The wall thickness of 100 tonnuclear spent fuel container is 520 mm, the hot spot is over 630 mm, the heat capacity is large, and the heat dissipation condition is poor. Whether the simulation software can be used to optimize the of nodular cast iron nuclear spent fuel container and guide the production; whether the castings obtained under the existing domestic technical conditions can meet the performance indexes of foreign containers are the problems to be studied and solved in this project.
1.According to the structural characteristics of 100 ton ductile iron nuclear spent fuel container, the casting process is designed. The solidification process of ductile iron nuclear spent fuel container under different cooling conditions such as sand mold, sand mold chill and metal mold is simulated and analyzed by using simulation software, and the casting process of ductile iron nuclear spent fuel container is preliminarily determined;
2.The 45 ° sector test block was designed and the 45 ° sector test block experiment was carried out. The temperature curves of different temperature measurement points of the 45 ° sector test block were successfully collected by using the self-developed 16 channel temperature measurement device. The simulation results are basically consistent with the measured data, which proves that the simulation software can guide the process optimization of large ductile iron nuclear spent fuel container; dissect the 45 ° sector test block and analyze its composition Grasp the quality control measures of 100 ton ductile iron nuclear spent fuel container;
3.The casting process of 100 ton ductile iron nuclear spent fuel container was optimized and summarized.