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INFLUENCE OF DIE VIBRATION ON FRICTION IN UPSET-FORGING OF SMALL COMPONENTS

1 PRESZ Wojciech
Co-authors:
2 SHA Jinming 1 RAVN Bjarne 2 WANHEIM Tarras
Institutions:
1 Warsaw University of Technology, Institute of Material Processing, Warsaw, Poland, EU, w.presz@wip.pw.edu.pl
2 Technical University of Denmark, Lyngby, Denmark, EU
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
259-264
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
DOI:
https://doi.org/10.37904/metal.2019.702
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
668 views / 415 downloads
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Abstract

This paper deals with the influence of die surface orientation of roughness and die surface excitation on friction in metal forming processes. A way to evaluate friction coefficients from the flattening of long rectangular specimen was used for aluminium specimens with different die surface orientation of roughness. At the same time, this method was also used to examine the influence of die surface lateral vibration to friction with different parameters, such as frequency, amplitude and orientation of the specimen. The experimental results show that the roughness and die vibration have significant effects on friction in bulk forming process of small components.

Keywords: Friction Test, Die Vibration, Surface Roughness and Upsetting

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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