An experimental investigation on Inconel 718 interrupted cutting with ceramic solid end mills

Abstract Solid ceramic end mills for machining heat resistant super alloys (HRSA) have the potential to generate higher material removal rates, up one order of magnitude, with respect standard carbide tools. The operations in aerospace industry, where large removals are required obtain tiny and slender parts like turbine blades, is a cost-intensive task that can benefit adoption solid mills. However, these tools show quite limited tool life, especially when used interrupted engagement strategies. Moreover, they might induce heat-related problems workpiece surface integrity. This paper investigates cutting wear during milling Inconel 718 ø12 mm made by SiAlON. mechanisms studied together their effects on process signals as forces power, measured via external CNC integrated sensors. carried experimental campaign allowed find out clogging edge chipping were primary phenomena leading wear. Cutting strategy (downmilling or upmilling) produced different results terms sensitivity outputs whereas upmilling configuration showed best stability At same time, speed was found increase power more than downmilling cutting. analysis demonstrated typical be traced signal monitoring due high impact processes. fact shows good better life evaluation.