PROCESS FOR PREPARATION AND USE OF INORGANIC MARKERS FOR SECURITY IDENTIFICATION/MARKING ON EXPLOSIVES, FUSES AND AMMUNITION AFTER DETONATION AND ON FIREARMS AND METAL PROJECTILES, PRODUCTS OBTAINED AND PROCESS OF INSERTING MARKERS ON EXPLOSIVES, FUSES AND AMMUNITION AND ON FIREARMS AND METAL PROJECTILES

Abstract

With respect to an unprecedented process of preparation of inorganic fluorescent markers under the action of infrared light, for identification and marking, by a specific insertion process, in explosives, fuses, ammunition after detonation, as well as the identification and marking of steel and metal alloys of firearms and metal projectiles an improvement includes the physical insertion of the markers in the channel and in the crucible of the pig iron production process; in this improved process, marking was carried out in the ratio of 1 part of the marker to 1,325,750 parts per mass of pig iron.

Claims

1. (canceled)

2. A method for preparation and use of inorganic markers for security identification and/or marking on explosives, fuses and ammunition after detonation and on firearms and metal projectiles, including products obtained and a process of inserting markers on explosives, fuses, ammunition, firearms and metal projectiles, comprising: materials capable of generating visible colors when excited in the infrared region, which are used to determine the origin of explosives, fuses and ammunition, even after detonation, as well as in weapons and metal projectiles, prepared using a solid-state reaction method in which the inorganic oxides are mixed according to the desired stoichiometric proportions to obtain LaNbO4 (Mark 1), BiVO4, Sr3V2O8 and YNbO4 (Mark 2) that are respectively doped with rare-earth ions erbium and ytterbium, holmium and ytterbium, holmium and ytterbium and thulium and ytterbium, which are mechanically inserted in explosives and ammunition by cementation and forging in weapons and metal projectiles, having the physical insertion of the markers in the channel and in the crucible of the pig iron production process, further comprising physical insertion of marking in the ratio of 1 part of marker to 1,325,750 parts per mass of pig iron.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] To assist in the understanding, the following figures are attached:

[0013] FIG. 1: shows the view of the marker insertion process in the pig iron batch, where the addition of the marker occurred directly in the channel and in the crucible, which shows that the insertion of the marker practically does not cause modification in the pig iron production process;

[0014] FIG. 2: view of the collection sample in the marked pig iron crucible; after marking different pig iron batches, samples were removed that were tested to later confirm whether it would be possible to observe the presence of a marker.

[0015] FIG. 3: shows the view of the verification tests of the marking on the pig iron sample in the ratio of 1 part of marker to 1,325,750 parts per mass of pig iron; said test was done using a laser pen, where the green color that is characteristic of the marker used in the tests was observed (Mark 1);

[0016] FIG. 4: shows the view of the marker spectrometry diagram, where the diagram of the upconversion fluorescence spectrum using benchtop laser in the range of 450 to 600 nm, obtained for one of the marked pig iron samples compared to the pure Mark 1 spectrum; further showing that the emission profiles are practically the same, proving the presence of the marker in the pig iron sample.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The PROCESS FOR PREPARATION AND USE OF INORGANIC MARKERS FOR SECURITY IDENTIFICATION/MARKING ON EXPLOSIVES, FUSES AND AMMUNITION AFTER DETONATION AND ON FIREARMS AND METAL PROJECTILES, PRODUCTS OBTAINED AND PROCESS OF INSERTING MARKERS ON EXPLOSIVES, FUSES AND AMMUNITION AND ON FIREARMS AND METAL PROJECTILES object of this application for an addition of invention, refers to an improvement that is based on results of pig iron marking tests, which showed that the markers registered in patent BR 11 2021 001378 4 can be used in the marking of this material, since it was possible to observe during the tests the colors green (Mark 1) and blue (Mark 2) when the pig iron samples were excited with infrared.

[0018] These colors are characteristic of the aforementioned markers and can only be observed when the tagged material is excited with specific wavelength infrared, which prevents counterfeiting and can be used for traceability of the tagged product.

[0019] Therefore, the improvement carried out in BR 11 2021 001378 4 consists of the physical insertion of the markers in the channel and in the crucible of the pig iron production process; in this improved process, marking was carried out on the ratio of 1 part of marker to 1,325,750 parts per mass of pig iron.

[0020] It is worth noting that the methodology for applying the markers did not cause any change in the production system, productivity or quality of the pig iron that was marked, and the dilution used reached less than 1 part per million. Thus, it is clear that the markers can be used in the marking and identification of the pig iron.