Mixed iron powder for powder metallurgy
US5599377A · kind A · utility
2Cited by
3References
8Claims
0Family size
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Key dates
| Filing date | Jul 24, 1995 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | Jul 24, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C33/0264
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A mixed iron powder for powder metallurgy containing less than about 0.1 wt % of Mn, about 0.08 to 0.15 wt % of S, a total of about 0.05 to 0.70 wt % of one or more compounds selected from MoO.sub.3 and WO.sub.3, about 0.50 to 1.50 wt % of graphite powder, and the balance Fe and incidental impurities. The mixed iron powder can be manufactured by an atomizing process using water, and be used to manufacture a sintered steel having excellent machinability, strength and toughness without forming soot, even if sintered in a hydrogen-containing atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.