초록 ▼

The invention relates to a method for producing a penetrator (10) from a tungsten heavy metal with a high fraction of tungsten and an outer sheath (7), which consists of a material that is more ductile in relation to the penetrator core (6). To produce a penetrator (10) of this type in a cost-effect

The invention relates to a method for producing a penetrator (10) from a tungsten heavy metal with a high fraction of tungsten and an outer sheath (7), which consists of a material that is more ductile in relation to the penetrator core (6). To produce a penetrator (10) of this type in a cost-effective manner, according to the invention a twin-hopper filling device, which corresponds to the dimensions of the penetrator core (6), is introduced concentrically into a compression mold (1) that corresponds to the outer dimensions of the penetrator (10). The inner pipe (3) is filled with a first tungsten powder blend with a high fraction of tungsten for producing the penetrator core (6), while the annular gap between the outer wall of the inner pipe and the inner wall of the compression mold (1) is filled with a second tungsten powder blend with a lower fraction of tungsten, (approximately between 85% and 91%), than the first powder blend. Once the inner pipe (3) has been removed from the compression mold (1), the powder blend is then compressed in the known manner to produce the penetrator (10), the compressed body is subsequently sintered and cold-formed and the penetrator slug is finally finished.

대표청구항 ▼

1. A method for producing a penetrator made of a tungsten heavy metal core with a high tungsten fraction and having an outer sheath composed of a more ductile material compared to the penetrator core, comprising the steps of: concentrically inserting an inner pipe adapted to dimensions of the penetr

1. A method for producing a penetrator made of a tungsten heavy metal core with a high tungsten fraction and having an outer sheath composed of a more ductile material compared to the penetrator core, comprising the steps of: concentrically inserting an inner pipe adapted to dimensions of the penetrator core into a compression matrix adapted to exterior dimensions of the penetrator;placing a double funnel filling device adapted to the dimensions of the penetrator core on the compression matrix;filling the inner pipe only with a first powder mixture containing tungsten with a tungsten fraction between 90 wt.-% and 97 wt.-% using the double funnel filling device so that only the first powder mixture is in the inner pipe;filling an annular space located between an outer wall of the inner pipe and an inner wall of the compression matrix using the double funnel filling device with a second powder mixture containing tungsten with a tungsten fraction between 85 wt.-% and 91 wt.-% that is less than the tungsten fraction of the first powder mixture;subsequently removing the double funnel filling device and the inner pipe from the compression, matrix; andsubjecting the entire powder mixture to preliminary compacting and hydrostatic compression so that the penetrator core is connected to the sheath by a transitional area having a thickness between 25 μm and 200 μm. 2. The method according to claim 1, wherein the first powder mixture containing tungsten contains 95 wt.-% tungsten and a remainder of the first powder mixture is composed of nickel and cobalt powder. 3. The method according to claim 2, wherein the nickel and cobalt powder in the first powder mixture has a weight ratio of nickel to cobalt between 2:1 and 10:1. 4. The method according to claim 3, wherein the nickel and cobalt powder in the first powder mixture has a weight ratio of 9:1. 5. The method according to claim 2, wherein the second powder mixture containing tungsten contains 87 wt.-% tungsten and a remainder of the second powder mixture is composed of nickel and cobalt powder. 6. The method according to claim 5, wherein the nickel and cobalt powder in the first powder mixture has a weight ratio of nickel to cobalt between 2:1 and 10:1. 7. The method according to claim 1, wherein the second powder mixture containing tungsten contains 87 wt.-% tungsten and a remainder of the second powder mixture is composed of nickel and cobalt powder. 8. The method according to claim 7, wherein the nickel and cobalt powder in the first powder mixture has a weight ratio of nickel to cobalt between 2:1 and 10:1. 9. The method according to claim 8, wherein the nickel and cobalt powder in the first powder mixture has a weight ratio of 9:1.