Iron based powder composition
US8734561B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2010 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Apr 20, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A bonded metallurgical powder composition including: an iron-based powder having a weight average particle size in the range of 20-60 μm, in an amount of at least 80 percent by weight of the composition, graphite powder in an amount between 0.15-1.0 percent by weight of the composition, a binding agent in an amount between 0.05-2.0 percent by weight of the composition, a flow agent in an amount between 0.001-0.2 percent by weight of the composition; wherein the graphite powder is bound to the iron-based powder particles by means of the binding agent, and wherein the powder composition has an apparent density of at least 3.10 g/cm3 and a hall flow rate of at most 30 s/50 g. Also, a method for producing a sintered component with improved strength from the inventive composition, as well as to a heat treated sintered component produced according to said method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.