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2 391 161

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(51)

IPC

B21C1/24(2006-01-01)

(21) (22)

Application

2008125282/02, 2008-06-24

(24)

Start date

2008-06-24

(22)

Actual filing date

2008-06-24

(45)

Published

2010-06-10

(72)

Inventor

Serebrjakov Andrej Vasil'EvichBurkin Sergej PavlovichSerebrjakov Aleksandr Vasil'EvichPrilukov Sergej BorisovichLadygin Sergej AleksandrovichMarkov Dmitrij VsevolodovichTsindrakov Aleksej Sergeevich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Novotrubnyj Zavod"

METHOD OF FABRICATING THIN-WALLED PIPES Russian patent published in 2010 - IPC B21C1/24

Abstract RU 2391161 C2

FIELD: mechanics.

SUBSTANCE: invention relates to improvement of accuracy in dimensions of precision pipes sections, for instance from corrosion-resistant steels for shells of fuel elements in nuclear reactors. Method includes pipe drawing in cone draw die on fixed cylindrical mandrel. Stability of pipes dimensions and reduction of elastic and thermal deformation are provided by the fact that drawing of pipe is carried out with value of drawing coefficient along section of pipe λ in the range 1.25≤λ≤1.48, at the same time coefficient of drawing along pipe wall λ_s makes 0.90λ≤λ_s≤0.94λ.

EFFECT: increased accuracy of precision pipes section dimensions.

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RU 2 391 161 C2

Authors

Serebrjakov Andrej Vasil'Evich

Burkin Sergej Pavlovich

Serebrjakov Aleksandr Vasil'Evich

Prilukov Sergej Borisovich

Ladygin Sergej Aleksandrovich

Markov Dmitrij Vsevolodovich

Tsindrakov Aleksej Sergeevich

Dates

2010-06-10—Published

2008-06-24—Filed