Coated cutting tool insert

US9180522B2 · kind B2 · utility

Assignee

• Seco Tools AB · SE

Inventors

• Hans Lind · Linköping, SE
• Rikard Forsen · Linköping, SE
• Mats Johansson · Linköping, SE
• Ferenc Tasnadi · Linköping, SE
• Naureen Ghafoor · Linköping, SE
• Bjorn Alling · Linköping, SE
• Magnus Oden · Tullinge, SE
• Igor Abrikossov · Linköping, SE

Key dates

• Filing date: Nov 22, 2011
• Grant date: Nov 10, 2015
• Expiry date: May 30, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T407/27
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A cutting tool insert for machining by chip removal includes a body of a hard alloy of cemented carbide, cermet, ceramics, polycrystalline diamond or cubic boron nitride based materials onto which a hard and wear resistant coating is deposited by physical vapour deposition (PVD). The coating includes at least one layer of a NaCl-structured (TicAlaCrbMed)(CzOyNx) where Me is one or more of the elements Zr, Hf, V, Nb, Ta, Mo, W and/or Si, 0.10<a<0.60, b+d>0.20, c>0.05, 0≦d<0.25, 0.75<x<1.05, 0≦y<0.25 and 0≦z≦0.25 with a thickness between 0.5 and 10 μm. The layer has a columnar mictrostructure with an average columnar width of <1 μm, a compressive stress level of −6 GPa<σ<−0.5 GPa and a nanohardness >25 GPa.