JPS6358231B2 - - Google Patents
Info
- Publication number
- JPS6358231B2 JPS6358231B2 JP486581A JP486581A JPS6358231B2 JP S6358231 B2 JPS6358231 B2 JP S6358231B2 JP 486581 A JP486581 A JP 486581A JP 486581 A JP486581 A JP 486581A JP S6358231 B2 JPS6358231 B2 JP S6358231B2
- Authority
- JP
- Japan
- Prior art keywords
- plating
- gold
- alloy plating
- alloy
- watch
- 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 53
- 239000010931 gold Substances 0.000 claims description 23
- 229910017398 Au—Ni Inorganic materials 0.000 claims description 11
- 239000010956 nickel silver Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- 229910001020 Au alloy Inorganic materials 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 239000003353 gold alloy Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 description 21
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 17
- 229910045601 alloy Inorganic materials 0.000 description 11
- 239000000956 alloy Substances 0.000 description 11
- 229910000846 In alloy Inorganic materials 0.000 description 10
- 229910001316 Ag alloy Inorganic materials 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910001097 yellow gold Inorganic materials 0.000 description 4
- 239000010930 yellow gold Substances 0.000 description 4
- PPVNYSRNJQOELF-UHFFFAOYSA-N [K].[Au].N#CC#N Chemical compound [K].[Au].N#CC#N PPVNYSRNJQOELF-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 229910002710 Au-Pd Inorganic materials 0.000 description 2
- 229910002708 Au–Cu Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- -1 Potassium cyanindium Chemical compound 0.000 description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Natural products OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 150000002343 gold Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- HKSGQTYSSZOJOA-UHFFFAOYSA-N potassium argentocyanide Chemical compound [K+].[Ag+].N#[C-].N#[C-] HKSGQTYSSZOJOA-UHFFFAOYSA-N 0.000 description 2
- HELHAJAZNSDZJO-OLXYHTOASA-L sodium L-tartrate Chemical compound [Na+].[Na+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O HELHAJAZNSDZJO-OLXYHTOASA-L 0.000 description 2
- 239000001433 sodium tartrate Substances 0.000 description 2
- 229960002167 sodium tartrate Drugs 0.000 description 2
- 235000011004 sodium tartrates Nutrition 0.000 description 2
- PXRKCOCTEMYUEG-UHFFFAOYSA-N 5-aminoisoindole-1,3-dione Chemical compound NC1=CC=C2C(=O)NC(=O)C2=C1 PXRKCOCTEMYUEG-UHFFFAOYSA-N 0.000 description 1
- 229910017392 Au—Co Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 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
- 238000005498 polishing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 210000004243 sweat Anatomy 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、時計側（銅、裏ブタ、縁など）バン
ド、リユーズ等のAu−Ag−In系合金メツキを施
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 an exterior part for a watch that is coated with Au-Ag-In alloy plating, such as a watch side (copper, back cover, edge, etc.) band, reuse, etc.
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系合金メツ
キまたは、Au−Co、Au−Cu、Au−Pd、Au−
Sn系等の合金メツキを行つていた。この金メツ
キ構成において、仕上げメツキとして施される
Au−Ni系合金メツキは、色調の点でおちついた
高級感のある金色を呈し、我々の要求にマツチし
ている。しかし、Au−Ni系合金メツキは、現在
K23と金相が高く、しかも、メツキ層の応力が高
いために、3μ位が厚付の限界である。また、金
相を下げようとしてNiをふやすと色の点とメツ
キ応力の点で不可能である。したがつて、現在の
ように金高とうの中で、コスト的にに大きなネツ
クとなつている。仕上げメツキとしては他にAu
−Co、Au−Cu、Au−Pd、Au−Sm系等の合金
メツキがあるがやはりAu−Ni系合金メツキと同
様に厚付ができず、さらに金相が高いためコスト
的に大きなネツクとなつている。さらに、基部金
メツキとして使用されているAu−Ag系合金メツ
キは、金相もK14〜K18と低く、数十μの厚付が
可能であるが、現行よりAgの含有量をふやし金
相を落としK14以下になつていくと、本来イエロ
ーゴールド色を呈していたものが、黄味がなくな
り、白色になつてしまい、仕上のAu−Ni系合金
メツキが摩耗した場合、極端な色調差が生じると
共に、Agの含有量を増加したことによる耐食性
の低下が見られ、これまたコストダウンになら
ず、大きなネツクとなつている。 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, as a finishing plating, Au-Ni alloy plating or Au-Co, Au-Cu, Au-Pd, Au-
Alloy plating, such as Sn-based, was performed. In this gold plating configuration, it is applied as a finishing plating.
The Au-Ni alloy plating has a calm and luxurious golden color, which meets our requirements. However, Au-Ni alloy plating is currently
Due to the high K23 and gold phase and the high stress of the plating layer, the maximum thickness is around 3μ. Furthermore, increasing Ni in an attempt to lower the gold phase is impossible in terms of color and plating stress. Therefore, in the current high-money situation, it has become a major cost liability. Other finishing plating is Au.
There are alloy platings such as -Co, Au-Cu, Au-Pd, and Au-Sm, but like Au-Ni alloy plating, they cannot be thickly plated, and also have a high metal phase, which poses a large cost burden. It's summery. Furthermore, the Au-Ag alloy plating used as the base gold plating has a low gold phase of K14 to K18, and can be applied to a thickness of several tens of microns, but the gold phase has been increased by increasing the Ag content compared to the current one. When the color becomes lower than K14, the originally yellow gold color loses its yellowish tinge and becomes white, and when the finishing Au-Ni alloy plating wears away, an extreme difference in color tone occurs. At the same time, a decrease in corrosion resistance was observed due to the increased content of Ag, which is also a major bottleneck in preventing cost reductions.
本発明の目的は、このような欠点をカバーする
ために、素材とAu−Ni系の合金メツキとの間に
Au−Ag−In系合金メツキを施こすことにより、
コスト的に安価で、耐食性のよい金メツキを施し
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 eliminate such drawbacks by creating a structure between the material and the Au-Ni alloy plating.
By applying Au-Ag-In alloy plating,
To provide an exterior part for a watch which is inexpensive in terms of cost and is plated with gold and has good corrosion resistance.
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に適用されている金
メツキの構成は、洋白材または黄銅材を使用した
素材の表面に、中間メツキ層としてAu−Ag−In
系合金メツキを施し、その上に仕上げメツキ層と
してAu−Ni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、Au−Ag−In系合金メ
ツキは重量比で、Ag40〜55％、In5〜15％、残部
金及び不可避不純物からなるものである。この
Au−Ag−In系合金メツキの特徴としては、従来
のAu−Ag系合金メツキに比べ、金相が２〜３カ
ラツト位低くでき、コスト的に非常に安価である
こと。さらには、Inは比較的空気中で酸化されに
くく、金相を下げる量だけInが入つても、耐食性
が従来のAu−Ag系合金メツキに比べて、同等で
あり、しかも、メツキ液に使用されるIn化合物が
黄色を呈しているため、金層を下げても、色調が
かわらずイエローゴールド色を呈している。ま
た、InはCdおよびZnに比べ非常に軟らかい金属
でAu−Agとの合金を作つても、Hv＝150〜170
となり、メツキ応力が少なく、数十μの厚付メツ
キも可能である。本発明のAu−Ag−In系合金メ
ツキは、Agの含有量が55％をこえると、色調が
白色になり、耐食性を低下させる。また、Agの
含有量が40％以下であると、その分金相が高くな
り、コストアツプとなつてしまう。Inの含有量が
15％を越えると、色調が白色を呈し、耐食性も低
下する。また、Inの含有量が５％以下であると、
大半がAuあるいはAgで占められるため、金相も
高くコストアツプとなる。さらには、Agの含有
量も多くなるため、耐食性の低下を招くことにな
る。本発明のAu−Ag−In合金メツキは金相が
K10〜K12位で、従来のAu−Ag系合金メツキに
比べ、コスト的に安価である。また色調の点で
も、金相が低い分を、In金属でおぎない、従来の
Au−Ag系合金メツキと同じイエローゴールド色
を呈している。 A detailed explanation of the present invention will be given below. The structure of the gold plating applied to the watch exterior parts of the present invention is that Au-Ag-In is used as an intermediate plating layer on the surface of a material made of nickel silver or brass.
A plating layer made of an alloy based on Au-Ni is applied thereon as a final plating layer.
In this gold plating structure, the Au-Ag-In alloy plating consists of 40 to 55% Ag, 5 to 15% In, and the balance gold and unavoidable impurities. this
The characteristic of Au-Ag-In alloy plating is that compared to conventional Au-Ag alloy plating, the gold phase can be lowered by about 2 to 3 carats, and the cost is very low. Furthermore, In is relatively difficult to oxidize in the air, and even if In is added in an amount that lowers the gold phase, the corrosion resistance is equivalent to that of conventional Au-Ag alloy plating, and it can be used in plating liquid. Since the In compound used in the process is yellow, the color tone remains yellow-gold even when the gold layer is lowered. In addition, In is a very soft metal compared to Cd and Zn, and even when alloyed with Au-Ag, Hv = 150 to 170
Therefore, plating stress is low, and plating with a thickness of several tens of microns is possible. When the Ag content of the Au-Ag-In alloy plating of the present invention exceeds 55%, the color tone becomes white and the corrosion resistance decreases. Furthermore, if the Ag content is less than 40%, the gold phase will increase accordingly, resulting in an increase in cost. The content of In
If it exceeds 15%, the color becomes white and the corrosion resistance decreases. In addition, if the In content is 5% or less,
Since most of the material is made up of Au or Ag, the metal content is also high, increasing costs. Furthermore, since the Ag content also increases, corrosion resistance deteriorates. The Au-Ag-In alloy plating of the present invention has a gold phase.
It is approximately K10 to K12, and is cheaper in cost than conventional Au-Ag alloy plating. In addition, in terms of color tone, the low gold phase is covered with In metal, compared to conventional
It has the same yellow gold color as Au-Ag alloy plating.
メツキ厚みが0.25μ未満では中間層として効果
が薄く、5μをこえると高価となるので、0.25〜5μ
の間が好ましい。 If the plating thickness is less than 0.25μ, it will not be effective as an intermediate layer, and if it exceeds 5μ, it will be expensive, so 0.25~5μ
Preferably between.
以下、本発明のAu−Ag−In系合金メツキにつ
いて実施例に従つて詳細に説明する。 Hereinafter, the Au-Ag-In alloy plating of the present invention will be explained in detail according to Examples.
実施例 １
銅素材として洋白材を用い、プレス、研磨仕上
げした後、光沢ニツケルメツキを、温度20℃、
DK＝1.0A／ｄm2、1μ付け、その上にAu−Ag−
In合金メツキを、温度60℃、DK＝1.5A／ｄm2、
PH＝8.5、3μ施こし、さらに、Au−Ni系合金メツ
キを、温度60℃、DK＝1.2A／ｄm2、PH＝3.5、2μ
を施こした。具体的メツキ条件は次のとうりであ
る。Example 1 Nickel silver was used as the copper material, and after pressing and polishing, glossy nickel plating was applied at a temperature of 20°C.
DK=1.0A/dm 2 , 1μ attached, Au−Ag−
In alloy plating, temperature 60℃, DK=1.5A/dm 2 ,
PH=8.5, 3μ applied, and Au-Ni alloy plating at 60℃, DK=1.2A/ dm2 , PH=3.5, 2μ
was carried out. The specific plating conditions are as follows.
合成組成
Au−Ag−In 15ｇ／
シアン金カリウム 10ｇ／
シアン銀カリウム 0.45ｇ／
シアンインジウムカリウム 50ｇ／
酒石酸ナトリウム
Au−Ni系合金メツキを、温度60℃、DK＝
1.2A／ｄm2、PH＝3.5、2μを施こした。具体的メ
ツキ条件は次のとおりである。Synthetic composition Au-Ag-In 15g/ Potassium cyanogen gold 10g/ Potassium cyanide silver 0.45g/ Potassium cyanindium 50g/ Sodium tartrate Au-Ni alloy plated at 60℃, DK=
1.2A/dm 2 , PH=3.5, 2μ was applied. The specific plating conditions are as follows.
合金組成
Au−Ag−In
シアン金カリウム 15ｇ／
シアン銀カリウム 10ｇ／
シアンインジウムカリウム 0.45／
酒石酸ナトリウム 50ｇ／
Au−Ni
シアン金カリウム 12ｇ／
スルフアミン酸ニツケル 12ｇ／
｛クエン酸およびクエン酸ナトリウム
80ｇ／
上記の方法にてメツキ付したものと、従来の金
メツキ付けを行なつた時計用側で、耐食性につい
て40℃で人工汗に浸漬して比較テストを行なつた
結果、同等であつた。Alloy composition Au-Ag-In Potassium cyanogen gold 15g/ Potassium silver cyanide 10g/ Potassium cyanindium 0.45/ Sodium tartrate 50g/ Au-Ni Potassium cyanogen gold 12g/ Nickel sulfamate 12g/ {Citric acid and sodium citrate
80g/ A comparison test was conducted on the corrosion resistance of the watch side plated using the above method and the watch side plated with conventional gold plating by immersing it in artificial sweat at 40℃, and the result was that it was equivalent. .
また、本実施例のAu−Ag−In合金メツキを組
成分析したところ、Au45％、Ag45％、In10％と
なつており、金相が10.8カラツトであり、従来の
Au−Ag系合金メツキの14カラツトに比べ、３カ
ラツト位低く、15％位のコストダウンが可能とな
つた。さらに、色調もイエローゴールド色を呈
し、従来のAu−Ag系合金メツキとかわりがなか
つた。以上のように本発明のAu−Ag−In系合金
メツキの採用によりコスト的に安価で、品質のよ
い金メツキの時計用外装部品を供給するものであ
る。 In addition, when the composition of the Au-Ag-In alloy plating of this example was analyzed, it was found to be 45% Au, 45% Ag, and 10% In, and the gold phase was 10.8 carat, which was different from the conventional plating.
Compared to the 14 carat weight of Au-Ag alloy plating, this is about 3 carats lower, making it possible to reduce costs by about 15%. Furthermore, the color tone was yellow gold, which was no different from conventional Au-Ag alloy plating. As described above, by employing the Au-Ag-In alloy plating of the present invention, it is possible to provide a gold-plated watch exterior part that is inexpensive and of good quality.
Claims (1)
び不可避的不純物からなるAu−Ag−In系の厚み
0.25〜5μの中間メツキ層と、 前記中間メツキ層上にAu−Ni系金合金仕上メ
ツキ層とを施したことを特徴とする時計用外装部
品。[Claims] 1. Thickness of Au-Ag-In system consisting of 40-55% Ag, 5-15% In, balance Au and inevitable impurities on either nickel silver or brass material.
An exterior part for a watch, comprising: an intermediate plating layer with a thickness of 0.25 to 5μ; and an Au-Ni gold alloy finishing plating layer on the intermediate plating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP486581A JPS57120685A (en) | 1981-01-16 | 1981-01-16 | Constitution of gold plating for armor parts for timepiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP486581A JPS57120685A (en) | 1981-01-16 | 1981-01-16 | Constitution of gold plating for armor parts for timepiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57120685A JPS57120685A (en) | 1982-07-27 |
| JPS6358231B2 true JPS6358231B2 (en) | 1988-11-15 |
Family
ID=11595561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP486581A Granted JPS57120685A (en) | 1981-01-16 | 1981-01-16 | Constitution of gold plating for armor parts for timepiece |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57120685A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH667361GA3 (en) * | 1986-02-04 | 1988-10-14 | ||
| WO1997017482A1 (en) | 1995-11-03 | 1997-05-15 | Enthone-Omi Inc. | Electroplating processes compositions and deposits |
| CN104726909A (en) * | 2015-03-25 | 2015-06-24 | 佛山科学技术学院 | Cyanide-free gold nickel alloy plating electroplate liquid |
-
1981
- 1981-01-16 JP JP486581A patent/JPS57120685A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57120685A (en) | 1982-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0808921B1 (en) | Ornamental member | |
| KR20070026832A (en) | Tin-based plating film and forming method thereof | |
| JPH09148508A (en) | Lead frame for semiconductor device and plastic molded type semiconductor device using the same | |
| JPS6358231B2 (en) | ||
| US5977620A (en) | Lead frame having a Ni-Mn alloy layer and a Pd layer | |
| JPS6353267A (en) | Plating method | |
| JPS6358232B2 (en) | ||
| JPH11121673A (en) | Lead frame | |
| JP3073148B2 (en) | Decorative material | |
| JP3029948B2 (en) | Sn-Cu-Pd alloy plated member, plating bath used for its production | |
| JP2952541B2 (en) | White or gold plated products | |
| JPH03283556A (en) | Ic lead frame | |
| JPH06340983A (en) | Personal ornament with palladium-copper plating film | |
| JPH0241591B2 (en) | ||
| JP3281896B2 (en) | Decorative material | |
| JPH043041B2 (en) | ||
| JPS6028916B2 (en) | Gold plating composition of exterior parts for watches | |
| JPS6358919B2 (en) | ||
| GB2218109A (en) | Semi-bright plating of ornamental articles | |
| JP2977503B2 (en) | Copper-palladium alloy plating solution and plating substrate | |
| JPH11193493A (en) | Nickel-less plated product | |
| JP2000355793A (en) | White plated product and method of manufacturing the same | |
| JPS63271961A (en) | Laed frame | |
| JPS6310236B2 (en) | ||
| JPS602398B2 (en) | Exterior parts for watches |