CN113561694A - 24K gold inlaying process on silver coin - Google Patents
24K gold inlaying process on silver coin Download PDFInfo
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- CN113561694A CN113561694A CN202110887352.3A CN202110887352A CN113561694A CN 113561694 A CN113561694 A CN 113561694A CN 202110887352 A CN202110887352 A CN 202110887352A CN 113561694 A CN113561694 A CN 113561694A
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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
- B44C1/26—Inlaying with ornamental structures, e.g. niello work, tarsia work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
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- 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
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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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- 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
- B44C1/225—Removing surface-material, e.g. by engraving, by etching by engraving
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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
- B44C1/28—Uniting ornamental elements on a support, e.g. mosaics
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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Abstract
The invention discloses a 24K gold inlaying process on a silver coin, which comprises the following steps: s1: melting gold, namely putting unformed gold into a pot for melting; s2: pouring the gold solution into a mould for cooling and forming; s3: polishing, namely, utilizing a polishing machine to enable the surface of the casting to generate luster; s4: holding the mold, and finishing the surface of the casting by using a tool; s5: inlaying, namely inlaying the prepared gold on the silver coin; s6: calendaring, using a tool to contact the gold surface and rub the workpiece; s7: turning, namely turning the surface of a gold overhaul tool, preparing gold with the purity of 24K for melting in the step S1, adding a repaired mouth in a melting pot, wherein the ratio of the gold to the repaired mouth is 7.5:2.5, and the repaired mouth can be made of any one of copper, silver and palladium.
Description
Technical Field
The invention relates to the technical field of gold, in particular to a 24K gold inlaying process on a silver coin.
Background
Gold is the elemental form of the chemical element gold (Au), a soft, golden yellow, corrosion-resistant noble metal. Gold is one of the more rare, precious and highly appreciated metals. Gold is a very important metal in ounces in general in the world and in "two" in ancient China. Not only is special currency for storage and investment, but also is an important material for departments of industry, electronic industry, modern communication, aerospace industry and the like.
At present, an ornament formed by mutually inlaying noble metals of various materials is gradually created in the market, or the ornament can exert the characteristics of the noble metals such as color, luster, hardness and the like, so that the ornament is more colorful, but the manufacturing process of the existing inlaying process is rough, so that the manufactured combined noble metals are monotonous and rough, and the exquisite degree is not high, therefore, a 24K gold inlaying process on silver coins is provided for solving the problems.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a 24K gold inlaying process on a silver coin.
The invention provides a 24K gold inlaying process on a silver coin, which comprises the following steps:
s1: melting gold, namely putting unformed gold into a pot for melting;
s2: pouring the gold solution into a mould for cooling and forming;
s3: polishing, namely, utilizing a polishing machine to enable the surface of the casting to generate luster;
s4: holding the mold, and finishing the surface of the casting by using a tool;
s5: inlaying, namely inlaying the prepared gold on the silver coin;
s6: calendaring, using a tool to contact the gold surface and rub the workpiece;
s7: and (4) lathing, namely lathing the surface of the gold by a worker.
Preferably, gold melting in the step S1 needs to prepare gold with a purity of 24K, a repaired mouth needs to be added into a melting pot, the ratio of gold to repaired mouth is 7.5:2.5, the specific material of the repaired mouth can be any one of copper, silver and palladium, the melting pot for gold melting is a quartz crucible, acetylene flame needs to be used for firing the quartz crucible, the gold and the repaired mouth are added when the quartz crucible is fired at 600 ℃, the quartz crucible is more suitable for melting gold compared with other crucibles, the quartz crucible has the advantages of high purity, strong temperature resistance, large size, high precision, good heat preservation, energy saving, stable quality and the like, the application is more and more extensive, the quartz crucible has no resistance, when medium-frequency current passes, the metal material in the quartz crucible generates induction heating, the quartz crucible does not generate heating, acetylene has a molecular formula of C2H2, commonly known as wind coal or carbide gas, is the member with the smallest volume in alkyne compounds, and is mainly used for industrial application, particularly for metal welding.
Preferably, in the step S2, pouring molten gold into a gypsum mold by using a high-frequency or medium-frequency centrifugal casting machine to cast the casting, and finally, spontaneous combustion, standing still and cooling the casting for 10-40 minutes, then putting the casting into cold water for blasting, then taking out the casting, brushing impurities on the surface of the casting by using a steel brush, then putting the casting into thirty percent hydrofluoric acid for soaking for 10-20 minutes, then taking out and cleaning, wherein the centrifugal casting machine is used for pouring liquid gold into the gypsum mold, filling and solidifying the liquid gold into the casting under the action of centrifugal force, and the hydrofluoric acid can corrode dirt and gypsum powder on the surface and in gaps.
Preferably, in step S3, the surface of the casting is polished by a magnetic polisher or a roller polisher until gloss is generated, and the polishing can reduce the roughness of the gold surface to obtain a bright and flat surface, and the method is a method of modifying the surface of the workpiece by using a polishing tool and abrasive particles or other polishing media, and the polishing can not improve the dimensional accuracy or geometric accuracy of the workpiece, but can be used for smooth surface or mirror gloss, and sometimes can also be used for eliminating gloss (delustering), and usually uses a polishing wheel as a polishing tool, the polishing wheel is generally made by stacking multiple layers of canvas, felt or leather, and both sides are clamped by a metal circular plate, the rim thereof is coated with a polishing agent formed by uniformly mixing micro powder abrasive and grease, and during polishing, the polishing wheel rotating at high speed (peripheral speed is more than 20 m/S) is pressed against the workpiece to roll and micro-cut the workpiece surface by the abrasive, so as to obtain a bright processing surface, the surface roughness can generally reach Ra0.63-0.01 microns, and when a non-greasy extinction polishing agent is adopted, the bright surface can be extinguished to improve the appearance.
Preferably, in step S4, the polished casting is welded, filed, hammered, and the deformation and surface roughness of the casting during casting are repaired, and the polished gold is repaired to achieve a beautiful shape and a smooth surface, each gold is manually repaired and polished by holding the gold in a mold, and then the gold is inlaid and electroplated after holding the gold in the mold, and the holding process is an important process in processing and a process which takes a long time in processing.
Preferably, the inlaying process in the step S5 adopts a resin inlaying method, the epoxy resin, the butyl phthalate and the diethylenetriamine are mixed according to a ratio of 60-100:10-20:5-10 to prepare the resin, the silver coin is cleaned, the resin is placed in an oven at 85 ℃ for preheating, after preheating is completed, the resin is coated on the position of the silver coin where gold needs to be inlaid, finally, the gold is correspondingly placed on the silver coin, the gold held on the silver coin is correspondingly bonded on the silver coin by using the prepared resin, and after the resin is cooled, the inlaying of the gold on the silver coin is completed without heating and pressurizing, the operation is simple, and the equipment is simple.
Preferably, in the step of S6, an agate pen is used to contact the gold surface and rub the workpiece, so that the gold surface is shiny.
Preferably, in step S7, a pattern carving machine with a diamond carving tool is used to make the pattern carving on the surface of the product, wherein the carving is a process of carving patterns on the surface of the product with a professional tool, and the process has the advantage of vivid and beautiful pattern.
The invention has the beneficial effects that:
1. the surface of the gold is polished and trimmed in the process of polishing and mold-holding passing, so that the surface of the gold looks glossier and more delicate.
2. By adopting the resin embedding method, heating and pressurizing are not needed, the equipment is simple, the method is suitable for embedding samples made of various materials, a corresponding die is selected according to the shape and the size of the sample, a plurality of samples can be embedded at one time, and the production efficiency is high.
According to the invention, gold is saved by adding the repaired mouth in the gold melting process, and the gold looks brighter and more delicate by polishing for multiple times, so that the gold melting method is proposed to be widely popularized.
Drawings
Fig. 1 is a flow chart of the present invention.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The embodiment provides a 24K gold inlaying process on a silver coin, which comprises the following steps:
s1: melting gold, putting unformed gold into a pot for melting, needing to prepare gold with the purity of 24K, needing to add a repaired mouth into the melting pot, wherein the ratio of the gold to the repaired mouth is 7.5:2.5, the specific material of the repaired mouth can be any one of copper, silver and palladium, the pot for melting the gold is a quartz crucible, needing to use acetylene flame to fire the quartz crucible, adding the gold and the repaired mouth when the quartz crucible is fired at 520 ℃, the quartz crucible is more suitable for melting the gold compared with other crucibles, the quartz crucible has the advantages of high purity, strong temperature resistance, large size, high precision, good heat preservation, energy saving, stable quality and the like, the application is wide, the quartz crucible has no resistance, when medium-frequency current passes, the metal material in the quartz crucible generates induction heating, the quartz crucible does not generate heat, acetylene has the molecular formula of C2H2, is commonly known as wind coal or acetylene, is the smallest volume member in alkyne compounds, and is mainly used for industrial application, particularly for metal welding;
s2: pouring a gold solution into a mould for cooling and forming, pouring melted gold into a gypsum mould by using a high-frequency or medium-frequency pouring centrifugal pouring machine to pour a casting, spontaneous combustion, standing and cooling the casting for 30 minutes, putting the casting into cold water for blasting, taking the casting out, brushing impurities on the surface of the casting by using a steel brush, soaking the casting in thirty percent hydrofluoric acid for 15 minutes, taking the casting out and cleaning, pouring liquid gold into the gypsum mould by using the centrifugal pouring machine, filling and solidifying the casting under the action of centrifugal force, wherein the hydrofluoric acid can corrode dirt and gypsum powder on the surface and in gaps of the gold;
s3: polishing, namely polishing the surface of a casting by using a polishing machine, polishing the surface of the casting by using a magnetic polishing machine or a roller polishing machine until the surface generates gloss and the polishing can reduce the roughness of the gold surface to obtain a bright and flat surface, wherein the polishing is carried out on the surface of a workpiece by using a polishing tool and abrasive particles or other polishing media, the polishing can not improve the dimensional precision or the geometric precision of the workpiece, but can be used for obtaining a smooth surface or mirror gloss and can be used for eliminating the gloss (extinction) sometimes, a polishing wheel is usually used as the polishing tool, the polishing wheel is generally formed by laminating multiple layers of canvas, felt or leather, two sides are clamped by a metal circular plate, a polishing agent formed by uniformly mixing abrasive micro powder and grease and the like is coated on the rim of the polishing wheel, and the polishing wheel rotating at high speed (the peripheral speed is more than 20 m/s) is pressed against the workpiece during polishing, the abrasive material rolls and cuts the surface of the workpiece in a micro-scale manner, so that a bright machined surface is obtained, the surface roughness can reach Ra0.63-0.01 microns generally, and when a non-greasy extinction polishing agent is adopted, the bright surface can be extinguished to improve the appearance;
s4: the method comprises the following steps of (1) carrying out die holding, namely, finishing the surface of a casting by using a tool, using welding, filing and hammering, finishing the deformation and surface roughness of the casting in the casting process, finishing and repairing polished gold to achieve the processes of attractive appearance and smooth surface, wherein each gold piece needs to be manually finished and polished by holding the die, and then is embedded and electroplated after being held, and the die holding process is an important process in processing and also a process which takes a long time in processing;
s5: inlaying, inlaying the prepared gold on the silver coin, wherein the inlaying process adopts a resin inlaying method, firstly, epoxy resin, butyl phthalate and diethylenetriamine are mixed according to the proportion of 70:15:8 to prepare resin, firstly, the silver coin is cleaned, then, the resin is placed in an oven with the temperature of 85 ℃ for preheating, after preheating is finished, the resin is coated on the position, needing to be inlaid with the gold, on the silver coin, the gold is placed on the silver coin correspondingly, the inlaying resin is namely an epoxy resin inlaying technology, the epoxy resin inlaying sample is applied, heating and pressurizing are not needed, equipment is simple, the inlaying process is suitable for inlaying samples of various materials, a corresponding mould is selected according to the shape and size of the sample, a plurality of samples can be inlaid at one time, and the production efficiency is high;
s6: calendering, namely, using a tool to contact the gold surface and rub the workpiece, and using an agate pen to contact the gold surface and rub the workpiece to enable the gold surface to generate brightness;
s7: the flower turning is a process, namely, a professional tool turning tool is used for carving patterns on the surface of a product, and the process has the advantage that the patterns are very vivid and beautiful.
Example two
The embodiment provides a 24K gold inlaying process on a silver coin, which comprises the following steps:
s1: melting gold, putting unformed gold into a pot for melting, needing to prepare gold with the purity of 24K, needing to add a supplement port into the melting pot, wherein the ratio of the gold to the supplement port is 7.5:2.5, the specific material of the supplement port can be any one of copper, silver and palladium, the pot for melting the gold is a quartz crucible, needing to use acetylene flame to fire the quartz crucible, adding the gold and the supplement port when the quartz crucible is fired at 530 ℃, the quartz crucible is more suitable for melting the gold compared with other crucibles, the quartz crucible has the advantages of high purity, strong temperature resistance, large size, high precision, good heat preservation, energy saving, stable quality and the like, the application is wide, the quartz crucible has no resistance, when medium-frequency current passes, the metal material in the quartz crucible generates induction heating, the quartz crucible does not generate heat, acetylene has the molecular formula of C2H2, is commonly known as aeolian coal or acetylene, is the smallest volume member in alkyne compounds, and is mainly used for industrial application, particularly for metal welding;
s2: pouring a gold solution into a mould for cooling and forming, pouring melted gold into a gypsum mould by using a high-frequency or medium-frequency pouring centrifugal pouring machine to pour a casting, spontaneous combustion, standing and cooling the casting for 30 minutes, putting the casting into cold water for blasting, taking the casting out, brushing impurities on the surface of the casting by using a steel brush, soaking the casting in thirty percent hydrofluoric acid for 18 minutes, taking the casting out and cleaning, pouring liquid gold into the gypsum mould by using the centrifugal pouring machine, filling and solidifying the casting under the action of centrifugal force, wherein the hydrofluoric acid can corrode dirt and gypsum powder on the surface and in gaps of the gold;
s3: polishing, namely polishing the surface of a casting by using a polishing machine, polishing the surface of the casting by using a magnetic polishing machine or a roller polishing machine until the surface generates gloss and the polishing can reduce the roughness of the gold surface to obtain a bright and flat surface, wherein the polishing is carried out on the surface of a workpiece by using a polishing tool and abrasive particles or other polishing media, the polishing can not improve the dimensional precision or the geometric precision of the workpiece, but can be used for obtaining a smooth surface or mirror gloss and can be used for eliminating the gloss (extinction) sometimes, a polishing wheel is usually used as the polishing tool, the polishing wheel is generally formed by laminating multiple layers of canvas, felt or leather, two sides are clamped by a metal circular plate, a polishing agent formed by uniformly mixing abrasive micro powder and grease and the like is coated on the rim of the polishing wheel, and the polishing wheel rotating at high speed (the peripheral speed is more than 20 m/s) is pressed against the workpiece during polishing, the abrasive material rolls and cuts the surface of the workpiece in a micro-scale manner, so that a bright machined surface is obtained, the surface roughness can reach Ra0.63-0.01 microns generally, and when a non-greasy extinction polishing agent is adopted, the bright surface can be extinguished to improve the appearance;
s4: the method comprises the following steps of (1) carrying out die holding, namely, finishing the surface of a casting by using a tool, using welding, filing and hammering, finishing the deformation and surface roughness of the casting in the casting process, finishing and repairing polished gold to achieve the processes of attractive appearance and smooth surface, wherein each gold piece needs to be manually finished and polished by holding the die, and then is embedded and electroplated after being held, and the die holding process is an important process in processing and also a process which takes a long time in processing;
s5: inlaying, namely inlaying the prepared gold on the silver coin, wherein the inlaying process adopts a resin inlaying method, firstly, epoxy resin, butyl phthalate and diethylenetriamine are mixed according to the proportion of 90:13:9 to prepare resin, firstly, the silver coin is cleaned, then, the resin is placed in an oven at 85 ℃ for preheating, after preheating is finished, the resin is coated on the position, needing to be inlaid with the gold, on the silver coin, finally, the gold is correspondingly placed on the silver coin, the gold held on the silver coin is correspondingly bonded on the silver coin by using the prepared resin, and after the resin is cooled, the inlaying of the gold on the silver coin is finished without heating and pressurizing, the operation is simple, and the equipment is simple;
s6: calendering, namely, using a tool to contact the gold surface and rub the workpiece, and using an agate pen to contact the gold surface and rub the workpiece to enable the gold surface to generate brightness;
s7: the flower turning is a process, namely, a professional tool turning tool is used for carving patterns on the surface of a product, and the process has the advantage that the patterns are very vivid and beautiful.
EXAMPLE III
The embodiment provides a 24K gold inlaying process on a silver coin, which comprises the following steps:
s1: melting gold, putting unformed gold into a pot for melting, needing to prepare gold with the purity of 24K, needing to add a repaired mouth into the melting pot, wherein the ratio of the gold to the repaired mouth is 7.5:2.5, the specific material of the repaired mouth can be any one of copper, silver and palladium, the pot for melting the gold is a quartz crucible, needing to use acetylene flame to fire the quartz crucible, adding the gold and the repaired mouth when the quartz crucible is fired at 560 ℃, the quartz crucible is more suitable for melting the gold compared with other crucibles, the quartz crucible has the advantages of high purity, strong temperature resistance, large size, high precision, good heat preservation, energy saving, stable quality and the like, the application is wide, the quartz crucible has no resistance, when medium-frequency current passes, the metal material in the quartz crucible generates induction heating, the quartz crucible does not generate heat, acetylene has the molecular formula of C2H2, is commonly known as wind coal or acetylene, is the smallest volume member in alkyne compounds, and is mainly used for industrial application, particularly for metal welding;
s2: pouring a gold solution into a mould for cooling and forming, pouring melted gold into a gypsum mould by using a high-frequency or medium-frequency pouring centrifugal pouring machine to pour a casting, spontaneous combustion, standing and cooling for 28 minutes, putting the casting into cold water for blasting, taking the casting out, brushing impurities on the surface of the casting by using a steel brush, soaking the casting in thirty percent hydrofluoric acid for 13 minutes, taking the casting out and cleaning, pouring liquid gold into the gypsum mould by using the centrifugal pouring machine, filling and solidifying the casting under the action of centrifugal force, wherein the hydrofluoric acid can corrode dirt and gypsum powder on the surface and in gaps of the gold;
s3: polishing, namely polishing the surface of a casting by using a polishing machine, polishing the surface of the casting by using a magnetic polishing machine or a roller polishing machine until the surface generates gloss and the polishing can reduce the roughness of the gold surface to obtain a bright and flat surface, wherein the polishing is carried out on the surface of a workpiece by using a polishing tool and abrasive particles or other polishing media, the polishing can not improve the dimensional precision or the geometric precision of the workpiece, but can be used for obtaining a smooth surface or mirror gloss and can be used for eliminating the gloss (extinction) sometimes, a polishing wheel is usually used as the polishing tool, the polishing wheel is generally formed by laminating multiple layers of canvas, felt or leather, two sides are clamped by a metal circular plate, a polishing agent formed by uniformly mixing abrasive micro powder and grease and the like is coated on the rim of the polishing wheel, and the polishing wheel rotating at high speed (the peripheral speed is more than 20 m/s) is pressed against the workpiece during polishing, the abrasive material rolls and cuts the surface of the workpiece in a micro-scale manner, so that a bright machined surface is obtained, the surface roughness can reach Ra0.63-0.01 microns generally, and when a non-greasy extinction polishing agent is adopted, the bright surface can be extinguished to improve the appearance;
s4: the method comprises the following steps of (1) carrying out die holding, namely, finishing the surface of a casting by using a tool, using welding, filing and hammering, finishing the deformation and surface roughness of the casting in the casting process, finishing and repairing polished gold to achieve the processes of attractive appearance and smooth surface, wherein each gold piece needs to be manually finished and polished by holding the die, and then is embedded and electroplated after being held, and the die holding process is an important process in processing and also a process which takes a long time in processing;
s5: inlaying, namely inlaying the prepared gold on the silver coin, wherein the inlaying process adopts a resin inlaying method, firstly, epoxy resin, butyl phthalate and diethylenetriamine are mixed according to the proportion of 90:17:9 to prepare resin, firstly, the silver coin is cleaned, then, the resin is placed in an oven at 85 ℃ for preheating, after preheating is finished, the resin is coated on the position, needing to be inlaid with the gold, on the silver coin, finally, the gold is correspondingly placed on the silver coin, the gold held on the silver coin is correspondingly bonded on the silver coin by using the prepared resin, and after the resin is cooled, the inlaying of the gold on the silver coin is finished without heating and pressurizing, the operation is simple, and the equipment is simple;
s6: calendering, namely, using a tool to contact the gold surface and rub the workpiece, and using an agate pen to contact the gold surface and rub the workpiece to enable the gold surface to generate brightness;
s7: the flower turning is a process, namely, a professional tool turning tool is used for carving patterns on the surface of a product, and the process has the advantage that the patterns are very vivid and beautiful.
Example four
The embodiment provides a 24K gold inlaying process on a silver coin, which comprises the following steps:
s1: melting gold, putting unformed gold into a pot for melting, needing to prepare gold with the purity of 24K, needing to add a supplement port into the melting pot, wherein the ratio of the gold to the supplement port is 7.5:2.5, the specific material of the supplement port can be any one of copper, silver and palladium, the pot for melting the gold is a quartz crucible, needing to use acetylene flame to fire the quartz crucible, adding the gold and the supplement port when the quartz crucible is fired to 540 ℃, the quartz crucible is more suitable for melting the gold compared with other crucibles, has the advantages of high purity, strong temperature resistance, large size, high precision, good heat preservation, energy saving, stable quality and the like, has wide application, does not have resistance, when medium-frequency current passes, metal materials in the quartz crucible generate induction heating, the quartz crucible does not generate heating, acetylene has the molecular formula of C2H2, is commonly called as wind coal or acetylene, is the smallest volume member in alkyne compounds, and is mainly used for industrial application, particularly for metal welding;
s2: pouring a gold solution into a mould for cooling and forming, pouring melted gold into a gypsum mould by using a high-frequency or medium-frequency pouring centrifugal pouring machine to pour a casting, spontaneous combustion, standing and cooling for 20 minutes, putting the casting into cold water for blasting, taking the casting out, brushing impurities on the surface of the casting by using a steel brush, soaking the casting in thirty percent hydrofluoric acid for 17 minutes, taking the casting out and cleaning, pouring liquid gold into the gypsum mould by using the centrifugal pouring machine, filling and solidifying the casting under the action of centrifugal force, wherein the hydrofluoric acid can corrode dirt and gypsum powder on the surface and in gaps of the gold;
s3: polishing, namely polishing the surface of a casting by using a polishing machine, polishing the surface of the casting by using a magnetic polishing machine or a roller polishing machine until the surface generates gloss and the polishing can reduce the roughness of the gold surface to obtain a bright and flat surface, wherein the polishing is carried out on the surface of a workpiece by using a polishing tool and abrasive particles or other polishing media, the polishing can not improve the dimensional precision or the geometric precision of the workpiece, but can be used for obtaining a smooth surface or mirror gloss and can be used for eliminating the gloss (extinction) sometimes, a polishing wheel is usually used as the polishing tool, the polishing wheel is generally formed by laminating multiple layers of canvas, felt or leather, two sides are clamped by a metal circular plate, a polishing agent formed by uniformly mixing abrasive micro powder and grease and the like is coated on the rim of the polishing wheel, and the polishing wheel rotating at high speed (the peripheral speed is more than 20 m/s) is pressed against the workpiece during polishing, the abrasive material rolls and cuts the surface of the workpiece in a micro-scale manner, so that a bright machined surface is obtained, the surface roughness can reach Ra0.63-0.01 microns generally, and when a non-greasy extinction polishing agent is adopted, the bright surface can be extinguished to improve the appearance;
s4: the method comprises the following steps of (1) carrying out die holding, namely, finishing the surface of a casting by using a tool, using welding, filing and hammering, finishing the deformation and surface roughness of the casting in the casting process, finishing and repairing polished gold to achieve the processes of attractive appearance and smooth surface, wherein each gold piece needs to be manually finished and polished by holding the die, and then is embedded and electroplated after being held, and the die holding process is an important process in processing and also a process which takes a long time in processing;
s5: inlaying, namely inlaying the prepared gold on the silver coin, wherein the inlaying process adopts a resin inlaying method, firstly, epoxy resin, butyl phthalate and diethylenetriamine are mixed according to the proportion of 80:15:7 to prepare resin, firstly, the silver coin is cleaned, then, the resin is placed in an oven at 85 ℃ for preheating, after preheating is finished, the resin is coated on the position, needing to be inlaid with the gold, on the silver coin, finally, the gold is correspondingly placed on the silver coin, the gold held on the silver coin is correspondingly bonded on the silver coin by using the prepared resin, and after the resin is cooled, the inlaying of the gold on the silver coin is finished without heating and pressurizing, the operation is simple, and the equipment is simple;
s6: calendering, namely, using a tool to contact the gold surface and rub the workpiece, and using an agate pen to contact the gold surface and rub the workpiece to enable the gold surface to generate brightness;
s7: the flower turning is a process, namely, a professional tool turning tool is used for carving patterns on the surface of a product, and the process has the advantage that the patterns are very vivid and beautiful.
EXAMPLE five
The embodiment provides a 24K gold inlaying process on a silver coin, which comprises the following steps:
s1: melting gold, putting unformed gold into a pot for melting, needing to prepare gold with the purity of 24K, needing to add a repaired mouth into the melting pot, wherein the ratio of the gold to the repaired mouth is 7.5:2.5, the specific material of the repaired mouth can be any one of copper, silver and palladium, the pot for melting the gold is a quartz crucible, needing to use acetylene flame to fire the quartz crucible, adding the gold and the repaired mouth when the quartz crucible is fired at 510 ℃, the quartz crucible is more suitable for melting the gold compared with other crucibles, has the advantages of high purity, strong temperature resistance, large size, high precision, good heat preservation, energy saving, stable quality and the like, has wide application, does not have resistance, when medium-frequency current passes, metal materials in the quartz crucible generate induction heating, the quartz crucible does not generate heating, acetylene has the molecular formula of C2H2, is commonly called as wind coal or acetylene, is the smallest volume member in alkyne compounds, and is mainly used for industrial application, particularly for metal welding;
s2: pouring a gold solution into a mould for cooling and forming, pouring melted gold into a gypsum mould by using a high-frequency or medium-frequency pouring centrifugal pouring machine to pour a casting, spontaneous combustion, standing and cooling the casting for 30 minutes, putting the casting into cold water for blasting, taking the casting out, brushing impurities on the surface of the casting by using a steel brush, soaking the casting in thirty percent hydrofluoric acid for 17 minutes, taking the casting out and cleaning, pouring liquid gold into the gypsum mould by using the centrifugal pouring machine, filling and solidifying the casting under the action of centrifugal force, wherein the hydrofluoric acid can corrode dirt and gypsum powder on the surface and in gaps of the gold;
s3: polishing, namely polishing the surface of a casting by using a polishing machine, polishing the surface of the casting by using a magnetic polishing machine or a roller polishing machine until the surface generates gloss and the polishing can reduce the roughness of the gold surface to obtain a bright and flat surface, wherein the polishing is carried out on the surface of a workpiece by using a polishing tool and abrasive particles or other polishing media, the polishing can not improve the dimensional precision or the geometric precision of the workpiece, but can be used for obtaining a smooth surface or mirror gloss and can be used for eliminating the gloss (extinction) sometimes, a polishing wheel is usually used as the polishing tool, the polishing wheel is generally formed by laminating multiple layers of canvas, felt or leather, two sides are clamped by a metal circular plate, a polishing agent formed by uniformly mixing abrasive micro powder and grease and the like is coated on the rim of the polishing wheel, and the polishing wheel rotating at high speed (the peripheral speed is more than 20 m/s) is pressed against the workpiece during polishing, the abrasive material rolls and cuts the surface of the workpiece in a micro-scale manner, so that a bright machined surface is obtained, the surface roughness can reach Ra0.63-0.01 microns generally, and when a non-greasy extinction polishing agent is adopted, the bright surface can be extinguished to improve the appearance;
s4: the method comprises the following steps of (1) carrying out die holding, namely, finishing the surface of a casting by using a tool, using welding, filing and hammering, finishing the deformation and surface roughness of the casting in the casting process, finishing and repairing polished gold to achieve the processes of attractive appearance and smooth surface, wherein each gold piece needs to be manually finished and polished by holding the die, and then is embedded and electroplated after being held, and the die holding process is an important process in processing and also a process which takes a long time in processing;
s5: inlaying, namely inlaying the prepared gold on the silver coin, wherein the inlaying process adopts a resin inlaying method, firstly, epoxy resin, butyl phthalate and diethylenetriamine are mixed according to the proportion of 65:17:7 to prepare resin, firstly, the silver coin is cleaned, then, the resin is placed in an oven at 85 ℃ for preheating, after preheating is finished, the resin is coated on the position, needing to be inlaid with the gold, on the silver coin, finally, the gold is correspondingly placed on the silver coin, the gold held on the silver coin is correspondingly bonded on the silver coin by using the prepared resin, and after the resin is cooled, the inlaying of the gold on the silver coin is finished without heating and pressurizing, the operation is simple, and the equipment is simple;
s6: calendering, namely, using a tool to contact the gold surface and rub the workpiece, and using an agate pen to contact the gold surface and rub the workpiece to enable the gold surface to generate brightness;
s7: the flower turning is a process, namely, a professional tool turning tool is used for carving patterns on the surface of a product, and the process has the advantage that the patterns are very vivid and beautiful.
Comparing the conventional gold inlaying process with the 24K gold handicraft inlaid on the silver coin prepared in the first to fifth examples, the 24K gold handicraft prepared in the first to fifth examples is as follows:
| examples | A | II | III | Fourthly | Five of them |
| Color formation | 99.4% | 99.5% | 99.7% | 99.8% | 99.3% |
From the above table, the 24K gold damascene process of the present invention is significantly improved, and the fourth embodiment is the best embodiment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A24K gold inlaying process on silver coins is characterized by comprising the following steps:
s1: melting gold, namely putting unformed gold into a pot for melting;
s2: pouring the gold solution into a mould for cooling and forming;
s3: polishing, namely, utilizing a polishing machine to enable the surface of the casting to generate luster;
s4: holding the mold, and finishing the surface of the casting by using a tool;
s5: inlaying, namely inlaying the prepared gold on the silver coin;
s6: calendaring, using a tool to contact the gold surface and rub the workpiece;
s7: and (4) lathing, namely lathing the surface of the gold by a worker.
2. The process of inlaying 24K gold on a silver coin as claimed in claim 1, wherein the gold melting in step S1 requires preparation of gold with a purity of 24K, a gap is added in the melting pot, the ratio of gold to gap is 7.5:2.5, the gap can be made of any one of copper, silver and palladium, the gold melting pot is a quartz crucible, the quartz crucible is fired by acetylene flame, and the gold and the gap are added when the quartz crucible is fired at 600 ℃ of 500-.
3. The process of inlaying 24K gold on silver coins as claimed in claim 1, wherein in the step of S2, pouring molten gold into a gypsum mold by using a high frequency or medium frequency centrifugal pouring machine to pour out a casting, and finally, the casting is spontaneously ignited, left to stand, cooled for 10-40 minutes, put into cold water to be subjected to deep-frying, taken out to be brushed to remove impurities on the surface of the casting by using a steel brush, and then put into thirty percent hydrofluoric acid to be soaked for 10-20 minutes, and then taken out to be cleaned.
4. A process of 24K gold inlay on silver coins as claimed in claim 1, wherein the step S3 is performed by polishing the surface of the cast product until gloss is generated by using a magnetic polisher or a roller polisher.
5. A process of 24K gold inlay on silver coins as claimed in claim 1, wherein the step S4 is required to weld, file, hammer and trim the casting with deformation and surface roughness during casting.
6. The process of claim 1, wherein the inlaying process in step S5 is a resin inlaying process, the process comprising the steps of mixing epoxy resin, butyl collard and diethylenetriamine in a ratio of 60-100:10-20:5-10 to obtain resin, cleaning the silver coin, preheating the resin in an oven at 85 ℃, coating the resin on the position of the silver coin where gold needs to be inlaid, and finally placing the gold on the silver coin correspondingly.
7. A process according to claim 1 wherein the step S6 includes contacting the gold surface with an agate pen and rubbing the workpiece to produce a shiny finish on the gold surface.
8. A process as claimed in claim 1, wherein the step S7 is performed by using a diamond turning machine to make pattern batch engraving on the surface of the product.
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