Method to apply marking system on inner surface of gun barrel

FIELD: weapons and ammunition.

SUBSTANCE: method consists in application of marking elements that indent a bullet onto an inner surface of a rifled gun barrel. The difference consists in application of marking elements on the inner surface of the rifled gun barrel by firing a bullet with previously applied marking elements.

EFFECT: definite identification of a rifled gun using a bullet with application of previously applied marking elements.

3 cl

 

The invention relates to the design and production of a piece of firearms and can be used for marking barrel rifled small arms manufactured in small batches.

Well-known classical method for identifying a rifle (Kustanovich S.D. Forensic ballistics. - M.: Legal literature, 1956, p.24-27). According to a known method carried out comparing two bullets and two sleeves, one of which obviously westralian of the test weapons, and the second is presumably westralian of the test weapons. The comparison is carried out, in General, the number and width of traces of the fields of the grooves of the bullet, the direction and angle of inclination, and also by comparing the appearance of the shells, their typical scratches and defects. In addition, compare the shape and size of the individual tracks, the configuration of the projections and depressions, as well as their mutual arrangement, i.e. the elements inherent in the individual barrel and chambered rifle.

The disadvantage of this method should recognize the need for the expert ballista firearms (or bullets or shells)that can be used as an element of comparison. In their absence, the examination cannot be performed.

Also known construction the barrel (RU, patent 2148769, 2000), containing navorina the surface of the inorganic marking coatings ensure the implementation of a set of microelements in the side surface of the bullet when passing it on to the target during the shot, allowing by chemical analysis of the surface of the bullet, and surfaces that came into contact with the bullet after firing, to determine the qualitative and quantitative composition of the established elements and, therefore, the barrel of the weapon from which a shot was fired.

This system of marking trace elements unsuitable for identification barrels of weapons, because there is currently not known how accurate deposition on the inner surface of the inorganic coating, in addition, in this embodiment, the weapon cannot be identified by empty sleeve.

Also known construction barrel rifle (RU, patent 2212609, 2003). There is a construction barrel rifle contains on its inner surface, at least one marking element, leaving the shot on the pool traces that can be identified as individual code of the trunk, and as specified marking element used field between adjacent grooves whose width different from the width of other fields, and change the width ranges from 2.8 to 5.7% of the width of the field, defined as the difference between the circumference of the barrel and the total width of the grooves, the fact is owned by a number of fields.

A disadvantage of the known design of the barrel rifles admittedly small number of weapons that can be marked up in this way without sacrificing ballistic performance of the weapon.

The closest analogue of the proposed technical solutions can be recognized as the method of applying identification marks on the barrel rifled weapons (US, 4175346, 1979). Proposed to be applied to the inner surface of the barrel rifled weapons additional marking elements, leaving traces on the pool, which can be identified as individual characteristics of the barrel rifled weapons.

A disadvantage of the known designs should recognize the noise impact of the additional marking elements on ballistic weapons.

The technical problem to be solved by the developed invention is to provide opportunities for marking rifled and smooth-bore weapons, preferably produced in small batches.

The technical result in the implementation of the design is to ensure the identification of rifles and shotguns by the pool by using the previously applied marking elements that do not affect ballistic performance.

This technical result is achieved by applying to GNC the interior surface of the barrel marking system moreover, the deposition is carried out by implementation shot by a bullet, which previously caused the marking system. Preferably the marking system applied to the portion of the surface of the bullet, which when moving the trunk touches the inner surface of the barrel. The thickness of the layer system is approximately of 5.0-7.0 μm. It is at such a thickness is not yet the distortion of the results of the shot, but the inner surface of the barrel implemented a significant number of members of marking system. As the marking system can be used in the system of the three metals, deposited on the surface of the bullet and obtain reliable results using neutron activation analysis. As the marking system can also be used, which contains at least three of the radioactive isotope selected from the group consisting of69With,55Fe210Pb63Ni and90Sr, the use of which provides a reliable result by using the method of radioactive indicators.

With the passage of the bullet coated with the marking system on the barrel (rifled or smoothbore) is the transfer marking system on the surface of the bore with at least partial vigani the m marking system in the surface of the bore. In the subsequent shot part marking system will move from the surface of the bore to the surface of the bullet. Identifying different methods of instrumental analysis traces marking system for this pool, it is possible to identify with certainty the barrel of the gun from which the bullet was westrelin.

Hereinafter the invention will be discussed using different implementations.

1. The bullet of the gun PMM method of vacuum deposition using vacuum post struck a composition of 3 metals, of a thickness of 5.0 μm, containing calcium, vanadium and chromium. The half-lives of their radioactive isotopes respectively 164 day, 16,1 days and 27.8 days. The composition applied composition depends on the composition of the target, from which the produced spray, as well as from the target temperature. Practically the number of combinations of the three metals indefinitely. The coating obtained was fixed on the surface of the barrel method of heating. Upon delivery to the customer of the gun made a control shooting, during which partially marking system goes to the inner surface of the barrel. Because the various elements in the transition from the surface of the bullet on the surface of the barrel behave differently, depending on the degree of retention element on the surface of the bullet, used bullet can be netnorth is about used for marking barrels, every time applying on the inner surface of another of marked trunk new (quantitatively) a combination of elements. Additionally, he fired a shot from this gun PMM. Surface vystradannoe bullet analyzed using neutron activation analysis with getting the part identification system elements. The results made in the filing Cabinet. Further, upon detection of the bullets used an instance of the weapon can be set in the analysis of their surface by the method of neutron activation analysis and comparison of the obtained results with the data stored in the card file.

2. On the surface of a bullet intended for firing from a machine gun "bison" caliber 9 mm caused by an electroplating coating composition of metals with a thickness of 6.0 μm, containing iron, Nickel and strontium, which includes appropriate radiotracers. The shot on the inner surface of the barrel is left of a specified composition together with radioactive isotopes. The composition applied composition depends on the composition of the electrolyte, which made the application, and the process conditions. Practically the number of combinations of the three metals indefinitely. The coating obtained was fixed on the surface of the barrel method of heating. In the rest of repeated about is erali example 1 to obtain a marking composition system.

The proposed method will allow marking of newly manufactured and existing instances of weapons. The lack of sophisticated equipment used for marking, and for its reading, leads to simplification of the process of marking and to simplify the registration process luminescense signal to make the conclusion about the use of specific weapons. The possibility of changes in the composition of the mixture of substances can virtually do not limit the number of marked units.

1. The method of applying a marking labels on the inner surface of the barrel of rifles, including the application of the inner surface of the barrel rifled weapons of marking elements, leaving traces on the pool, characterized in that the printing on the inner surface of the barrel rifles marking elements carried by the implementation shot by a bullet, which previously caused the marking elements.

2. The method according to claim 1, characterized in that the marking elements applied to the portion of the surface of the bullet, which when moving the trunk touches the inner surface of the barrel.

3. The method according to claim 1, characterized in that the thickness of a layer deposited on a bullet marking elements is 5.0-7.0 µm.



 

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