Int. J. of Materials and Product Technology   »   2012 Vol.43, No.1/2/3/4

 

 

Title: Machinability studies on laser-sintered iron-silicon carbide metal matrix composites using wire electrical discharge machining

 

Authors: C.K. Srinivasa; A.R. Vinod; P.V. Shashikumar

 

Addresses:
Central Manufacturing Technology Institute, Tumkur Road, Bangalore 560 022, India.
Central Manufacturing Technology Institute, Tumkur Road, Bangalore 560 022, India.
Central Manufacturing Technology Institute, Tumkur Road, Bangalore 560 022, India

 

Abstract: This paper focuses on wire electrical discharge machining (WEDM) of iron and iron-1, 2, 3 and 5 wt.% SiC composites produced by direct metal laser sintering (DMLS) process. Discharge currents of 9, 13 and 18 A were adopted during machining while the wire speed was maintained at 90 mm/min. Results have indicated that discharge current, laser scan speed and extent of silicon carbide content in the composites, had a greater influence on the machining time and surface roughness of the machined surface.

 

Keywords: wire EDM; electrical discharge machining; WEDM; direct metal laser sintering; DMLS; metal matrix composites; MMCs; rapid prototyping; electro-discharge machining; iron; silicon carbide; machinability; discharge current; laser scan speed; machining time; surface roughness.

 

DOI: 10.1504/IJMPT.2012.047638

 

Int. J. of Materials and Product Technology, 2012 Vol.43, No.1/2/3/4, pp.68 - 83

 

Available online: 06 Jul 2012

 

 

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