋼、アル
ミニウムなどの金属を陰極板として使用する場合
には、それらの金属陰極は十分な靭性を有するの
で、第４図に示すように山形状、ハツト形状、波
板状、アングル状などに成形して表面積を大きく
することが可能であつた。
しかし、陰極材料としてカーボンを使用する必
要がある場合、カーボンは前記の陰極用金属材料
に比較すると靭性に乏しく脆いため、前記のよう
に山形板、ハツト形板などの横に広くて凹凸のあ
る形状に成形すると、電解操作の間や中間の取扱
中の僅かの衝撃によつて折損したり、クラツクが
発生するため表面積の大なる変形板とするのは困
難なので、止を得ず単に円筒状あるいは扁平な角
柱状として横に並列させて配置することで甘んじ
ていたものである。
［課題を解決するための手段］
本考案の考案者らは、丸棒状または円管状の陰
極の陽極に対向する側の半周の外郭を、小円また
は楕円の長軸側の一端部を複数個（２〜６程度）
連続させてサインカーブに似た花弁状とし、陽極
に対向しない側の半分は半円周のままとし主とし
て強度を負担させるようにし、前記花弁状に形成
した陽極に対向する部分は表面積を増大をすると
共に、ある程度の強度を保持するようにして、永
年未解決であつた課題を解決したものである。
［作用］
花弁状に形成して陽極に対向するようにした部
分は、表面積が大きいので電流分布を増大するの
に寄与するとともに、半円柱部にほぼ匹敵する程
度の強度を有し、陽極に対向する部の反対側の半
円柱部は専ら強度を保つ役目を分担し、全体とし
て従来の陰極で未解決だつた課題を解決できる。
［実施例］
以下、第１図を参照して本考案の波形カーボン
電極棒の実施例について説明する。
第１図Ａは側断面図で、同図Ｂは拡大断面図、
同図Ｃは取付け用先端部の平面図である。
この実施例のカーボン電極１０は炭素粉を原料
として押出し成型などで第１図Ａに示すような所
定の形状にする。
この実施例では、被処理アルミ材に対向する半
周部１０″には断面で４本の山１１′を有する歯１
１が切られた半円筒状歯車のような形状にされ、
各歯の山１１′間の角度は36°で谷部１１″と山部
１１′とから成る歯形面は同じ曲率のサインカー
ブ状曲面で構成されている。
谷部１１″が曲面にされていることにより、鋭
角のノツチの場合に発生しやすい切欠き効果によ
るクラツクの発生を防止できる。
寸法的に破損の懸念が少ない場合には山部と谷
部を三角形にした三角柱状にしてもよい。
このようにして成形されたこの電極の取付側先
端、すなわち電界槽の液面より上に位置する部分
１４は扁平にされた上、ブスバー（図示せず）に
接続するための銅板との装着に便利なように貫通
孔１５が開けられる。
通常、長さが２〜3m程度の場合には、縦には
１本だけを単独に使用するが、電解槽の深さが
3m以上の場合には縦に２〜４本を接続して使用
するなど電解槽の大きさに応じて縦および横に接
続して使用する。
この実施例では、電極の半円柱面に形成された
サインカーブ状の歯の数を４個として示したが、
４個に限定されるものではなく、通常２〜８程度
の複数の歯を任意に設けてよい。電極の径が大き
い場合には８以上でもよいが余り多くしても効果
は少ない。
第１図Ｄの電極棒の全長に対する反りを模式的
に示したもので、反りの率が0.5％以内であれば
許容範囲内として使用出来る。
次に、３種の電解条件Ａ，ＢおよびＣについて
従来の丸棒状の陰極と本考案の波形電極棒の半周
の表面積係数を比較した結果を示す。
本考案の電極棒では下記のように表面積が15〜
25％上昇することが認められた。
このことから、本考案の電極棒を使用すること
により、電流分布が上昇し電解処理の時間の短縮
または製品の質を向上させることができる。
[Field of Industrial Application] The present invention relates to the structure of a cathode for an electrolytic cell used in electrolytic treatments such as anodizing and electrolytic coloring, which are mainly applied to aluminum-based materials, and more specifically, the anodizing process itself. The anodizing treatment is the pre-process, and the anodized material is also used in the post-process electrolytic coloring process to further actively color the anodized material. This relates to improving the shape of. [Prior Art] The most suitable method for forming stable and strong oxides of these metals and oxygen on the surface of metal materials such as aluminum and magnesium is anodizing. and an electrolytic coloring method, which is carried out specifically for the purpose of coloring as a subsequent step if necessary. In anodizing, an electrolytic bath is filled with an electrolytic solution such as phosphoric acid, oxalic acid, chromic acid, or sulfuric acid, and the material to be treated, such as aluminum, is used as an anode. , aluminum or the like is placed as a cathode, facing each other and immersed, and then energized,
Hydrogen is generated from a cathode made of graphite or the like due to electrolytic phenomena, but the surface of aluminum, which is the anode, is oxidized to form a chemically stable layer of aluminum oxide. This aluminum oxide film is called alumite and is used as a corrosion-resistant protective film to prevent corrosion, and is colored to match the color of the film itself. However, if the color of the film itself does not match the intended use,
It is actively colored in a desired color such as red, blue, green, brown, golden yellow, and in a glossy state. For this purpose, the anodized material is immersed in an electrolytic bath such as a nickel sulfate-cobalt sulfate mixture bath to serve as the anode, and carbon, stainless steel, etc. is used as the counter electrode (equivalent to the cathode in DC electrolysis). The AC electrolytic coloring method involves applying electricity to color the product, and the other is the AC electrolytic coloring method, which uses a conventionally anodized aluminum alloy as an anode, placed in an aqueous solution containing various metal salts, and colors the product by performing DC electrolysis. There is a direct current electrolytic coloring method. The above-mentioned anodic oxidation treatment and electrolytic coloring are typical treatment methods that utilize electrolytic phenomena during surface treatment of aluminum or its alloys. As the cathode, graphite, lead, or aluminum is used in the sulfuric acid method or the oxalic acid method, while mild steel, stainless steel, or the like is used in the chromic acid method. Graphite is said to be most suitable as a counter electrode in AC electrolysis. In this way, graphite electrodes are often used through direct current and alternating current electrolysis. As cathode plates for anodizing treatment, soluble electrode plates such as lead plates, stainless steel plates, and aluminum plates, and insoluble electrodes such as carbon plates or carbon rods are used, but the recent trend is to use aluminum plates or extruded aluminum plates. Processed products are used. For electrolytic coloring, there are three types: DC electrolysis, AC electrolysis, and AC/DC combined electrolysis.The electrode used to apply electrolytic action to the anode, which is the material to be treated, is called the cathode in DC electrolysis, and when AC is used, it is called the cathode. It is called the opposite. As electrode materials, soluble pure nickel plates, insoluble carbon rods, etc. are often used. Soluble electrodes are used for curtain walls, etc., and insoluble carbon electrodes are used for electrolysis of sashes, etc. In the case of electrolytic coloring, it is difficult to process compared to cathode plates for oxide film treatment, so insoluble carbon electrodes require a large number of square rods or round rods with a diameter of 20 to 80 mm.
The blocks are lined up vertically and the length is approximately equal to the depth of the electrolytic cell, and the blocks are placed inside the cell and fixed with hanging rods. Since it is necessary to increase the current distribution at the center of the anode, the area of the cathode is made large, and measures are generally taken to make the area of the cathode one-half or more of the area of the anode. [Problems to be solved by the invention] There are two types of curtain cathode blocks that have been used in the past. , a plurality of blocks 1a and 1b are axially butted against each other and connected one after another with female screws 2 to form a single cathode, which is connected axially and installed in an electrolytic cell. The second type, as shown in Fig. 3, has about 1 to 3 quadrangular prism-shaped blocks 1 with rectangular vertical and horizontal cross sections connected in the vertical direction, and has at least a U-shaped cross-sectional frame (in the figure). 3a and 3b) are inserted into the frame, and a large number of them are connected in the horizontal direction and arranged in the tank. In order to increase the current distribution, it is sufficient to increase the surface area of the cathode. Therefore, when using metals such as nickel, stainless steel, and aluminum as the cathode plate, these metal cathodes have sufficient toughness, so As shown in Figure 4, it was possible to increase the surface area by forming into a mountain shape, a hat shape, a corrugated plate shape, an angle shape, etc. However, when it is necessary to use carbon as a cathode material, carbon has poor toughness and is brittle compared to the metal materials for cathodes described above, so it is necessary to use carbon that is wide and uneven on the sides of the chevron-shaped plate, hat-shaped plate, etc. as described above. When formed into a shape, it is difficult to make a deformable plate with a large surface area because it may break or crack due to a slight impact during the electrolysis operation or intermediate handling. Alternatively, they were content with arranging them horizontally in a flat prismatic shape. [Means for Solving the Problems] The inventors of the present invention have constructed a plurality of small circles or ellipsoids, one end of which is on the long axis side, by forming a half circumference of the cathode in the form of a round rod or a circular tube, on the side facing the anode. (about 2-6)
They are made into a continuous petal-like shape resembling a sine curve, and the half of the side not facing the anode remains semicircular to mainly bear the strength, while the part facing the anode formed in the petal-shape has an increased surface area. At the same time, it maintains a certain degree of strength, solving a problem that had remained unresolved for many years. [Function] The petal-shaped part facing the anode has a large surface area, so it contributes to increasing the current distribution, and has a strength almost comparable to that of a semi-cylindrical part, so it does not face the anode. The semi-cylindrical portion on the opposite side of the opposing portion exclusively plays the role of maintaining strength, and as a whole it is possible to solve the problems that remained unresolved with conventional cathodes. [Example] Hereinafter, an example of the corrugated carbon electrode rod of the present invention will be described with reference to FIG. Figure 1A is a side sectional view, Figure 1B is an enlarged sectional view,
Figure C is a plan view of the mounting tip. The carbon electrode 10 of this embodiment uses carbon powder as a raw material and is formed into a predetermined shape as shown in FIG. 1A by extrusion molding or the like. In this embodiment, a tooth 1 having four ridges 11' in cross section is provided on the half circumferential portion 10'' facing the aluminum material to be treated.
It is shaped like a semi-cylindrical gear with 1 cut out,
The angle between the crests 11' of each tooth is 36 degrees, and the tooth profile surface consisting of the troughs 11'' and crests 11' is a sine curved surface with the same curvature.The troughs 11'' are curved. This can prevent the occurrence of cracks due to the notch effect that tends to occur with acute-angled notches. If there is little risk of damage due to dimensions, a triangular prism shape with triangular peaks and valleys may be used. The mounting end of the electrode formed in this way, that is, the portion 14 located above the liquid level of the electric field tank, is flattened and is suitable for mounting with a copper plate for connecting to a bus bar (not shown). A through hole 15 is conveniently drilled. Normally, if the length is about 2 to 3 m, only one rod is used vertically, but if the depth of the electrolytic cell is
If the length is 3m or more, connect 2 to 4 cells vertically or use them vertically or horizontally depending on the size of the electrolytic cell. In this example, the number of sine curved teeth formed on the semi-cylindrical surface of the electrode is four.
The number of teeth is not limited to four, and a plurality of teeth, usually about 2 to 8, may be arbitrarily provided. If the diameter of the electrode is large, the number may be 8 or more, but if the number is too large, the effect will be small. This diagram schematically shows the warpage of the electrode rod in FIG. Next, the results of comparing the half-periphery surface area coefficients of the conventional round rod-shaped cathode and the corrugated electrode rod of the present invention under three electrolytic conditions A, B, and C will be shown. The electrode rod of this invention has a surface area of 15~
A 25% increase was observed. Therefore, by using the electrode rod of the present invention, the current distribution is increased, and the electrolytic treatment time can be shortened or the quality of the product can be improved.
【表】
［効果］
被処理材である陽極に対向する棒状電極の半周
面を連続した山と谷から成る複数の歯により形成
される凹凸面とし、残りの半周面を半円柱とする
だけでよいので、カーボン粉末から押出し成形に
より容易に成形できる。
このように複数の歯により形成される凹凸面と
された棒状電極の半周面は、その表面積が従来の
単純な半円柱状の表面積に比較して15〜25％上昇
するので電流分布もそれだけ上昇する。
また、強度の面からは、陽極に対向しない半円
柱部は強度を十分に負担し、一方陽極に対向する
凹凸面とされた棒状電極の半周面もサインカーブ
に似た花弁状の凹凸面とされた場合には、半円柱
部と殆ど同一の強度を保つので電解処理作業の間
に電極の取扱により破損する率が増大する懸念も
極めて少ない。[Table] [Effect] By simply making half the circumferential surface of the rod-shaped electrode facing the anode, which is the material to be treated, an uneven surface formed by a plurality of teeth consisting of continuous peaks and valleys, and making the remaining half circumferential surface a semicircular column. It can be easily molded from carbon powder by extrusion molding. In this way, the surface area of the semi-circumferential surface of the rod-shaped electrode, which is an uneven surface formed by multiple teeth, is increased by 15 to 25% compared to the surface area of a conventional simple semi-cylindrical shape, so the current distribution increases accordingly. do. In terms of strength, the semi-cylindrical part that does not face the anode provides sufficient strength, while the semi-circumferential surface of the rod-shaped electrode that faces the anode and has an uneven surface also has a petal-shaped uneven surface similar to a sine curve. In this case, the strength is almost the same as that of the semi-cylindrical part, so there is very little concern that the rate of damage to the electrode due to handling during electrolytic treatment will increase.
第１図Ａは本考案の好適な実施例を示す側断面
図で、同図Ｂは拡大断面図、同図Ｃは取付用先端
部の平面図、第１図Ｄは電極棒の全長に対する反
りを模式的に示した図、第２図は従来の丸棒形陰
極を示すもの、第３図は従来の角柱形陰極を示す
もので、第４図は山形状、ハツト形状、波板状、
アングル状などに成形して表面積を大にした金属
陰極版の断面形状を示す概略図である。
図面中の符号、１０……電極棒、１０′……半
円柱部、１０″……被処理アルミ材に対向する半
周部、１１……歯状曲面部、１１′……各歯の山、
１１″……各歯の谷、１４……扁平部、１５……
貫通孔。
Fig. 1A is a side sectional view showing a preferred embodiment of the present invention, Fig. 1B is an enlarged sectional view, Fig. 1C is a plan view of the mounting tip, and Fig. 1D is a warpage relative to the entire length of the electrode rod. Fig. 2 shows a conventional round bar cathode, Fig. 3 shows a conventional prismatic cathode, and Fig. 4 shows a cathode shaped like a mountain, a hat, a corrugated plate, etc.
FIG. 2 is a schematic diagram showing a cross-sectional shape of a metal cathode plate formed into an angular shape or the like to increase the surface area. Symbols in the drawings: 10...electrode rod, 10'...semi-cylindrical part, 10''...half circumferential part facing the aluminum material to be treated, 11...tooth-shaped curved surface part, 11'...mountain of each tooth,
11″... Valley of each tooth, 14... Pars plana, 15...
Through hole.
Claims (1)
解処理において電解槽内に浸漬して使用される
電解槽用カーボン陰極棒であつて、 陽極として使用される被処理材料に対向しな
い半円柱状の片面と、この片面と外径が同一で
複数の歯が形成されて被処理材料に対向する半
円筒歯車状の残りの片面とから構成される波形
カーボン陰極棒。 ２ 前記半円筒歯車状の残りの片面が断面におい
てサインカーブに近似した曲線によつて画制さ
れている請求項１に記載の波形カーボン陰極
棒。 ３ 前記半円筒歯車状の残りの片面が断面におい
て鋸歯状の凹凸直線によつて画制されている請
求項１に記載の波形カーボン陰極棒。[Scope of Claim for Utility Model Registration] 1. A carbon cathode rod for an electrolytic cell that is used by being immersed in an electrolytic cell in electrolytic treatments such as anodizing and electrolytically coloring the surface of metal materials, and a treated object used as an anode. A corrugated carbon cathode rod consisting of one side in the shape of a semi-cylindrical column that does not face the material, and the other side in the shape of a semi-cylindrical gear, which has the same outer diameter as this one side and has a plurality of teeth and faces the material to be treated. 2. The corrugated carbon cathode rod according to claim 1, wherein the remaining one side of the semi-cylindrical gear shape is defined by a curved line approximating a sine curve in cross section. 3. The corrugated carbon cathode rod according to claim 1, wherein the remaining one side of the semi-cylindrical gear shape is defined by sawtooth-like uneven straight lines in cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12726888U JPH0449181Y2 (en) | 1988-09-30 | 1988-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12726888U JPH0449181Y2 (en) | 1988-09-30 | 1988-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0251268U JPH0251268U (en) | 1990-04-10 |
| JPH0449181Y2 true JPH0449181Y2 (en) | 1992-11-19 |
Family
ID=31379545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12726888U Expired JPH0449181Y2 (en) | 1988-09-30 | 1988-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0449181Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6911812B2 (en) * | 2018-06-06 | 2021-07-28 | 信越半導体株式会社 | Anodizing equipment, anodizing method and cathode manufacturing method for anodizing equipment |
-
1988
- 1988-09-30 JP JP12726888U patent/JPH0449181Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0251268U (en) | 1990-04-10 |
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