Numerical Simulation Life Prediction of Alu- Alloy Die -Casting Dies

Abstract: The die casting technology has more wide application in the production of a variety of small appliances and cooking utensils. However, it is difficult to set casting technology parameters, and the life of casting die is short. In this study, the numerical simulation software was employed to simulate the aluminum mold. By analyzing temperature field, the temperature changes of the mould surface were predicted in the die-casting cycle. According to the thermal stress simulation and mathematic model, the thermal stress and strain variations were presented in the process of casting, The thermal stress changes of A, B point on the mold surface were compared under the different pouring temperature, die preheat temperature and cooling water temperature. On the basis of the simulation results, the best die casting technology parameters were selected. The life of die casting dies is predicted by mathematical model, and the simulation results agree well with the result of experiment. This study reached the conclusion is that the die life prediction method is reliable.