Preparation method of uniform low stress cone shaped charge liner

US11525652B2 · kind B2 · utility

Assignee

• No.59 Research Institute of China Ordnance Industry · CN

Inventors

• Qiang Chen · Sollentuna, SE
• Dayu SHU · Chongqing, CN
• Qiang Zhao · Milpitas, US
• Feng Kang · Beijing, CN
• Shuhai Huang · Boiceville, US
• Wei Zhang · Chongqing, CN
• Zude Zhao · Chongqing, CN
• Xiangsheng Xia · Chongqing, CN

Key dates

• Filing date: Dec 5, 2018
• Grant date: Dec 13, 2022
• Expiry date: Oct 13, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F42B33/0271
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

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.