KR20210092441A - A method for preparing of silver accessory - Google Patents

Abstract

The present invention relates to a method for manufacturing precious metal jewelry, and more specifically, to a method for manufacturing precious metal jewelry, which can significantly reduce an allergy to a user by using natural wax for polishing without using low-melting metals such as lead and bismuth, improves durability by depositing platinum on the surface of a precious metal, and can minimize product defect problems that occur during a manufacturing process.

Description

Method for producing silver accessories {A method for preparing of silver accessory}

The present invention relates to a method of manufacturing silver accessories, and more specifically, by using natural wax for polishing without using a low-melting metal such as lead or bismuth, it is possible to significantly reduce the occurrence of allergy in the user, and to apply platinum to the surface of the precious metal. It relates to a method of manufacturing silver accessories that can improve durability by vapor deposition and minimize product defect problems that occur during the manufacturing process.

In general, jewelry is a generic term for jewelry made of precious metals or natural gems, and is largely divided into fine jewelry and custom jewelry. Usually, fine jewelry is made only of expensive natural gems such as diamonds, rubies, and sapphires, and precious metals such as gold and platinum, and refers to products that can satisfy both wealth and fashion. Custom jewelry, also called fashion jewelry, is suitable for various fashion styles by using imitation jewelry, not natural jewelry, and metal accessories plated with precious metals such as gold, silver, rhodium, and palladium on metal made of zinc, iron, and brass. Products designed to be designed for this purpose are collectively called.

As shown in FIG. 1 , in Patent Document 1, a design step of designing a jewelry product; a mandrel manufacturing step of inputting data of the design product and processing the mandrel by a 3D printer based on the input data; a conductivity imparting step of imparting conductivity to the surface of the mandrel and attaching copper or silver; an electrolytic casting step of plating the conductive mandrel, and periodically applying pulses and reverse pulses to achieve smooth surface treatment up to curved portions or corners; Including; a mandrel removal step of removing the mandrel to complete the jewelry product; including, a pulse-reverse pulse periodic application of not only the outer surface of the jewelry, but also the edge of the jewelry is disclosed to be plated smoothly.

The 3D printed mandrel of the jewelry product as above is designed to be filled with resin inside, so in the process of burning and removing the mandrel after electroforming, the resin, which is the mandrel, receives heat and expands, causing cracks in the final product. and, consequently, there is a problem leading to breakage.

Therefore, in order to supplement the above problems, the present inventors have completed the present invention, recognizing that it is urgent to develop an accessory (jewelry) manufacturing method that can minimize the risk of breakage without cracks occurring.

Republic of Korea Patent Publication No. 10-1871350 Republic of Korea Patent Publication No. 10-1587993

It is an object of the present invention to remarkably reduce the user's allergy occurrence by using natural wax for polishing without using low-melting metals such as lead and bismuth, and to improve durability by depositing platinum on the surface of precious metals, and in the manufacturing process An object of the present invention is to provide a method for manufacturing silver accessories that can minimize the problem of defective products.

Another object of the present invention is to provide a method of manufacturing a silver accessory that has a luxurious aesthetic feeling by bonding beads to the surface of the jewelry or forming an engraved or embossed piece.

The technical problems to be achieved by the invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those of ordinary skill in the art from the description of the present invention.

In order to achieve the above object, the present invention provides a method for manufacturing silver accessories.

Hereinafter, the present specification will be described in more detail.

The present invention provides a method of manufacturing a silver accessory comprising the following steps.

(S1) mixing silver with metal to produce legal pure silver;

(S2) producing a molded article by melting the statutory pure silver and injecting it into a plurality of intaglio molds;

(S3) depositing platinum on the surface of the molding to form a platinum layer; and

(S4) manufacturing an accessory by polishing the molding on which the platinum layer is formed.

In the present invention, the legal pure silver melting is characterized in that it is carried out at 900 to 1200 ℃.

In the present invention, the platinum deposition is characterized in that it is deposited to a thickness of 0.1 to 0.5 ㎛.

In the present invention, the step (S4) is characterized in that it consists of the following steps.

(S4A) fixing the platinum-coated molding to a buff; and

(S4B) grinding the fixed molding with wax.

In the present invention, the buff is cloth, leather or felt, and the wax is carnauba wax, beess wax, carnauba wax, or soy wax. ) is characterized as

The manufacturing method of silver accessories of the present invention can significantly reduce the occurrence of user allergies by using natural wax for polishing without using low-melting metals such as lead and bismuth, and depositing platinum on the surface of precious metals to improve durability and strength. It is possible to improve and minimize product defect problems that occur during the manufacturing process.

In addition, the method for manufacturing silver accessories of the present invention has a luxurious aesthetic feeling by bonding beads to the surface of the jewelry or forming an engraved or embossed piece, and various productions are possible.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a block diagram schematically showing a method of manufacturing a silver accessory according to the present invention.
2 is a silver ring (Example 1) manufactured according to the present invention.
3 is a silver necklace (Example 2) manufactured according to the present invention.

The terms used in this specification have been selected as currently widely used general terms as possible while considering the functions in the present invention, which may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technology, and the like. In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than the name of a simple term.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Numerical ranges are inclusive of the values defined in that range. Every maximum numerical limitation given throughout this specification includes all lower numerical limitations as if the lower numerical limitation were expressly written. Every minimum numerical limitation given throughout this specification includes all higher numerical limitations as if the higher numerical limitation were expressly written. All numerical limitations given throughout this specification shall include all numerical ranges that are better within the broader numerical limits, as if the narrower numerical limitations were expressly written.

Hereinafter, examples of the present invention will be described in detail, but it is obvious that the present invention is not limited by the following examples.

Method of manufacturing silver accessories

The present invention provides a method of manufacturing a silver accessory comprising the following steps.

(S1) mixing silver with metal to produce legal pure silver;

(S2) manufacturing a molded article by melting the statutory pure silver and injecting it into a plurality of intaglio molds;

(S3) depositing platinum on the surface of the molding to form a platinum layer; and

(S4) manufacturing an accessory by polishing the molding on which the platinum layer is formed.

The accessory may be an earring, a ring, a necklace, a bracelet, an anklet, a tiara, a brooch, or a watch band, and is not limited thereto as long as it is an accessory that can be formed into an intaglio frame.

The step (S1) is a step of producing legal pure silver, and more specifically, it may be a step of producing 92.5% of legal pure silver by mixing pure silver and metal.

The pure silver may be silver having a purity of 99.9% or more.

The metal may be copper (Copper, Cu) or stainless steel.

The legal pure silver may be silver having a purity of 92.5%. More specifically, the legal pure silver may be in the form of an alloy of 92.5% by weight of pure silver and 7.5% by weight of copper or stainless steel.

By using the statutory pure silver, durability and strength can be improved, and an oxidation reaction that causes color fading caused by exposure to air can be reduced. In addition, since it does not contain low-melting alloys such as lead and bismuth, it is possible to prevent an allergic reaction of the user.

The step (S2) is a step of manufacturing a molded product, and may consist of the following steps.

(S2A) melting the statutory pure silver at 900 to 1200 °C;

(S2B) injecting the molten legal pure silver into an intaglio frame;

(S2C) cooling the injected legal pure silver to harden; and

(S3D) removing the cooled legal pure silver from the intaglio mold to obtain a molding.

The negative electrode frame is a rubber frame in which an upper portion and a lower portion are separated. A handle protrudes outside the negative electrode frame, and heat and pressure are applied to the negative electrode frame to form an engraved or embossed frame inside the negative electrode frame. molded products can be obtained. For example, a pattern called 'DIAMONDBRIDGE' is formed on the inner front of the cathode frame, and an engraved or embossed frame with a sculpture reminiscent of Gwangan Bridge is formed on the rear surface, and the pattern and the sculpture are molded by the engraved frame. can be

The curing performed in step (S2C) may be cooled at a rate of 1 to 3° C./s (sec) under a nitrogen atmosphere. If the cooling rate in the cooling step is less than 1 ℃ / s (sec), it may be difficult to secure the microstructure required in the molding, conversely, if it exceeds 3 ℃ / s (sec), product properties are improved However, since the width is insignificant, energy and economic efficiency are reduced.

When the accessory is formed of a pendant and a chain, a hollow hole may be formed on one side of the pendant so that the chain may be included in the pendant portion.

Step (S3) is a step of forming a platinum layer, the platinum layer may be deposited to a thickness of 0.1 to 0.5 ㎛.

The platinum layer deposition may be performed by a chemical vapor deposition (CVD) method, a physical vapor deposition method (PVD), a vacuum deposition method and an ion plating method or a vacuum sputtering method. And, preferably, it may be carried out by a chemical vapor deposition method or a physical vapor deposition method, and most preferably, it may be carried out by a physical vapor deposition method.

The chemical vapor deposition method refers to a technology of forming a thin film through a vapor phase reaction by flowing a source gas on a substrate and decomposing the source gas by applying external energy.

When the platinum layer is formed by the chemical vapor deposition method, a source gas is flowed on the molding in a vacuum state, the platinum is vaporized, and the platinum layer is dispersed and deposited on the surface of the molding.

The source gas may be an inert gas, and the inert gas may be helium (He) or argon (Ar), preferably argon.

The platinum may be decomposed and vaporized using heat or plasma.

The physical vapor deposition method refers to a technique of depositing a coated material on the surface of a workpiece by a physical method in a vacuum state.

When the platinum layer is formed by the physical vapor deposition method, platinum may be deposited on the surface of the molding in a vacuum state. When the platinum layer is formed by the physical vapor deposition method, the thickness of the deposited platinum layer is uniform and it is easy to form a multilayer film.

After performing the step (S3), a step of attaching beads or a noble metal to the surface of the deposited platinum layer; may be additionally included.

The step (S4) is a step of finally manufacturing an accessory, and may consist of the following steps.

(S4A) fixing the molded product on which the platinum layer is formed to a buff; and

(S4B) grinding the fixed molding with wax.

The buff is an abrasive fabric made of cloth or other material, and the buff may be cloth, leather, or felt.

The wax may be a natural wax such as carnauba wax, bees wax, carnauba wax, or soy wax.

The carnauba wax is a natural wax obtained and purified from the leaves and shoots of the Brazilian wax palm tree of the palm family (Copernicia cereferia Mart). When the carnauba wax is used for polishing, the color of the surface can be thickened, thereby improving a luxurious aesthetic feeling.

The beeswax is a natural wax obtained by refining lead obtained from a honeycomb. When the bead wax is used for polishing, an oil film may be formed on the surface of the molding to make the surface of the accessory shiny.

The carnauba wax is a natural wax extracted from the leaves of a carnauba palm tree that grows wild in Brazil. When the carnauba wax is used for polishing, since it has the highest hardness among natural waxes, the hardness of finally manufactured accessories can be improved, and water resistance, heat resistance, and glossiness can be improved.

The soy wax is a natural wax extracted from soybeans. When the soy wax is used for polishing, it has a special scent, so that you can feel a sense of stability when wearing accessories.

Advantages and features of the present invention, and methods for achieving them, will become apparent with reference to the embodiments described below in detail. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims.

Legal pure silver was prepared by mixing silver having a purity of % and copper of 7.5% by weight. The statutory pure silver is melted at 1100° C., and the 'DIAMONDBRIDGE' pattern is formed on the inside front side, and a sculpture reminiscent of Gwangan Bridge is formed on the back side. After cooling at a rate of ℃/s (sec), the cooled legal pure silver was removed from the engraving mold to obtain a molded article. Then, a platinum layer with a thickness of 3 μm is deposited on the surface of the molding using a physical vapor deposition (PVD) method, and the molding on which the platinum layer is formed is fixed to a felt to obtain carnauba wax. By grinding with a silver ring of the present invention was manufactured, which is shown in FIG.

Example 2. Preparation of silver necklace

By mixing silver having a purity of 92.5% and copper of 7.5% by weight, legal pure silver was prepared. The legal pure silver is melted at 1100 ° C., the legal pure silver is injected into an engraving frame in which a sculpture reminiscent of Gwangan Bridge is formed on the inside, and cooled at a rate of 2 ° C./s (sec) so that the legal pure silver is hardened. After that, the cooled legal pure silver was removed from the intaglio mold to obtain a molded product. Then, a platinum layer with a thickness of 3 μm is deposited on the surface of the molding by using a physical vapor deposition (PVD) method, and the molding on which the platinum layer is formed is fixed to a felt, followed by carnauba wax (carnauba wax). ) to prepare a silver necklace of the present invention, which is shown in FIG. 3 .

Experimental Example 1. Confirmation of Vickers hardness of silver accessories

Using the silver accessories according to Examples 1 and 2, hardness (VH) was measured according to ASTM D2230, and the results are shown in [Table 1] below.

[Table 1]

As can be seen in [Table 1], it can be confirmed that the Vickers hardness of the silver accessory according to the present invention is high.

Experimental Example 2. Confirmation of tensile strength of silver accessories

Using the silver accessories according to Examples 1 and 2, tensile strength (Ts) was measured (unit: MPa) according to ASTM E1450, and the results are shown in Table 2 below.

[Table 2]

As can be seen in [Table 2], it can be seen that the tensile strength of the silver accessory according to the present invention is significantly improved compared to that of pure silver 170 .

From the above description, those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without changing the technical spirit or essential characteristics thereof. In this regard, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims (5)

(S1) mixing silver with metal to produce legal pure silver;
(S2) manufacturing a molded article by melting the statutory pure silver and injecting it into a plurality of intaglio molds;
(S3) depositing platinum on the surface of the molding to form a platinum layer; and
(S4) manufacturing an accessory by polishing the molding on which the platinum layer is formed; According to claim 1,
The statutory pure silver melting is a manufacturing method of precious metal jewelry, characterized in that carried out at 900 to 1200 ℃. According to claim 1,
The platinum deposition is a method of manufacturing a precious metal jewelry, characterized in that the deposition to a thickness of 0.1 to 0.5 ㎛. According to claim 1,
The step (S4) is,
(S4A) fixing the platinum-coated molding to a buff; and
(S4B) The method of manufacturing a precious metal jewelry comprising a; grinding the fixed molding with wax. 5. The method of claim 4,
The buff is cloth, leather or felt,
The method of manufacturing precious metal jewelry, characterized in that the wax is carnauba wax, bees wax, carnauba wax or soy wax.

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