JP3190771B2 - Pt material for precision casting ornaments - Google Patents
Pt material for precision casting ornamentsInfo
- Publication number
- JP3190771B2 JP3190771B2 JP20728093A JP20728093A JP3190771B2 JP 3190771 B2 JP3190771 B2 JP 3190771B2 JP 20728093 A JP20728093 A JP 20728093A JP 20728093 A JP20728093 A JP 20728093A JP 3190771 B2 JP3190771 B2 JP 3190771B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- precision
- precision casting
- casting
- quality
- 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、指輪、ブローチ等の精
密鋳造装飾品用のＰｔ素材特に高品位Ｐｔ素材に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Pt material for precision casting decorative articles such as rings and brooches, and particularly to a high-quality Pt material.
【０００２】[0002]
【従来の技術】装飾品には、精密な形状を可能とする精
密鋳造（キャスト）法が広く用いられている。最近は特
に高品位のＰｔのニーズが多いが、純Ｐｔは精密鋳造す
る際の鋳造性特に湯流れが悪く、特に精密な形状によっ
てはうまく出来難いという課題があった。また、鋳造時
にピンホール、巣等が出来易い問題があった。2. Description of the Related Art For decorative articles, a precision casting method capable of forming a precise shape is widely used. Recently, there has been a lot of demand for high-quality Pt, but pure Pt has a problem that castability at the time of precision casting, particularly the flow of molten metal, is poor, and it is difficult to perform well depending on a particularly precise shape. Further, there is a problem that pinholes and nests are easily formed during casting.
【０００３】[0003]
【発明が解決しようとする課題】本発明は高品位Ｐｔで
あって、精密鋳造で鋳造性に優れ精密な形状を得ること
のできるＰｔ素材を提供するものである。SUMMARY OF THE INVENTION The present invention is to provide a Pt raw material which is high-quality Pt and which has excellent castability and can obtain a precise shape by precision casting.
【０００４】[0004]
【課題を解決するための手段】本発明の精密鋳造装飾品
用Ｐｔ素材は、Ｓｍが0.01重量％〜１重量％、残部Ｐｔ
であることを特徴とする。The Pt material for precision cast decorative articles of the present invention has a Sm content of 0.01% by weight to 1% by weight and a balance of Pt.
It is characterized by being.
【０００５】[0005]
【作用】上記のように構成された本発明の精密鋳造装飾
品用Ｐｔ素材によれば、Ｓｍが0.01〜１重量％、残部Ｐ
ｔであることから高品位Ｐｔとなると共に添加元素によ
る脱酸作用から湯流れが改善されて鋳造が容易、良好で
精密形状が可能となり、ピンホール、巣等の欠陥もない
ものである。ここで0.01重量％未満だと精密鋳造性改善
の効果がなく、１重量％を越えるとＰｔの高品位及び特
性を損なうものである。また、残部Ｐｔであることから
Ｐｔの高品位が維持できるものである。なお、99.0重量
％未満だと高品位が確保し難く、99.99重量％を越える
と鋳造性改善効果がないものである。また、本発明の精
密鋳造装飾品用Ｐｔ素材による鋳造品は、機械的強度特
に硬さが改善されるもので、疵がつき難く、変形し難い
ものである。また、精密鋳造後の細部の加工、切削性も
容易で良好で、研磨性にも優れ、研磨し易く、研磨後の
光沢も良好で、高品位Ｐｔ特有の色、ツヤを発揮できる
ものである。特に機械的強度が強いことから立爪リング
の台座素材として有効である。According to the Pt material for precision cast decorative articles of the present invention constituted as described above, Sm is 0.01 to 1% by weight, and the balance is P.
Since t is high, high quality Pt is obtained, and the flow of molten metal is improved by the deoxidizing action of the added element, so that casting is easy, good and precise shape is possible, and there are no defects such as pinholes and nests. Here, if it is less than 0.01% by weight, there is no effect of improving the precision castability, and if it exceeds 1% by weight, the high quality and properties of Pt are impaired. Further, since the remaining portion is Pt, high quality of Pt can be maintained. If the content is less than 99.0% by weight, it is difficult to secure high quality, and if it exceeds 99.99% by weight, there is no effect of improving castability. Further, the cast product of the Pt material for precision cast decorative products of the present invention has improved mechanical strength, particularly hardness, and is hard to be scratched and deformed. In addition, it is easy and good in detail processing and machinability after precision casting, excellent in abrasion, easy to polish, good in gloss after polishing, and can exhibit a color and gloss peculiar to high-grade Pt. . In particular, since the mechanical strength is strong, it is effective as a base material for a standing claw ring.
【０００６】[0006]
【実施例】以下に実施例と従来例について述べる。ま
ず、実施例としてＰｔにＳｍを４重量％含有した材料を
母合金として、高周波真空溶解炉にて溶解鋳造して所定
の含有量0.01重量％、 0.2重量％、１重量％の組成と
し、次いで圧延加工にて６mm角の精密鋳造品用Ｐｔ素材
とした。また、従来例として純度99.9％の純Ｐｔ（Ｔ
ｉ、Ｚｒ、Ｈｆ、希土類元素を含まない）を溶解、鋳
造、圧延加工にて６mm角の精密鋳造品用Ｐｔ素材とし
た。然して、上記実施例、従来例の精密鋳造品用Ｐｔ素
材を用い精密鋳造法にて指輪に成型、その後研摩、切削
して指輪とした。その結果、従来例においては一部形状
の欠け、寸法規格外があったのに対し、実施例において
は形状、寸法の良好なものであった。また、仕上げ外観
品質検査の結果、実施例の色合い、ツヤ共良好なもので
あった。さらに、機械的強度についても良好であること
が確認された。特に含有量0.2重量％について硬さを調
べた結果、従来例においてはＨｖ45〜50であったのに対
して、表１に示すようにＨｖ73と硬く良好なものであっ
た。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment and a conventional example will be described below. First, as an example, a material containing 4% by weight of Sm in Pt was used as a mother alloy and melt-cast in a high-frequency vacuum melting furnace to obtain a predetermined content of 0.01% by weight, 0.2% by weight, and 1% by weight. A 6 mm square Pt material for precision castings was obtained by rolling. As a conventional example, pure Pt (T
i, Zr, Hf, and rare earth elements) were melted, cast and rolled to obtain a 6 mm square Pt material for precision castings. However, using the Pt material for precision castings of the above example and the conventional example, a ring was formed by precision casting, and then polished and cut into a ring. As a result, in the conventional example, some of the shapes were missing or out of dimensional specifications, whereas in the examples, the shapes and dimensions were good. In addition, as a result of the finished appearance quality inspection, both the color tone and the gloss of the example were excellent. Furthermore, it was confirmed that the mechanical strength was good. In particular, as a result of examining the hardness with respect to the content of 0.2% by weight, the Hv was 45 to 50 in the conventional example, but as shown in Table 1, the hardness was Hv 73 , which was good.
【０００７】[0007]
【表１】 [Table 1]
【０００８】[0008]
【発明の効果】以上のように本発明の精密鋳造装飾品用
Ｐｔ素材によれば、Ｓｍが0.01〜１重量％、残部Ｐｔで
あることから、高品位Ｐｔの鋳造が容易、良好で精密鋳
造法により精密形状を得ることができるという優れた効
果を有するものである。また硬さが硬いので、疵がつき
難い、変形し難い鋳造品が得られるという優れた効果を
有するものである。また、鋳造後の切削性、研磨性にも
優れており、加工し易く、高品位Ｐｔ特有の色、ツヤを
有した鋳造品が得られるものである。As described above, according to the Pt material for precision-cast decorative articles of the present invention, since Sm is 0.01 to 1% by weight and the balance is Pt, casting of high-quality Pt is easy, good and precise casting. It has an excellent effect that a precise shape can be obtained by the method. Further, since the hardness is high, it has an excellent effect of obtaining a cast product which is hardly flawed and hardly deformed. Further, it is excellent in the cutting property and polishing property after casting, is easy to process, and can provide a cast product having a color and luster peculiar to high-grade Pt.
───────────────────────────────────────────────────── フロントページの続き 審査官 小川 武 (56)参考文献 特開 平７−41885（ＪＰ，Ａ) 特開 平７−41886（ＪＰ，Ａ) 特開 昭51−139521（ＪＰ，Ａ) 特開 昭63−213669（ＪＰ，Ａ) 特開 平３−188231（ＪＰ，Ａ) 岡田、後藤”白金族と工業的利用" Ｐ．165，222，393 産業と書株式会社 昭和31年12月20日発行 (58)調査した分野(Int.Cl.7，ＤＢ名) C22C 5/04 A44C 27/00 ──────────────────────────────────────────────────続 き Continued on the front page Examiner Takeshi Ogawa (56) Reference JP-A-7-41885 (JP, A) JP-A-7-41886 (JP, A) JP-A-51-139521 (JP, A) JP-A-63-213669 (JP, A) JP-A-3-188231 (JP, A) Okada, Goto "Platinum family and industrial use" 165, 222, 393 Sangyo Tosho Co., Ltd. Published on December 20, 1956 (58) Fields investigated (Int. Cl. 7 , DB name) C22C 5/04 A44C 27/00
Claims (1)
であることを特徴とする精密鋳造装飾品用Ｐｔ素材。1. Sm is 0.01% by weight to 1% by weight, the balance Pt
A Pt material for precision casting decorative articles, characterized in that:
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20728093A JP3190771B2 (en) | 1993-07-29 | 1993-07-29 | Pt material for precision casting ornaments |
| US08/281,352 US5518691A (en) | 1993-07-29 | 1994-07-27 | Precious metal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20728093A JP3190771B2 (en) | 1993-07-29 | 1993-07-29 | Pt material for precision casting ornaments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0741884A JPH0741884A (en) | 1995-02-10 |
| JP3190771B2 true JP3190771B2 (en) | 2001-07-23 |
Family
ID=16537186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20728093A Expired - Fee Related JP3190771B2 (en) | 1993-07-29 | 1993-07-29 | Pt material for precision casting ornaments |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3190771B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103320640B (en) * | 2013-07-11 | 2015-11-25 | 云南大学 | Platinum alloy material and preparation method |
-
1993
- 1993-07-29 JP JP20728093A patent/JP3190771B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 岡田、後藤"白金族と工業的利用"Ｐ．１６５，２２２，３９３ 産業と書株式会社 昭和３１年１２月２０日発行 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0741884A (en) | 1995-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |