Method for producing hard metal mixtures

US6626975B1 · kind B1 · utility

Assignee

• H. C. Starck GmbH & Co. KG · DE

Inventors

• Benno Gries · Wolfenbüttel, DE
• Jörg Bredthauer · Bonn, DE

Key dates

• Filing date: Jul 13, 2001
• Grant date: Sep 30, 2003
• Expiry date: Jul 13, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2993
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a method for producing a homogeneous mixture of hard material powders and binder metal powders without using grinding bodies, liquid grinding auxiliary agents and suspending media. According to the invention, the mixture components are mixed at close range while generating a high shearing collision velocity of the powder particles and are remotely mixed by rotating the mixing bed without resulting in a particle size reduction of the hard material powders.