MANUFACTURING METHOD OF CONTOUR FORM PROFILE Russian patent published in 2009 - IPC B21B17/14 B21C37/15 

FIELD: metallurgy.

SUBSTANCE: it is implemented delivery of blank to supply roller bed and its straining at several stages in rollers of several placed stands with keeping of perimetre and thickness of wall. Preliminarily it is cogged blank by contour for receiving of ribs, following reduction there are received two locating reference points in multirolled stands, it is finished by following reduction forming of two rest locating reference points of irregular shape. It is implemented rolling of flap of triangular shape and there are received grooving on vertical butt post and joggle. It is implemented final rolling of flap of triangular shape and final calibration of geometrics in stands with different angular velocity of calibrating elements of rollers with usage of rolling friction on effective area of rollers elements in places of maximal disparity of its angular velocities.

EFFECT: it is reduced rollers wear, increased its durability, and also increases accuracy of manufacturing of contour form profile from hollow welded blank of round shape.

4 cl, 5 dwg, 1 ex