Журналы →  Tsvetnye Metally →  2019 →  №6 →  Назад

METAL PROCESSING
Название Forging of small gauge shaped charge liners using copper ball blanks
DOI 10.17580/tsm.2019.06.13
Автор Kukhar V. D., Kireeva A. E., Pasko A. N.
Информация об авторе

Tula State University, Tula, Russia:

V. D. Kukhar, Professor, Head of the Department of Theoretical Mechanics
A. E. Kireeva, Associate Professor, Department of Theoretical Mechanics
A. N. Pasko, Professor, Department of Theoretical Mechanics

Реферат

Due to their high penetration capacity, shaped charges have found a broad application in military, oil and steel industries. Liner is an important element of a shaped charge that to a great extent defines its penetration capacity. Increased penetration capacity of a shaped charge is governed by the physical and mechanical properties of the liner material and the manufacturing technology applied. Currently, the most popular liners include conical copper liners. The most common processes involved in liner production include rolling of flat sheets on a tapered mandrel and pressing of semi-finished products made of powders. One of the major drawbacks of the above processes includes their low productivity in comparison with forging. Moreover, rolling a flat workpiece on a tapered mandrel is associated with a significant amount of asymmetric plastic deformation leading to mechanical anisotropy of the product and greatly affecting the penetration capacity of the shaped charge. An earlier study that looked at the applicability of bar forging in the production of shaped charge liners showed that such technique helped produce axisymmetric mechanical properties in the finished product. However, the tapered shape of the liners hinders the applicability of this technique due to the difficulty of positioning a bar in the die cavity. The authors describe the results of theoretical and experimental studies that focused on the production of small gauge liners having different geometry and made from ball blanks by single forming. The authors looked at the stress-strain state of the material, regimes of the forces applied and ultimate formability of a ball blank when forging shaped charge liners with 90o, 60o and 30o cone angles and constant and varying cone wall thickness.

Ключевые слова Liner, forging, ball blanks, copper, die, punch, deformation, fracture
Библиографический список

1. Smelikov V. G. Consistency of bounded cumulation. Moscow : Studiya Etnika (IP Troshkov A.V.), 2016. 120 p.
2. Dmitriev A. M., Vorontsov A. L. Forging and die forging technology. Part 1. Extrusion forging : Textbook for university students. Moscow : Mashinostroenie-1, 2005. 500 p.
3. Kalashnikov V. V., Demoretskiy D. A., Trokhin O. V. et al. Production of high-penetration shaped charge liners. Izvestiya Samarskogo nauchnogo tsentra Rossiyskoy akademii nauk. 2011. Vol. 13, No. 1 (2). pp. 373–376.
4. Novotney D., Mallery M. Historical Development of Linear Shaped Charges. AIAA. 2007. pp. 1–12.
5. Ayisit O. The Influence of Asymmetries in Shaped Charge Performance. International Journal of Impact Engineering. 35. 12 (2008). pp. 1399–1404.
6. Akštein Z., Riha R. Influence of Tamping on Performance of Linear Shaped Charges. Proceeding of the 7th Seminar New Trends in Research of Energetic Materials. Pardubice, 2004. pp. 53–61.
7. Sueska M. Eksplozije i eksploziv — njihova mirnodopska primjena. Brodarski institute. Zagreb. 2001.
8. Vorotilin M. S., Dronova T. I. Analysis of the existing techniques for manufacturing shaped charge liners. Izvestiya Tulskogo gosudarstvennogo universiteta. Tekhnicheskie nauki. 2012. No. 11-1. pp. 329–335.
9. Minin V. F., Minin I. V., Minin O. V. Method of cumulative charge anisotropic coating producing. Patent RF, No. 2603327. Published: 27.11.2016. Bulletin No. 33.
10. Kukhar V. D., Kireeva A. E., Mitin O. N. Justifying the choice of blanks for forging small gauge shaped charge liners with constant wall thickness. Forging and Stamping Production. Material Working by Pressure. 2018. No. 10. pp. 39–42.
11. Kukhar V. D., Kireeva A. E. Justifying the choice of blanks for forging small gauge shaped charge liners with varying wall thickness. Izvestiya Tulskogo gosudarstvennogo universiteta. Tekhnicheskie nauki. 2018. No. 10. pp. 187–192.
12. Kireeva A. E., Kukhar V. D., Mitin O. N. Production of small gauge shaped charge liners from cut-to-length rods by forging. Forging and Stamping Production. 2017. Issue 10. pp. 44–48.
13. The official website of QFORM. About the product QFORM VX: Official website of KvantorForm. Available at: http://www.qform3d.ru/files_ru/docs/VX_RUS.pdf.
14. Biba N. V., Stebunov S. A. QForm 5.0 – a software tool to boost metal forming performance. CAD/CAM/CAE observer. 2008. No. 8 (44). pp. 1–3.

Language of full-text русский
Полный текст статьи Получить
Назад