Title:
METHOD FOR CONTROLLING LEVEL IN CASTING NOZZLE
Document Type and Number:
Japanese Patent JPH05154632
Kind Code:
A
Abstract:
PURPOSE: To prevent the entrapment of powder into a mold by changing Ar gas flow rate to control molten steel level in a nozzle.
CONSTITUTION: At the time of pouring the molten steel 14 from a tundish 13 into the continuous casting mold 15 through the casting nozzle 3, the molten steel level (h1) in the nozzle 3 is estimated from the density and the pouring rate of the molten, steel 14 and the pressure in the casting nozzle 3. The pressure in the nozzle is controlled so that the value becomes the prescribed value obtd. from discharging flow speed V0 of the molten steel assumed with molten steel surface level in the tundish 13 as the supplying side.
Inventors:
OTAKI KEIICHI
IDE MAKOTO
OKUMURA KYOJI
IDE MAKOTO
OKUMURA KYOJI
Application Number:
JP34764291A
Publication Date:
June 22, 1993
Filing Date:
December 04, 1991
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B22D11/18; G05D9/00; (IPC1-7): B22D11/18; G05D9/00
Attorney, Agent or Firm:
Inoue Masao