CUTTING TOOL FOR PROCESSING METAL MATERIALS

摘要

The invention relates to a cutting tool for processing metal materials, comprising a hard metal body (10) and a multi-layer coating applied to the hard metal body (10) in at least one surface area. The multi-layer coating comprises the following in the following sequence in a direction from the hard metal body (10) to the surface (O) of the cutting tool: at least one layer (11) TiCx1Ny1, where x1 + y1 = 1, x1 = 0, y1 > 0; at least one layer (12) TiCx2Ny2Oz2, where x2 + y2 + z2 = 1, 0 = z2 = 0.03 and 0.5 = x2 = 0.85; at least one layer (13): TiN, or TiCx31Ny31, where 0.2 = x31 = 0.8 and x31 + y31 = 1, or TiNy32Bv32, where 0.0001 = v32 = 0.05 and y32 + v32 = 1; at least one layer (14): TiNy41Bv41Oz41, where y41 + v41 + z41 = 1 and 0.0001 = v41 = 0.05 and 0.01 = z41 = 0.6, or TiCx42Ny42Oz42, where x42 + y42 + z42 = 1 and 0 = y42 = 0.5 and 0.01 = z42 = 0.6; and at least one outer layer (15) ?-Al2O3. The at least one layer (12) TiCx2Ny2Oz2 has a texture in the (311) direction having a texture coefficient TC(311) = 1.3.