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2 019 329

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IPC

(21) (22)

Application

4776915/27, 1990-01-03

(22)

Actual filing date

1990-01-03

(45)

Published

1994-09-15

(72)

Inventor

Svidovskij F.G.Samusev S.V.Кazakov А.R.Рotapov I.N.Рavlova М.А.

(73)

Holder

Vserossijskij Nauchno-Issledovatel'Skij, Proektno-Konstruktorskij I Tekhnologicheskij Institut Kabel'Noj Promyshlennosti

METHOD OF MANUFACTURING WELDED TUBES AND CABLE SHEATHS Russian patent published in 1994 - IPC

Abstract RU 2019329 C1

FIELD: manufacturing of welded tubes. SUBSTANCE: method involves bending tubular billet in driven passes by a predetermined law depending on the quantity of passes and tube curvature P of adjacent passes; setting P of nondriven passes equal to P of previous driven pass and changing kinematic parameters of driven passes in such a way, that total contact area of drawing of working tool with tube in each pass is contact and drawing force is uniform. EFFECT: increased quality of ready tubes by providing uniform drawing force in all driven passes of tube-forming mill. 11 dwg, 2 tbl

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RU 2 019 329 C1

Authors

Svidovskij F.G.

Samusev S.V.

Кazakov А.R.

Рotapov I.N.

Рavlova М.А.

Dates

1994-09-15—Published

1990-01-03—Filed