Numerical Investigation of the Hot Isothermal Process and Force Size-Effect of a Clutch-Half Forming

Article Preview

Abstract:

The paper deals with friction problems occur on the contact surface between the effect workpiece and tool and also size-effect during metal forming process. In the carried out numerical procedure the adaptation of the real isothermal conditions due to non-constant friction was investigated for original and resized experimental part. In scope of the paper two friction factors and one type of aluminium wrought alloy of the Al-Mg-Si-Cu system were used for numerical simulation, which were performed in QForm-2D/3D. Obtained results have shown that there is a functional dependency between deformation forces for original and resized forgings. It is quit independent from the friction factor and more depends on temperature.

You might also be interested in these eBooks

Info:

Periodical:

Key Engineering Materials (Volumes 611-612)

Pages:

1608-1616

Citation:

Online since:

May 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] M. Geiger, A. Messner, U. Engel, Production of microparts – size effects in bulk metal forming, similarity theory, Production Engineering IV/1 (1997) 55 – 58.

Google Scholar

[2] F. Vollertsen, H.N. Schulze, Z. Hu, State of the art in micro forming, International Journal of Machine Tools & Manufacture 46 (2006) 1172 – 1179.

DOI: 10.1016/j.ijmachtools.2006.01.033

Google Scholar

[3] G. -Y. Kim, M. Koc, Modelling of the size effect on the behaviour of metals in microscale deformation processes, Transactions of the ASME 129 (2007) 470 – 476.

Google Scholar

[4] J. Jeon, A.N. Bramley, A friction model for micro forming, Int. J. Adv. Manuf. Technol. 33 (2007) 125 – 129.

Google Scholar

[5] M. Geiger, M. Kleiner, R. Eckstein, N. Tiesler, U. Engel, Micro forming. Annals of the CIRP №2(50) (2001) 445 – 462.

DOI: 10.1016/s0007-8506(07)62991-6

Google Scholar

[6] User's guide QForm, Theoretical formulation and finite element technique, information on www. qform3d. ru/db_files/326/1256. pdf (stand on the 01. 12. 2013).

Google Scholar

[7] V. Perfilov, M. Petrov, P. Petrov, Development and Research on Near Net Shape Forging Technology of Round Part with Flange made of Aluminium Alloy A95456, in: Jan Kusiak et al. (Eds. ), Proceeding of the 10th International Conference on Metal Forming «MetalForming», Cracow, 2004, p.631.

DOI: 10.1016/j.jmatprotec.2006.03.206

Google Scholar

[8] A.A. Milenin, A.N. Golovko, I. Mamuzic, The application of three-dimensional computer simulation when developing dies for extrusion of aluminium shapes, Metallurgia №1 (41) 53 – 55 (in Russian).

Google Scholar

[9] N. Biba, A. Lishny, A. Milenin, Two levels approach to the problem of extrusion process optimization, in: Proceedings of the 6th International Conference on Numerical Methods in Industrial Forming Processes «NUMIFORM», Netherlands, 1998, p.627.

Google Scholar

[10] A.N. Levanov, V.L. Kolmogorov, S.P. Burkin, B.R. Kartak, U.V. Ashpur, U.I. Spasskiy, Contact friction in metal forging, Metallurgia Publisher, Moscow, 1976 (in Russian).

Google Scholar

[11] P. Petrov, J. Bast, M. Petrov, V. Voronkov, M. Schajchulov, Numerische Vergleichsanalyse der Methoden zur Abschätzung der Reibung in Umformprozessen, Tribologie und Schmierungstechnik 5 (2011) 10 – 14 (in German).

Google Scholar

[12] P. Petrov, V. Voronkov, K. Potapenko, V. Ivanov, The Effect of transient change in strain rate on plastic flow behaviour of Al-Mg-Si alloy at elevated temperatures, in: G. Minary (Eds. ), AIP Conference Proceedings 1353: Proceedings of the 14th International Conference on Material Forming (Esaform 2011), Springer Verlag, Berlin 2011, p.374.

DOI: 10.1063/1.3589544

Google Scholar

[13] B. -A. Behrens, H. Conrads, F. Schäfer, Modellierung von Größeneinflüssen in der Warmmassivumformung, in: Größeneinflüsse bei Fertigungsprozessen. Beiträge zum Abschlusskolloquium des SPP 1138, Bonn, (2009).

Google Scholar

[14] B. -A. Behrens, H. Conrads, P.A. Petrov, Rheological behaviour of AW-6082 aluminum alloy at elevated temperatures within wide range of strain rates, Steel research international 79 (2008) 261 – 264.

Google Scholar

[15] Z. Gronostajski, A general model describing flow stress of copper alloys in different deformation conditions, J. Mater. Proc. Techn. 142 (2003) 684 – 691.

DOI: 10.1016/s0924-0136(03)00805-7

Google Scholar

[16] J.J. Urcola, C.M. Sellars, A model for a mechanical equation of state under continuously changing conditions of hot deformation, Acta Metallurgica 35 (11) (1987) 2659 – 2669.

DOI: 10.1016/0001-6160(87)90265-3

Google Scholar