Examination of controlled thermal radiation exchange for the production of tailored properties on press-hardened components

M. Merklein; T. Schweiker; A. Reihani; S. Heibel

doi:10.21741/9781644902417-56

Examination of controlled thermal radiation exchange for the production of tailored properties on press-hardened components

Alborz Reihani, Sebastian Heibel, Thomas Schweiker, Marion Merklein

Abstract. Through the development of furnace technologies and tool concepts, partial press hardening has become an established process in the automotive industry for setting tailored properties on press-hardened components. Tailored properties on press-hardened components offer the potential to improve crash performance as well as to facilitate downstream joining processes and mechanical treatments. One approach to adjust these properties through local pre-cooling is based on a special oven chamber with an integrated masking technology, called TemperBox®. The integrated mask protects the blank locally from incident heat radiation and simultaneously absorbs the blank’s own radiation. An important parameter during this process is the pre-cooling time in the TemperBox®. The pre-cooling time can influence the phase transformation and the component properties. Therefore, blanks made of the conventional press hardening steel 22MnB5 AS150 are partially precooled in the TemperBox® for different periods of time and the component properties are investigated on the basis of formed hat profiles. In addition, a simulation approach for calculating the heat radiation exchange with the finite element software LS-Dyna® is shown. Based on the simulative and experimental investigations, it is demonstrated that there is a dependency between pre-cooling time and the components properties.

Keywords
Hot Stamping, Heat Treatment, Tailored Properties

Published online 3/17/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Alborz Reihani, Sebastian Heibel, Thomas Schweiker, Marion Merklein, Examination of controlled thermal radiation exchange for the production of tailored properties on press-hardened components, Materials Research Proceedings, Vol. 25, pp 455-462, 2023

DOI: https://doi.org/10.21741/9781644902417-56

The article was published as article 56 of the book Sheet Metal 2023

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. 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] H. Karbasian and A. E. Tekkaya, A review on hot stamping, Journal of Materials Processing Technology 210 (2010) pp. 2103-2118. https://doi.org/10.1016/j.jmatprotec.2010.07.019
[2] M. Merklein, M. Wieland, M. Lechner, S. Bruschi, A. Ghiotti, Hot stamping of boron steel sheets with tailored properties, Journal of Materials Processing Technology 228 (2016) pp. 11-24. https://doi.org/10.1016/j.jmatprotec.2015.09.023
[3] H. Lehmann, New developments in furnaces for press-hardening. In: 5th International Conference on Hot Sheet Metal Forming of High Performance Steel (2015), pp. 331-341.
[4] H. D. Baehr, K., Stephan, Heat and Mass Transfer, Springer-Verlag Berlin Heidelberg, Berlin, Heidelberg, 2006.
[5] C. Balaji, Essentials of Radiation Heat Transfer, Springer eBook Collection. Springer International Publishing; Imprint Springer, Cham, 2021
[6] G. Blankenhorn, B., Gyesi, S., Malcolm, I., Gandkota, R., Grimes, F-.,H., Rouet, Validation of a Thermal Radiation Problem using *BOUNDARY_RADIATION_ENCLOSURE. In: 12th European LS-DYNA Conference (2019), Koblenz.
[7] Springer-Verlag GmbH: VDI-Wärmeatlas, Springer Berlin Heidelberg, Heidelberg, 2013.
[8] T. Svec, Untersuchungen zur Herstellung von funktionsoptimierten Bauteilen im partiellen Presshärtprozess mittels lokal unterschiedlich temperierter Werkzeuge, Friedrich-Alexander-Universität Erlangen-Nürnberg, Dissertation, 2015.
[9] P. Åkerström, Modelling and simulation of hot stamping. Lulea University of Technology, Dissertation, 2006.
[10] P. Maynier, B. Jungmann, J. Dollet, Creusot-loire system for the prediction of the mechanical properties of low alloy steel products, D.V. Doane, J.S. Kirkaldy (Eds.), Hardenability Concepts with Applications to Steel, (1978), p. 518.