Patent · US Expired

Producing rolled steel products

US4016009A · kind A · utility

23Cited by

3References

10Claims

0Family size

Assignee

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

Inventors

Mario Economopoulos · Liège, BE
Yves J. Respen · Herstal, BE

Key dates

Filing date	Jan 29, 1976
Grant date	Apr 5, 1977
Priority date	—
Expiry date	Jan 29, 1996

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21D2221/10
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

In the rolling mill the temperature of the product is reduced to between Ac.sub.3 and Ac.sub.3 + 150.degree. C before it enters the finishing stands. The product emerging from the finishing stands is quenched to provide a surface layer of martensite and/or bainite. Subsequently the heat of the core of the product is allowed to raise the temperature of the surface layer to between 450.degree. and 750.degree. C, so that the quenched layer is tempered.

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