Steel strip side trimmer, steel strip shearing device, steel strip shearing method, and steel strip manufacturing method

摘要

PROBLEM TO BE SOLVED: To prevent the occurrence of trim impression flaws on a product surface and to shear both edges in the width direction of a steel strip without forming a convex portion on the back surface of the steel strip. A shearing device, a method for shearing a steel strip, and a method for manufacturing a steel strip are provided. SOLUTION: A steel strip side trimmer 100 is provided on both sides in the width direction of a steel strip S conveyed on a pass line PL, and two sets of left and right upper circular blades 11 that shear both edges in the width direction of the steel strip S. And the lower circular blade 12, and the upper circular blade 11 is installed outside the lower circular blade 12 in the width direction of the steel strip S. At the end portion of the outer peripheral surface 12a of the lower circular blade 12 on the upper circular blade 11 side, the diameter of the lower circular blade 12 becomes smaller as it approaches the side surface 12b on the upper circular blade 11 side. A tapered surface 12d that is inclined at a predetermined inclination angle α1 with respect to the axial direction is formed. [Selection diagram] Fig. 3