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Title:
METHOD AND DEVICE FOR OPENING HOLE IN MOLTEN METAL OUTFLOW OPENING
Document Type and Number:
Japanese Patent JP2943618
Kind Code:
B2
Abstract:

PURPOSE: To automatically and stably open a hole to prevent the clogging of a nozzle.
CONSTITUTION: In a hole opening method when the molten steel is solidified and dogged in the vicinity of a sliding gate 6 or in a dipping nozzle 7 of a tundish body 1 of a continuous casting equipment, a lance pipe 16 is automatically lowered along a supported column 11 provided on a ladle turret 3 to be inserted into a nozzle hole, and oxygen is ejected out of the lance pipe 16 to realize the ignition and melting of the solidified metallic layer and film 9. This constitution prevents the erosion and breakage of the refractory, etc., of the tundish 1 and the nozzle 7, and stably opens the clogged nozzle hole, and avoids the handling and hole opening operation requiring the muscle power in the hot environment.


Inventors:
NAKATANI TETSUO
KOIKE YUKIMITSU
NISHIKI TOMIO
Application Number:
JP1994000192176
Publication Date:
August 30, 1999
Filing Date:
July 21, 1994
Export Citation:
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Assignee:
SUMITOMO KINZOKU KOGYO KK
International Classes:
B22D41/44; B22D11/10; B22D41/22; B22D41/50; B23K7/00; F27D3/15; (IPC1-7): B22D11/10; B22D11/10; B22D41/22; B22D41/50; B23K7/00; F27D3/15
Domestic Patent References:
JP5237608A
JP292442A
JP7232266A
JP6190519A
JP5293615A
JP5043146Y1
Attorney, Agent or Firm:
押田 良久