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Electrochemical machining of carbide metal micro tools

 
: Hackert, M.; Meichsner, G.; Schubert, A.

:
Volltext urn:nbn:de:0011-n-627071 (710 KByte PDF)
MD5 Fingerprint: 95cf5c165091cee894665f4118728384
Erstellt am: 8.4.2011


Thornett, E. ; European Society for Precision Engineering and Nanotechnology -EUSPEN-:
7th International Conference of the European Society for Precision Engineering and Nanotechnology 2007. Proceedings. Vol.2 : 20.-24.5.2007, Bremen
Bedford: Euspen, 2007
ISBN: 0-9553082-2-4
ISBN: 978-0-9553082-2-2
S.509-512
European Society for Precision Engineering and Nanotechnology (EUSPEN International Conference) <7, 2007, Bremen>
Englisch
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IWU ()
electrochemical machining; carbide metal micro tools; ECM; electrolyte jet

Abstract
Mechanical Machining of carbide metals is critical, as these materials belong to the hardest substances known. Electrochemical Machining (ECM) is presented as an alternative to conventional processing. This technique dissolves conductive materials by anodic dissolution in neutral solutions at extremely high current densities of about 100 A/cm2. This is independent from the hardness of the work piece and should therefore be favourable to structuring carbide metals. For the reason of carbide metal alloys being composites of extremely hard particles embedded in a softer matrix, ECM of these materials is complex due to the nonhomogenous structure as the components dissolve and passivate differently. The paper starts with results of modifying conventional micro tools made of tungsten carbide. In the second part the potential of working with a free electrolyte jet (EJM) is investigated.

: http://publica.fraunhofer.de/dokumente/N-62707.html