Patents Assigned to Deltasider SpA
  • Nozzles for casting aluminum-killed steels
    Patent number: 4682717
    Abstract: The improvement consists in forming the nozzles in two parts, the first as a body made of a refractory material, preferably zirconium oxide or magnesite, having a central axial cavity passing right through it, and the second as a body of a calcium-oxide based refractory material, having an appropriate passage for the liquid steel and located in said axial cavity.
    Type: Grant
    Filed: July 6, 1984
    Date of Patent: July 28, 1987
    Assignee: Deltasider SpA
    Inventors: Emilio Marino, Raffaele Mastromarino