TECHNOLOGICAL TOOL OF ROLLING MILL FOR MAKING CIRCULAR SECTIONS Russian patent published in 1994 - IPC

FIELD: metal pressure forming. SUBSTANCE: tool has working rolls, mounted in drums with an inclination by a rolling-out angle, turned together with the drums around an axis of the drum by a feed angle, arranged around a rolling process through 120 degrees and having sizing portions, whose generatrix is inclined relative to the axis of the drum by an acute angle, whose sum with the rolling-out angle is no less than 90 degrees. EFFECT: enhanced serviceability of tool. 1 cl, 1 dwg, 1 tbl