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2 389 580

(13)

(51)

IPC

B21D51/02(2009-01-01)

C21D7/04(2006-01-01)

B82B3/00(2006-01-01)

(21) (22)

Application

2008146754/02, 2008-11-26

(24)

Start date

2008-11-26

(22)

Actual filing date

2008-11-26

(45)

Published

2010-05-20

(72)

Inventor

Golenkov Vjacheslav AleksandrovichRadchenko Sergej Jur'EvichDorokhov Daniil Olegovich

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Orlovskij Gosudarstvennyj Tekhnicheskij Universitet"

METHOD TO PRODUCE METAL SLEEVES WITH GRADIENT SUB MICRO- AND NANO-CRYSTALLINE STRUCTURES Russian patent published in 2010 - IPC B21D51/02 C21D7/04 B82B3/00

Abstract RU 2389580 C1

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly to methods of producing sleeves with sub micro- and nano-crystalline structures. Hollow workpiece is produced with its inner surface to be processed by multiple axial reciprocation of male mould with simultaneous rolling and squeezing of outer surface in roller-type lower die. Roller-type lower die is rotated with angular speed of rotation equal to ω_ld. Note here that collet is rotated with constant speed of ω_c=0,001ω_ld.

EFFECT: higher efficiency.

1 dwg

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RU 2 389 580 C1

Authors

Golenkov Vjacheslav Aleksandrovich

Radchenko Sergej Jur'Evich

Dorokhov Daniil Olegovich

Dates

2010-05-20—Published

2008-11-26—Filed