JP3004038B2 - Manufacturing method of metal articles - Google Patents
Manufacturing method of metal articlesInfo
- Publication number
- JP3004038B2 JP3004038B2 JP2241018A JP24101890A JP3004038B2 JP 3004038 B2 JP3004038 B2 JP 3004038B2 JP 2241018 A JP2241018 A JP 2241018A JP 24101890 A JP24101890 A JP 24101890A JP 3004038 B2 JP3004038 B2 JP 3004038B2
- Authority
- JP
- Japan
- Prior art keywords
- article
- weight
- noble metal
- manufacturing
- plastic composition
- 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 - Lifetime
Links
Landscapes
- Powder Metallurgy (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
【発明の詳細な説明】 「産業上の利用分野」 この発明は、材料として貴金属を含有した可塑性組成
物を用いた金属物品の製造方法に関するものである。Description: TECHNICAL FIELD The present invention relates to a method for producing a metal article using a plastic composition containing a noble metal as a material.
「従来の技術」 一般に、美術工芸品、装飾品などを製造するための造
形用可塑性組成物として、粘土、陶土、磁土等が知られ
ている。従来、これらの造形用可塑性組成物を所望の形
状に造形し、窯で焼いて硬化させ、必要に応じて着色剤
あるいは光沢剤を使用し、美術工芸品、装飾品等を製造
していた。"Prior art" In general, clay, porcelain clay, porcelain clay and the like are known as a plastic composition for molding for producing arts and crafts, ornaments and the like. Conventionally, these plastic compositions for molding have been molded into a desired shape, baked in a kiln, and cured, and if necessary, a coloring agent or a brightener has been used to produce arts and crafts, decorative articles, and the like.
「発明が解決しようとする課題」 しかしながら、上述の陶磁器等は、極めて壊れやす
く、機械加工も容易ではない。このため、ペンダント
等、薄型の装飾品には不向きであった。また、非熟練者
にあっては、美麗な色彩や、光沢模様を表現することが
難しく、満足な出来上がりの美術工芸品あるいは装飾品
を得ることが難しいという問題があった。"Problems to be Solved by the Invention" However, the above-mentioned ceramics and the like are extremely fragile and are not easily machined. For this reason, it was not suitable for thin decorative articles such as pendants. In addition, it is difficult for unskilled persons to express beautiful colors and glossy patterns, and it is difficult to obtain satisfactory finished arts and crafts or decorations.
この発明は上述した事情に鑑みてなされたものであ
り、美麗な色彩やガラス質層による光沢模様を有する金
属物品を、簡単な作業工程で短時間に製造することがで
きる金属物品の製造方法を提供することを目的としてい
る。The present invention has been made in view of the above-described circumstances, and provides a method of manufacturing a metal article capable of manufacturing a metal article having a beautiful color and a glossy pattern by a vitreous layer in a short time in a simple operation process. It is intended to provide.
「課題を解決するための手段」 この発明は、貴金属粉末を含有した可塑性組成物を用
いて、所望形状の形成体を造形し、この形成体の表面に
加熱することによって融解するガラス組成物を付着し、
次いで、この形成体を固相焼結することによって、前記
形成体の所望部分の表面にガラス質層が形成された金属
物品を得ることを特徴としている。"Means for Solving the Problems" The present invention uses a plastic composition containing a noble metal powder, forms a formed body having a desired shape, and heats a glass composition which is melted by heating the surface of the formed body. Adheres,
Then, the formed article is subjected to solid-phase sintering to obtain a metal article having a vitreous layer formed on a surface of a desired portion of the formed article.
「作用」 上記の構成によれば、貴金属粉末を含有した可塑性組
成物から所望形状の形成体が造形され、その形成体の所
望領域にガラス組成物が付着された後、固相焼結される
ことにより、形成体が焼結されるのと同時に、その所望
領域の表面にガラス質層が形成され、これにより、貴金
属特有の色、光沢を有すると共に、所望の部分に七宝と
同様な光沢模様を有する金属物品が得られる。According to the above-described configuration, a formed body having a desired shape is formed from the plastic composition containing the noble metal powder, and a glass composition is attached to a desired region of the formed body, and then solid-phase sintering is performed. As a result, a vitreous layer is formed on the surface of the desired area at the same time as the formed body is sintered, thereby having a color and gloss peculiar to the noble metal, and a glossy pattern similar to the enamel on a desired portion. Is obtained.
「実施例」 以下、図面を参照し、本発明の実施例を説明する。Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
まず、本実施例においては、金属物品の材料として、 貴金属粉末:50〜90重量％、 セルローズ系水溶性バインダー:0.8〜８重量％、 界面活性剤:0.03〜３重量％、 油脂:0.1〜３重量％、 を含有し、残りが水および不可避不純物からなる造形用
可塑性組成物を使用する。金属物品の製造方法の説明に
先立ち、この造形用可塑性組成物の製造手順について説
明する。First, in this embodiment, as a material of a metal article, noble metal powder: 50 to 90% by weight, a cellulose-based water-soluble binder: 0.8 to 8% by weight, a surfactant: 0.03 to 3% by weight, and a fat and oil: 0.1 to 3% % By weight, with the balance being water and unavoidable impurities. Prior to the description of the method for producing a metal article, a procedure for producing the plastic composition for molding will be described.
まず、セルローズ系水溶性バインダーと水とを混合
し、暫く放置して寒天状物質とする。次いで、この寒天
状物質に界面活性剤を添加して混合し、さらに所望の貴
金属粉末を添加して混合する。そして、この貴金属粉末
混合体に油脂を添加して混合することにより、合金金粘
土が製造される。First, a cellulose-based water-soluble binder and water are mixed and left for a while to obtain an agar-like substance. Next, a surfactant is added to and mixed with the agar-like substance, and a desired noble metal powder is further added and mixed. Then, by adding and mixing fats and oils to the precious metal powder mixture, alloy gold clay is produced.
次に造形用可塑性組成物の組成を上記のように決めた
理由を説明する。Next, the reason why the composition of the plastic composition for molding is determined as described above will be described.
（ａ）貴金属粉末 金、銀、銅、白金、およびそれらの合金等の貴金属粉
末は、造形用可塑性組成物を構成する主成分であり、製
品の色を決定する重要な要素であるが、その含有量が50
重量％未満ではその効果がなく、一方、90重量％以上を
越えて含有すると、得られた造形用可塑性組成物の伸び
および強度が低下するようになるので好ましくない。従
って、上記の通り、貴金属粉末の含有量は、50〜90重量
％とした。(A) Noble metal powder Noble metal powder such as gold, silver, copper, platinum, and their alloys is a main component constituting the plastic composition for molding and is an important factor that determines the color of a product. Content is 50
When the content is less than 90% by weight, the effect is not obtained. On the other hand, when the content is more than 90% by weight, the elongation and the strength of the obtained plastic composition for molding are disadvantageously lowered. Therefore, as described above, the content of the noble metal powder is set to 50 to 90% by weight.
また、添加する貴金属粉末の平均粒径は、200μｍを
越えると貴金属造形用可塑性組成物の伸びおよび強度が
低下することから200μｍ以下とすることが好ましい。When the average particle size of the noble metal powder to be added exceeds 200 μm, the elongation and strength of the noble metal shaping plastic composition decrease, so that it is preferably 200 μm or less.
（ｂ）セルローズ系水溶性バインダー セルローズ系水溶性バインダーは、加熱すると速やか
にゲル化して固化し、造形物の形状の保持を容易にす
る。しかし、その添加量が0.8重量％未満ではその効果
が得られず、一方、８重量％より多く添加すると粘性度
が大きくなり過ぎて造形することができなくなってしま
う。従って、上記の通り、セルローズ系水溶性バインダ
ーの含有量は、0.8〜８重量％とした。セルローズ系水
溶性バインダーとしては、メチルセルローズ、エチルセ
ルローズ等が好ましい。(B) Cellulose-based water-soluble binder The cellulose-based water-soluble binder quickly gels and solidifies when heated, and facilitates the maintenance of the shape of the molded article. However, if the amount is less than 0.8% by weight, the effect cannot be obtained. On the other hand, if the amount is more than 8% by weight, the viscosity becomes too large to make it possible to form. Therefore, as described above, the content of the cellulose-based water-soluble binder was set to 0.8 to 8% by weight. As the cellulose-based water-soluble binder, methyl cellulose, ethyl cellulose and the like are preferable.
（ｃ）界面活性剤 界面活性剤を添加して混合することにより、バインダ
ーと水との反応により生じた固形物が粉砕され、また、
貴金属粉末とバインダーとの混合性が良くなるという作
用が得られる。しかし、添加する界面活性剤の量が0.03
重量％未満ではその効果が充分でなく、一方、界面活性
剤を３重量％よりも多く添加すると、得られた貴金属造
形用可塑性組成物の粘性度が低下し、流動性が増して造
形することができなくなるので好ましくない。従って、
上記の通り、界面活性剤の添加量は0.03〜３重量％とし
た。(C) Surfactant By adding and mixing a surfactant, a solid produced by a reaction between the binder and water is pulverized,
The effect of improving the mixing property between the noble metal powder and the binder is obtained. However, if the amount of surfactant added is 0.03
If the amount is less than 3% by weight, the effect is not sufficient. On the other hand, if the amount of the surfactant is more than 3% by weight, the viscosity of the obtained noble metal forming plastic composition is reduced, and the fluidity is increased to form. Is not preferred because Therefore,
As described above, the added amount of the surfactant was 0.03 to 3% by weight.
（ｄ）油脂 油脂を少量添加することにより、造形時、貴金属造形
用可塑性組成物が手に付着しないようにすることができ
る。しかし、その添加量が0.1重量％未満ではその効果
が得られず、一方、３重量％より多く添加すると、貴金
属造形用可塑性組成物が油っぽくなり、滑りやすくなっ
て、造形時の作業性が悪くなるので好ましくない。従っ
て、上記の通り、油脂の含有量は0.1〜３重量％とし
た。油脂としては、 高級有機酸、例えば、フタル酸、 高級有機酸エステル、例えば、フタル酸−ｎ−ジオク
チル、フタル酸−ｎ−ジブチル、 高級アルコール、 高級多価アルコール、例えば、ポリビニルアルコー
ル、ポリエチレングリコール、エーテル類、 等である。(D) Fats and oils By adding a small amount of fats and oils, it is possible to prevent the noble metal modeling plastic composition from adhering to hands during modeling. However, if the amount is less than 0.1% by weight, the effect cannot be obtained. On the other hand, if the amount is more than 3% by weight, the precious metal-forming plastic composition becomes oily and slippery, and the workability at the time of molding is increased. Is not preferred because it becomes worse. Therefore, as described above, the content of fats and oils was set to 0.1 to 3% by weight. As fats and oils, higher organic acids, for example, phthalic acid, higher organic acid esters, for example, n-dioctyl phthalate, n-dibutyl phthalate, higher alcohols, higher polyhydric alcohols, for example, polyvinyl alcohol, polyethylene glycol, Ethers, and the like.
次に、第１図を参照し、この発明の一実施例による金
属物品の製造方法を説明する。本実施例は、ペンダント
等、比較的小型の装飾品を製造するのに適している。Next, a method for manufacturing a metal article according to an embodiment of the present invention will be described with reference to FIG. This embodiment is suitable for manufacturing a relatively small ornament such as a pendant.
まず、上述した方法により得られた純金粉末を含有す
る造形用可塑性組成物を作業台の上に載せ、ローラ等を
用いて平坦化し、さらに、竹べらによる加工もしくは打
ち抜き加工等によって、第１図（イ）に示すような平坦
なハート形状の形成体１を造形する。次いで、第１図
（ロ）に示すように、形成体１の表面の所望領域に粉末
ガラス２を付着させた後、第１図（ハ）に示すように、
電気炉３内に入れ、空気中において、1000℃で加熱し、
固相焼結する。この電気炉３内における焼結条件は、純
金を含有する可塑性組成物の場合、空気中において、10
00℃で加熱すればよいが、例えば、金−銀−銅を75.0wt
％,12.5wt％,12.5wt％の割合で混合した、いわゆるK18
の合金金属を含有する可塑性組成物の場合は、アルゴン
ガス中において、800℃で加熱すればよい。この焼結工
程において、粉末ガラス２が融解し、この結果、第１図
（ニ）に示すように、七宝焼きと同様な原理により表面
の所望領域にガラス質層４が形成され、目的とする金属
物品５が完成する。この金属物品５は、例えば、貴金属
製のネックレス６などに取り付け、装飾品として用いら
れる。First, the plastic molding composition containing the pure gold powder obtained by the above-described method is placed on a work table, flattened using a roller or the like, and further processed by a bamboo spatula or a punching process as shown in FIG. A flat heart-shaped formed body 1 as shown in a) is formed. Next, as shown in FIG. 1 (b), after the powdered glass 2 is adhered to a desired region on the surface of the formed body 1, as shown in FIG. 1 (c),
Put in electric furnace 3 and heat in air at 1000 ° C.
Solid phase sintering. The sintering conditions in the electric furnace 3 are as follows: in the case of a plastic composition containing pure gold,
It may be heated at 00 ° C., for example, gold-silver-copper 75.0 wt
%, 12.5wt%, 12.5wt%, so-called K18
In the case of a plastic composition containing the above alloy metal, heating may be performed at 800 ° C. in argon gas. In this sintering step, the powdered glass 2 is melted, and as a result, as shown in FIG. The metal article 5 is completed. The metal article 5 is attached to, for example, a noble metal necklace 6 or the like and used as a decorative article.
ここで、第１図（ロ）の工程において、粉末ガラス２
に着色剤を混合して形成体１に付着させれば、所望の色
に着色されたガラス質層４を形成することができ、他の
部分と色彩の異なる光沢模様を表現することができる。Here, in the step of FIG.
When a colorant is mixed and adhered to the formed body 1, the vitreous layer 4 colored in a desired color can be formed, and a glossy pattern different in color from other portions can be expressed.
なお、上述した一実施例においては、平坦なハート形
状の金属物品を製造する場合を例に説明したが、特にこ
の形状に限定されるものではなく、任意の形状としても
勿論構わない。In the above-described embodiment, the case where a flat heart-shaped metal article is manufactured has been described as an example. However, the present invention is not particularly limited to this shape, and may be an arbitrary shape.
「発明の効果」 以上説明したように、この発明によれば、可塑性組成
物の焼結工程において、ガラス組成物の融解が同時に行
なわれるので、金属特有の美麗な色彩を有すると共に、
所望の部分にガラス質層による光沢模様を有する金属物
品を、短時間に、かつ極めて簡単な作業工程で製造する
ことができ、例えば、貴金属美術工芸品、装飾品、容器
などを自作する場合や、観光地などにおいて土産用に金
属物品を多品種少量生産する場合等に用いて、特に有用
である。"Effects of the Invention" As described above, according to the present invention, in the sintering step of the plastic composition, the melting of the glass composition is performed at the same time, while having a beautiful color unique to metal,
A metal article having a glossy pattern with a vitreous layer at a desired portion can be manufactured in a short time and with a very simple work process.For example, when making a precious metal arts and crafts, a decorative article, a container, and the like, It is particularly useful when, for example, a variety of small-scale production of metal products for souvenirs is performed in a tourist spot or the like.
第１図（イ）〜（ニ）は、この発明の一実施例による金
属物品の製造方法を説明するための工程図である。 １……形成体、 ２……粉末ガラス（ガラス組成物）、 ４……ガラス質層、 ５……金属物品。1 (a) to 1 (d) are process diagrams for explaining a method for manufacturing a metal article according to one embodiment of the present invention. 1 ... formed body 2 ... powdered glass (glass composition) 4 ... vitreous layer 5 ... metal article.
フロントページの続き (56)参考文献 特開 昭50−110913（ＪＰ，Ａ) 特開 昭63−303002（ＪＰ，Ａ) 特開 昭62−142701（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B22F 7/04 C23D 5/00 Continuation of the front page (56) References JP-A-50-110913 (JP, A) JP-A-63-303002 (JP, A) JP-A-62-142701 (JP, A) (58) Fields investigated (Int) .Cl. 7 , DB name) B22F 7/04 C23D 5/00
Claims (1)
て、所望形状の形成体を造形し、この形成体の表面に加
熱されることによって融解するガラス組成物を付着し、 次いで、この形成体を固相焼結することによって、前記
形成体の所望部分の表面にガラス質層が形成された金属
物品を得ることを特徴とする金属物品の製造方法。1. A molded article having a desired shape is formed using a plastic composition containing a noble metal powder, and a glass composition which is melted by being heated by heating is attached to the surface of the molded article. A method for manufacturing a metal article, comprising obtaining a metal article having a vitreous layer formed on a surface of a desired portion of the formed body by solid-phase sintering the formed body.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2241018A JP3004038B2 (en) | 1990-09-11 | 1990-09-11 | Manufacturing method of metal articles |
| AU77097/91A AU638832B2 (en) | 1990-05-18 | 1991-05-15 | Precious metal article, method for manufacturing same, moldable mixture for use in manufacture of same and method for producing moldable mixture |
| EP91108050A EP0457350B1 (en) | 1990-05-18 | 1991-05-17 | Precious metal article, method for manufacturing same, moldable mixture for use in manufacture of same and method for producing moldable mixture |
| DE69113859T DE69113859T2 (en) | 1990-05-18 | 1991-05-17 | Precious metal moldings, process for their preparation, moldable mixture for their preparation and method for producing this moldable mixture. |
| AT91108050T ATE129130T1 (en) | 1990-05-18 | 1991-05-17 | PRECIOUS METAL MOLDED BODY, METHOD FOR THE PRODUCTION THEREOF, MOLDABLE MIXTURE FOR THE PRODUCTION THEREOF AND METHOD FOR PRODUCING THIS MOLDABLE MIXTURE. |
| CA002042845A CA2042845C (en) | 1990-05-18 | 1991-05-17 | Precious metal article, method for manufacturing same, moldable mixture for use in manufacture of same and method for producing moldable mixture |
| KR1019910008117A KR0179371B1 (en) | 1990-05-18 | 1991-05-18 | Precious metal products, methods for producing precious metals, molded mixtures used for the production of precious metals, and methods for producing molded mixtures |
| US07/978,507 US5328775A (en) | 1990-05-18 | 1992-11-18 | Moldable mixture for use in the manufacturing of precious metal articles |
| US08/231,101 US5376328A (en) | 1990-05-18 | 1994-04-22 | Precious metal article, method for manufacturing same, moldable mixture for use in manufacture of same and method for producing moldable mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2241018A JP3004038B2 (en) | 1990-09-11 | 1990-09-11 | Manufacturing method of metal articles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04120205A JPH04120205A (en) | 1992-04-21 |
| JP3004038B2 true JP3004038B2 (en) | 2000-01-31 |
Family
ID=17068112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2241018A Expired - Lifetime JP3004038B2 (en) | 1990-05-18 | 1990-09-11 | Manufacturing method of metal articles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3004038B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3062732B2 (en) * | 1997-03-28 | 2000-07-12 | セイコーインスツルメンツ株式会社 | Electrolytic processing method and electrolytic processing apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4841124A (en) * | 1971-09-29 | 1973-06-16 | ||
| JPS50110913A (en) * | 1974-02-12 | 1975-09-01 | ||
| JPS59143001A (en) * | 1983-02-03 | 1984-08-16 | Furukawa Electric Co Ltd:The | Metallic blank material for industrial art |
| JPH0637642B2 (en) * | 1987-05-30 | 1994-05-18 | 株式会社東伸精工 | Metal materials for arts and crafts that can be easily engraved or cut, and a method for manufacturing a sintered product using the metal material |
-
1990
- 1990-09-11 JP JP2241018A patent/JP3004038B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04120205A (en) | 1992-04-21 |
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