Patent · US Expired

Method of manufacturing rails

US4486243A · kind A · utility

11Cited by

2References

8Claims

0Family size

Assignees

Centre De Recherches Metallurgiques-Centrum Voor Research in De Metallurgie · BE
Metallurgique et Miniere de Rodange-Athus S.A. · FR

Inventors

Nicole Lambert · Waremme, BE
Pierre Simon · Montegnée, BE
Rene Conti · Athus, BE

Key dates

Filing date	Oct 11, 1983
Grant date	Dec 4, 1984
Priority date	—
Expiry date	Oct 11, 2003

Classification

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

Abstract

At the outlet of a hot rolling mill the temperature of a hot rolled rail is reduced to a value not lower than that at which the pearlitic transformation begins in the rail head. The continuously moving rail is then rapidly cooled to below 650.degree. C. so that at least 80% of the austenite-pearlite transformation has occurred at the end of rapid cooling. The rail is then cooled to ambient temperature.

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