Coated grooving or parting insert and method of making same

USRE40025E1 · kind E1 · reissue

Assignee

• Sandvik Intellectual Property AB · SE

Inventors

• Anders Jonsson · Bromma, SE
• Anders Piirhonen · Sandviken, SE
• Torbjorn Selinder · Stockholm, SE
• Gregor Kullander · Alvesta, SE

Key dates

• Filing date: Jun 8, 2006
• Grant date: Jan 22, 2008
• Expiry date: Jun 8, 2026

Classification

• Technology area (CPC —): General

Abstract

The present invention relates to a coated cutting tool (e.g.—cemented carbide insert) useful for grooving or parting of steel or stainless steel components such as tubes and bars. The insert is characterised by a WC-Co-based cemented carbide substrate having a highly W-alloyed Co-binder phase and a hard and wear resistant coating including a multilayered structure of sublayers of the composition (TixAl1-x)N with a periodic and repeated variation of the Ti/Al ratio.