JPH0770670A - Gold ornament material hardened by alloying with small amount of component - Google Patents

Abstract

PURPOSE:To provide a gold ornament material having high hardness while maintaining aesthetic value comparable to the golden color tone and high-grade appearance of pure gold. CONSTITUTION:One or more kinds of rare earth elements including Y are incorporated into pure gold of >=99% purity by 200-2,000ppm basing on the total amt. or one or more among Mg, Al, Si, Mn, Fe, Co, Ni, Cu, Pd, Ag, In, Sn, Sb, Pb and Bi are further incorporated by 200-2,0O0ppm to harden the pure gold. The objective gold ornament material is made of the resulting hard gold whose Vickers hardness is >=100.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、擦り傷や引掻き傷の
つきにくいビッカース硬さ（Ｈｖ）で１００以上の高い
硬さを有し、かつ経時的にも、ろう付けなどの加熱後も
前記高硬度を保持する金装飾品材に関するものである。FIELD OF THE INVENTION The present invention has a Vickers hardness (Hv) of 100 or more which is hard to be scratched or scratched, and has a high Vickers hardness even after a lapse of time or after heating such as brazing. The present invention relates to a gold ornament material that retains hardness.

【０００２】[0002]

【従来の技術】従来、一般にネックチェーンやブロー
チ、あるいは指環などの装飾品の製造に、９９％以上の
純度を有する純金に、ＡｇやＣｕ、さらにＮｉ，Ｐｄ、
およびＺｎなどの合金成分を２５〜４０重量％程度含有
させてＫ１４合金やＫ１８合金などとして、その硬さを
Ｈｖ：１００以上に高めたＡｕ合金が広く用いられてい
る。2. Description of the Related Art Conventionally, pure gold having a purity of 99% or higher, Ag, Cu, Ni, Pd,
Au alloys having a hardness of Hv: 100 or more are widely used as K14 alloys and K18 alloys by containing alloy components such as Zn and Zn in an amount of 25 to 40% by weight.

【０００３】[0003]

【発明が解決しようとする課題】一方、上記の装飾品は
純金で構成されるのが色調および高級感から理想とされ
ているが、純金は、インゴット状態でＨｖ：３２程度、
加工ワイヤーでＨｖ：８０程度の硬さしかなく、その上
加工硬化しても、その硬さが時間経過と共に低下するば
かりでなく、ろう付けなどの加熱によっても硬さ低下が
さけられず、このように純金装飾品は常に軟質状態にあ
ることから、傷がつき易く、高い美的価値の長期に亘る
維持はきわめて困難であり、したがって、その適用は著
しく狭い範囲に限られてしまうのが現状である。On the other hand, it is ideal that the above-mentioned ornaments are made of pure gold in terms of color tone and luxury, but pure gold has an Hv of about 32 in an ingot state.
The processed wire has a hardness of about Hv: 80, and even if it is processed and hardened, the hardness not only decreases with the passage of time, but also the hardness cannot be reduced by heating such as brazing. As such, since pure gold ornaments are always in a soft state, they are easily scratched, and it is extremely difficult to maintain a high aesthetic value for a long period of time, and therefore their application is limited to a remarkably narrow range. is there.

【０００４】[0004]

【課題を解決するための手段】そこで、本発明者等は、
上述のような観点から、純金装飾品のもつ上記の高い美
的価値を失うことなく、これに高硬度を付与すべく研究
を行なった結果、９９％以上の純度を有する純金に、合
金成分として、全体に占める割合で、Ｙを含む希土類元
素のうちの１種または２種以上：２００〜２０００ppm
、を含有させると、硬さがＨｖ：１００以上に向上
し、かつこの高硬度は経時的にも、ろう付けなどの加熱
後も保持され、しかも上記合金成分の含有量が少量なの
で、純金のもつ色調および高級感がそのまま維持され、
したがってこの結果の硬質金で構成された金装飾品は、
純金装飾品と同等の高い美的価値を長期に亘って維持す
るようになり、さらに合金成分として、同じく全体に占
める割合で、Ｍｇ，Ａｌ，Ｓｉ，Ｍｎ，Ｆｅ，Ｃｏ，Ｎ
ｉ，Ｃｕ，Ｐｄ，Ａｇ，Ｉｎ，Ｓｎ，Ｓｂ，Ｐｂ、およ
びＢｉのうちの１種または２種以上：１０〜５００ppm
、を含有させると、強度が向上するようになるという
研究結果を得たのである。Therefore, the present inventors have
From the above viewpoint, as a result of conducting research to impart high hardness to the pure gold ornaments without losing the above high aesthetic value, pure gold having a purity of 99% or more, as an alloy component, 1 or 2 or more of rare earth elements including Y: 200 to 2000 ppm in proportion to the whole
, The hardness is improved to Hv: 100 or more, and this high hardness is maintained over time and after heating such as brazing, and since the content of the above alloy components is small, The original color tone and high quality are maintained,
Therefore, the resulting gold ornament made of hard gold is
The same high aesthetic value as pure gold ornaments can be maintained for a long period of time, and as an alloying component, Mg, Al, Si, Mn, Fe, Co, N are also contained in the same proportion.
One or more of i, Cu, Pd, Ag, In, Sn, Sb, Pb, and Bi: 10 to 500 ppm
We obtained the research result that the strength is improved by the inclusion of and.

【０００５】この発明は、上記の研究結果にもとづいて
なされたものであって、９９％以上の純度を有する純金
に、全体に占める割合で、Ｙを含む希土類元素（以下、
これらを総称して硬さ向上成分という）のうちの１種ま
たは２種以上：２００〜２０００ppm 、を含有させ、さ
らに必要に応じて、Ｍｇ，Ａｌ，Ｓｉ，Ｍｎ，Ｆｅ，Ｃ
ｏ，Ｎｉ，Ｃｕ，Ｐｄ，Ａｇ，Ｉｎ，Ｓｎ，Ｓｂ，Ｐ
ｂ、およびＢｉ（以下、これらを総称して強度向上成分
という）のうちの１種または２種以上：１０〜５００pp
m 、を含有させて硬質化してなる硬質金で構成した金装
飾品材に特徴を有するものである。The present invention has been made based on the above research results, and is a rare earth element (hereinafter, referred to as a rare earth element) containing Y in pure gold having a purity of 99% or more in a total proportion.
(Collectively referred to as hardness-improving components), one or more of them are included: 200 to 2000 ppm, and, if necessary, Mg, Al, Si, Mn, Fe, C
o, Ni, Cu, Pd, Ag, In, Sn, Sb, P
One or more of b and Bi (hereinafter collectively referred to as a strength improving component): 10 to 500 pp
The feature is a gold ornament material made of hard gold that is hardened by containing m.

【０００６】なお、この発明の金装飾品材において、純
金の純度を９９％以上としたのは、その純度が９９％未
満になると、純金のもつ黄金色の色調が損なわれ、高級
感が失われるようになるという理由によるものである。
また、硬さ向上成分および強度向上成分の含有量がそれ
ぞれ２００ppm 未満および１０ppm 未満では、所望の効
果、すなわち硬さ向上成分では、硬さをＨｖ：１００以
上に高めると共に、高められた硬さの経時的低下と加熱
による低下を抑制する作用が得られず、そして強度向上
成分では所望の強度向上効果が得られず、一方その含有
量がそれぞれ２０００ppm および５００ppm を越える
と、色調および高級感が損なわれ、美的価値が低下する
ようになることから、その含有量をそれぞれ２００〜２
０００ppm および１０〜５００ppm と定めた。In the gold decorative material of the present invention, the purity of pure gold is set to 99% or more. When the purity is less than 99%, the golden color tone of pure gold is impaired and the high-grade feeling is lost. The reason is that they will be exposed.
When the contents of the hardness improving component and the strength improving component are less than 200 ppm and less than 10 ppm, respectively, the desired effect, that is, the hardness improving component increases the hardness to Hv: 100 or more, and The effect of suppressing the decrease with time and the decrease due to heating cannot be obtained, and the desired strength improving effect cannot be obtained with the strength improving component. On the other hand, when the contents thereof exceed 2000 ppm and 500 ppm, respectively, the color tone and high-grade feeling are impaired. Therefore, the aesthetic value will decrease, so the content of each will be 200-2.
000ppm and 10-500ppm are defined.

【０００７】[0007]

【実施例】つぎに、この発明の金装飾品材を実施例によ
り具体的に説明する。通常の真空溶解炉にて、それぞれ
表１〜４に示される純度の純金を溶解し、これに同じく
表１〜４に示される含有量で合金成分をそれぞれ含有さ
せ、ついで直径：２０mm×長さ：１００mmの寸法をもっ
た円柱状インゴットに鋳造し、インゴットの端部より試
片を切り出して硬さ（マイクロビッカース硬さ、荷重：
１００gr）を測定した後、面削して単頭伸線機に送り、
ここで２０パスの伸線加工を繰り返し施して、直径：
０．５mmのワイヤーに加工することにより本発明金装飾
品材１〜４５、および合金成分の含有を行なわない以外
は同一の条件で純金装飾品材をそれぞれ製造した。EXAMPLES Next, the gold decorative article material of the present invention will be specifically described by way of examples. In a normal vacuum melting furnace, pure gold having a purity shown in Tables 1 to 4 is melted, and alloy components are contained in the same amounts as shown in Tables 1 to 4, and then diameter: 20 mm x length. : Casting into a cylindrical ingot having a dimension of 100 mm, cutting a sample from the end of the ingot, and hardness (micro Vickers hardness, load:
100 gr), then chamfered and sent to a single-head wire drawing machine,
Here, 20 passes of wire drawing are repeatedly performed to obtain a diameter:
Pure gold ornamental materials were produced under the same conditions except that the gold ornamental materials 1-45 of the present invention and the alloy components were not processed by processing into a wire of 0.5 mm.

【０００８】ついで、この結果得られた各種の装飾品材
について、伸線加工直後および６ヶ月経過後の硬さ（マ
イクロビッカース硬さ、荷重：１００gr）を測定し、さ
らに伸線加工直後の装飾品材に対して、通常のろう付け
条件、すなわちろう材として、例えば融点：３７０℃の
Ａｕ：３重量％Ｓｉ合金ろう材や、融点：３５０℃のＡ
ｕ−１２％Ｇｅ合金ろう材などを用い温度：４５０℃に
３０分間保持後冷却のろう付け条件に相当する条件で加
熱処理を行なった状態で同じく同一の条件で硬さを測定
した。また強度を評価する目的で伸線加工直後の引張強
さを測定した。これらの測定結果を表５〜７に示した。Then, the hardness (micro Vickers hardness, load: 100 gr) of the various decorative materials obtained as a result was measured immediately after wire drawing and after 6 months, and the decoration immediately after wire drawing was performed. With respect to the product material, as usual brazing condition, that is, as a brazing material, for example, melting point: 370 ° C. Au: 3 wt% Si alloy brazing material, melting point: 350 ° C. A
Using a u-12% Ge alloy brazing material or the like, the hardness was measured under the same conditions in which the temperature was maintained at 450 ° C. for 30 minutes and the heat treatment was performed under the conditions corresponding to the cooling brazing conditions. Further, the tensile strength immediately after wire drawing was measured for the purpose of evaluating the strength. The results of these measurements are shown in Tables 5-7.

【０００９】[0009]

【表１】 [Table 1]

【００１０】[0010]

【表２】 [Table 2]

【００１１】[0011]

【表３】 [Table 3]

【００１２】[0012]

【表４】 [Table 4]

【００１３】[0013]

【表５】 [Table 5]

【００１４】[0014]

【表６】 [Table 6]

【００１５】[0015]

【表７】 [Table 7]

【００１６】[0016]

【発明の効果】表１〜７に示される結果から、本発明金
装飾品材１〜４５は、いずれも経時的にも、また加熱に
よっても変らぬＨｖ：１００以上の高硬度を有し、硬さ
がＨｖ：１００以下で、経時的硬さ低下および加熱によ
る硬さ低下が著しい純金装飾品材に比して著しくすぐれ
た硬さ安定性をもち、かつ強度向上成分の含有によって
高強度が得られることが明らかである。上述のように、
この発明の金装飾品材は、傷のつきにくいＨｖ：１００
以上の高硬度を有し、かつこの高硬度は経時的にも加熱
にも安定で、常にＨｖ：１００以上を維持し、さらに合
金成分の含有量も少量なので、純金のもつすぐれた美的
価値と同等の美的価値を有し、かつ前記高硬度を具する
ことと相まって、長期に亘って前記美的価値が維持され
るなど有用な特性を有するのである。From the results shown in Tables 1 to 7, the gold decorative material materials 1 to 45 of the present invention have a high hardness of Hv: 100 or more which does not change with time or by heating. The hardness is Hv: 100 or less, and the hardness stability is remarkably superior to that of a pure gold decorative material material in which the hardness decreases with time and the hardness decreases remarkably due to heating. It is clear that it can be obtained. As mentioned above,
The gold decorative material of this invention is Hv: 100 which is hard to be scratched.
It has the above-mentioned high hardness, and this high hardness is stable over time and heating, always maintains Hv: 100 or more, and since the content of alloying components is small, it has the excellent aesthetic value of pure gold. In addition to having the same aesthetic value and having the high hardness, it has useful properties such as maintaining the aesthetic value for a long period of time.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 ９９％以上の純度を有する純金に、全体
に占める割合で、 Ｙを含む希土類元素のうちの１種または２種以上：２０
０〜２０００ppm 、を含有させて硬質化してなる硬質金
で構成したことを特徴とする金装飾品材。1. Pure gold having a purity of 99% or more, in a proportion of the whole, one kind or two or more kinds of rare earth elements including Y: 20
A gold ornament material characterized by being made of hard gold that is hardened by containing 0 to 2000 ppm. 【請求項２】 ９９％以上の純度を有する純金に、全体
に占める割合で、 Ｙを含む希土類元素のうちの１種または２種以上：２０
０〜２０００ppm 、 Ｍｇ，Ａｌ，Ｓｉ，Ｍｎ，Ｆｅ，Ｃｏ，Ｎｉ，Ｃｕ，Ｐ
ｄ，Ａｇ，Ｉｎ，Ｓｎ，Ｓｂ，Ｐｂ、およびＢｉのうち
の１種または２種以上：１０〜５００ppm 、を含有させ
て硬質化してなる硬質金で構成したことを特徴とする金
装飾品材。2. Pure gold having a purity of 99% or more, in a proportion of the whole, one or more rare earth elements containing Y: 20
0-2000ppm, Mg, Al, Si, Mn, Fe, Co, Ni, Cu, P
One or more of d, Ag, In, Sn, Sb, Pb and Bi: 10 to 500 ppm, and hardened by containing hard gold. .