Method of making cemented carbide insert

USRE41248E1 · kind E1 · reissue

Assignee

• Sanvik Intellectual Property Aktiebolag · SE

Inventors

• Lisa Palmqvist · Umeå, SE
• Mikael Lindholm · Kalmar, SE
• Anders Lenander · Tyresö, SE
• Bjorn Ljungberg · Stuvsta-Snättringe, SE
• Michael Thysell · Stockholm, SE

Key dates

• Filing date: Jul 12, 2006
• Grant date: Apr 20, 2010
• Expiry date: Jul 12, 2026

Classification

• Technology area (CPC —): General

Abstract

A method of making a cutting insert includes forming a powder mixture containing WC, 2-10 wt % Co, 4-12 wt % cubic carbides, adding N in an amount of 0.9-1.7% of the weight of the cubic carbides, mixing the powder with a pressing agent, milling and spray drying the mixture, compacting and sintering the material at 1300-1500 in an atmosphere of sintering gas 40-60 mbar, applying post-sintering treatment, and applying a coating by CVD or MTCVD.