Vitrified bonded abrasive tools
US6702867B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2002 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Sep 17, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24D18/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention provides a vitrified-bonded abrasive tool wherein the abrasive grit portion comprises a thermally sensitive abrasive grain, such as sintered sol gel microcrystalline alpha alumina abrasive grain or superabrasive grain, and wherein the vitrified bond may be matured by firing at a temperature of about 700 to 1,100 ° C. The invention preferably is carried out with sintered sol gel microcrystalline alpha alumina abrasive grain and a phosphorous oxide-containing, alkaliborosilicate vitrified bond composition. In one embodiment, during firing at about 700 to 1,100 ° C., the vitrified bond of the invention comprises at least two immiscible, amorphous phases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.