Joint-stock Company “tvel”

Antonina Vasilevna Nikulina

Vladimir Andreevich Markelov

Vladimir Vladimirovich Novikov

Vadim Nikolaevich Solovev

Mihail Nikolaevich Sablin

Kirill Vladimirovich Ozhmegov

Nadezhda Konstantinovna Filatova

Sergei Vladimirovich Chineikin

Sergei Vasilevich Lozitckii

Aleksandr Gusmanovich Ziganshin

Aleksandr Anatolevich Kabanov

Method of manufacturing zirconium alloy tubular products containing (wt. %): niobium—0.9-1.7; iron—0.04-0.10; oxygen—0.03-0.10; silicon—less than 0.02, carbon—less than 0.02, and zirconium—as the base of the alloy. This includes an ingot melting by multiple vacuum arc remelting, mechanical processing of the ingot, heating, hot working of the ingot, subsequent mechanical processing for the production of tubular billets, heat treatment of the tubular billets, application of a protective coating and heating to a hot pressing temperature, hot pressing, removal of the protective coating, multi-stage cold radial forging, vacuum thermal treatment, multiple cold rolling runs with a total deformation degree of 50-80-% per run and a tubular coefficient of Q=1.0-2.7 with intermediate vacuum thermal treatment after each cold rolling operation, and final vacuum thermal treatment of the resulting tubular products carried out at the final size with subsequent final finishing operations.

Method of manufacturing zirconium alloy tubular products

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Moscow, Russia

Antonina Vasilevna Nikulina