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Influence of different tool materials, coatings and lubrications onto shape accuracy during micro impact extrusion

Einfluß unterschiedlicher Werkzeugwerkstoffe, Beschichtungen und Schmierstoffe auf die Formgenauigkeit im Mikrofließpressvorgang
: Schubert, Andreas

Shore, P. ; European Society for Precision Engineering and Nanotechnology -EUSPEN-:
12th International Conference of the European Society for Precision Engineering and Nanotechnology 2012. Proceedings. Vol.2 : June 4th - 7th 2012, Stockholm, Sweden
Bedford: Euspen, 2012
ISBN: 978-0-9566790-0-0
European Society for Precision Engineering and Nanotechnology (EUSPEN International Conference) <12, 2012, Stockholm>
Fraunhofer IWU ()
micro impact extrusion; tool materials; coatings and lubricants; micro forming process

In this paper the impact of different tool materials, tool coatings, and lubricants onto the micro forming process of micro cavities is investigated. As tool materials two different hardened steels were used for the forming die. To lower the friction and adhesion between forming tool and aluminium substrate three coatings TiN (titanium nitride), TiCN (titanium carbon nitride), and DLC (diamond like carbon) were tested. Furthermore, the influences of different lubricants were studied. Geometric parameters and surface quality were judged by laser microscopy and SEM images of metallographic sections.