RU2010128448A

RU2010128448A - METHOD FOR PRODUCING WELDED PROFILE PIPES IN THE TESA LINE

Info

Publication number: RU2010128448A
Application number: RU2010128448/02A
Authority: RU
Inventors: Сергей Владимирович Самусев (RU); Сергей Владимирович Самусев; Владимир Васильевич Больдт (RU); Владимир Васильевич Больдт
Priority date: 2010-07-09
Filing date: 2010-07-09
Publication date: 2012-01-20
Also published as: RU2443486C1

Abstract

Способ изготовления сварных профильных труб в линии ТЭСА, включающий формовку полосы в цилиндрическую трубную заготовку, сварку кромок и профилирование сваренной заготовки в валковых калибрах, отличающийся тем, что, с целью повышения качества готовых профилей, процесс осуществляется с равномерным уменьшением кривизны полок по наружной поверхности в поперечных сечениях профиля по зависимости: ! , ! где n - число клетей трубопрофильного стана; i - порядковый номер клети; Ri - радиус полок трубной заготовки в i-клетях трубопрофильного стана, мм, ! при этом заготовку обжимают равномерно на участках мест изгиба в клетях стана с величиной обжатий, определяемой из зависимости: ! , ! где Σε - суммарное обжатие на участках мест изгиба заготовки по всем клетям трубопрофильного стана, необходимое при профилировании, %; Δεi - обжатие на участках мест изгиба трубной заготовки в i-клетях трубопрофильного стана, %; n - число клетей стана. A method of manufacturing welded profile pipes in a TESA line, including forming a strip into a cylindrical pipe billet, welding edges and profiling a welded billet in roll calibers, characterized in that, in order to improve the quality of finished profiles, the process is carried out with a uniform decrease in the curvature of the shelves on the outer surface in cross-sections of the profile according to:! ! where n is the number of stands of the tube mill; i is the serial number of the stand; Ri is the radius of the shelves of the pipe billet in the i-stands of the tube mill, mm,! at the same time, the workpiece is crimped evenly on the sections of the bending places in the mill stands with the amount of compression determined from the dependence:! ! where Σε is the total compression in the sections of the bending areas of the workpiece for all stands of the tube mill, necessary for profiling,%; Δεi - compression at the sites of bending of the billet in the i-stands of the tube mill,%; n is the number of mill stands.

Claims

A method of manufacturing welded profile pipes in a TESA line, including forming a strip into a cylindrical pipe billet, welding edges and profiling a welded billet in roll calibers, characterized in that, in order to improve the quality of finished profiles, the process is carried out with a uniform decrease in the curvature of the shelves on the outer surface in cross sections of the profile according to:

,

where n is the number of stands of the tube mill; i is the serial number of the stand; R _i - the radius of the shelves of the tube stock in the i-stands of the tube mill, mm,

while the workpiece is crimped evenly in areas of bending places in the mill stands with the size of the compression, determined from the dependence:

,

where Σε is the total compression in the sections of the bending areas of the workpiece for all stands of the tube profile mill, necessary for profiling,%; Δε _i - compression at the sites of bending of the billet in the i-stands of the tube mill,%; n is the number of mill stands.