CVD coated cutting tool

US10570509B2 · kind B2 · utility

Assignee

• Sandvik Intellectual Property AB · SE

Inventors

• Carl Bjormander · Spånga, SE
• Erik Lindahl · Solna, SE
• Jan Engqvist · Uppsala, SE

Key dates

• Filing date: Dec 17, 2015
• Grant date: Feb 25, 2020
• Expiry date: Jul 26, 2036

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23B2228/36
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A coated cutting tool for chip forming machining of metals includes a substrate having a surface coated with a chemical vapour deposition (CVD) coating. The coated cutting tool has a substrate coated with a coating including a layer of α-Al2O3, wherein the α-Al2O3 layer exhibits a dielectric loss of 10−6≤tan δ≤0.0025, as measured with AC at 10 kHz, 100 mV at room temperature of 20° C.