A shaped charge assembly, comprising a casing and a liner, is disclosed. The liner includes a first longitudinal section connected to the casing, a second longitudinal section having the shape of a truncated cone wherein the truncated end thereof is directly connected, or connected by means of an intermediate longitudinal section, to the first longitudinal section. The second longitudinal section is at its base end directly connected to a third longitudinal section. The third longitudinal section is in the shape of a cone, an ogival or a hemisphere.

A shaped charge assembly, comprising a casing and a liner, is disclosed. The liner includes a first longitudinal section connected to the casing, a second longitudinal section having the shape of a truncated cone wherein the truncated end thereof is directly connected, or connected by means of an intermediate longitudinal section, to the first longitudinal section. The second longitudinal section is at its base end directly connected to a third longitudinal section. The third longitudinal section is in the shape of a cone, an ogival or a hemisphere.

Embodiments relate to a liner for a shaped charge. The liner includes reactive particles, each having two reactive materials which together are capable of undergoing an exothermic and/or intermetallic reaction. Additionally, embodiments may include non-reactive particles, which typically have a higher density than the reactive particles. The reactive particles may be configured to produce an exothermic reaction upon detonation of the shaped charge. In some embodiments, one of the reactive materials may be coated onto a core of the other reactive material, to form the reactive particle. In other embodiments, each reactive particle may be formed as a conglomerate of the two reactive materials. Shaped charges having liners and methods of formation are also disclosed.

Embodiments relate to a liner for a shaped charge. The liner includes reactive particles, each having two reactive materials which together are capable of undergoing an exothermic and/or intermetallic reaction. Additionally, embodiments may include non-reactive particles, which typically have a higher density than the reactive particles. The reactive particles may be configured to produce an exothermic reaction upon detonation of the shaped charge. In some embodiments, one of the reactive materials may be coated onto a core of the other reactive material, to form the reactive particle. In other embodiments, each reactive particle may be formed as a conglomerate of the two reactive materials. Shaped charges having liners and methods of formation are also disclosed.

A liner for a shaped charge having integrated tracers. The liner, when the associated shaped charge is detonated, does not create a plug, carrot, or residue in the created perforation tunnel. The liner includes integrated tracers that, after detonation, are scattered into the perforation tunnel and then begin to flow back in formation fluid flow and are identifiable in the flow.

A liner for a shaped charge having integrated tracers. The liner, when the associated shaped charge is detonated, does not create a plug, carrot, or residue in the created perforation tunnel. The liner includes integrated tracers that, after detonation, are scattered into the perforation tunnel and then begin to flow back in formation fluid flow and are identifiable in the flow.

A preparation method of a uniform low stress cone shaped charge liner includes the steps of multi-pass extrusion forming, vibration aging treatment, and cryogenic treatment. The step of multi-pass extrusion forming refers to 4 to 8 passes of extrusion deformation under the actions of a three-dimensional compressive stress and a deformation rate of 5 to 10 mm/s, having a deformation amount of 5 to 50% for each pass. The shaped charge liner prepared by the present invention has high dimensional accuracy, good geometric symmetry, low stress value, and excellent stability in the precise machining process and in use, which may significantly improve the penetration capability and stability of the shaped charge liner of high-explosive anti-tank warheads.

A preparation method of a uniform low stress cone shaped charge liner includes the steps of multi-pass extrusion forming, vibration aging treatment, and cryogenic treatment. The step of multi-pass extrusion forming refers to 4 to 8 passes of extrusion deformation under the actions of a three-dimensional compressive stress and a deformation rate of 5 to 10 mm/s, having a deformation amount of 5 to 50% for each pass. The shaped charge liner prepared by the present invention has high dimensional accuracy, good geometric symmetry, low stress value, and excellent stability in the precise machining process and in use, which may significantly improve the penetration capability and stability of the shaped charge liner of high-explosive anti-tank warheads.

A gradient control method for a microstructure ultrafine crystallization of a deep cone copper shaped charge liner includes the steps of an extrusion forming, a recrystallization heat treatment, and a high-frequency percussion. A multi-pass extrusion is used in the extrusion forming, and in the high-frequency percussion step, a percussion speed is 30,000 to 40,000 times/min, a percussion force is 1600 N to 2000 N, and a number of percussion times is 1 to 3. The forming and surface quality control of the deep cone shaped charge liner are realized by the control technology of the present invention; the plasticity of the material is improved, and fine crystal structures are obtained; and an ultrafine grain gradient structure distributed along the thickness direction is formed in the inner surface of the shaped charge liner.

A gradient control method for a microstructure ultrafine crystallization of a deep cone copper shaped charge liner includes the steps of an extrusion forming, a recrystallization heat treatment, and a high-frequency percussion. A multi-pass extrusion is used in the extrusion forming, and in the high-frequency percussion step, a percussion speed is 30,000 to 40,000 times/min, a percussion force is 1600 N to 2000 N, and a number of percussion times is 1 to 3. The forming and surface quality control of the deep cone shaped charge liner are realized by the control technology of the present invention; the plasticity of the material is improved, and fine crystal structures are obtained; and an ultrafine grain gradient structure distributed along the thickness direction is formed in the inner surface of the shaped charge liner.