CN111605353A - Noble metal product and forming method thereof - Google Patents
Noble metal product and forming method thereof Download PDFInfo
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- CN111605353A CN111605353A CN202010431962.8A CN202010431962A CN111605353A CN 111605353 A CN111605353 A CN 111605353A CN 202010431962 A CN202010431962 A CN 202010431962A CN 111605353 A CN111605353 A CN 111605353A
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- 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
- B44C1/22—Removing surface-material, e.g. by engraving, by etching
- B44C1/222—Removing surface-material, e.g. by engraving, by etching using machine-driven mechanical means
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/38—Electroplating: Baths therefor from solutions of copper
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/18—Electroplating using modulated, pulsed or reversing current
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Abstract
The embodiment of the invention provides a noble metal product and a forming method thereof. A diffusion barrier layer capable of preventing materials from diffusing into each other is formed between parts of different materials which are sequentially laminated, and the parts are rolled, so that a noble metal product consisting of a plurality of sub-patterns which are separated by the diffusion barrier layer and arranged at intervals is finally formed. According to the embodiment of the invention, the diffusion barrier layer is formed between the sub-patterns, so that the boundary between the sub-patterns is clear, and the pattern with clear texture is formed.
Description
Technical Field
The invention relates to the field of machine manufacturing, in particular to a precious metal product and a forming method of the precious metal product.
Background
With the increasing aesthetic level of people, the noble metal products with single color can not meet the market demand. Therefore, how to form a clear pattern on at least two colors of noble metals through processing becomes a technical problem to be solved urgently.
Disclosure of Invention
In view of the above, the present invention provides a noble metal product and a method for forming the noble metal product, so that the noble metal product has a clear pattern composed of noble metals of different materials.
In a first aspect, embodiments of the present invention provide a method of forming a precious metal article, the method comprising:
providing alternately stacked parts of at least two different materials;
forming a layer of diffusion barrier material between said parts; and
rolling the parts to a preset thickness to connect the parts into a whole to form a new part, wherein the new part is provided with a pattern;
the pattern is formed by a plurality of sub-patterns arranged at intervals, and a diffusion barrier layer is arranged between the sub-patterns;
wherein adjacent sub-patterns are formed of different materials.
Preferably, the parts providing at least two different materials stacked alternately are in particular: providing first and second alternately stacked pieces of material;
the diffusion barrier material layer formed between the parts is specifically as follows: forming a layer of diffusion barrier material between the first piece of material and the second piece of material; and
rolling the part to a predetermined thickness specifically comprises: rolling the first material piece and the second material piece to a preset thickness to form a first pattern, a diffusion barrier layer and a second pattern which are sequentially arranged;
the material of the first pattern is a first material, and the material of the second pattern is a second material.
Preferably, forming a layer of diffusion barrier material between the first piece of material and the second piece of material comprises:
forming a diffusion barrier material layer between the first material piece and the second material piece using an electroplating process; and/or
A diffusion barrier material layer is formed between the first piece of material and the second piece of material using a vapor deposition process.
Preferably, the forming a diffusion barrier material layer between the first material piece and the second material piece using an electroplating process includes:
soaking the first material piece and the second material piece with a multi-component polarization solution to fill the multi-component polarization solution between the first material piece and the second material piece;
and adopting high-frequency pulse current treatment to reduce cations in the multi-component polarized liquid, and forming a diffusion barrier material layer between the first material piece and the second material piece.
Preferably, the multi-component polarizing liquid comprises one or more of cobalt salt, nickel salt, platinum salt and copper salt;
the material of the diffusion barrier material layer comprises one or more of cobalt, nickel, platinum and copper.
Preferably, the first material and the second material are different in color;
wherein the first material is one of gold, silver, platinum and palladium or an alloy comprising at least one of gold, silver, platinum and palladium;
wherein the second material is one of gold, silver, platinum and palladium or an alloy including at least one of gold, silver, platinum and palladium.
Preferably, the diffusion barrier layer comprises a first solid solution of the diffusion barrier material layer and the first material and/or a second solid solution of the diffusion barrier material layer and the second material piece.
Preferably, the forming method further includes:
welding the first material piece and the second material piece at preset positions so as to fixedly connect the first material piece and the second material piece;
hot-pressing the first material piece, the diffusion barrier material layer and the second material piece by using a vacuum hot-pressing furnace;
freely forging the first material piece, the diffusion barrier material layer and the second material piece so that the deformation amount of the first material piece and the second material piece is 80% -500%;
twisting the alternately stacked first and second pieces of material; and
annealing the first and second pieces of material to relieve stress.
Preferably, the first and second pieces of material are the same size;
wherein the first and second pieces of material have a thickness of 0.1mm to 10 mm.
In a second aspect, embodiments of the present invention provide a noble metal article having a pattern formed by a plurality of sub-patterns arranged at intervals, each sub-pattern having a diffusion barrier layer therebetween;
wherein adjacent sub-patterns are formed of different materials.
Preferably, the different materials are a first material and a second material;
wherein the first material and the second material are different in color;
wherein the first material is one of gold, silver, platinum and palladium or an alloy comprising at least one of gold, silver, platinum and palladium;
wherein the second material is one of gold, silver, platinum and palladium or an alloy including at least one of gold, silver, platinum and palladium.
A diffusion barrier layer capable of preventing materials from diffusing into each other is formed between parts of different materials which are sequentially laminated, and the parts are rolled, so that a noble metal product consisting of a plurality of sub-patterns which are separated by the diffusion barrier layer and arranged at intervals is finally formed. According to the embodiment of the invention, the diffusion barrier layer is formed between the sub-patterns, so that the boundary between the sub-patterns is clear, and the pattern with clear texture is formed.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 is a process flow diagram of a method of forming a precious metal article according to a first embodiment of the present invention;
FIGS. 2-6 are schematic views of structures formed at various steps of a forming method of a first embodiment of the present invention;
FIGS. 7 and 8 are photographs of a workpiece after distortion according to a first embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of a first embodiment of the invention after twisting of the workpiece;
FIG. 10 is a photograph of a workpiece after rolling is completed according to the first embodiment of the present invention;
fig. 11-12 are photographs of a noble metal article according to a second embodiment of the invention;
fig. 13-14 are schematic views of a noble metal article according to a second embodiment of the invention.
Description of reference numerals:
10a first piece of material; 20a second piece of material; 30 welding spots; 40a diffusion barrier material layer; 10a first pattern; 20a second pattern; 40a diffusion barrier layer.
Detailed Description
The present application is described below based on examples, but the present application is not limited to only these examples. In the following detailed description of the present application, certain specific details are set forth in detail. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present application.
Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout this application, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.
It is understood that the purity of the noble metal cannot reach one hundred percent due to process limitations. The pure gold in the embodiment of the invention can be pure gold with the gold content not less than 99%; the pure silver can be silver with silver content more than 99%; the pure platinum may be platinum with a platinum content of 95% or more.
Precious metals such as gold, silver, platinum and palladium are widely applied to preferred materials for jewelry manufacturing based on the local precious and colored characteristics. How to embody the multi-color on the independent jewelry, the subject always leads the process designer to research deeply. However, the current combination of colorful weaving and precision molding is difficult to achieve the seamless joint theme. The hot working process has the defect of alloying transition expansion of noble metal interfaces with different colors, so that the interface is fuzzy, the definition of a pattern texture interface is influenced, and the formed pattern is not beautiful.
In view of the above, embodiments of the present invention provide a method for forming a noble metal product, so as to improve the processing techniques of noble metals with different colors, improve the bonding performance between different noble metals, and avoid the transition diffusion between different noble metals. Further, a noble metal article having a sharp grain pattern is provided.
Fig. 1 is a process flow diagram of a method of forming a precious metal article according to a first embodiment of the present invention. As shown in fig. 1, the method of forming a noble metal article according to the first embodiment of the invention includes the steps of:
step S100, providing first material pieces and second material pieces which are alternately stacked.
Step S200, welding preset positions of the first material piece and the second material piece so as to fixedly connect the first material piece and the second material piece.
Step S300 of forming a diffusion barrier material layer between the first material piece and the second material piece.
And S400, hot-pressing the first material piece, the diffusion barrier material layer and the second material piece by using a vacuum hot-pressing furnace.
Step S500, freely forging the first material piece, the diffusion barrier material layer and the second material piece. So that the deformation of the first and second pieces of material is 80-500%.
Step S600, rolling the first material piece and the second material piece to a preset thickness to form a first pattern, a diffusion barrier layer and a second pattern which are sequentially arranged.
Step S700 of twisting the alternately stacked first material piece and second material piece.
Step S800, annealing the first material piece and the second material piece to eliminate stress.
The first embodiment of the present invention is described by taking the example of alternately laminating two parts made of different materials as an example, but it should be understood that in other embodiments of the present invention, a plurality of parts made of different materials can be alternately laminated to make the color of the formed noble metal ornament richer.
In the embodiment of the present invention, the first material piece and the second material piece are arranged in an ABABAB manner in an alternating stacking manner, and among parts made of a plurality of different materials, the alternating stacking manner may also have a different arrangement manner, taking the example of providing parts made of three different materials which are alternately stacked, and the alternating stacking manner may be abcabcabc or ACBCAB. Furthermore, the melting points of different materials are similar, so that the simultaneous hot processing is convenient.
Fig. 2 to 6 are schematic structural views formed at respective steps of the forming method of the first embodiment of the present invention. As shown in fig. 2, in step S100, first material pieces 10 and second material pieces 20 are provided, which are alternately stacked.
In particular, the first material and the second material are different in color. The first material is one of gold, silver, platinum and palladium or an alloy including at least one of gold, silver, platinum and palladium. The second material is one of gold, silver, platinum and palladium or an alloy including at least one of gold, silver, platinum and palladium.
In an alternative implementation, the first material may be pure gold and the second material may be pure silver. In another alternative implementation, the first material may be pure gold and the second material may be pure platinum. In yet another alternative implementation, the first material may be an alloy comprising gold, such as 18k gold or 14k gold, and the second material is platinum. In other alternative implementations, the first material may be 18k gold and the second material an alloy comprising silver, such as 925 silver.
In this embodiment, the first material is gold, and the second material is silver.
Specifically, the first material piece 10 and the second material piece 20 are formed by a process of cutting, rolling, annealing, ultrasonic cleaning, and drying.
It should be understood that the dimensions of the first piece of material 10 and the second piece of material 20 may be adapted according to design requirements.
In an alternative implementation, the first material piece 10 and the second material piece 20 are the same or substantially the same size. So that the ratio of the first pattern and the second pattern which are finally obtained is equivalent, and the texture is uniform. Wherein the first material piece 10 and the second material piece 20 have a thickness of 0.3mm to 0.8 mm. The thickness of the first material piece 10 and the second material piece 20 is 30mm-50 mm. The length of the first material piece 10 and the second material piece 20 is 50mm-80 mm. In the present embodiment, the first material piece 10 and the second material piece 20 have length, width and height dimensions of 40mm, 60mm and 0.5mm, respectively.
In another alternative implementation, the first and second pieces of material 10, 20 have the same or substantially the same length and width dimensions and different thicknesses. And adjusting the thickness ratio of the first material piece and the second material piece according to design requirements so as to adjust the ratio of the finally obtained first pattern and second pattern to obtain the required pattern.
In the two alternative implementations, the first material piece has the same or substantially the same length and width dimensions, which facilitates clamping.
In another alternative implementation, the first and second pieces of material 10, 20 differ in length, width and thickness dimensions. Different patterns can thereby be obtained.
In an alternative implementation, the surface roughness of the first material piece 10 and the second material piece 20 is 10 or less. The smaller the surface roughness of the first material piece 10 and the second material piece 20 is, the better the bonding force between the diffusion barrier material layer 40 formed between the first material piece 10 and the second material piece 20 and the first material piece 10 and the bonding force between the diffusion barrier material layer 40 and the second material piece 20 are, so that the diffusion barrier material layer 40 is prevented from falling off in the processing process, the non-uniformity of the diffusion barrier material layer 40 is avoided, and the uniformity of the pattern formed on the basis of the first material piece 10 and the second material piece 20 can be improved.
The plurality of first material pieces 10 and the plurality of second material pieces 20 are stacked in sequence. In the present embodiment, 3 first material pieces 10 and 3 second material pieces 20 alternately stacked are taken as an example for explanation. In other alternative embodiments, the number of first and second material pieces 10 and 20 may be determined according to the machining needs.
In an alternative implementation, the plurality of first material pieces 10 and second material pieces 20 are stacked to a thickness of between 30mm and 40 mm.
It should be appreciated that in fig. 2, the gap between the first piece of material 10 and the second piece of material 20 is enlarged for better illustration of the embodiment of the invention. In fact, the first material piece 10 and the second material piece 20 have a better flatness. The first material piece 10 and the second material piece 20 are in contact with each other, and the gap between the first material piece 10 and the second material piece 20 is in the micrometer or nanometer level.
Referring to fig. 3, in step S200, predetermined positions of the first material piece 10 and the second material piece 20 are welded to fixedly connect the first material piece 10 and the second material piece 20.
Specifically, a predetermined portion around the first material piece 10 and the second material piece 20 is welded by using a welding process of argon arc welding, so that the first material piece 10 and the second material piece 20 are fixedly connected. In an alternative implementation, the welding predetermined portion may be a position where four apexes of the first material piece 10 and the second material piece 20 are welded. The welding points 30 are formed at four apex positions of the first material piece 10 and the second material piece 20.
The first material piece 10 and the second material piece 20 are fixedly connected by adopting a welding process, so that the positions of the first material piece 10 and the second material piece 20 are relatively fixed in the subsequent process. The diffusion barrier layer 40a is not peeled off by the relative movement of the first material piece 10 and the second material piece 20. It is also possible to ensure a uniform thickness of the diffusion barrier layer 40a formed between the first material piece 10 and the second material piece 20.
In other alternative implementations, a special clamp or carrier may be used to fix the first material piece 10 and the second material piece 20 relative to each other.
Referring to fig. 4, in step S300, a diffusion barrier material layer 40 is formed between the first material piece 10 and the second material piece 20.
In an alternative implementation, a layer of diffusion barrier material 40 is formed between the first material piece 10 and the second material piece 20 using an electroplating process.
Specifically, forming the diffusion barrier material layer 40 between the first material piece 10 and the second material piece 20 using an electroplating process includes the steps of:
step S301, soaking the first material piece 10 and the second material piece 20 with a multi-component polarization solution to fill the multi-component polarization solution between the first material piece 10 and the second material piece 20.
Specifically, the multi-component polarization liquid comprises one or more of cobalt salt, nickel salt, platinum salt and copper salt. According to the diffusion theory, the multiple polarized liquid can penetrate between the first material piece 10 and the second material piece 20. In this embodiment, the multi-component polarizing fluid may include a copper salt.
Step S302, a high-frequency pulse current process is performed to reduce cations in the multi-component polarization solution, and a diffusion barrier material layer 40 is formed between the first material piece 10 and the second material piece 20.
Specifically, a first material piece 10 and a second material piece 20 soaked with a plurality of polarization solutions are applied with high-frequency pulse current on the first material piece 10 and the second material piece 20 in a plasma device, so that cations in the plurality of polarization solutions are reduced, and a diffusion barrier material layer 40 with a thickness on the nanometer scale and a uniform thickness is formed between the first material piece 10 and the second material piece 20. Specifically, the thickness of the diffusion barrier material layer 40 is 30-100 nanometers. In the present embodiment, the thickness of the diffusion barrier material layer 40 is 40 nm. Specifically, the high-frequency pulse current is polarized for 30 seconds in a vacuum environment at 50-100 ℃. The pulse frequency of the current may range from 100HZ to 3000 HZ.
Specifically, the material of the diffusion barrier material layer 40 includes one or more of cobalt, nickel, platinum, and copper, depending on the polarizing solution. In this embodiment, the multielement polarization fluid may comprise copper.
In other alternative implementations, a vapor deposition process may also be used to form a layer of diffusion barrier material 40 between the first piece of material 10 and the second piece of material 20. The vapor deposition process may be chemical vapor deposition, physical vapor deposition, plasma vapor deposition, and the like. Furthermore, the vapor deposition process may also be epitaxial vapor deposition.
In step S400, the first material piece 10 and the second material piece 20 are hot-pressed using a vacuum hot-pressing furnace.
Specifically, the workpiece formed in step S300 is placed in a vacuum hot-pressing furnace in its entirety, and the specific temperature is set according to the different metals. Alternatively, the temperature can be determined according to the theoretical crystallization temperature Ts, the pressure is 500 Pa-800 Pa, and the pressure is maintained for 10-30 min. In this example, the temperature was set to 425 ℃ and the pressure was 500Pa, maintaining the pressure for 20 min.
As shown in fig. 5, in step S500, the first material piece 10 and the second material piece 20 are free forged such that the amount of deformation of the first material piece 10 and the second material piece 20 is 80% to 500%.
Specifically, the workpiece is free forged on an air hammer to a deformation amount of 80-500%. The temperature control range of free forging is 700-900 ℃. In this example, the temperature is between 700 ℃ and 750 ℃. Cooling the workpiece in air after forging is completed. In this example, the workpiece was forged to a deformation amount of 150%.
As shown in fig. 6, in step S600, the first material piece 10 and the second material piece 20 are rolled to a predetermined thickness to form a first pattern 10a, a diffusion barrier layer 40a, and a second pattern 20a, which are sequentially arranged.
Specifically, the first material piece 10 and the second material piece 20 are rolled for multiple times to make the workpiece reach a predetermined thickness, and the rolling process parameters can be adjusted as required. The rolling may be cold rolling or hot rolling.
During hot pressing, forging and rolling, a first solid solution is formed by the diffusion barrier material layer 40 and the first material and/or a second solid solution is formed by the diffusion barrier material layer 40 and the second material piece 20. Thereby, the diffusion barrier layer 40a composed of the first solid solution and the second solid solution is formed.
During the hot pressing, forging, and rolling, the first material piece 10 and the second material piece 20 recover to recrystallize. Meanwhile, the first material piece 10 and the second material piece 20 respectively form a specific solid solution with the diffusion barrier material layer 40 at a high temperature. Solid solutions are also known as Intermetallic compounds (IMCs) or alloys. Solid solutions include substitutional solid solutions and interstitial solid solutions. Both substitutional and interstitial solid solutions act to make the metal atoms more tightly arranged. The metal atoms on two sides of the solid solution are not easy to diffuse into each other through the solid solution, so that the clear interface between the first material piece 10 and the second material piece 20 can be ensured in the subsequent processing process, and the first material piece 10 and the second material piece 20 cannot be excessively alloyed. Meanwhile, since the diffusion barrier layer 40a is thin, the first material piece 10 and the second material piece 20 can maintain good bondability after forming a solid solution with the first material piece 10 and the second material piece 20.
Fig. 7 and 8 are photographs of the distorted workpiece. FIG. 9 is a schematic cross-sectional view of a distorted workpiece. As shown in fig. 7-9, the first material pieces 10 and the second material pieces 20 of the alternate stack are twisted in step S700. Forming a first pattern 10a, a diffusion barrier layer 40a and a second pattern 20a arranged in sequence
In particular, the twisting may be performed in the middle of a process of multiple rolling.
The workpiece is shaped by twisting and then rolled to form a predetermined pattern.
In an alternative implementation mode, a workpiece with a preset shape is cut, the workpiece is twisted on a twisting machine, the twisting temperature is 880-950 ℃, and the twisting pass is adjusted according to requirements.
In another alternative implementation, as shown in fig. 8, a positioning cavity is machined in the workpiece, and the pattern expansion is displayed as a predetermined texture effect by machining a depth concave position to facilitate later rolling extension.
In other alternative implementations, the workpiece may also be manually twisted.
Fig. 10 is a photograph of the workpiece after completion of rolling. Rolling the workpiece after twisting may have a different pattern, as shown in fig. 10.
In step S800, the first material piece 10 and the second material piece 20 are annealed to relieve stress.
The annealing temperature may specifically be determined for different first and second material pieces 10, 20.
In an alternative implementation, the first and second pieces of material 10 and 20 are gold and platinum, respectively. Annealing can be carried out in a normal-pressure box furnace, the specific annealing parameter is 680-750 ℃, and the temperature is kept for 15 min.
In another alternative implementation, the first and second pieces of material 10, 20 comprise K-gold and are annealed in a decomposition ammonia atmosphere furnace.
In this example, annealing was performed in a vacuum annealing furnace, and oxidation of copper and oxidation of silver due to excessive adsorption of gas could be avoided.
Further processing of the workpiece including the textured pattern shown in fig. 9 can result in different precious metal articles. The precious metal article may be a ring or a bracelet; can also be a trophy or a medal; and may also be a decorative trim. The noble metal article includes a first pattern and a second pattern.
The embodiment of the invention provides a method for forming a noble metal product. The noble metal product is formed by forming a diffusion barrier material layer between a first material piece and a second material piece which are sequentially stacked, and rolling the first material piece, the diffusion barrier material layer and the second material piece, forming a diffusion barrier layer capable of preventing the first material and the second material from being diffused into each other between the first material piece and the second material piece, and finally forming a first pattern formed by the first material piece, a second pattern formed by the second material piece and the diffusion barrier layer between the first pattern and the second pattern. According to the embodiment of the invention, the diffusion barrier layer is formed between the first pattern and the second pattern, so that the boundary between the first material piece and the second material piece is clear, and the pattern with clear texture is formed.
Fig. 11-12 are photographs of a noble metal article according to a second embodiment of the invention. Fig. 13-14 are schematic views of a noble metal article according to a second embodiment of the invention. As shown in fig. 10 to 13, a second embodiment of the present invention provides a noble metal article having a pattern formed by first and second patterns 10a and 20a arranged at intervals with a diffusion barrier layer 40a therebetween.
Specifically, the material of the first pattern 10a is a first material, and the material of the second pattern 20a is a second material.
In particular, the first material and the second material are different in color.
Specifically, the first material is one of gold, silver, platinum, and palladium or an alloy including at least one of gold, silver, platinum, and palladium. The second material is one of gold, silver, platinum and palladium or an alloy including at least one of gold, silver, platinum and palladium.
In particular, the precious metal article may be an ornamental article, such as a ring or a bracelet or the like. The precious metal article may also be an artwork such as a trophy, a medal, a decorative ornament, and the like. In addition, the precious metal product may also be a gift.
The embodiment of the invention provides a precious metal product. The noble metal product is provided with a pattern, the pattern is composed of a first pattern and a second pattern which are arranged at intervals, a diffusion barrier layer is arranged between the first pattern and the second pattern, and the first pattern and the second pattern are provided with clear texture patterns.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A method of forming a precious metal article, the method comprising:
providing alternately stacked parts of at least two different materials;
forming a layer of diffusion barrier material between said parts; and
rolling the parts to a preset thickness to connect the parts into a whole to form a new part, wherein the new part is provided with a pattern;
the pattern is formed by a plurality of sub-patterns arranged at intervals, and a diffusion barrier layer is arranged between the sub-patterns;
wherein adjacent sub-patterns are formed of different materials.
2. Method for forming according to claim 1, characterized in that said provision of alternately stacked parts of at least two different materials is in particular: providing first and second alternately stacked pieces of material;
the diffusion barrier material layer formed between the parts is specifically as follows: forming a layer of diffusion barrier material between the first piece of material and the second piece of material; and
rolling the part to a predetermined thickness specifically comprises: rolling the first material piece and the second material piece to a preset thickness to form a first pattern, a diffusion barrier layer and a second pattern which are sequentially arranged;
the material of the first pattern is a first material, and the material of the second pattern is a second material.
3. The method of forming as claimed in claim 2, wherein forming a layer of diffusion barrier material between the first piece of material and the second piece of material comprises:
forming a diffusion barrier material layer between the first material piece and the second material piece using an electroplating process; and/or
A diffusion barrier material layer is formed between the first piece of material and the second piece of material using a vapor deposition process.
4. The method of forming as claimed in claim 3, wherein said forming a layer of diffusion barrier material between said first piece of material and said second piece of material using an electroplating process comprises:
soaking the first material piece and the second material piece with a multi-component polarization solution to fill the multi-component polarization solution between the first material piece and the second material piece;
and adopting high-frequency pulse current treatment to reduce cations in the multi-component polarized liquid, and forming a diffusion barrier material layer between the first material piece and the second material piece.
5. The method of forming as claimed in claim 4, wherein the multi-component polarizing fluid includes one or more of a cobalt salt, a nickel salt, a platinum salt, and a copper salt;
the material of the diffusion barrier material layer comprises one or more of cobalt, nickel, platinum and copper.
6. The forming method according to claim 2, wherein the first material and the second material are different in color;
wherein the first material is one of gold, silver, platinum and palladium or an alloy comprising at least one of gold, silver, platinum and palladium;
wherein the second material is one of gold, silver, platinum and palladium or an alloy including at least one of gold, silver, platinum and palladium.
7. The method of forming as claimed in claim 2, wherein the diffusion barrier layer comprises a first solid solution of the layer of diffusion barrier material and the first material and/or a second solid solution of the layer of diffusion barrier material and the second piece of material.
8. The forming method of claim 2, further comprising:
welding the first material piece and the second material piece at preset positions so as to fixedly connect the first material piece and the second material piece;
hot-pressing the first material piece, the diffusion barrier material layer and the second material piece by using a vacuum hot-pressing furnace;
freely forging the first material piece, the diffusion barrier material layer and the second material piece so that the deformation amount of the first material piece and the second material piece is 80% -500%;
twisting the alternately stacked first and second pieces of material; and
annealing the first and second pieces of material to relieve stress.
9. The method of forming as claimed in claim 2, wherein the first and second pieces of material are the same size;
wherein the first and second pieces of material have a thickness of 0.1mm to 10 mm.
10. A noble metal article, wherein the noble metal article has a pattern formed by a plurality of sub-patterns arranged at intervals, each sub-pattern having a diffusion barrier layer therebetween;
wherein adjacent sub-patterns are formed of different materials.
11. The precious metal article of claim 10, wherein the different materials are a first material and a second material;
wherein the first material and the second material are different in color;
wherein the first material is one of gold, silver, platinum and palladium or an alloy comprising at least one of gold, silver, platinum and palladium;
wherein the second material is one of gold, silver, platinum and palladium or an alloy including at least one of gold, silver, platinum and palladium.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010431962.8A CN111605353A (en) | 2020-05-20 | 2020-05-20 | Noble metal product and forming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010431962.8A CN111605353A (en) | 2020-05-20 | 2020-05-20 | Noble metal product and forming method thereof |
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| CN111605353A true CN111605353A (en) | 2020-09-01 |
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| CN202010431962.8A Pending CN111605353A (en) | 2020-05-20 | 2020-05-20 | Noble metal product and forming method thereof |
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| CN102440489A (en) * | 2010-10-04 | 2012-05-09 | 有限会社杢目金屋 | Ring production method, device therefor, and ring |
| KR20160113980A (en) * | 2015-03-23 | 2016-10-04 | 램 리써치 코포레이션 | Method for forming stair-step structures |
| KR20180050469A (en) * | 2016-11-04 | 2018-05-15 | 서울시립대학교 산학협력단 | Method of uniting different kind of jewelries using metal thin-film |
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| CN102440489A (en) * | 2010-10-04 | 2012-05-09 | 有限会社杢目金屋 | Ring production method, device therefor, and ring |
| KR20160113980A (en) * | 2015-03-23 | 2016-10-04 | 램 리써치 코포레이션 | Method for forming stair-step structures |
| KR20180050469A (en) * | 2016-11-04 | 2018-05-15 | 서울시립대학교 산학협력단 | Method of uniting different kind of jewelries using metal thin-film |
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