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2 486 021

(13)

(51)

IPC

B21C1/24(2006-01-01)

(21) (22)

Application

2011153460/02, 2011-12-26

(24)

Start date

2011-12-26

(22)

Actual filing date

2011-12-26

(45)

Published

2013-06-27

(72)

Inventor

Orlov Grigorij AleksandrovichVagapov Evgenij Nikolaevich

(73)

Holder

Federal'Noe Gosudarstvennoe Avtonomnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Federal'Nyj Universitet Imeni Pervogo Prezidenta Rossii B.N. El'Tsina"

METHOD OF PIPE PRODUCTION Russian patent published in 2013 - IPC B21C1/24

Abstract RU 2486021 C1

FIELD: process engineering.

SUBSTANCE: proposed method comprises tube drawing at long moving holder via several rollers. Increased drawing speed and strain rating result from two-step drawing. Note here that at first step reduction is performed with reduction ratio of 1.3 to 2.1 while, at second step, gaging is carried out with reduction ratio of 1.05-1.15.

EFFECT: higher precision, stable physical properties.

1 tbl

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RU 2 486 021 C1

Authors

Orlov Grigorij Aleksandrovich

Vagapov Evgenij Nikolaevich

Dates

2013-06-27—Published

2011-12-26—Filed