Cemented carbide insert for turning, milling and drilling

USRE40026E1 · kind E1 · reissue

Assignee

• Sandvik Intellectual Property AB · SE

Inventors

• Mats Waldenstrom · Bromma, SE
• Ake Ostlund · Stuvsta-Snättringe, SE
• Ove Alm · Åtvidaberg, SE

Key dates

• Filing date: Jul 8, 1997
• Grant date: Jan 22, 2008
• Expiry date: Jul 8, 2017

Classification

• Technology area (CPC —): General

Abstract

There is disclosed a cemented carbide insert with excellent properties for machining of steels and stainless steels. The cemented carbide comprises WC and 4-25% Co. The WC-grains have an average grain size in the range 0.2-3.5 μm and a narrow grain size distribution in the range 0-4.5 μm.According to the method of the invention a cemented carbide cutting tool insert is made by mixing powders of WC, TiC, TaC and/or NbC, binder metal and pressing agent, drying preferably by spray drying, pressing to inserts and sintering. The method characterised in