Title:
METHOD AND DEVICE TO DETECT LIQUID FACE LEVEL IN MOLD
Document Type and Number:
Japanese Patent JP3513381
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To realize a detecting method of a liquid face level in a mold at low running cost, with reference to a method and device to detect the liquid face level in the mold for detecting a liquid face level of a molten metal in the mold in the case of continuous casting of a molten metal such as a steel, in a way to quickly respond to a sudden fluctuation of the liquid face level and not to generate a drifting phenomena.
SOLUTION: A liquid face level value obtained by carrying out an calculation on the basis of a temperature detected value received from a temperature detecting element installed in a mold 1 and, a liquid face level value obtained by a calculation based on a γ ray intensity detected value detecting a γ ray from a γ ray generating source 4 of one side of the mold 1 by a γ ray detecting unit 6 of the other side of the mold 1, are used. A short cycle fluctuation portion out of the liquid face level values based on the γ ray intensity detecting value, and a long cycle fluctuation portion out of the liquid face level values based on the temperature detecting value are supplemented to make it as the liquid face level value.
Inventors:
Azuma, Toyoichiro
Application Number:
JP1724098A
Publication Date:
March 31, 2004
Filing Date:
January 29, 1998
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B22D11/16; G05D9/12; (IPC1-7): B22D11/16; G05D9/12
Attorney, Agent or Firm:
岸田 正行 （外３名）