Study on Mechanism of High-Speed Cutting MTMoCr Based on FEM

The alloy cast-iron MTMoCr is one of the most important materials that used to make auto panel dies. A finite element model (FEM) is built to study high-speed machining process of auto panel dies. Under conditions of high-speed cutting, high strain rate, high temperature and high strain are happened in the work piece material. High-speed compress experiment is done to achieve material mechanical behaviors. Other key technologies such as interface friction and heat conduction of tool rake face and chip flow are studied. High-speed cutting experiments are done and the cutting forces from FEM is verified. The formation of serrated chip in high-speed cutting MTMoCr is simulated and the mechanism of high-speed cutting MTMoCr is revealed partly. The study result can be used to optimize high-speed machining process of auto panel dies.