Experimental Study of Upsetting and Die Forging with Controlled Impact

Authors: T. Penchev, D. Karastoyanov

Abstract:

The results from experimental research of deformation by upsetting and die forging of lead specimens wit controlled impact are presented. Laboratory setup for conducting the investigations, which uses cold rocket engine operated with compressed air, is described. The results show that when using controlled impact is achieving greater plastic deformation and consumes less impact energy than at ordinary impact deformation process.

Keywords: Rocket Engine, Forging Hammer, Sticking Impact, Plastic Deformation.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1091926

References:

[1] Degarmo E. P., Black J. T., Kohser R. A. (2003), Materials and Processes in Manufacturing (9th ed.), Wiley.
[2] Altan T., G.Ngale, G.Shen, Cold and Hot Forging: Fundamentals and Applications, 2005, ASM International.
[3] Bodurov P., Penchev T., Industrial Rocket Engine and its Application for Proppeling of Forging Hammers, Journaj of Materials Processing Technology, v.161, 3, 2005, 504-508.
[4] . Penchev, P.Bodurov, D.Karastojanov, New Industrial Engine – Priority and Field of Application, Proceedings of Manufacturing Systems, Bucharest, 2012, v.7 (4), 241-244.
[5] T.Penchev, I.Altaparmakov, D.Karastojanov, Experimental study on the possibilities to decrease the coefficient of restitution after impact, International Journal "Applied Mechanics and Materials”, v.219, 2012, 1659-1662.
[6] T. Penchev, D.Karastojanov, I.Altaparmakov, Experimental Study on "Controlled Impact” Effect in Plastic Deformation Processes, "Advanced Materials Research”, v.772, 2013, pp 3-8
[7] P. Genova, K. Kostadinov, V. Kotev., Kinematic invariants with infinitesimally close positions of mechanisms with two degrees of freedom., Theoretical and Applied mechanics, 2-5 Sept. 2009, Borovets, Bulgaria, 2009.
[8] P. Genova, K. Kostadinov, V. Kotev, M. Mihailova., Application of methods of kinematic geometry in the synthesis of manipulating systems., Mechanics of machines, vol. 91, pp: 79-82, 2010.