RU2254551C1 - Bullet slug - Google Patents

Abstract

FIELD: ammunition.

SUBSTANCE: the bullet slug is made of a hard-alloy material and consists of a tail section and a head ogival-pointed section. The hard-alloy material has a compression strength of more than 4000 Mpa, the angle at the head top makes up 90 to 1200 deg., and the head top is rounded off with a radius of (0.2 to 0.6)mm.

EFFECT: enhanced piercing effect of the bullet.

1 dwg, 1 tbl

Description

The invention relates to the field of military equipment, mainly can be used for machine gun cartridges and machine guns.

Known armor-piercing bullet, in which the head of the carbide core is made pointed (RF patent 2150077).

A disadvantage of the known solution is the low penetration ability of the core, due to the presence of an acute angle at the top of the core.

Known armor-piercing bullet containing a steel and lead core, and the head part of the steel core is made of high strength steel with NRC _e > 60 in the form of a cone with an angle at the apex of 50-90 ° (RF patent No. 2133441).

A disadvantage of the known solution is the low penetration ability of the core, due to the presence of an acute angle at the apex of the core and the material of the head of the core, which does not provide the destruction efficiency of the material being pierced.

Also known is an armor-piercing bullet containing a shell, a carbide core and a lead jacket, while the carbide core may be pointed or have a flat end (RF patent No. 2135940).

A disadvantage of the known solution is also the low penetration ability of the core.

A known disadvantage is eliminated by a technical solution in which it is proposed to use a carbide material having a compressive strength of more than 4000 MPa and having an apex angle of 90 ° to 120 ° as the core material, and this angle is rounded with a radius (0.2-0, 6) mm.

An increase in the breakdown ability of the core is achieved by increasing the stresses in the material to be pierced, which is affected by a core made of carbide material with a compressive strength of more than 4000 MPa. The rounding angle at the top of the head also affects the increase in the penetration ability of the core, as this increases the strength of the top. The specified tensile strength and the angle at the apex are determined experimentally, the experimental results are shown in the table.

The essential features characterizing the claimed invention:

restrictive - a core made of carbide material, consisting of a tail and a head parts, the head part having a lively shape with an apex;

distinctive - carbide material is selected on the basis of ensuring compressive strength of more than 4000 MPa, the angle at the head is selected from the range of 90-120 ° and rounded with a radius of (0.2-0.6) mm.

The drawing shows the design of the inventive core, where α is the angle at the top of the head.

The tail part 1 of the core is made in the form of a cylinder or close to the cylinder. The head part 2, having a lively shape, is associated with the tail part. The head part is equipped with a peak with an angle from 90 ° to 120 ° and is rounded with a radius of (0.2-0.6) mm. The core is made of a material having a compressive strength exceeding 4000 MPa. Such material may be, for example, VK-6, VK-3.

The table shows the results of experiments confirming an increase in the breakdown ability of the core.

The experiment was carried out in comparison with armor-piercing bullets currently used by the armed forces of the Russian Federation, namely bullets with a 7N24 carbide core. As punched material used bulletproof vest 6B12.

Firing range The percentage of destruction of the punched material under equal conditions Core 7N24 The inventive core with the value of the angle of sharpening 140 ° <α <180 ° α = 130 ° α = 120 ° α = 105 ° α = 90 ° α = 80 ° 1 3 4 5 6 7 8 nine 50 meters 96 100 100 100 100 100 100 100 meters 93 100 100 100 100 100 100 150 meters 55 92 96 100 100 100 94 200 meters 10 86 92 100 100 100 88 250 meters - 76 85 92 95 88 82 VK6 250 meters - - - 98 - 96 - VK6M 250 meters - - - 100 - 100 - VK4V 250 meters - - - 100 - 98 - VKZ 250 meters - - - 100 - 95 -

The compressive strength of materials:

VK6 - 4817 MPa

VK6M - 4307 MPa

VK3 - 4189 MPa

VK4V - 4032 MPa

As can be seen from the results of the experiment, the best indicators of the percentage of destruction of the punched material in a bullet with a core made of VK6M material having a compressive strength of 4307 MPa and with an apex angle of 90 ° to 120 °.

Claims (1)

Bullet core made of carbide material and consisting of a tail part and a head part having an animated shape with a top, characterized in that the carbide material has a compressive strength of more than 4000 MPa, the angle at the top of the head part is from 90 to 120 °, and the top of the head is rounded with a radius of 0.2-0.6 mm.