Patents Assigned to Centre de Recherches Metallurgiques-Centrium voor Research in de Metallurgie
  • Rolled steel rod or bar
    Patent number: 4016015
    Abstract: Steel rod or bar at the exit of the finishing stand of a hot rolling mill is superficially quenched, so that the surface layer of the rod or bar is given a bainitic or martensitic structure. Immediately after quenching, the core of the rod or bar is at about 850.degree. C and, therefore, still austenitic. Subsequent air cooling allows the austenite to transform to ferrite and carbides, while the surface layer is tempered by the heat transferred to it from the core.
    Type: Grant
    Filed: September 26, 1975
    Date of Patent: April 5, 1977
    Assignee: Centre de Recherches Metallurgiques-Centrium voor Research in de Metallurgie
    Inventors: Yves Jean Respen, Paul Andre Cosse, Mario Economopoulos