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2 067 507

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IPC

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Application

95104282/02, 1995-03-23

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Actual filing date

1995-03-23

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Published

1996-10-10

(72)

Inventor

Popov V.A.Leshchinskij Ju.M.Kozlov M.Ju.Popov N.E.Shikunov V.V.Kijashko P.S.Oparin A.A.Konovalov A.A.Toporov V.N.V'Jugina L.A.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa

METHOD FOR SCREW ROLLING OF PIPES Russian patent published in 1996 - IPC

Abstract RU 2067507 C1

FIELD: pipe rolling; applicable in production of seamless hot-rolled pipes by screw rolling. SUBSTANCE: used in rolling by screw rolling mill is sleeve-shaped billet with thickened wall to bottom and apposite end of variable diameter along the billet length. Billet is doformed on the held mandrel for, at least two passes up to attaining the pipe diameter-to-pipe wall thickness ratio within 15-25. It is expediently to use pipe billet in form of utilized shell bodies. EFFECT: higher efficiency. 2 cl

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RU 2 067 507 C1

Authors

Popov V.A.

Leshchinskij Ju.M.

Kozlov M.Ju.

Popov N.E.

Shikunov V.V.

Kijashko P.S.

Oparin A.A.

Konovalov A.A.

Toporov V.N.

V'Jugina L.A.

Dates

1996-10-10—Published

1995-03-23—Filed

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