Coated cutting tool for metal cutting applications generating high temperatures

US8216702B2 · kind B2 · utility

Assignee

• Seco Tools AB · SE

Inventors

• Mats Johansson · Linköping, SE
• Lina Rogstrom · Linköping, SE
• Lars Johnson · Stockholm, SE
• Magnus Oden · Tullinge, SE
• Lars Hultman · Säter, SE
• Greger Hakansson · Linköping, SE
• Marianne Collin · Stuvsta-Snättringe, SE
• Jacob Sjolen · Fagersta, SE

Key dates

• Filing date: Jun 15, 2011
• Grant date: Jul 10, 2012
• Expiry date: Jun 15, 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 includes a body of cemented carbide, cermet, ceramics, high speed steel (HSS), polycrystalline diamond (PCD) or polycrystalline cubic boron nitride (PCBN), a hard and wear resistant coating is applied, grown by physical vapour deposition (PVD) such as cathodic are evaporation or magnetron sputtering. The coating includes at least one layer of (ZrxAl1-x)N with 0.05<x<0.30 with a thickness between 0.5 and 10 μm. The layer has a nanocrystalline columnar microstructure consisting of a single cubic phase or a mixture of hexagonal and cubic phases. The insert is particularly useful in metal cutting applications generating high temperatures with improved edge integrity.