COATED CUTTING INSERT

摘要

A coated cutting insert (1) according to the present invention includes a substrate (8), a base layer formed on the substrate (8), and an indicating layer formed on a part of the base layer. The base layer exhibits a color different from that of the indicating layer. The indicating layer is formed on the base layer, in at least a part of a surface including a cutting-edge portion (4) and a rake face (2) except for a flank face (3). When a surface relative roughness Ra of a breaker recess portion or a land portion of the rake face (2) is set to Aµm and a surface relative roughness Ra of the flank face (3) is set to Bµm, relation of B/A‰ 1 is established.