NL9202169A - MASS PROJECTILE. - Google Patents

Description

Short designation: Mass projectile

The invention relates to a mass projectile with an penetration core and a control body attached to the penetration core.

In known mass projectiles, in particular with undersized wing stabilized mass projectiles (projectiles provided with a drive cage), the e.g. heavy metal penetration core and the wing bearing steel and aluminum control body are a screw connection connected to each other.

The manufacture of such connections is relatively expensive, since two threads have to be produced. In addition, a screw connection results in a reduction of the load-bearing cross-sectional area in this range. Particularly when using penetrating cores of relatively brittle heavy metal, this can lead to breaking off of the control body screwed to the penetration core (in particular, also warn that the control body is relatively heavy, e.g. of steel).

The object of the invention is to develop a mass projectile of the type mentioned in the preamble, the production costs of which are considerably lower than those of known projectiles.

This object is achieved according to the invention by the measures mentioned in the characterizing part of claim 1. Advantageous embodiments are disclosed in the subclaims.

The invention is essentially based on the idea that for the production of mass projectiles the penetration core is not to be connected to the control body by means of a screw connection, but to provide a friction welding connection between the two. Such a connection is not only cheaper, but also provides a more loadable cross-sectional area compared to a screw connection.

It is admittedly already known from DE-GM-8438298.8 and from DE-A1-3532411 to connect ammunition parts by means of friction welding. However, this known method involves welding parts of the probe sleeve or of the probe sleeve with other ammunition parts, wherein - unlike in the invention - the weld seam is not placed in highly stressed areas. The invention is not only about replacing a screw connection by a welding connection, but the welding provides a reliable connection with respect to a screw connection in a heavily loaded part of the penetration core, since the loadable cross-section is increased. Such an idea cannot be deduced from the two documents mentioned above.

Further details and advantages of the invention are described below with reference to an exemplary embodiment, which embodiment is shown in the single figure. In this figure, 1 indicates an undersized mass projectile, which essentially consists of an penetration core 2, a projectile tip 3 and a handlebar 1 body 4. The friction welding joint according to the invention is indicated by the reference numeral 5.

The penetration core 2 and the control body 4 should preferably consist of the same material, in particular steel, so that a cheap friction welding connection is ensured. However, it has been found that different materials can also be welded together. The following table shows the possible material combinations of penetration core and control body:

Control body: Tnriri nglrAT-n ♦

Steel - fine casting Steel steel Steel

Aluminum Steel

Steel - fine casting WSM

Murtunium alloys WSM

Titanium WSM

A control body consisting of wings as well as a control body consisting of openings or slit cone, which is used in particular for training projectiles, is suitable as control body 4.

In the friction welding process, the control body 4 and the penetration core 2 are positively connected to enragr by the occurring warning effect. The friction welding seam protruding after the welding process is subsequently removed by turning.

The method described above can be used particularly advantageously to convert conventional combat ammunition into practice ammunition. For this purpose, the control body of the combat ammunition (usually a winged control body) is first separated from the heavy metal penetration core (e.g. tungsten - heavy metal (WSM)) used in combat ammunition. Then a new cone control body is connected to the WSM penetration core by friction welding. Such a method therefore offers the possibility of converting the large stocks of combat ammunition into practice ammunition in a simple manner.

Claims (4)

1. Mass projectile with a penetration core and a control body attached to the penetration core, characterized in that the penetration core and the control body are connected to each other by friction welding. Mass projectile according to claim 1, characterized in that the control body is a slit cone control body. Mass projectile according to claim 1 or 2, characterized in that the tungsten heavy metal (WSM) penetration core and the control body are made of aluminum alloy, steel-cast or titanium. Mass projectile according to claim 1 or 2, characterized in that the penetration core is made of steel and the control body is made of steel, aluminum or a steel-cast.