Invention Grant
US08828563B2 Cutting tool for machining metallic materials 有权
用于加工金属材料的切削工具

Cutting tool for machining metallic materials
Abstract:
A cutting tool for metal material processing has a hard metal body and a multi-layer coating applied to the hard metal body in at least one surface area. The multi-layer coating includes the following, sequentially in direction from the hard metal body to the surface of the cutting tool: at least one layer TiCx1Ny1, where x1+y1=1, x1≧0, y1>0; at least one layer TiCx2Ny2Oz2, where x2+y2+z2=1, 0≦z2≦0.03 and 0.5≦x2≦0.85; at least one layer 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: 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 κ-Al2O3. The at least one layer TiCx2Ny2Oz2 has a texture in the direction having a texture coefficient TC(311)=1.3.
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