Process for the manufacture of a sintered, ceramic abrasive and grinding tools with this abrasive

US6214069A · kind A · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Paul Blank · Dresden, DE
• Andreas Krell

Key dates

• Filing date: Mar 5, 1999
• Grant date: Apr 10, 2001
• Expiry date: Mar 5, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B35/1115
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An economical process for the manufacture of a polycrystalline, sintered, ceramic abrasive from a powder raw material is described, which process is characterized by the following process steps: preparation of a slip largely free from polymerizing and/or coagulating additives from the powder raw material; pressureless shallow casting of the slip in a vessel; degassing, drying and crushing of the cast sheet to obtain a fabricated material and sintering of the fabricated material to create the abrasive. This process can be used to manufacture an abrasive that permits extremely high grinding performance due to its extraordinary density and structural integrity.