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Tribological studies on multi-coated forming tools

Title data

Weikert, Tim ; Tremmel, Stephan ; Stangier, Dominic ; Tillmann, Wolfgang ; Krebs, Eugen ; Biermann, Dirk:
Tribological studies on multi-coated forming tools.
In: Journal of Manufacturing Processes. Vol. 49 (January 2020) . - pp. 141-152.
ISSN 1526-6125
DOI: https://doi.org/10.1016/j.jmapro.2019.11.021

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Processes of Sheet-Bulk Metal Forming combine operations of both sheet and bulk metal forming, enabling the production of closely-toleranced functional components. Locally differing friction conditions on a single tool surface are crucial to control the material flow and to reduce process forces and tool wear. In order to understand how different friction conditions on a multi-coated tool surface affect the material flow during forming operations, variants of amorphous carbon coatings (a-C:H:W) and Cr-based hard coatings (CrAlN, CrAlCN) were deposited in combinations side by side on punches of ring compression tests. Evaluating the rings’ shapes revealed the coatings’ effects on material flow in terms of ring inner contours with sections of varying curvatures. Characteristic friction mechanisms were observed, which allowed a local delimitation of friction conditions by selectively applied coatings.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Engineering Design and CAD
Profile Fields > Advanced Fields > Advanced Materials
Profile Fields > Emerging Fields > Energy Research and Energy Technology
Result of work at the UBT: No
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 17 Sep 2020 11:25
Last Modified: 17 Sep 2020 11:25
URI: https://eref.uni-bayreuth.de/id/eprint/57050