Influence of the heat transfer coefficient on the level of residual stress after heat treatment of the VVER-1000 reactor baffle
نویسندگان
چکیده
Background. Improvement of the methodology for computational analysis residual stresses in structural elements reactor is an integral part work when extending service life NPP power units.
 Objective. Determine value technological stress arising baffle a VVER-1000 during welding and postweld heat treatment according to austenitizing mode. To evaluate effect considering dependence transfer coefficient on temperature surface at cooling air treatment.
 Methods. Numerical modeling stress-strain state was carried out using finite element method.
 Results. It determined that process mode, are almost completely relaxed. Due high gradient rapid after heating austenitization, new rather formed zones with greatest metal thickness.
 Conclusions. Based results investigation, level determined, which should be considered calculating justification baffle.
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ژورنال
عنوان ژورنال: Mechanics and advanced technologies
سال: 2021
ISSN: ['2522-4255', '2521-1943']
DOI: https://doi.org/10.20535/2521-1943.2021.5.2.245074