Patents Assigned to Ajax Magnethermic Corp.
  • Patent number: 5799720
    Abstract: The assembly is designed for transferring molten metal from a molten metal reservoir to a mold for casting molten metal. The assembly comprises a casting nozzle having an electrically conductive top wall and bottom wall and two side walls joined to the top wall and the bottom wall to form a passage therebetween for flowing molten metal from the reservoir to the mold, the top wall having a first outside surface and the bottom wall having a second outside surface. An inductive heater is positioned on at least one of the first surface and the second surface, the inductive heater positioned to heat the top wall and bottom wall. A layer of insulation is provided between the inductive heater and the first and second surfaces. A magnetic shield is provided to partially surround the inductive heater, the shield positioned to direct magnetic flux into the nozzle.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: September 1, 1998
    Assignee: Ajax Magnethermic Corp.
    Inventors: Nicholas V. Ross, C. Edward Eckert
  • Patent number: 4895736
    Abstract: A method particularly adapted for alloying a coating on a steel strip. The invention uses an induction heating furnace to produce a galvannealed product. In particular, the operating frequency to the heating coils of the furnace is modulated to avoid a resonant vibration in the steel strip through the heating zone of the furnace. Preferably the invention comprises imposing a frequency modulation on the operating frequency of the power signal to the heating coils.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: January 23, 1990
    Assignee: Ajax Magnethermic Corp.
    Inventors: Richard A. Sommer, George Havas, Mario Tama