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RU

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2 346 782

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C2

(51)

IPC

B21H8/00(2006-01-01)

C21D9/46(2006-01-01)

(21) (22)

Application

2007106380/02, 2007-02-19

(24)

Start date

2007-02-19

(22)

Actual filing date

2007-02-19

(45)

Published

2009-02-20

(72)

Inventor

Seryj Vladimir Mikhajlovich

(73)

Holder

Seryj Vladimir Mikhajlovich

METHOD FOR MANUFACTURE OF SPRING PLATES Russian patent published in 2009 - IPC B21H8/00 C21D9/46 

Abstract RU 2346782 C2

FIELD: technological processes.

SUBSTANCE: central opening is made in billet. Billet is heated and tempered to required hardness. Then billet is curved by means of impact-step treatment along external side across billet.

EFFECT: lower power intensity of method and simplification of technological process, improvement of springs operational durability.

1 dwg

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RU 2 346 782 C2

Authors

Seryj Vladimir Mikhajlovich

Dates

2009-02-20—Published

2007-02-19—Filed

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