After decades of development, the computer simulation of casting filling and solidification process has After decades of development, the computer simulation of casting filling and solidification process has developed into the frontier field of casting discipline, and has stepped from the initial theoretical stage to the current engineering practical stage. Its role is immeasurable. It has changed people’s understanding of casting tradition in the past and the concept of guiding production by experience. Foundry workers can now rely on theory as a guide to large-scale production, and the quality of products can be guaranteed. Researchers can use simulation to predict the production defects of castings, and take timely countermeasures to optimize the casting process, so as to effectively reduce the production cost.
The filling process of casting is a very important stage of casting production. Many casting defects we are familiar with, such as slag inclusion, air entrainment and shrinkage cavity, are closely related to the filling process. In order to control the flow mode of liquid metal and the order of filling, it is necessary to simulate the filling process by computer. From the development of numerical simulation theory of mold filling process, the most common method used by foundry workers is SOLA-VOF method. Many foundry simulation workers adopt rigorous volume function on the basis of this method. These models deal with the problem of free surface in the flow process, and can effectively modify the simulation results, so as to ensure the accuracy of simulation.