Process for improving the quality of steel sections
US4203783A · kind A · utility
5Cited by
1References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1978 |
| Grant date | May 20, 1980 |
| Priority date | — |
| Expiry date | Sep 18, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S148/902
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The elastic limit and breaking load of steel sections are improved by a process of surface quenching and self-tempering comprising a cooling stage followed by rapid cooling which is interrupted to allow the quenched surface layer of the section to be tempered by heat from non-quenched inner portions of the section. The rapid cooling is succeeded by a slow cooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.