JPS5927396B2 - Exterior parts for watches - Google Patents
Exterior parts for watchesInfo
- Publication number
- JPS5927396B2 JPS5927396B2 JP5065880A JP5065880A JPS5927396B2 JP S5927396 B2 JPS5927396 B2 JP S5927396B2 JP 5065880 A JP5065880 A JP 5065880A JP 5065880 A JP5065880 A JP 5065880A JP S5927396 B2 JPS5927396 B2 JP S5927396B2
- Authority
- JP
- Japan
- Prior art keywords
- plating
- gold
- alloy plating
- color
- alloy
- 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
Landscapes
- Electroplating Methods And Accessories (AREA)
Description
【発明の詳細な説明】
本発明は、Ａｕ−Ａｇ−Ｃｕ合金メッキを施した時計用
外装部品の金メッキ構成に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gold-plated structure of an exterior part for a watch that is plated with an Au-Ag-Cu alloy.
従来、時計用外装部品の金メッキ構成としては、洋白材
または黄銅材を使用した素材の表面にまずＡｕ−Ａｇ系
合金メッキを下地メッキとして施し、その上に仕上げメ
ッキとしてＡｕ−Ｎｉ系合金メッキを行なつていた。Traditionally, gold plating for watch exterior parts involves first applying Au-Ag alloy plating to the surface of a material using nickel silver or brass as a base plating, and then applying Au-Ni alloy plating as a final plating. was being carried out.
この金メッキ構成において、下地メッキとして施すＡｕ
−Ａｇ系合金メッキは、金相に１４〜に１８位でコスト
的には、安価であり、メッキ層の応力が少ないため、数
十μ以上の原付が可能であるが、色調の点で、金色が薄
く、イエローゴールド色を呈し、時計用外装部品の金メ
ッキの表面色調としては、高級感に欠ける色調である。
また、Ａｕ−Ａｇ系合金メッキは、銀を含有しているた
めに、耐食性も芳しくなく汗により変色したり、大気中
放置したままで、携帯期間１〜２力月で変色し、美観を
害してしまう。更に硬度がＨＶ１７０〜１９０位と低い
ため、耐摩耗性も劣つている。以上の理由から、Ａｕ−
Ａｇ系合金メッキを仕上げメッキとすることはできずそ
の上に更に、仕上げメッキとして施すＡｕ−Ｎｉ系合金
メッキは、色調の点でおちついた高級感のある金色を呈
し、我々の要求する色調にマッチしている。しかし、こ
のＡｕ−Ｎｉ系合金メッキは、メッキ層の応力が高いた
めに、最高３μ位が限度であり、これ以上の原付を施こ
すとメッキ層にクラックが生じ、このため、このクラッ
クの部分が耐食性を低下させる。また、Ａｕ−Ｎｉ系合
金メッキは、硬度がＨＶ２２０〜２３０位と低く、メッ
キ厚みも３μという薄いメッキであるため、特に時計用
外装部品の各コーナー部分が携帯期間２〜３力月位で摩
耗する事があり、下地メッキのＡｕ−Ａｇ系合金メッキ
が露出し、下地メッキのＡｕ−Ｎｉ系合金メッキとの間
に、極端な色調差が生じ、外観上望ましくない。また、
このような下地メッキのＡｕ−Ａｇ系合金メッキの露出
したことにより、成分中のＡｇが点状の腐食を発生し、
耐食性を低下させる。更に、コスト的にも、このＡｕ−
Ｎｉ系合金メッキは、金相に２２〜に２３と純金に近い
ために、コスト高となつている。本発明の目的は、この
ような欠点をカバーするために、素地のすぐ上にＡｕ−
Ａｇ−Ｃｕ系合金メッキを施した後、仕上げメッキとし
て、例えばＡｕメッキ、又はＡｕ−Ｎｉ系合金メッキ、
又はＡｕ−Ｃｕ系合金メッキを行なつたことにより、耐
食性及び耐摩耗性があり、高級感のある金メッキを施し
た時計用外装部品を提供することにある。以下本発明の
詳細な説明について以下に述べる。本発明の金メッキ構
成は、洋白材または黄銅材を使用した素材の表面に、下
地メッキとしてＡｕ−Ａｇ−Ｃｕ系合金メッキを施し、
その上にＡｕ一Ｎｉ系合金メッキを施したものである。
この金メッキ構成の中で、使用するＡｕ−Ａｇ−Ｃｕ合
金メツキは、重量比で、ＡｇｌＯ〜２５％，Ｃｕｌ〜１
０％，残部金及び不可避不純物からなるものである。こ
のＡｕ−Ａｇ−Ｃｕ合金メツキの特徴としては、色調が
仕上げメツキの例えば、Ａｕ又はＡｕ−Ｎｉ系合金又は
、Ａｕ−Ｃｕ系合金に近い、多少赤味がかつたコールド
色を呈し、たとえ、携帯途中で仕上げメツキのＡｕ−Ｎ
ｉ系合金メツキが摩耗しても、従来のＡｕ−Ａｇ系合金
メツキほどの色調差がなく、外観をそこなうことが少な
ｌい。また、厚みについては、携帯試験の結果によれ
ば、メツキ厚み３μ以上あれば十分であり、１０μを越
えるとクラツクが入つて実用的でなく、１μ未満であれ
ば耐食性，耐摩耗性の点で問題となつてしまう。更に耐
食性の点でも、従来のＡｕ一Ａｇ系合金メツキに比べて
、大気中に放置しただけで変色するということがなく、
すぐれていることがわかつた。本発明のＡｕ−Ａｇ−Ｃ
ｕ合金メツキは、Ａｇの含有量が２５％以上を越えると
、黄味の強い金色となり、更に耐食性を低下させる。２
また、Ａｇ含有量が１０％以下になると、赤味の強い金
色となり、希望の色調が得られない。In this gold plating configuration, Au applied as the base plating
-Ag-based alloy plating is 14th to 18th to gold phase, and is inexpensive, and since the stress of the plating layer is low, it is possible to use mopeds with a thickness of several tens of microns or more, but in terms of color tone, The gold color is pale and has a yellow gold color, which is a color that lacks a sense of luxury as a gold-plated surface color for a watch exterior part.
In addition, since Au-Ag alloy plating contains silver, it has poor corrosion resistance and discolors due to sweat, and if left exposed to the atmosphere, discolors within 1 to 2 months of being carried, spoiling its aesthetic appearance. I end up. Furthermore, since the hardness is as low as HV170 to 190, the wear resistance is also poor. For the above reasons, Au-
Ag-based alloy plating cannot be used as a finishing plating, and the Au-Ni-based alloy plating that is applied as a finishing plating has a calm and luxurious gold color tone, which meets our requirements. It matches. However, due to the high stress in the plating layer, this Au-Ni alloy plating has a maximum thickness of about 3 μm, and if it is applied with a moped of more than this, cracks will occur in the plating layer. decreases corrosion resistance. In addition, Au-Ni alloy plating has a low hardness of HV220-230, and the plating thickness is as thin as 3μ, so each corner of the watch's exterior parts wears out after about 2 to 3 months of use. As a result, the Au-Ag alloy plating of the base plating is exposed, and an extreme difference in color tone occurs between the base plating and the Au-Ni alloy plating, which is undesirable in terms of appearance. Also,
When the Au-Ag alloy plating of the base plating is exposed, the Ag in the component causes spot-like corrosion.
Decreases corrosion resistance. Furthermore, in terms of cost, this Au-
Ni-based alloy plating has a gold phase of 22 to 23, which is close to pure gold, making it expensive. The purpose of the present invention is to cover such drawbacks by adding Au-
After applying Ag-Cu alloy plating, for example, Au plating or Au-Ni alloy plating,
Another object of the present invention is to provide a gold-plated watch exterior part that has corrosion resistance and abrasion resistance by plating with an Au-Cu alloy, and has a luxurious appearance. A detailed explanation of the present invention will be given below. The gold plating structure of the present invention includes applying Au-Ag-Cu alloy plating as a base plating to the surface of a material using nickel silver or brass material,
On top of that, Au-Ni alloy plating is applied.
In this gold plating configuration, the Au-Ag-Cu alloy plating used is AglO~25%, Cul~1
0%, the balance consists of gold and unavoidable impurities. The characteristic of this Au-Ag-Cu alloy plating is that the color tone is similar to that of finish plating, such as Au, Au-Ni alloy, or Au-Cu alloy, and has a cold color with a slight reddish tinge. Finished Au-N while I was carrying it.
Even if the I-based alloy plating wears out, there is no difference in color tone compared to conventional Au-Ag-based alloy plating, and the appearance is less likely to be damaged. Regarding the thickness, according to the results of mobile tests, a plating thickness of 3μ or more is sufficient; if it exceeds 10μ, cracks will occur and it is not practical, and if it is less than 1μ, it will have poor corrosion resistance and wear resistance. It becomes a problem. Furthermore, in terms of corrosion resistance, compared to conventional Au-Ag alloy plating, it does not discolor when left in the atmosphere.
I found it to be excellent. Au-Ag-C of the present invention
When the Ag content exceeds 25% or more, the u alloy plating becomes a gold color with a strong yellowish tinge, further reducing the corrosion resistance. 2
Furthermore, if the Ag content is less than 10%, the color becomes gold with a strong reddish tinge, making it impossible to obtain the desired color tone.
Ｃｕの含有量が１０ｑ１）以上になると、赤昧の強い金
色となる。Ｃｕの含有量が１％以下になると、黄味の強
い金色となり、更には、耐食性を低下させる。２本発明
のＡｕ−Ａｇ−Ｃｕ合金メツキは、金相がＫｌ７〜Ｋ２
Ｏ位と、従来のＡｕ−Ａｇ合金メツキと同じ位であり、
色調の点では、仕上げのＡｕ−Ｎｉ系合金メツキにほぼ
近いものである。When the Cu content is 10q1) or more, the color becomes a rich golden color. When the Cu content is 1% or less, the color becomes a strong yellowish gold color and furthermore, the corrosion resistance is reduced. 2 The Au-Ag-Cu alloy plating of the present invention has a gold phase of Kl7 to K2.
The O position is the same as that of conventional Au-Ag alloy plating,
In terms of color tone, it is almost similar to the finished Au-Ni alloy plating.
以下、本発明による金メツキ構成と従来の金メ ｃツキ
構成について、図を引用して説明する。第１図は、従来
の金メツキ構成。１−ａは、素材０１−ｂは、Ａｕ−Ａ
ｇ系合金メツキ０１−ｃは、Ａｕ−Ｎｉ系合金メツキで
ある。Hereinafter, the gold plating structure according to the present invention and the conventional gold plating structure will be explained with reference to the drawings. Figure 1 shows the conventional gold plating configuration. 1-a is material 01-b is Au-A
The g-based alloy plating 01-c is an Au-Ni alloy plating.
第２図は、本発明による金メツキ構成。２−ａは、素材
。FIG. 2 shows a gold-plated configuration according to the present invention. 2-a is the material.
２−ｂ こは、Ａｕ−Ａｇ−Ｃｕ系合金メツキ０２−ｃ
は、Ａｕ−Ｎｉ系合金メツキである。2-b This is Au-Ag-Cu alloy plating 02-c
is Au-Ni alloy plating.
本発明の中で示している時計用外装部品とは、側，ウラ
ブタ，りユーズ，見切板，ガラス縁，針，文字板等であ
る。The exterior parts for a timepiece shown in the present invention include the sides, back cover, rear panel, parting plate, glass rim, hands, dial plate, and the like.
（Ａ）：従来例、次の条件で、黄銅の時計用側の表面に
メツキを施した。(A): Conventional Example: The surface of the brass watch side was plated under the following conditions.
”Ｆトり一乙．乙μ ０：本発明、次の条件で、 にメツキを施した。“F Toriichi Otsu. Otsuμ 0: The present invention, under the following conditions, I applied plating to it.
黄銅の時計用側の表面
上記の条件でメツキを施した時計用側について耐摩耗性
試験を行なつたところ、Ａは、摩耗後にメツキ表面の摩
耗部と非摩耗部に極端な色調差が見られた。Brass watch side surface When a wear resistance test was conducted on the watch side plated under the above conditions, in A, there was an extreme difference in color tone between the worn and non-worn areas of the plated surface after wear. It was done.
摩耗減量は、３μであつた。Ｂは、摩耗後に摩耗部と非
摩耗部には、色調差は見られず、摩耗減量は、２．７μ
であつた。更に、ＡとＢの摩耗した時計用側について、
耐食性試験を行なつたところ、Ａは、３〜４時間位より
変色がはじまつたが、Ｂは、２４時間で、問題なかつた
。又、Ａｕ−Ａｇ−Ｃｕ合金メツキの組成も、重量比で
Ａｕ７５％，Ａｇ２Ｏ％，Ｃｕ５％となつており、色調
も赤みのあるコールド色を呈していた〇耐摩耗性試験条
件：時計用外装部品のメツキ表面を毛皮裏でストローク
４〜５ｃｎ］，荷重５００ｇで、往復１．５万回摩擦す
る。耐食性試験条件：時計用外装部品を人工汗中に全部
浸漬した状態で容器を密閉し、４０℃中に２４時間放置
する。The wear loss was 3μ. In B, there is no difference in color tone between the worn part and the non-worn part after abrasion, and the abrasion loss is 2.7μ.
It was hot. Furthermore, regarding the worn watch sides of A and B,
When a corrosion resistance test was carried out, it was found that color change started to occur in case A after about 3 to 4 hours, but there was no problem in case B after 24 hours. In addition, the composition of the Au-Ag-Cu alloy plating was 75% Au, 2O% Ag, and 5% Cu by weight, and the color tone was a cold reddish color. 〇Abrasion resistance test conditions: Watch exterior Rub the plating surface of the part with the back of the fur back and forth 15,000 times with a stroke of 4 to 5 cm] and a load of 500 g. Corrosion resistance test conditions: The outer parts of the watch are completely immersed in artificial sweat, the container is sealed, and the container is left at 40° C. for 24 hours.
第１図は従来例、第２図は本発明それぞれにおけるメツ
キ層断面図である。FIG. 1 is a sectional view of the plating layer in the conventional example, and FIG. 2 is a sectional view of the plating layer in the present invention.
Claims (1)
比で、Ａｇ１０〜２５％、Ｃｕ１〜１０％、残部Ａｕ及
び不可避不純物からなるＡｕ〜Ａｇ−Ｃｕメッキを厚み
１〜１０μの範囲で施したことを特徴とする時計用外装
部品。1 Au to Ag-Cu plating consisting of 10 to 25% Ag, 1 to 10% Cu, and the balance Au and unavoidable impurities is applied between the material and the gold or gold alloy finish plating to a thickness of 1 to 10 μm. Exterior parts for watches that are characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5065880A JPS5927396B2 (en) | 1980-04-17 | 1980-04-17 | Exterior parts for watches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5065880A JPS5927396B2 (en) | 1980-04-17 | 1980-04-17 | Exterior parts for watches |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56146892A JPS56146892A (en) | 1981-11-14 |
| JPS5927396B2 true JPS5927396B2 (en) | 1984-07-05 |
Family
ID=12865045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5065880A Expired JPS5927396B2 (en) | 1980-04-17 | 1980-04-17 | Exterior parts for watches |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5927396B2 (en) |
-
1980
- 1980-04-17 JP JP5065880A patent/JPS5927396B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56146892A (en) | 1981-11-14 |
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