1.For the first time in China, the research and production of 100 tonnuclear spent fuel container was carried out, and the metal mold was proposed;
2.The temperature field and mold temperature curve of the 45 ° sector specimen were successfully measured by the self-developed 16 channel temperature measurement system. By analyzing the collected temperature curve, it is proposed that the final solidification position of the large section ductile iron spent fuel container is not the geometric center position, but the inner quarter position. It is also found that the solidification temperature of the large section ductile iron is not 1147 ° C in theory But in the temperature range of 1147 ° C to 1080 ° C;
3.The simulation results are basically consistent with the actual temperature measurement results, which proves that the simulation software can be used to optimize the casting process of large section ductile iron nuclear spent fuel container;
4.Under the domestic production conditions, the castings obtained can meet the technical specifications of foreign ductile iron nuclear spent fuel containers.