Coated cutting tool insert

US7799413B2 · kind B2 · utility

Assignee

• Sandvik Intellectual Property AB · SE

Inventors

• Gunilla Andersson · Solna, SE
• Anders Karlsson · Gävle, SE
• Katarina Dahl · Sandviken, SE
• Jan Kjellgren · Sollentuna, SE
• Peter Littecke · Huddinge, SE

Key dates

• Filing date: Jun 8, 2007
• Grant date: Sep 21, 2010
• Expiry date: Jul 1, 2028

Classification

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

Abstract

A CVD-coated cutting tool insert with improved toughness properties having the ability to withstand high temperatures without sacrificing edge line security is disclosed. The insert coating comprises a TiCxNy-layer with a low tensile stress level of 50-500 MPa and an α-Al2O3-layer with a high surface smoothness with a mean Ra<0.12 μm as measured by AFM-technique, obtained by subjecting the coating to an intensive wet blasting operation.