Production of metal compacts
US4207120A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1978 |
| Grant date | Jun 10, 1980 |
| Priority date | — |
| Expiry date | Nov 13, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2003/241
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to the continuous production of steel compacts in strip form from as-atomized stainless steel powder. A porous green compact of stainless steel powder having a carbon content not exceeding 0.06% by weight is through-carburized to raise its carbon content to a level in excess of that required in the product and then subsequently heat treated in a reducing atmosphere to promote chemical reaction between the carbon and oxygen present in the compact to reduce the former to a level not exceeding 0.03% by weight and the latter by a factor of two. Through-carburizing and reduction may be effected in successive zones 2,3 of a continuous floatation furnace 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.