JP3291556B2 - Method for producing decorative article having the same surface condition as decorative article made of precious metal clay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a decorative article having the same surface condition as a decorative article made of precious metal clay or a part of the decorative article.

[0002]

2. Description of the Related Art Noble metal clay is obtained by adding an organic binder, a surfactant and the like to a noble metal powder to form a clay, and is already commercially available. This precious metal clay is
Individuals can freely mold at room temperature, and the resulting molded body of precious metal clay is fired in a heating furnace to form a fired body, and the surface of this fired body can be polished to make a precious metal decorative article. it can. The noble metal ornaments obtained in this manner are simple and freely produced by the individual, and therefore are simple, warm and have a surface characteristic of a fired body.

However, since decorative articles made of such precious metal clay are basically fired bodies of precious metal powder, they have lower strength than decorative articles made by casting, and are made of precious metal clay. The thin and thin part of the thin or thin ornament or part of the ornament has weak strength. Therefore, for example, in order to produce a pendant with a noble metal clay, as shown in FIG. 8, a noble metal clay is molded into a predetermined shape to produce a molded body 8 of a precious metal clay pendant body, and a molding of the precious metal clay pendant body is performed. FIG. 9 shows a part (hereinafter referred to as a punched ring bar 1 ′) composed of a ring portion 2 ′ and a bar portion 3 ′ obtained by punching a precious metal rolled plate or bending one end of a precious metal wire into the body 8. The pendant is made by stabbing and firing.
The punching ring rod 1 'used at this time has sufficient strength from the point of punching a rolled precious metal plate or bending one end of a drawn precious metal wire.

[0004]

The pendant produced by this conventional method has a natural silver shine when the pendant body is made of precious metal clay, for example, when the pendant body is made of pure silver clay. A ring rod made by punching a precious metal rolled plate or bending one end of a noble metal wire, for example, a ring bar made by punching a pure silver rolled plate or bending one end of a pure silver drawn wire while having a handmade simplicity and warmth The stick has a smooth and strong glossy surface, feels cold due to mechanical manufacturing, and feels uncomfortable due to the surface state of the pendant body and the ring part, resulting in a dissonant pendant. The pendant body and the ring part can be made of precious metal clay in one piece to eliminate the discomfort caused by the difference in surface condition between the pendant body and the ring part, but the ring part made of precious metal clay has low strength, There is a problem that the ring part is damaged when the body is worn through the necklace through the hole of the part and the pendant body may be dropped.

[0005]

Means for Solving the Problems Accordingly, the present inventors have
From this point of view, research was conducted to produce a decorative product such as a pendant made of a cast body or a pendant made of a partially cast body having the same or similar surface state to that of a pendant made of precious metal clay. As a result, (a) As shown in FIG. 6, a ring rod 11 having the same or similar surface state as the fired body of the precious metal clay pendant molded body is cast on the molded body 8 of the precious metal clay pendant main body by casting. When the produced and obtained cast body ring rod 11 is stabbed into the molded body 8 of the noble metal clay pendant main body and fired, the obtained pendant becomes the pendant body of the dried or fired precious metal clay body and the ring part of the cast body. The skin of the noble metal looks like a pendant made of noble metal clay without any discomfort, (b) firing of the pendant body of the noble metal clay Casting ring rod 11 having the same or also similar surface state which the body
Manufactures a ring rod composed of a dried or fired precious metal clay, a ring rod composed of a dried paper clay, or a ring rod composed of a dried clay as shown in FIG. It is possible to make a lost wax mold by making a mold with a wax mold and casting a molten precious metal. (C) The same or similar surface condition as the fired body of the precious metal clay pendant body A pendant made of a cast body having excellent strength having a pendant made of a precious metal clay dried body or a fired body is produced, the pendant is molded with an impression agent, a wax mold is made to produce a lost wax mold,
It can be made by casting molten precious metal,
The knowledge was obtained.

The present invention has been made on the basis of this finding. (1) Forming a noble metal clay, and drying or firing the obtained shaped body to produce a dried or fired noble metal clay, The precious metal clay dried body or fired body is used as a prototype and pressed between two impression materials.After that, the prototype made of the precious metal clay dried body or the fired body is taken out to obtain an impression material mold having a cavity having the same shape as the prototype. The wax mold is produced by pouring and solidifying molten wax into the cavity of the impression material mold to produce a wax mold, take out the obtained wax mold, and make a lost wax mold by the lost wax method using the wax mold, The present invention is characterized by a method of manufacturing a decorative article having the same surface condition as a decorative article made of a noble metal clay in which a noble metal melt is cast into a lost wax mold.

When a pendant is manufactured by the method (1), a pendant made of a casting having the same surface condition as a decorative product made of precious metal clay can be manufactured. Can be produced by casting, and other portions can be produced by a dried or fired precious metal clay.

Accordingly, the present invention provides: (2) a precious metal clay is molded to produce a ring rod molded body including a ring portion and a rod portion, and the ring rod molded body is dried or fired to dry or fire the precious metal clay. A ring rod made of a precious metal clay is prepared, and the ring rod made of the precious metal clay dried body or the fired body is sandwiched between two impression materials as a prototype and pressed.Then, the prototype made of the dried precious metal clay or the fired body is taken out. An impression material mold having a cavity having the same shape as that of the original mold is produced, a molten wax is poured into the cavity of the impression material mold and solidified to produce a wax mold, and the obtained wax mold is taken out. A lost wax mold is prepared by the lost wax method, and a molten precious metal is cast into the lost wax mold to form a dried or fired precious metal clay. A ring rod casting having the same surface state as the pendant body is produced, the ring rod casting is stabbed into a pendant body molded with a noble metal clay, and a ring having the same surface state as the pendant made of the noble metal clay to be fired. A method of manufacturing a pendant decorative article having a portion, (3) a paper clay is formed to form a ring rod molded body including a ring portion and a rod portion, and the ring rod molded body is dried to obtain a dried paper clay ring rod. After making and pressing the paper clay dried body ring rod as a prototype between two impression materials, an impression material mold having a cavity having the same shape as the prototype is produced by taking out the prototype produced from the dried paper clay body. And
A molten wax is poured into a cavity of the impression material mold to solidify to form a wax mold, the obtained wax mold is taken out, and a lost wax mold is manufactured by the lost wax method using the wax mold, and a lost wax mold is manufactured. A ring rod casting having the same surface condition as a dried ring rod made of paper clay is produced by casting a precious metal melt into the mold, and the ring rod casting is stabbed into a molded body of a pendant body molded with noble metal clay. A method of manufacturing a pendant decorative article having a ring portion having the same surface state as a pendant made of a noble metal clay to be fired; (4) molding a clay to produce a ring-shaped molded body composed of a ring portion and a rod portion; The molded clay body is dried to produce a clay dried body ring rod, and the clay dried body ring rod is pressed as a prototype between two impression materials and then pressed with the clay dried body. An impression material mold having a cavity having the same shape as that of the prototype is produced by taking out the produced prototype, and a wax mold is produced by pouring molten wax into the cavity of the impression material mold and solidifying, thereby obtaining a wax mold. A ring rod casting having the same surface condition as a dried ring ring rod made of clay by casting a noble metal melt into the lost wax mold by preparing a lost wax mold by the lost wax method using the wax mold. The method for producing a pendant decorative article having a ring portion having the same surface state as a pendant made of a noble metal clay to be manufactured and stabbed into the molded body of a pendant body made of the noble metal clay by sintering the ring rod cast body with the noble metal clay. It has.

In order to prepare a lost wax mold by a lost wax method using a wax mold, a slurry layer is formed on the surface of the wax mold by immersing the slurry in a slurry composed of zirconium oxide powder and colloidal silica and then pulling it up. By forming a stucco layer by spraying silica sand on the surface of the layer to form a ceramic layer on the surface of the wax mold having the same shape as the inner space of the crucible, repeating the operation of forming this ceramic layer a plurality of times, The wax mold is melted away to make a lost wax mold.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Commercially available pure silver clay is molded to form an inner diameter of 10 mm and an outer diameter of 12 m.
m, thickness: 1 mm ring part and length:
A molded body of a ring rod having a rod portion having a size of 20 mm is prepared and fired to form a ring rod 1 made of a pure silver clay fired body having a ring portion 2 and a rod portion 3 as shown in FIG. Was prepared. As shown in FIG. 2, the ring rod 1 composed of the pure silver clay fired body is sandwiched between two impression materials 4 and 4 and pressed as shown in FIG. 3 and then shown in FIG. Like two impression materials 4, 4
An impression material mold 5 having a cavity having the same shape as that of the prototype was produced by dividing and removing the prototype. As shown in FIG. 5, a molten wax 7 was poured into the cavity 6 of the impression material mold 5 and solidified to form a wax mold.
The obtained wax mold was taken out, and the wax mold was averaged in particle diameter: 30 μm
It is immersed in a slurry composed of the following zirconium oxide powder and colloidal silica, pulled up from the slurry to form a slurry layer on the surface of a wax mold, and spraying silica sand having a maximum particle size of 100 mesh on the surface of the slurry layer to form a stucco. A ceramic layer is formed on the surface of a wax mold by forming a layer to form a lost wax mold, and a molten metal is cast into the lost wax mold to have the same surface state as a ring rod of a precious metal clay fired body. 6 was prepared.

As shown in FIG. 6, a molded body 8 of a pendant body formed by molding this ring rod cast body 11 with a noble metal clay.
When this was baked at 900 ° C., as shown in FIG. 7, a pendant in which the ring portion was a cast body and the main body was a pure silver clay fired body could be produced. The pendant obtained in this way appeared to be composed entirely of a fired pure silver clay body even though the ring portion was a cast body, and there was no discomfort in the appearance of the ring portion and the pendant body at all. .

Conventional Example A commercially available pure silver thin plate having a thickness of 1 mm is punched to produce a punched ring rod 1 ′ including a ring portion 8 and a rod portion 9, which is molded from a noble metal clay as shown in FIG. 8. Into the molded body 12 of the pendant body,
When baked at ° C., as shown in FIG. 9, a pendant in which the ring portion was a punched body and the main body was a baked pure silver clay body could be produced. The pendant obtained in this way has a strong luster in the ring part and the coldness due to mechanical production is felt, while the main body exhibits the natural silver shine unique to pure silver clay products and the handmade simplicity and warmth There was a sense of discomfort due to the surface condition of the pendant body and the ring part drifting.

[0013]

As described above, according to the present invention, it is possible to manufacture a decorative article composed of a cast body having the same surface condition as that of a fired body of precious metal clay, which has excellent industrial effects. In addition, in this example, a ring rod cast having the same surface state as the ring rod of the noble metal clay fired body was manufactured using the ring rod composed of the pure silver clay fired body as a prototype, Instead, a ring rod casting was made using the dried precious metal clay, dried paper clay or dried clay as a prototype, and a pendant whose main body was made of a pure silver clay fired body was made using this ring rod casting. It looked as if it were composed of a pure silver clay fired body, there was no unnatural feeling in the appearance of the ring portion and the pendant body, and the same effect as the example using the pure silver clay fired body as a prototype was obtained.

[Brief description of the drawings]

FIG. 1 shows a precious metal clay dried or fired ring rod used as a prototype used in the present invention.

FIG. 2 is an explanatory cross-sectional view showing a state in which a dried or fired noble metal clay ring bar is used as a prototype and sandwiched between two impression materials.

FIG. 3 is an explanatory cross-sectional view showing a state in which a dried or fired noble metal clay ring bar is used as a prototype and sandwiched and pressed between two impression materials.

FIG. 4 is an explanatory cross-sectional view showing a state in which two impression materials are separated and a prototype of a precious metal clay dried or fired ring bar is taken out.

FIG. 5 is an explanatory sectional view showing a state where molten wax is injected into an impression material mold.

FIG. 6 is an explanatory view of inserting a casting ring rod obtained by casting molten silver into a lost wax mold into a noble metal clay molded body pendant.

FIG. 7 shows a pendant manufactured by the method of the present invention, which is obtained by piercing a molded body ring rod into a molded body of a noble metal clay pendant body and then firing.

FIG. 8 is an explanatory view of a conventional method in which a ring rod produced by punching a thin noble metal plate is inserted into a molded body of a noble metal clay pendant main body.

FIG. 9 shows a pendant manufactured by a conventional method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ring rod of precious metal clay dried body or fired body 1 'Punched ring rod 2 Ring part 2' Ring part 3 Bar part 4 Impression material 5 Impression material mold 6 Cavity 7 Melting wax 8 Molding body of precious metal clay pendant body 11 Precious metal casting Ring stick

Continuation of front page (56) References JP-A-7-227643 (JP, A) JP-A-2-187233 (JP, A) JP-A 9-1284 (JP, A) JP-A-52-68024 (JP) , A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B22C ^7/ 00-9/30

Claims (4)

(57) [Claims] 1. A noble metal clay is shaped, and the obtained shaped body is dried or fired to produce a dried or fired noble metal clay, and the dried or fired noble metal clay is sandwiched between two impression materials as a prototype. After pressing, a mold made of a dried or fired noble metal clay is taken out to produce an impression material mold having a cavity of the same shape as the mold, and molten wax is poured into the cavity of the impression material mold to solidify. By making a wax mold by taking out the obtained wax mold,
A method for producing a decorative article having the same surface condition as a decorative article made of a noble metal clay, wherein a lost wax mold is produced by a lost wax method using the wax mold, and a noble metal melt is cast into the lost wax mold. 2. Molding a noble metal clay to produce a ring rod molding comprising a ring portion and a rod portion, and drying or firing the ring rod molding to produce a ring rod comprising a dried or fired precious metal clay. Then, after pressing the ring rod made of the dried or fired precious metal clay between two impression materials as a prototype and removing the prototype made of the dried or fired precious metal clay, a cavity having the same shape as the prototype is obtained. Is prepared by casting a molten wax into the cavity of the impression material mold and solidifying to form a wax mold, taking out the obtained wax mold, and using the wax mold to perform a lost wax method. A wax mold is prepared, and a precious metal melt is cast into a lost wax mold to form a ring having the same surface condition as a ring rod made of a dried or fired precious metal clay. A ring rod having the same surface state as a pendant made of a noble metal clay characterized in that a ring rod casting is produced, the ring rod casting is stabbed into a molding of a pendant body molded with a noble metal clay, and fired. Manufacturing method of pendant ornaments. 3. A paper clay is molded to produce a ring rod molding comprising a ring portion and a rod portion, and the ring rod molding is dried to produce a dried paper clay ring rod. After sandwiching and pressing the two impression materials with the ring bar as a prototype, an impression material mold having a cavity of the same shape as the prototype is produced by taking out the prototype made of the dried paper clay, and the cavity of the impression material mold is produced. A wax mold is produced by pouring and solidifying a molten wax into the mold, the obtained wax mold is taken out, a lost wax mold is produced by the lost wax method using the wax mold, and the molten precious metal is cast into the lost wax mold. Thus, a ring rod casting having the same surface state as the dried ring rod made of paper clay is produced, and the ring rod casting is stabbed into a pendant molding formed of noble metal clay. A method for producing a pendant decorative article having a ring portion having the same surface state as a pendant made of a noble metal clay, characterized by firing. 4. A clay rod is molded to produce a ring rod molded body comprising a ring portion and a rod portion, and the ring rod molded body is dried to produce a clay dried body ring rod. After pressing as a prototype between two impression materials,
An impression material mold having a cavity of the same shape as the prototype is produced by removing the prototype prepared from the dried clay body,
A molten wax is poured into a cavity of the impression material mold to solidify to form a wax mold, the obtained wax mold is taken out, and a lost wax mold is manufactured by the lost wax method using the wax mold, and a lost wax mold is manufactured. A ring rod casting having the same surface condition as a dry body ring rod made of clay by casting a noble metal melt into the mold, and stabbing the ring rod casting into a molded body of a pendant body molded with noble metal clay, A method for producing a pendant decorative article having a ring portion having the same surface state as a pendant made of a noble metal clay, characterized by firing.