One embodiment of the present invention provides a polymeric ammunition having a metal injection molded primer insert.

One embodiment of the present invention provides a polymeric ammunition having a metal injection molded primer insert.

One embodiment of the present invention provides a polymeric ammunition cartridge and methods of making and using the same. The cartridge includes a substantially cylindrical insert connected to a substantially cylindrical polymeric middle body. The substantially cylindrical insert includes a top surface opposite a bottom surface and a substantially cylindrical coupling element that extends from the bottom surface, a primer recess in the top surface that extends toward the bottom surface, and a flange that extends circumferentially about an outer edge of the top surface. The substantially cylindrical polymeric middle body includes a substantially cylindrical polymeric bullet-end and a substantially cylindrical polymeric coupling end connected by a powder chamber, wherein the substantially cylindrical polymeric coupling end contacts the substantially cylindrical coupling element.

One embodiment of the present invention provides a polymeric ammunition cartridge and methods of making and using the same. The cartridge includes a substantially cylindrical insert connected to a substantially cylindrical polymeric middle body. The substantially cylindrical insert includes a top surface opposite a bottom surface and a substantially cylindrical coupling element that extends from the bottom surface, a primer recess in the top surface that extends toward the bottom surface, and a flange that extends circumferentially about an outer edge of the top surface. The substantially cylindrical polymeric middle body includes a substantially cylindrical polymeric bullet-end and a substantially cylindrical polymeric coupling end connected by a powder chamber, wherein the substantially cylindrical polymeric coupling end contacts the substantially cylindrical coupling element.

A system for metal injection and counter pressure has: a particle providing assembly; and a forming unit having a melting module, a counter pressure module and a mold module; wherein, the particle providing assembly provides particles with metal powder and a binding agent to the melting module, the particles is formed into melted flow by the melting module, the melted flow is provided to the mold module, the counter pressure module provides a counter gas with predetermined pressure to the mold module, the melted flow forms into a green part inside of the mold module.

A system for metal injection and counter pressure has: a particle providing assembly; and a forming unit having a melting module, a counter pressure module and a mold module; wherein, the particle providing assembly provides particles with metal powder and a binding agent to the melting module, the particles is formed into melted flow by the melting module, the melted flow is provided to the mold module, the counter pressure module provides a counter gas with predetermined pressure to the mold module, the melted flow forms into a green part inside of the mold module.

A plasticizing device includes a plasticizing mechanism including a feeding port for receiving a material and configured to plasticize the material to generate a melted material and a material feeding mechanism configured to feed the material to the plasticizing mechanism. The material feeding mechanism includes a housing including a depositing port communicating with the feeding port, the housing storing the material, and a rotating member housed in the housing and capable of rotating along an inner edge of the housing. A plurality of through-holes are provided in the rotating member at intervals along an outer circumference of the rotating member. When the rotating member rotates and any one of the plurality of through-holes and the depositing port communicate, the material stored in the housing is fed from the feeding port to the plasticizing mechanism through the depositing port.

A plasticizing device includes a plasticizing mechanism including a feeding port for receiving a material and configured to plasticize the material to generate a melted material and a material feeding mechanism configured to feed the material to the plasticizing mechanism. The material feeding mechanism includes a housing including a depositing port communicating with the feeding port, the housing storing the material, and a rotating member housed in the housing and capable of rotating along an inner edge of the housing. A plurality of through-holes are provided in the rotating member at intervals along an outer circumference of the rotating member. When the rotating member rotates and any one of the plurality of through-holes and the depositing port communicate, the material stored in the housing is fed from the feeding port to the plasticizing mechanism through the depositing port.

A cutting implement including a metal substrate, carbide edge(s), and coating is provided. The coating is zirconium PVD (ZrCRTiNO), which provides protection against corrosion of the metal substrate. In some instances, the zirconium PVD provides protection from corrosion for at least 200 hours. A layer of carbide can be added to one or more cutting edges of the metal substrate prior to the deposition of the coating. The carbide increases the sharpness of the cutting edges and therefore increases the life or longevity of the cutting edges. Thus, a combination of zirconium PVD (ZrCRTiNO) as a coating and carbide edges on a metal substrate can increase the life of the metal substrate by providing increased hardness, sharpness, and anti-corrosive properties.

Titanium-based compositions as well as titanium composites such as carbide-reinforced titanium composites are disclosed herein. More specifically, composite materials comprising a titanium metal matrix and titanium carbide dispersed in the matrix are disclosed. The composite materials comprise about 0.5 wt. % to about 3.0 wt. % of carbon, based on the total weight of titanium and carbon in the composite materials. Compositions comprising a titanium-based powder and at least one of a carbon-based material and a binder are also disclosed. The compositions comprise about 0.5 wt. % to about 3.0 wt. % of carbon-based material, based on the total weight of the titanium-based powder and the carbon-based material.