STEP-BY-STEP ROLLING METHOD Russian patent published in 2014 - IPC B21B1/42 

FIELD: metallurgy.

SUBSTANCE: method involves deformation of a workpiece by direct and reverse travel at back-and-forth movement of axes of rolls and free movement of the workpiece along the rolling axis to the side opposite to direction of movement of axes of rolls during deformation of the workpiece, forced movement of the workpiece towards a ready-made channel during formation of a gap between the workpiece and the working surface of rolls. Reduction of axial forces in the workpiece at its deformation by reverse travel is provided owing to the fact that forced movement of the workpiece prior to reverse travel is performed additionally by the value of free movement of the workpiece; with that, free movement of the workpiece does not exceed m×(λ-1), where λ - ratio of cross-sectional areas of the initial workpiece and the ready-made channel; m - design supply.

EFFECT: improving efficiency of a step-by-step rolling process and reliability of process equipment.

6 dwg