JP2017030020A - Decorative product using noble metal sheet and manufacturing method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide decorative products which have property values in the material of a product itself with high strength and extreme precision in spite of minute size and is capable of exhibiting novel and high industrial design and aesthetic property and configure design and form for every product individually and freely with no restrictions, and provide a manufacturing method for the decorative products.SOLUTION: A decorative product using a noble metal sheet consists of a sheet component constituting part with a predetermined shape cut from a sheet of a noble metal such as platinum or gold and a sheet intermediate constituting part molded by mutual adhesion joint of different kinds or the same kind of sheet component constituting part via laser soldering means to constitute a decorative body by mutual adhesion joint of sheet intermediate constituting parts via the laser soldering means.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a decorative product using a precious metal thin plate and a method for manufacturing the same, and, for example, to a jewelry product, a craft or display product or other decorative product using a precious metal thin plate such as platinum or gold, and a method for manufacturing the same.

  Precious metal ornaments are used primarily for jewelry such as necklaces, pendants, earrings, earrings, brooches, bracelets, chains, rings, and various decorative products such as various crafts and display products. In addition, products of various designs and forms (especially novel ones) are always required according to the characteristics and trends of products, user preferences and usage situations.

  When manufacturing a precious metal decorative body, various processes are appropriately selected depending on the form of the final product, but in general, a predetermined primary processed product (wire material, plate material, pipe, cast material, brazing material, etc.) Are manufactured by combining them by various machining or handwork, and attaching various jewelry. As the material alloy, K18 (18 gold) suitable as a jewelery material is used because it has excellent corrosion resistance, strength and workability, and various colors can be obtained by appropriately adjusting the composition.

  By the way, the lost wax method exists as a typical processing method in the decorative body manufacturing process, and this method is proposed in Patent Document 1, for example. In the lost wax method, a wax model is molded from an original mold, a tree with a plurality of gates attached to it is dipped in a slurry, dried, then dewaxed and fired to create a mold. (Or its parts). The same document shows a manufacturing method in which a plurality of alloys are poured into a single mold appropriately and continuously so as to exhibit a plurality of colors and tones. As an example, platinum alloys are spotted. Shown are red-brown-colored withered branch broaches and blue-type gold alloy tree leaf broaches in which platinum alloys are spotted.

  Further, for example, Patent Document 2 has been proposed regarding the joining of other noble metal members. In this document, in order to solve problems such as the occurrence of softening and damage of joints in brazing, which has been frequently used as a means for joining precious metal members in the past, both ends of the precious metal material to be joined are pressed against each other and pressurized, There is shown a method for manufacturing a noble metal jewelry in which an oxidized portion is removed in a protruding shape by plastic deformation and a non-oxidized portion inside a material appears and is joined.

  Furthermore, for example, Patent Document 3 has been proposed regarding a manufacturing method in which dissimilar metal pieces are assembled to form various types of decorative bodies. In this document, in order to realize a strong joint between different kinds of precious metals, which has been difficult in the past, to express various hues and gloss patterns, a set that collects two or more types of different metal pieces to obtain an aggregate A method of manufacturing an accessory including a step, a pressure bonding step of pressing the aggregate by predetermined means to join metal pieces together to obtain a lump, and a molding step of cutting or scraping the lump into a three-dimensional shape of the accessory Is shown.

Japanese Patent No. 2832564 Japanese Patent Laid-Open No. 9-276016 JP 2014-200575 A

  However, the manufacturing method by the lost wax method is basically a manufacturing method for mass production of a homogeneous product at low cost, and many steps, labor, and costs are required for the production of a mold as an initial stage. Large-scale casting facilities are also required, and once manufactured molds are difficult to apply to the manufacture of other products, the molds must be manufactured individually for each product. For this reason, the lost wax method has a problem that many labors and costs are unavoidable for implementation, and it is difficult to cope with individual production of products. It is not preferable as a method for producing a precious metal decorative body having a strong tendency to fluctuate.

  In addition, casting products are generally suitable for the manufacture of low-priced crude products that are sold in large quantities, and the manufacture of small-sized decorative products that are suitable as jewelry products (accessories) (especially, the ends of ultra-thin plate materials are joined together) Product). In addition, since cast products are formed from a combination of smooth appearance surfaces, their design and aesthetics are limited, and they always meet the insatiable demand for innovative designs and forms required for decorative objects. I can't.

In Patent Document 2, since a high-pressure pressurizing means of at least about 1200 kg / cm ² is essential, a large apparatus and labor are required for execution. In the same document, a free end portion of a ring-shaped member such as a ring or an earring is used. Since only the embodiment which pressurizes is indicated, even if it refers to the literature, it is impossible to tightly join the thin plate end portions to each other.

  In Patent Document 3, dissimilar noble metals can be joined together, and metal pieces are assembled, so that the degree of freedom of product form that can be manufactured is high, but at least explosion welding or HIP (hot isostatic pressing) processing of the assembly And a manufacturing method in which a molding process for three-dimensionally cutting the lump is essential. Moreover, the metal piece processed into the special shape is also needed. For this reason, much trouble and cost burden are unavoidable at the time of execution. Furthermore, even if it refers to the manufacturing method of the same literature, it is not possible to join the end portions of the thin plate of minute size.

  Accordingly, the present invention was developed to solve the above-mentioned problems, and the object of the present invention is to manufacture a large-scale apparatus / equipment, a large number of processes, complicated manual work, or an alloy having a special composition or shape in manufacturing. By making it possible to join the ends of different types of precious metal thin plates beautifully and firmly with only simple materials and processes without requiring materials, the product material itself has property value, A new, high-strength, extremely small but extremely elaborate, innovative and high design and aesthetics that can be freely configured for each product individually and without restrictions. An object of the present invention is to provide a decorative product using a precious metal thin plate and a manufacturing method thereof.

  In order to achieve the above object, the invention according to claim 1 is characterized in that the thin plate component constituent portions having a predetermined shape cut out from a precious metal thin plate such as platinum and gold, and the end portions of the different or similar thin plate component constituent portions are arranged. A thin plate intermediate component formed by tightly bonding through a laser brazing unit and formed, and a thin plate made of noble metal used to form a decorative body by closely bonding the thin plate intermediate component through a laser brazing unit was used. It is a decorative product.

  The invention in claim 2 is a decorative product in which the laser brazing means is joined and fixed by laser welding the groove portions of the end portions of the thin plate component constituting portion or the thin plate intermediate constituting portion with ultrafine wires made of noble metal.

  The invention according to claim 3 is a decorative product in which the thin plate component constituting portion and the thin plate intermediate constituting portion made of a precious metal thin plate are made of platinum, gold or other precious metal.

  The invention according to claim 4 is characterized in that the thin plate component component part and the thin plate intermediate component part are closely joined using noble metal materials having different melting points and different colors, and the design and product by the surface color of each noble metal material It is a decorative product with improved chemical value.

  The invention according to claim 5 is a step of cutting out a predetermined shape from a precious metal thin plate of a different kind or the same kind of platinum or gold, and preparing a thin plate component component, and a step of closely bonding the thin plate component component by laser brazing And a step of tightly joining the ends of the thin plate intermediate component parts by laser brazing, and sequentially constructing the end parts of the thin plate component component parts or the thin plate intermediate component parts by laser brazing to make decorative bodies such as jewelry and crafts. This is a method of manufacturing a decorative product to be manufactured.

  According to the first aspect of the invention, since the ends of the thin plate component component (thin plate intermediate component) are closely bonded by laser brazing, different kinds of precious metals can be beautifully and firmly bonded together, and are large and complicated. Since no precious metal sheet is used without requiring a special machining and an alloy with a special composition and shape, it is possible to manufacture a small and elaborate decorative product with a simple material and process. In addition, the decorative body consists of a thin plate component component or a thin plate intermediate component cut out from a precious metal thin plate, so the design and form of the decorative product can be limited by arbitrarily selecting the shape of these components and combining them arbitrarily. It can be configured individually and freely according to demand.

  In addition, since the product skeleton is a hollow decorative body that combines or laminates thin plate components, it has a unique design and aesthetics that are completely different from the aesthetics that a normal cast product with a smooth appearance surface exhibits. It can be used to provide new artistic value, and an expensive noble metal material can be suppressed to the minimum necessary for the production of a desired decorative body, so that the use efficiency of the material is high. Further, since the precious metal is used as a material, the wearer can enjoy a noble superiority when worn as a jewelry, and a predetermined property value is secured to the material of the product itself.

  According to the invention according to claim 2, in the laser brazing means, since noble metal-made extra fine wires are interposed in the groove part, it is possible to prevent the occurrence of poor brazing due to lack of weld metal, and to perform reliable adhesion bonding, Distortion and deformation due to thermal shock can be prevented.

  According to the invention of claim 3, the noble metal material such as 18K or platinum alloy, which is suitable as a material for the decorative product from various viewpoints such as processability, corrosion resistance, design, cost, and scarcity, can be used for the decorative product of the present invention. Can be manufactured based on

  According to the invention which concerns on Claim 4, the design property of a decorative product can be improved by exhibiting unique hue | tone and color tone in the vicinity of a joining location by carrying out close joining of the noble metal material which has an inherently different color.

  According to the invention according to claim 5, there is no need for large-scale equipment / equipment, many processes, complicated handwork, special alloy materials, etc. at the time of production, only by a simple step using a precious metal thin plate as a material, Although it is a small size, it is extremely sophisticated, has a novel and high design property, and can produce a decorative product that can be freely configured without restriction.

It is the schematic diagram which showed an example of the noble metal thin plate of this invention. Each closed curve of a dotted line has shown the example of various schematic shapes of a thin-plate component structure part. In the laser brazing means in which the end portions of the thin plate constituting portion in the present invention are abutted with each other, (a) is an enlarged cross-sectional view of a main part schematically showing a state in which an ultrafine wire is provided at a groove portion and irradiated with a laser beam ( b) is an enlarged cross-sectional view of the main part schematically showing a state in which the ultrafine wire is melted by laser irradiation in (a), and (c) is an adhesion of the ultrafine wire melted in (b) to the groove portion. The principal part expanded sectional view which showed the joined state typically is shown, respectively. It is the schematic diagram which showed an example of the decoration body or decoration product of this invention.

  Hereinafter, a preferred example of a decorative product using the noble metal thin plate of the present invention and a manufacturing method thereof will be described in detail with reference to the drawings.

  In FIG. 1, reference numeral 1 denotes a noble metal thin plate of the present invention. In this embodiment, the thickness of the thin plate 1 is about 0.2 mm, which is extremely thin, and K18 or Pt900 is used as the material. However, if the thin plate 1 is a thin plate of such platinum, gold, or other noble metal material, It can be selected as appropriate.

  The noble metal thin plate 1 of the present invention is obtained by subjecting a bare metal to a cold press (roller rolling) process. By this processing, it is necessary to further refine the crystal grains to increase the density and to improve the strength of the thin plate 1. By improving the strength, it is possible to prevent the groove portion from being annealed and becoming unweldable during laser brazing described later.

  The shape of the thin plate component component 2 can be arbitrarily selected according to the implementation, but the shapes of various closed curves shown by dotted lines in FIG. 1 are cut from the thin plate 1 in this embodiment so as to have a predetermined shape with a laser. An example of the schematic shape of the thin plate component component 2 cut out by (removal processing) is shown.

  The shape of the thin plate component component 2 in the present embodiment will be described in detail. The thin plate component component 2 has a specific three-dimensional shape represented by a motif of an animal, a human body, various characters, etc. It corresponds to the shape of the cut surface cut into slices in the direction. Although the detailed shape is not shown on each of these cut surfaces, it is necessary that the notch joining groove 2a including a specific shape / number of groove portions be appropriately formed so as to mesh with each other in the vertical direction. It has a structure that can be assembled.

  For example, in the case of the character (decorative body 6) of this embodiment shown in FIG. 3, as shown in the figure, in the head 6a (thin plate intermediate component), a plurality of sheets corresponding to the cut surfaces in the two vertical directions are provided. The thin plate component constituting portions 7 and 8 and a plurality of thin plate component constituting portions 9 corresponding to the cut surface in one horizontal direction are assembled and constructed by sequentially crossing each other in the vertical direction so as to be laminated. In this assembled state, the entire line of the outer end portions of the thin plate component constituting portions 7, 8, 9 (or the thin plate intermediate constituting portion made of them) is laminated and discontinuously formed in the three-dimensional shape of the character head 6a. A typical outer shape emerges. In addition, a thin plate component component 10 that represents a ribbon, a thin plate component component 11 that represents an eye, a thin plate component component 12 that represents a beard, a thin plate component component 13 that represents an ear, and the like are provided as appropriate. Increase artistic value.

  In the present embodiment, the thin plate component constituting unit 10 is provided with a jewelry member 10a such as a diamond piece. The jewelry member 10a is closely fitted to a claw portion that is appropriately processed and formed from the thin plate component constituting portion 10.

  As described above, the vertical assembly construction of the thin plate component parts 7, 8, and 9 can be performed by forming the notch joining groove 2a having an appropriate shape. Moreover, the shape of the thin plate component component 2 having such a notch joining groove 2a can be designed with a closed curve on a relatively simple plane. For example, on the Internet, shapes corresponding to various three-dimensional motifs can be designed. Information is now readily available. For this reason, as shown in FIG. 1, it can cut out from the thin plate 1 suitably.

  Here, as shown in FIG. 1, when designing each shape of the thin plate component component 2 to the thin plate 1, the number and shape of the thin plate component component 2 to be cut out in accordance with the outer shape of the prepared noble metal thin plate 1. Are appropriately selected and combined, and the thin plate 1 is used as efficiently as possible. Therefore, if a pattern composed of a closed curve indicated by a dotted line in the figure is appropriately formed so as to fill the inside of the thin plate 1, an expensive noble metal thin plate 1 is used. This increases the utilization rate, and is preferable. The remaining portion of the noble metal thin plate 1 after cutting out the thin plate component component 2 may be melted and reused as a raw material of the thin plate 1.

  Further, although not shown in FIG. 1, the thin plate intermediate component of the present invention is formed by tightly bonding the ends of the different or similar thin plate component components 2 through a laser brazing means described later. The Furthermore, the decorative body 6 of the present invention shown in FIG. 3 to be described later is configured by tightly joining thin plate intermediate constituent portions through laser brazing means. For this reason, a thin-plate intermediate | middle structure part means arbitrary intermediate members (for example, head 6a, trunk | drum 6b, etc.) which consist of a thin-plate component structure part at the time of comprising the decorative body 6 of FIG. For this reason, the said thin plate component structure part 7, 8, 9, 10, 11, 12, 13 can also be made into the thin plate intermediate structure part comprised from the thin plate component structure part.

  The groove part of the cut-out thin plate component component 2 does not need to be processed basically and may remain in the groove shape cut by laser, but it depends on the form of the laser brazed part and the material characteristics. Then, it may be appropriately processed into a V groove, U groove, X groove shape, or the like. From the viewpoint of usability and ease of processing, a V groove is preferable.

  Subsequently, the laser brazing means of the present invention will be described. In the laser brazing means of this embodiment, a predetermined laser welding machine is manually operated. As the laser welding machine, a desktop type or floor-standing type high-performance laser welding machine that has been developed in recent years and is available on the market for jewelry processing or dental technology is suitable. Laser welder performance includes high-power and high-quality laser beams that can melt various metals, frequency and waveform adjustments that match the characteristics of the metal, and a small spot size that can be adjusted to about 0.1 mm (Focus diameter), high-performance scope that makes it easy to see welding work, laser light source that can be adjusted to any angle, operation unit that is easy to operate with less fatigue and long-time welding work such as supplying brazing material and adjusting the combination and angle of materials , Etc. are particularly suitable, but there are no specific product restrictions.

  FIG. 2 shows laser brazing means in the present embodiment, in which end portions of two different or similar thin plate component constituting portions 2 are butted against each other and are made of a noble metal as a wire brazing material along the groove portion. A configuration in which an extra fine wire 3a is placed, this ultra fine wire 3a is irradiated with a laser beam 5 and welded, and bonded and fixed is schematically shown. It is the principal part expanded sectional view which expanded the groove part vicinity. The groove portion schematically shows an X groove shape as an example.

  In the figure, the thin plate component component 2 shown on the left side has a thickness of 0.2 mm, a material of Pt900, and a melting point of about 1600 ° C. The thin plate component component 2 shown on the right side has a thickness of 0.2 mm, a material of K18, and a melting point of about 800 ° C. The round wire-like ultrathin wire 3a is a build-up material for laser welding, has a diameter of 0.24 mm, a material of K24, and a melting point of about 1200 ° C.

  FIG. 2A schematically shows a state in which the ultrathin wire 3a is placed on the groove portion of the left and right thin plate component constituting portions 2 whose ends are abutted with each other. Since the laser beam 5 is focused on the ultrathin wire 3a and is melted uniformly without unevenness, the laser beam 5 is irradiated with a predetermined minute spot size from an angle perpendicular to the left and right thin plate component parts 2 to start melting. Is preferable. The spot temperature is heated to about 1400 ° C., which is higher than the melting point of the target fine wire 3a, and melted.

  FIG. 2B schematically shows the ultrathin wire 3b in a state where the ultrathin wire 3a is half-melted by irradiation with the laser beam 5 and is in close contact. At this time, the angle of the laser beam 5 is appropriately changed with respect to the thin plate component component 2 and irradiated, and the material of the semi-molten ultrathin wire 3b is as uniform as possible in the groove portions of both the left and right thin plate component components 2. In this way, the occurrence of poor welding due to uneven melting or excessive surging is prevented. As shown in the figure, when irradiated at the angle of the laser beam 5 shown on the right side, homogeneous contact bonding between the ultrafine wire 3b material and the thin plate component component 2 shown on the left side is promoted, and the laser beam shown on the left side is promoted. Irradiation at an angle of 5 promotes uniform close bonding between the ultrathin wire 3b material shown on the right side and the thin plate component component 2, and therefore it is preferable to continue the welding by changing the angle as frequently as possible.

  The thin plate component constituting portion 2 and the thin plate intermediate constituting portion of the present invention are noble metal materials having different melting points and different inherent colors. These are closely bonded by laser brazing means to improve the design by the surface color of each noble metal material.

  FIG. 2C schematically shows a state in which the ultrathin wire 3b is melted to become a tightly bonded portion 3c, and the ends of the left and right thin plate component constituting portions 2 are closely bonded. The color of the tightly bonded portion 3c is finished so that the colors of the thin plate component constituting portion 2 and the ultrathin wire 3b combine with each other to form a gradation on the left and right sides of the figure. In the tight junction 3c in the figure, the left side is Pt900 (thin plate component component 2) and K24 (extra fine wire 3b), and the right side is K18 (thin plate component component 2) and K24 (extra fine wire 3b). Since it melts, it becomes a gradation consisting of a number of different colors depending on different materials. For this reason, it is possible to significantly enhance the aesthetics / design of the joint portion together with the reliable close joint of the groove portion. In addition, it is preferable to polish the tightly bonded portion 3c as appropriate, since extra embossing or the like is removed cleanly to form a smooth surface, and the inside is exposed and the gradation of gradation is more conspicuous.

  FIG. 2 only shows one embodiment of the laser brazing means in the present invention. In addition to welding (contact bonding) in which the end portions shown in FIG. 2 are horizontally butted, the end portions are butted vertically. Then, place a fine wire as a brazing material on the groove part and weld (tightly join), or place one end against the surface of the other member and place an extra fine wire as a brazing material on the contact part Then, the same kind or different kinds of thin plate component constituent parts can be laser brazed in an arbitrary manner by using extra fine wire as a brazing material, such as fillet welding (tight joining). Similarly, the thin plate intermediate constituent parts composed of the thin plate component constituent parts can also be closely bonded via the laser brazing means in any manner using the ultrafine wire as the brazing material.

  Usually, when brazing the ends of members to be joined such as the noble metal thin plate 1, distortion and deformation due to thermal shock are likely to occur due to heating of the members to be joined, and the strength and quality of the joints are likely to deteriorate. . However, in the case of the present invention, the focus of the laser is mainly determined by using a laser brazing means having a laser beam with a high output, high quality, and a small focal diameter after the round core ultrafine wire 3a is used as a wire brazing material. Are applied to the fine wire 3a, and the heating temperature and speed are set optimally with respect to the melting point of the fine wire 3a and brazed. For this reason, the extra fine wire 3a is mainly heated and the member to be joined is not directly heated, and the extra fine wire 3a is melted at an appropriate temperature and speed and welded to the to-be-joined member. Can be effectively suppressed. In addition, since the shape processing and the pressurization are not essential at the joint portion (in the vicinity of the tight joint portion 3c) after the tight joint, the manufacturing process is simplified.

  Further, as the brazing material, the ultrafine wire 3a having the melting point between the thin plate component components 2 having different melting points (or the thin plate intermediate component) is closely bonded by the laser brazing means. It is possible to avoid deterioration of brazing quality due to excessive melting of the precious metal material or poor melting of the precious metal material having a higher melting point, and when the brazing material is melted, the precious metal material having the lower melting point is instantly melted and joined. This makes it possible to securely bond different kinds of precious metals with good quality of the part.

  FIG. 3 is an external view schematically showing the decorative body 6 of the present embodiment. The decorative body of the present invention is formed by tightly bonding thin plate intermediate constituent portions through laser brazing means. The decorative body 6 shown in the figure has a three-dimensional shape of a famous character “Hello Kitty (registered trademark)” as a motif, and includes a head 6a and a trunk 6b that are thin plate intermediate components. Similarly to the above-described head 6a, the body portion 6b also includes a plurality of thin plate component constituting portions 7 and 8 corresponding to the cut surfaces in the two vertical directions, and a plurality of thin plate component configurations corresponding to the horizontal one direction cut surfaces. The parts 9 are assembled and constructed by sequentially crossing each other in the vertical direction so as to be laminated. The decorative body 6 has a height of about 1.5 cm and a weight of about 2 g, and the color of the decorative part 6 is K18 yellow for the thin plate component constituting the ear and K18 pink for the others. Alternatively, the body 6b may be K18 white. The production time of the decorative body 6 is usually about 3 hours to 1 day depending on the proficiency level of the producer.

  As shown in the figure, the decorative body 6 is configured such that plate-like cut surfaces obtained by slicing a three-dimensional motif at equal intervals are stacked vertically and horizontally, so the basic configuration is novel. , Because it can exhibit aesthetics (existence, impact, visual impression, color / tone, tactile sensation, unity, formability, sophistication, playfulness, etc.) that are completely different from decorations made by ordinary casting, etc. It can be said that the artistic value is extremely high. Furthermore, since a precious metal thin plate is used as a material, a predetermined property value is secured to the product material itself.

  The decorative body 6 can be used as it is as a decorative product such as a display product, or can be attached to and detached from an accessory (decorative product) such as a necklace by appropriately joining a ring member or the like.

  Then, the manufacturing method of the decorative product of this invention is demonstrated. As described with reference to FIG. 1, the manufacturing method of the present invention has a step of preparing a thin plate component component 2 by cutting out a predetermined shape from a thin plate 1 made of a different kind or the same kind of platinum or gold. .

  In the above step, when the thin plate component component 2 is cut out from the noble metal thin plate 1 by laser, the shape of the thin plate 1 formed with each shape of the thin plate component component 2 is applied to predetermined software. It is preferable that the software is mounted on the laser welder and is automatically performed using the automatic control function of the laser welder. Furthermore, it is preferable that the thin plate component constituting unit 2 obtained in the above step is appropriately subjected to various processes (such as barrel polishing) for rounding or polishing the end.

  Next, there are a step of closely joining the prepared thin plate component constituent portions 2 by laser brazing and a step of tightly joining the end portions of the thin plate intermediate constituent portions by laser brazing. In this tight bonding by laser brazing, the ultrafine wire 3a as described with reference to FIG. 2 is used as a brazing material. Next, the decorative body 6 is manufactured by sequentially constructing the end portions of the thin plate component constituting portion 2 or the thin plate intermediate constituting portion by laser brazing. As described with reference to FIG. 3, the decorative body 6 is a jewel or a craft.

  As described above, the laser brazing of the thin plate component component 2 or the thin plate intermediate component can be tightly bonded in various manners using the ultrafine wire 3a as a wire brazing material. In the decorative body 6 shown in FIG. 3, for example, after the predetermined thin plate component component or the thin plate intermediate component obtained in the above steps is assembled and constructed by vertically intersecting each other via the notch joining groove 2 a. The vertical crossing of the thin plate component parts 7, 8, and 9 is welded by fillet welding by laser brazing, or the thin plate part component parts 10, 11, 12, and 13 are laser brazed to a predetermined thin plate intermediate component part. The head 6a and the body portion 6b are welded together by laser brazing and tightly joined.

  Furthermore, the present invention is not limited to the description of the above-described embodiment, and various modifications can be made without departing from the scope of the invention described in the claims of the present invention.

DESCRIPTION OF SYMBOLS 1 Precious metal thin plate 2 Thin plate component component part 2a Notch joining groove 3a, 3b Extra fine wire 3c Close junction part 6 Decoration body (decoration product)
6a, 6b Thin plate intermediate component 7, 8, 9, 10, 11, 12, 13 Thin plate component component (thin plate intermediate component)

Claims (5)

  Thin plate intermediate structure that is formed by tightly bonding thin plate component constituent parts having a predetermined shape cut out from a precious metal thin plate such as platinum or gold and the ends of different or similar thin plate component constituent parts via laser brazing means A decorative product using a thin plate made of noble metal, wherein the decorative body is formed by tightly bonding the thin plate intermediate component parts through laser brazing means.   The decorative product according to claim 1, wherein the laser brazing means is bonded and fixed by laser welding the groove portions between the ends of the thin plate component constituting portion or the thin plate intermediate constituting portion with ultrafine wires made of noble metal.   The decorative product according to claim 1 or 2, wherein the thin plate component constituting portion and the thin plate intermediate constituting portion made of the noble metal thin plate are made of platinum, gold or other noble metal.   The thin plate component component and the thin plate intermediate component are closely bonded using precious metal materials having different melting points and unique colors to improve the design and product value by the surface color of each precious metal material. The decorative product according to any one of claims 1 to 3.   A step of cutting out a predetermined shape from a precious metal thin plate of a different kind or the same kind of platinum or gold material to prepare a thin plate component component, a step of closely bonding the thin plate component component by laser brazing, and a thin plate intermediate component The step of tightly joining the end portions by laser brazing and the end portions of the thin plate component constituting portion or the thin plate intermediate constituting portion are sequentially constructed by laser brazing to produce decorative bodies such as jewelry and crafts. A method for producing a decorative product.

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