Powder metallurgy high speed tool steel article and method of manufacture
US4839139A · kind A · utility
1Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1986 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Feb 25, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C33/0207
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A powder metallurgy produced high speed tool steel article comprising a mixture of prealloyed high speed tool steel particles coated with a hard, wear resistant material, such as a carbide or nitride, mixed with prealloyed high speed tool steel uncoated particles; the particles are compacted to essentially full density and the hard, wear resistant material is at the boundaries of the coated particles and contained in a continuous matrix of the high speed tool steel. The article is produced by hot compacting a particle charge to essentially full density of a mixture of the coated and uncoated particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.