Hi-density sintered alloy and spheroidization method for pre-alloyed powders
US5552109A · kind A · utility
9Cited by
9References
16Claims
0Family size
Inventors
Key dates
| Filing date | Jun 29, 1995 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Jun 29, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2998/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention relates to a process of forming a sintered article of powder metal comprising blending graphite and lubricant with a pre-alloyed iron based powder, pressing said blended mixture to shape in a single compaction stage sintering said article, and then high temperature sintering said article in a reducing atmosphere to produce a sintered article having a density greater than 7.4 g/cc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.