Precision parts are an important part of nuclear fuel components. The production of nuclear fuel component parts is not simple mechanical processing, especially in the production of Hualong No. 1 nuclear fuel component parts, many parts are innovatively designed, unique materials, structures, detailed dimensions, etc., and SCZH Precision Technology Group's previous production The products are very different. In the face of new materials and new designs, new manufacturing technologies must be developed, and even the production of some parts and components requires new development in equipment and process design.
SCZH has a complete design and production capacity of precision parts and components, and can produce hundreds of parts and components required for nuclear fuel assemblies in nuclear power plants. Beginning in 2018, SCZH has undertaken the production tasks of the world’s first reactor of Hualong One and two other types of PWR nuclear fuel assemblies and related components. Almost every day, more than 20 kinds of hundreds of parts are produced online, and the precision tube seat production line alone has 5 different types of tube sockets processed online at the same time.
The quality of nuclear fuel components is directly related to the safe and stable operation of nuclear power plants. Therefore, in order to ensure the fineness and accuracy of parts and components, higher requirements are put forward for workshop quality management.
The processing of each part is very delicate, it feels not only to make industrial products, but also handicrafts. "SCZH's CTO Li Hua said that the precision of each part of Hualong No. 1 nuclear fuel element is high, and many are accurate to micrometers.