STEP ROLLING METHOD Russian patent published in 2005 - IPC

FIELD: rolled stock production, namely processes for step rolling of merchant bars.

SUBSTANCE: method comprises steps of alternating deformation of strip by means of two mutually normal pairs of rolls uniformly rotating in the same direction while directing vectors of circumference speed of each roll pair at side of rolling axis to different sides; providing constant relative reciprocation motion of axes of rolls and strip at exceeding said relative motion during deformation of strip by means of pair of rolls whose circumference speed vectors are oriented to side of ready shape by value normalized by means of mathematical expression.

EFFECT: possibility for rolling out front deformation cone, after-rolling rear deformation cone without special apparatuses, lowered lengthwise dynamic efforts on strip, possibility for rolling strips with designed feed volume.

4 dwg