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2 437 733

(13)

(51)

IPC

B21C1/00(2006-01-01)

(21) (22)

Application

2010131178/02, 2010-07-26

(24)

Start date

2010-07-26

(22)

Actual filing date

2010-07-26

(45)

Published

2011-12-27

(72)

Inventor

Churbanov Valentin IgorevichPanova Ksenija Jur'EvnaBarichko Boris VladimirovichVydrin Aleksandr Vladimirovich

(73)

Holder

Rossijskaja Federatsija, Ot Imeni Kotoroj Vystupaet Ministerstvo Promyshlennosti I Torgovli Rossijskoj Federatsii Rossii)

PRODUCTION OF SMALL-DIAMETRE TUBES Russian patent published in 2011 - IPC B21C1/00

Abstract RU 2437733 C1

FIELD: process engineering.

SUBSTANCE: invention aims at increasing efficiency of cold-rolled tube production. Method of producing small-diametre tube with OD-to-wall thickness ratio of 2.5:5.0 comprises cold-rolling at cold-rolling mill stands and subsequent drawing to preset sizes. Drawing is performed in wire roller drawing die without die holder. Note here that tube size for drawing is set by mathematical relationship that allows for tube diametre shrinkage and some other parameters.

EFFECT: decreased number of drawing cycles and metal consumption factor.

1 tbl

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RU 2 437 733 C1

Authors

Churbanov Valentin Igorevich

Panova Ksenija Jur'Evna

Barichko Boris Vladimirovich

Vydrin Aleksandr Vladimirovich

Dates

2011-12-27—Published

2010-07-26—Filed