Layered coated cutting tool

US8075744B1 · kind B1 · utility

Assignee

• Seco Tools AB · SE

Inventors

• Mats Johansson · Linköping, SE
• Jon Andersson · Karlskrona, SE
• Jacob Sjolen · Fagersta, SE

Key dates

• Filing date: Jul 18, 2011
• Grant date: Dec 13, 2011
• Expiry date: Jul 18, 2031

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 is formed from a substrate selected from cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel. The insert includes a hard and wear-resistant coating formed from laminar polycrystalline metal nitrides layers. The laminar polycrystalline metal nitrides layers have a repetitive form . . . A/B/A/C/A/B/A/C/ . . . with a total thickness of about 0.5 μm to about 5 μm.