Bonded abrasive articles and methods of manufacture
US10350732B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 2015 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Nov 13, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/1409
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Methods for manufacturing bonded abrasive articles, for example vitrified bonded grinding wheels. A bondable abrasive composition is prepared including abrasive particles, a binder medium and a gamma-pyrone pore inducing material, such as ethyl maltol. A precursor abrasive structure is formed from the composition. The gamma-pyrone pore inducing material is removed from the precursor abrasive structure to provide a porous precursor abrasive structure that is further processed to provide a bonded abrasive article. In some embodiments, the binder medium includes a vitreous bonding material, and the bonded abrasive article is a porous vitrified bonded grinding wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.