Investigation of the skin contamination predictability by means of QForm UK extrusion code

Investigation of the skin contamination predictability by means of QForm UK extrusion code

KNIAZKIN Ivan, PELACCIA Riccardo, NEGOZIO Marco, DI DONATO Sara, DONATI Lorenzo, REGGIANI Barbara, BIBA Nikolay, REZVYKH Ruslan, KULAKOV Ivan

Abstract. The paper presents an innovative approach implemented in QForm UK Extrusion FEM software to analyse one of the core defects encountered in profile extrusion known as billet skin defect. The validation of the algorithm has been performed based on a number of experimental case studies taken from the literature [1,2]. Additionally, the sensitivity of the accuracy of the results to the variation in initial parameters has been analysed for both types of profile shapes: solid and hollow. Based on this, practical recommendations have been formalised for the successful industrial use of the presented algorithm.

Keywords
Skin Contamination, Back-End Defect, FEM, QForm Extrusion, ALE Approach

Published online 4/19/2023, 10 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: KNIAZKIN Ivan, PELACCIA Riccardo, NEGOZIO Marco, DI DONATO Sara, DONATI Lorenzo, REGGIANI Barbara, BIBA Nikolay, REZVYKH Ruslan, KULAKOV Ivan, Investigation of the skin contamination predictability by means of QForm UK extrusion code, Materials Research Proceedings, Vol. 28, pp 543-552, 2023

DOI: https://doi.org/10.21741/9781644902479-59

The article was published as article 59 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] Y.T. Kim, K. Ikeda, Flow behaviour of the billet surface layer in porthole die extrusion of aluminum, Metall. Mater. Trans. A 31 (2000) 1635-1643. https://doi.org/10.1007/s11661-000-0173-4
[2] T. Ishikawa, H. Sano, Y. Yoshida, N. Yukawa, J. Sakamoto, Y. Tozawa, Effect of Extrusion Conditions on Metal Flow and Microstructures of Aluminum Alloys. CIRP Annals 55(1) (2006) 275-278. https://doi.org/10.1016/S0007-8506(07)60415-6
[3] H.S. Valberg, M. Lefstad, A.L. de Moraes Costa, On the mechanism of formation of back-end defects in the extrusion process, Procedia Manuf. 47 (2020) 245-252. https://doi.org/10.1016/j.promfg.2020.04.207
[4] S. Lou, Y. Wang, C. Liu, S. Lu, C. Su, Analysis and Prediction of the Billet Butt and Transverse Weld in the Continuous Extrusion Process of a Hollow Aluminum Profile, J. Mater. Eng. Perform. 26 (2017) 4121- 4130. https://doi.org/10.1007/s11665-017-2771-y
[5] M. Negozio, R. Pelaccia, L. Donati, B. Reggiani, L. Tomesani, T. Pinter, FEM Validation of front end and back end defects evolution in AA6063 and AA6082 aluminum alloys profiles, Procedia Manuf. 47 (2020) 202-208. https://doi.org/10.1016/j.promfg.2020.04.178
[6] M. Negozio, R. Pelaccia, L. Donati, B. Reggiani, FEM Analysis of the Skin Contamination Behavior in the Extrusion of a AA6082 Profile, Key Eng. Mater. 926 (2022) 452-459. https://doi.org/10.4028/p-y37nm3
[7] I. Kniazkin, Prediction of Underfilling Defect in Aluminium Profile Extrusion Based on ALE Simulation, Key Eng. Mater. 926 (2022) 537-544. https://doi.org/10.4028/p-42gaq6