METHOD FOR PRODUCTION OF WELDED PROFILE TUBES Russian patent published in 1995 - IPC

Abstract RU 2035247 C1

FIELD: electric welding of tubes. SUBSTANCE: method involves treatment of billets on tube-forming mill, welding of longitudinal butt of edges and regulating the position of weld with successive sizing of tubes according to their diameters on the shaping mill. The tube is deformed by the rolls whose radius is 1.1-1.25 of that of the tube. The value of force applied amounts to 0.5-0.75 of that of deformation when sizing. The weld position is regulated by turning rollers at an angle not exceeding that obtained by the following formula: arcsin π/R_т.. EFFECT: higher quality of welded tubes. 1 cl, 2 dwg

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RU 2 035 247 C1

Authors

Punin V.I.

Razin V.F.

Ovcharov M.S.

Baranov V.N.

Dates

1995-05-20—Published

1992-09-02—Filed