It plays an important role in the development of foundry products. According to the statistical data of a certain year in Table 1, at present, the casting exporting countries in the world are mainly China, the United States, Russia and Japan; It can be seen from table 2 that the casting quality in the Chinese market is at the middle level. Due to the increasing competitive pressure in the international market, the customers of the foundry have higher and higher requirements for the quality standard of castings.
| Different countries | Total output of castings / 10000 tons | Share of world Overview /% | Number of foundry operations | Number of people engaged |
| China | 1626 | 21.3 | 12000 | 80% of factories have less than 100 people |
| USA | 1181 | 15.4 | 3000 | 1 million+ people |
| Russia | 640 | 8.3 | — | — |
| Japan | 575 | 7.5 | 1400 | 70000 +people |
After China’s entry into WTO, the competition from the international market is becoming more and more fierce. In order to obtain recognition in the global casting field, higher requirements are needed for casting technology and technology. Therefore, according to the national conditions of China’s casting machine industry, independently research and develop new casting machine products with high efficiency, low consumption and practicality, so as to find a way with small investment and quick results in order to improve the backward situation of technical equipment in China’s casting industry. In metal casting production, controlling the solidification process of liquid metal is the key to affecting the quality and performance of castings.
| Countries | Material cost / USD ton | Labor / USD ton | Production efficiency per person / ton | Quality |
| China | 260 | 2 | 80-150 | A |
| Japan | 630 | 21 | 100-300 | A+ |
| korea | 350 | 5.4 | 100-260 | A |
| Mexico | — | 2 | 50 | B- |
| Brazil | 200 | 3.5 | 50 | B |
For the traditional casting industry, the design of casting process mainly depends on the experience of technicians. Generally, the castings are trial produced first, and the casting quality is analyzed. If there are problems, the process is improved repeatedly, and finally the correct process scheme is obtained. This will cause a waste of enterprise resources and increase the burden for enterprises. Therefore, it is necessary to formulate a correct process plan in the product development stage to eliminate casting defects and ensure the quality of castings. The temperature change of molten metal, solidification process and defect formation in traditional casting mold can not be observed. The development of computer simulation technology can simulate the mold filling and solidification process of castings, so as to predict casting defects and residual stress, and display the defect location through images; Through computer simulation technology, analyze the defects of castings and determine the correct process parameters. Especially for large castings, it is not allowed to modify the process scheme after trial production. Therefore, it is required to determine the correct process scheme before pouring.