DE102007045723A1 - Gun barrel in lightweight construction - Google Patents

Abstract

Proposed is a weapon barrel (1) consisting of a metallic tube (2) and a plastic matrix (4) and a chamber (7), wherein between the tube (2) and the matrix (4) a thermal insulation layer (3) at least in the front Area (5) of the gun barrel (1) is involved. A temperature derivation from the front tube region (5) into the rear region (6) takes place through the tube (2) itself.

Description

at various weapons / weapon types is often a weight reduction sought. We u. a. achieved by the weapon barrel made of a ceramic composite or the metallic weapon barrel is wrapped, for example, with glass fiber reinforced Material. The gun barrel has a lower pipe wall thickness on. In combination with the fiber reinforced material leads this then to a weight reduction of the barrel.

From the CH 682 843 A5 For example, a ceramic composite tube for firearms and the method for its production are known. The ceramic composite pipe is made of fiber sections made of fiber-reinforced material. The fiber sections are connected together at their ends and the sliver wound helically into a tube.

An aluminum tube with wrapping describes the US 5,285,592 A , From the US 5,915,937 A is a metallic barrel wrapped with a composite known. The EP 0 862 721 B1 claims a gun barrel with fiber-reinforced plastic and metal as well as the corresponding method of making the gun barrel.

A weapon barrel, in which a winding of individual fiber materials is provided around a metal tube serving as a bullet runway, also publishes the DE 199 59 147 A1 , The fiber material or the embedding mass, in which the fiber material is embedded, in this case contain a component which influences the thermal expansion.

An internal composite material for a gun barrel reveals the DE 692 103 T2 ( EP 0 517 593 B1 ).

A fiber reinforced rifled barrel barrel is out of the DE 691 16 787 T2 ( EP 0 479 746 B1 ) derivable.

Also from the US 5,214,234 A known barrel has a metallic barrel with a directly attached layer.

A multi-layer weapon tube also describes the US 5,856,631 A , The same subject for small caliber deals with the WO 99/37966 A2 ,

With a suitable material pairing weight-reduced gun barrel with better heat dissipation characteristics and consistent precision is the DE 101 12 254 C1 ,

The Wraps or layers serve for receiving or for discharging the heat from the barrel. Especially with GRP windings, which contain a resin in the carbon fibers lead to high Temperatures to damage the windings.

The Invention sets itself the task of a gun barrel in lightweight construction specify, which no longer has the aforementioned disadvantage.

Of the Invention is based on the idea of a temperature transition to avoid from the gun barrel on a wrap. This will be a Thermal isolation between the two involved. This thermal barrier coating, For example, a ceramic, is applied to the steel pipe by means of thermal Application method, preferably applied high-speed flame spraying. Through the separation layer, the temperature is maintained in the pipe and not as known about the winding dissipated. On top of this ceramic separation layer is then the composite material / layer / matrix Applied to the material reduced gun barrel in the material reduced Stabilize areas.

The Cartridge chamber, in the area where high pressures occur will be executed as usual. A wrapping with thermal insulation layer is included in the area (s) in which lower pressures occur, so preferably at the front of the gun barrel. The temperature dissipation takes place through the rear area (cartridge chamber), in the known always the higher temperatures occur.

Around To ensure the discharge is the tube thickness at the front or in the front of the gun barrel so to choose that a derivative of the temperature purely constructive over the tube is to the rear, d. H. through / over the pipe itself. On additional ways to derive the temperature can thus be dispensed with.

The new gun barrel is characterized by a composite of steel-ceramic composite. It is weight-reduced and therefore ideal for fast shooting or goals. It is intended for use with weapons from a caliber of 30 mm, whereby smaller caliber weapons tubes are constructed so can.

Based an embodiment with drawing, the invention be explained in more detail.

It shows the only figure a gun barrel 1 consisting of a metallic tube 2 , For example, made of steel, a ceramic layer applied thereto 3 and a plastic matrix ( 4 ), for example a GRP matrix, in the front area 5 , In the back area 6 there is a cartridge chamber 7 from steel.

At the ceramics 3 is, for example, circonium oxide, which by suitable Verfah is applied to the steel. The ceramics 3 Due to its surface properties it offers good adhesion for the composite matrix 4 at the barrel 1 ,

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• CH 682843 A5 [0002]
• - US 5285592 A [0003]
• US 5915937A [0003]
• - EP 0862721 B1 [0003]
• - DE 19959147 A1 [0004]
• - DE 692103 T2 [0005]
• - EP 0517593 B1 [0005]
• - DE 69116787 T2 [0006]
• EP 0479746 B1 [0006]
• - US 5214234 A [0007]
• US 5856631 A [0008]
• WO 99/37966 A2 [0008]
• - DE 10112254 C1 [0009]

Claims (5)

Gun barrel ( 1 ), consisting of a metallic tube ( 2 ) and a plastic matrix ( 4 ) and a cartridge warehouse ( 7 ), characterized in that between the tube ( 2 ) and the matrix ( 4 ) a thermal insulation layer ( 3 ) at least in the front region ( 5 ) of the weapon barrel ( 1 ) is involved. Weapon tube according to claim 1, characterized in that the tube ( 2 ) a steel tube and the matrix ( 4 ) are a GRP matrix. Gun barrel according to claim 1 or 2, characterized in that a rear area ( 6 ) on the weapon barrel ( 1 ), but at least the chamber ( 7 ) without the thermal insulation layer ( 3 ). Weapon tube according to one of claims 1 to 3, characterized in that the thermal insulation layer ( 3 ) is a ceramic. Gun barrel according to claim 4, characterized that the ceramic is a circonium oxide.