JPS6254200B2 - - Google Patents
Info
- Publication number
- JPS6254200B2 JPS6254200B2 JP12342779A JP12342779A JPS6254200B2 JP S6254200 B2 JPS6254200 B2 JP S6254200B2 JP 12342779 A JP12342779 A JP 12342779A JP 12342779 A JP12342779 A JP 12342779A JP S6254200 B2 JPS6254200 B2 JP S6254200B2
- Authority
- JP
- Japan
- Prior art keywords
- anode
- plating
- square tube
- protrusion
- corner
- 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
- 238000007747 plating Methods 0.000 claims description 83
- 239000002198 insoluble material Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 description 18
- 239000000463 material Substances 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 5
- 238000009713 electroplating Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 230000000873 masking effect Effects 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910018104 Ni-P Inorganic materials 0.000 description 3
- 229910018536 Ni—P Inorganic materials 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910020674 Co—B Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910020598 Co Fe Inorganic materials 0.000 description 1
- 229910002519 Co-Fe Inorganic materials 0.000 description 1
- 229910020515 Co—W Inorganic materials 0.000 description 1
- 229910003271 Ni-Fe Inorganic materials 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- 229910001096 P alloy Inorganic materials 0.000 description 1
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000012633 leachable Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- KERTUBUCQCSNJU-UHFFFAOYSA-L nickel(2+);disulfamate Chemical compound [Ni+2].NS([O-])(=O)=O.NS([O-])(=O)=O KERTUBUCQCSNJU-UHFFFAOYSA-L 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- DITXJPASYXFQAS-UHFFFAOYSA-N nickel;sulfamic acid Chemical compound [Ni].NS(O)(=O)=O DITXJPASYXFQAS-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Electroplating Methods And Accessories (AREA)
Description
【発明の詳細な説明】
本発明は、電解めつき用陽極、より詳しくは角
管内面の電解めつき用陽極に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an anode for electrolytic plating, and more particularly to an anode for electrolytic plating on the inner surface of a square tube.
一般に角管内面に電解めつきを施す場合、特に
該角管のコーナー部でのめつきが不充分となり、
角管内面全体に亘つて均一な厚さのめつきを施す
ことが極めて困難であるという問題がある。この
問題は、平板にめつきを施した後、これを角管と
して組立てることにより解消されるが、その反面
各平板の組立て工程が煩雑となる。しかも、斯か
る方法に依れば、一般に平面への電解めつきは、
被めつき面の端部におけるめつき厚が他の部分よ
り大となるため、角管に組立てる前に、該端部を
精密に機械加工手直しする必要があつた。また、
上記の如く各辺毎にめつきを施す場合、めつき不
要部分をマスキングする必要があり、該めつき不
要部分の表面積が大であつたり、形状が複雑であ
る場合には著しく煩雑なマスキング作業を要し、
しかもマスキングに不良部分があればそこからめ
つき不要部分中の汚染物質が溶出されてめつき液
劣化の原因となると同時に該マスキング不良部分
からめつき液が侵入してめつき液不要部分を損傷
するという弊害を生じることがある。 Generally, when electroplating is applied to the inner surface of a square tube, the plating is insufficient, especially at the corners of the square tube.
There is a problem in that it is extremely difficult to apply plating with a uniform thickness over the entire inner surface of the square tube. This problem can be solved by plating the flat plates and then assembling them into square tubes, but on the other hand, the process of assembling each flat plate becomes complicated. Moreover, according to such a method, electrolytic plating on a flat surface is generally
Since the plating thickness at the end of the plated surface is larger than at other parts, it was necessary to precisely machine and modify the end before assembling it into a square tube. Also,
When plating is applied to each side as described above, it is necessary to mask off the parts that do not need plating, and if the surface area of the parts that do not need plating is large or the shape is complex, the masking work becomes extremely complicated. It takes
Furthermore, if there is a defective area in the masking, contaminants in areas where no plating is required will be eluted, causing deterioration of the plating solution, and at the same time, the plating liquid may enter through the defective masking area and damage the area where no plating solution is required. It may cause harmful effects.
本発明者は、上記各種欠点を解消すべく鋭意研
究を重ねた。その過程において、本発明者は、上
記角管の各辺を組み立てなければならないという
煩を避けるべく、予め組み立てられた角管をめつ
き液中に浸漬し、該角管内に角筒型陽極を収容し
て電解めつきを施すことを試みた。しかし、この
方法では、従来法と同様にめつき不要部分である
角管外面のマスキングを要し、しかも上記角筒型
陽極の使用によつても、得られるめつきは、角管
のコーナー部において不充分であるという欠点を
有する。引続く研究において、本発明者は、上記
角管内にめつき液を保持すると共に該角管自体を
陰極として使用することを試みた。これに依れ
ば、めつき不要部分である角管外面のマスキング
をする必要がなくなるが、得られるめつきに尚問
題点があるものであつた。即ち、既述の如き、単
なる角筒形状を有する陽極の使用に依つても、角
管内面のコーナー部において施されるめつきが不
充分であり、このため角管内面に均一厚さの連続
しためつき被覆を施すことができなかつた。本発
明者は、陽極について更に研究を重ねた結果、上
記角筒形状を有する陽極の各隅に突出部を設ける
と共に、該突出部を他の部分から電気的に絶縁し
て別電源に接続可能とすることにより、角管内面
のコーナー部にも良好にめつきし得ることを見出
し、本発明を完成するに至つた。 The present inventor has conducted extensive research in order to eliminate the various drawbacks mentioned above. In the process, in order to avoid the trouble of having to assemble each side of the square tube, the inventor immersed the square tube assembled in advance in a plating solution, and installed a square cylindrical anode inside the square tube. An attempt was made to contain it and apply electrolytic plating. However, like the conventional method, this method requires masking of the outer surface of the rectangular tube, which is a part that does not require plating, and even with the use of the above-mentioned rectangular cylindrical anode, the plating obtained is limited to the corners of the rectangular tube. It has the disadvantage of being insufficient in terms of In subsequent research, the present inventor attempted to hold the plating liquid within the square tube and use the square tube itself as a cathode. According to this method, it is no longer necessary to mask the outer surface of the square tube, which is a portion that does not require plating, but there are still problems with the resulting plating. That is, even if an anode having a simple square tube shape is used as described above, the plating applied to the corner portions of the inner surface of the square tube is insufficient, and as a result, the inner surface of the square tube has a continuous, uniform thickness. It was not possible to apply a tight coating. As a result of further research on the anode, the inventor of the present invention has provided a protrusion at each corner of the above-mentioned rectangular cylindrical anode, and has found that the protrusion can be electrically insulated from other parts and connected to a separate power source. It was discovered that by doing so, even the corner portions of the inner surface of a square tube can be well plated, and the present invention was completed.
即ち、本発明は角筒形状を有し、その各隅に上
端から下端にかけて突出した突出部が備えられて
おり、該突出部が、他の部分から電気的に絶縁さ
れており、該他の部分とは別電源に接続可能であ
ることを特徴とする角管内面めつき用陽極に係る
ものである。 That is, the present invention has a rectangular cylinder shape, and each corner thereof is provided with a protrusion that protrudes from the upper end to the lower end, and the protrusion is electrically insulated from the other parts. The present invention relates to an anode for plating the inner surface of a square tube, which is characterized in that it can be connected to a power supply separate from the other parts.
本発明陽極は、めつき液を保持した角管内に、
陽極突出部が該角管内面のコーナー部に近接した
状態で収容されて使用される。これにより、陽極
と角管内面のコーナー部との距離を小さくするこ
とができると共に上記突出部は別電源に接続可能
であり、従つて該コーナー部における電流密度を
高いものとすることができるため、コーナー部に
おけるめつき厚を充分なものとでき、その結果、
角管内面全体に亘り均一な厚さの連続しためつき
を施すことができる。 The anode of the present invention has a square tube containing a plating solution.
The anode protrusion is housed in a state close to the corner of the inner surface of the rectangular tube for use. As a result, the distance between the anode and the corner of the inner surface of the square tube can be reduced, and the protrusion can be connected to a separate power source, so that the current density at the corner can be increased. , the plating thickness at the corners can be made sufficient, and as a result,
It is possible to apply continuous tightening with a uniform thickness over the entire inner surface of the square tube.
本発明の陽極における突出部としては、基本的
には、例えば、添附図面第１図に示す如く、突出
部以外の側面部分（以下単に「側面」という）を
各隅において外側に折曲げ、対角線方向に星型に
突出させた形式のものであつて、且つ第６図に示
す如く、上記星型に突出させた突出部に、平板状
陽極部材を、該突出部の突き合せ部分の間から更
に突出するように備えた形式の陽極を挙げること
ができる。これにより、突出部先端と角管内面の
コーナー部との距離を最も近接させることがで
き、従つて該コーナー部における電流密度を大と
なし、該コーナー部の曲率半径が小さい場合でも
該コーナー部に充分なるめつきを施すことができ
る。上記平板状陽極部材は、対角線方向に進退可
能に固定することもでき、これにより角管コーナ
ー部と突出部先端との距離を、めつき液の種類、
組成、めつき条件、角管の大きさ等に応じて自由
に変更することができる。 Basically, as shown in FIG. 1 of the attached drawings, the protrusions in the anode of the present invention are formed by bending the side portions other than the protrusions (hereinafter simply referred to as "side surfaces") outward at each corner, and As shown in FIG. 6, a flat anode member is inserted into the star-shaped protrusion from between the abutting portions of the protrusion. Mention may also be made of a type of anode provided in a protruding manner. As a result, the distance between the tip of the protruding part and the corner part of the inner surface of the square tube can be made the closest, and therefore the current density at the corner part can be increased, even if the radius of curvature of the corner part is small. It is possible to apply sufficient plating to the surface. The above-mentioned flat anode member can also be fixed so as to be movable back and forth in the diagonal direction, so that the distance between the corner of the square tube and the tip of the protrusion can be adjusted depending on the type of plating liquid,
It can be freely changed depending on the composition, plating conditions, size of the square tube, etc.
上記に加えて、本発明の陽極においては、突出
部と側面とを電気的に絶縁し、該突出部を別電源
に接続し、側面よりも高い電流を通じることがで
きるようにしている。このように突出部を別電源
に接続可能とするには、例えば、既述の如き各側
面の突き合せ部の間から突出した進退自在に固定
し得る平板状陽極部材を、各側面と電気的に絶縁
して設ければよい。 In addition to the above, in the anode of the present invention, the protrusion and the side surface are electrically insulated, and the protrusion is connected to a separate power source so that a higher current can be passed through the anode than the side surface. In order to make the protruding part connectable to a separate power source in this way, for example, a flat anode member that protrudes from between the abutting parts of each side surface and can be fixed in a movable manner, as described above, is electrically connected to each side surface. It may be provided insulated.
本発明陽極の材質としては、めつき液に対し不
溶性のものでも溶出性のものでもよい。不溶性材
料としては、従来公知のものが広く使用でき、例
えばクロムメツキ用の鉛合金、導電性物質である
Fe、Cu、Sn、Pb、Ni、Ti等の単一金属若しくは
これら２種以上からなる合金で形成されると共に
耐薬品性及び導電性に優れたPt、Rh等で被覆さ
れたもの等が例示できる。特に、Tiから形成さ
れその表面をPtで被覆したものが好ましい。又、
溶出性材料としては、電解によつて溶解される金
属そのもの又は鉄等の材料の上に該金属を被覆し
たものであり、斯かる金属としてはCu、Ni、
Cd、Zn、Sn、Pb、Au、Ag又はこれら２種以上
の合金等が例示できる。しかし、溶出性材料を使
用する場合は、陽極から溶解残渣や細粒化した極
材料の落下により浴が染染されるため、所謂アノ
ードバツグと称される布製袋で覆つて使用しなけ
ればならない。しかも、この場合、上記アノード
バツグのため、突出部と角管内面のコーナー部と
を一定距離以上に近接させることができないの
で、角管内面のコーナー部の曲率の程度に依つて
は充分な厚さのめつきを行なうことが困難となる
ことがある。従つて、陽極全体を不溶性材料から
構成するのが好ましい。しかし、本発明の好まし
い実施態様に従えば、各突出部のみが不溶性材料
からなる陽極が提供される。この場合、既述の如
き各側面の突き合せ部分の間から突出した進退自
在に固定され得る平板状陽極部材を不溶性材料か
ら構成されるのがよい。この好ましい実施態様に
従えば、不溶性陽極材料の調製が困難であつた
り、高価である場合等に特に有利である。しかも
突出部が不溶性材料から成つているため、少くと
も突出部先端だけはアノードバツグの使用が不要
であり、従つて所望の距離まで突出部先端を角管
内面のコーナー部に近接せしめることができる。 The material for the anode of the present invention may be either insoluble or eluting with respect to the plating solution. As insoluble materials, conventionally known materials can be widely used, such as lead alloys for chrome plating and conductive substances.
Examples include those made of a single metal such as Fe, Cu, Sn, Pb, Ni, Ti, or an alloy of two or more of these metals, and coated with Pt, Rh, etc., which have excellent chemical resistance and conductivity. can. Particularly preferred is one made of Ti and whose surface is coated with Pt. or,
Elutable materials include metals themselves that are melted by electrolysis, or metals coated on materials such as iron. Examples of such metals include Cu, Ni,
Examples include Cd, Zn, Sn, Pb, Au, Ag, and alloys of two or more of these. However, when using leachable materials, the bath is dyed by the falling of dissolved residue and finely granulated electrode material from the anode, so it must be covered with a cloth bag called an anode bag. . Moreover, in this case, because of the anode bag, it is not possible to bring the protrusion and the corner of the inner surface of the square tube close to each other by more than a certain distance, so depending on the degree of curvature of the corner of the inner surface of the square tube, the thickness may not be sufficient. Sanometsuki may be difficult to perform. Therefore, it is preferred that the entire anode be constructed from an insoluble material. However, in accordance with a preferred embodiment of the present invention, an anode is provided in which only each protrusion is comprised of an insoluble material. In this case, it is preferable that the flat anode member, which protrudes from between the abutting portions of each side surface as described above and can be fixed in a movable manner, be made of an insoluble material. This preferred embodiment is particularly advantageous in cases where the preparation of insoluble anode materials is difficult or expensive. Furthermore, since the protrusion is made of an insoluble material, it is not necessary to use an anode bag at least at the tip of the protrusion, and therefore the tip of the protrusion can be brought close to the corner of the inner surface of the square tube to a desired distance. .
本発明の陽極は、めつき液を保持した角管内に
収容して使用するものであるから、角管の大き
さ、めつき条件等に応じて陽極の側面と角管内側
面との距離及び陽極突出部先端と角管内面のコー
ナー部との距離を適当に定めて作製される。しか
し、本発明の好ましい実施態様においては、陽極
の側面を一部重ね合せ構造となし、各側面の該重
ね合せ構造部分の重ね合せの度合により、全体と
して陽極を拡縮自在とする。これにより、めつき
さるべき角管の大きさに応じて、陽極の大きさを
も自在に調整することができる。また、この実施
態様と既述の各側面の突き合せ部の間から突出し
た進退自在に固定し得る平板状陽極部材とを併用
することにより、更に自由に陽極の側面と角管内
側面との距離を調節することができ、めつきさる
べき角管の大きさに応じて多数の陽極を作製する
煩を解消することができる。 Since the anode of the present invention is used by being housed in a rectangular tube holding a plating solution, the distance between the side surface of the anode and the inner surface of the rectangular tube and the distance between the anode side surface and the inner surface of the rectangular tube are determined depending on the size of the rectangular tube, plating conditions, etc. It is manufactured by appropriately determining the distance between the tip of the protrusion and the corner of the inner surface of the square tube. However, in a preferred embodiment of the present invention, the side surfaces of the anode have a partially overlapping structure, and the anode as a whole can be expanded and contracted depending on the degree of overlapping of the overlapping structure portions of each side surface. Thereby, the size of the anode can be freely adjusted depending on the size of the square tube to be plated. In addition, by using this embodiment together with the flat anode member that protrudes from between the abutting portions of each side surface and can be fixed in a movable manner, the distance between the side surface of the anode and the inner surface of the rectangular tube can be more freely adjusted. can be adjusted, and the trouble of producing a large number of anodes depending on the size of the square tube to be plated can be eliminated.
本発明の陽極の使用に際しては、めつき液の連
続過、均温化のために従来から行なわれている
めつき液の循環を行なうことができる。この循環
により、本発明の突出部を有する角筒型陽極内外
でのめつき液の内部循環が行われる。この場合、
陽極側面や突出部に多数の通孔を形成するか又は
金網で陽極を構成することにより、更に良好なめ
つき液の内部循環を行なうことができる。 When using the anode of the present invention, the plating solution can be continuously passed through and circulated as conventionally practiced for temperature equalization. Through this circulation, the plating solution is internally circulated inside and outside of the prismatic cylindrical anode having the protrusion of the present invention. in this case,
By forming a large number of holes in the side surface of the anode or the protrusion, or by constructing the anode with a wire mesh, even better internal circulation of the plating solution can be achieved.
また、めつき液を保持すべき角管の寸法が小さ
く、従つてその収量が小さい場合には、めつき時
間の経過と共にめつき液の組成が変動することが
ある。斯かる場合には、めつき液を外部貯槽から
循環させることにより上記組成変動を防止するこ
とができる。この循環は、上記めつき液の連続
過装置を通して、且つ角管内での液面高さを一定
に保持しつつ適切な流速で行なうのが好ましい。
また、外部貯槽においてめつき液の調整を行なう
ことができるが、角管容量に比し、該外部貯槽を
大型のものとすれば該調整はほとんど不要とな
る。外部貯槽は、新設のものでもよいし、又、既
設のめつき槽を使用してもよい。勿論、めつき液
を保持すべき角管容量が大きい場合にも、上記の
如き外部からのめつき液循環を行なうことができ
る。 Further, if the size of the rectangular tube to hold the plating solution is small and the yield thereof is therefore small, the composition of the plating solution may change as the plating time passes. In such a case, the above-mentioned compositional fluctuation can be prevented by circulating the plating solution from an external storage tank. This circulation is preferably carried out through the continuous filtration device for the plating solution and at an appropriate flow rate while keeping the liquid level in the square tube constant.
Further, the plating solution can be adjusted in the external storage tank, but if the external storage tank is made large compared to the capacity of the square tube, this adjustment becomes almost unnecessary. The external storage tank may be a new one, or an existing plating tank may be used. Of course, even when the capacity of the rectangular tube to hold the plating liquid is large, the plating liquid can be circulated from the outside as described above.
本発明に依れば、各種材質の角管に、従来公知
のめつき液を用いて各種のめつきを角管内面全体
に均一厚さで施すことができる。従つて、Fe、
Cu及びそれらの合金等からなる角管に、Ni、Ni
−ｐ、Ni−Ｂ、Co、Co−Ｐ、Co−Ｂ、Fe、
Cu、Mo、Ni−Fe、Ni−Co−Fe、Ni−Co−Ｐ、
Ni−Co−Ｂ、Ni−Ｗ、Co−Ｗ等のめつきを施す
ことができる。めつき条件としては、常法に従
い、めつき液の種類、組成等に応じた最適条件を
採用して行なうのが最も好ましい。 According to the present invention, various types of plating can be applied to square tubes made of various materials using conventionally known plating solutions to a uniform thickness over the entire inner surface of the square tube. Therefore, Fe,
Square tubes made of Cu and their alloys, etc.
-p, Ni-B, Co, Co-P, Co-B, Fe,
Cu, Mo, Ni-Fe, Ni-Co-Fe, Ni-Co-P,
Plating with Ni-Co-B, Ni-W, Co-W, etc. can be applied. As the plating conditions, it is most preferable to use the optimum conditions according to the type, composition, etc. of the plating solution according to a conventional method.
以下添附図面により本発明を詳述する。第１図
は、本発明の星型に突出部を設けた角筒状陽極の
概略を示す平面図であり、第２図は第１図の陽極
の側面図である。この陽極は、突出部１及び側面
２共に同一材質からなるものであり、好ましくは
不溶性材料からなつている。使用に際しては、こ
の陽極の突出部１の先端が、めつきさるべき角管
のコーナー部に近接した状態で該角管内に収容さ
れ、固定される。陽極の側面２には、多数の通孔
３が設けられ、陽極内外でのめつき液の内部循環
が促進される。該通孔３は、突出部１の側面にも
設けることができる。めつき液を保持すべき角管
容量が小さい場合には、第３図に示すように、外
部からめつき液を循環する。第３図は、本発明陽
極の使用状態を示す縦断面図である。角管４の上
端及び下端に、パツキング５及び６を介して夫々
上部治具７及び底治具８を固定し、一種のめつき
槽を構成する。本発明陽極１１は、このめつき槽
内に支持部材２３により収容設置される。該上部
治具７及び底治具８には、めつき液循環用配管９
及び１０が夫々設けられ、これらは連続過装置
（図示せず）を介して外部めつき液貯槽（図示せ
ず）と連結されている。このようにして、めつき
液を外部から循環させることにより、陽極１１内
外のめつき液内部循環が促進されると共に経時的
なめつき液の組成変動が防止される。 The present invention will be explained in detail below with reference to the accompanying drawings. FIG. 1 is a plan view schematically showing a rectangular cylindrical anode provided with a star-shaped protrusion according to the present invention, and FIG. 2 is a side view of the anode shown in FIG. 1. In this anode, both the protrusion 1 and the side surface 2 are made of the same material, preferably an insoluble material. In use, the tip of the protruding portion 1 of this anode is accommodated and fixed within the square tube in close proximity to the corner of the square tube to be plated. A large number of through holes 3 are provided on the side surface 2 of the anode to promote internal circulation of the plating solution inside and outside the anode. The through hole 3 can also be provided on the side surface of the protrusion 1. When the capacity of the square tube to hold the plating liquid is small, the plating liquid is circulated from the outside as shown in FIG. FIG. 3 is a longitudinal sectional view showing the state in which the anode of the present invention is used. An upper jig 7 and a bottom jig 8 are fixed to the upper and lower ends of the square tube 4 via packings 5 and 6, respectively, to form a type of plating tank. The anode 11 of the present invention is accommodated and installed in this plating tank by a support member 23. The upper jig 7 and the bottom jig 8 are provided with plating liquid circulation piping 9.
and 10 are provided, respectively, which are connected to an external plating liquid reservoir (not shown) via a continuous filtration device (not shown). By circulating the plating liquid from the outside in this manner, internal circulation of the plating liquid inside and outside the anode 11 is promoted, and compositional fluctuations of the plating liquid over time are prevented.
また、第４図は、本発明陽極の側面の一実施態
様を示す一部平面図であり、第５図はその正面図
である。第４図において、側面は一部重ね合せ構
造となつており、その重ね合せ部分１２には、
夫々第５図に示す如き、複数の長孔１３が設けら
れ、該長孔１３を貫く連結部材（図示せず）によ
り連結されている。上記重ね合せ部分の重ね合せ
の度合を調節することにより、陽極全体を拡縮自
在とすることができるので、めつきさるべき角管
の大きさに応じ、一定範囲内で、陽極突出部と角
管内面コーナー部との距離を調節することができ
る。 Moreover, FIG. 4 is a partial plan view showing one embodiment of the side surface of the anode of the present invention, and FIG. 5 is a front view thereof. In FIG. 4, the side surface has a partially overlapping structure, and the overlapping portion 12 includes:
As shown in FIG. 5, a plurality of elongated holes 13 are provided, and the elongated holes 13 are connected by a connecting member (not shown) passing through them. By adjusting the degree of overlapping of the above-mentioned overlapping parts, the entire anode can be expanded and contracted. The distance to the surface corner can be adjusted.
第６図は、本発明陽極の突出部の電気的絶縁の
実施態様を示す部分平面図である。陽極側面１７
は、その端部で外側に折り曲げられて既述の星型
陽極の如く突出部１８を構成する。しかも該突出
部１８の突き合せ部の間に、平板状陽極部材１９
が挿入され、支持部材２０により固定されてい
る。該平板状陽極部材１９は、不溶性材料からな
り、陽極本体から絶縁部材２１ににより電気的に
絶縁されて、陽極本体とは別電源に接続されてい
るので、陽極本体よりも高い電流を通ずることが
できる。従つて、角管内面のコーナー部の曲率が
極めて小さい場合にも均一なめつきをすることが
できる。しかも、上記平板状陽極部材１９は、第
７図に示す如く、上記支持部材２０と係合する部
分に長孔２２が設けられ、該支持部材２０との係
合位置を調節することにより前記突出部１８から
対角線方向に進退自在に固定することができる。
これにより、その先端と角管内面コーナー部との
距離を約10mm前後にまで縮めることができる。従
つて、前記した別電源による管理と、陽極突出部
先端−角管内面コーナー部間の距離調整とを組合
せることにより、角管の大きさ、めつき液の種
類、組成その他の条件に大幅な変更があつた場合
にも、充分対応することができる。 FIG. 6 is a partial plan view showing an embodiment of electrical insulation of the protrusion of the anode of the present invention. Anode side 17
is bent outward at its end to form a protrusion 18 like the star-shaped anode described above. Moreover, between the abutting portions of the protruding portions 18, a flat anode member 19 is provided.
is inserted and fixed by the support member 20. The flat anode member 19 is made of an insoluble material, is electrically insulated from the anode body by an insulating member 21, and is connected to a separate power source from the anode body, so that it cannot conduct a higher current than the anode body. Can be done. Therefore, uniform plating can be achieved even when the curvature of the corner portion of the inner surface of the square tube is extremely small. Moreover, as shown in FIG. 7, the flat anode member 19 is provided with a long hole 22 in a portion that engages with the support member 20, and the protrusion can be adjusted by adjusting the engagement position with the support member 20. It can be fixed so as to be movable forward and backward from the portion 18 in a diagonal direction.
As a result, the distance between the tip and the inner corner of the square tube can be reduced to about 10 mm. Therefore, by combining the above-mentioned management using a separate power source and adjusting the distance between the tip of the anode protrusion and the inner corner of the square tube, the size of the square tube, the type of plating solution, the composition, and other conditions can be greatly adjusted. Even if there are major changes, we can respond adequately.
以上図面においては、断面４角形の角管につい
て説明したが、断面が４角形以外のもの、例えば
３角、５角、６角のものにも本発明陽極を適宜変
更して応用することができる。 In the above drawings, a square tube with a square cross section has been described, but the anode of the present invention can be applied to tubes with a cross section other than square, such as triangular, pentagonal, or hexagonal tubes, with appropriate changes. .
実施例 １
断面250mm×250mm、長さ700mmの銅製角管（内
面コーナー部の曲率12mmＲ）の上端及び下端にパ
ツキングを夫々介して上部治具及び底治具を固定
し、一種のめつき槽を構成する。該上部治具及び
底治具には、外部めつき液貯槽（容量1700）に
連結されためつき液循環用配管が備えられてい
る。Example 1 An upper jig and a bottom jig were fixed to the upper and lower ends of a square copper tube with a cross section of 250 mm x 250 mm and a length of 700 mm (curvature of the inner corner part 12 mm R) through packing, respectively, to form a type of plating bath. Configure. The upper jig and the bottom jig are equipped with plating liquid circulation piping connected to an external plating liquid storage tank (capacity 1700).
上記めつき槽内に、第６図に示す如き態様の突
出部を有する本発明の陽極を、該突出部が、上記
めつき槽のコーナー部に最も近接するように挿入
し、固定する。この陽極の本体は、厚さ１mmの
Ti板にPtを被覆した材料からなるものであつ
て、断面190mm×190mm、高さ700mmの略々角筒形
状を有し、その４隅は第６図に示す如く対角線方
向に22mm突出している。その突合せ部先端から
は、厚さ１mmのTi板にPtを被覆した材料からな
る100mm×700mmの平板状陽極部材が更に対角線方
向に10mm突出し、その先端部は上記角管内面のコ
ーナー部に約10mmの距離をもつて近接している。
しかも、この平板状陽極部材は、他の部分から電
気的に絶縁された別電源により管理し得るように
なつている。 The anode of the present invention having a protrusion as shown in FIG. 6 is inserted into the plating tank so that the protrusion is closest to the corner of the plating tank and fixed. The body of this anode is 1mm thick.
It is made of a Ti plate coated with Pt, and has a roughly rectangular cylinder shape with a cross section of 190 mm x 190 mm and a height of 700 mm, and its four corners protrude 22 mm diagonally as shown in Figure 6. . From the tip of the butt, a 100 mm x 700 mm flat anode member made of a 1 mm thick Ti plate coated with Pt protrudes further 10 mm diagonally, and its tip is approximately at the corner of the inner surface of the square tube. They are close to each other with a distance of 10 mm.
Moreover, this flat anode member can be managed by a separate power source that is electrically insulated from other parts.
使用するめつき液は、スルフアミン酸ニツケル
450ｇ／、ホウ酸30ｇ／を含むスルフアミン
酸ニツケルめつき液である。このめつき液を、別
に設けためつき液貯槽（容量1700）から前記循
環用配管及び過器を通して流速25／分で循環
させつつ、温度55℃、PH5.0で、８時間を要して
ニツケルめつきを200μｍ施す。尚、電流密度
は、上記陽極側面につき3A／ｄm2、平板状陽極
部材につき3.5A／ｄm2である。 The plating liquid used is nickel sulfamate.
This is a nickel sulfamic acid plating solution containing 450g/ and 30g/ of boric acid. This plating solution was circulated at a flow rate of 25/min from a separately provided plating solution storage tank (capacity 1700) through the circulation piping and filter, and was heated to 55°C and PH5.0 for 8 hours. Apply plating to 200μm. The current density was 3 A/dm 2 for the side surface of the anode and 3.5 A/dm 2 for the flat anode member.
斯くして上記角管内面に均一厚みのニツケルめ
つきを施すことができ、角管内面コーナー部にお
いてもめつき厚は均一であり、他の部分と±20μ
ｍの以内の差があるだけであつた。 In this way, it is possible to apply nickel plating with a uniform thickness to the inner surface of the square tube, and the plating thickness is uniform even at the corners of the inner surface of the square tube, and is within ±20μ of the other parts.
There was only a difference of less than m.
実施例 ２
断面590mm×257mm、長さ1219mmの銅製角管（内
面コーナー部の曲率３mmＲ）を用い実施例１と同
様にしてめつき槽を構成する
このめつさ槽内に、断面530mm×200mm、長さ
1220mmを有する以外は実施例１と同様な本発明陽
極を収容して実施例１と同様にしてNiめつき200
μｍを施す。次いで水洗後直ちにNi−ｐ合金め
つきを施す。使用するNi−Ｐ合金めつき液は、
下記基本組成のものである。Example 2 A plating tank was constructed in the same manner as in Example 1 using a square copper tube with a cross section of 590 mm x 257 mm and a length of 1219 mm (curvature of the inner corner part: 3 mm R).In this plating tank, a plating tank with a cross section of 530 mm x 200 mm was used. ,length
The anode of the present invention, which was the same as in Example 1 except that it had a diameter of 1220 mm, was housed and Ni-plated with 200 mm in the same manner as in Example 1.
Apply μm. Immediately after washing with water, Ni-P alloy plating is applied. The Ni-P alloy plating liquid used is
It has the following basic composition.
成 分 濃度（ｇ／）
硫酸ニツケル 175
塩化ニツケル 25
リン酸 20
亜リン酸 10
このめつき液を、別に設けためつき液から循環
させつつ、温度55℃、PH1.6で８時間を要しNi−
Ｐ合金めつきを60μｍ施す。尚、電流密度は、上
記陽極側面につき1.5A／ｄm2、平板状陽極部材
につき2A／ｄm2である。 Ingredient concentration (g/) Nickel sulfate 175 Nickel chloride 25 Phosphoric acid 20 Phosphorous acid 10 This plating solution was circulated from a separate plating solution at a temperature of 55℃ and pH 1.6 for 8 hours. −
Apply P alloy plating to 60μm. The current density was 1.5 A/dm 2 for the side surface of the anode and 2 A/dm 2 for the flat anode member.
斯くして上記角管内面に均一厚みのNiめつき
層及びNi−Ｐ合金めつき層からなる２層めつき
を施すことができ、コーナー部においても±25μ
ｍ以内の差が生じただけであつた。 In this way, a two-layer plating consisting of a Ni plating layer and a Ni-P alloy plating layer of uniform thickness can be applied to the inner surface of the square tube, and even at the corners, the plating thickness is ±25μ.
There was only a difference within m.
第１図は、本発明陽極の平面図であり、第２図
はその正面図である。第３図は、本発明陽極を、
めつきさるべき角管内に配置した使用状態を示す
縦断面図である。第４図は、本発明陽極の側面の
重ね合せ構造を示す一部拡大平面図を示し、第５
図は、その一部拡大正面図を示す。第６図は、本
発明陽極突出部の実施態様を示す一部拡大平面図
である。第７図は、第６図の実施態様の突出部に
使用する平板状陽極部材の正面図である。
１……突出部、２……側面、３……通孔、４…
…角管、５，６……パツキング、７……上部治
具、８……底治具、９，１０……めつき液循環用
配管、１１……陽極、１２……重ね合せ部分、１
３……長孔、１７……側面、１８……突出部、１
９……平板状陽極部材、２０……支持部材、２１
……絶縁部材、２２……長孔、２３……支持部
材。
FIG. 1 is a plan view of the anode of the present invention, and FIG. 2 is a front view thereof. Figure 3 shows the anode of the present invention,
FIG. 3 is a longitudinal cross-sectional view showing a state in which it is placed in a square tube to be plated. FIG. 4 shows a partially enlarged plan view showing the overlapping structure of the side surfaces of the anode of the present invention, and FIG.
The figure shows a partially enlarged front view thereof. FIG. 6 is a partially enlarged plan view showing an embodiment of the anode protrusion of the present invention. FIG. 7 is a front view of a flat anode member used in the protruding portion of the embodiment of FIG. 6. 1...Protrusion, 2...Side surface, 3...Through hole, 4...
... Square tube, 5, 6 ... Packing, 7 ... Upper jig, 8 ... Bottom jig, 9, 10 ... Plating liquid circulation piping, 11 ... Anode, 12 ... Overlapping part, 1
3...Long hole, 17...Side surface, 18...Protrusion, 1
9... Flat anode member, 20... Supporting member, 21
...Insulating member, 22...Elongated hole, 23...Supporting member.
Claims (1)
かけて突出した突出部が備えられており、該突出
部が、他の部分から電気的に絶縁されており、該
他の部分とは別電源に接続可能であることを特徴
とする角管内面めつき用陽極。 ２ 突出部が、進退自在に固定されている特許請
求の範囲第１項記載の陽極。 ３ 不溶性材料からなる特許請求の範囲第１項又
は第２項記載の陽極。 ４ 突出部のみが、不溶性材料からなる特許請求
の範囲第１項乃至第３項のいずれかに記載の陽
極。 ５ 各側面が、一部重ね合せ構造とされ、該重ね
合せ構造の重なりの度合により、陽極が全体とし
て拡縮自在である特許請求の範囲第１項乃至第４
項のいずれかに記載の陽極。 ６ 各側面に、多数の通孔が設けられている特許
請求の範囲第１項乃至第５項のいずれかに記載の
陽極。 ７ 各側面が、網目構造を有する特許請求の範囲
第１項乃至第５項のいずれかに記載の陽極。[Scope of Claims] 1. It has a rectangular tube shape, and is provided with a protrusion that protrudes from the upper end to the lower end at each corner, and the protrusion is electrically insulated from other parts, and An anode for plating the inner surface of square tubes, which is characterized by its ability to be connected to a separate power source from other parts. 2. The anode according to claim 1, wherein the protruding portion is fixed so as to be movable back and forth. 3. The anode according to claim 1 or 2, which is made of an insoluble material. 4. The anode according to any one of claims 1 to 3, in which only the protruding portion is made of an insoluble material. 5 Each side surface has a partially overlapping structure, and the anode as a whole can be expanded and contracted depending on the degree of overlapping of the overlapping structure.
Anode according to any of paragraphs. 6. The anode according to any one of claims 1 to 5, wherein each side surface is provided with a large number of through holes. 7. The anode according to any one of claims 1 to 5, wherein each side surface has a network structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12342779A JPS5647598A (en) | 1979-09-25 | 1979-09-25 | Anode for plating inner surface of rectangular pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12342779A JPS5647598A (en) | 1979-09-25 | 1979-09-25 | Anode for plating inner surface of rectangular pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5647598A JPS5647598A (en) | 1981-04-30 |
| JPS6254200B2 true JPS6254200B2 (en) | 1987-11-13 |
Family
ID=14860286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12342779A Granted JPS5647598A (en) | 1979-09-25 | 1979-09-25 | Anode for plating inner surface of rectangular pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5647598A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2806098B1 (en) * | 2000-03-09 | 2002-08-16 | Usinor | DEVICE FOR ELECTRODEPOSITION OF AN ANNULAR METAL PART OF COMPLEX FORM |
| KR101219681B1 (en) * | 2010-04-29 | 2013-01-08 | 한국생산기술연구원 | Anode assembly for electro plating |
| KR101219680B1 (en) * | 2010-04-29 | 2013-01-08 | 한국생산기술연구원 | Electro plating apparatus for plating inner part |
| JP5657417B2 (en) * | 2011-02-16 | 2015-01-21 | 三菱電線工業株式会社 | Electrodeposition method and electrodeposition apparatus |
-
1979
- 1979-09-25 JP JP12342779A patent/JPS5647598A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5647598A (en) | 1981-04-30 |
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