Simulation of stainless steel 30CrMnSi orthogonal cutting is carried out employing finite element method. Firstly, finite element model of workpiece and cutting tool were established according to physical properties of materials. Secondly, orthogonal cutting experiment table was also built through empirical cutting parameters of stainless steel. Finally, stress field, temperature field of model and cutting force were obtained from simulation. The simulation results show that the cutting force increases rapidly from zero and then decreases, finally changes in a certain range in the process of cutting. In addition, depth of cut plays a major influence on stress field, temperature field and cutting force in the circumstance of low speed cutting. It provides reference for the actual machining of stainless steel 30CrMnSi.
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