JP2966584B2 - PR electrolytic cleaning method for precision processed products - Google Patents
PR electrolytic cleaning method for precision processed productsInfo
- Publication number
- JP2966584B2 JP2966584B2 JP15753991A JP15753991A JP2966584B2 JP 2966584 B2 JP2966584 B2 JP 2966584B2 JP 15753991 A JP15753991 A JP 15753991A JP 15753991 A JP15753991 A JP 15753991A JP 2966584 B2 JP2966584 B2 JP 2966584B2
- Authority
- JP
- Japan
- Prior art keywords
- work
- electrolytic
- processed products
- precision
- present
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は精密加工品の表面の汚れ
を完全に除去することができるとともに、表面の極微細
なバリ取りを同時に行うことができる精密加工品のＰＲ
電解洗浄方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PR of a precision-processed product which can completely remove stains on the surface of the precision-processed product and can simultaneously remove extremely fine burrs on the surface.
The present invention relates to an electrolytic cleaning method.
【０００２】[0002]
【従来の技術】コンピュータのハードディスクドライブ
に用いられるアルミニウム加工品のような精密加工品
は、加工後に表面の汚れを完全に除去したうえで次工程
へ送る必要がある。このために従来から上記のような精
密加工品に対しては、超音波洗浄と洗浄液による洗浄と
を行い、それでもなお除去できない汚れがあるときには
アルコール、アセトン、フロンのような揮発性溶剤によ
り汚れを浮かせ、軟らかい布や紙で汚れを拭い取る方法
が取られていた。2. Description of the Related Art A precision machined product such as an aluminum machined product used for a hard disk drive of a computer needs to be completely removed from the surface after working and then sent to the next process. For this purpose, ultrasonic cleaning and cleaning with a cleaning solution have been conventionally performed on precision-processed products as described above, and when there is still dirt that cannot be removed, dirt is removed with a volatile solvent such as alcohol, acetone, or chlorofluorocarbon. Floats were wiped off with a soft cloth or paper.
【０００３】しかし、精密加工品の表面のミクロンオー
ダーの凹凸内部にごみや油等が入り込んでいる場合や、
加工時のバリや砥粒が表面の凹凸内にめり込んでいる場
合には、超音波洗浄や洗浄液による洗浄を行っても除去
することが困難である。またワークを手に持って強く拭
うと傷が付いたり、加工精度をくずすおそれがあり、従
来の方法では表面のよごれを完全に除去することはでき
なかった。[0003] However, when dirt, oil, or the like enters micron-order irregularities on the surface of a precision processed product,
If burrs or abrasive grains during processing are embedded in the irregularities on the surface, it is difficult to remove them even by ultrasonic cleaning or cleaning with a cleaning liquid. In addition, if the workpiece is held in hand and wiped strongly, it may be scratched or the processing accuracy may be lost, and the conventional method cannot completely remove the surface dirt.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記したよう
な従来の問題点を解消して、ハードディスクドライブ用
アルミニウム加工品のような精密加工品の表面のよごれ
や極微細なバリ等を、確実に除去することができる精密
加工品のＰＲ電解洗浄方法を提供するために完成された
ものである。また本発明の他の目的は、上記のような精
密加工品の洗浄を短時間で能率良く行うことができる精
密加工品のＰＲ電解洗浄方法を提供するために完成され
たものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and reliably removes surface dirt and ultra-fine burrs on precision-processed products such as aluminum processed products for hard disk drives. The present invention has been completed in order to provide a method for PR electrolytic cleaning of precision-processed products which can be easily removed. Another object of the present invention has been completed in order to provide a PR electrolytic cleaning method for precision-processed products, which can efficiently clean such precision-processed products in a short time.
【０００５】[0005]
【課題を解決するための手段】上記の課題は、有機物を
含有する電解液が充填された同一の電解槽中に金属製の
ワークを２組浸漬し、この２組のワーク自体を両極とし
て交互に極性を切り換えながら２組のワーク間に直流電
流を通電することを特徴とする精密加工品のＰＲ電解洗
浄方法により解決することができる。Above problems SUMMARY OF THE INVENTION may, a metal workpiece and two pairs immersed in the same electrolytic cell the electrolyte is filled containing organics, alternating the two pairs of work itself as poles The problem can be solved by a PR electrolytic cleaning method for precision processed products, characterized in that a direct current is passed between two sets of works while switching the polarity.
【０００６】以下に本発明を図面を参照しつつ更に詳細
に説明する。図１において、１は電解液２が充填された
電解槽、３、３は電解槽１の上方の２本のバー４、４か
ら吊り下げられて電解液２中に浸漬された２組のワーク
である。このワーク３は鉄、銅、アルミニウム等の金属
製の精密加工品であり、同一の電解槽１の電解液２中に
浸漬されている。Hereinafter, the present invention will be described in more detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes an electrolytic bath filled with an electrolytic solution 2, and 3 and 3 denote two sets of works suspended from two bars 4 and 4 above the electrolytic bath 1 and immersed in the electrolytic solution 2. It is. The work 3 is a precision machined product made of metal such as iron, copper, and aluminum, and is immersed in the electrolytic solution 2 in the same electrolytic cell 1.
【０００７】本発明においては、２組のワーク３、３を
両極としてＰＲ電源５に接続し、例えば２秒毎に交互に
＋、−の極性を切り換えながら２組のワーク３、３間に
直流電流を通電する。一般に電解バリ取りを行う場合に
は、ワークの表面に電極を接近させて通電するのである
が、その場合にはワークの形状に対応させた電極を準備
する必要がある。これに対して本発明の方法において
は、図示のように一方の極となるワーク３と他方の極と
なるワーク３とは電解液２中の離れた位置にある。In the present invention, two sets of works 3 and 3 are connected to the PR power supply 5 as both poles, and a DC voltage is applied between the two sets of works 3 and 3 while alternately switching the polarity of + and-every two seconds, for example. Apply current. Generally, when performing electrolytic deburring, an electrode is brought close to the surface of a work and energization is performed. In this case, it is necessary to prepare an electrode corresponding to the shape of the work. On the other hand, in the method of the present invention, the work 3 to be one pole and the work 3 to be the other pole are separated from each other in the electrolytic solution 2 as shown.
【０００８】このような方式の電解洗浄を可能とするた
めに、本発明においては電解質と有機物とからなる特殊
な電解液２が使用されている。電解質は従来と同様に硝
酸アンモニウムのような硝酸塩、塩酸塩、硫酸塩、スル
ファミン酸塩等であるが、本発明においては電解質の他
にエチレングリコール、グリセリン等の有機物を混合し
た電解液２が用いられる。In order to enable such electrolytic cleaning, a special electrolytic solution 2 comprising an electrolyte and an organic substance is used in the present invention. The electrolyte is a nitrate such as ammonium nitrate, a hydrochloride, a sulfate, a sulfamate, or the like, as in the prior art. In the present invention, an electrolyte 2 in which an organic substance such as ethylene glycol or glycerin is mixed in addition to the electrolyte is used. .
【０００９】このような電解液２は粘性があるので、液
体層の安定化や抵抗増加の効果があり、ワーク３の表面
からの溶解金属の拡散速度を抑えるとともに、溶解金属
が有機物と金属錯塩を作り、ワーク３の表面の凹凸の凹
部を覆う。このために凹部の濃度分極による過電圧は大
きくなり電流がワーク表面の凸部に集中することとなっ
て、従来の硝酸ナトリウム溶液を電解液とした陽極電解
に比較して局部電解性が向上する。従って＋極として通
電されたワーク３の表面では、従来のように電極を接近
させることなく微細なバリ取りを行うことができる。な
お、本発明においては上記した電解液の特性を利用し、
電解液中にワークを浸漬した状態で10〜100A/dm2の電流
密度の直流電流を流すことにより、ワークの端部に電流
が集中することを防止して電流の平均化を図っている。Since the electrolytic solution 2 is viscous, it has the effect of stabilizing the liquid layer and increasing the resistance, suppresses the diffusion rate of the dissolved metal from the surface of the work 3, and forms the dissolved metal with an organic substance and a metal complex salt. To cover the concave and convex recesses on the surface of the work 3. For this reason, the overvoltage due to the concentration polarization of the concave portion increases, and the current concentrates on the convex portion on the surface of the work, so that the local electrolytic property is improved as compared with the conventional anodic electrolysis using a sodium nitrate solution as an electrolytic solution. Therefore, fine deburring can be performed on the surface of the work 3 that is energized as a positive pole without approaching the electrodes as in the related art. In the present invention, utilizing the characteristics of the above-described electrolyte solution,
By flowing a direct current having a current density of 10 to 100 A / dm 2 in a state where the work is immersed in the electrolytic solution, the current is prevented from being concentrated at the end of the work and the current is averaged.
【００１０】また本発明では上記のような特殊な電解液
２中において、ワーク３、３自体を両極として交互に極
性を切り換えながら２組のワーク間に直流電流を通電す
るＰＲ電解を行う。このため、本発明においては−極と
して通電されたワーク３の表面では脱脂が行われること
となり、＋極として通電されたワーク３の表面では電解
バリ取りが行われることとなるので、脱脂と電解バリ取
りとを交互に行うことができる。しかも従来のように電
極を使用する必要がないうえ、処理時間及び電力を1/2
とすることができる。According to the present invention, in the special electrolytic solution 2 as described above, PR electrolysis is performed in which a DC current is applied between two sets of works while alternately switching the polarity with the works 3 and 3 themselves as both poles. Therefore, in the present invention, degreasing is performed on the surface of the work 3 energized as the negative electrode, and electrolytic deburring is performed on the surface of the work 3 energized as the positive electrode. Deburring can be performed alternately. In addition, there is no need to use electrodes as in the past, and processing time and power are reduced by half.
It can be.
【００１１】なお新しいワーク３が電解液２中に浸漬さ
れた場合には、そのワーク３を−極として通電を開始す
ることが好ましい。これは＋極から通電をスタートする
とワーク表面の汚れにより不均一な溶解を生じ、ピット
発生の原因となるおそれがあるためで、まず−極として
通電して脱脂を行いその後に＋極として電解バリ取りを
行うと、均一で安定した洗浄が可能となる。また処理完
了時におけるワーク３への通電極性に限定のある場合に
は、ＰＲ電源５の作動とワーク３の取り出し機構とを連
動させればよい。取り出されたワーク３は水洗槽６にお
いて洗浄される。When a new work 3 is immersed in the electrolytic solution 2, it is preferable to start energization with the work 3 as a negative electrode. This is because starting the energization from the positive electrode may cause uneven dissolution due to contamination of the work surface, which may cause pits. When the cleaning is performed, uniform and stable cleaning can be performed. Further, when there is a limit to the polarity of the current supplied to the work 3 when the processing is completed, the operation of the PR power supply 5 and the take-out mechanism of the work 3 may be linked. The work 3 taken out is washed in the washing tank 6.
【００１２】上記のようにして本発明のＰＲ電解洗浄を
行えば、短時間でワークの表面の汚れは完全に除去する
ことができ、ワークの表面にめり込んでいた砥粒も除去
することができる。またこれと同時に極微細なバリ取り
も同時に行うことができる。しかも本発明によれば同時
に多数のワークの処理が可能であり、電解液を中性とす
ることができるのでワークがアルミニウムである場合に
もワークを損傷することもない。By performing the PR electrolytic cleaning according to the present invention as described above, the dirt on the surface of the work can be completely removed in a short time, and the abrasive grains embedded in the surface of the work can also be removed. . At the same time, ultra-fine deburring can be performed at the same time. Moreover, according to the present invention, a large number of workpieces can be processed at the same time, and the electrolyte can be neutralized, so that the workpiece is not damaged even when the workpiece is aluminum.
【００１３】[0013]
【発明の効果】以上に説明したように本発明のＰＲ電解
洗浄方法によれば、ワーク自体を両極として行うのでハ
ードディスクドライブ用アルミニウム加工品のような精
密加工品の表面のよごれや極微細なバリ等を確実に除去
することができるうえ、従来法とは異なり同時に多数の
精密加工品の処理を能率的に、しかも電力の無駄なく行
うことができる利点がある。As described above, according to the PR electrolytic cleaning method of the present invention, since the work itself is used as both poles, the surface of a precision machined product such as an aluminum machined product for a hard disk drive has a dirty surface and extremely fine burrs. And the like, and there is an advantage that, unlike the conventional method, a large number of precision-processed products can be simultaneously and efficiently processed without wasting power.
【図１】本発明の実施の際の一態様を示す断面図であ
る。FIG. 1 is a cross-sectional view showing an embodiment of the present invention.
１ 電解槽 ２ 電解液 ３ ワーク ４ バー ５ ＰＲ電源 1 Electrolyzer 2 Electrolyte 3 Work 4 Bar 5 PR power supply
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) C25F 3/00 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) C25F 3/00
Claims (1)
一の電解槽中に金属製のワークを２組浸漬し、この２組
のワーク自体を両極として交互に極性を切り換えながら
２組のワーク間に直流電流を通電することを特徴とする
精密加工品のＰＲ電解洗浄方法。1. A organics metallic workpiece and two pairs immersed in the same electrolytic cell the electrolyte is filled containing, two sets
A direct current between two sets of workpieces while alternately switching the polarity with the workpiece itself as both poles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15753991A JP2966584B2 (en) | 1991-05-31 | 1991-05-31 | PR electrolytic cleaning method for precision processed products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15753991A JP2966584B2 (en) | 1991-05-31 | 1991-05-31 | PR electrolytic cleaning method for precision processed products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04354899A JPH04354899A (en) | 1992-12-09 |
| JP2966584B2 true JP2966584B2 (en) | 1999-10-25 |
Family
ID=15651894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15753991A Expired - Fee Related JP2966584B2 (en) | 1991-05-31 | 1991-05-31 | PR electrolytic cleaning method for precision processed products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2966584B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10731270B2 (en) * | 2017-08-24 | 2020-08-04 | Seagate Technology Llc | Method of removing particles from an electronic component |
-
1991
- 1991-05-31 JP JP15753991A patent/JP2966584B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04354899A (en) | 1992-12-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990803 |
|
| LAPS | Cancellation because of no payment of annual fees |