| 摘要 |
FIELD: energy.SUBSTANCE: invention relates to atomic power engineering and can be used in making fuel elements for nuclear reactors. Fuel elements sealing method includes argon-arc welding of shell with plug from high-chromium steel, fuel element equipment with fuel, welding of second plug to shell other end, thermal treatment of weld joints. In welded joint zone weld metal is formed, consisting of ferrite phase, resistant to cracks formation and does not requiring further thermal treatment of weld joints. At that, for formation of ferrite phase ratio is selected: volume of ferrite class material to volume of ferritic-martensitic class material ≥ 0.18. Selected are welding modes, which enable to obtain required phase composition during weld metal formation.EFFECT: required quality of welded joints, simplification of fuel elements making process.3 cl, 1 dwg, 2 tbl |
