Method of monitoring of resistance welding quality of nuclear fuel rod
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United States of America Patent
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Jul 23, 2019
Grant Date -
Oct 12, 2017
app pub date -
Oct 20, 2016
filing date -
Apr 12, 2016
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Abstract
A method of monitoring in real time pressure resistance welding of a cladding tube and an end plug. The method includes: a first step of detecting welding information including voltage, current, and welding force in a process of pressure resistance welding of a cladding tube and an end plug; a second step of comparing static factors obtained by calculating effective values for the welding information with predetermined reference values, respectively; a third step of calculating dynamic factors for the welding information including the gradient of instantaneous welding force, when the reference values are satisfied in the second step; and a fourth step of determining whether there is defect or not in welding quality by comparing the dynamic factors.
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