Coated cutting tool insert

US8043729B2 · kind B2 · utility

Assignee

• Sandvik Intellectual Property AB · SE

Inventors

• Rickard Sundström · Stockholm, SE
• Susanne Norgren · Huddinge, SE
• Marie Pettersson · Ayacucho, PE
• Leif Akesson · Ayacucho, PE
• Bjorn Ljungberg · Stuvsta-Snättringe, SE

Key dates

• Filing date: Dec 8, 2006
• Grant date: Oct 25, 2011
• Expiry date: Aug 30, 2029

Classification

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

Abstract

The present invention discloses a coated cutting tool insert particularly useful for dry and wet machining, preferably milling, in low and medium alloyed steels, stainless steels, with or without raw surface zones under severe conditions such as vibrations, long overhang and recutting of chips. The insert is characterized by WC—Co cemented carbide with a W and Cr alloyed Co-binder phase and a coating including at least three TiCxNyOz layers and a top layer at least on the rake face of a smooth α-Al2O3.