CN116872646B - Preparation method of seamless noble metal artware - Google Patents
Preparation method of seamless noble metal artware Download PDFInfo
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- CN116872646B CN116872646B CN202310992039.5A CN202310992039A CN116872646B CN 116872646 B CN116872646 B CN 116872646B CN 202310992039 A CN202310992039 A CN 202310992039A CN 116872646 B CN116872646 B CN 116872646B
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- 229910000510 noble metal Inorganic materials 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 46
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052737 gold Inorganic materials 0.000 claims abstract description 27
- 239000010931 gold Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 239000011888 foil Substances 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims description 24
- 239000010970 precious metal Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 15
- 238000000465 moulding Methods 0.000 claims description 12
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 11
- 230000004927 fusion Effects 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 11
- 229910052709 silver Inorganic materials 0.000 claims description 9
- 239000004332 silver Substances 0.000 claims description 9
- 239000011449 brick Substances 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000012958 reprocessing Methods 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 4
- 210000001161 mammalian embryo Anatomy 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000010425 asbestos Substances 0.000 claims description 2
- -1 gold-nitrogen-boron Chemical compound 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 229910052895 riebeckite Inorganic materials 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000009966 trimming Methods 0.000 claims description 2
- 229910052755 nonmetal Inorganic materials 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000000748 compression moulding Methods 0.000 abstract description 2
- 238000009713 electroplating Methods 0.000 abstract description 2
- PQTCMBYFWMFIGM-UHFFFAOYSA-N gold silver Chemical compound [Ag].[Au] PQTCMBYFWMFIGM-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011162 core material Substances 0.000 description 53
- 239000011257 shell material Substances 0.000 description 39
- 238000013461 design Methods 0.000 description 5
- 210000003128 head Anatomy 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010112 shell-mould casting Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/24—Pressing or stamping ornamental designs on surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adornments (AREA)
Abstract
The invention discloses a preparation method of a seamless noble metal artwork, in particular to the field of metal product manufacture, which comprises the following steps: preparing an inner core; preparing a split shell; compression molding; and (5) obtaining a finished product. The invention uses the process of covering noble metal thin sheet on the surface of non-metal filler, because the non-metal filler in the middle does not contain any metal component, only the non-metal filler is wrapped outside the filler in a gold foil mode, a small amount of gold is used for making chapters, strips or coins with different sizes, and the like, and the gold-silver bar ornament or the ornament with other shapes is seamlessly jointed in a mode of wrapping the non-metal filler outside the filler compared with the traditional metal foil, so that the whole appearance is free from gaps, and compared with the traditional electroplating mode, when the gold is recovered in the follow-up mode, the external noble metal thin sheet is directly peeled off, thereby meeting the market, increasing the fluidity and creating the benefit.
Description
Technical Field
The invention relates to the technical field of metal product manufacturing, in particular to a preparation method of a seamless noble metal artware.
Background
In recent years, the production technology of Chinese noble metal products is based on the reference of advanced production technology abroad, not only researches and develops various unique production processes in China, but also innovates continuously, and meanwhile, the traditional processes such as a lost wax casting method, sand blasting, mirror surface and the like are commonly applied. However, the most basic precious metal manufacturing technology in China is not limited to casting and die casting, and generally, casting is relative to the manufacturing technology of three-dimensional ornaments and jewelry; and the die casting is relative to the manufacturing process of strip-shaped, round or special-shaped plane products. The two are independent of each other, and the two are not mutually compatible. Pure Jin Chunyin is used as a material with better ductility, can be purified by smelting and other modes, and then is molded into a gold and silver bar ornament by oil pressure. Since ancient times, gold and silver strips are used as investment collection and circulation currency, so far, gold and silver strips are arranged in gold lines of all gold stores, so that the male thickness of funds and financial resources of merchants is displayed, and trust of guests is obtained. However, due to the high cost of the actual gold and silver strips, tens of millions of gold are needed to be used to fill a showcase or counter.
In addition, because of the large specific gravity of gold, the small-area gold decorations cannot meet the requirement that all brands sign the relevant information of investment gold bars on the gold bars, and the area is increased, the gram weight is increased, and the cost is increased. Some merchants can prepare the display ornament by adopting metal as a substrate to carry out gold plating or metal foil wrapping, but the gold plating mode can promote subsequent gold recovery to cause difficulty, and the traditional method has seams when the metal foil is wrapped outside the filler, so that the appearance integrity of the metal ornament can be influenced.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides a preparation method of a seamless noble metal artware, which aims to solve the technical problems that: how to prepare the gold foil package without gaps, so that the appearance of the gold foil package forms a vivid pure gold ornament.
In order to achieve the above object, as one aspect of the present invention, there is provided a method for preparing a seamless noble metal handicraft, which comprises the following steps:
Preparing an inner core:
Casting/injection molding the inner core blank with a nonmetallic material;
Cutting the prepared inner core blank by using a machine tool, and preparing pattern patterns on two sides of the inner core blank;
Preparing a split shell:
preparing a metal sheet, namely smelting a noble metal raw material to prepare a noble metal brick/noble metal strip, and then pressing the noble metal brick/noble metal strip into the metal sheet by using a metal pressing device;
forming a sample shell, processing the prepared metal sheet into a groove-shaped sample shell by adopting a die and a stamping head, and trimming and shaping the edge of the sample shell by using residual materials;
And (5) press forming:
Placing the obtained sample shell and the obtained inner core into a specific pressing die according to the sequence of sample shell, inner core and sample shell, and performing high-pressure fusion molding to obtain an artwork;
And (3) processing a finished product:
and (5) grinding, polishing and forming the joint of the manufactured artwork.
Through putting the inner core and the sample shell in sequence and fusing and forming the inner core and the sample shell in a specific pressing die under high pressure, the gold foil package without gaps can be prepared, so that the appearance of the artwork is more vivid, and the artwork meets the expectations of people on pure gold ornaments.
In the process of preparing the inner core, a machine tool is used for cutting to prepare pattern grains, and through fine cutting processing, more exquisite pattern can be presented on the surface of the artwork, so that the artistic value and the ornamental value of the artwork are increased.
The metal sheet is used as the sample shell material, so that the use amount of noble metal raw materials can be effectively saved. Compared with the traditional metal foil wrapping mode, the method has the advantages that less metal materials are needed, so that the cost for preparing the artwork is reduced, and the method is more economical and practical.
By using a specific pressing die and high-pressure fusion forming, the precise control of the artwork can be realized. The consistency of the size, shape and structure of each artwork can be ensured, and the processing precision and quality stability of the product are improved.
According to the scheme, the seamless and vivid pure gold ornament is prepared by the seamless artwork preparation method, and the method has the beneficial effects of fine grain sample preparation, material saving, processing precision, cost reduction and the like.
In a preferred embodiment, the nonmetallic material is selected from any one of asbestos fiber, glass fiber, gold-nitrogen-boron fiber, carbon fiber or graphite fiber. The nonmetallic material is used as the preparation material of the inner core blank, so that the cost can be reduced and the light weight degree of the artwork can be improved.
In a preferred embodiment, the pattern is set as relief or intaglio according to the form requirement of the artwork, and the core blank needs to be subjected to burr removal before and after the pattern is prepared.
In a preferred embodiment, hole quality inspection is performed after the sample shell is formed, and the metal sheet preparation process is repeated for reprocessing after the unqualified shell is removed, so that the accuracy and consistency of the artwork preparation process can be improved.
In a preferred embodiment, the thickness of the metal foil is set to 1-1.5mm during the preparation of the metal foil, and the noble metal raw material is pure gold or pure silver. The thickness of the metal sheet is controlled, so that the structural requirement of the artwork can be met, and meanwhile, the use amount of noble metal is reduced, so that the preparation cost is reduced. Pure gold or pure silver materials are selected as noble metal raw materials, so that the noble metal content and quality of the artwork can be improved.
In a preferred embodiment, the inner core pattern is formed in the pressing mold in the pressing molding process, the depth of the molding cavity of the pressing mold is smaller than the sum of the thicknesses of the inner core and the two layers of metal sheets, and the depth of the molding cavity of the pressing mold is larger than the thickness of the inner core.
In a preferred embodiment, the high pressure fusion medium pressure during the compression molding is set to 180MPa to 220MPa. By setting proper high-pressure fusion pressure, the internal materials of the artwork can be fully fused and tightly connected, and the structural strength of the artwork is improved. The stability and consistency of the process of preparing the artwork can be realized by controlling the high-pressure fusion pressure.
As another aspect of the invention, there is provided a precious metal artwork made by the above-mentioned seamless precious metal artwork making method, the precious metal artwork being in a three-dimensional shape, comprising an inner core and an outer shell, the inner core being a nonmetallic filler, the outer shell comprising upper and lower precious metal flakes disposed above and below the inner core.
The non-metal filler is used as the inner core material and combined with the noble metal shell, and the non-metal filler is used as the inner core, so that the cost can be reduced, and the weight of the whole artwork is reduced to a certain extent. This makes the handicraft more convenient when hanging and show, also reduces the difficulty of carrying and transporting.
The upper and lower precious metal flakes serve as shell materials that protect the inner core and provide an appearance finish. Meanwhile, the seamless manufacturing method ensures the tight combination between the outer shell and the inner core, so that the artwork has high integrity and durability. The three-dimensional design of the noble metal artware makes the noble metal artware more ornamental and decorative, and can be widely applied to the fields of jewelry, ornaments, collectibles and the like.
It can be seen that the three-dimensional noble metal artwork manufactured by adopting the seamless noble metal artwork manufacturing method has creative and beneficial effects. By combining the core and the shell, and using non-metallic fillers and precious metal flakes, these artwork exhibits uniqueness in appearance, structure and decoration and provides economical, lightweight, durable features.
Further, the noble metal handicraft is a round body, a cuboid or an abnormal body.
Precious metal artwork options of different shapes are provided, including round, rectangular and contoured. This diversified design provides the consumer with a wider choice and opportunity for personalized customization, enabling the artwork to be more diversified in morphology.
The design of the round body, the cuboid or the special-shaped body increases the aesthetic feeling and the artistic quality of the noble metal artware. The shapes can show the luster and the texture of noble metal, so that the handicraft article is more attractive to eyeballs and ornamental, and the handicraft articles with different shapes are suitable for different purposes and occasions. The round body can be used as ornaments such as pendants and rings, the cuboid can be used as ornaments, collectables and the like, and the special body is more innovative and unique, and is suitable for the fields of artworks, designs and the like. The designs of the different shapes enrich the choices of the artware, increase the aesthetic feeling and the artistry and meet the personalized demands of consumers.
Further, the upper noble metal chip and the lower noble metal chip are made of gold foil, silver foil or other materials. The application of different materials ensures that the noble metal artware has changed texture, luster and decorative effect, meets the requirements of consumers on different styles and individuation, and the diversified selection brings greater market potential and attraction to the noble metal artware.
The invention has the technical effects and advantages that:
The invention uses the process of covering noble metal thin sheet on the surface of non-metal filler, because the non-metal filler in the middle does not contain any metal component, only the non-metal filler is wrapped outside the filler in a gold foil mode, a small amount of gold is used for making chapters, strips or coins with different sizes, and the like, and the gold-silver bar ornament or the ornament with other shapes is seamlessly jointed in a mode of wrapping the non-metal filler outside the filler compared with the traditional metal foil, so that the whole appearance is free from gaps, and compared with the traditional electroplating mode, when the gold is recovered in the follow-up mode, the external noble metal thin sheet is directly peeled off, thereby meeting the market, increasing the fluidity and creating the benefit.
Drawings
Fig. 1 is a schematic representation of the core preparation of the present invention.
FIG. 2 is a schematic illustration of the preparation of a foil according to the present invention.
FIG. 3 is a schematic representation of the preparation of a sample shell according to the present invention.
Fig. 4 is a schematic view of a press-combined state structure of the present invention.
FIG. 5 is a schematic view of the structure of a molded workpiece according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
the invention provides a preparation method of a seamless noble metal artwork, which comprises the following specific processing steps:
s1, preparation of an inner core:
s1.1: preparing an inner core blank by using carbon fibers;
S1.2: cutting the inner core blank prepared in the step S1.1 by using a machine tool, preparing pattern patterns on two sides of the inner core blank, setting the pattern patterns to be convex patterns or concave patterns according to the requirements of the artwork form (as shown in figure 1), and removing burrs of the inner core blank before and after preparing the pattern patterns;
s2, preparing a split shell;
S2.1, preparing a metal sheet: as shown in fig. 2, a precious metal brick/precious metal strip is prepared by smelting pure gold, and then pressed into a metal sheet with the thickness of 1.5mm by using a metal pressing device;
s2.2, sample shell molding: referring to fig. 3, the metal sheet prepared in step S2.1 is processed into a groove-shaped sample shell by a die and a stamping head, the edge of the sample shell is trimmed and shaped, the sample shell is subjected to hole quality inspection, and the step S2.1 is repeated for reprocessing after the unqualified shell is removed;
S3, press forming: placing the sample shells and the inner cores obtained in the steps S2 and S1 into a specific pressing die according to the sequence of sample shells, inner cores and sample shells as shown in fig. 4, and performing high-pressure fusion molding under 200MPa to obtain an artwork;
S4, a finished product: as shown in fig. 5, the connection part of the artwork manufactured in the step S3 is ground, polished and formed.
Example 2:
the invention provides a preparation method of a seamless noble metal artwork, which comprises the following specific processing steps:
s1, preparation of an inner core:
s1.1: plastic injection molding is used for manufacturing an inner core blank;
S1.2: cutting the inner core blank prepared in the step S1.1 by using a machine tool, preparing pattern patterns on two sides of the inner core blank, setting the pattern patterns to be convex patterns or concave patterns according to the requirements of the artwork form (as shown in figure 1), and removing burrs of the inner core blank before and after preparing the pattern patterns;
s2, preparing a split shell;
S2.1, preparing a metal sheet: as shown in fig. 2, a precious metal brick/precious metal strip is prepared by smelting pure gold, and then pressed into a metal sheet with the thickness of 1.5mm by using a metal pressing device;
s2.2, sample shell molding: referring to fig. 3, the metal sheet prepared in step S2.1 is processed into a groove-shaped sample shell by a die and a stamping head, the edge of the sample shell is trimmed and shaped, the sample shell is subjected to hole quality inspection, and the step S2.1 is repeated for reprocessing after the unqualified shell is removed;
S3, press forming: placing the sample shells and the inner cores obtained in the steps S2 and S1 into a specific pressing die according to the sequence of sample shells, inner cores and sample shells as shown in fig. 4, and performing high-pressure fusion molding under 200MPa to obtain an artwork;
S4, a finished product: as shown in fig. 5, the connection part of the artwork manufactured in the step S3 is ground, polished and formed.
Example 3:
the invention provides a preparation method of a seamless noble metal artwork, which comprises the following specific processing steps:
s1, preparation of an inner core:
s1.1: plastic injection molding is used for manufacturing an inner core blank;
S1.2: cutting the inner core blank prepared in the step S1.1 by using a machine tool, preparing pattern patterns on two sides of the inner core blank, setting the pattern patterns to be convex patterns or concave patterns according to the requirements of the artwork form (as shown in figure 1), and removing burrs of the inner core blank before and after preparing the pattern patterns;
s2, preparing a split shell;
s2.1, preparing a metal sheet: as shown in fig. 2, a noble metal brick/noble metal strip was prepared by smelting pure silver, and then pressed into a metal sheet having a thickness of 1.5mm using a metal pressing device;
s2.2, sample shell molding: referring to fig. 3, the metal sheet prepared in step S2.1 is processed into a groove-shaped sample shell by a die and a stamping head, the edge of the sample shell is trimmed and shaped, the sample shell is subjected to hole quality inspection, and the step S2.1 is repeated for reprocessing after the unqualified shell is removed;
S3, press forming: placing the sample shells and the inner cores obtained in the steps S2 and S1 into a specific pressing die according to the sequence of sample shells, inner cores and sample shells as shown in fig. 4, and performing high-pressure fusion molding under 200MPa to obtain an artwork;
S4, a finished product: as shown in fig. 5, the connection part of the artwork manufactured in the step S3 is ground, polished and formed.
Example 4:
the invention provides a preparation method of a seamless noble metal artwork, which comprises the following specific processing steps:
s1, preparation of an inner core:
S1.1: the glass fiber is used for manufacturing the inner core embryo, and the glass fiber is used for manufacturing the inner core embryo, so that the inner core embryo has the advantages of light weight, heat resistance, corrosion resistance, strength, rigidity, cost effectiveness and the like.
S1.2: cutting the inner core blank prepared in the step S1.1 by using a machine tool, preparing pattern patterns on two sides of the inner core blank, setting the pattern patterns to be convex patterns or concave patterns according to the requirements of the artwork form (as shown in figure 1), and removing burrs of the inner core blank before and after preparing the pattern patterns;
s2, preparing a split shell;
s2.1, preparing a metal sheet: as shown in fig. 2, a noble metal brick/noble metal strip was prepared by smelting pure silver, and then pressed into a metal sheet having a thickness of 1.5mm using a metal pressing device;
s2.2, sample shell molding: referring to fig. 3, the metal sheet prepared in step S2.1 is processed into a groove-shaped sample shell by a die and a stamping head, the edge of the sample shell is trimmed and shaped, the sample shell is subjected to hole quality inspection, and the step S2.1 is repeated for reprocessing after the unqualified shell is removed;
S3, press forming: placing the sample shells and the inner cores obtained in the steps S2 and S1 into a specific pressing die according to the sequence of sample shells, inner cores and sample shells as shown in fig. 4, and performing high-pressure fusion molding under 200MPa to obtain an artwork;
S4, a finished product: as shown in fig. 5, the connection part of the artwork manufactured in the step S3 is ground, polished and formed.
Example 5:
taking the noble metal artworks prepared in the above embodiments 1-4 respectively, detecting the noble metal artworks prepared in the four embodiments in four groups every 30 pieces as a group, and preparing the noble metal artworks by a traditional metal foil wrapping mode as a comparison example to obtain the following data:
as can be seen from the table, the preparation methods in examples 1 and 4 are optimal, the noble metal artware is prepared in the mode, the pattern lines are obvious, the three-dimensional appearance is smooth and seamless, the complete appearance is obtained to form a vivid pure gold ornament, and the seamless butt joint is realized.
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The preparation method of the seamless noble metal artware is characterized by comprising the following steps of:
Preparing an inner core:
Casting/injection molding the inner core blank with a nonmetallic material;
Cutting the prepared inner core blank by using a machine tool, and preparing pattern patterns on two sides of the inner core blank;
Preparing a split shell:
preparing a metal sheet, namely smelting a noble metal raw material to prepare a noble metal brick/noble metal strip, and then pressing the noble metal brick/noble metal strip into the metal sheet by using a metal pressing device;
Forming a sample shell, processing the prepared metal sheet into a groove-shaped sample shell by adopting a die and a stamping head, and trimming and shaping the edge of the sample shell by using residual materials;
And (5) press forming:
Placing the obtained sample shell and the obtained inner core into a specific pressing die according to the sequence of sample shell, inner core and sample shell, and performing high-pressure fusion molding to obtain an artwork;
And (3) processing a finished product:
and (5) grinding, polishing and forming the joint of the manufactured artwork.
2. The method for preparing the seamless noble metal artware according to claim 1, wherein, the nonmetallic material is any one of asbestos fiber, glass fiber, gold-nitrogen-boron fiber, carbon fiber or graphite fiber.
3. The method for preparing a seamless noble metal handicraft according to claim 1, wherein the pattern is set as relief or intaglio according to the form requirement of the handicraft, and the inner core embryo needs to be subjected to burr removal before and after preparing the pattern.
4. The method for preparing the seamless noble metal artware according to claim 1, wherein the hole quality inspection is carried out after the sample shell is molded, and the metal sheet preparation process is repeated for reprocessing after the unqualified shell is removed.
5. The method for producing a seamless noble metal handicraft according to claim 1, wherein the thickness of the metal foil is set to 1-1.5mm in the process of producing the metal foil, and the noble metal raw material is pure gold or pure silver.
6. The method for producing seamless noble metal handicraft according to claim 5, wherein the interior of the pressing mold is provided with lines corresponding to the pattern of the inner core plate in the pressing molding process, the depth of the molding cavity of the pressing mold is smaller than the sum of the thicknesses of the inner core and the two layers of metal sheets, and the depth of the molding cavity of the pressing mold is larger than the thickness of the inner core.
7. The method for producing a seamless noble metal artware according to claim 1, wherein the high-pressure fusion medium pressure is set to 180MPa-220MPa in the press-forming process.
8. The noble metal artwork is characterized by being manufactured by the seamless noble metal artwork manufacturing method according to any one of claims 1 to 4, wherein the noble metal artwork is three-dimensional and comprises an inner core and a shell, the inner core is a nonmetallic filler, and the shell comprises an upper noble metal sheet and a lower noble metal sheet which are arranged on the upper portion and the lower portion of the inner core.
9. The precious metal artwork of claim 8, wherein the precious metal artwork is a round body, a rectangular body, or a contoured body.
10. The precious metal artwork of claim 9, wherein the upper precious metal sheet and lower precious metal sheet are gold foil, silver foil or other materials.
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|---|---|---|---|---|
| KR20050028397A (en) * | 2003-09-17 | 2005-03-23 | 전기경 | A medal precious metal card manufacture method and the medal |
| CN102513505A (en) * | 2012-01-05 | 2012-06-27 | 浙江金牛工贸有限公司 | Manufacturing method of efficient and loss-stopping noble-metal hollow three-dimensional oscillating piece |
| CN216733712U (en) * | 2022-01-18 | 2022-06-14 | 深圳国礼智造有限公司 | Noble metal composite structure |
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