• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology


Indian Journal of Science and Technology

Year: 2013, Volume: 6, Issue: 7, Pages: 1-6

Original Article

Influence of Drill Geometry on Surface Roughness in Drilling of Al/SiC/Gr Hybrid Metal Matrix Composite


We present a comparative study on three different drill bits and the factors influencing on the surface roughness in drilling Al/SiC/Graphite hybrid composite material. The surface roughness of ‘coated carbide twist drill’, ’multifaceted drill’ and ‘step drill’ bits were analysed. The machining parameters considered were the cutting speeds (1000 rpm, 2000 rpm, and 3000 rpm), feed rates (0.05 mm/rev 0.10 mm/rev and 0.15 mm/rev), and diameter of drill (4 mm, 8 mm and 12 mm). The analyses of the results were done using effect graphs. The results indicated that the step drill performed better than the other drills considered.
Keywords: Hybrid Metal Matrix Composites, Drilling, Surface Roughness.


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