FIELD: nuclear engineering; welding tubular cans of fuel elements to plugs.
SUBSTANCE: proposed method for sealing fuel element includes feeding can and plug to welding chamber, creating atmosphere in this chamber capable of shielding welded joint from oxidation, compressing can and plug ends followed by their welding using for the purpose nonsplit chamber whose unconfined space is smaller than that of can interior, feeding plug to welding chamber for its welding to can end, shielding atmosphere being permanently maintained within chamber. Shielding atmosphere is created by continuously blasting chamber with shielding gas using directly welded parts and pre-evacuation of enclosed space formed in the process, followed by its feeding with inert gas.
EFFECT: enhanced welding productivity, weld quality, and, hence, fuel element quality.
4 cl, 3 dwg
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