Coated cutting tool insert

US6890632B2 · kind B2 · utility

Assignee

• Seco Tools AB · SE

Inventors

• Andreas Larsson · Kalmar, SE
• Anette Sulin · Fagersta, SE
• Lena Pettersson · Norberg, SE

Key dates

• Filing date: Mar 18, 2003
• Grant date: May 10, 2005
• Expiry date: Jun 12, 2023

Classification

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

Abstract

Coated cemented carbide inserts (cutting tool), particularly useful for milling at high cutting speeds in steels and milling in hardened steels are characterised by a WC—Co cemented carbide containing NbC and TaC and a W-alloyed binder phase and a coating including a first, innermost layer of TiCxNyOz with equiaxed grains, a second layer of TiCxNyOz with columnar grains and at least one layer of Al2O3 composed primarily of the κ-phase.