METHOD OF MAKING CHANNEL SECTION Russian patent published in 1996 - IPC

FIELD: metal pressure forming, metal consuming industry branches. SUBSTANCE: method comprises steps of assembling identical blanks, had been rolled in rough two-roll grooved passes, in pairs along their outer faces of webs; performing their rolling in pairs in a common final symmetrical universal grooved pass in such a way, that ridges of vertical rolls of the above mentioned grooved pass provide formation of bluntings of outer angles between a flange and a web in order to receive necessary dimensions of chamfers of a ready article according to a drawing. EFFECT: enhanced accuracy of sections, intensified process of their production upon substantial enlarging of manufacturing possibilities of the method due to an increased assortment, including manufacture of precision limited-output of channel-like blanks. 1 cl, 1 dwg