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2 360 759

(13)

(51)

IPC

B21D22/14(2006-01-01)

(21) (22)

Application

2007122082/02, 2007-06-13

(24)

Start date

2007-06-13

(22)

Actual filing date

2007-06-13

(45)

Published

2009-07-10

(72)

Inventor

Kuraev Valentin VladimirovichShirjaev Dmitrij AleksandrovichRozdol'Skaja Ol'Ga VladimirovnaSmirnov Andrej Vasil'EvichKolchin Aleksandr Sergeevich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Ob"Edinenie Zavod" Ehkhz")

MANUFACTURING METHOD OF CYLINDRICAL SHELLS Russian patent published in 2009 - IPC B21D22/14

Abstract RU 2360759 C2

FIELD: metallurgy.

SUBSTANCE: invention can be used at manufacturing of cylindrical shells by rotary drawing with thinning from martensite - ageing steels with wall thickness ratio. Blank is installed on mandrel with interference. Rotary drawing is implemented with specified degree of deformation and with value of relative interference.

EFFECT: improvement.

2 dwg

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RU 2 360 759 C2

Authors

Kuraev Valentin Vladimirovich

Shirjaev Dmitrij Aleksandrovich

Rozdol'Skaja Ol'Ga Vladimirovna

Smirnov Andrej Vasil'Evich

Kolchin Aleksandr Sergeevich

Dates

2009-07-10—Published

2007-06-13—Filed