CN108790560A - A kind of processing method of noble metal commemorative coin - Google Patents
A kind of processing method of noble metal commemorative coin Download PDFInfo
- Publication number
- CN108790560A CN108790560A CN201810766120.0A CN201810766120A CN108790560A CN 108790560 A CN108790560 A CN 108790560A CN 201810766120 A CN201810766120 A CN 201810766120A CN 108790560 A CN108790560 A CN 108790560A
- Authority
- CN
- China
- Prior art keywords
- coin
- commemorative coin
- sandblasting
- noble metal
- technology
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B44C1/22—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
- 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
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Printing Methods (AREA)
Abstract
The invention discloses a kind of processing methods of noble metal commemorative coin, include the following steps：Mirror surface treatment：Stringent polishing treatment is carried out by the surface to production mould and base cake, so that the commemorative coin surface produced is obtained the flatness and finish of height, keeps the contrast of its pattern and bottom surface more strong, level is more clearly demarcated.The present invention is by using thumbnail line technology, thumbnail line is transferred on coin product, to achieve the purpose that improve product false proof performance, by using fine picture and text technical finesse, its anti-fake form combined completely with lines with point, show abundant curve, thickness, the types of patterns such as candlestick chart, the technology anti-counterfeiting performance is higher, use general common software, the modes such as electrical discharge machining and laser scanning can not forge, it can not circulate to solve noble metal commemorative coin, it is only used for collecting, the poor problem of anti-counterfeiting performance compared with negotiable common commemorative coin and currency.
Description
Technical field
The present invention relates to metal working technical area, specially a kind of processing method of noble metal commemorative coin.
Background technology
Commemorative coin is that a country is in honor of international or the major event of the politics of this country, history, culture etc., outstanding
The legal tender of personage, the scenic spots and historical sites, rare animals and plants, competitive sports etc. and distribution, it includes common commemorative coin and noble metal
Commemorative coin.Quality is generally refined, limited edition.
Noble metal commemorative coin includes the noble metals such as gold coin, silver coin, platinum coin, palladium coin or the commemorative coin of its alloy casting, material
It is the precious metals such as gold, silver.Subject matter is extensive, technique is fastidious, ornamental value is strong and mostly complete grouping distribution.Coin shape also has circle
Coin, rectangular coin, color coin and fan-shaped coin, 5 yuan of face amount meter, ten yuan, 30 yuan, fifty yuan, 100 yuan, Wu Baiyuan, 1,000 yuan
Deng the issue price of this coin is generally equal to tens times or hundreds of times of face amount.Therefore, denomination is symbolistic currency sign
Number, it does not indicate its true value, cannot circulate, face amount does not charge to market cash flow flux.
It since noble metal commemorative coin can not circulate, is only used for collecting, with negotiable common commemorative coin and currency
It is poor compared to anti-counterfeiting performance, for this purpose, it is proposed that a kind of processing method of noble metal commemorative coin.
Invention content
The purpose of the present invention is to provide a kind of processing methods of noble metal commemorative coin, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the present invention provides the following technical solutions：A kind of processing method of noble metal commemorative coin, including
Following steps：
（1）Mirror surface treatment：Stringent polishing treatment is carried out by the surface to production mould and base cake, makes the commemorative coin produced
Surface obtains the flatness and finish of height, keeps the contrast of its pattern and bottom surface more strong, level is more clearly demarcated；
（2）Blasting treatment：Commemorative coin is made to the different sand of the selected pattern certain applications mesh number of the production mould for needing to use
Grain is injected into frosting to selected bottom surface or pattern, forms solidifying white effect, increases the three-dimensional sense and stereovision of coin face figure line；
（3）Color processing：By color painting colored printing is carried out on souvenir badge, coin surface；
（4）Roll word and intaglio：Using the method typefounding on edge silk tooth rolled after base cake rolling before casting or casting, and by gold
The principle for belonging to refractive power, takes on the embossment in coin face and concaves towards engraving；
（5）Anti-fake processing：By using micro image treatment, fine figure line technology, laser shadow technology and ultra micro engraving technology
In one or more commemorative coin is handled.
Preferably, the step（2）In blasting craft include uniform sandblasting, gradual change sandblasting, multi-level sandblasting, regurgitate
Sand, decorative grid sandblasting etc..
Preferably, the anti-blasting craft is locally to take bright technique in former embossment or word sandblasting part, there is craft
Mold polish and chemical mould polish two methods, increase the expressive force in coin face, wherein multi-level blasting craft is using not
With the sandblasting effect of mesh number.
Preferably, the step（4）Middle thumbnail line technology be using computer aided design software make micro text,
Letter or pattern, are inscribed on coin mold using laser engraving machine, by molding and embossing process steps, make these thumbnails
Line is transferred on coin product.
Preferably, the step（4）In fine figure line technology be to utilize optical principle, by laser-engraving technique, simultaneously
The anti-counterfeiting technologies such as the figure line of outlet, item combination, including ground-tint, embossment, group's flower, stealth are designed and produced in conjunction with special-purpose software.
Preferably, the step（4）Middle laser shadow technology utilize high-precision laser engraving machine, first mold bottom surface into
Row laser sandblasting effect makes, then the laser shadow of different levels or effect is carried out in the sand blasted surface of bottom surface（Figure line or word）
Engraving, shows more hidden figure line effect.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is by using thumbnail line technology, by thumbnail
Line is transferred on coin product, complete by using fine picture and text technical finesse to achieve the purpose that improve product false proof performance
The anti-fake form for the national games combined with lines with point, shows the types of patterns such as abundant curve, thickness, candlestick chart, the technology is anti-
Pseudo- performance is higher, can not be forged using modes such as general common software, electrical discharge machining and laser scannings, by using laser
Shadow technology, the technology are more demanding to the precision and technical parameter of laser engraving machine, and fake producer is difficult to copy at present, to solve
Noble metal commemorative coin of having determined can not circulate, and be only used for collecting, anti-fake compared with negotiable common commemorative coin and currency
The poor problem of performance.
Specific implementation mode
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of technical solution：A kind of processing method of noble metal commemorative coin, includes the following steps：
（1）Mirror surface treatment：Stringent polishing treatment is carried out by the surface to production mould and base cake, makes the commemorative coin produced
Surface obtains the flatness and finish of height, keeps the contrast of its pattern and bottom surface more strong, level is more clearly demarcated；
（2）Blasting treatment：Commemorative coin is made to the different sand of the selected pattern certain applications mesh number of the production mould for needing to use
Grain is injected into frosting to selected bottom surface or pattern, forms solidifying white effect, increases the three-dimensional sense and stereovision of coin face figure line；
（3）Color processing：By color painting colored printing is carried out on souvenir badge, coin surface；
（4）Roll word and intaglio：Using the method typefounding on edge silk tooth rolled after base cake rolling before casting or casting, and by gold
The principle for belonging to refractive power, takes on the embossment in coin face and concaves towards engraving；
（5）Anti-fake processing：By using micro image treatment, fine figure line technology, laser shadow technology and ultra micro engraving technology
In one or more commemorative coin is handled.
Embodiment one：
Mirror surface treatment is carried out first：Stringent polishing treatment is carried out by the surface to production mould and base cake, makes to produce
Commemorative coin surface obtains the flatness and finish of height, keeps the contrast of its pattern and bottom surface more strong, level is more clearly demarcated；
Then blasting treatment is carried out：Commemorative coin is made to the different sand of the selected pattern certain applications mesh number of the production mould for needing to use
Grain is injected into frosting to selected bottom surface or pattern, forms solidifying white effect, increases the three-dimensional sense and stereovision of coin face figure line；So
After carry out color processing：By color painting colored printing is carried out on souvenir badge, coin surface；Then rolling word and intaglio are carried out：It adopts
The method typefounding on edge silk tooth rolled with base cake rolling before casting or after casting, and by the principle of metal refractive power, in coin face
Embossment on take and concave towards engraving；Finally carry out anti-fake processing：By using micro image treatment, fine figure line technology, laser
One or more in shadow technology and ultra micro engraving technology handle commemorative coin.
Embodiment two：
In embodiment one, following processes are added：
Step（2）In blasting craft include uniform sandblasting, gradual change sandblasting, multi-level sandblasting, regurgitate sand, decorative grid sandblasting
Deng；Anti- blasting craft is locally to take bright technique in former embossment or word sandblasting part, there is Manual mold polishing and chemical mould
Two methods of tool polishing, increase the expressive force in coin face, wherein multi-level blasting craft is the sandblasting effect using different meshes.
Mirror surface treatment is carried out first：Stringent polishing treatment is carried out by the surface to production mould and base cake, makes production
The commemorative coin surface gone out obtains the flatness and finish of height, keeps the contrast of its pattern and bottom surface more strong, level is more
Clearly；Then blasting treatment is carried out：Commemorative coin is made to the selected pattern certain applications mesh number of the production mould for needing to use not
Same sand grains is injected into frosting to selected bottom surface or pattern, forms solidifying white effect, the three-dimensional sense and layer of increase coin face figure line
Secondary sense；Wherein blasting craft includes uniform sandblasting, gradual change sandblasting, multi-level sandblasting, regurgitates sand, decorative grid sandblasting etc.；Instead
Blasting craft is locally to take bright technique in former embossment or word sandblasting part, has Manual mold polishing and chemical mould to throw
Two methods of light increase the expressive force in coin face, wherein multi-level blasting craft is the sandblasting effect using different meshes；Then
Carry out color processing：By color painting colored printing is carried out on souvenir badge, coin surface；Then rolling word and intaglio are carried out：Using
Method typefounding on edge silk tooth that base cake is rolled or rolled after casting before casting, and by the principle of metal refractive power, in coin face
It is taken on embossment and concaves towards engraving；Finally carry out anti-fake processing：It is dark by using micro image treatment, fine figure line technology, laser
One or more in shadow technology and ultra micro engraving technology handle commemorative coin.
Embodiment three：
In embodiment two, following processes are added：
Step（4）Middle thumbnail line technology is to make micro text, letter or pattern using computer aided design software, is used
Laser engraving machine is inscribed on coin mold, by molding and embossing process steps, these thumbnail lines is made to be transferred to coin production
On product.
Mirror surface treatment is carried out first：Stringent polishing treatment is carried out by the surface to production mould and base cake, makes production
The commemorative coin surface gone out obtains the flatness and finish of height, keeps the contrast of its pattern and bottom surface more strong, level is more
Clearly；Then blasting treatment is carried out：Commemorative coin is made to the selected pattern certain applications mesh number of the production mould for needing to use not
Same sand grains is injected into frosting to selected bottom surface or pattern, forms solidifying white effect, the three-dimensional sense and layer of increase coin face figure line
Secondary sense；Wherein blasting craft includes uniform sandblasting, gradual change sandblasting, multi-level sandblasting, regurgitates sand, decorative grid sandblasting etc.；Instead
Blasting craft is locally to take bright technique in former embossment or word sandblasting part, has Manual mold polishing and chemical mould to throw
Two methods of light increase the expressive force in coin face, wherein multi-level blasting craft is the sandblasting effect using different meshes；Then
Carry out color processing：By color painting colored printing is carried out on souvenir badge, coin surface；Then rolling word and intaglio are carried out：Using
Method typefounding on edge silk tooth that base cake is rolled or rolled after casting before casting, and by the principle of metal refractive power, in coin face
It is taken on embossment and concaves towards engraving；Finally carry out anti-fake processing：It is dark by using micro image treatment, fine figure line technology, laser
One or more in shadow technology and ultra micro engraving technology handle commemorative coin；Wherein thumbnail line technology is to utilize calculating
Machine Autocad makes micro text, letter or pattern, is inscribed, is passed through on coin mold using laser engraving machine
Molding and embossing process steps make these thumbnail lines be transferred on coin product.
Example IV：
In embodiment three, following processes are added：
Step（4）In fine figure line technology be to be set in combination with special-purpose software by laser-engraving technique using optical principle
Meter makes the anti-counterfeiting technologies such as the figure line of outlet, item combination, including ground-tint, embossment, group's flower, stealth.
Mirror surface treatment is carried out first：Stringent polishing treatment is carried out by the surface to production mould and base cake, makes production
The commemorative coin surface gone out obtains the flatness and finish of height, keeps the contrast of its pattern and bottom surface more strong, level is more
Clearly；Then blasting treatment is carried out：Commemorative coin is made to the selected pattern certain applications mesh number of the production mould for needing to use not
Same sand grains is injected into frosting to selected bottom surface or pattern, forms solidifying white effect, the three-dimensional sense and layer of increase coin face figure line
Secondary sense；Wherein blasting craft includes uniform sandblasting, gradual change sandblasting, multi-level sandblasting, regurgitates sand, decorative grid sandblasting etc.；Instead
Blasting craft is locally to take bright technique in former embossment or word sandblasting part, has Manual mold polishing and chemical mould to throw
Two methods of light increase the expressive force in coin face, wherein multi-level blasting craft is the sandblasting effect using different meshes；Then
Carry out color processing：By color painting colored printing is carried out on souvenir badge, coin surface；Then rolling word and intaglio are carried out：Using
Method typefounding on edge silk tooth that base cake is rolled or rolled after casting before casting, and by the principle of metal refractive power, in coin face
It is taken on embossment and concaves towards engraving；Finally carry out anti-fake processing：It is dark by using micro image treatment, fine figure line technology, laser
One or more in shadow technology and ultra micro engraving technology handle commemorative coin；Wherein thumbnail line technology is to utilize calculating
Machine Autocad makes micro text, letter or pattern, is inscribed, is passed through on coin mold using laser engraving machine
Molding and embossing process steps make these thumbnail lines be transferred on coin product；Wherein fine figure line technology is to utilize optical principle,
By laser-engraving technique, the figure line of outlet, item combination, including ground-tint, embossment, group are designed and produced in combination with special-purpose software
The anti-counterfeiting technologies such as flower, stealth.
Embodiment five：
In example IV, following processes are added：
Step（4）Middle laser shadow technology utilizes high-precision laser engraving machine, carries out laser sandblasting effect in mold bottom surface first
It makes, then carries out the laser shadow of different levels or effect in the sand blasted surface of bottom surface（Figure line or word）Engraving, show compared with
For hidden figure line effect.
Mirror surface treatment is carried out first：Stringent polishing treatment is carried out by the surface to production mould and base cake, makes production
The commemorative coin surface gone out obtains the flatness and finish of height, keeps the contrast of its pattern and bottom surface more strong, level is more
Clearly；Then blasting treatment is carried out：Commemorative coin is made to the selected pattern certain applications mesh number of the production mould for needing to use not
Same sand grains is injected into frosting to selected bottom surface or pattern, forms solidifying white effect, the three-dimensional sense and layer of increase coin face figure line
Secondary sense；Wherein blasting craft includes uniform sandblasting, gradual change sandblasting, multi-level sandblasting, regurgitates sand, decorative grid sandblasting etc.；Instead
Blasting craft is locally to take bright technique in former embossment or word sandblasting part, has Manual mold polishing and chemical mould to throw
Two methods of light increase the expressive force in coin face, wherein multi-level blasting craft is the sandblasting effect using different meshes；Then
Carry out color processing：By color painting colored printing is carried out on souvenir badge, coin surface；Then rolling word and intaglio are carried out：Using
Method typefounding on edge silk tooth that base cake is rolled or rolled after casting before casting, and by the principle of metal refractive power, in coin face
It is taken on embossment and concaves towards engraving；Finally carry out anti-fake processing：It is dark by using micro image treatment, fine figure line technology, laser
One or more in shadow technology and ultra micro engraving technology handle commemorative coin；Wherein thumbnail line technology is to utilize calculating
Machine Autocad makes micro text, letter or pattern, is inscribed, is passed through on coin mold using laser engraving machine
Molding and embossing process steps make these thumbnail lines be transferred on coin product；Wherein fine figure line technology is to utilize optical principle,
By laser-engraving technique, the figure line of outlet, item combination, including ground-tint, embossment, group are designed and produced in combination with special-purpose software
The anti-counterfeiting technologies such as flower, stealth；Wherein laser shadow technology utilizes high-precision laser engraving machine, carries out laser in mold bottom surface first
Sandblasting effect makes, then the laser shadow of different levels or effect is carried out in the sand blasted surface of bottom surface（Figure line or word）Engraving,
Show more hidden figure line effect.
Thumbnail line is transferred on coin product by the present invention by using thumbnail line technology, to reach raising product
The purpose of anti-counterfeiting performance, by using fine picture and text technical finesse, the anti-fake form combined completely with lines with point, performance
Go out the types of patterns such as abundant curve, thickness, candlestick chart, the technology anti-counterfeiting performance is higher, uses general common software, electrical fire
The modes such as flower processing and laser scanning can not forge, by using laser shadow technology, precision of the technology to laser engraving machine
And technical parameter is more demanding, fake producer is difficult to copy at present, can not circulate, be only used for solve noble metal commemorative coin
Collection, the poor problem of anti-counterfeiting performance compared with negotiable common commemorative coin and currency.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of processing method of noble metal commemorative coin, it is characterised in that：Include the following steps：
（1）Mirror surface treatment：Stringent polishing treatment is carried out by the surface to production mould and base cake, makes the commemorative coin produced
Surface obtains the flatness and finish of height, keeps the contrast of its pattern and bottom surface more strong, level is more clearly demarcated；
（2）Blasting treatment：Commemorative coin is made to the different sand of the selected pattern certain applications mesh number of the production mould for needing to use
Grain is injected into frosting to selected bottom surface or pattern, forms solidifying white effect, increases the three-dimensional sense and stereovision of coin face figure line；
（3）Color processing：By color painting colored printing is carried out on souvenir badge, coin surface；
（4）Roll word and intaglio：Using the method typefounding on edge silk tooth rolled after base cake rolling before casting or casting, and by gold
The principle for belonging to refractive power, takes on the embossment in coin face and concaves towards engraving；
（5）Anti-fake processing：By using micro image treatment, fine figure line technology, laser shadow technology and ultra micro engraving technology
In one or more commemorative coin is handled.
2. a kind of processing method of noble metal commemorative coin according to claim 1, it is characterised in that：The step（2）In
Blasting craft include uniform sandblasting, gradual change sandblasting, multi-level sandblasting, regurgitate sand, decorative grid sandblasting etc..
3. a kind of processing method of noble metal commemorative coin according to claim 2, it is characterised in that：The anti-blasting craft
It is locally to take bright technique in former embossment or word sandblasting part, has Manual mold polishing and chemical mould to polish two kinds of sides
Method increases the expressive force in coin face, wherein multi-level blasting craft is the sandblasting effect using different meshes.
4. a kind of processing method of noble metal commemorative coin according to claim 1, it is characterised in that：The step（4）In
Thumbnail line technology is to make micro text, letter or pattern using computer aided design software, is existed using laser engraving machine
It is inscribed on coin mold, by molding and embossing process steps, these thumbnail lines is made to be transferred on coin product.
5. a kind of processing method of noble metal commemorative coin according to claim 1, it is characterised in that：The step（4）In
Fine figure line technology is that outlet, item are designed and produced in combination with special-purpose software by laser-engraving technique using optical principle
The anti-counterfeiting technologies such as the figure line of combination, including ground-tint, embossment, group's flower, stealth.
6. a kind of processing method of noble metal commemorative coin according to claim 1, it is characterised in that：The step（4）In
Laser shadow technology utilizes high-precision laser engraving machine, carries out laser sandblasting effect in mold bottom surface first and makes, then in bottom surface
The laser shadow of different levels or effect is carried out in sand blasted surface（Figure line or word）Engraving shows more hidden figure line effect
Fruit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810766120.0A CN108790560A (en) | 2018-07-12 | 2018-07-12 | A kind of processing method of noble metal commemorative coin |
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| CN201810766120.0A CN108790560A (en) | 2018-07-12 | 2018-07-12 | A kind of processing method of noble metal commemorative coin |
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| CN201810766120.0A Pending CN108790560A (en) | 2018-07-12 | 2018-07-12 | A kind of processing method of noble metal commemorative coin |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848570A (en) * | 2018-12-31 | 2019-06-07 | 沈阳造币有限公司 | Laser blasting method applied to noble metal commemorative coin |
| CN109940275A (en) * | 2018-12-31 | 2019-06-28 | 沈阳造币有限公司 | The laser blasting method of coin die is commonly commemorated in the sustainable punching press of high frequency time |
| CN109968850A (en) * | 2019-01-31 | 2019-07-05 | 上海造币有限公司 | A kind of high speed positioning color printing production method of metal coin stamp |
| CN110757001A (en) * | 2019-11-06 | 2020-02-07 | 浙江星淦科技有限公司 | Preparation method of micron-sized laser-engraved anti-counterfeiting planar gold stamping plate |
| CN111016511A (en) * | 2019-11-11 | 2020-04-17 | 深圳国宝造币有限公司 | Method for hiding feature code on precious metal commemorative coin or badge and commemorative coin or badge |
| CN111109782A (en) * | 2019-12-24 | 2020-05-08 | 上海造币有限公司 | Anti-counterfeiting nickel-coated steel coin and manufacturing process thereof |
| CN112440609A (en) * | 2020-11-24 | 2021-03-05 | 北京航星机器制造有限公司 | Method and equipment for instantly manufacturing souvenir badge |
| CN114770059A (en) * | 2022-03-31 | 2022-07-22 | 上汽通用五菱汽车股份有限公司 | Manufacturing process of mold with horn meshes |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848570A (en) * | 2018-12-31 | 2019-06-07 | 沈阳造币有限公司 | Laser blasting method applied to noble metal commemorative coin |
| CN109940275A (en) * | 2018-12-31 | 2019-06-28 | 沈阳造币有限公司 | The laser blasting method of coin die is commonly commemorated in the sustainable punching press of high frequency time |
| CN109968850A (en) * | 2019-01-31 | 2019-07-05 | 上海造币有限公司 | A kind of high speed positioning color printing production method of metal coin stamp |
| CN109968850B (en) * | 2019-01-31 | 2021-08-03 | 上海造币有限公司 | High-speed positioning color printing manufacturing method of metal coin and stamp |
| CN110757001A (en) * | 2019-11-06 | 2020-02-07 | 浙江星淦科技有限公司 | Preparation method of micron-sized laser-engraved anti-counterfeiting planar gold stamping plate |
| CN110757001B (en) * | 2019-11-06 | 2021-06-29 | 浙江星淦科技有限公司 | Preparation method of micron-sized laser-engraved anti-counterfeiting planar gold stamping plate |
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Application publication date: 20181113 |