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2 084 300

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C1

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IPC

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Application

94038230/02, 1994-10-10

(22)

Actual filing date

1994-10-10

(45)

Published

1997-07-20

(72)

Inventor

Lesnichij V.F.Blinov Ju.I.Bezzubov A.V.Pykhov S.I.Kozlovskij A.M.Suvorov V.I.Khokhlov N.P.Jakovlev V.V.Fedorin V.R.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Nauchno-Issledovatel'Skij Institut Trubnoj Promyshlennosti"Aktsionernoe Obshchestvo Otkrytogo Tipa

LINE FOR MAKING PRECISE TUBES Russian patent published in 1997 - IPC

Abstract RU 2084300 C1

FIELD: ferrous metallurgy, namely production of electrically welded straight-seam precise tubes. SUBSTANCE: line includes arranged according to manufacturing process and mutually connected by transporting means strip uncoiler, butt welding machine, trimming apparatus, apparatus for shaping tubes, welding unit, induction heating apparatus, reducing-sizing mill and unit for sizing tubes. Flow line of trimming apparatus is provided with device for stabilizing strip geometry. Reducing-sizing mill includes at least four-high stands mounted with possibility of rotation of each stand relative to previous one in plane normal relative to mill axis by angle alpha=90 degrees/n, where n -number of stands. Combination-type induction heating apparatus includes linear and annular inductors. Unit for sizing tubes has at least two stands. EFFECT: enhanced reliability for providing necessary accuracy degree of tubes. 5 dwg

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RU 2 084 300 C1

Authors

Lesnichij V.F.

Blinov Ju.I.

Bezzubov A.V.

Pykhov S.I.

Kozlovskij A.M.

Suvorov V.I.

Khokhlov N.P.

Jakovlev V.V.

Fedorin V.R.

Dates

1997-07-20—Published

1994-10-10—Filed

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