Abstract

This work deals with the investigation of the micro Electrical Discharge Machining (micro-EDM) behaviour of a commercially available ZrO2-TiN ceramic composite. The study is performed on an advanced engineering EDM equipment dedicated to micro EDM applications. Taguchi orthogonal array and one factor variation design are employed as investigation methodology for the understanding of the influence of the electrical parameters on the micromachining performance and its optimisation, respectively. The response is evaluated in terms of volumetric Material Removal Rate (MRR), Relative Tool Wear (RTW) and surface quality. Due to the importance that surface integrity has on the mechanical behaviour of ceramics during service, the study focuses on the semi-finishing/finishing regime. The material investigated displays MRR up to 0.22 mm3/min and RTW being in the range of ~ 5-15 %. Surface roughness lower than 0.2 ?m are achievable. Due to the ideal flexural strength and fracture toughness of ZrO2-TiN composites, a micro-aerodynamic thrust bearing surface is realized as application example.

Autore Pugliese

• Modica Francesco Giovanni

Tutti gli autori

• Ferraris E.; Galbiati M.; Modica F.; Reynaerts D.

Titolo volume/Rivista

Non Disponibile

Anno di pubblicazione

2010

ISSN

Non Disponibile

ISBN

978-981-08-6555-9

Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

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Settori ERC

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Codici ASJC

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