JPH0563533B2 - - Google Patents
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- JPH0563533B2 JPH0563533B2 JP1005490A JP549089A JPH0563533B2 JP H0563533 B2 JPH0563533 B2 JP H0563533B2 JP 1005490 A JP1005490 A JP 1005490A JP 549089 A JP549089 A JP 549089A JP H0563533 B2 JPH0563533 B2 JP H0563533B2
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Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、光沢のある黒色に着色する金合金装
飾品とその着色法に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a gold alloy ornament that is colored glossy black and a method for coloring the same.
〈従来の技術〉
従来、純金は、極めて柔らかいので、各種の使
用条件に合つた硬さと色調変化を与えるために、
合金の状態で使用される場合が多く、金（Au）
合金は、金−銀（Au−Ag）合金、金−銅（Au
−Cu）合金、金−ニツケル（Au−Ni）合金、金
−鉄（Au−Fe）合金等として種々の用途に用い
られてきた。特に、Au−Ag系、Au−Cu系、Au
−Cu系−Ag系、Au−Ni−Cu系の合金が装飾品
としての用途に対応して多く使用され、Ag、
Ni、Cuの配合量により発色の度合いを調整する
ことができ、色も白、黄、赤の各色を呈すること
ができた。<Conventional technology> Conventionally, pure gold is extremely soft, so in order to give it hardness and color changes that suit various usage conditions,
Gold (Au) is often used in the form of an alloy.
The alloys include gold-silver (Au-Ag) alloy, gold-copper (Au
-Cu) alloy, gold-nickel (Au-Ni) alloy, gold-iron (Au-Fe) alloy, etc., for various purposes. In particular, Au-Ag type, Au-Cu type, Au
-Cu-based-Ag-based and Au-Ni-Cu-based alloys are often used for decorative purposes;
The degree of color development could be adjusted by adjusting the amounts of Ni and Cu, and the colors could be white, yellow, and red.
また、近年、Au−Al系、Au−Cd系の合金の
開発により色も紫、黄緑色が加わつた。 In addition, in recent years, purple and yellow-green colors have been added to the range of colors due to the development of Au-Al and Au-Cd alloys.
〈発明が解決しようとする課題〉
しかし、上記のように白、黄、赤、紫、黄緑の
五色では、装飾品としての多色デザイン化を図る
上で限界があり、上記以外の有色Au合金の開発
が要望されていた。<Problem to be solved by the invention> However, as mentioned above, the five colors of white, yellow, red, purple, and yellow-green have limitations in creating multicolor designs for decorative items, and colored Au other than the above There was a demand for the development of an alloy.
〈課題を解決するための手段〉
本発明は上記に鑑み提案されたもので、
(イ) 純金（Au）、銀（Ag）含有量が30重量％以
下のAu−Ag合金、ニツケル（Ni）含有量30重
量％以下のAu−Ni合金
から選ばれる一種以上と、
コバルト（Cc）と
からなり、
上記(イ)の割合が95〜60重量％であり、Coの割
合が５〜40重量％である金合金の加工品に、各々
の合金の融点以下の温度において、大気中もしく
は大気の酸素分圧より高いかまたは低い酸化雰囲
気中で加熱処理を施した後、空冷、水冷もしくは
油冷を行つて、金合金の加工品の表層部全体を均
一に光沢のある黒色に着色する金合金装飾品とそ
の着色法に関するものである。<Means for Solving the Problems> The present invention has been proposed in view of the above. Consisting of one or more selected from Au-Ni alloys with a content of 30% by weight or less and cobalt (Cc), the proportion of (a) above is 95 to 60% by weight, and the proportion of Co is 5 to 40% by weight. A processed gold alloy product is heat-treated in the atmosphere or in an oxidizing atmosphere higher or lower than the oxygen partial pressure of the atmosphere at a temperature below the melting point of each alloy, and then air-cooled, water-cooled, or oil-cooled. The present invention relates to a gold alloy ornament and a method for coloring the same, in which the entire surface layer of a processed gold alloy product is uniformly colored in glossy black.
上記した(イ)とCoからなる金合金に、Feを加え
てもよい。 Fe may be added to the gold alloy consisting of the above (a) and Co.
上記した(イ)を、Co、Co及びFeのいずれかと組
合せてなる金合金は、(イ)の割合が95〜60重量％で
あり、Co、もしくはCo及びFeの割合が５〜40重
量％である組成物を真空または水冷式の銅ルツボ
を備えたアーク溶解炉、高周波溶解炉等により溶
製することにより得られる。 A gold alloy formed by combining the above (a) with any of Co, Co and Fe has a proportion of (a) of 95 to 60% by weight and a proportion of Co or Co and Fe of 5 to 40% by weight. It can be obtained by melting a composition in an arc melting furnace, high frequency melting furnace, etc. equipped with a vacuum or water-cooled copper crucible.
上記した(イ)とCoとFeとからなる金合金は、具
体的には、
Au−Co合金
Au−Co−Fe合金
Au−Ag−Co合金
Au−Ag−Co−Fe合金
Au−Ni−Co合金
Au−Ni−Co−Fe合金である。 Specifically, the gold alloy consisting of the above (a), Co and Fe is Au-Co alloy Au-Co-Fe alloy Au-Ag-Co alloy Au-Ag-Co-Fe alloy Au-Ni-Co Alloy Au-Ni-Co-Fe alloy.
また、通常、一回の溶解量は、50〜100g程度
が適当であるが、さらに多くても支障はない。 Further, the amount of dissolution at one time is usually about 50 to 100 g, but there is no problem even if the amount is even larger.
上記のように溶製した各合金のインゴツトを真
空もしくは不活性ガス、例えばアルゴンガス雰囲
気中において溶解し、マグネシア、ジルコン、ア
ルミナ、ムライト、シリカ等で作られた鋳型へ鋳
造する。この場合、鋳造時に不活性ガスによる加
圧もしくは遠心力を利用して鋳型内の空洞（キヤ
ビテイ）への充填性を良好にすることが望まし
い。 The ingots of each alloy produced as described above are melted in vacuum or in an inert gas atmosphere, such as argon gas, and cast into a mold made of magnesia, zircon, alumina, mullite, silica, or the like. In this case, it is desirable to use pressurization with an inert gas or centrifugal force during casting to improve filling of the cavity in the mold.
上記のように鋳造した後に得られた製品には、
ヤスリがけ、キサゲ、砥石研磨、バブ研磨を施し
た後、大気中もしくは大気の酸素分圧より高いか
または低い酸化雰囲気中で、通常は800〜900℃で
５〜10分加熱した後、空冷、水冷もしくは油冷を
行つて、本発明の光沢のある黒色に着色する金合
金が得られる。 The product obtained after casting as above includes:
After sanding, scraping, whetstone polishing, and bub polishing, it is heated in the atmosphere or in an oxidizing atmosphere higher or lower than the oxygen partial pressure of the atmosphere, usually at 800 to 900℃ for 5 to 10 minutes, and then air cooled. Water cooling or oil cooling is performed to obtain the shiny black colored gold alloy of the present invention.
上記した加熱工程は、大気中において行うもの
でよく、また、加熱温度は各合金の融点以下の温
度ならば任意に、加熱時間についても任意に変え
ても構わない。 The above-described heating step may be performed in the atmosphere, and the heating temperature may be arbitrarily changed as long as it is below the melting point of each alloy, and the heating time may also be changed arbitrarily.
また、上記した冷却工程は、各種の塩水溶液ま
たは稀酸、稀アルカリ水溶液中での冷却でもよ
い。 Further, the cooling step described above may be performed by cooling in various salt aqueous solutions, dilute acid, or dilute alkali aqueous solutions.
上記した発色処理が済んだ時点で形成された黒
色の光沢度が不充分であれば、再度軽くバフ研磨
を行つた後、都市ガス、プロパンガス等によるガ
スバーナーの炎を製品の表面に短時間あてて、つ
や出しするとよい。 If the glossiness of the black color formed after the above coloring treatment is insufficient, perform light buffing again, and then apply the flame of a gas burner using city gas, propane gas, etc. to the surface of the product for a short period of time. It is best to apply it and polish it.
ところで、本発明の加熱による発色処理は、加
工品の大きさにより異なるが、かなり広い範囲に
とることが可能であり、加熱時間は大気雰囲気下
では300〜1000℃で、加熱時間を長くするほど黒
色層が厚くなるので、より黒色の度合は増す。 By the way, the coloring treatment by heating of the present invention varies depending on the size of the processed product, but can be applied over a fairly wide range, and the heating time is 300 to 1000°C in the air, and the longer the heating time, the more As the black layer becomes thicker, the degree of blackness increases.
従つて、本発明の黒色に着色した金合金の作成
者は、所望する黒色の度合に応じて加熱時間を調
整すればよい。 Therefore, the creator of the black-colored gold alloy of the present invention may adjust the heating time depending on the desired degree of blackness.
通常の加熱時間は１〜10分ほどであり、指輪、
ブローチ等の小さな物では１〜２分、少し大きな
物でも３〜５分で充分のようである。 The normal heating time is about 1 to 10 minutes, and the ring,
It seems that 1 to 2 minutes is sufficient for small items such as brooches, and 3 to 5 minutes for slightly larger items.
尚、上記各合金における(イ)の銀（Ag）、ニツケ
ル（Ni）は、金品位及び機械的特性を調整する
ための添加元素である。即ち、(イ)のAu−Ag合金
及びAu−Ni合金において銀（Ag）、ニツケル
（Ni）の含有量がそれぞれ30重量％より多いと、
強度、硬さ、加工性等の機械的特性が悪くなり、
また、金品位（一般に金合金装飾品の市場には金
含有量が最も低いもので40重量％のものが市販さ
れているのでこれを金含有量の下限とする）が低
くなるので金合金装飾品としての価値が少なくな
る。 Incidentally, silver (Ag) and nickel (Ni) in (a) in each of the above alloys are additive elements for adjusting the gold quality and mechanical properties. That is, if the content of silver (Ag) and nickel (Ni) in the Au-Ag alloy and Au-Ni alloy of (a) is more than 30% by weight,
Mechanical properties such as strength, hardness, and workability deteriorate,
In addition, since the gold quality (generally, gold alloy ornaments with the lowest gold content of 40% by weight are commercially available in the market, this is taken as the lower limit of the gold content), the gold alloy ornaments Its value as a product decreases.
また、コバルト（Co）、鉄（Fe）は、黒色の選
択酸化被膜を形成させるためのものであり、その
総量が40重量％を越えると金品位が低くなるので
金合金装飾品としての価値が少なくなると共に金
合金が硬くなり過ぎて鋳造後の後加工が困難とな
り、また脆くなる。逆にコバルト（Co）、鉄
（Fe）の総量が５重量％よりも少ないと灰色もし
くは灰黒色となつて装飾的価値の高い黒色に発色
しない。 Additionally, cobalt (Co) and iron (Fe) are used to form a black selective oxidation film, and if their total amount exceeds 40% by weight, the gold quality will be low and the value of the gold alloy ornament will be reduced. As the amount decreases, the gold alloy becomes too hard, making post-processing after casting difficult and becoming brittle. On the other hand, if the total amount of cobalt (Co) and iron (Fe) is less than 5% by weight, the color will be gray or gray-black and will not develop into a black color with high decorative value.
第１図はAu−Co−Fe合金１の表層部全体に、
金を含むコバルトと鉄の複合酸化物被膜２を形成
して光沢のある黒色化処理した甲丸指輪の断面図
で、第２図に本発明の着色処理工程を示す。 Figure 1 shows the entire surface layer of Au-Co-Fe alloy 1.
FIG. 2 is a cross-sectional view of a round ring that has been treated to have a glossy black color by forming a composite oxide film 2 of cobalt and iron containing gold, and shows the coloring process of the present invention.
〈実施例〉
最も一般的なAu品位の18カラツト（Au＝75重
量％）のAu合金について実施した例を以下に示
した。<Example> The following is an example in which an Au alloy of 18 karat (Au = 75% by weight), which is the most common Au grade, was used.
実施例 １
Au合金の配合
純Au 30g（75重量％）
電解Co 5g（12.5重量％）
電解Fe 5g（12.5重量％）
上記配合のものをアルゴンガス雰囲気中におい
て、アーク溶解炉を溶製し、Au−Co−Fe合金を
得た。上記Au−Co−Fe合金を真空中で遠心鋳造
を行つて得られた鋳造品（指輪）にヤスリ掛け、
バフ研磨をして表面を仕上げた後、大気中で850
℃で２分間均熱して発色処理した後、水冷した。
黒色層を形成するAuを含有するCoとFeの複合酸
化物の層の厚さは、2μmであつた。Example 1 Au alloy composition Pure Au 30g (75% by weight) Electrolytic Co 5g (12.5% by weight) Electrolytic Fe 5g (12.5% by weight) The above composition was melted in an arc melting furnace in an argon gas atmosphere. An Au-Co-Fe alloy was obtained. The above Au-Co-Fe alloy was centrifugally cast in a vacuum, and the resulting cast product (ring) was sanded.
After buffing and finishing the surface, 850
After soaking at ℃ for 2 minutes for color development treatment, the mixture was cooled with water.
The thickness of the layer of composite oxide of Co and Fe containing Au forming the black layer was 2 μm.
この層にバフ研磨を施し、つや出しを行つたと
ころ、より美しい光沢の黒色を有するAu合金の
製品が得られた。 When this layer was buffed and polished, an Au alloy product with a more beautiful glossy black color was obtained.
実施例 ２
Au合金の配合
純Au 30g（75重量％）
電解Co 10g（25重量％）
実施例１と同様の溶製方法によりAu−Co合金
を得た。その後、遠心鋳造を行つて得られた鋳造
品（指輪）を900℃で２分間均熱して発色処理し
た後、水冷した。黒色層の厚さは１〜2μmであ
り、黒色層は、Coの酸化物にAuが含まれた組成
物であつた。Example 2 Blend of Au alloy Pure Au 30g (75% by weight) Electrolytic Co 10g (25% by weight) An Au-Co alloy was obtained by the same melting method as in Example 1. Thereafter, the cast product (ring) obtained by centrifugal casting was soaked at 900° C. for 2 minutes to develop color, and then cooled with water. The thickness of the black layer was 1 to 2 μm, and the black layer was a composition containing Au in an oxide of Co.
この層にバフ研磨を施し、つや出しを行つたと
ころ、より美しい光沢の黒色を有するAu合金の
製品が得られた。 When this layer was buffed and polished, an Au alloy product with a more beautiful glossy black color was obtained.
実施例 ３
Au合金の配合
純Au 30g（75重量％）
電解Co 8g（20重量％）
電解Fe 2g（５重量％）
実施例１と同様の溶製方法によりAu−Co−Fe
合金をした。その後、遠心鋳造して得られ鋳造品
（指輪）を900℃で２分間均熱して発色処理した
後、空冷した。黒色層の厚さは2.5μmであり、黒
色層は、CoとFeの複合酸化物にAuが含まれた組
成物であつた。Example 3 Au alloy composition Pure Au 30g (75% by weight) Electrolytic Co 8g (20% by weight) Electrolytic Fe 2g (5% by weight) Au-Co-Fe was produced by the same melting method as in Example 1.
Alloyed. Thereafter, the cast product (ring) obtained by centrifugal casting was soaked at 900° C. for 2 minutes to develop color, and then cooled in air. The thickness of the black layer was 2.5 μm, and the black layer was composed of a composite oxide of Co and Fe containing Au.
この層にバフ研磨を施し、つや出しを行つたと
ころ、より美しい光沢の黒色を有するAu合金の
製品が得られた。 When this layer was buffed and polished, an Au alloy product with a more beautiful glossy black color was obtained.
実施例 ４
Au合金の配合
純Au 30g（75重量％）
電解Co 6g（15重量％）
電解Fe 4g（10重量％）
実施例１と同様に溶製、鋳造、加熱による発色
処理を行つた。次いで、バフ研磨によるつや出し
を行つたところ、美しい光沢の黒色を有するAu
合金の製品が得られた。Example 4 Composition of Au alloy Pure Au 30g (75% by weight) Electrolytic Co 6g (15% by weight) Electrolytic Fe 4g (10% by weight) Coloring treatment by melting, casting, and heating was performed in the same manner as in Example 1. Next, when polishing was performed by buffing, the Au had a beautiful glossy black color.
An alloy product was obtained.
実施例 ５
Au合金の配合
純Au 30g（75重量％）
純Ag 4g（10重量％）
電解Co 4g（10重量％）
電解Fe 8g（５重量％）
実施例１と同様に溶製、鋳造、加熱による発色
処理したを行つた。次いで、バフ研磨によるつや
出しを行つたところ、美しい光沢の黒色を有する
Au合金の製品が得られた。Example 5 Au alloy composition Pure Au 30g (75% by weight) Pure Ag 4g (10% by weight) Electrolytic Co 4g (10% by weight) Electrolytic Fe 8g (5% by weight) Melting, casting, Color development treatment was carried out by heating. Next, when polished by buffing, it had a beautiful glossy black color.
An Au alloy product was obtained.
（発明の効果）
以上説明したように、本発明の金合金は、従
来、赤、黄、黄緑、白、紫の５色であつたAu合
金に、黒色を加えることになり、貴金属装飾品と
してより多彩なデザインが可能になるとともに、
装飾品の高付加価値化につながる。(Effects of the Invention) As explained above, the gold alloy of the present invention adds black to the conventional Au alloy, which has five colors of red, yellow, yellow-green, white, and purple, and can be used for precious metal ornaments. As well as allowing for more diverse designs,
This leads to higher added value for decorative items.
また、本発明の光沢のある黒色に着色する金合
金の製造法は、特殊な原材料及び処理装置を必要
としないので、適用性は極めて高い。 Furthermore, the method for producing a gold alloy that is colored shiny black according to the present invention does not require special raw materials or processing equipment, and therefore has extremely high applicability.
第１図は黒色化処理した甲丸指輪の断面図、第
２図は本発明の着色処理工程の概略図である。
FIG. 1 is a cross-sectional view of a round ring that has been blackened, and FIG. 2 is a schematic diagram of the coloring process of the present invention.
Claims (1)
％以下のAu−Ag合金、ニツケル（Ni）含有量
30重量％以下のAu−Ni合金 から選ばれる一種以上と、 コバルト（Cc）とからなり、 上記(イ)の割合が95〜60重量％であり、Coの割
合が５〜40重量％である金合金の加工品の表層部
全体を均一に光沢のある黒色に着色する金合金装
飾品。 ２ (イ) 純金（Au）、銀（Ag）含有量が30重量
％以下のAu−Ag合金、ニツケル（Ni）含有量
30重量％以下のAu−Ni合金 から選ばれる一種以上と、 コバルト（Co）とからなり、 上記(イ)の割合が95〜60重量％であり、Coの割
合が５〜40重量％である金合金の加工品に、各々
の合金の融点以下の温度において、大気中もしく
は大気の酸素分圧より高いかまたは低い酸化雰囲
気中で加熱処理を施した後、空冷、水冷もしくは
油冷を行つて、金合金の加工品の表層部全体を均
一に光沢のある黒色に着色する金合金装飾品の着
色法。 ３ (イ) 純金（Au）、銀（Ag）含有量が30重量
％以下のAu−Ag合金、ニツケル（Ni）含有量
30重量％以下のAu−Ni合金 から選ばれる一種以上と、 コバルト（Co）及び鉄（Fe）とからなり、 上記(イ)の割合が95〜60重量％であり、CoとFe
を合せた割合が５〜40重量％である金合金の加工
品の表層部全体を均一に光沢のある黒色に着色す
る金合金装飾品。 ４ (イ) 純金（Au）、銀（Ag）含有量が30重量
％以下のAu−Ag合金、ニツケル（Ni）含有量
30重量％以下のAu−Ni合金 から選ばれる一種以上と、 コバルト（Co）及び鉄（Fe）とからなり、 上記(イ)の割合が95〜60重量％であり、CoとFe
を合せた割合が５〜40重量％である金合金の加工
品に、各々の合金の融点以下の温度において、大
気中もしくは大気の酸素分圧より高いかまたは低
い酸化雰囲気中で加熱処理を施した後、空冷、水
冷もしくは油冷を行つて、金合金の加工品の表層
部全体を均一に光沢のある黒色に着色する金合金
装飾品の着色法。[Claims] 1. (a) Au-Ag alloy containing pure gold (Au), silver (Ag) content of 30% by weight or less, nickel (Ni) content
Consisting of at least 30% by weight of one or more selected from Au-Ni alloys and cobalt (Cc), the proportion of (a) above is 95 to 60% by weight, and the proportion of Co is 5 to 40% by weight. Gold alloy ornaments that uniformly color the entire surface layer of gold alloy processed products in a glossy black color. 2 (a) Pure gold (Au), Au-Ag alloy with silver (Ag) content of 30% by weight or less, nickel (Ni) content
Consisting of at least 30% by weight of one or more selected from Au-Ni alloys and cobalt (Co), the proportion of (a) above is 95 to 60% by weight, and the proportion of Co is 5 to 40% by weight. Processed gold alloy products are heat treated in the atmosphere or in an oxidizing atmosphere that is higher or lower than the atmospheric oxygen partial pressure at a temperature below the melting point of each alloy, and then air-cooled, water-cooled, or oil-cooled. , a coloring method for gold alloy ornaments that uniformly colors the entire surface layer of the gold alloy processed product a glossy black. 3 (a) Pure gold (Au), Au-Ag alloy with silver (Ag) content of 30% by weight or less, nickel (Ni) content
It consists of at least 30% by weight of one or more selected from Au-Ni alloys, cobalt (Co) and iron (Fe), the proportion of (a) above is 95 to 60% by weight, and Co and Fe
A gold alloy decorative article in which the entire surface layer of a processed gold alloy product having a combined proportion of 5 to 40% by weight is uniformly colored in a glossy black color. 4 (a) Pure gold (Au), Au-Ag alloy with silver (Ag) content of 30% by weight or less, nickel (Ni) content
It consists of at least 30% by weight of one or more selected from Au-Ni alloys, cobalt (Co) and iron (Fe), the proportion of (a) above is 95 to 60% by weight, and Co and Fe
A processed product of a gold alloy with a combined proportion of 5 to 40% by weight is subjected to heat treatment at a temperature below the melting point of each alloy in the atmosphere or an oxidizing atmosphere higher or lower than the oxygen partial pressure of the atmosphere. A method of coloring gold alloy ornaments in which the entire surface layer of the gold alloy product is then uniformly colored in a glossy black by air cooling, water cooling, or oil cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP549089A JPH02185935A (en) | 1989-01-12 | 1989-01-12 | Gold alloy ornaments that are colored glossy black and their coloring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP549089A JPH02185935A (en) | 1989-01-12 | 1989-01-12 | Gold alloy ornaments that are colored glossy black and their coloring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02185935A JPH02185935A (en) | 1990-07-20 |
| JPH0563533B2 true JPH0563533B2 (en) | 1993-09-10 |
Family
ID=11612687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP549089A Granted JPH02185935A (en) | 1989-01-12 | 1989-01-12 | Gold alloy ornaments that are colored glossy black and their coloring method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02185935A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04183836A (en) * | 1990-11-19 | 1992-06-30 | Seiko Instr Inc | Surface hardened colored gold alloy |
| JPH0717974B2 (en) * | 1990-11-28 | 1995-03-01 | 工業技術院長 | Gold alloy with shiny grey-black and black coloring and its coloring method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5852542B2 (en) * | 1978-01-27 | 1983-11-24 | セイコーエプソン株式会社 | Age hardenable gold alloy |
| JPS54132425A (en) * | 1978-04-06 | 1979-10-15 | Ishifuku Metal Ind | Gold alloy |
-
1989
- 1989-01-12 JP JP549089A patent/JPH02185935A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02185935A (en) | 1990-07-20 |
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