Research status of foundry numerical simulation technology at China and abroad

In the 1940s, V. paschkis of Columbia University in the United States used a large-scale computer to simulate the heat conduction and heat flow in the process of casting solidification.

In 1962, Danish scholar K. forsund et al. First tried to use the finite difference method to calculate the temperature field of casting solidification process, and obtained very similar results with the experiment.

In 1965, J.G. Henzel and j.keveria, etc. of general company, used numerical calculation method to calculate the casting temperature field of 9-ton steam turbine cylinder, which was the first successful application of casting numerical simulation technology.

In 1966, R.D. pehlke team of University of Michigan developed a long-term plan for CAE simulation technology of casting solidification process.

In the 1970s, Flemings and others of MIT in the United States found that the numerical simulation can establish a model to predict the internal defects of castings by calculating the solidification temperature field, so as to predict the actual defects of castings such as shrinkage porosity and shrinkage cavity, which is of great significance for the practical production guidance of castings.

Since the 1970s, many countries in the world have studied the casting simulation technology. At the same time, in 1978, Guo Keren of Dalian University of technology took the lead in the numerical simulation of solidification temperature field of large-scale castings by using the finite difference method, and optimized the riser design. Zhang Yi and Wang Junqing of Shenyang Foundry Research Institute used numerical simulation method to calculate the casting and solidification process of 125MW turbine blade of Gezhouba hydropower station. The results are basically consistent with the actual situation.

Since the 1990s, dozens of research institutes in China, such as Tsinghua University, Huazhong University of science and technology, Shenyang Foundry Research Institute, Harbin University of technology, have carried out in-depth research on foundry CAE simulation technology, laying a foundation for China’s foundry CAE to a certain extent. Since then, China’s Foundry Technology is developing rapidly.