Method for manufacturing brake disc and brake disc

A method for manufacturing a brake disc, the method comprising:

• a press step of molding, by press molding, a brake-disc intermediate product that includes a corrugated portion in which a concave portion and a convex portion are repeatedly formed over an outer circumference;
• a mold set step of setting the brake-disc intermediate product in a mold, in which the mold has a slope corresponding to the corrugated portion, and an angular portion formed along at least one outer circumferential edge of the corrugated portion is in contact with the slope in a state where the brake-disc intermediate product is set in the mold;
• and
• a surface press step of deforming the angular portion in contact with the slope by pressing the brake-disc intermediate product set in the mold in a direction of the mold, to mold a chamfer portion,
• wherein in the surface press step, a gap between an inner bottom surface of the mold and a bottom surface of the brake-disk intermediate product is adjusted so that the chamfer portion has a chamfer length L1 of 0.2 mm or more in the direction of the contact surface of the brake pad from the angular portion of the outer circumferential edge.