The properties of the sintered copper powder liner

Abstract

In order to study the properties of sintered copper powder shaped charge liner, the copper powder, whose particle size was below 20 μm, was chosen as the main material. The mixed powders were directly pressed into the desired shape of the shaped charge liner by the top direct-pressure way. The microscopic morphology of the spinning shaped charge liner, the sintered and non-sintered powder liners, and the particle properties of the copper powder were studied with scanning electron microscopy. The experimental results showed that the irregular copper powder could get together effectively and sintering could improve the compactness of the powder liner effectively. The wall thickness and density of the non-sintered and sintered liner were also tested, and it shows that sintering causes the wall thickness thinned and the density improved. The penetration depths of non-sintered powder liner, sintered powder liner and the spinning copper plate liner were tested with different standoff respectively, showing that the penetration properties of sintered powder liner are well.

Keywords

irregular copper powder / powder shaped charge liner / sintering / penetration

References

[1] Azharonok VV, Krat’ko LE, Goncharik SV, . Character of the Fast Jet Efflux Upon Detonation of Shaped Charges[J]. Journal of Engineering Physics and Thermophysics, 2008, 81(3): 494-498.

[2] Zygmunt B Formation of Jets by Shaped Charges with Metal Powder Liners[J]. Propellants Explos., Pyrotech., 2008, 33(6): 482-487.

[3] Jackowski A, Włodarczyk E The Influence of Repressing Liners Made from Sintered Copper on Jet Formation[J]. Journal of Materials Processing Technology, 2006, 171(1): 21-26.

[4] Li R-j, Liu T i-s, Shen Z-w, . On Stability of Jet Produced by Shaped Charge with Porous Liner[J]. Explosion and Shock Waves, 2009, 29(2): 217-220.

[5] Fedorov SV Magnetic-Field Amplification in Metal Shaped-Charge Jets during Their Inertial Elongation[J]. Combustion, Explosion, and Shock Waves, 2005, 41(1): 106-113.

[6] Khoei A R, Lewis R W Finite Element Simulation for Dynamic Large Elastoplastic Deformation in Metal Powder Forming[J]. Finite Elements in Analysis and Design, 1998, 30(4): 335-352.

[7] Lei F-b, Cao D-lin Numerical Simulation of the Shaped Charge Jet from Tungsten-Copper Powder Liner [J]. Chinese Journal of Explosives & Propellants, 2010, 33(6): 73-75.

[8] Jing Q-b, Jin G Z-y, SHI J, . Particles Arrangement of Powder Shaped Charge Liner and Its Thermal Treatment on Performance of Jet[J]. Chinese Journal of Explosives & Propellants, 2008, 31(1): 42-44.

[9] Azami AR, Khoei AR 3D Computational Modeling of Powder Compaction Processes using a Three-invariant Hardening Cap Plasticity Model [J]. Finite Elements in Analysis and Design, 2006, 42(8–9): 792-807.

[10] Gao Y-h, Gu X-h, Wang F-ying Powder Liner Material Density Effect on the Performance of the Shaped Charge Jet [J]. Chinese Journal of High Pressure Physics, 2013, 27(4): 1-5.

[11] Nagaoa Y, Kibeb S, Shimizuc T, . Improvement of Conical Shaped Charge System and Comparison of the Test Result between CSC and Gas Gun [J]. Acta Astronautica, 2007, 60(8–9): 763-769.

[12] Gao Y, Gu X, Liu Tiansheng Sintering Effect on the Performance of Tungsten-copper Powder Liner[J]. Journal of Wuhan University of Technology-Mater. Sci. Ed., 2012, 27(6): 1 133-1 136.

[13] Zhang Q-x, Zhang X-m, Jia W-m, . Study on Textures of the Precision Copper Shaped Charge Material with High Properties[J]. Ordnance Material Science and Engineering, 2005, 28(4): 4-9.