CN102488366B - Nickel-coated steel coin with double-face hidden pattern, and manufacturing technology thereof - Google Patents
Nickel-coated steel coin with double-face hidden pattern, and manufacturing technology thereof Download PDFInfo
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- CN102488366B CN102488366B CN201110429378.XA CN201110429378A CN102488366B CN 102488366 B CN102488366 B CN 102488366B CN 201110429378 A CN201110429378 A CN 201110429378A CN 102488366 B CN102488366 B CN 102488366B
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Abstract
The invention discloses a nickel-coated steel coin with a double-face hidden pattern, and a manufacturing technology thereof. The coin has a steel-cored nickel-plated material. At a same position of the nickel-coated steel coin, two different hidden patterns can be observed. When observed at a certain angle, the two hidden patterns are invisible. The manufacturing technology comprises steps that: a double-face hidden pattern is designed at a same position on a coin draft by using computer-aided software; the manufactured double-face hidden pattern draft is converted into a carving profile by using CAM software; the double-face hidden pattern is carved on a mould by using a high-precision computer carving machine; the original mould is pressed into an impression mould with a multi-time rollover-pressing method; and the nickel-coated steel coin with the double-face hidden pattern is impressed by using the manufactured mould. With the manufacturing technology provided by the invention, an application of the technology on a coin with a steel-cored nickel-plated material is realized for a first time. The technical content of the coin is improved; the falsification difficulty of the coin is improved, and a good artistic expression is provided for the coin.
Description
Technical field
The present invention relates to the anti-counterfeiting technology of coin and coin, specifically a kind of nickel-coated steel coin and manufacture craft thereof with double-face hidden pattern.
Background technology
Double-side hidden engraving is exactly after adopting CAD that two kinds of different patterns are processed, to show respectively that metal surface carries out the technology of dual pattern engraving, by high-accuracy computer engraving machine, two kinds of different patterns is carved in and in a figure, produces two kinds of different visual effects.Its concrete principle is zigzag two sides, carves respectively two kinds of patterns, thereby produces stealthy visual effect.If the first pattern is carved in zigzag left surface, the second pattern is carved in right flank, and when light or point of observation are during from zigzag from left to right, what can see is only the first pattern like this, otherwise from right to left time, also only can see the second pattern.
In current world coin circulation system, on five one hundred days units of Japan and 50 yuan two, Taiwan Albatra metal-coin circulation, adopt double-side hidden engraving technology, on the coin circulation of steel core nickel plating material there are no application, this is mainly because steel core nickel plating material hardness is high compared with copper alloy, in double-side hidden engraving figure line forming process, the degree of depth loss of figure line is larger, and then affect the definition of double-side hidden engraving figure line, therefore, the degree of depth that how to guarantee double-side hidden engraving figure line in moulding process is also key point and the difficult point of making this coin, therefore, in steel core nickel plating material, apply double-side hidden engraving technology and there is larger technical difficulty, with the immediate prior art of the present invention be CN1706663A.
Summary of the invention
The object of the present invention is to provide a kind of nickel-coated steel coin and manufacture craft thereof of applying double-side hidden engraving technology, after enforcement, popular anti-counterfeiting performance and the appearance of nickel-coated steel coin are all promoted largely.
The object of the present invention is achieved like this:
Have a nickel-coated steel coin for double-face hidden pattern, this coin is steel core nickel plating material, can observe two kinds of different stealthy figure lines at the same position of nickel-coated steel coin, observes at a certain special angle, and two kinds of stealthy figure lines are all invisible.
The manufacture craft of described nickel-coated steel coin: this process using is carried out the mode of dual pattern engraving in metal surface produces different visual effects by different combination of patterns in a figure, specifically comprises following flow process:
A) double-face hidden pattern is in zigzag two sides, carving respectively two kinds of patterns forms, adopt a certain position design double-face hidden pattern of computer aided design software at coin, its zigzag kerve spacing is 0.1～0.5mm, zigzag kerve angle is 30～120 °, and the kerve angle of stealthy figure line is 15～90 °;
B) adopt CAM engraving software to convert double-face hidden pattern original text to engraving file, it is 0.01～0.09mm that double-side hidden carving depth is set, and the carving depth of zigzag kerve is 0.01～0.10mm;
C) adopt computer engraving machine or laser engraving machine engraving grand master pattern, adopt the mode repeatedly turning over to turn over die, on base cake, impress out the nickel-coated steel coin with double-face hidden pattern by marking press.
Accompanying drawing explanation
Fig. 1 is fabrication processing figure of the present invention;
Fig. 2 is nickel-coated steel coin schematic diagram of the present invention;
Fig. 3 is that mould of the present invention turns over location schematic diagram.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
1) in Fig. 1, the a certain position design double-face hidden pattern on coin design picture proof by CASE(Computer Aided Software Engineering) AutoCAD and Type3, zigzag kerve spacing is 0.1～0.5mm, and zigzag kerve angle is 30o～120o, and the kerve angle of stealthy figure line is 15o～90o.
2) in Fig. 1, by CAM software, Artcam converts double-side hidden picture proof to engraving file, and set the zigzag kerve degree of depth is 0.01～0.1mm simultaneously, and the kerve degree of depth of stealthy figure line is 0.01～0.09mm.
3), in Fig. 1, engraving file is imported in computer engraving machine and carries out grand master pattern engraving.
4) in Fig. 1, because the hardness of nicke-clad steel material is higher, in moulding process, the loss of double-face hidden pattern wants large with distortion compared to other coin material, in order to reduce loss and the distortion of double-face hidden pattern in moulding process, adopt the mode repeatedly turning over to turn over die, there is not loss in the degree of depth of guaranteeing double-face hidden pattern on die and figure line does not deform, specifically the die after once turning over is carried out to vacuum softening annealing, its annealing process is: vacuum drying oven is heated to 860 ℃, be incubated 2 hours, then cool to room temperature with the furnace.
5) in Fig. 3, to reduce the die of hardness again again with turning over once after grand master pattern aligned pattern, because a kind of nickel-coated steel coin figure line degree of depth with double-face hidden pattern is more shallow, therefore, turn in process at secondary, figure line contraposition on figure line and grand master pattern on die is difficulty comparatively, for guaranteeing again to turn in process, there is not deviation in the figure line on die, in the time turning over for the first time, on grand master pattern, having set five positioning ports positions, die after once turning over is after soft annealing like this, carrying out secondary while turning over, grand master pattern just can overlap completely with the figure line on die.After secondary turns over, the figure line on die turns over more clear fullly like this, and the loss of double-face hidden pattern is just less with distortion, thereby, can guarantee the definition of double-face hidden pattern on nicke-clad steel product.
In Fig. 3, Reference numeral 5 is grand master pattern, and Reference numeral 6 is the upper figure line of grand master pattern, and Reference numeral 7 is the positioning port on grand master pattern, and the degree of depth of positioning port is 0.1mm～1mm, and length is 2mm～3mm, and width is 0.5mm～1mm.
5) in Fig. 1, adopt the die turning over to impress on the base cake of nicke-clad steel material by marking press, produce the nickel-coated steel coin with double-face hidden pattern feature.
Embodiment
Consult Fig. 2, by computer aided design software, design square hole and two kinds of double-face hidden patterns of hexagon, observe from the top down or from bottom to top, can see square hole or hexagon at the same position of nickel-coated steel coin, observe in positive vertical direction, two kinds of stealthy figure lines are all invisible.
In Fig. 2, coin body 1 is nicke-clad steel material, and square hole 2 is a kind of pattern, hexagon 3 is another kind of pattern, and the degree of depth of zigzag kerve 4 is 0.08mm, and angle is that 110 ° of spacing are 0.25mm, composition square hole and hexagonal kerve degree of depth are 0.06mm, and angle is 50 °, and spacing is 0.25mm.
Claims (3)
1. a nickel-coated steel coin with double-face hidden pattern, is characterized in that: the material of this coin is steel core electronickelling, and at the same position of coin, different visual angles can be seen different stealthy figure lines or can't see stealthy figure line.
2. coin according to claim 1, is characterized in that described double-face hidden pattern is personage, figure or ramage.
3. a manufacture craft for nickel-coated steel coin described in claim 1, is characterized in that this process using carries out the mode of dual pattern engraving in metal surface, and different combination of patterns is produced to different visual effects in a figure, specifically comprises following flow process:
A) double-face hidden pattern is in zigzag two sides, carving respectively two kinds of patterns forms, adopt a certain position design double-face hidden pattern of computer aided design software at coin, its zigzag kerve spacing is 0.1～0.5mm, zigzag kerve angle is 30～120 °, and the kerve angle of stealthy figure line is 15～90 °;
B) adopt CAM engraving software to convert double-face hidden pattern original text to engraving file, it is 0.01～0.09mm that double-side hidden carving depth is set, and the carving depth of zigzag kerve is 0.01～0.10mm;
C) adopt computer engraving machine or laser engraving machine engraving grand master pattern, adopt the mode repeatedly turning over to turn over die, on base cake, impress out the nickel-coated steel coin with double-face hidden pattern by marking press; Wherein:
The described coin figure line degree of depth is more shallow, turn in process at secondary, figure line contraposition on figure line and grand master pattern on die is difficulty comparatively, for guaranteeing again to turn in process, there is not deviation in the figure line on die, in the time turning over for the first time, on grand master pattern, setting five positioning ports positions, die after once turning over is after soft annealing, and carrying out secondary while turning over, grand master pattern can overlap completely with the figure line on die; After secondary turns over, the figure line on die turns over more clear fullly, and the loss of double-face hidden pattern is less with distortion.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110429378.XA CN102488366B (en) | 2011-12-20 | 2011-12-20 | Nickel-coated steel coin with double-face hidden pattern, and manufacturing technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110429378.XA CN102488366B (en) | 2011-12-20 | 2011-12-20 | Nickel-coated steel coin with double-face hidden pattern, and manufacturing technology thereof |
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| CN102488366A CN102488366A (en) | 2012-06-13 |
| CN102488366B true CN102488366B (en) | 2014-05-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108464587A (en) * | 2018-03-21 | 2018-08-31 | 深圳市金宝盈文化股份有限公司 | A kind of hard gold process of illusion-colour jewelry piece |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108477781A (en) * | 2018-03-21 | 2018-09-04 | 深圳市金宝盈文化股份有限公司 | A kind of reverse mould technique of illusion-colour jewelry piece |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1706663A (en) * | 2004-06-08 | 2005-12-14 | 中国印钞造币总公司 | Technological process of making coin with multiple-surface concealed engraving |
| CN1830681A (en) * | 2006-04-21 | 2006-09-13 | 中国印钞造币总公司 | Manufacturing method of metal surface multiple latent image and antifalse product made by said method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5406264A (en) * | 1994-04-18 | 1995-04-11 | Sensormatic Electronics Corporation | Gaming chip with magnetic EAS target |
| CN1206577C (en) * | 2002-09-26 | 2005-06-15 | 中国印钞造币总公司 | Method of forming changeable optical image on metal surface and thus made product |
| CN100425741C (en) * | 2004-03-08 | 2008-10-15 | 中国印钞造币总公司 | Surface protection process for copper, aluminium alloy, steel-cored nickel coin and medal |
| CN1830692A (en) * | 2006-04-21 | 2006-09-13 | 中国印钞造币总公司 | Dynamic hidden antifalse pattern and its manufacturing method |
| CN101147630A (en) * | 2006-09-21 | 2008-03-26 | 中国印钞造币总公司 | Optical changeable pattern coin and manufacturing method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1706663A (en) * | 2004-06-08 | 2005-12-14 | 中国印钞造币总公司 | Technological process of making coin with multiple-surface concealed engraving |
| CN1830681A (en) * | 2006-04-21 | 2006-09-13 | 中国印钞造币总公司 | Manufacturing method of metal surface multiple latent image and antifalse product made by said method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108464587A (en) * | 2018-03-21 | 2018-08-31 | 深圳市金宝盈文化股份有限公司 | A kind of hard gold process of illusion-colour jewelry piece |
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| CN102488366A (en) | 2012-06-13 |
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Address after: 200061 No. 17 Guangfu West Road, Shanghai, Putuo District Patentee after: SHANGHAI MINT Co.,Ltd. Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Address before: 200061 No. 17 Guangfu West Road, Shanghai, Putuo District Patentee before: SHANGHAI MINT Co.,Ltd. Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |