Cutting Parameter Optimization Based on Optimal Cutting Temperature in Machining Inconel718

Abstract

Nickel-based alloy Inconel718 is widely used in the aerospace industry. However, it is difficult to machine. Tool wear is serious, which leads to lower machining efficiency, and it is thus of great importance to choose reasonable cutting parameters to decrease tool wear and increase machining efficiency. In this article, coated carbide tools were used to cut Inconel718. Scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectrometer (EDS) was used to study tool wear mechanism. In light of the tool wear mechanism, tool flank wear model was established. The optimal cutting temperature was obtained using the established wear model. Further cutting parameter optimization was conducted according to the optimal cutting temperature. The optimized cutting parameters can be considered to increase tool life and machining efficiency.