Molten steel outflow automatically controlling device

Details Molten steel outflow automatically controlling device Molten steel outflow automatically controlling device

1977-11-15

1980-09-16

Scherbel, David A.

Dispensing

Molten metal dispensing

Flow controllers or assists

164155, 222 52, B22D 4108

Patent

active

042225060

ABSTRACT:
A molten steel outflow automatically controlling device comprising an infrared ray camera for detecting infrared rays emitted by a molten steel stream and slag flowing down out of a molten steel vessel such as a ladle or converter, a color monitor for converting the infrared rays emitted by the molten steel and slag into video signals with such infrared ray camera and for developing monitor picture images by color-printing the signals in two kinds, a signal discriminating device for making the two kinds of color picture images discriminating signals by the ratio of areas and a nozzle closing device for closing a nozzle for the outflow of molten steel of the molten steel vessel by such discriminating signal as is mentioned above, whereby, when the remaining amount of the molten steel in the molten steel vessel becomes small, the outflow of the slag will be detected and the nozzle for the outflow of the molten steel will be automatically closed to stop the pouring and to prevent the slag from mixing into the molten steel.

REFERENCES:
patent: 3537505 (1970-11-01), Thalmann
patent: 4077457 (1978-03-01), Hashio et al.

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