METHOD OF PRODUCING TUBULAR PRODUCTS FROM A ZIRCONIUM-BASED ALLOY

• Main Authors: MARKELOV, Vladimir Andreevich, LOZITCKII, Sergei Vasilevich, KABANOV, Aleksandr Anatolevich, OZHMEGOV, Kirill Vladimirovich, ZIGANSHIN, Aleksandr Gusmanovich, SOLOVEV, Vadim Nikolaevich, CHINEIKIN, Sergei Vladimirovich, SABLIN, Mihail Nikolaevich, NOVIKOV, Vladimir Vladimirovich, NIKULINA, Antonina Vasilevna, FILATOVA, Nadezhda Konstantinovna
• Format: Patent
• Language: English; French; German
• Published: 24.01.2024
• Subjects: ALLOYS; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention is referred to the nuclear technical field, particularly to production of zirconium alloy tubular products used as the structural components of the core in water-cooled nuclear reactors, including the reactors of VVER and PWR type.The manufacturing method for the tubular products made of zirconium-based alloy includes the ingot melting by multiple vacuum arc remelting, mechanical processing of the ingot, heating, multi-stage hot forging of the ingot for production of the forged piece, subsequent mechanical processing of the forged piece for production of the round-profile blank, manufacturing of tubular billets, their quenching and tempering, application of the protective coating and heating to the hot pressing temperature, hot pressing, removal of the protective coating, vacuum thermal treatment, multiple cold rolling in order to produce tubular products, with intermediate vacuum thermal treatment after each cold rolling, and the final vacuum thermal treatment is carried out at the final size with subsequent final finishing operations.The technical result is processibility of the material at all stages of hot and cold pressure shaping applied in the course of tubular product manufacturing as well as high strength characteristics and corrosion resistance of the tubular products.