RU2657252C2 - Method for manufacturing a bar code for metal products - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: method comprises applying the main and individual bar codes with the corresponding digital codes in the space between which a non-reproducible metal matrix is permanently installed. Non-reproducible matrix is created by microarc oxidation using a plate electrode coated with a porous dielectric screen whose area is 10-15 times smaller than the surface area of the matrix, and the porous screen through which the electrolyte is passed is stochastically moved by a random number generator, wherein the information on the scale of the information removal from the non-reproducible matrix is added to the individual digital code.

EFFECT: invention relates to the individual marking of goods with increased reliability of protection of the marking against forgery.

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Description

The invention relates to individual labeling of goods with increased reliability of protection of markings from counterfeiting.

As an analogue, we can consider the classic barcode [1], which contains the main barcode and digital codes. However, such a barcode has low information security.

As a prototype, a method for manufacturing a barcode on a metal was selected by applying the main and individual barcodes with the corresponding digital codes and forming in the space between them an irreproducible matrix (picture) of metal installed in a conical ledge.

However, this method requires the use of expensive equipment to remove the arrangement of particles relative to each other. To save a complete information matrix of randomly located particles, it is necessary to store redundant information on a cloud service. Most enterprises do not have the above optical equipment, which narrows the scope of this technology.

In FIG. 1 depicts a prospective barcode on a metal. A method of manufacturing an individual barcode on metal is carried out by applying the main 1 and individual 2 barcodes with the corresponding digital codes 3 and 4 and forming in the space between them an irreproducible matrix 5 (picture) from the metal installed in the conical ledge and equipped with an information grid 6.

The proposed method of manufacturing an individual barcode on a metal is carried out by applying the main and individual barcodes with the corresponding digital codes and forming in the space between them an irreproducible matrix (picture) of metal installed in a conical ledge (a conical ledge is sometimes called a swallow’s socket, with which compressor blades are attached )

A feature of the proposed method can be recognized that the irreproducible matrix (picture) is created by microarc oxidation using a device equipped with an electrode and a porous screen through which liquid electrolyte is passed, and a voltage is applied between the future irreproducible matrix (picture) and a porous screen that is in size 10-15 times smaller than the surface of the future matrix, the screen is stochastically moved using a random number generator, and an individual digital code is added with information about asshtabe removing information from irreproducible matrix (picture).

In FIG. 2 schematically depicts a setup for creating an irreproducible matrix 5 with an information grid 6 (in this profile it is not visible), which is a future element of a barcode on a metal. Matrix 5 is the anode. As a cathode, a special movable device with a stainless steel plate 7 with an area of several square centimeters, covered with a porous dielectric screen 8, which stochastically move along the matrix 5 using a random number generator 9, is used. A gap is formed between the anode 5 and the cathode 7. In the presence of voltage between the irreproducible matrix 5 and the porous screen 8, the microarc oxidation mode is realized, in which stochastically scattered portions from microarc discharges are formed on the matrix. Microarc discharges form dark patches on irreproducible matrix 5, which are shown in more detail in Fig. 3 and fig. four.

An example of the implementation of method No. 1: For testing, a PT-3V alloy sheet with a thickness of 2 mm and an area of 3 tens of square centimeters, having a conical step shape in cross section, was used. As a cathode, a stainless steel plate with an area of several square centimeters was used. In this case, a relationship is fulfilled in which the size of the porous screen is 10-15 times smaller than the surface of the future matrix. With stochastic movement of the porous screen on the surface of the matrix, stochasticity of another mechanism is formed, which manifests itself even when the porous screen is stationary. An aqueous solution of Na ₃ PO ₄ 12 H ₂ O is used as the electrolyte. Pumping this electrolyte through an electrode and a porous screen with a flow rate of 4-7 liters and at a voltage of U = 190 V and a current density of 5-6A per square decimeter, the microarc oxidation process begins on the surface of the matrix. A processing time of 3-10 minutes is sufficient to obtain a given oxide layer on the matrix. After oxidation, the matrix is washed and dried. After that, the state of the matrix surface is scanned, and the matrix itself is installed indivisibly between the main and individual barcodes with the corresponding digital codes.

Information on the scale of taking information from an irreproducible matrix (picture) is also recorded in a digital code. For example, if an individual barcode after a slash has the number 20, then this means that the state of the matrix is entered into the database with a twenty-fold increase.

In fig. 3 shows a separate microarc cavity on the information grid 6. Its unique profile 3 (b), which has many identification features, can replace the set of nanoparticles used in the prototype.

A set of eight to ten microarc cavities on the information grid 6 allows you to create a model matrix 5, stored in the database.

In fig. 4 presents a three-dimensional image of the same microarc cavity on the matrix 5, shown in Fig. 3.

The expert level of verification of products with the proposed barcode is carried out by accessing the database of individual matrices 1, rigidly associated with an individual barcode. Any deviation from the location of the microarc cavities on the matrix from the model located in the database allows you to recognize a metal object with such a barcode as a counterfeit product.

Information sources

1. Global international system of commodity numbering.

2. Patent RU No. 2525107. A method of manufacturing a nanotechnological barcode for metal products.

Claims (1)

A method of manufacturing a barcode on a metal product, including applying the main and individual barcodes with the corresponding digital codes, in the space between which an irreproducible matrix of metal is permanently installed, characterized in that the irreproducible matrix is created by microarc oxidation using a plate electrode coated with a porous dielectric screen, the area size which is 10-15 times smaller than the surface area of the matrix, and a porous screen through which ktrolit stochastically moved by a random number generator, in this case in an individual digital code added to the information on the removal of the information from the scale irreproducible matrix.

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