Abstract
ABSTRACT An insight study has been addressed to communicate the machining behavior of SS 431 in terms of tool wear rate (TWR) and chip study. Experimental investigation shows that cutting speed (VC) as the most significant parameter to have TWR for SS 431. At low VC 19.5 m/min, chip formed was continuous hairy structure with regular saw fractured morphology, principally promoted due to intensely concentrated shear bands between neighboring segments resulting from shear localized instability in the primary shear zone. 25.9 and 30.6 m/min produces continuous ribbon shape chip and twisted chip, respectively. At high VC 30.6 m/min, owing to high-temperature generation, shear deformation zone was softer and perfectively plastic with least chip contact length encouraged to produce least TWR. The parameters 30.6 m/min, 0.08 mm/rev, and 0.15 mm of VC, feed, and depth-of-cut found optimum to reach least TWR. Further ANN was exercised to predict TWR is good agreement with the experiments.
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