Although the casting process simulation has made a lot of valuable achievements in the past few decades, some important research is still puzzling researchers. As the only way for the development of the casting industry, computer simulation should have the following characteristics in the future development of simulation software:
(1) It must be able to predict the problems that can occur in the process, the location of defect pores, shrinkage holes, cold shuts, inclusions, sand corrosion and hot cracks in the casting, and how to solve these problems in an appropriate way under the premise of comprehensive consideration of different production details.
(2) It is necessary to consider more influencing factors in the simulation, establish a more complete macro and micro unified model that conforms to the actual situation, and develop a more complete CAD software that focuses on the casting process and has a friendly visual interface graphics before and after processing.
(3) It is necessary to further improve the model, optimize the algorithm, formulate accurate and efficient numerical calculation methods, and establish an accurate and comprehensive database of solidification transport physical properties.
(4) For a long time to come, solidification simulation, as a powerful tool, still needs to be used by process designers with practical experience to play its role and potential.
(5) In the networked environment, it should be the key development direction to combine design, simulation, manufacturing, evaluation and other links into a system in parallel. It is also a scientific method for rapid product development and improving casting quality.
(6) The simulation of casting solidification process is a very complex process. If only the solidification number is simulated from the energy equation, and the transient changes of the flow field and temperature field in the mold filling are ignored or simplified, the accuracy of the calculation of the temperature field in the solidification process will be greatly affected. At the same time, the flow of molten metal during mold filling is closely related to many casting defects, such as cold shuts, gas entrapment, shrinkage porosity and macrosegregation.