JP4556243B2 - Manufacturing method of silver clay sintered body with engraved surface and silver clay shaped body - Google Patents

Manufacturing method of silver clay sintered body with engraved surface and silver clay shaped body Download PDF

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JP4556243B2
JP4556243B2 JP2006008200A JP2006008200A JP4556243B2 JP 4556243 B2 JP4556243 B2 JP 4556243B2 JP 2006008200 A JP2006008200 A JP 2006008200A JP 2006008200 A JP2006008200 A JP 2006008200A JP 4556243 B2 JP4556243 B2 JP 4556243B2
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silver
silver clay
clay
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健 阿曽
寿一 平沢
康夫 井戸
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Mitsubishi Materials Corp
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この発明は、表面に彫刻を施した銀粘土焼結体の製造方法に関するものであり、さらにこの発明は表面に彫刻を施した銀粘土焼結体を製造するために使用する表面に黒または薄黒い色調の硫化銀膜を形成した彫刻を施し易い銀粘土造形体に関するものである。   The present invention relates to a method for producing a silver clay sintered body having a surface engraved, and the present invention further relates to a method for producing a silver clay sintered body having a surface engraved. The present invention relates to a silver clay shaped body that can be easily engraved with a black-colored silver sulfide film.

近年、通常の粘土細工と同じように自由に造形を行うことができる銀粉末を含んだ銀粘土が市販されており、この銀粘土を用いて表面に彫刻を施した指輪、腕輪、ペンダント、置物などの銀粘土焼結体からなる宝飾品や美術工芸品を個人的に製造している。銀粘土焼結体からなる宝飾品や美術工芸品を製造するには、銀粘土を所定の形状に成形して銀粘土造形体を作製し、この銀粘土造形体を乾燥して固化したのち銀粘土造形体の表面に彫刻を施し、この表面に彫刻を施した銀粘土造形体を焼結して所定の形状を有し彫刻が施された銀粘土焼結体からなる宝飾品または美術工芸品を製造している。   In recent years, silver clay containing silver powder that can be shaped freely like ordinary clay work has been marketed, and rings, bracelets, pendants, figurines that have been engraved on the surface using this silver clay Jewelery and arts and crafts made of silver clay sintered bodies are manufactured personally. To produce jewelry and arts and crafts made of sintered silver clay, silver clay is molded into a predetermined shape to produce a silver clay model, and then the silver clay model is dried and solidified. Jewelery or arts and crafts made of a silver clay sintered body that has a predetermined shape by engraving the surface of the clay modeled body and sintering the silver clay modeled body. Is manufacturing.

例えば、図５の側面図に示されるように、腕輪の側面に誕生日または作製年月日を彫刻した銀粘土焼結体からなる腕輪１を作製するには、銀粘土を造形して得られた図３の側面図に示されるようなリング状の銀粘土造形体２を作製し、この銀粘土造形体２を乾燥したのち図４に示されるように銀粘土造形体２の側面に誕生日または作製年月日を彫刻し、この彫刻した銀粘土造形体２を焼結炉で焼結することにより誕生日または作製年月日を彫刻した銀粘土焼結体からなる図５の側面図に示される腕輪１を作製していた。   For example, as shown in the side view of FIG. 5, in order to produce the bracelet 1 made of a sintered silver clay with the birthday or production date engraved on the side of the bracelet, it is obtained by shaping silver clay. A ring-shaped silver clay shaped body 2 as shown in the side view of FIG. 3 is prepared, and after the silver clay shaped body 2 is dried, the birthday is shown on the side of the silver clay shaped body 2 as shown in FIG. Alternatively, the production date is engraved, and the engraved silver clay shaped body 2 is sintered in a sintering furnace to sinter the birth date or production date in the side view of FIG. The bracelet 1 shown was made.

銀粘土として、純度：９９．９９質量％以上の高純度からなる平均粒径：３〜２０μｍの銀粉末：５０〜９５質量％、セルローズ系水溶性バインダー：０．８〜８質量％、油脂：０．１〜３質量％、界面活性剤：０．０３〜３質量％を含有し、残りが水からなるものであることは知られているが（特許文献１参照）、前記銀粉末の粒度を調整した平均粒径：２μｍ以下のＡｇ微細粉末：１５〜５０質量％を含有し、残部が平均粒径：２μｍを越え１００μｍ以下のＡｇ粉末からなる混合粉末で構成された銀粉末を、
銀粉末：５０〜９５質量％、有機系バインダ−：０．８〜８質量％を含有し、残りが水、
銀粉末：５０〜９５質量％、有機系バインダー：０．８〜８質量％、界面活性剤：０．０３〜３質量％を含有し、残りが水、
銀粉末：５０〜９５質量％、有機系バインダー：０．８〜８質量％、油脂：０．１〜３質量％を含有し、残りが水、
銀粉末：５０〜９５質量％、有機系バインダー：０．８〜８質量％、油脂：０．１〜３質量％、界面活性剤：０．０３〜３質量％を含有し、残りが水、からなる組成となるように配合した銀粘土が提供されており、これら銀粘土はいずれも低温焼結性に優れ、固形燃料で焼結ができるとされている（特許文献２参照）。
特開平４−２６７０７号公報 特開２００２−２４１８０２号公報 As silver clay, purity: average particle diameter consisting of high purity of 99.99% by mass or more: 3-20 μm silver powder: 50-95% by mass, cellulose water-soluble binder: 0.8-8% by mass, fats and oils: It is known that 0.1 to 3% by mass, surfactant: 0.03 to 3% by mass, and the remainder is made of water (see Patent Document 1), but the particle size of the silver powder A silver powder composed of a mixed powder composed of Ag powder having an average particle size of 2 μm or less and containing 15 to 50% by mass of Ag powder, the balance being an average particle size of over 2 μm and 100 μm or less,
Silver powder: 50 to 95% by mass, organic binder: 0.8 to 8% by mass, the rest being water,
Silver powder: 50 to 95% by mass, organic binder: 0.8 to 8% by mass, surfactant: 0.03 to 3% by mass, the balance being water,
Silver powder: 50 to 95% by mass, organic binder: 0.8 to 8% by mass, fat / oil: 0.1 to 3% by mass, the rest being water,
Silver powder: 50 to 95% by mass, organic binder: 0.8 to 8% by mass, fat / oil: 0.1 to 3% by mass, surfactant: 0.03 to 3% by mass, the rest being water, Silver clay blended so as to have a composition consisting of the above is provided, and these silver clays are all excellent in low-temperature sinterability and can be sintered with solid fuel (see Patent Document 2).
JP-A-4-26707 Japanese Patent Laid-Open No. 2002-241802

しかし、従来の方法で銀粘土造形体２の表面に彫刻を施すと、彫刻を施した部分と銀粘土造形体２とが同じ色彩を呈しているので、図４に示されるように、彫刻を施した部分３と施さない部分との色調の相違が見られないところから、どのような彫刻を施したのか明確に認識することが難しく、特に細い線の彫刻を銀粘土造形体に施しても彫刻した部分と彫刻しない部分との判別をすることは容易ではない。   However, when the surface of the silver clay model 2 is engraved by the conventional method, the engraved part and the silver clay model 2 exhibit the same color, so that the engraving is performed as shown in FIG. It is difficult to clearly recognize what kind of sculpture has been given because there is no difference in color tone between the part 3 that has been given and the part that has not been given. It is not easy to discriminate between engraved parts and unengraved parts.

また、彫刻した部分と彫刻しない部分との識別が認識できないと正確な模様または文字が彫刻された銀粘土焼結体からなる宝飾品または美術工芸品を得ることができない。   Further, if the distinction between the engraved part and the non-engraved part cannot be recognized, it is not possible to obtain jewelry or arts and crafts made of a silver clay sintered body engraved with an accurate pattern or character.

そこで、本発明者らは、銀粘土造形体の表面にいかなる模様または文字を彫刻したかがはっきりと分かるようにすべく研究を行った結果、市販の銀粘土を造形して得られた図３に示される銀粘土造形体２を硫化処理することにより表面に黒または薄黒い色調の硫化銀膜を形成した図１の側面図に示される銀粘土造形体４を作製し、この表面に黒または薄黒い色調の硫化銀膜を形成した銀粘土造形体４に彫刻を施すと、図２に示されるように、彫刻を施した部分３は銀粘土造形体自体の白色が現れ、彫刻を施さない部分は硫化銀膜は黒または薄黒い色調を呈しているところから、彫刻を施した部分３と施さない部分との色調のコントラストが明確となり、彫刻を施し易くなると共に一層正確な彫刻を施すことが容易になる、という知見を得たのである。   Therefore, the present inventors conducted research to clearly understand what pattern or character was engraved on the surface of the silver clay modeled body, and as a result, FIG. 3 was obtained by modeling a commercially available silver clay. The silver clay model 2 shown in FIG. 1 is formed by sulfiding the silver clay model 2 shown in FIG. 1 to form a silver sulfide film 4 having a black or dark color tone on the surface. When engraving on the silver clay model 4 having a dark-colored silver sulfide film, as shown in FIG. 2, the engraved part 3 shows the white color of the silver clay model itself and is not engraved. Since the silver sulfide film has a black or light black color tone, the color tone contrast between the engraved portion 3 and the non-engraved portion is clear, making engraving easier and more accurate engraving I got the knowledge that A.

この発明は、かかる知見にもとづいてなされたものであって、
（１）銀粘土を造形して銀粘土造形体を作製し、得られた銀粘土造形体を硫化処理して表面に硫化銀膜を有する銀粘土造形体を作製し、この表面に硫化銀膜を有する銀粘土造形体に彫刻を施したのち焼結する表面に彫刻が施された銀粘土焼結体の製造方法、
（２）表面に硫化銀膜が形成されている前記（１）記載の銀粘土焼結体の製造方法に用いられる銀粘土造形体、に特徴を有するものである。 This invention was made based on such knowledge,
(1) Silver clay is modeled to produce a silver clay model, and the resulting silver clay model is sulfidized to produce a silver clay model having a silver sulfide film on the surface. A method for producing a silver clay sintered body having a sculptured surface that is sintered after engraving a silver clay shaped body having
(2) A silver clay shaped body used in the method for producing a silver clay sintered body according to (1), wherein a silver sulfide film is formed on the surface.

この発明の表面に硫化銀膜が形成されている銀粘土造形体４は、図３に示される通常の銀粘土造形体２を硫酸ナトリウム水溶液に浸漬することにより形成することができるが、その他の方法で硫化処理することにより成形することもできる。この硫化銀膜が形成されている銀粘土造形体に彫刻を施したのち、焼結すると、銀粘土造形体表面に形成されている硫化銀膜は還元されて銀となり、表面が銀色の銀粘土焼結体を作製することができる。   The silver clay shaped body 4 having a silver sulfide film formed on the surface of the present invention can be formed by immersing the ordinary silver clay shaped body 2 shown in FIG. 3 in an aqueous sodium sulfate solution. It can also be formed by sulfiding by the method. After engraving the silver clay shaped body on which this silver sulfide film is formed, when sintered, the silver sulfide film formed on the surface of the silver clay shaped body is reduced to silver and the surface is silvery silver clay A sintered body can be produced.

上述のように、この発明の銀粘土焼結体の製造方法によると、一層繊細な模様または文字を正確に彫刻した銀粘土焼結体からなる宝飾品または美術工芸品を簡単に作ることができるなど優れた効果を奏するものである。   As described above, according to the method for producing a silver clay sintered body of the present invention, jewelry or art crafts made of a silver clay sintered body accurately engraved with a more delicate pattern or character can be easily produced. And so on.

実施例１
市販の銀粘土を造形して図３に示される銀粘土造形体からなるリングを作製し、このリングを乾燥し固化させたのち、この固化した銀粘土造形体を１．０％Ｎａ２ＳＯ４水溶液中に浸漬することにより、図１に示されるように固化した銀粘土造形体の表面に硫化銀膜を形成した硫化銀膜被覆銀粘土造形体を作製した。この硫化銀膜被覆銀粘土造形体に図２に示されるように彫刻を施したところ、彫刻を施した部分が銀粘土造形体の銀色を呈し、一方、彫刻を施さない部分は黒色を呈しており、彫刻を施した部分が鮮明になった。 Example 1
A commercially available silver clay is modeled to produce a ring made of the silver clay modeled body shown in FIG. 3, and this ring is dried and solidified. Then, the solidified silver clay modeled body is treated with 1.0% Na 2 SO 4. By immersing in an aqueous solution, a silver sulfide film-covered silver clay model in which a silver sulfide film was formed on the surface of the solidified silver clay model as shown in FIG. 1 was produced. When this silver sulfide film-coated silver clay shaped body is engraved as shown in FIG. 2, the engraved portion exhibits the silver color of the silver clay shaped body, while the unengraved portion exhibits black color. The engraved part became clear.

従来例１
実施例１で用意した市販の銀粘土を造形して図３に示される銀粘土造形体からなるリングを作製し、このリングを乾燥し固化させたのち、この固化した銀粘土造形体の表面に図４に示されるように彫刻を施したところ、彫刻を施した部分および施さない部分が共に銀粘土造形体固有の白色を呈しているのでコントラストが鮮明でなく、彫刻を施した部分と施さない部分との区別が不鮮明にであった。 Conventional Example 1
The commercially available silver clay prepared in Example 1 is shaped to produce a ring made of the silver clay shaped body shown in FIG. 3, and after the ring is dried and solidified, the surface of the solidified silver clay shaped body is formed. When engraved as shown in FIG. 4, the engraved part and the non-engraved part both show the white color unique to the silver clay model, so the contrast is not clear and the engraved part is not applied. The distinction from the part was unclear.

この発明の硫化処理を施した銀粘土造形体の側面図である。It is a side view of the silver clay modeling body which performed the sulfurating process of this invention. この発明の硫化処理を施した銀粘土造形体に彫刻を施した状態を示す側面図である。It is a side view which shows the state which engraved the silver clay modeling body which performed the sulfuration process of this invention. 従来の銀粘土造形体の側面図である。It is a side view of the conventional silver clay modeling body. 従来の銀粘土造形体に彫刻を施した状態を示す側面図である。It is a side view which shows the state which engraved the conventional silver clay modeling body. 銀粘土造形体を焼結して得られた焼結体の側面図である。It is a side view of the sintered compact obtained by sintering a silver clay modeling body.

符号の説明Explanation of symbols

１：銀粘土焼結体、２：従来の銀粘土造形体、３：彫刻を施した部分、４：この発明の銀粘土造形体 1: Silver clay sintered body, 2: Conventional silver clay shaped body, 3: Engraved part, 4: Silver clay shaped body of the present invention

Claims (2)

銀粘土を造形して銀粘土造形体を作製し、得られた銀粘土造形体を硫化処理して表面に硫化銀膜を有する銀粘土造形体を作製し、この表面に硫化銀膜を有する銀粘土造形体に彫刻を施したのち焼結することを特徴とする表面に彫刻が施された銀粘土焼結体の製造方法。 Silver clay is shaped to produce a silver clay shaped body, and the resulting silver clay shaped body is sulfidized to produce a silver clay shaped body having a silver sulfide film on the surface. Silver having a silver sulfide film on the surface A method for producing a silver clay sintered body having a surface engraved, wherein the clay shaped body is sintered after being engraved. 表面に硫化銀膜が形成されていることを特徴とする請求項１記載の銀粘土焼結体の製造方法に用いられる銀粘土造形体。 The silver clay modeling body used for the manufacturing method of the silver clay sintered compact of Claim 1 with which the silver sulfide film | membrane is formed in the surface.
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JP2000063186A (en) * 1998-06-12 2000-02-29 Kumiko Okazaki Fusion of silver and/or gold to ceramic
JP2001309808A (en) * 2000-04-28 2001-11-06 Aida Kagaku Kogyo Kk Decorating method of silver sintered body

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000063186A (en) * 1998-06-12 2000-02-29 Kumiko Okazaki Fusion of silver and/or gold to ceramic
JP2001309808A (en) * 2000-04-28 2001-11-06 Aida Kagaku Kogyo Kk Decorating method of silver sintered body

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