Patent ID: 8522645
Filing Date: 2013-09-03
Classification: B26B,C23F,Y10T

Abstract:
1. A blade member comprising a plurality of blade groups, the blade groups each containing a laminate of a plurality of blades arranged in a horizontal direction; edges of blades of the blade groups having an evenly sharpened and hardened layer along an entire edge line of the edges to the depth of 0.1 to 1.5 μm from a pointed end of the edge and to a depth of 0.1 to 1.5 μm in a thickness direction of the edge by ion beam treatment and plasma ion implantation; the edges of the blades of the blade groups prior to the ion beam treatment and plasma ion implantation initially having an edge angle of 10 to 35 degrees and a burr height of 0.1 to 10 μm, and