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2 451 573

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(51)

IPC

B21K21/04(2006-01-01)

B21J5/00(2006-01-01)

(21) (22)

Application

2010127389/02, 2010-07-02

(24)

Start date

2010-07-02

(22)

Actual filing date

2010-07-02

(45)

Published

2012-05-27

(72)

Inventor

Andreev Vladimir NikolaevichDragunskikh Igor' ViktorovichZiatdinov Irek FailovichMikhajlov Vladimir GennadievichIgnat'Ev Vladimir PavlovichKargin Vitalij AlekseevichKhasanov Radik Shavkjatovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Ob"Edinenie Imeni Sergo"

METHOD OF PRODUCING HOLLOW FORGINGS Russian patent published in 2012 - IPC B21K21/04 B21J5/00

Abstract RU 2451573 C2

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to cold forming. Proposed method comprises forming initial billet, preliminary and final forming of central ledge. Said preliminary forming of central ledge is carried out in swaging initial billet by recessed male die. Central ledge shape and sizes are smaller than those of finished part central ledge.

EFFECT: higher quality.

7 dwg

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RU 2 451 573 C2

Authors

Andreev Vladimir Nikolaevich

Dragunskikh Igor' Viktorovich

Ziatdinov Irek Failovich

Mikhajlov Vladimir Gennadievich

Ignat'Ev Vladimir Pavlovich

Kargin Vitalij Alekseevich

Khasanov Radik Shavkjatovich

Dates

2012-05-27—Published

2010-07-02—Filed