Method of treating cemented carbide bodies regarding their compositions and structures
US4772339A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1987 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Feb 4, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C29/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a unique and advantageous method making possible a superior technical and economical separation of cemented carbide bodies based upon their compositions and structures. The critical point of the method is, that after formation of a melt by melting of the binder metal including dissolved elements from the hard constituents there are so strong driving forces dependent on the grain size variables, proportions and compositions of the hard constituent phases, that melt is re-distributed between cemented carbide bodies in communicating contact. The re-distribution is determined by differences of mean grain sizes, grain size distributions, relative proportions and compositions of the hard constituent phases of the bodies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.