High-speed Cutting Simulation and Tool Wear Mechanism of Inconel 718 Nickel Base Superalloy
Nickel based superalloys have poor machinability due to their high-temperature strength and low thermal conductivity. There are some problems in high-speed cutting of Inconel 718 with ceramic tools,such as fast tool wear and short life. Through comparative analysis of simulation and experiment,the effects of cutting parameters on cutting force,cutting tem-perature and tool wear are studied,and the dynamic distribution of temperature field and stress field on the front and back tool faces during high-speed cutting is obtained,which provides guidance for high-speed cutting of nickel base superalloys,tool de-sign and preparation. The results indicate that the influence of cutting speed on cutting force and cutting temperature is less than that of depth of cut and feed rate. When selecting cutting parameters,the higher cutting speed is preferred. Notch wear is the key factor to restrain the durability of ceramic tools,and the main failure mechanism is adhesive wear.
nickel based superalloyhigh-speed cuttingcutting simulationcutting forcetool wear
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维普
