The finite-element method is used to study the effect of the design parameters of the die on the production of hollow brass parts by cold direct extrusion and expansion on a cone punch. The results are compared with data on conventional indirect extrusion. The elastic deformation and increase in the temperature of the metal during cold extrusion are taken into account. Intermediate and final shapes and dimensions of workpieces are determined by simulation. The dependence of the extrusion force on the tool displacement and the distribution of normal stress over the tool–workpiece contact surface under the maximum force is established. The stress-strain state of the workpiece during extrusion is determined. The distribution of stress intensity, strain intensity, and temperature over the deformed workpiece at the final stage of extrusion is plotted. Rational design parameters of a die for direct extrusion and expansion are proposed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
G. A. Navrotskii (ed.), Cold Die Forging: Handbook, Vol. 3, Forging and Stamping, Mashinostroenie, Moscow (1987).
L. I. Alieva, “Combined forming and extrusion,” Materials Processing by Pressure: Coll. Works, DGMA (2016), No. 1 (42), pp. 100–108.
G. A. Danilin and V. P. Ogorodnikov, Theory and Calculation of Processes of Combined Plastic Forming, BGTU, St. Petersburg (2004).
L. I. Alieva, O. V. Chuchin, and P. V. Gnezdilov, “Methods for reducing extrusion forces,” Vest. Kherson. Nats. Tekhn. Univ., No. 4 (55), 82–87 (2016).
I. Aliiev, L. Aliieva, N. Grudkina, and I. Zhbankov, “Prediction of the variation of the form in the processes of extrusion,” Metallurg. Mining Industry, 3, No. 7, 17–22 (2011).
L. Aliieva and Y. Zhbankov, “Radial-direct extrusion with a movable mandrel,” Metallurg. Mining Industry, 7, No. 11, 175–183 (2015).
A. G. Ovchinnikov, Fundamentals of the Theory of Extrusion in Presses, Mashinostroenie, Moscow (1983).
W. Johnson and P. B. Mellor, Engineering Plasticity [Russian translation], Mashinostroenie, Moscow (1973).
A. M. Dmitriev, “Studying the combined process of extrusion-and-expansion,” Izv. Vuz., Mashinostr., No. 4, 140–148 (1984).
V. F. Grechnikov, A. M. Dmitriev, V. D. Kukhar’, et al., Advanced Cold Forming Processes, Mashinostroenie, Moscow (1985).
V. L. Kalyuzhnyi, L. I. Alieva, and I. P. Kulikov, “Comparative analysis of indirect extrusion and combined direct extrusion and expansion of hollow parts with constant inner diameter,” Materials Processing by Pressure: Coll. Works, DGMA (2013), No. 4 (37), pp. 87–92.
V. L. Kalyuzhnyi, L. I. Alieva, and V. N. Gornostai, “Determining the forces to pull the punch from a deformed workpiece and to push out the workpiece from the die in cold extrusion of hollow parts with different degree of deformation,” Materials Processing by Pressure: Coll. Works, DGMA (2016), No. 1 (42), pp. 90–100.
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Metallurg, No. 5, pp. 22–27, May, 2017.
Rights and permissions
About this article
Cite this article
Kalyuzhnyi, V.L., Alieva, L.I., Kartamyshev, D.A. et al. Simulation of Cold Extrusion of Hollow Parts. Metallurgist 61, 359–365 (2017). https://doi.org/10.1007/s11015-017-0501-1
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11015-017-0501-1