Composition and method for forming an abrasive article
US4652277A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1986 |
| Grant date | Mar 24, 1987 |
| Priority date | — |
| Expiry date | Apr 25, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24D18/0009
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In accordance with the present invention, a composition of matter is provided for forming a vitrified abrasive wheel having an inner core and outer rim of differing compositions wherein said outer rim contains cubic boron nitride. The composition for the preferred rim material is a mixture comprising between about 10 to 70% by weight cubic boron nitride, between about 5 to 60% alumina, and about 15 to 35% bonding medium; and the preferred core composition comprises between about 10 to 65% silicon carbide, 10 to 60% alumina, and 5 to 30% bonding medium. In another aspect, a bonding medium is provided which is compatible with cubic boron nitride and in one embodiment has an oxide composition comprising about 71% silicon dioxide, 14% by weight boron oxide, about 5% by weight aluminum oxide, and about 10% by weight sodium oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.