Coated insert and method of making same

US7470296B2 · kind B2 · utility

Assignee

• Sandvik Intellectual Property AB · SE

Inventors

• Mikael Lindholm · Kalmar, SE
• Markus Rodmar · Vallentuna, SE
• Anders Jonsson · Bromma, SE

Key dates

• Filing date: Jul 13, 2005
• Grant date: Dec 30, 2008
• Expiry date: May 10, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/265
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A cutting tool insert particularly for turning of steel comprising a body and a coating with a first (innermost) layer system of at least two layers of TiCxNyOz with x+y+z≦1 with a total thickness of from about 0.7 to about 4.5 μm, a second layer system to a large extent consisting of Al2O3 and an outermost layer system comprising one or several layers in sequence of TiCxNy (x+y≦1) with individual thicknesses of greater than about 0.15 to about 0.8 μm and a layer with Al2O3 with a thickness greater than about 0.1 to about 0.4 μm with a total thickness of the outermost layer system thinner than about 2.5 μm and a total thickness of the coating in the range of from about 2.0 to about 12.0 μm.