METHOD OF STEPPING ROLLING Russian patent published in 2009 - IPC B21B1/42 

FIELD: metallurgy.

SUBSTANCE: method includes blank clamping by two couples of mutually perpendicular rollers, with in pairs shifted axis of its rotation lengthways to rolling axis, vectors of circumferential speeds of rollers couples from the side of rolling axis are directed into the different sides, manufacturing operation of roll-out forward cone of deformation, established rolling process, roll of back body of deformation at alternate deformation by rollers couples, relative movement of blank and rollers axis with increasing of relative movement of blank and rollers axis, circumferential velocity vectors of which are directed to the side of finished profile, over the relative movement between workpiece and rollers axis, circumferential velocity vectors of which are directed into the side of initial blank. Exclusion of usage of setting device for feeding of blank in each cycle of rolling is provided ensured by roll of forward cone of deformation is implemented the second by rolling motion by couple of rollers, roll of back cone of deformation is implemented the first by rolling motion by couple of rollers, during the passage from one manufacturing operation to the other sense of rotation of roller couples is changed.

EFFECT: weight reduction of manufacturing equipment for stepping rolling of sectional bars.

2 dwg