METHOD OF SLITTING STEEL WITH THICKNESS 2-6 MM Russian patent published in 1997 - IPC

FIELD: technique of dressing rolled sheets, namely slitting coiled strip steel by circle shears in specialized aggregates. SUBSTANCE: method of slitting by means of circle shears mounted on axles with predetermined overlapping along vertical line includes trimming lateral sides of initial strip blank at applying efforts to it. At slitting strip steel with thickness h= 2-6 mm by two different-width strips b and B, overlapping value of trimming knives at side of narrow strip (mutual displacement of edge and narrow strip along vertical line to opposite sides) is increased and at opposite side it is decreased by 25-30% of predetermined value. Simultaneously horizontal strip braking effort T is applied to outer edge of narrow strip. T=(0.02-0.025)σ_bxh²xB/b, where σ_b-yielding strength of steel, B > b. EFFECT: simplification of method. 2 dwg