BLANK ROLLING METHOD Russian patent published in 2004 - IPC

FIELD: manufacture of rolled products, in particular, methods for rolling of blanks with increased stretch extent.

SUBSTANCE: method involves rolling blanks by means of pair of rolls rotating in opposite directions; providing deflection of vectors of circumferential speed of rolls from rolling axis in plane of said axis combined with turning of blank around rolling axis; providing alternate rolling process with intervals between reduction processes at relative reciprocation movement of rolls and blank rotation axes along axis of rolling resulting in formation of deformation cone on blank. Rolling process is performed with the use of rolls of variable radius, said rolls defining round pass, with angle of deflection of circumferential speed vector of each roll from rolling axis being regulated by mathematical dependence taking into account such parameters, as angle of turning of blank around longitudinal axis, roll shaft spacing, rolling radius of rolls, and length of deformation cone.

EFFECT: increased efficiency of step-by-step rolling process and elimination of employment of special tilting devices synchronized with rolling stand drive.

3 dwg