Patent · US Expired

Apparatus for improving the quality of steel sections

US4161800A · kind A · utility

0Cited by

2References

1Claims

0Family size

Assignee

Centre De Recherches Metallurgiques-Centrum Voor Research in De Metallurgie · BE

Inventors

Mario Economopoulos · Liège, BE
Yves J. Respen · Herstal, BE
Stephane H. Wilmotte · Liège, BE

Key dates

Filing date	Sep 19, 1977
Grant date	Jul 24, 1979
Priority date	—
Expiry date	Sep 19, 1997

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21D1/667
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

At the outlet of the finishing stand of a rolling mill, a cooling apparatus is arranged to surface quench only the outer layer of the flat face of a steel section by a cooling fluid. The cooling conditions are adjusted so that, at the outlet of the cooling zone, the unquenched parts of the section are at a temperature still sufficiently high to temper the quenched face, and so that the austenite is transformed into ferrite and carbides in the unquenched parts of the section.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.