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Title: Method for determining molten metal pool level in twin-belt continuous casting machines

Abstract

A method for determining level of molten metal in the input of a continuous metal casting machine having at least one endless, flexible, revolving casting belt with a surface which engages the molten metal to be cast and a reverse, cooled surface along which is directed high velocity liquid coolant includes the steps of predetermining the desired range of positions of the molten metal pool and positioning at least seven heat-sensing transducers in bearing contact with the moving reverse belt surface and spaced in upstream-downstream relationship relative to belt travel spanning the desired pool levels. A predetermined temperature threshold is set, somewhat above coolant temperature and the output signals of the transducer sensors are scanned regarding their output signals indicative of temperatures of the moving reverse belt surface. Position of the molten pool is determined using temperature interpolation between any successive pair of upstream-downstream spaced sensors, which follows confirmation that two succeeding downstream sensors are at temperature levels exceeding threshold temperature. The method accordingly provides high resolution for determining pool position, and verifies the determined position by utilizing full-strength signals from two succeeding downstream sensors. In addition, dual sensors are used at each position spanning the desired range of moltenmore » metal pool levels to provide redundancy, wherein only the higher temperature of each pair of sensors at a station is utilized.« less

Inventors:
 [1];  [2];  [3]
  1. (Colchester, VT)
  2. (Pittsburgh, PA)
  3. (Milton, VT)
Issue Date:
OSTI Identifier:
866881
Patent Number(s):
4813471
Application Number:
07/190,364
Assignee:
Hazelett Strip-Casting Corporation (Colchester, VT); USX Corporation (Pittsburgh, PA) OSTI
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; determining; molten; metal; pool; level; twin-belt; continuous; casting; machines; input; machine; endless; flexible; revolving; belt; surface; engages; cast; reverse; cooled; directed; velocity; liquid; coolant; steps; predetermining; desired; range; positions; positioning; seven; heat-sensing; transducers; bearing; contact; moving; spaced; upstream-downstream; relationship; relative; travel; spanning; levels; predetermined; temperature; threshold; set; somewhat; output; signals; transducer; sensors; scanned; regarding; indicative; temperatures; position; determined; interpolation; successive; pair; follows; confirmation; succeeding; downstream; exceeding; accordingly; provides; resolution; verifies; utilizing; full-strength; addition; dual; provide; redundancy; station; utilized; metal casting; signals indicative; coolant temperature; continuous casting; temperature levels; threshold temperature; liquid coolant; output signals; molten metal; output signal; predetermined temperature; molten pool; transducer sensors; pool position; method according; metal pool; continuous metal; desired range; casting machine; casting belt; twin-belt continuous; casting machines; /164/

Citation Formats

Kaiser, Timothy D., Daniel, Sabah S., and Dykes, Charles D. Method for determining molten metal pool level in twin-belt continuous casting machines. United States: N. p., 1989. Web.
Kaiser, Timothy D., Daniel, Sabah S., & Dykes, Charles D. Method for determining molten metal pool level in twin-belt continuous casting machines. United States.
Kaiser, Timothy D., Daniel, Sabah S., and Dykes, Charles D. Tue . "Method for determining molten metal pool level in twin-belt continuous casting machines". United States. https://www.osti.gov/servlets/purl/866881.
@article{osti_866881,
title = {Method for determining molten metal pool level in twin-belt continuous casting machines},
author = {Kaiser, Timothy D. and Daniel, Sabah S. and Dykes, Charles D.},
abstractNote = {A method for determining level of molten metal in the input of a continuous metal casting machine having at least one endless, flexible, revolving casting belt with a surface which engages the molten metal to be cast and a reverse, cooled surface along which is directed high velocity liquid coolant includes the steps of predetermining the desired range of positions of the molten metal pool and positioning at least seven heat-sensing transducers in bearing contact with the moving reverse belt surface and spaced in upstream-downstream relationship relative to belt travel spanning the desired pool levels. A predetermined temperature threshold is set, somewhat above coolant temperature and the output signals of the transducer sensors are scanned regarding their output signals indicative of temperatures of the moving reverse belt surface. Position of the molten pool is determined using temperature interpolation between any successive pair of upstream-downstream spaced sensors, which follows confirmation that two succeeding downstream sensors are at temperature levels exceeding threshold temperature. The method accordingly provides high resolution for determining pool position, and verifies the determined position by utilizing full-strength signals from two succeeding downstream sensors. In addition, dual sensors are used at each position spanning the desired range of molten metal pool levels to provide redundancy, wherein only the higher temperature of each pair of sensors at a station is utilized.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {3}
}

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