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2 402 392

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(51)

IPC

B21B19/02(2006-01-01)

(21) (22)

Application

2009110342/02, 2009-03-20

(24)

Start date

2009-03-20

(22)

Actual filing date

2009-03-20

(45)

Published

2010-10-27

(72)

Inventor

Tartakovskij Boris IgorevichFadeev Mikhail MikhajlovichAnanjan Vladimir VillievichShirjaev Vladimir Kuz'MichZhuravlev Vladimir MikhajlovichPermjakov Igor' L'VovichLjaskovskij Andrej Anatol'Evich

(73)

Holder

Oao Trubnyj Zavod"

METHOD OF PRODUCING SEAMLESS THIN-WALL PIPES Russian patent published in 2010 - IPC B21B19/02

Abstract RU 2402392 C1

FIELD: process engineering.

SUBSTANCE: invention relates to pipe rolling, particularly to producing thin-wall pipes at three-roll sheeting mill of Assel helical rolling. Proposed method comprises piercing the billet into sleeve at helical rolling mill rolls on rolling billet rear end in direction opposite the rolling direction and billet pay-out at Assel mill. Note here that maximum mandrel travel makes 0.8 D_bil while maximum taper of the sleeve rear end wall makes 0.08 D_bill.

EFFECT: ruling out formation of three-face pipe socket and increased yield of suitable products.

1 dwg

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RU 2 402 392 C1

Authors

Tartakovskij Boris Igorevich

Fadeev Mikhail Mikhajlovich

Ananjan Vladimir Villievich

Shirjaev Vladimir Kuz'Mich

Zhuravlev Vladimir Mikhajlovich

Permjakov Igor' L'Vovich

Ljaskovskij Andrej Anatol'Evich

Dates

2010-10-27—Published

2009-03-20—Filed