Finite element simulation of cutting HT250 process by self-prepared Si3N4 ceramic insert in different cutting speed

摘要

The simulation models were created based on the material properties of the self-prepared Si_3N_4 insert and HT250 workpiece. Using these models, the simulation results of cutting force, temperature and tool stress were availably obtained in different cutting speed. It was concluded by these results that the cutting properties of Si_3N_4 ceramic insert were optimum in V_c=250 or 300m/min, due to low cutting force, low tool temperature, low stress-effective. It was also predicted the tool wear appeared at tool nose firstly.