PVD-coated cutting tool insert

US6884497B2 · kind B2 · utility

Assignee

• Seco Tools AB · SE

Inventors

• Anette Sulin · Fagersta, SE
• Andreas Larsson · Kalmar, SE
• Jacob Sjolen · Fagersta, SE

Key dates

• Filing date: Mar 18, 2003
• Grant date: Apr 26, 2005
• Expiry date: May 28, 2023

Classification

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

Abstract

A coated cemented carbide insert (cutting tool), particularly useful for milling at high cutting speeds in alloyed steels, tool steels and milling in hardened steels includes a WC—Co cemented carbide containing NbC and TaC and a W-alloyed binder phase, and a coating including an inner layer of TixAlyN, 0.8<x+y<1.2, with 0.25<x/y<1.45, with columnar grains.