JP2793229B2 - Surface treatment method - Google Patents
Surface treatment methodInfo
- Publication number
- JP2793229B2 JP2793229B2 JP4908289A JP4908289A JP2793229B2 JP 2793229 B2 JP2793229 B2 JP 2793229B2 JP 4908289 A JP4908289 A JP 4908289A JP 4908289 A JP4908289 A JP 4908289A JP 2793229 B2 JP2793229 B2 JP 2793229B2
- Authority
- JP
- Japan
- Prior art keywords
- electroless nickel
- hairline
- layer
- copper plating
- nickel plating
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 12
- 238000004381 surface treatment Methods 0.000 title claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 72
- 238000007747 plating Methods 0.000 claims description 42
- 229910052759 nickel Inorganic materials 0.000 claims description 38
- 229910052802 copper Inorganic materials 0.000 claims description 21
- 239000010949 copper Substances 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 11
- 239000010410 layer Substances 0.000 description 29
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009500 colour coating Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000004040 coloring Methods 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Chemically Coating (AREA)
Description
本発明は、ヘアライン加工を施した表面の処理方法に
関するものである。The present invention relates to a method for treating a hairline-treated surface.
従来は、素材の表面に電気銅めっきを施すと共に電気
ニッケルめっきを施した後に、機械的又は物理的手段で
ヘアライン加工をすることによって、表面の処理をおこ
なうようにしている。電気ニッケルめっきは硬度が低い
ために、このようにヘアライン加工を容易におこなうこ
とができるのである。Conventionally, after the surface of a material is subjected to electro-copper plating and electro-nickel plating, a surface treatment is performed by performing a hairline process by mechanical or physical means. Since the electro-nickel plating has a low hardness, the hairline processing can be easily performed in this manner.
しかし電気ニッケルめっきはこのように表面硬度が低
く、しかも耐食性が劣るために、電気ニッケルめっきの
表面にさらにカラー電着塗装やクリアー塗装などして保
護しなければならないという問題があった。 本発明は上記の点に鑑みて為されたものであり、表面
硬度が高く、しかも耐食性に優れた表面を形成すること
ができる表面処理方法を提供することを目的とするもの
である。However, the electro-nickel plating has such a low surface hardness and poor corrosion resistance. Therefore, there has been a problem that the surface of the electro-nickel plating must be further protected by color electrodeposition coating or clear coating. The present invention has been made in view of the above points, and it is an object of the present invention to provide a surface treatment method capable of forming a surface having high surface hardness and excellent corrosion resistance.
本発明に係る表面処理方法は、素材に銅めっき層を形
成し、この銅めっき層にヘアライン加工をした後、ヘア
ライン加工をした表面に、無電解ニッケルめっきを施す
ことを特徴とするものである。The surface treatment method according to the present invention is characterized in that a copper plating layer is formed on a material, a hairline process is performed on the copper plating layer, and then the surface subjected to the hairline process is subjected to electroless nickel plating. .
無電解ニッケルめっきで形成した無電解ニッケル層は
表面硬度が高いと共に耐食性にも優れており、従来の電
気ニッケルめっきをおこなう場合のように表面に保護層
を形成する必要がない。また無電解ニッケルめっきで形
成した無電解ニッケル層は硬いためにヘアライン加工が
困難であるが、予めヘアライン加工した上に無電解ニッ
ケルめっきするために、ヘアライン加工が困難になるよ
うなこともない。The electroless nickel layer formed by electroless nickel plating has a high surface hardness and excellent corrosion resistance, so that there is no need to form a protective layer on the surface as in the case of conventional electroless nickel plating. In addition, the electroless nickel layer formed by electroless nickel plating is hard, so that the hairline processing is difficult. However, since the electroless nickel plating is performed after the hairline processing, the hairline processing does not become difficult.
以下本発明を実施例によって詳述する。 実施例１ 素材１として、固い金属材やプラスチック成形品、ダ
イカスト品などを用いる場合には素材１の表面に直接ヘ
アライン加工することが困難であるので、まず第１図
（ａ）のように素材１の表面に電気銅めっきや無電解銅
めっきを施して銅めっき層２を形成する。銅めっき層２
は１〜100μｍ程度の厚みで形成すればよく、銅めっき
層２は硬度が低いので銅めっき層２の表面にヘアライン
加工を施すことによって第１図（ｂ）のようにヘアライ
ン３を形成することができる。このように素材１がヘア
ライン加工をすることが困難なものでも、銅めっき層２
を形成して銅めっき層２にヘアライン加工をすることに
よって、ヘアライン加工が容易におこなえるようにする
ことができ、外観部品や機能部品などの種々の分野のも
のにおいてヘアライン加工が可能になるものである。ヘ
アライン加工は機械的手段や物理的手段によっておこな
うことができるものであり、例えばロクロにペーパー砥
石やスコッチなどを取り付けて用いることによって円形
にヘアラインを施すことができ、またベルト砥石等を用
いることによって直線状にヘアラインを施すことができ
る。このように銅めっき層２の表面にヘアライン３を施
した後に、この表面に無電解ニッケルめっきを施して無
電解ニッケル層４を第１図（ｃ）のように形成させる。
無電解ニッケル層４はヘアライン３が表面に透視される
程度の厚み、例えば１〜40μｍ程度の厚みで形成するの
が好ましい。 上記のように無電解ニッケルめっきで形成される無電
解ニッケル層４は、電気ニッケルめっきで形成されるも
のより表面硬度が高く、また耐食性も優れている。ちな
みに、鉄製素材の表面に厚さ８μｍの電気銅めっきを施
すと共に厚さ20μｍの電気ニッケルめっきでニッケル層
を形成した後にヘアライン加工をする場合にはビッカー
ス硬さ（Vickers hardness）は270程度であり、耐食性
はJIS H 8610に基づく塩水噴霧試験法（塩水噴霧８時
間、休止16時間を１サイクルとして、これを３サイクル
実施）ではレイテイングナンバ６程度で、レイテングナ
ンバ９以上にするために何等かの保護膜形成が必要であ
るが、無電解ニッケルめっきでニッケル層を厚さ10μｍ
程度に形成した場合にはビッカース硬さは500程度であ
り、耐食性をレイテイングナンバ９以上とすることがで
きるのである。従って、無電解ニッケル層４の表面に保
護膜を形成したりするような必要がなくなるものであ
り、表面処理のための工程を短縮してコストの低減を図
ることができるものである。また従来のように塗装で保
護膜を形成する場合は保護膜が樹脂であるために傷が非
常に付き易いが、このような問題もなくなるものであ
る。そして、無電解ニッケルめっきで形成した無電解ニ
ッケル層４は上記のように硬いためにヘアラインを加工
することは困難であるが、予めヘアライン加工した上に
無電解ニッケル層４を形成するようにしているために、
ヘアライン加工が困難になるようなことはない。 このように無電解ニッケルめっきで形成される無電解
ニッケル層４の表面硬度はこのように高いが、熱処理を
おこなうことによってさらに表面硬度を高めることがで
きる。熱処理は例えば400℃〜650℃程度の温度、５〜30
分間程度の時間の条件でおこなうことができ、このよう
に熱処理をおこなうとビッカース硬さは1000〜1300程度
になる。このとき、熱処理条件を調整することによって
表面硬度の所定の範囲で任意に調整することができるも
のである。 尚、上記実施例における表面処理の具体的な工程の一
例を次に示す。素材を脱脂（必要に応じて酸洗）→
水洗→電気銅めっき又は無電解銅めっき→水洗→
ヘアライン加工→脱脂→水洗→無電解ニッケルめ
っき→水洗→乾燥→必要に応じて熱処理。 実施例２ 第１図（ｃ）のように無電解ニッケルめっきをして無
電解ニッケル層４を形成したのちに、色調を表現するた
めに無電解ニッケル層４の表面にカラー電着塗装やカラ
ークリアー塗装をおこなってカラー塗膜を施すようにし
たものである。カラー塗膜の厚みは３〜15μｍ程度に形
成するのが好ましく、このようにカラー塗膜形成する場
合には無電解ニッケル層４は１〜10μｍ程度の厚みで形
成すれば十分である。Hereinafter, the present invention will be described in detail with reference to examples. Example 1 When a hard metal material, a plastic molded product, a die-cast product, or the like is used as the raw material 1, it is difficult to directly perform a hairline process on the surface of the raw material 1. First, as shown in FIG. A copper plating layer 2 is formed by applying an electrolytic copper plating or an electroless copper plating to the surface of 1. Copper plating layer 2
May be formed to a thickness of about 1 to 100 μm. Since the copper plating layer 2 has a low hardness, the hairline 3 is formed on the surface of the copper plating layer 2 by performing hairline processing as shown in FIG. Can be. As described above, even if the material 1 is difficult to perform the hairline processing, the copper plating layer 2
By performing the hairline processing on the copper plating layer 2 by forming the above, the hairline processing can be easily performed, and the hairline processing can be performed in various fields such as appearance parts and functional parts. is there. Hairline processing can be performed by mechanical means or physical means, for example, by attaching a paper grindstone or scotch to the wheel to use a hairline in a circular shape, and by using a belt whetstone, etc. Hairlines can be applied in a straight line. After applying the hairline 3 to the surface of the copper plating layer 2 in this manner, electroless nickel plating is applied to the surface to form an electroless nickel layer 4 as shown in FIG. 1 (c).
The electroless nickel layer 4 is preferably formed with a thickness such that the hairline 3 can be seen through the surface, for example, a thickness of about 1 to 40 μm. As described above, the electroless nickel layer 4 formed by electroless nickel plating has a higher surface hardness than that formed by electroless nickel plating, and has excellent corrosion resistance. By the way, when the surface of an iron material is plated with 8 μm of electrolytic copper and the hairline processing is performed after forming a nickel layer by 20 μm of electrolytic nickel plating, the Vickers hardness is about 270. For corrosion resistance, the salt spray test method based on JIS H 8610 (salt water spray 8 hours, pause 16 hours as one cycle, this is carried out for 3 cycles) has a rating number of about 6 and a rating number of 9 or more. It is necessary to form such a protective film, but the nickel layer is 10 μm thick by electroless nickel plating.
When formed to such a degree, the Vickers hardness is about 500, and the corrosion resistance can be increased to a rating number of 9 or more. Accordingly, there is no need to form a protective film on the surface of the electroless nickel layer 4, and the cost for the surface treatment can be reduced by shortening the process for the surface treatment. In the case where a protective film is formed by painting as in the prior art, the protective film is made of a resin, so that the protective film is easily damaged, but such a problem is eliminated. Since the electroless nickel layer 4 formed by electroless nickel plating is hard as described above, it is difficult to process the hairline. However, the electroless nickel layer 4 is formed after the hairline is processed in advance. To be
Hairline processing does not become difficult. Although the surface hardness of the electroless nickel layer 4 formed by the electroless nickel plating is high as described above, the surface hardness can be further increased by performing the heat treatment. The heat treatment is performed, for example, at a temperature of about 400 ° C to 650 ° C,
The heat treatment can be performed for about a minute or so, and the Vickers hardness becomes about 1000 to 1300 when the heat treatment is performed in this manner. At this time, the surface hardness can be arbitrarily adjusted within a predetermined range by adjusting the heat treatment conditions. In addition, an example of the specific process of the surface treatment in the above embodiment is shown below. Degreasing material (pickling if necessary) →
Rinsing → Electric copper plating or electroless copper plating → Rinsing →
Hairline processing → degreasing → washing with water → electroless nickel plating → washing with water → drying → heat treatment if necessary. Example 2 After the electroless nickel layer 4 was formed by electroless nickel plating as shown in FIG. 1 (c), the surface of the electroless nickel layer 4 was subjected to color electrodeposition coating or coloring to express the color tone. The color coating is applied by clear coating. The thickness of the color coating is preferably about 3 to 15 .mu.m. In this case, it is sufficient to form the electroless nickel layer 4 with a thickness of about 1 to 10 .mu.m.
上述のように本発明にあっては、ヘアライン加工をし
た表面に、無電解ニッケルめっきを施すようにしたの
で、無電解ニッケルめっきで形成した無電解ニッケル層
は表面硬度が高いと共に耐食性にも優れており、電気ニ
ッケルめっきをおこなう場合のような保護層を形成する
必要がなくなるものである。また、素材に銅めっき層を
形成し、この銅めっき層にヘアライン加工をするように
したので、素材が表面に直接ヘアライン加工をすること
が困難なものでも、硬度が低い銅めっき層にヘアライン
加工を行なうことができ、素材の材質に左右されること
なくヘアライン加工をすることができるものである。As described above, in the present invention, since the surface subjected to the hairline processing is subjected to electroless nickel plating, the electroless nickel layer formed by electroless nickel plating has high surface hardness and excellent corrosion resistance. Therefore, there is no need to form a protective layer as in the case of performing electric nickel plating. In addition, since a copper plating layer is formed on the material and hairline processing is performed on this copper plating layer, even if the material is difficult to directly hairline on the surface, hairline processing is performed on the copper plating layer with low hardness. And hairline processing can be performed without being influenced by the material of the material.
第１図（ａ）（ｂ）（ｃ）は本発明の一実施例の厚みを
拡大して示した一部切欠斜視図である。 １は素材、２は銅めっき層、３はヘアライン、４は無電
解ニッケル層である。1 (a), 1 (b) and 1 (c) are partially cutaway perspective views showing an enlarged thickness of an embodiment of the present invention. 1 is a material, 2 is a copper plating layer, 3 is a hairline, and 4 is an electroless nickel layer.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) C23C 18/18 C23C 18/32──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. 6 , DB name) C23C 18/18 C23C 18/32
Claims (1)
層にヘアライン加工をした後、ヘアライン加工をした表
面に無電解ニッケルめっきを施すことを特徴とする表面
処理方法。1. A surface treatment method comprising forming a copper plating layer on a material, subjecting the copper plating layer to hairline processing, and then applying electroless nickel plating to the surface subjected to the hairline processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4908289A JP2793229B2 (en) | 1989-03-01 | 1989-03-01 | Surface treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4908289A JP2793229B2 (en) | 1989-03-01 | 1989-03-01 | Surface treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02228477A JPH02228477A (en) | 1990-09-11 |
| JP2793229B2 true JP2793229B2 (en) | 1998-09-03 |
Family
ID=12821174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4908289A Expired - Lifetime JP2793229B2 (en) | 1989-03-01 | 1989-03-01 | Surface treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2793229B2 (en) |
-
1989
- 1989-03-01 JP JP4908289A patent/JP2793229B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 「現場技術者のための実用めっき」日本めっき技術協会編（昭５３−９−２５）槙書店発行 ２６−２９頁 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02228477A (en) | 1990-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3977839A (en) | Coated metal article and method of coating | |
| US2214646A (en) | Metal coated plastic material and method of producing the same | |
| US3088846A (en) | Processes of treating nickel-phosphorus alloy coatings and the resulting modified coatings | |
| US3834879A (en) | Plated coins | |
| JP2793229B2 (en) | Surface treatment method | |
| JPS5844077B2 (en) | Method of forming decorative scratch patterns on the surface of non-metallic surfaces | |
| US1515658A (en) | Process for coating aluminum | |
| US3961993A (en) | Coated metal article and method of coating | |
| TWI906322B (en) | Plastic models treated with iron coating and their manufacturing methods | |
| US3880727A (en) | Method of pretreating bands and sheets of steel for one-layer enameling, and electrolytic bath for use in connection therewith | |
| US1963391A (en) | Electroplating method | |
| JP3114428B2 (en) | Manufacturing method of precious metal plating | |
| JPS6217197A (en) | Method for ornamenting porous or rough surface of nonconductor by plating | |
| US3562163A (en) | Composition for conditioning plastic parts for adhesion | |
| JPS58126996A (en) | Plating method | |
| JPH03229891A (en) | Surface treatment of metal | |
| JPS60208495A (en) | Pretreatment for electroplating to carbon material | |
| US1664750A (en) | Process for the production of galvanic metal coatings | |
| JPH05345987A (en) | Treatment of plastic molding for electromagnetic shielding | |
| JPS5848658A (en) | Decorative plating method for electric nonconductor | |
| JP2527342B2 (en) | Decorative body and manufacturing method thereof | |
| Johnson | A Study of Some Variables Affecting the Corrosion Resistance of Engineering Electroless Nickel Coatings.(Pamphlet) | |
| Nordhaus | Effects of pre-treatment on metal finishing | |
| JPS59166683A (en) | Ornametal part | |
| JPS59197884A (en) | Plastic wrist watch case |