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Research on manufacture technology of spherical fuel elements by dry-bag isostatic pressing
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作者 Zhen-Ming Lu Wen-Ke Zhang +5 位作者 Jie Zhang Xiang-Wen Zhou Kai-Hong Zhang Ma-Lin Liu Xuan-Ke Li Bing Liu 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2022年第10期79-89,共11页
The steady development of high-temperature gas-cooled reactors(HTRs) has increased the requirements for the production cost and quality of fuel elements. Green fuel element pressing is one of the key steps to increase... The steady development of high-temperature gas-cooled reactors(HTRs) has increased the requirements for the production cost and quality of fuel elements. Green fuel element pressing is one of the key steps to increase the production capacity. This paper proposes a proprietary vacuum dry-bag isostatic pressing(DIP) apparatus. The structural change of the matrix graphite powder during the DIP process was examined by analyzing the density change of the matrix graphite spheres with pressure. The soft molding process was simulated using the finite element method. The dimensional changes in the spheres during the pressing, carbonization, and purification stages were explored. The performance of the fuel matrix produced by the DIP method was comprehensively examined. The fuel matrix met the technical requirements and its anisotropy was significantly reduced. The DIP method can significantly improve both the production efficiency and quality of fuel elements. This will play a key role in meeting the huge demand for fuel elements of HTRs and molten salt reactors. 展开更多
关键词 Dry-bag isostatic pressing High-temperature gas-cooled reactor(HTR) spherical fuel element Finite element simulation Soft molding
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Manufacture of HTR Fuel Element
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作者 Shijiang, X. Chunhe, T. +3 位作者 Zhichang, X. Junguo, Zh. Xueliang, Q. Ende, L. 《High Technology Letters》 EI CAS 1995年第1期87-90,共4页
The HTR Fuel Element R & D Program,set in 1987,aims to develop the manufacturetechnology of HTR fuel element and to produce the fuel element for the first core of our 10MW experimental reactor.Now the work on labo... The HTR Fuel Element R & D Program,set in 1987,aims to develop the manufacturetechnology of HTR fuel element and to produce the fuel element for the first core of our 10MW experimental reactor.Now the work on laboratory scale is phased out.In this paper,the fuel element manufacture technology is described and the test results are given. 展开更多
关键词 High temperature reactor Coated fuel particles spherical fuel element Irradiation qualification
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