Thickness measuring method, molten steel Omodaka who is while molding the program

摘要

PROBLEM TO BE SOLVED: To provide a method, system or the like capable of measuring the powder molten thickness or the like stably and accurately by a noncontact measuring method exerting no influence on a slab quality.;SOLUTION: This layer thickness measuring method for measuring the height of a molten steel having one or a plurality of different electric conductivities, or the thickness of a molten powder layer or a powdered powder layer has a process for applying a voltage having a frequency of 100 kHz or 1 MHz to an exciting coil 1, a process for detecting a voltage based on an eddy current generated in each layer by detection coils 2, 3 which are same as or different from the exciting coil 1, and a process for outputting the phase difference with the voltage having such a frequency and the absolute value of an amplitude based on the detected voltage.;COPYRIGHT: (C)2005,JPO&NCIPI