Kolja Andreas
University of Erlangen-Nuremberg
17 Papers
81 Citations
Kolja Andreas is an academic researcher from University of Erlangen-Nuremberg. The author has contributed to research in topics: Tribology & Machining. The author has an hindex of 6, co-authored 17 publications.
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Papers
Tribological measures for controlling material flow in sheet-bulk metal forming
Maria Löffler,Kolja Andreas,Ulf Engel,Robert Schulte,D. Groebel,Eugen Krebs,Dennis Freiburg,Dirk Biermann,Dominic Stangier,Wolfgang Tillmann,Tim Weikert,Sandro Wartzack,Stephan Tremmel,H. Lucas,Berend Denkena,Marion Merklein +15 more
TL;DR: Within the present study different methods to adapt the surfaces are presented and investigated with respect to their tribological effectiveness in SBMF, and the potential of surface modifications to improve S BMF processes is shown.
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Numerical and experimental investigation of dry deep drawing of aluminum alloys with conventional and coated tool surfaces
TL;DR: In this paper, a tool-and workpiece-sided surface characterization was performed to validate the finite element (FE) model for dry deep drawing with carbon-based coatings and showed that applying a ta-C coating led to decreasing friction and thus lower forming forces.
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Investigation of tribological behaviour of a-C:H coatings for dry deep drawing of aluminium alloys
TL;DR: In this article, amorphous hydrogenated carbon (a-C:H) coatings were prepared by plasma-enhanced chemical vapour deposition (PECVD) for dry sheet metal forming.
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Influence of tool surface on tribological conditions in conventional and dry sheet metal forming
TL;DR: In this article, a flat strip drawing test was conducted to determine the friction coefficients depending on the tool surface properties resulting from various machining processes, and a surface characterization before and after the experiments was performed to gain knowledge about the wear mechanisms.
Investigation of surface finishing of carbon based coated tools for dry deep drawing of aluminium alloys
Jennifer Steiner,Kolja Andreas,Marion Merklein +2 more
- 01 Nov 2016
TL;DR: In this paper, the authors investigate the potential of carbon-based coatings for dry deep drawing, friction and wear behavior of different coating compositions are evaluated in strip drawing tests, and the results show reduced friction with decreased roughness for coated tools.
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