Issue 70

P. Kulkarni et alii, Frattura ed Integrità Strutturale, 70 (2024) 71-90; DOI: 10.3221/IGF-ESIS.70.04

feed and depth of cut. The better tool life in the range of 8-10 min was found to be obtained using a lower cutting speed of 30 m/min, and a feed in the range of 0.2-0.25 mm/rev, and a lower depth of cut. Results suggested that increasing cutting speed and lowering feed and depth of cut values resulted in decreased cutting force and surface roughness. The selection of feed and depth of cut turned out to be more critical in achieving a lower cutting force. Feed significantly impacts surface roughness. The selection of lower cutting parameters led to better tool life estimates.

Figure 16: Surface plots for surface roughness ( Ra ).

Figure 17: Surface plots for tool life ( TL )

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