Effect of Laser Welding Quality of Nuclear Reactor Coolant Pump Can on Eddy Current Losses

Abstract:

The Nd:YAG laser welding experiments of Hastelloy C-276 was presented and the results of experiments were discussed which reflect the rise of electric resistivity of the sample. In addition, a mathematic model of 2-D nonlinear eddy current field for motor of the nuclear reactor coolant pump with the Hastelloy C-276 can was simulated which provides the concrete effect of electric resistivity change on the eddy current losses of cans. It was found that the eddy current losses of the motor can were decreased as the increase of electric resistivity of can. Then, the advantage of laser welding on the molding of motor can was discussed which not only does not destroy the electric performance of Hastelloy C-276 but enhances it and declines the eddy current losses of can forming with it.

• Periodical: Advanced Materials Research (Volumes 154-155)
• Pages: 686-689
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.154-155.686
• Online since: October 2010
• Authors: Li Jia Jiang, Yu Quan Guo, Guang Yi Ma, Dong Jiang Wu
• Keywords: Canned Motor, Eddy Current Loss, Electric Resistivity, Finite Element Analysis (FEA), Laser Welding

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