Method of making a heat treated steel casting and a heat treated steel casting
US5900082A · kind A · utility
18Cited by
1References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Dec 11, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of making a heat treated steel casting comprising the steps of taking an "as-cast" steel casting comprising not more than 0.2% carbon, a total alloy content of less than about 4%, a carbon equivalent, as herein defined, lying in the range 0.45-0.7 and cooling the casting after performing the casting operation and then performing a heat treatment operation by re-heating the casting to a temperature above the AC.sub.3 temperature to homogenize the casting, then cooling the casting to an inter-critical temperature lying between the AC.sub.3 and AC.sub.1 temperature and then quenching to room temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.