JP2832564B2 - How to make precious metal jewelry - Google Patents
How to make precious metal jewelryInfo
- Publication number
- JP2832564B2 JP2832564B2 JP4069351A JP6935192A JP2832564B2 JP 2832564 B2 JP2832564 B2 JP 2832564B2 JP 4069351 A JP4069351 A JP 4069351A JP 6935192 A JP6935192 A JP 6935192A JP 2832564 B2 JP2832564 B2 JP 2832564B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- alloy
- molten metal
- jewelry
- pouring
- 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 - Fee Related
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、複数の色彩・色調を有
する貴金属宝飾品の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing jewelry of precious metal having a plurality of colors and tones.
【０００２】[0002]
【従来の技術】一般に鋳造は、単一の合金を鋳型に注湯
して目的の材料の成形を達成するものである。貴金属宝
飾品の製造方法の主体的加工法は、上記した鋳造のなか
でもロストワックス法により行われ、宝飾はデザインに
よって盛衰するので自由度の大きいこの方法が極めて有
効な方法として用いられている。近年の貴金属宝飾品に
おいては、そのデザインの多種化と共に色彩の多種化が
進む傾向にある。その色彩については貴金属が有する固
有色に加え、卑金属を配合させた合金が有する赤色、緑
色、ブルー、ブラック、バイオレット、パープル等があ
る。そして、上記した種々の色彩・色調を有する合金を
夫々に部分品として鋳造し、その後に溶接等して一体化
することにより、貴金属宝飾品を作製している。2. Description of the Related Art In general, casting involves pouring a single alloy into a mold to achieve a desired material. The predominant metal jewelry manufacturing method is mainly performed by the lost wax method among the castings described above, and jewelry is used as an extremely effective method because it has a high degree of freedom because jewelry is prosperous and depressed depending on the design. 2. Description of the Related Art In precious metal jewelry in recent years, there has been a tendency for diversification of colors along with diversification of designs. The colors include red, green, blue, black, violet, purple, etc., which are contained in the alloy containing the base metal, in addition to the intrinsic color of the noble metal. Precious metal jewelry items are manufactured by casting alloys having the above-mentioned various colors and tones as individual parts, and then integrating them by welding or the like.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、各種色
彩・色調の部品（または本体）を溶接、或いはロー付け
することは、部品が小さければ小さいほど面倒であっ
た。また、接着する部品の物性（特に融点、膨張、収
縮）の違いから、これを溶接によって組立てるには極め
て工数がかかるばかりでなく、加工ができない場合も出
現していた。However, it is more troublesome to weld or braze parts (or main bodies) of various colors / tones as the parts become smaller. Also, due to differences in physical properties (particularly melting point, expansion, shrinkage) of parts to be bonded, assembling these parts by welding not only requires a great deal of man-hours, but also some cases cannot be processed.
【０００４】[0004]
【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、ロストワックス法において、鋳型容量に
満たない量の白金合金の溶湯を注湯して鋳型空洞内に不
規則に付着させた後、続いて鋳型容量の残部を充填する
量の金合金の溶湯を注湯するようにしたことを特徴とす
る貴金属宝飾品の製造方法に関するものである。DISCLOSURE OF THE INVENTION The present invention has been proposed in view of the above. In the lost wax method, a molten amount of a platinum alloy less than the volume of a mold is poured into the mold cavity to prevent the molten metal from entering the mold cavity.
The present invention relates to a method for manufacturing precious metal jewelry, characterized in that, after being adhered to a rule, a molten amount of a gold alloy is poured in an amount to fill the remainder of the mold volume.
【０００５】上記したように本発明は一つの鋳型内に複
数の合金を連続的に注湯する以外は全く通常のロストワ
ックス法と変わらない。本発明の製造方法においては、
まず白金合金を鋳込むが、この白金合金は通常白金（Ｐ
ｔ）にパラジウム（Ｐｄ）などを混合したものであり、
極めて酸化されにくい性質を有する。次に、金合金を鋳
込むが、前記したように卑金属を混合することにより種
々の色調・色彩を有するものが提案されているので、デ
ザイン的に選ばれた色調・色彩の金合金を適宜に選択・
使用すれば良い。上記した金合金の溶湯は、通常のロス
トワックス法における注湯を全く同様に行うものであ
り、鋳型容量よりも過剰な量の溶湯を湯口に供給し、巣
やひけの発生を防ぐようにする。本発明は、上記したよ
うに極めて簡単に複数の色彩を有する貴金属宝飾品を製
造することができる。[0005] As described above, the present invention is no different from the ordinary lost wax method except that a plurality of alloys are continuously poured into one mold. In the production method of the present invention,
First, a platinum alloy is cast. This platinum alloy is usually made of platinum (P
t) mixed with palladium (Pd) or the like,
It is extremely resistant to oxidation. Next, a gold alloy is cast.As described above, various colors and colors are proposed by mixing the base metals, so that a gold alloy having a color tone and a color selected in design is appropriately added. Choice·
Just use it. The molten metal of the above-mentioned gold alloy is the one in which pouring in the usual lost wax method is performed in exactly the same manner, and an excessive amount of molten metal is supplied to the spout in excess of the mold volume so as to prevent the occurrence of nests and sink marks. . According to the present invention, as described above, precious metal jewelry having a plurality of colors can be manufactured very easily.
【０００６】しかし、本発明に反して、白金合金と金合
金との注湯順序を変更すると、目的の宝飾品を得ること
ができない。即ち、白金合金の融点は約１７００℃であ
るからその溶湯は約１９５０℃程度に設定される。一
方、金合金の融点は約９００℃であるから、先に金合金
を鋳込んだ場合にはその後に白金合金を鋳込んだ際に接
触面から次々と融解されてしまうので、白金合金と金合
金とが混じり合った部分が形成されてしまう。一方、組
成・配合が異なるために色調・色彩も異なる二種の金合
金の溶湯を一つの鋳型に連続的に注湯する場合も上記と
同様であり、先に鋳込んだ金合金は後に鋳込む金合金と
融点や比熱が極めて近いために、後の金合金を鋳込んだ
際に溶融して第三の金合金を形成してしまう。また、仮
に融点の差が大きな金合金を選定して上記した問題点を
解消したとしても、金合金は卑金属を配合しているため
に酸化され易く、その表面が選択・酸化されてしまうの
で、後に注湯する合金との接着強度が十分でない。さら
に、非酸化雰囲気下（窒素やアルゴンガス等の雰囲気
下）において鋳造を行うことにより上記した問題点を解
消したとしても、先に注湯する金合金は鋳型容量に対し
て十分な量ではないので巣が入るなどの鋳造不良が起こ
る。[0006] However, contrary to the present invention, if the order of pouring the platinum alloy and the gold alloy is changed, the desired jewelry cannot be obtained. That is, since the melting point of the platinum alloy is about 1700 ° C., the molten metal is set at about 1950 ° C. On the other hand, since the melting point of the gold alloy is about 900 ° C., if the gold alloy is cast first, the platinum alloy is subsequently melted from the contact surface when the platinum alloy is cast. A part mixed with the alloy is formed. On the other hand, the same applies to the case where molten metal of two kinds of gold alloys having different colors and colors due to different compositions and blends is continuously poured into one mold, and the gold alloy cast earlier is cast later. Since the melting point and specific heat of the gold alloy to be inserted are extremely close to each other, the third gold alloy is formed by melting when the subsequent gold alloy is cast. Also, even if the above-mentioned problems are solved by selecting a gold alloy having a large difference in melting point, the gold alloy is easily oxidized because the base metal is blended, and its surface is selected and oxidized. The bonding strength with the alloy to be poured later is not sufficient. Furthermore, even if the above-mentioned problems are solved by performing casting in a non-oxidizing atmosphere (under an atmosphere of nitrogen, argon gas, or the like), the gold alloy to be poured first is not sufficient in volume of the mold. Therefore, casting defects such as nests may occur.
【０００７】これに対して、本発明のように初めに白金
合金を鋳込んだ場合、白金合金は融点が極めて高いので
後から注湯する金合金の溶湯により融解することもな
い。しかも、白金合金は極めて酸化雰囲気下においても
酸化されにくいので後から注湯する金合金との接着（融
着）強度が極めて高いものとなる。さらに、白金合金の
溶湯は巣が入りにくいものと知られているので鋳造不良
も起こりにくいものとなる。On the other hand, when a platinum alloy is initially cast as in the present invention, the platinum alloy has an extremely high melting point, so that it is not melted by a molten gold alloy which is poured later. In addition, since the platinum alloy is hardly oxidized even in an oxidizing atmosphere, the bonding (fusion) strength with a gold alloy to be poured later is extremely high. Furthermore, since the molten metal of the platinum alloy is known to be less likely to nest, poor casting is less likely to occur.
【０００８】したがって、本発明は溶接やロー付け等の
後処理を行うことなく、二種の合金が一体的に融着した
宝飾品を作製することができる。Therefore, the present invention can produce a jewelry in which the two alloys are fused together without performing post-processing such as welding or brazing.
【０００９】また、本発明はデザインの造形に利用する
こともできる。元来、宝飾品としては幾何学的な形状の
ものよりも木の葉や枯れ枝等をモチーフとした特殊な形
状のものが好まれる傾向にある。そして、このような特
殊な形状の宝飾品を製造するには当然ロストワックスに
おける鋳型空洞も特殊な形状となる。このような特殊な
形状の鋳型空洞に対して鋳型容量に満たない量の白金合
金の溶湯を溶湯の注湯速度や注湯量、或いは湯口の位置
等を変化させることにより鋳型空洞内に不規則に付着す
るように注湯すると、鋳型空洞内で飛び散ったり、或い
は下方へ流下したりし、その際、溶湯は鋳型に接触した
部分から凝固するので、極めてランダムな位置に凝固す
ることとなる。その後、第二の合金の溶湯を注湯するこ
とにより所定の形状の宝飾品が作製されるが、そのデザ
インは極めて複雑な模様形状となる。そして、溶湯の鋳
型空洞内への付着状態は溶湯の注湯速度や注湯量、或い
は湯口の位置等により種々に不規則に異なることとな
る。したがって、言い換えれば、溶湯の注湯速度や注湯
量、或いは湯口の位置等の注湯条件を変化させることに
より、溶湯の鋳型空洞内への不規則な付着状態、即ち模
様形状の異なる宝飾品を簡単に作製することができるの
である。詳しく説明すると、溶湯の注湯速度を速くした
場合、白金合金の溶湯は飛散率が高くなり、鋳型内の空
洞内壁に微細な斑点状に付着し易いものとなり、速すぎ
る場合には斑点が小さすぎて美観的に好まれない外観と
なることもある。また、注湯速度を遅くした場合、白金
合金の溶湯は飛散率が低くなり、一部は飛散して斑点状
に付着するものの、大部分は塊状にまとまり易くなり、
遅すぎる場合には全く飛散しないこともある。一方、注
湯量を変化させると、勿論製品における白金合金の割合
が変化するが、この注湯量は溶湯の飛散状況にも影響を
及ぼす。さらに、鋳型内の空洞に対する湯口の位置を変
化（適宜に設定）させても、溶湯の飛散状況、即ち鋳型
内の空洞内壁への溶湯の付着状態が変化する。尚、この
白金合金溶湯の鋳型内の空洞内壁への付着状態が変化す
るということは、製品における表面の模様形状が変化す
ることである。したがって、本発明は、模様形状の異な
る宝飾品を簡単に作製することができるという格別の効
果を奏する。[0009] The present invention can also be used for design modeling. Originally, as jewelry, there is a tendency to prefer a special shape with a motif of a leaf or a dead branch to a geometric shape. In order to manufacture jewelry having such a special shape, the mold cavity of the lost wax naturally has a special shape. For such specially shaped mold cavities, the amount of molten platinum alloy less than the mold volume is irregularly introduced into the mold cavity by changing the pouring speed and pouring amount of the molten metal, or the position of the gate. Attach
When the molten metal is poured in such a manner, the molten metal scatters or flows downward in the cavity of the mold. At that time, the molten metal solidifies from a portion in contact with the mold, so that it is solidified at a very random position. Thereafter, a jewelry having a predetermined shape is produced by pouring a molten metal of the second alloy, but the design has an extremely complicated pattern shape. The state of adhesion of the molten metal into the mold cavity varies irregularly depending on the pouring speed and pouring amount of the molten metal, the position of the gate, and the like. Therefore, in other words, by changing the pouring conditions such as the pouring speed and pouring amount of the molten metal, or the position of the pouring gate, the state of irregular attachment of the molten metal into the mold cavity, that is, jewelry having a different pattern shape can be obtained. It can be easily manufactured. More specifically, when the pouring speed of the molten metal is increased, the molten metal of the platinum alloy has a high scattering rate, and tends to adhere to the inner wall of the cavity in the form of fine spots. The appearance may be too aesthetically unfavorable. In addition, when the pouring speed is reduced, the molten metal of the platinum alloy has a low scattering rate, and although a part is scattered and adheres in a spot-like manner, most of the molten metal is easily aggregated in a lump,
If it is too late, it may not fly at all. On the other hand, if the pouring amount is changed, of course, the ratio of the platinum alloy in the product changes, but this pouring amount also affects the scattering state of the molten metal. Further, even if the position of the sprue with respect to the cavity in the mold is changed (set appropriately), the scattering state of the molten metal, that is, the state of adhesion of the molten metal to the inner wall of the cavity in the mold changes. A change in the state of adhesion of the molten platinum alloy to the inner wall of the cavity in the mold means a change in the pattern of the surface of the product. Therefore, the present invention has a special effect that jewelry items having different patterns can be easily manufactured.
【００１０】[0010]
【実施例】以下に本発明の実施例を示す。 実施例１ １鋳型中に、蝋型と斜方向に２つの湯口の位置を設定し
た１５ｇのブローチを含む鋳型を形成し、白金合金（ｐ
ｔ９０Ｐｄ１０，１７１０℃）１０ｇを注湯速度２０ｇ
／秒で鋳込んで凝固後、直ちに金合金（Ａｕ７５Ｃｕ
２５，８９０℃）を鋳込むと、両者は共に溶着し、白金
合金が斑点状に点在する赤銅色の枯れ枝状ブローチを得
た。したがって、白色合金の溶湯は、前記注湯条件で斑
点状に飛散して鋳型空洞内壁に付着したことが容易に推
察された。Examples of the present invention will be described below. Example 1 In one mold, a mold including a wax mold and a broach of 15 g in which two gate positions were set obliquely was formed, and a platinum alloy (p
t 90 Pd 10 , 1710 ° C.) 10 g at a pouring speed of 20 g
/ Sec after casting and solidification, immediately after the gold alloy (Au 75 Cu
25 , 890 ° C.), the two were welded together to obtain a bronze-colored dead-branch broach in which platinum alloy was spotted. Therefore, it was easily presumed that the molten white alloy scattered in spots under the above-described pouring conditions and adhered to the inner wall of the mold cavity.
【００１１】実施例２ １鋳型中に蝋型の中心部に直角となる位置に２つの湯口
を設定した１５ｇのブローチを含む鋳型を形成し、白金
合金（ｐｔ９０Ｐｄ１０）８ｇを注湯速度８０ｇ／秒で
鋳込いんで凝固後、直ちに金合金（Ａｕ７５Ａｇ２５）
を連続鋳造し、白金合金が斑点状に点在する青色系金合
金の木ノ葉型ブローチを得た。したがって、白色合金の
溶湯は、前記注湯条件で斑点状に飛散して鋳型空洞内壁
に付着したことが容易に推察された。Example 2 A mold containing a 15 g broach having two gates set at a position perpendicular to the center of the wax mold in one mold was formed, and 8 g of a platinum alloy (pt 90 Pd 10 ) was poured. Immediately after casting at 80 g / sec and solidifying, a gold alloy (Au 75 Ag 25 )
Was continuously cast to obtain a woody leaf type brooch of a blue-based gold alloy in which a platinum alloy was scattered in spots. Therefore, it was easily presumed that the molten white alloy scattered in spots under the above-described pouring conditions and adhered to the inner wall of the mold cavity.
【００１２】[0012]
【００１３】[0013]
【発明の効果】以上説明したように、本発明は溶接等の
後工程を全く行うことなく、しかも鋳造不良等を起こす
ことなく複数の色彩・色調を有する宝飾品を極めて簡単
に作製することができる。また、本発明により宝飾品
は、二種の合金が融着して接着強度が極めて高い。さら
に、本発明は、特殊な形状の鋳型に対し、溶湯の注湯速
度や注湯量、或いは湯口の位置などを変更することによ
り、複雑な模様形状を種々に作製することができるの
で、デザインの造形にも利用することができる。As described above, according to the present invention, jewelry having a plurality of colors and tones can be produced very easily without performing any post-process such as welding and without causing casting defects. it can. Further, in the jewelry according to the present invention, two kinds of alloys are fused to each other, and the bonding strength is extremely high. Furthermore, the present invention can produce a variety of complex patterns by changing the pouring speed and pouring amount of the molten metal, or the position of the gate, for a specially shaped mold. It can also be used for modeling.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−25276（ＪＰ，Ａ) 特開 昭49−49830（ＪＰ，Ａ) 特開 平３−136604（ＪＰ，Ａ) 特公 昭52−2694（ＪＰ，Ｂ２) 特公 昭63−13787（ＪＰ，Ｂ２) 特公 平３−80002（ＪＰ，Ｂ２) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-25276 (JP, A) JP-A-49-49830 (JP, A) JP-A-3-136604 (JP, A) 2694 (JP, B2) JP-B-63-13787 (JP, B2) JP-B 3-80002 (JP, B2)
Claims (1)
満たない量の白金合金の溶湯を注湯して鋳型表面に不規
則に付着させた後、続いて鋳型容量の残部を充填する量
の金合金の溶湯を注湯するようにしたことを特徴とする
貴金属宝飾品の製造方法。In the lost wax method, a molten amount of a platinum alloy less than the capacity of a mold is poured to irregularly fill a mold surface.
A method for producing jewelry of precious metals, characterized in that, after being adhered to the law, molten metal of gold alloy is poured in an amount to fill the remainder of the mold volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4069351A JP2832564B2 (en) | 1992-02-20 | 1992-02-20 | How to make precious metal jewelry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4069351A JP2832564B2 (en) | 1992-02-20 | 1992-02-20 | How to make precious metal jewelry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05228609A JPH05228609A (en) | 1993-09-07 |
| JP2832564B2 true JP2832564B2 (en) | 1998-12-09 |
Family
ID=13400055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4069351A Expired - Fee Related JP2832564B2 (en) | 1992-02-20 | 1992-02-20 | How to make precious metal jewelry |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2832564B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101695742B (en) * | 2009-09-27 | 2013-03-20 | 湖州鼎盛机械制造有限公司 | Method for producing engine gear case |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4949830A (en) * | 1972-09-16 | 1974-05-15 | ||
| JPS5092824A (en) * | 1973-12-20 | 1975-07-24 | ||
| JPS5339854B2 (en) * | 1974-02-15 | 1978-10-24 | ||
| JPS5725276A (en) * | 1980-07-21 | 1982-02-10 | Nissan Motor Co Ltd | Method for casting of press die |
| JP2559629B2 (en) * | 1989-08-23 | 1996-12-04 | 富士ロビン株式会社 | Air operation system of fumarolic soil conditioner |
| JPH0686000B2 (en) * | 1989-10-23 | 1994-11-02 | 株式会社ダイアート三枝 | Casting method for precious metal jewelry |
-
1992
- 1992-02-20 JP JP4069351A patent/JP2832564B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101695742B (en) * | 2009-09-27 | 2013-03-20 | 湖州鼎盛机械制造有限公司 | Method for producing engine gear case |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05228609A (en) | 1993-09-07 |
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