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2 025 161

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C1

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IPC

(21) (22)

Application

5060729/27, 1992-07-07

(22)

Actual filing date

1992-07-07

(45)

Published

1994-12-30

(72)

Inventor

Kazakevich I.I.Kazakevich D.I.Shelement'Ev V.A.Rjabikhin N.P.

(73)

Holder

Aktsionernoe Obshchestvo Zavod Tjazhelogo Mashinostroenija"

METHOD OF MANUFACTURE OF THIN-WALLED PIPES Russian patent published in 1994 - IPC

Abstract RU 2025161 C1

FIELD: manufacture of thin-walled pipes. SUBSTANCE: deformation of hollow billet is performed on the mandrel with the aid of set of revoling heads arranged in succession. Revolving heads have rolling solids of revolution at relationship of specific energy in centers of deformation determined by the relation given in the formula in the description. EFFECT: enhanced reliability. 2 dwg

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RU 2 025 161 C1

Authors

Kazakevich I.I.

Kazakevich D.I.

Shelement'Ev V.A.

Rjabikhin N.P.

Dates

1994-12-30—Published

1992-07-07—Filed

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