Development of casting process simulation technology in china

The relevant research in China began in the late 1970s, and although it started late, it developed rapidly. In 1980, Shenyang Institute of Needle Manufacturing and Dalian University of Technology conducted temperature field simulation for castings. Subsequently, according to the actual needs of production, the State arranged scientific and technological research projects to focus its research efforts on “large-scale casting solidification control research CAD” and “large-scale steel casting technology”. In the field of precision casting, Northwest University of Technology, Beijing University of Aeronautics and Astronautics, Beijing Institute of Aeronautical Materials and other institutions have done a lot of work. Xi’an Jiaotong University has carried out two-dimensional and three-dimensional simulation of metal aluminum and aluminum alloy by direct difference method. Shenyang Institute of Foundry and Tsinghua University have studied the flow field simulation of the filling process of free surface.

The FTSolver simulation software developed by Tsinghua University has been applied in many domestic enterprises. In addition to the above research institutions, Shanghai Jiaotong University, Shenyang University of Technology, Beijing University of Science and Technology, Shenyang Institute of Large Castings and Forgings, Hefei University of Technology and other institutions have also made many research achievements.

Compared with foreign research, China has a small gap in the basic research of numerical simulation of solidification process, and has its own characteristics in some aspects. However, compared with foreign countries, China has a large gap in the development and application research of commercial software. The number of commercial software is small, the popularity rate is not high, and the application field needs to be expanded. For example, the research on high-temperature alloy, copper, aluminum, and magnesium alloy casting is less, and the research on single crystal casting, precision casting There are few researches on centrifugal casting, and some of them are even blank. However, these problems can not be solved in a short time. They need long-term and systematic improvement and development in the context of rapid development of manufacturing industry. In recent years, the application of casting solidification numerical simulation technology in casting process factories is increasing. In order to arm themselves with high-tech to meet the needs of domestic and foreign economic forms and technological competition, large enterprises and manufacturers have cooperated with colleges and universities and research institutions, which also provides a solid foundation and unlimited impetus for the development of casting solidification simulation in China.

With the popularity of computers, casting software at home and abroad has gradually become popular, and is increasingly used in production practice to simulate and analyze the casting process. Its function and scope of use have also been further strengthened and expanded, so as to simulate the filling and solidification process and predict defects such as insufficient pouring, cold shuts, pores, air entrapment, inclusions, shrinkage porosity and shrinkage cavities and cracks under the guidance of casting theory and by means of computer technology.

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