Metal working drill/endmill blank and its method of manufacture

US6086980A · kind A · utility

Assignee

• SANDVIK AB · SE

Inventors

• Stephen M. Foster · Drexel Hill, US
• Gary M. McCarthy · East Bridgewater, US
• Alistair Grearson · Dudley, GB
• Helene Ouchterlony · Tyresö, SE

Key dates

• Filing date: Dec 18, 1997
• Grant date: Jul 11, 2000
• Expiry date: Dec 18, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/263
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A cemented carbide drill/endmill blank and method of manufacture thereof wherein the drill/endmill includes a core and a surrounding tube with improved technological properties. The difference in Co-content between the core and tube is 1-10 wt-% units and the cubic carbide content is 8-20 wt-% in the tube and 0.5-2 wt-% in the core.