Back to results
US 8,574,489 B2Granted
Compaction methods
AssigneeHoeganaes Corporation
InventorKalathur S. Narasimhan
Life of this patent
Estimating the term…
Abstract
The present invention is directed to improved compaction techniques for use in powder metallurgical applications using lower temperatures and pressures than are traditionally used in the field.
Claims7
A method of compacting powder metallurgical compositions comprising
- compacting an iron-based powder metallurgical composition that comprises an iron-based powder and a lubricant, using a pressure of about 600 MPa to about 800 MPa to form a green compact;
- heating the green compact at a temperature of about 300° C. to about 400° C.;
- and
- re-compacting the green compact at a pressure of at least 800 MPa to form a compacted part.
1 more element
Dependencies are inferred from the claim text.