RU2465794C1 - Method of decorative modification of coin surfaces, medals, tokens made of metals plastic in cold deforming or their alloys and product made by this method - Google Patents

Abstract

FIELD: personal use articles.

SUBSTANCE: method of decorative modification includes production of metal blank, refinement of its surface by cleaning and polishing, cold plastic deformation of the front and/or back surfaces by stamping on them of volume dull decor and adjacent to it flat mirror decor contrasting by class of texture and tone. The stamping of decors is performed on the locally placed site or sites of the surface. Along with stamping the decors on the outer edges of the local sites, stamping carry of projection or projections is carried out. From the side of lateral edge of the projection, opposite the edge of the projection adjacent to the local sites of decor made by plastic deformation on the surface or in the locally placed sites of the surface of the blank a mosaic decor is made. Before installation of the mosaic decor the sites of surface with volume and flat decors contrasting by class of texture and tone are masked. The product contains on its front and/or back surfaces the volume dull and flat mirror decors which at the local site or sites of the surfaces have projection along the outer contour. From the side of lateral faces of projection opposite its faces adjacent to local sites of volume and flat decors, on the surface or at the locally placed sites of the surface of the blank the mosaic decor is located.

EFFECT: increased efficiency of the method.

14 cl, 1 dwg

Description

Technical field

The invention relates to the production of numismatic, falleristic medals, coin and coin products and, in particular, to technological processes of decorative modification of surfaces of the indicated type of metal products to give them artistic and tezavratsionnoy attractiveness.

State of the art

Known technological processes for the manufacture of coins, medals, tokens, the surfaces of which are subjected to decorative modification to give them artistic and tezavratsionnoy attractiveness, including due to:

performing the basis of the coin with a recess in which a gold insert is pressed in (RU 2092093, A44C 21/00, publ. 10.10.97);

execution of the base metal of a coin from a noble metal (platinum), having a recess that is filled with a solution of another finishing metal - gold (patent JP 2732032 B2, A44C 27/00, publ. 25.04.01).

With these technological processes, the hoarding of products at a different cost than the nominal increases.

However, consumer demand for these products is limited, as It does not always meet the modern requirements of aesthetic appeal.

In patent RU No. 2194427, A44C 7/00, publ. December 20, 2002, a technological process for decorative modification of metal surfaces is proposed, in which the metal workpiece surface is refined by cleaning and polishing it, a varnish coating is masked locally - a mask, subsequent etching is carried out on the applied varnish coating of the decor with chemical etching of the metal in the zones, not covered by a mask, and electrochemical deposition of the finishing metal into the recesses of the decor to the level of the main surface, subsequent polishing of the surface Your product, including modified ones.

However, when implementing this technological process, the resulting decor has a two-dimensional design, and the refinement of the surfaces of products after coating the finishing material with polishing (in order to make the surfaces of the product glossy) leads to an increase in the waste of the finishing precious metal, and the cost of manufacturing products increases.

At the same time, in the industrial production of medals and coin-and-coin products, the technological process of decorative modification of their surfaces is widely implemented using the cold deformation process of product surfaces made of plastic metals or their alloys under the action of bodies with higher hardness. This technology for the production of medals and coin coins consists of:

in the manufacture of metal work, in the refinement of metal work surfaces by cleaning and polishing, in the cold plastic deformation of the front and / or reverse surfaces of the metal work by stamping on them contrasting in the class of roughness and tonality of the volumetric decor and adjacent flat decor, the lower and upper are used for plastic deformation press stamps made of hardened steels with negative images on their surfaces of executed decors (see, for example, informational materials rials of the Birmingham Mint (England), publ. 1997, author S.A.Mezon).

Products made by this process correspond to the quality of the proof or proof-like technology.

The characteristic features of the decorative modification of the surfaces of medals and coin products obtained by this technology are:

clear volumetric decor on the front and / or back surfaces of products;

pronounced specularity of surface areas with a flat decor;

contrast in the roughness and tonality classes of volumetric and flat decors;

absence of defects in the form of shells, scratches, etc. on the decoratively modified surfaces of products

For the manufacture of billets, metals that are plastic during cold deformation or their alloys, in particular gold, silver, their alloys, copper-nickel alloys, etc., are used.

However, the products obtained during the implementation of this process are characterized by a certain uniformity of the color palette, characteristic of the tonality of the metal used, which generally worsens the aesthetic expressiveness of the product and reduces consumer demand for them both in terms of art and thesaurus appeal.

To enhance the artistic and hoarding attractiveness of the products, various technical solutions are proposed (see patents RU No. 2352470, publ. 04/20/2009, 2213667, publ. 10.10.2003).

The technical solution according to patent No. 2352470 proposes a method for decoratively modifying the surfaces of medals, coin-and-coin products made of plastic during cold deformation of metals or their alloys, which implements the “proof” or “proof-like” technology, in which a volumetric decor or part it is applied a layer of noble metal, contrasting in tonality to the workpiece material.

With this method of surface modification, the artistic attractiveness of products does not always satisfy consumer demand for them.

In the technical solution to patent No. 2213667, when decoratively modifying products on their surfaces, mosaic decor is performed on the basis of metal plates mounted on the surface inlaid with glassy material of various color palettes. The installation of metal plates on the decorated surface is carried out using a binder with an adhesive base.

With this technological process, the aesthetic expressiveness of the decorated surfaces of the product is improved due to the color palette and the plasticity of the decor volumes.

This method is technologically limited when used in the process of obtaining medals and coin products of the quality technology "proof" or "proof-like".

As the closest analogue of the present invention, a technical solution was selected according to the method of decorative modification of the surfaces of coins, medals, tokens made of plastic during cold deformation of metals or their alloys, and a product made by this technology, which is presented in the information materials of the Birmingham Mint (England) publ. 1997, author S.A. Maison.

SUMMARY OF THE INVENTION

The technical result of the present invention is the expansion of technological capabilities of the process of decorative modification of the surfaces of coins, medals, tokens made of plastic during cold deformation of metals or their alloys by improving the color and plastic expressiveness of the decor obtained on their surfaces.

The technical result of the present invention is the improvement of the artistic expressiveness of the products while increasing their hoarding.

To solve the technical problem, a method is proposed for decorative modification of the surfaces of coins, medals, tokens made of plastic during cold deformation of metals or their alloys, which consists in the manufacture of metal work, in the refinement of metal work surfaces by cleaning and polishing, in cold plastic deformation of the face and / or reverse metal working surfaces by embossing on them contrasting in the class of roughness and tonality of the volumetric decor and adjacent to it For plastic deformation, the lower and upper press stamps are used, made of hardened steels with negative images on their surfaces of the executed decors, while embossing on the front and / or reverse surfaces of the workpiece contrasting in the roughness class and tonality of volumetric and flat decors is carried out locally located area or surface areas with simultaneous embossing on the outer contour of the indicated sections of the protrusion and from the side of the lateral edge of the protrusion opposite An anode of the protrusion adjacent to the local area and the areas of the decor performed by plastic deformation, on the surface or on locally located sections of the surface of the workpiece, mosaic decor is mounted using metal plates inlaid with colored glassy material; before mounting the mosaic decor, surface sections with contrasting roughness and tones of volumetric and flat decors mask.

In the present invention, a binder with an adhesive base is used to mount the metal plates of the mosaic decor.

In the present invention, when embossing decors and protrusions on the surface or surfaces of the workpiece, the rim is simultaneously embossed along the outer border of the metal blank.

In the present invention, when embossing the protrusions, they are given a trapezoidal shape with a smaller base on the outside of the decor.

In the present invention, the protrusion is embossed by a negative image in the lower and / or upper stamps with the contour shape of the side faces corresponding to the outer contour of the mounted mosaic decor.

In the present invention, the height of the protrusion does not exceed the height of the surround matte decor.

In the present invention, when plastic deformation occurs on a section or surface areas of a product to be mounted on a mosaic decor, the risks and labels are embossed at the same time to form the mounting areas of the metal plates of the mosaic decor.

In the present invention, the installation of the mosaic decor is carried out according to a pre-executed image of the drawing, its color palette and shape.

In the present invention, copper and / or alloys containing copper are used as material for metal plates, and enamel is used as a glassy material, the melting temperature of which does not exceed the melting temperature of the used plate materials.

In the present invention, woven or non-woven, or plastic materials, or jewelry varnishes, or a combination thereof, are used to mask decors.

In the present invention, a disk or plate with rectilinear or rectilinear curvilinear contours of side surfaces is used as metal blanks.

In the present invention, the protrusion or protrusions have a contour corresponding to the contour of the mosaic decor.

In the present invention, a volume of noble metal, contrasting in tonality to the workpiece material, is applied to volumetric decors or to part of them.

To solve the technical problem, a product is proposed, preferably a medal, coin, token, containing volume and flat decors contrasting in the class of roughness and tonality on the front and / or back of the product, while volume and flat decors are located on a local area or surface areas, having a protrusion along the external contour, from the side of whose side faces, opposite to its faces, adjacent to local areas of volumetric and flat decors, on the surface or locally located The surface of the workpiece has a mosaic decor in the form of plates with a glassy color coating.

In the present invention, the protrusion or protrusions have a contour corresponding to the contour of the mosaic decor.

When implementing the present invention, the technological capabilities of the process of decorative modification of the surfaces of coins, medals, tokens made of plastic during cold deformation of metals or their alloys are expanded, and the creation of a highly artistic thesauri-attractive product with improved ductility and color expressiveness is ensured, which provides:

using decorative proofing surfaces of quality technology "proof" or "proof-like";

the use of technology of mosaic decor with a color palette of the image during decorative modification of quality surfaces;

using decorative processes for surface modification of technological processes and techniques that synergistically combine the quality of "proof" or "proof-like" technology and a mosaic decor with a color palette.

In the analysis of the prior art, no technical solutions with a combination of features corresponding to the present invention and providing the result described above were found.

The above analysis of the prior art indicates that the claimed technical solution meets the criteria of the invention of “novelty”, “inventive step”.

The present invention can be industrially implemented using known technological processes, equipment and materials intended for the manufacture of coins, medals, tokens made of ductile metals during cold deformation of metals or their alloys.

As metal blanks for this type of product, flat disks and plates can be used, including rectangular or rectilinear curvilinear shapes with the appropriate choice of stamping and pressing equipment for these purposes.

The implementation of the invention

The invention is illustrated

a drawing showing a variant of the product in the form of a disk made in accordance with the technological process of the present invention.

To implement the invention, the following raw materials and processing equipment are used:

metal strips are used for the manufacture of metal blanks, preferably from metals such as silver, or metal alloys such as neulziber, tompak, etc .;

dies for cutting metal;

polishing machines, preferably tumbling type;

flushing baths and ultrasonic flushing units;

detergents, distilled water; ethanol; refined gasoline;

paints and varnishes that are used to protect the surfaces of jewelry;

a press with lower and upper stamps, in particular for technological processes intended for the manufacture of metal products having a disk shape;

other materials and equipment used for the manufacture of coins, medals, tokens;

made according to the technology described in patent RU No. 2213667, metal plates, preferably based on copper with a glassy material encrusted on their surface, preferably based on enamel. Variants of manufacturing metal plates based on copper alloys are also possible.

The use of copper or copper alloys as the basis for the manufacture of plates is most appropriate according to the conditions of the melting temperature of this metal or its alloys, exceeding the melting temperature of the enamel used, as well as according to the conditions of synergistic compatibility of the metal of the plates with the selected metal blanks used in the implementation of the present invention.

The choice of the shape and geometric dimensions of metal plates with glassy material is determined taking into account the artistic characteristics of the regular structure of the mosaic decor based on a pre-made image of the picture, its color palette and shape.

The method of decorative modification of the surfaces of coins, medals, tokens made of plastic during cold deformation of metals or their alloys is carried out using the following technological operations, techniques based on an example of manufacturing metal blanks in the form of a disk:

metal strips are made from strips of the corresponding metal (for example, tompak) using die cuts in the form of disks, the front and / or back surfaces of which are subjected to the decorative modification according to the invention;

carry out polishing of metal blanks using, for example, tumbling plants, in the drum of which there is a technical washing solution and filler, preferably in the form of pre-prepared, cleaned steel balls. The content of the filler and its dimensions are set according to the conditions of the technological process, providing the optimal polishing effect on the surface of the metal blanks without the formation of unacceptable defects on the polishing surfaces. Obtained after polishing the metal workpieces are dried, additionally cleaned of the remnants of technical detergents by washing them, for example, in an ultrasonic unit.

The process of polishing and cleaning surfaces of metal work is carried out before the technological operation of plastic cold deformation of metal work with embossing on its front and / or reverse surfaces of decors.

Plastic cold deformation of the metal workpiece with embossing on its front and / or reverse surfaces of the decors is carried out using a press having lower and upper stamps, between which a metal workpiece is placed in the corresponding mandrel. The basic design of the press with stamps is traditional. The stamps are made of hardened steels with a hardness exceeding the hardness of the workpiece metal. The working surfaces of the stamps are pre-prepared by performing negative decors on them, the positive of which during operation of the press is formed on the front and / or reverse surfaces of the metal blank. A variant is possible on the working surfaces of the stamps of both volumetric (three-dimensional) negatives of decors and two-dimensional (relief). Negative images of the executed decors on the surfaces of the stamps are performed in contrasts in the roughness class, which, with plastic deformation of the surfaces of the workpiece, provides positive results in the form of a volumetric matte decor and the adjacent flat mirror decor, contrasting in the class of roughness and tonality.

To prepare the working surfaces of the stamps, known technological processes are used, for example:

manual engraving of volumetric decors on the working surfaces of stamps from a two-dimensional drawing made by the designer;

preliminary preparation of gypsum or foundry molds with volumetric decors formed on them, which, using an engraving machine and software, are transferred to the working surfaces of the stamps;

processing the received negatives of decors using various means of polishing, grinding to give surfaces negatives decors, for example, dullness, semi-gloss with a roughness class, contrasting with the roughness class for flat undecorated stamp surfaces. When polishing stamp surfaces, sandblasting and / or polishing pastes are used.

During cold plastic deformation of metal blanks around the perimeter, they form a peripheral rim, and on the front and / or reverse surfaces they simultaneously emboss the positive decors in the form of a three-dimensional decor and the adjacent flat mirror field of the decor, which corresponds to the quality of the “proof” or “proof-like” technology ".

In the process of plastic cold deformation of metal workpiece, embossing of decors on the front and / or reverse surfaces of the present invention is carried out on a locally located area or areas with simultaneous embossing of the protrusion (or protrusions) along the external contour of the local section (or local sections).

Taking into account the placement of volumetric and flat decors on local parts of the metal workpiece surface, the protrusion (or protrusions) can be oriented to the edges of the rim or cover a local section or sections of decors along their perimeter.

The height of the protrusion (or protrusions), preferably, does not exceed the height of the volumetric matte decor, which is most optimal according to the attractiveness of the product design. In view of these requirements, the height of the peripheral rim formed during plastic deformation along the external contour of the metal blank is preferably not greater than the height of the protrusion (or protrusions).

The surfaces of the protrusion (or protrusions) and the rim during embossing preferably have a matte tonality and contrasting roughness relative to the mirror decor.

When embossing a protrusion (or protrusions) they are given a trapezoidal shape with a smaller base on the side of the outer surface of the decor. The trapezoidal shape of the protrusion is most optimal according to the technological requirements for the use of equipment for plastic deformation of the surfaces of the workpiece and for the conditions of use of a binder when installing a mosaic coating.

A negative image of the relief of the side faces of the protrusion (or protrusions) in the lower and / or upper stamps is performed in accordance with the relief of the external contour of the mounted mosaic decor, which improves the artistic expressiveness of the product.

On the side of the side faces of the protrusion (or protrusions), opposite the edges of the protrusion, adjacent to the local areas of the contrasting decor, a mosaic decor is mounted on the surface or locally located surface areas of the workpiece using metal plates inlaid with colored glassy material.

Installation of the mosaic decor is carried out according to a pre-executed image of the drawing, its color palette and shape.

Before mounting the mosaic decor, surface areas with volumetric and flat decors contrasting in the class of roughness and tonality, the surfaces of the protrusion and rim are masked.

To mask the decors use woven or non-woven, or plastic materials, or jewelry varnishes, or a combination of them. The choice of these materials is determined by the designer for the convenience of performing mosaic decor and preserving the quality of the proof or proof-like decor, performed with cold plastic deformation on the surface or surfaces of the product.

Preferably, the height of the mounted mosaic decor is not more than the height of the protrusion (or protrusions). It is possible to mount a mosaic decor in height exceeding the height of the protrusion, both on separate sections of the mosaic decor, and for this decor as a whole, which is determined by the design according to the previously executed image.

The parameters of the mosaic decor are taken into account when packaging the product in order to preserve the decor of the product of the quality “proof” or “proof-like” technology.

Embossing on the surface of the product of the protrusion (or protrusions) simultaneously with embossing on the front and / or reverse surfaces of the workpiece contrasting in the class of roughness and tonality of volumetric and flat decors provides the formation of sections of the surface of the workpiece for subsequent installation on them of a mosaic decor.

As a result of the implementation of the technological process according to the invention, the modified surfaces of the product during their cold plastic deformation have a “proof” or “proof-like” decor, synergistically compatible in artistic expression, plasticity with a mosaic decor made using metal plates inlaid with glassy color enamel.

To increase the tezavratsionnoy attractiveness of the products during the manufacturing process of their manufacture, a layer of precious metal, contrasting in tonality to the workpiece material, is applied to three-dimensional decors, including a protrusion and a rim, or to a part of these decors.

A product made according to the present invention, for example, when made in the form of a disk, has a peripherally located rim 1, a matte surround 2 and a flat mirror 3 decors, preferably on the front surface of the product. Volumetric 2 and flat 3 decors are located on a local surface area of the product, on the outer contour of which a protrusion 4 is made with a height, preferably not exceeding the height of the peripheral rim 1 and volumetric decor 2.

On the outer side of the protrusion 4 (on the side of the lateral edge of the protrusion, the opposite edge of the protrusion adjacent to the local and decor sections 2 and 3) on the surface of the product is a mosaic decor 5, which is made in the form of plates with a glass-like coating of various color palettes.

As a result of the described technological methods, the resulting product (medal, coin, token) has a three-dimensional decor with clear contours on the front and / or back surfaces with a roughness class of decor surfaces contrasting with the roughness class of the decor’s mirror fields, which corresponds to the artistic attractiveness of products of the “proof” quality or proof-like. The presence on the resulting product of the local zone of mosaic decor 6 made it possible to increase the artistic and hoarding attractiveness of the product, which is most favorable for the use of the corresponding products in the process of investing and collecting them.

The manufacturing process of the products of the present invention is industrially tested.

Claims (14)

1. The method of decorative modification of the surfaces of coins, medals, tokens made of plastic during cold deformation of metals or their alloys, which consists in the manufacture of metal work, in the refinement of metal work surfaces by cleaning and polishing, in cold plastic deformation of the front and / or reverse metal work surfaces by embossing they are contrasted in the class of roughness and tonality of the volumetric decor and the adjacent flat decor, with plastic deformation using lower and upper press stamps made of hardened steels with negative images on their surfaces of the executed decors are embossed, while embossing on the front and / or reverse surfaces of the workpiece contrasting in the roughness and tonality classes of volume and flat decors is carried out on a locally located section or surface sections with simultaneous embossing on the outer contour of these sections of the protrusion and from the side of the lateral edge of the protrusion, the opposite face of the protrusion adjacent to the local area s decoration made with plastic deformation on the surface or on portions located locally workpiece surface are mounted mosaic decor using metallic plates inlaid color vitreous material before assembly mosaics portions of the surface with contrasting with roughness and tone volume and flat decors camouflage. 2. The method according to claim 1, characterized in that for the installation of metal plates of mosaic decor using a binder with an adhesive base. 3. The method according to claim 1, characterized in that when embossing the decors and protrusions on the surface or surfaces of the workpiece, the rim is simultaneously embossed along the outer border of the metal blank. 4. The method according to claim 1, characterized in that when embossing the protrusions they are given a trapezoidal shape with a smaller base on the side of the outer surface of the decor. 5. The method according to claim 1, characterized in that the protrusion is embossed by a negative image in the lower and / or upper stamps with the contour shape of the side faces corresponding to the outer contour of the mounted mosaic decor. 6. The method according to claim 1, characterized in that the height of the protrusion does not exceed the height of the surround matte decor. 7. The method according to claim 1, characterized in that during plastic deformation on the site or surface areas of the product to be mounted on the mosaic decor, the risks and labels are embossed at the same time to form the mounting areas of the metal plates of the mosaic decor. 8. The method according to claim 1, characterized in that the installation of the mosaic decor is carried out according to a pre-executed image of the picture, its color palette and shape. 9. The method according to claim 1, characterized in that copper and / or alloys containing copper are used as the material for metal plates, and enamel is used as the glassy material, the melting temperature of which does not exceed the melting temperature of the used plate materials. 10. The method according to claim 1, characterized in that for masking the decors use woven or non-woven, or plastic materials, or jewelry varnishes, or a combination of them. 11. The method according to claim 1, characterized in that as the basis of metal work using a disk or plate with rectilinear or rectilinear curvilinear contours of the side surfaces. 12. The method according to claim 1, characterized in that a volume of noble metal, contrasting in tonality to the workpiece material, is applied to volumetric decors or to part of them. 13. The product, preferably a medal, coin, badge, containing volumetric matte and flat mirror decors on the front or / and the back side of the product, while volumetric and flat decors are located on a local area or on sections of surfaces having an external contour on the side of the side whose faces, opposite to its faces, adjacent to the local areas of volumetric and flat decors, on the surface or locally located sections of the surface of the workpiece is a mosaic decor in the form of plates with glassy color coating. 14. The product according to item 13, wherein the protrusion or protrusions have a contour corresponding to the contour of the mosaic decor.

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