JPS6310236B2 - - Google Patents
Info
- Publication number
- JPS6310236B2 JPS6310236B2 JP13806379A JP13806379A JPS6310236B2 JP S6310236 B2 JPS6310236 B2 JP S6310236B2 JP 13806379 A JP13806379 A JP 13806379A JP 13806379 A JP13806379 A JP 13806379A JP S6310236 B2 JPS6310236 B2 JP S6310236B2
- Authority
- JP
- Japan
- Prior art keywords
- plating
- alloy plating
- alloy
- gold
- minutes
- 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 124
- 229910000846 In alloy Inorganic materials 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 14
- 239000012535 impurity Substances 0.000 claims description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 20
- 229910045601 alloy Inorganic materials 0.000 description 17
- 239000000956 alloy Substances 0.000 description 17
- 239000010931 gold Substances 0.000 description 17
- 230000007797 corrosion Effects 0.000 description 15
- 238000005260 corrosion Methods 0.000 description 15
- 229910052737 gold Inorganic materials 0.000 description 15
- 239000000203 mixture Substances 0.000 description 14
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 12
- 229910017518 Cu Zn Inorganic materials 0.000 description 10
- 229910017752 Cu-Zn Inorganic materials 0.000 description 10
- 229910017943 Cu—Zn Inorganic materials 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 241000080590 Niso Species 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 5
- 239000010956 nickel silver Substances 0.000 description 5
- 229910002708 Au–Cu Inorganic materials 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 3
- 229910001297 Zn alloy Inorganic materials 0.000 description 3
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 150000002343 gold Chemical class 0.000 description 2
- PQTCMBYFWMFIGM-UHFFFAOYSA-N gold silver Chemical compound [Ag].[Au] PQTCMBYFWMFIGM-UHFFFAOYSA-N 0.000 description 2
- 210000004243 sweat Anatomy 0.000 description 2
- 229910001097 yellow gold Inorganic materials 0.000 description 2
- 239000010930 yellow gold Substances 0.000 description 2
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- 229910017398 Au—Ni Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003353 gold alloy Substances 0.000 description 1
- MSNOMDLPLDYDME-UHFFFAOYSA-N gold nickel Chemical compound [Ni].[Au] MSNOMDLPLDYDME-UHFFFAOYSA-N 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
Description
【発明の詳細な説明】
本発明は、Au−Cu−Zn合金メツキを施した時
計用外装部品に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a watch exterior part plated with an Au-Cu-Zn alloy.
従来、時計用外装部品の金メツキ構成としては
洋白材または黄銅材を使用した素材の表面にまず
Au−Ag系合金メツキを下地メツキとして施し、
その上に仕上げメツキとしてAu−Ni−In系合金
メツキを行なつていた。この金メツキ構成におい
て、下地メツキとして施すAu−Ag系合金メツキ
は、金相K14〜K18位でコスト的には、安価であ
り、メツキ層の応力が少ないため、数十μ以上の
厚付が可能であるが、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
メツ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系合金メツキは、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
カ月で変色し美観を害してしまう。更に硬度が、
Hv170〜180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系合金メツキの上
に更に、仕上げメツキとしてAu−Ni−In系合金
メツキを施こしている。仕上げメツキとして施さ
れるAu−Ni−In系合金メツキは、色調の点にお
ちついた高級感のある金色を呈し、我々の要求す
る色調にマツチしている。しかし、このAu−Ni
−In系合金メツキは、メツキ層の応力が高いため
に、最高3μ位が限度であり、これ以上の厚付を
施こすとメツキ層にクラツクが生じ、このため耐
食性を低下させる。またAu−Ni−In系合金メツ
キは、硬度がHv220〜230位と低く、メツキ厚み
も3μという薄いメツキであるため、特に時計用
外装部品の各コーナー部分が携帯期間２〜３カ月
位で摩耗する事があり、下地メツキAu−Ag系合
金メツキが露出し、下地メツキのAu−Ag系合金
メツキと仕上げメツキのAu−Ni−In系合金メツ
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、このような下地メツキのAu−Ag
系合金メツ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。
下地メツキとしてはAu−Cu合金メツキ（Au60〜
85％、残Cu）、Au−Cu合金メツキ（Au65〜90
％、残Cu）等がある。 Traditionally, gold plating for watch exterior parts was first applied to the surface of materials made of nickel silver or brass.
Au-Ag alloy plating is applied as the base plating,
On top of that, Au-Ni-In alloy plating was applied as a final plating. In this gold plating structure, the Au-Ag alloy plating applied as the base plating has a metal phase of K14 to K18 and is inexpensive, and since the stress in the plating layer is low, it can be applied with a thickness of several tens of microns or more. It is possible, but in terms of color tone, the gold color is pale,
It has a yellow-gold color, and the surface color of gold plating for watch exterior parts lacks a sense of luxury. In addition, since Au-Ag alloy plating contains silver, it has poor corrosion resistance, discolors due to sweat, and can be left in the atmosphere for a period of 1 to 2 days.
It changes color within a month and spoils its aesthetic appearance. Furthermore, the hardness
Since the Hv is low at around 170-180, its wear resistance is also poor. For the above reasons, Au-Ni-In alloy plating is further applied as a finishing plating on top of the Au-Ag alloy plating. The Au-Ni-In alloy plating applied as a finishing plating has a calm and luxurious golden color, matching the color tone we require. However, this Au-Ni
-In-based alloy plating has a maximum thickness of about 3μ due to high stress in the plating layer, and if it is thicker than this, cracks will occur in the plating layer, which will reduce corrosion resistance. In addition, Au-Ni-In alloy plating has a low hardness of 220 to 230 Hv, 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. The Au-Ag alloy plating of the base plating is exposed, and an extreme difference in color tone occurs between the Au-Ag alloy plating of the base plating and the Au-Ni-In alloy plating of the finish plating. Undesirable in appearance. In addition, Au-Ag with such a base plating
Due to the exposure of the alloy plating, the
Ag causes spot corrosion and reduces corrosion resistance.
As the base plating, Au-Cu alloy plating (Au60 ~
85%, residual Cu), Au-Cu alloy plating (Au65~90
%, residual Cu), etc.
本発明の目的は、このような欠点をカバーする
ために、下地メツキAu−Ag系合金メツキと仕上
げメツキAu−Ni−In系合金メツキとの間に、Au
−Cu−Zn合金メツキをを施こすことにより、耐
食性及び耐摩耗性があり、高級感のある金メツキ
を施した時計用外装部品を提供することにある。 The purpose of the present invention is to cover such drawbacks by adding Au-Ag alloy plating between the base plating Au-Ag alloy plating and the finishing plating Au-Ni-In alloy plating.
- By applying Cu-Zn alloy plating, the objective is to provide a gold-plated watch exterior part that has corrosion resistance and wear resistance and has a luxurious feel.
本発明の時計用外装部品は、素材の上に施され
るAu−Ag系下地メツキと、仕上メツキとして施
されるAu−Ni−In系の合金メツキとの間に、重
量比でCu10〜25％、Zz2〜４％、残部Au及び不
可避不純物から成るAu−Cu−Znメツキを厚み
0.25〜5μ範囲で施したことを特徴とする。 The exterior parts for watches of the present invention have a weight ratio of Cu10 to 25 between the Au-Ag base plating applied on the material and the Au-Ni-In alloy plating applied as the finishing plating. %, Zz2~4%, the balance is Au-Cu-Zn plating consisting of Au and unavoidable impurities.
It is characterized by being applied in the range of 0.25 to 5μ.
以下本発明の詳細な説明について以下に述べ
る。本発明の時計用外装部品はそのメツキ構成と
して、洋白材または黄銅材を使用した素材の表面
にまず下地メツキとしてAu−Ag系合金メツキを
施し、その上にAu−Cu−Zn合金メツキを施し、
更にその上に仕上げメツキとしてAu−Ni−In系
合金メツキを施したものである。この金メツキ構
成の中で、使用するAu−Cu−Zn合金メツキは重
量比で、Cu10〜25％、Zn2〜４％残部金及び不可
避不純物からなるものである。このAu−Cu−Zn
合金メツキの特徴としては、メツキ層自体の硬度
が硬く、Hv350位になり、このため耐摩耗性の点
ですぐれ、従来のAu−Ag系合金メツキ及びAu
−Ni−In系合金メツキに比べ、数倍以上の耐久
性がある。また色調の点でもAu−Ni−In系合金
メツキの高級感ある色調が得られるため、携帯途
中でたとえ仕上げメツキのAu−Ni−In系合金メ
ツキが摩耗しても、色調の差がなく、外観をそこ
なうことが少ない。しかもAu−Cu−Zn合金メツ
キが硬質であるためにこの層でメツキの摩耗を防
止する事ができる。また、厚みについては、携帯
試験の結果によれば、メツキ層2μあれば十分で
あるが、0.25μ以下だと効果がなく、5μ以下だと
コスト面での問題がある。更に耐食性も従来の下
地メツキAu−Ag系合金メツキに比べ、すぐれて
いることもわかつた。結果は表−１に示す通りで
ある。本発明のAu−Cu−Zn合金メツキは、Cu
の含有量が25％を越えると、赤味が強い金色とな
り、更に耐食性を低下させる。またCu含有量100
％未満になると、所望の硬度が得られない。Zn
の含有量が４％を越えると、赤味のない黄色の強
い金色となり、硬度及び耐食性を低下させる。ま
たZn含有量が２％以下になると、白味がほとん
どない赤味の強い金色となる。本発明のAu−Cu
−Zn合金メツキは、金相がK18〜K21位であり、
仕上げのAu−Ni−In系合金メツキに比べて、コ
スト的に安価である。 A detailed explanation of the present invention will be given below. The exterior parts for watches of the present invention have a plating structure in which Au-Ag alloy plating is first applied as a base plating to the surface of a material made of nickel silver or brass, and then Au-Cu-Zn alloy plating is applied on top of that. alms,
Furthermore, Au-Ni-In alloy plating is applied thereon as a finishing plating. In this gold plating structure, the Au--Cu--Zn alloy plating used is composed of 10 to 25% Cu, 2 to 4% Zn, and the balance gold and unavoidable impurities. This Au−Cu−Zn
The characteristics of alloy plating are that the hardness of the plating layer itself is hard, around Hv350, and therefore it has excellent wear resistance, compared to conventional Au-Ag alloy plating and Au
-Several times more durable than Ni-In alloy plating. In addition, in terms of color tone, the luxurious color tone of the Au-Ni-In alloy plating can be obtained, so even if the Au-Ni-In alloy plating of the finishing plating wears out while carrying, there will be no difference in color tone. It rarely damages the appearance. Moreover, since the Au-Cu-Zn alloy plating is hard, this layer can prevent the plating from being worn out. Regarding the thickness, according to the results of cell phone tests, a plating layer of 2μ is sufficient, but if it is less than 0.25μ it is ineffective, and if it is less than 5μ there are problems in terms of cost. It was also found that the corrosion resistance was superior to that of the conventional base plating, Au-Ag alloy plating. The results are shown in Table-1. The Au-Cu-Zn alloy plating of the present invention is made of Cu
If the content exceeds 25%, the color becomes gold with a strong reddish tinge, further reducing corrosion resistance. Also Cu content 100
If it is less than %, the desired hardness cannot be obtained. Zn
If the content exceeds 4%, the color becomes strong yellow with no reddish tint, resulting in decreased hardness and corrosion resistance. Furthermore, when the Zn content is less than 2%, the color becomes golden with a strong reddish tinge and almost no whitishness. Au-Cu of the present invention
−Zn alloy plating has a gold phase of K18 to K21,
It is cheaper in cost than the finishing Au-Ni-In alloy plating.
また、本発明において、下地メツキにAu−Ag
系合金メツキを用いたのは、Au−Ag系の合金メ
ツキの色調は、素材上にメツキをつける場合に容
易に密着力のよいメツキとなることによるもので
あり、さらに、色調もイエローゴールドで高級感
は余り期待出来ないが、Au−Ag系合金メツキの
上に施す金合金メツキに対して同色系であるの
で、Au−Ag系の上に施されるメツキの金色の色
調を損なうことが少ないことによる。 In addition, in the present invention, Au-Ag is used for the base plating.
The reason why we used Au-Ag alloy plating is that the color tone of Au-Ag alloy plating can easily form a plating with good adhesion when applied to the material, and the color tone is also yellow gold. Although you cannot expect much luxury, it is the same color as the gold alloy plating applied on top of the Au-Ag alloy plating, so it will not spoil the golden tone of the plating applied on the Au-Ag system. By being less.
さらに、仕上げメツキとして、Au−Ni−In系
合金メツキを用いたのは、硬度はやや劣るものの
高級感のある金色の色調が得られることによる。 Furthermore, the reason why we used Au-Ni-In alloy plating as the finishing plating is that although it has a slightly inferior hardness, it provides a luxurious golden color tone.
以下、本発明による金メツキ構成と従来の金メ
ツキ構成について、図を引用して説明する。 Hereinafter, the gold plating structure according to the present invention and the conventional gold plating structure will be explained with reference to the drawings.
第１図は、従来の金メツキ構成。１−ａは素
材、１−ｂはAu−Ag系合金メツキ。１−ｃは
Au−Ni−In系合金メツキである。第２図は本発
明による時計用外装部品の金メツキ構成を示す図
である。２−ａはステンレススチール、黄銅、洋
白などの素材。２−ｂはAu−Ag系合金メツキ。
２−ｃはAu−Cu−Zn合金メツキ。２−ＤはAu
−Ni−In系合金メツキである。 Figure 1 shows the conventional gold plating configuration. 1-a is the material, 1-b is the Au-Ag alloy plating. 1-c is
Au-Ni-In alloy plating. FIG. 2 is a diagram showing a gold plating structure of an exterior part for a timepiece according to the present invention. 2-a is made of materials such as stainless steel, brass, and nickel silver. 2-b is Au-Ag alloy plating.
2-c is Au-Cu-Zn alloy plating. 2-D is Au
-Ni-In alloy plating.
第２図では、ニツケルメツキの構成を省略した
が、これは下地メツキをつける上で、素材との密
着性を確保するために、従来しばしば用いられる
ものであり、下地メツキと素材との密着性が確保
されれば省略しても差支えない。 In Figure 2, the structure of the nickel plating is omitted, but this is often used in the past to ensure adhesion to the material when attaching the base plating, and the adhesion between the base plating and the material is If it is secured, it can be omitted.
実施例 １
(A) 本発明
次の条件と順序で素材である時計用側の表面
にメツキを施した。Example 1 (A) Present invention Plating was applied to the surface of the watch side of the material under the following conditions and order.
普通浴ニツケル
浴組成 NiSO4・、7H2O 140ｇ／
NH4Cl 14ｇ／
H3BO4 15ｇ／
PH 6.0、温度 20℃
DK 1.0A／ｄm2、時間 4.5分
Au−Ag合金メツキ
浴組成 KAu（CN）2 15ｇ／
KAg（CN）2 15ｇ／
KCN 120ｇ／
PH 8.5 温度 60℃
DK 1.5、時間 8.5分
Au−Cu−Zn合金メツキ
浴組成 KAu（CN）2 13ｇ／
KCu（CN）2 12ｇ／
KZn（CN）2 0.3ｇ／
KCN 20ｇ／
PH 10、温度 65℃
DK 1.5、時間 10.5分
Au−Ni−In合金メツキ
浴組成 KAu（CN）2 12ｇ／
NiSO4 ４ｇ／
InSO4 １ｇ／
PH 3.5、温度 60℃
DK 1.2、時間 12分
メツキ構成 Ni−2μ
Au−Ag−（K14）−2.3μ
Au−Cu−Zn−2.2μ
Au−Ni−In−2.2μ
(B) 従来例（比較例）
次の条件と順序で素材である時計用側の表面
にメツキを施した。 Ordinary bath Nickel bath composition NiSO 4・, 7H 2 O 140g / NH 4 Cl 14g / H 3 BO 4 15g / PH 6.0, temperature 20℃ D K 1.0A/dm 2 , time 4.5 minutes Au-Ag alloy plating bath composition KAu (CN) 2 15g/ KAg(CN) 2 15g/ KCN 120g/ P H 8.5 Temperature 60℃ D K 1.5, Time 8.5 minutes Au-Cu-Zn alloy plating bath composition KAu(CN) 2 13g/ KCu(CN) 2 12g / KZn (CN) 2 0.3g / KCN 20g / P H 10, temperature 65℃ D K 1.5, time 10.5 minutes Au-Ni-In alloy plating bath composition KAu (CN) 2 12g / NiSO 4 4g / InSO 4 1g / P H 3.5, temperature 60℃ D K 1.2, time 12 minutes plating configuration Ni−2μ Au−Ag−(K14)−2.3μ Au−Cu−Zn−2.2μ Au−Ni−In−2.2μ (B) Conventional Example (Comparative Example) Plating was applied to the surface of the watch side of the material under the following conditions and order.
普通浴ニツケルメツキ
浴組成 NiSO4・7H2O 140ｇ／
NH4Cl 14ｇ／
H3BO4 115ｇ／
PH 6.0、温度 20℃
DK 1.2A／ｄm2、時間 ４分
Au−Ag合金メツキ
浴組成 KAu（CN）2 15ｇ／
KAg（CN）2 15ｇ／
KCN 130ｇ／
PH 9.0、温度 60℃
DK 1.8、時間 16分
Au−Ni−In合金メツキ
浴組成 KAu（CN）2 12ｇ／
NiSO4 ４ｇ／
InSO4 １ｇ／
PH 3.5、温度 60℃
DK 1.5、時間 11.5分
メツキ構成
Ni−2.0μ
Au−Ag（K14）−4.2μ
Au−Ni−In−2.2μ
上記に示した条件で、時計用外装部品の側の表
面にメツキを施したものについて、耐摩耗性試験
を行なつたところ、(A)は摩耗後メツキ表面の摩耗
部と非摩耗部には色調差は見られず、摩耗減量は
2.5μであつた。(B)は摩耗後メツキ表面にAu−Ag
合金メツキが露出し、非摩耗部のAu−Ni−In合
金メツキとの間に色調差が生じ外観上望ましくな
かつた。摩耗減量は、4.1μと非常に摩耗し、明ら
かに(A)との差があらわれた。（耐摩耗性試験条件
は、次のとおりである。耐摩耗性試験条件：時計
用外装部品のメツキ表面を牛皮裏でストローク４
〜５cm、荷重500ｇで往復３万回摩擦する。）
また、耐摩耗性試験後の耐食性試験を行なつた
ところ、(B)は10時間より摩耗部に点状の腐食が発
生した。(A)は24時間で何も変化が見られなかつ
た。（耐食性試験条件は、次のとおりである。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。）
以上の結果を見ると、(A)の方が(B)よりはるかに
良い品質であつた。 Ordinary bath Nickel plating bath composition NiSO 4・7H 2 O 140g / NH 4 Cl 14g / H 3 BO 4 115g / P H 6.0, temperature 20℃ D K 1.2A/dm 2 , time 4 minutes Au-Ag alloy plating bath composition KAu (CN) 2 15g/ KAg(CN) 2 15g/ KCN 130g/ P H 9.0, temperature 60℃ D K 1.8, time 16 minutes Au-Ni-In alloy plating bath composition KAu(CN) 2 12g/ NiSO 4 4g/ InSO 4 1g / P H 3.5, temperature 60℃ D K 1.5, time 11.5 minutes Plating configuration Ni-2.0μ Au-Ag (K14)-4.2μ Au-Ni-In-2.2μ Under the conditions shown above, When we conducted a wear resistance test on the exterior parts with plating on the surface, we found that (A) shows no difference in color tone between the worn and non-worn parts of the plating surface after wear, and the amount of wear reduced. teeth
It was 2.5μ. (B) shows Au-Ag on the plating surface after wear.
The alloy plating was exposed and there was a difference in color tone between the Au-Ni-In alloy plating on the non-worn parts, which was undesirable in terms of appearance. The abrasion loss was 4.1μ, which was extremely abrasive, and there was a clear difference from (A). (Abrasion resistance test conditions are as follows.Abrasion resistance test conditions: Stroke 4 on the plating surface of the watch exterior part with the back of cowhide.
~5cm, with a load of 500g, it rubs back and forth 30,000 times. ) In addition, when a corrosion resistance test was conducted after the wear resistance test, point-like corrosion occurred in the worn parts of (B) after 10 hours. In (A), no change was observed in 24 hours. (The corrosion resistance test conditions are as follows. Corrosion resistance test conditions: All the exterior parts of the watch are immersed in artificial sweat, the container is sealed, and the container is left at 40℃ for 24 hours.) View the above results And (A) was of much better quality than (B).
実施例 ２
(C) 本発明
次の条件と順序で素材である時計用側の表面
にメツキを施した。Example 2 (C) Present invention Plating was applied to the surface of the watch side of the material under the following conditions and order.
普通ニツケル
浴組成 NiSO4・7H2O 140ｇ／
NH4Cl 14ｇ／
H3BO4 15ｇ／
PH 6.0、温度 20℃
DK 1.2A／ｄm2、時間 ４分
Au−Ag合金メツキ
浴組成 KAu（CN）2 15ｇ／
KAg（CN）2 20ｇ／
KCN 130ｇ／
PH 9.0 温度 60℃
DK 2.0 時間 ９分
Au−Cu−Zn合金メツキ
浴組成 KAu（CN）2 13ｇ／
KCu（CN）2 12ｇ／
KZn（CN）2 0.3ｇ／
KCN 200ｇ／
PH 3.5 温度 65℃
DK 1.5A／ｄm2 時間 11分
Au−Ni−In合金メツキ
浴組成 KAu（CN）2 12ｇ／
NiSO4 ４ｇ／
InSO4 １ｇ／
PH 3.5 温度 60℃
DK 1.2 時間 11.5分
メツキ構成
Ni−2.1μ
Au−Ag（K18）−2.1μ
Au−Cu−Cd−2.1μ
Au−Ni−In−2.3μ
(D) 従来例
次の条件と順序で素材である時計用側の表面
にメツキを施した。 Ordinary nickel bath composition NiSO 4・7H 2 O 140g/ NH 4 Cl 14g/ H 3 BO 4 15g/ P H 6.0, temperature 20℃ D K 1.2A/dm 2 , time 4 minutes Au-Ag alloy plating bath composition KAu ( CN) 2 15g/ KAg(CN) 2 20g/ KCN 130g/ P H 9.0 Temperature 60℃ D K 2.0 Time 9 minutes Au-Cu-Zn alloy plating bath composition KAu(CN) 2 13g/ KCu(CN) 2 12g/ KZn(CN) 2 0.3g/ KCN 200g/ P H 3.5 Temperature 65℃ D K 1.5A/dm 2 hours 11 minutes Au-Ni-In alloy plating bath composition KAu(CN) 2 12g/ NiSO 4 4g/ InSO 4 1g / P H 3.5 Temperature 60℃ D K 1.2 Time 11.5 minutes Plating configuration Ni−2.1μ Au−Ag(K18)−2.1μ Au−Cu−Cd−2.1μ Au−Ni−In−2.3μ (D) Conventional example Next Plating was applied to the surface of the watch side of the material under these conditions and order.
普通浴ニツケル
浴組成 NiSO4・7H2O 140ｇ／
NH4Cl 14ｇ／
H3BO4 15ｇ／
PH 6.0 温度 20℃
DK 1.2A／ｄm2 時間 ４分
Au−Ag合金メツキ
浴組成 KAu（CN）2 15ｇ／
KAg（CN）2 20ｇ／
KCN 130ｇ／
PH 9.0 温度 60℃
DK 2.0 時間 15分
Au−Ni−In
浴組成 KAu（CN）2 12ｇ／
NiSO4 ４ｇ／
InSo4 １ｇ／
PH 3.5 温度 60℃
DK 1.2 時間 11.5分
メツキ構成
Ni−2.1μ
Au−Ag−4.2μ
Au−Ni−In−2.3μ
面にメツキを施したものについて耐摩耗性試験
を行なつたところ、(C)は摩耗後メツキ表面の摩耗
部と非摩耗部には色調差は見られず、摩耗減量は
2.6μであつた。(D)は摩耗後メツキ表面にAu−Ag
合金メツキが露出し、非摩耗部のAu−Ni−In合
金メツキとの間に色調差が生じ、外観上望ましく
なかつた。摩耗減量は4.0μと非常に摩耗し、明ら
かに(C)との差があらわれた。（耐摩耗性試験条件
は、実施例１と同様に行なつた。）
また、耐摩耗性試験後の耐食性試験を行なつた
ところ、(C)は12時間より摩耗部に点状の腐食が発
生した。(B)は24時間で何も変化が見られなかつ
た。（耐食性試験条件は、実施例１と同様に行な
つた。）
以上の結果を見ると、(C)の方が(B)よりはるかに
良い品質であつた。 Ordinary bath Nickel bath composition NiSO 4・7H 2 O 140g/ NH 4 Cl 14g/ H 3 BO 4 15g/ P H 6.0 Temperature 20℃ D K 1.2A/dm 2 hours 4 minutes Au-Ag alloy plating bath composition KAu (CN ) 2 15g/ KAg(CN) 2 20g/ KCN 130g/ P H 9.0 Temperature 60℃ D K 2.0 Time 15 minutes Au-Ni-In Bath composition KAu(CN) 2 12g/ NiSO 4 4g/ InSo 4 1g/ P H 3.5 Temperature 60℃ D K 1.2 Time 11.5 minutes Plating configuration Ni−2.1μ Au−Ag−4.2μ Au−Ni−In−2.3μ When a wear resistance test was conducted on the plated surface, (C ), there is no difference in color tone between the worn part and the non-worn part of the plated surface after wear, and the abrasion loss is
It was 2.6μ. (D) shows Au-Ag on the plating surface after wear.
The alloy plating was exposed and a difference in color tone occurred between the Au-Ni-In alloy plating on the non-worn parts, which was undesirable in terms of appearance. The abrasion loss was 4.0μ, which was extremely abrasive, and there was a clear difference from (C). (The abrasion resistance test conditions were the same as in Example 1.) In addition, when a corrosion resistance test was conducted after the abrasion resistance test, (C) showed spot-like corrosion on the worn part after 12 hours. Occurred. In (B), no change was observed in 24 hours. (The corrosion resistance test conditions were the same as in Example 1.) Looking at the above results, (C) was of much better quality than (B).
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、リユーズ、見切板、ガラス縁、
針、文字板等である。 The watch exterior parts shown in the present invention are:
Side, back cover, reuse, parting board, glass edge,
These include hands, dials, etc.
第１図は従来の金メツキ構成においてのメツキ
層断面図である。第２図は本発明の金メツキ構成
においてのメツキ層断面図である。
１−ａ，２−ａ……素材、１−ｂ，２−ｂ……
金−銀系（Au−Ag系）合金メツキ、１−ｃ，２
−Ｄ……金−ニツケル系−インジウム系（Au−
Ni−In系）合金メツキ、２−ｃ……金−銅−亜
鉛合金メツキ。
FIG. 1 is a sectional view of a plating layer in a conventional gold plating structure. FIG. 2 is a sectional view of the plating layer in the gold plating structure of the present invention. 1-a, 2-a...Material, 1-b, 2-b...
Gold-silver (Au-Ag) alloy plating, 1-c, 2
-D...Gold-Nickel-based-Indium-based (Au-
Ni-In type) alloy plating, 2-c...gold-copper-zinc alloy plating.
Claims (1)
仕上メツキとして施されるAu−Ni−In系の合金
メツキとの間に、重量比でCu10〜25％、Zn2〜４
％、残部Au及び不可避不純物から成るAu−Cu−
Znメツキを厚み0.25〜5μ範囲で施したことを特徴
とする時計用外装部品。[Claims] 1. In an exterior part for a watch, an Au-Ag base plating applied on a material;
Between the Au-Ni-In alloy plating applied as a finishing plating, Cu10~25% and Zn2~4% by weight are added.
%, the balance consists of Au and unavoidable impurities.
Exterior parts for watches characterized by Zn plating applied to a thickness in the range of 0.25 to 5μ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13806379A JPS5662984A (en) | 1979-10-25 | 1979-10-25 | Gold plating constitution of external parts for watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13806379A JPS5662984A (en) | 1979-10-25 | 1979-10-25 | Gold plating constitution of external parts for watch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5662984A JPS5662984A (en) | 1981-05-29 |
| JPS6310236B2 true JPS6310236B2 (en) | 1988-03-04 |
Family
ID=15213104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13806379A Granted JPS5662984A (en) | 1979-10-25 | 1979-10-25 | Gold plating constitution of external parts for watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5662984A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3020765A1 (en) * | 1980-05-31 | 1981-12-10 | Degussa Ag, 6000 Frankfurt | ALKALINE BATH FOR GALVANIC DEPOSITION OF LOW-CARAINE PINK TO YELLOW-COLORED GOLD ALLOY LAYERS |
| US4475991A (en) * | 1983-03-25 | 1984-10-09 | Chugai Denki Kogyo K.K. | Method of diffusion cladding a Fe-containing base material for decorative articles and ornaments with precious metal constituents including Ag |
| CH667361GA3 (en) * | 1986-02-04 | 1988-10-14 | ||
| CH714243B1 (en) * | 2006-10-03 | 2019-04-15 | Swatch Group Res & Dev Ltd | Electroforming process and part or layer obtained by this method. |
-
1979
- 1979-10-25 JP JP13806379A patent/JPS5662984A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5662984A (en) | 1981-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2162205A (en) | Forming coloured coatings by ion plating | |
| JPS6310236B2 (en) | ||
| JPS60138066A (en) | Surface treatment of external parts for timepiece | |
| JP3621874B2 (en) | Watch exterior parts | |
| JP2003096592A (en) | External parts for timepiece | |
| JP2990917B2 (en) | Watch exterior parts | |
| JP2693480B2 (en) | Exterior parts for watch and manufacturing method thereof | |
| US5051317A (en) | Multilayered electroplating process utilizing fine gold | |
| US5029149A (en) | Object capped by a protective layer | |
| JPS58120777A (en) | External parts for timepieces | |
| JP3281896B2 (en) | Decorative material | |
| JPS5850320B2 (en) | Exterior parts for watches | |
| JP3029948B2 (en) | Sn-Cu-Pd alloy plated member, plating bath used for its production | |
| JP2595168B2 (en) | Watch exterior parts and method of manufacturing the same | |
| JPS5864397A (en) | Golden colored external parts for timepieces | |
| JP3645804B2 (en) | Watch exterior parts | |
| JP3638509B2 (en) | Watch exterior parts | |
| JPS5927396B2 (en) | Exterior parts for watches | |
| JPS61594A (en) | Manufacture of sheathing parts for timepiece | |
| JPS5848693A (en) | Armor parts for watch | |
| JPS6237712B2 (en) | ||
| KR960007776B1 (en) | Precious metal coating accessories of plating a corrosion resistant copper alloy on first stage | |
| JPS59140364A (en) | External parts for watch | |
| JPS58104171A (en) | Hard external parts for timepiece | |
| JPS61238953A (en) | External parts for watch |