Analysis of Foreign Substance Flow within the Weld Joint through Simulation in Pressurized Water Reactor Nuclear Fuel Rods

被引:2
|
作者
Na, Taehyung [1 ]
Kim, Taehyeon [1 ]
Kim, Yongdeog [1 ]
机构
[1] Korea Hydro & Nucl Power Cent Res Inst, Republ Kore, 70 Youseong daero 1312, Daejeon 34101, South Korea
来源
APPLIED SCIENCES-BASEL | 2023年 / 13卷 / 15期
关键词
foreign substance flow; nuclear fuel rods; resistance butt welding; zirconium alloy; PLUG RESISTANCE WELDMENT;
D O I
10.3390/app13158905
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The welding of end plugs to cladding tubes is a critical process in the manufacture of pressurized water reactor (PWR) nuclear fuel rods. The resistance butt welding method is commonly used for this purpose in production. In this paper, we present an analysis of the flow of foreign substances within the weld joint during the tube-cap welding process of PWR nuclear fuel rods, using SORPAS 2D software. The welding process generates foreign substances such as oxide scales, welding fumes, and spatters, which can negatively impact the quality of the weld. Additionally, carbide-based ceramic materials with higher melting temperatures than the base metal have been found within the weld joint in some cases, which can also affect the quality of the weld. To simulate the intrusion of foreign substances with higher melting temperatures than the base material (zirconium alloy) during welding, we conducted a simulation and analyzed the flow of foreign substances. Based on this study, we expected to enhance the reliability and stability of the tube-cap welding process of PWR nuclear fuel rods.
引用
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页数:11
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