CN1280449C - Method of making hard alloy punching mould - Google Patents
Method of making hard alloy punching mould Download PDFInfo
- Publication number
- CN1280449C CN1280449C CN 200410021632 CN200410021632A CN1280449C CN 1280449 C CN1280449 C CN 1280449C CN 200410021632 CN200410021632 CN 200410021632 CN 200410021632 A CN200410021632 A CN 200410021632A CN 1280449 C CN1280449 C CN 1280449C
- Authority
- CN
- China
- Prior art keywords
- line
- die
- corrosion
- need
- cemented carbide
- 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.)
- Expired - Fee Related
Links
Abstract
The present invention provides a method of manufacturing a hard alloy stamping die. In the method, at least one-time plate burning corrosion is carried out on the surface of a die with the need of pattern manufacture, namely that photosensitive emulsion is coated on the surface of the die with the need of pattern manufacture; then, a soft pattern piece which is designed by a computer and manufactured by a laser typesetter is put on the surface; the pattern is dried and manufactured on the die in the mode of exposure; the photosensitive emulsion on positions with the need of corrosion is washed down in water; the photosensitive emulsion on positions without the need of corrosion is left to form a protective layer; the die is heated and aged at least 200 DEG C for at least 10 minutes, and then, corroded by a corrosive agent. The method can shorten a die manufacture period, reduce the cost, especially manufacture anti-counterfeiting patterns of cryptomorphic patterns, miniature characters, etc. and improve anti-counterfeiting capability of various circulated metal coins, seals and other product with patterns formed by stamping.
Description
Technical field:
Present method and punching press circulation metal coin, chapter or adopt the making of the used cemented carbide punching mold of the anti-counterfeiting product of other materials of drawing relevant.
Background technology:
The sintered-carbide die manufacturing process of metal coin, Zhang Hangye is continued to use mechanical cutting always and is finished the figure line and process heat treatment technics again.The false proof skill of design sculptor exquisiteness and the high-accuracy processing units of mainly depending on of metal coin, chapter.Design and make efficiency have improved greatly at the three-dimensional carving machine of early seventies appliance computer control in the country of coinage technology prosperities such as America and Europe, but aspect false proof, do not make a breakthrough.On the contrary, because popularizing of this equipment provides more convenient forgery means to the tamperer.For tackling the forgery that is becoming increasingly rampant, that the Designers has developed in recent years is special-shaped, double-colored, helical teeth, limit portion roll false proof process such as word, has effectively improved the anti-counterfeit capability of metal coin.Mints such as Spain, Singapore, Japan have been developed in succession and have been adopted mechanical engraving technology or laser sculpture technology to be manufactured with gold and silver coin, the currency of stealthy figure line, have checked spreading of forging greatly.China's coinage industry has also tentatively been grasped this technology at present.Its ultimate principle is to carve a kind of figure line again as latent type figure line on the inclined-plane of finishing the foundation drawing line of engraving (figure line indentation) ditch trough rim.But because mechanical engraving technology or laser sculpture technology do not reach the technology difficult problem of circulation coin to the requirement and the scale operation of invisible graph and the anti-circulation of micro text on the carving depth of lines and precision, so, still fail to be applied widely in the coinage industry.
Summary of the invention:
The objective of the invention is in order to overcome the deficiency of above-mentioned technology, provide a kind of and can shorten the Mold Making cycle, reduce cost, particularly improve the method for making cemented carbide punching mold of the anti-counterfeit capability of various circulation metal coin, chapter.
The object of the present invention is achieved like this:
The inventive method comprises carries out at least printing down corrosion to the die surface that needs the construction drawing line; the surface-coated polyvinyl alcohol that promptly needs the construction drawing line at mould; dry back is placed on it with the figure line film that designs; by Exposure mode the figure line is shone on mould; (promptly develop by washing; use ordinary tap water) will need the polyvinyl alcohol at recessed position to wash out; the polyvinyl alcohol that needs to protrude the position then stays; at least 10 minutes high temperature ageings of heating are handled under at least 200 ℃ of temperature; adopt etching reagent that it is corroded; can shine by high-strength light; time shutter can adopt 20 minutes; the glue of exposed portion is attached to die surface; form water-fast; corrosion resistant protective layer, the metallic surface is not exposed in the flushing of the part water of exposure, according to the width of picture and text lines; the degree of depth is selected printing down corrosive number of times; the corrosive degree of depth depends on corrosive time length, and polyvinyl alcohol not only plays photosensitization but also shields.
Above-mentioned Heating temperature is 200 ℃～300 ℃.
In the above-mentioned corrosion process, etching reagent is selected nitric acid or hydrochloric acid or sulfuric acid or chromic acid or Indian red for use, at the hardness of press tool, selects different etching reagent.
Above-mentioned method adopts the coating agent which has to be dissolved in alcohol before use of dissolve with ethanol to be coated in the figure line surface that has etched in corrosion process, it is protected, and then the figure line that needs to deepen, widen is partly corroded again.
Above-mentioned in the press tool that machines with mechanical engraving or laser carving method, the printing down corrosion processing is carried out on no figure line plane, produced with combination goes out to have more the figure line of false proof characteristics.As make and conceal type pattern, microfilm of characters or other pattern.
Adopt the inventive method that press tool is processed, can on being hard press tool more than the HRC65 degree, hardness produce the exquisite figure line that contains latent type pattern or microfilm of characters, the degree of depth of figure streakline bar is in 0.005～0.5mm scope, and the word height (being as the criterion with Chinese phonetic alphabet) of microfilm of characters can be less than 0.30mm.
Present method can hard-tempered mould carries out secondary processing to processing also with traditional mechanical engraving method, erodes away recessive figure line, micro text and other decorative patterns with chemical method, produces to have traditional art style and modern false proof characteristics novel die.When making punching die, can adopt present method to finish whole patterns separately, can be to replenish with present method again on the mould after mechanical engraving or laser sculpture are finished to make other figure lines also at physical method, circulation coin or souvenir badge that the die stamping of two kinds of technology making comes out, under angle is 45 ° or 90 ° of irradiate light, can observe and hide the figure line, observe with 5～8 times magnifying glasses, microfilm of characters is clear debates.Improve the anti-counterfeit capability of product greatly.
Adopt the inventive method to produce and produce and have unique figure line that contains latent type pattern or microfilm of characters, figure streakline bar is the thinnest can to reach 0.008mm, the circulation gold and silver that the degree of depth can be selected in 0.005mm～0.5mm scope (or other metals) coin or souvenir badge.The inventive method can shorten the Mold Making cycle, reduces cost, and particularly can produce the press tool of the anti-counterfeit capability that improves various circulation metal coin, Zhanghe other products.
Description of drawings:
Fig. 1 commemorates silver coin test mould synoptic diagram for the relax celebration of rolling off the production line of Tianjin Toyota prestige.
Embodiment:
Fig. 1 commemorates silver coin test mould synoptic diagram for the relax celebration of rolling off the production line of Tianjin Toyota prestige.Sequence number 1,2,3 represents that respectively the printing down etching process is made part, part, printing down etching process making part are made in traditional artistic carving among the figure.
This mould is to adopt present method to finish stealthy figure line again after Wimet steel die (the machine engraving part) quenching of having adopted traditional technology to complete at grand master pattern, and the following process of microfilm of characters etc. forms.Its manufacture craft is as follows:
With the stealthy figure line of computer special anti-counterfeiting software design and other word graph lines.The figure line is that three parts are formed: the first layer figure line is Toyota's mark
The second layer is Toyota's mark literal " TOYOTA ", and the 3rd layer is the interference figure line.Wherein the first layer figure line and second layer figure line winding displacement angle are respectively: 45 degree and 135 degree angles.
1, with laser photocomposing machine output positive film.
2, pva coating polyvinyl alcohol on grand master pattern, oven dry is close to mould with film, exposes with intense light source (Iodine gallium light that the printing printing down is used).
3, water flushing die surface, the sensitization part does not come off naturally.
4, mould is placed the baking box internal heating of temperature more than 200 ℃ more than 15 minutes.
5, with mould side and the back side and carved part with coating agent which has to be dissolved in alcohol before use coating protection.
6, with etching machine mould is repeatedly corroded, the most shallow microfilm of characters part was corroded 2 minutes approximately, and stealthy figure line etching time is 5 minutes, and " TOYOTA " literal etching time is 10 minutes.Repeatedly corrosive the time, be coated with protection with corroding part.Etching reagent is selected nitric acid (also can select hydrochloric acid or sulfuric acid or chromic acid or Indian red for use) for use.
7, use alcohol wash, check that rear surface chromium plating gets final product.
Claims (5)
1; make the method for cemented carbide punching mold; it is characterized in that this method is to carry out at least printing down corrosion at the die surface that needs the construction drawing line; the surface-coated polyvinyl alcohol that promptly needs the construction drawing line at mould; then designing with computer; placed on it by the figure line film that laser photocomposing machine is produced; with Exposure mode the figure line is shone on mould; to need the polyvinyl alcohol of corrosion location to wash out by washing; do not need the polyvinyl alcohol at corrosive position then to stay; form protective layer; under at least 200 ℃ temperature, carry out at least 10 minutes heat agings and handle, adopt etching reagent that it is corroded again.
2, the method for making cemented carbide punching mold as claimed in claim 1 is characterized in that Heating temperature is 200 ℃～300 ℃.
3, the method for making cemented carbide punching mold as claimed in claim 1 or 2 is characterized in that in the corrosion process, and etching reagent is selected nitric acid or hydrochloric acid or sulfuric acid or chromic acid or Indian red for use.
4, the method for making cemented carbide punching mold as claimed in claim 1 or 2; it is characterized in that: in corrosion process; adopt the coating agent which has to be dissolved in alcohol before use of dissolve with ethanol to be coated in the figure line surface that has etched, it is protected, and then the figure line that needs to deepen, widen is partly corroded again.
5, the method for making cemented carbide punching mold as claimed in claim 1 or 2, it is characterized in that in the press tool that machines with mechanical engraving or laser carving method, the printing down corrosion processing is carried out on no figure line plane, and produced with combination goes out to have more the figure line of false proof characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410021632 CN1280449C (en) | 2004-01-08 | 2004-01-08 | Method of making hard alloy punching mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410021632 CN1280449C (en) | 2004-01-08 | 2004-01-08 | Method of making hard alloy punching mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1556249A CN1556249A (en) | 2004-12-22 |
| CN1280449C true CN1280449C (en) | 2006-10-18 |
Family
ID=34351959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410021632 Expired - Fee Related CN1280449C (en) | 2004-01-08 | 2004-01-08 | Method of making hard alloy punching mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1280449C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443251C (en) * | 2005-09-22 | 2008-12-17 | 中国印钞造币总公司 | Method for making large-dimension holed memorial coin (medal) and die thereof |
| CN100433078C (en) * | 2006-01-13 | 2008-11-12 | 上海宝印金属彩涂有限公司 | Tin printing hidden antifake mark and producing method |
| CN101226334B (en) * | 2008-02-01 | 2013-03-27 | 南昌印钞厂 | Mirror plane erosion carving gravure technique |
| CN101419402B (en) * | 2008-11-21 | 2011-06-29 | 华中科技大学 | Method for making cemented carbide punching mold |
| CN101644897B (en) * | 2009-09-02 | 2011-11-16 | 中国印钞造币总公司 | Method for manufacturing nonwoven metal porous plate used for printing |
| CN101941292B (en) * | 2010-07-19 | 2012-12-19 | 模德模具(苏州工业园区)有限公司 | Texturizing equipment |
| CN103057290A (en) * | 2012-12-31 | 2013-04-24 | 湖北联合天诚防伪技术股份有限公司 | Metal coin thermoprinted with holographic anti-counterfeiting pattern and manufacturing method thereof |
-
2004
- 2004-01-08 CN CN 200410021632 patent/CN1280449C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1556249A (en) | 2004-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1280449C (en) | Method of making hard alloy punching mould | |
| CN101115627B (en) | Multi-layer body including a diffractive relief structure and method for producing the same and uses | |
| CN101419402B (en) | Method for making cemented carbide punching mold | |
| CN104011265A (en) | Metal surface and process for treating a metal surface | |
| CN106923458B (en) | Method of forming indicia on an article and article having indicia thereon | |
| CN102950952A (en) | Decorative housing and manufacturing method thereof | |
| RU2352470C1 (en) | Method for decorative modification of surfaces of coins, medals, tokens made of metals that are plastic during cold deformation or their alloys | |
| JP2006528917A (en) | Method for forming surface pattern with high resolution | |
| CN100410083C (en) | Method of making microimage on coin and souvenir badge | |
| CN101147630A (en) | Optical changeable pattern coin and manufacturing method thereof | |
| JP5852991B2 (en) | Decorative material manufacturing method and decorative material | |
| CN108032661B (en) | A kind of holography illusion-colour noble metal craftwork and its manufacturing method | |
| EP0287746B1 (en) | A method for producing a decorative surface structure with holographic or diffraction pattern | |
| CN108048841A (en) | A kind of nameplate processing method | |
| RU2570862C1 (en) | Method of producing of medals, coins and tokens out of metals or alloys plastic during cold working | |
| CN102488366B (en) | Nickel-coated steel coin with double-face hidden pattern, and manufacturing technology thereof | |
| CN100515802C (en) | Technological process of making coin with multiple-surface concealed engraving | |
| RU2169515C1 (en) | Coin manufacture method | |
| CN205767829U (en) | Holographic scraped information tracing anti-counterfeit package box | |
| CN103978798B (en) | A kind of blistering that embosses replaces the holographic false proof embossing version of holographic positioning bronzing | |
| RU2194427C2 (en) | Jewelry and decorative article manufacture method | |
| JP4699793B2 (en) | Decorative plate manufacturing method | |
| CN218100538U (en) | Double anti-counterfeiting structure based on diffraction optics and laser holography | |
| Aizawa et al. | Micro-/Nano-Texturing onto Plasma-Nitrided Tool Surface by Laser Printing for CNC Imprinting and Piercing. Micromachines 2022, 13, 265 | |
| CN111687599A (en) | Intelligent padlock shell structure process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061018 Termination date: 20170108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |