The borated stainless steel hexagonal seamless tube for nuclear fuel storage and transportation racks of VVER nuclear power technology in Russia, jointly developed by SXTG Stainless Steel Technology Group, China Nuclear Power Research and Design Institute, and China Nuclear Power Engineering Corporation has been successfully put into production, marking the complete completion of the engineering preparation process for this product by the Chinese joint research and development team.
borated stainless steel has good thermal neutron absorption and γ The radiation shielding properties of this material are widely used in nuclear energy development fields such as reactor shielding, spent fuel pool storage racks, nuclear fuel transfer containers, and spent fuel reprocessing. It is an important material in this field.
Due to the addition of a large amount of boron, the forming ability of borated stainless steel is extremely poor, and the smelting difficulty is extremely high. This is also the main reason why all such materials rely on imports at present.
In order to break the foreign technological monopoly and achieve the localization of this material, the joint research and development team has joined forces to conduct comprehensive technical cooperation and exchange in testing, manufacturing and other aspects.
After a year and a half of research, they have finally broken through and mastered a series of key technologies for borated stainless steel pipes, including melting, ingot casting, forging, pipe making, and hexagonal forming. The sample tube forming process has been put into operation, and the product has been smoothly launched, laying a solid foundation for the comprehensive localization of borated stainless steel.