Coated cemented carbide cutting tool insert

US6692822B2 · kind B2 · utility

Assignee

• SANDVIK LTD · SE

Inventors

• Gunilla Andersson · Solna, SE
• Mikael Lindholm · Kalmar, SE

Key dates

• Filing date: Dec 10, 2001
• Grant date: Feb 17, 2004
• Expiry date: Dec 10, 2021

Classification

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

Abstract

A cemented carbide has a <70 &mgr;m, preferably 10-40 &mgr;m, thick binder phase enriched surface zone containing W and Mo but depleted in cubic carbide. The overall content of Mo in the surface zone is the same as that in the inner portion of the cemented carbide. By alloying the cemented carbide with Mo, the performance has been improved particularly when used for turning at conditions causing intermittent thermal and mechanical load in stainless steel.