Beschichtetes Schneidwerkzeug

Details

Veröffentlichungs-Nr.

EP4800155

Anmeldetag

27. Februar 2026

Veröffentlichung

2. September 2026

Rechtsraum

EP

Abstract

Provided is a coated cutting tool which has excellent wear resistance and fracture resistance and which accordingly allows for an extended tool life. A coated cutting tool including a substrate and a coating layer formed on a surface of the substrate, wherein: the coating layer includes a lower layer including a specific compound layer, an intermediate layer including an α-Al₂O₃ layer, and an upper layer in this order from the substrate side to the surface side of the coating layer; the upper layer includes one or more Ti compound layers containing a specific compound; the upper layer includes at least one TiCN layer containing TiCN; the lower layer, the intermediate layer and the upper layer have a specific average thickness; in a cross section of the TiCN layer of the upper layer parallel to the surface of the substrate, when a sum of areas of an entire cross section is taken as 100 area%, a ratio of a sum of cross-sectional areas of specific regions A is 30 area% or more and 70 area% or less; and in the region A, a ratio of the total length of Σ3 grain boundaries to 100% of the total grain boundary length, is 30% or more and less than 60%.

Anmelder

Firma

Tungaloy Corporation

Land

🇯🇵 Japan