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Otkrytoe Aktsionernoe Obschestvo “chepetskiy Mekhanichesky Zavod”

The Federal State Unitarian Enterprise “a.a. Bochvar All-russia Research Institute of Inorganic Materials”

Otkrytoe Aktsionernoe Obschestvo "chepetsky Mekhanichesky Zavod"

Oao " Chepetsky Mekhanichesky Zavod"

Joint Stock Company Chepetsky Mechanical Plant

Oleg Viktorovich Bocharov

Vladimir Andreevich Kotrekhov

Sergey Yurievich Zavodchikov

Alexandr Konstantinovich Shikov

Anatoly Frantsevich Lositsky

Jury Pavlovich Shevnin

Antonina Vasilievna Nikulina

Lev Borisovich Zuev

Valentina Mikhailovna Arzhakova

Anatoliy Frantsevich Lositskiy

Vladimir Arsenievich Komissarov

Vladimir Nikolayevich Safonov

Sergey Valerjevich Krotkikh

Vasiliy Gennadjevich Devyatikh

Vladimir Alekseevich Veretennikov

Viktor Fedorovich Buchovtsev

Vladimir Fedorovich Seliverstov

Viktor Fedorovich Bukhovtsev

Sergei Jurievich Zavodchikov

Elena Nikolaevna Aktuganova

Vladimir Borisovich Philippov

Olga Stepanovna Tarasèvich

Vladimir Vladimirovich Rozhdestvenskiy

Olga Stepanovna Tarasevich

Vladimir Borisovich Filippov

Antonina Vasiljevna Nikulina

The invention relates to zirconium-based alloys and methods for manufacturing thereof and may be used in nuclear power engineering. The invention, as claimed, solves the task of obtaining a zirconium-based alloy used for manufacturing fuel rods for the nuclear reactor core, which possess improved engineering and operational properties. The said zirconium-based alloy contains its components in the following weight percent ratio: niobium&#x2014;0.9-1.1, oxygen&#x2014;0.05-0.09, zirconium&#x2014;the rest, and has the structure consisting of alpha-zirconium with oxygen irregularity zones not exceeding 30 nanometers, zirconium sub-oxide of non-stoichiometric composition, and beta-niobium. The inventive method of manufacturing the said alloy includes making stock of zirconium-containing material and niobium pentoxide as oxygen-containing and niobium-containing materials, stock treatment and manufacturing an ingot having the above composition.

Zirconium-niobium oxygen-containing alloy and method for producing said alloy

The present invention relates to a method for producing tubing products from binary and multicomponent zircon alloys, consisting in obtaining from an ingot previously submitted to a beta distortion process p source preparation, hot forming said source preparation at the subsistence temperature of zirconium alpha&plus;beta to get a tubular blank hardenning the latter at a temperature higher by 30 to 60&deg; to the temperature at which the alloy passes from an intermediary state zirconium alpha&plus;beta to the beta state of zirconium, mechanically processing, following by a tempering process at the subsistence temperature of alpha zirconium until the finished product is obtained, the cold distortion of the tubular product being effected with the following global stretching: &mgr; >100 for the finished products and &mgr; <50 for the TREX or SUPER TREX-type semi-finished tubular products, whereby at the first stage of the cold distortion the stretching &mgr;<2.0, &mgr;&equals;S /S (where S is the cross-sectional surface of the product before the milling process and S is the cross-sectional surface of the laminated tube) and &mgr;&equals;S /S (where S is the cross-sectional surface of the blank before the first milling process and S is the cross-sectional surface of the finished tube after the last milling process).

Method of manufacturing zirconium alloy tubes

This invention relates to the plastic metal working, particularly to tube rolling production and can be applied for tube cold pilgering on rolling machines. Tool design for tube cold pilgering, in which, in order to increase accuracy, surface quality, mechanical properties stability and decrease rolled tubes defects, the evolvement of external and profile of internal tooling are executed in the form of unified curve and represent geometrical location of various spline-functions key-points, whereupon along with geometrical parameters of spline-functions calculated curves the authors use factors defining physical-mathematical properties of rolled material and pilgering schemes.

Calibration of an instrument for the cold-rolling of tubes

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Moscow, Russia

Oleg Viktorovich Bocharov