Project in the Field of Research
Tribology and Surface Engineering


Research of foil-free forming of stainless steels (Triple F)

Forming of stainless steel with stringent requirements on surface integrity is currently realized using protective foils as a separating agent between tools and workpiece. The protective foils are applied with special machines and need to be removed after the forming process or at the end customer. This approach has pronounced economic and ecological disadvantages. Alternative tribological systems for a foil free forming are insufficiently researched and not yet reliably applicable in a production process. Recent developments in the field of machine hammer peening motivate the investigation of surface modifications for foil free sheet metal forming. The research question of this paper is: Under which tribological boundary conditions do structured tool surfaces provide a total separation of tools and workpiece? The performed research work is based on experimental analyses investigating the friction behavior of surface structured tools. Numerical simulations of normal and sliding contact using finite element method enable the investigation of the lubricated interaction gap in order to identify significant tribological process parameters.

The aim of this project is the development of a ecological tribosystem to enable foil-free forming of stainless steels and to transfer this tribosystem in to the industrial practice. Therefore, the companies Miele & Cie. KG (producer of sheet metal parts), Outokumpu Nirosta GmbH (manufacturer of sheet metal material), Raziol Zibulla & Sohn GmbH (lubricant supplier) as well as Eifeler Werkzeuge GmbH (coating specialist) corporate to achieve this aim.

By means of a systematic approach based on analogy tests such as strip drawing and sheet metal testing machines, deep drawing of an industry-related workpiece and industrial field tests the necessary mechanisms are experimentally and numerically studied.

The project members thank the EUROPÄISCHEN UNION within the program NRW-EU Ziel 2-Programms for funding this research.


Do you have questions concerning this research project?

Your contact:
Dr.-Ing. Dipl.-Wirt.Ing.
Daniel Trauth
Chief Engineer
Cluster Produktionstechnik 3A 440
Tel.: +49 241 80-27999
Fax: +49 241 80-627999