Title:
SLAG SEPARATING METHOD IN TUNDISH FOR VACUUM INDUCTION MELTING
Document Type and Number:
Japanese Patent JPS6149768
Kind Code:
A
Abstract:
PURPOSE: To prevent the intrusion of slag, etc. into the molten metal to be poured into a casting mold in a tundish for vacuum induction melting by covering a nozzle hole with a refractory brick cap prior to pouring.
CONSTITUTION: A high-alloy steel is refined and melted by Al deoxidation by using, for example, a CaO-CaF2 flux in a vacuum induction melting furnace and thereafter the nozzle hole 2 of the tundish 1 is covered with the cap 3 made of the calcareous refractory brick piece having about 2.8 specific bulk density. The intrusion of the flux into an ingot does not arise when the ingot is thereafter cast by pouring the molten metal into the tundish 1.
Inventors:
ONOE TOSHIO
MIYAMOTO MANABU
MIYAMOTO MANABU
Application Number:
JP17212584A
Publication Date:
March 11, 1986
Filing Date:
August 18, 1984
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
B22D11/10; B22D37/00; B22D43/00; (IPC1-7): B22D11/10; B22D43/00
Attorney, Agent or Firm:
Maruhisa Yoshihisa