JPH0417573Y2 - - Google Patents
Info
- Publication number
- JPH0417573Y2 JPH0417573Y2 JP1988056710U JP5671088U JPH0417573Y2 JP H0417573 Y2 JPH0417573 Y2 JP H0417573Y2 JP 1988056710 U JP1988056710 U JP 1988056710U JP 5671088 U JP5671088 U JP 5671088U JP H0417573 Y2 JPH0417573 Y2 JP H0417573Y2
- Authority
- JP
- Japan
- Prior art keywords
- lead
- electrode
- electrodes
- plating
- noble metal
- 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
- YADSGOSSYOOKMP-UHFFFAOYSA-N dioxolead Chemical compound O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 claims description 24
- 238000000576 coating method Methods 0.000 claims description 22
- 238000007747 plating Methods 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 11
- 229910000510 noble metal Inorganic materials 0.000 claims description 11
- -1 platinum group metals Chemical class 0.000 claims description 8
- 229910000978 Pb alloy Inorganic materials 0.000 claims description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 9
- 239000000758 substrate Substances 0.000 description 8
- 229910052719 titanium Inorganic materials 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- 239000002131 composite material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910052697 platinum Inorganic materials 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229910052741 iridium Inorganic materials 0.000 description 3
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical group CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- RLJMLMKIBZAXJO-UHFFFAOYSA-N lead nitrate Chemical compound [O-][N+](=O)O[Pb]O[N+]([O-])=O RLJMLMKIBZAXJO-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 229910001936 tantalum oxide Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005363 electrowinning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Prevention Of Electric Corrosion (AREA)
- Electroplating Methods And Accessories (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案はクロムメツキ用陽極に関し、特に電極
基体上に２種類の電極被覆を有する複合電極に関
するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an anode for chrome plating, and more particularly to a composite electrode having two types of electrode coatings on an electrode base.
（従来の技術）
クロムメツキに用いる電極としては、従来より
鉛、鉛合金、および二酸化鉛が知られており、現
今ではチタン等の導電性基体上に白金族金属およ
びそれらの酸化物の中間層を介して二酸化鉛を被
覆した二酸化鉛電極が鉛、鉛合金に比べ電解消耗
量が少なくスラツジの生成が僅かであることによ
りメツキ業界で注目されている。(Prior art) Lead, lead alloys, and lead dioxide have been known as electrodes used in chrome plating, and at present, intermediate layers of platinum group metals and their oxides are formed on conductive substrates such as titanium. Lead dioxide electrodes coated with lead dioxide are attracting attention in the plating industry because they have less electrolytic consumption and less sludge formation than lead or lead alloys.
しかし、鉛合金および二酸化鉛等の鉛系電極は
重いため電極交換時の作業性が悪いこと、クロム
メツキ浴中で高い分極電位を示すために電力を多
消費する等の欠点を有している。 However, lead-based electrodes such as lead alloys and lead dioxide have drawbacks such as poor workability when replacing the electrodes due to their weight, and high power consumption due to high polarization potential in the chrome plating bath.
一方、チタン等の導電性金属基体表面に白金、
イリジウム、ルテニウムなどの白金族金属および
それらの酸化物を熱分解法により被覆した貴金属
電極はクロムメツキ浴中で鉛系電極に比べて極め
て低い分極電位を示すが、三価クロムを六価クロ
ムに酸化する能力が小さく、良好なクロムメツキ
を連続して行なうことが出来ない。 On the other hand, platinum on the surface of a conductive metal substrate such as titanium,
Noble metal electrodes coated with platinum group metals such as iridium and ruthenium and their oxides using a thermal decomposition method show an extremely low polarization potential in a chrome plating bath compared to lead-based electrodes, but trivalent chromium is oxidized to hexavalent chromium. The ability to chrome plating is small, and it is not possible to continuously perform good chrome plating.
これらの問題を解決する手段として、鉛系電極
と貴金属電極を併用し、両電極の電極作用面積比
を一定範囲に保ち、両電極の有する特性を有効に
利用する試みが為されている。しかしこの方法で
は、用いる電極の種類が偏らないようにメツキ槽
内に均等に分散して取り付けないとメツキ厚みが
均一とは成らず、又、両電極の消耗が異なるため
頻繁に電極を点検して電極作用面積比を一定範囲
に保つ必要があつた。 As a means to solve these problems, attempts have been made to use lead-based electrodes and noble metal electrodes in combination, to maintain the ratio of the electrode active areas of both electrodes within a certain range, and to effectively utilize the characteristics of both electrodes. However, with this method, the plating thickness will not be uniform unless the types of electrodes used are distributed evenly in the plating tank, and the electrodes must be inspected frequently because the wear of both electrodes is different. Therefore, it was necessary to maintain the electrode active area ratio within a certain range.
（考案が解決しようとする問題点）
上記のように、鉛系電極と貴金属電極を併用す
る上で、高度なメツキ技術を要せず、平易に取り
扱うことができ、又、点検も計画して行なえる電
極の開発が望まれているのが現状である。(Problems to be solved by the invention) As mentioned above, when using lead-based electrodes and precious metal electrodes together, it is easy to handle without requiring advanced plating technology, and it is possible to plan inspections. At present, there is a desire to develop electrodes that can do this.
（問題点を解決するための手段）
本考案者らは、この問題を解決するために電極
の構造について鋭意検討した結果、白金族金属お
よび／またはそれらの酸化物からなる貴金属被覆
を電極基体上に有する電極の一部に、鉛、鉛合金
および二酸化鉛から選ばれた鉛系被覆を電極基体
上に有する電極をボルトで固定したクロムメツキ
用複合電極を考案するに至つたものである。(Means for Solving the Problem) In order to solve this problem, the inventors of the present invention made extensive studies on the structure of the electrode, and found that a noble metal coating made of platinum group metals and/or their oxides was coated on the electrode base. The inventors have devised a composite electrode for chrome plating in which an electrode having a lead-based coating selected from lead, lead alloy, and lead dioxide on the electrode base is fixed with bolts to a part of the electrode.
以下にこの考案を図面に基づいて説明する。 This invention will be explained below based on the drawings.
第１図においてフツク部５を有する基体１はチ
タン、あるいは銅などにチタンシートをクラツド
成型した板状、棒状、あるいはパイプを押し潰し
断面を楕円状としたものが用いられ、フツク部５
の折り曲げた内面には給電バーとの接触抵抗を低
減させる目的で電気メツキにより白金被覆を施す
か、あるいは白金族金属塩化物のアルコール溶液
を熱分解した導電性被覆が施される。給電バーが
メツキ液面に近く設けてある装置ではミストによ
り接触電圧が増大するので、穴を開けボルトで固
定するのが望ましい。 In FIG. 1, a base 1 having a hook portion 5 is made of titanium or copper, plate-like, rod-like, or crushed pipe with an elliptical cross section.
The bent inner surface is coated with platinum by electroplating in order to reduce the contact resistance with the power supply bar, or a conductive coating made by thermally decomposing an alcoholic solution of platinum group metal chloride is coated. In devices where the power supply bar is located close to the surface of the plating liquid, the contact voltage increases due to mist, so it is desirable to drill a hole and fix it with bolts.
本考案で使用される貴金属被覆４は、例えば特
公昭57−54555号公報に開示されたような水電解、
金属の電解採取用の被覆を挙げることができ、白
金、イリジウム、ルテニウム等の白金族金属おび
それらの酸化物、あるいはこれに酸化タンタル、
酸化ニオブ、酸化スズ、酸化コバルト等の酸化物
を混ぜたものを熱分解、電気メツキ、ブラズマ溶
射、焼結等の方法によりチタン、タンタル、ニオ
ブ、ジルコニウムまたはそれらの合金基体上に被
覆して得られるいわゆる酸素発生用不溶性電極で
ある。 The noble metal coating 4 used in the present invention can be formed by water electrolysis as disclosed in Japanese Patent Publication No. 57-54555, for example.
Coatings for electrowinning of metals include platinum group metals such as platinum, iridium, and ruthenium and their oxides, or tantalum oxide, tantalum oxide, etc.
It is obtained by coating a mixture of oxides such as niobium oxide, tin oxide, and cobalt oxide on a substrate of titanium, tantalum, niobium, zirconium, or an alloy thereof by methods such as pyrolysis, electroplating, plasma spraying, and sintering. It is a so-called insoluble electrode for oxygen generation.
又、鉛系被覆３としては、例えば特公昭58−
30957号公報および特公昭58−31396号公報に見ら
れるようなチタン等のバルブ金属基体上に白金、
イリジウム等の白金族金属、およびそれらの酸化
物の１種以上を熱分解法により薄く被覆した中間
層を設け、さらにその上に硝酸鉛浴あるいは一酸
化鉛浴などから電着した二酸化鉛電極を挙げるこ
とができる。また銀、カルシウム、錫、アンチモ
ン等の１種以上を数％含む鉛合金電極、あるいは
鉛電極等の金属の電解精練に用いられる酸素発生
用電極が使用される。 In addition, as the lead-based coating 3, for example,
30957 and Japanese Patent Publication No. 58-31396, on a valve metal base such as titanium, platinum,
An intermediate layer is formed by thinly coating a platinum group metal such as iridium and one or more of their oxides using a pyrolysis method, and a lead dioxide electrode electrodeposited from a lead nitrate bath or a lead monoxide bath is further applied on top of the intermediate layer. can be mentioned. Also used are lead alloy electrodes containing several percent of one or more of silver, calcium, tin, antimony, etc., or oxygen generating electrodes used for electrolytic refining of metals, such as lead electrodes.
同一基体上に鉛系被覆３と貴金属被覆４とを有
する本考案の電極は、例えば前記貴金属被覆４を
施した基体１に別途製作した鉛系被覆３を有する
電極をボルト２等により固定することにより製作
される。この場合、基体１の鉛系被覆３を有する
電極との接触面には耐酸化性、導電性の良好な白
金族金属、それらの合金および酸化物の被覆を介
在させて接触抵抗の低減を図る。 In the electrode of the present invention having a lead-based coating 3 and a noble metal coating 4 on the same substrate, for example, an electrode having a separately manufactured lead-based coating 3 is fixed to the substrate 1 provided with the noble metal coating 4 using bolts 2 or the like. Manufactured by. In this case, a coating of platinum group metals, alloys thereof, and oxides having good oxidation resistance and conductivity is interposed on the contact surface of the base 1 with the electrode having the lead-based coating 3 to reduce contact resistance. .
（実施例） 以下、実施例によつて本考案を説明する。(Example) The present invention will be explained below with reference to Examples.
実施例 １
巾10cm×長さ1.2ｍ×厚み８mmのチタン板の長
さ方向1/2より下部を半径40cmになるように曲げ、
トルクレンで蒸気脱脂し、10％熱シユウ酸により
エツチングして表面を粗面化した基体に、塩化白
金酸３重量部、塩化イリジウム酸１重量部、残部
イソプロパノールから成る液をハケ塗りし、自然
乾燥後大気中で500℃、１時間の焼成処理を17回
行なう熱分解法によりPt−IrO2よりなる貴金属
被覆を調整した。又、別途に巾10cm×長さ20cm×
厚み３mmのチタン板をサンドブラスト処理し、こ
の上に線径0.4mm、24メツシユのチタン製金網を
スポツト溶接し、周辺部を巾５mm×厚み１mmのチ
タン製押さえ板でさらにスポツト溶接して補強
し、鉛系被覆の基体とし、この基体をトルクレン
脱脂し、３％フツ酸でエツチングを行ない、塩化
イリジウム酸のエタノール溶液をハケ塗りした後
乾燥し、大気中450℃、30分間の加熱処理を３回
繰り返して硝酸鉛250ｇ／、硝酸銅25ｇ／か
らなる電着液中で陽極電流密度2.5A／ｄm2、液
温60℃、PH4.0の条件で14時間電着を行ない作成
した二酸化鉛電極を、前記貴金属被覆を施した基
体に10mmφのボルト４本で固定し複合電極を製作
した（第１図）。Example 1 A titanium plate with a width of 10 cm, a length of 1.2 m, and a thickness of 8 mm was bent from 1/2 of the length to a radius of 40 cm.
A solution consisting of 3 parts by weight of chloroplatinic acid, 1 part by weight of chloroiridic acid, and the balance is isopropanol was brushed onto the substrate, which had been vapor-degreased with Torquelen and etched with 10% hot oxalic acid to roughen the surface, and then dried naturally. A noble metal coating made of Pt--IrO 2 was prepared by a pyrolysis method in which calcination treatment was performed 17 times at 500° C. for 1 hour in the atmosphere. Also, separately available width 10cm x length 20cm
A 3mm thick titanium plate was sandblasted, a 24 mesh titanium wire mesh with a wire diameter of 0.4mm was spot welded onto it, and the periphery was further spot welded and reinforced with a 5mm wide x 1mm thick titanium holding plate. The base was coated with lead, and this base was degreased with Torquelen, etched with 3% hydrofluoric acid, coated with an ethanol solution of chloroiridic acid with a brush, dried, and heat-treated in the atmosphere at 450°C for 30 minutes. A lead dioxide electrode was prepared by repeating electrodeposition for 14 hours in an electrodeposition solution containing 250 g of lead nitrate and 25 g of copper nitrate at an anode current density of 2.5 A/dm 2 , solution temperature of 60°C, and pH of 4.0. was fixed to the noble metal coated substrate with four bolts of 10 mm diameter to produce a composite electrode (Figure 1).
この電極20体をロールメツキ装置の給電バーに
左右10体ずつ取り付け、無水クロム酸250ｇ／、
硝酸2.5ｇ／のサージエント浴中において、メ
ツキ電流3200A、浴温50℃で、直径20cm×長さ
1.3ｍのグラビア製版ロールにて硬質クロムメツ
キを行なつた。従来は本考案と同一寸法の電極を
前記貴金属電極と二酸化鉛電極を10体ずつ製作
し、メツキ槽内に均等になるように取り付けてメ
ツキを行なつていたが、二酸化鉛電極が大型であ
るために、応力により剥離するため２〜３週毎に
電極を引き上げて点検し、電極作用面積比を管理
値に保つ必要があつた。本考案の電極を用いた場
合は半年毎の点検で良かつた。 20 of these electrodes were attached to the power supply bar of the roll plating machine, 10 on each side, and 250 g of chromic anhydride/
In a sergeant bath containing 2.5 g of nitric acid, at a plating current of 3200 A and a bath temperature of 50°C, diameter of 20 cm x length.
Hard chrome plating was performed using a 1.3m gravure plate making roll. Previously, plating was performed by manufacturing 10 noble metal electrodes and 10 lead dioxide electrodes with the same dimensions as the present invention, and installing them evenly in the plating tank, but the lead dioxide electrodes were large. Because of this, it was necessary to pull up and inspect the electrode every 2 to 3 weeks to maintain the electrode working area ratio at a controlled value, since the electrode would peel off due to stress. When the electrode of the present invention was used, it was sufficient to inspect it every six months.
（考案の効果）
白金族金属および／またはそれらの酸化物から
なる貴金属被覆を電極基体上に有する電極の一部
に、鉛、鉛合金および二酸化鉛から選ばれた鉛系
被覆を電極基体上に有する電極をボルトで固定し
たクロムメツキ用複合電極を用いることにより、
電極の規格が一種類となり、メツキ作業に未熟な
人間でも良好なメツキが平易に出来るようになつ
た。又、二酸化鉛電極の場合は、従来に比べて電
極が小型になつたため応力によるクラツクの発
生、剥離が少なくなり寿命が大幅に延長できた。
このため点検も半年毎の定期的なもので良く、電
極の交換も容易である。(Effect of the invention) A lead-based coating selected from lead, lead alloys, and lead dioxide is applied to a part of the electrode that has a noble metal coating made of platinum group metals and/or their oxides on the electrode substrate. By using a composite electrode for chrome plating that has an electrode fixed with bolts,
There is now one type of electrode standard, and even people who are inexperienced in plating can now easily perform good plating. Furthermore, in the case of lead dioxide electrodes, the electrodes are smaller than conventional electrodes, which reduces the occurrence of cracks and peeling due to stress, and significantly extends the life of the electrodes.
Therefore, regular inspections only need to be carried out every six months, and the electrodes can be easily replaced.
第１図は本考案の一実施例を示す複合電極であ
る。
１……基体、２……ボルト、３……鉛系被覆、
４……貴金属被覆、５……フツク部。
FIG. 1 shows a composite electrode showing one embodiment of the present invention. 1...Base body, 2...Bolt, 3...Lead-based coating,
4...Precious metal coating, 5...Hook part.
Claims (1)
なる貴金属被覆を電極基体上に有する電極の一部
に、鉛、鉛合金および二酸化鉛から選ばれた鉛系
被覆を電極基体上に有する電極をボルトで固定し
たことを特徴とするクロムメツキ用電極。 An electrode having a lead-based coating selected from lead, lead alloys, and lead dioxide on the electrode base is bolted onto a part of the electrode that has a noble metal coating made of platinum group metals and/or their oxides on the electrode base. A chrome plating electrode characterized by being fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988056710U JPH0417573Y2 (en) | 1988-04-28 | 1988-04-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988056710U JPH0417573Y2 (en) | 1988-04-28 | 1988-04-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01161268U JPH01161268U (en) | 1989-11-09 |
| JPH0417573Y2 true JPH0417573Y2 (en) | 1992-04-20 |
Family
ID=31282580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988056710U Expired JPH0417573Y2 (en) | 1988-04-28 | 1988-04-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0417573Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641394A (en) * | 1979-09-12 | 1981-04-18 | Kiyoteru Takayasu | Electrolytic electrode |
-
1988
- 1988-04-28 JP JP1988056710U patent/JPH0417573Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641394A (en) * | 1979-09-12 | 1981-04-18 | Kiyoteru Takayasu | Electrolytic electrode |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01161268U (en) | 1989-11-09 |
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