CONTROL METHOD OF IMMERSION DEPTH OF MOLTEN METAL MEASURING PROBE, AND MOLTEN METAL MEASURING PROBE USED THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a control method of an immersion depth of a molten metal measuring probe capable of surely performing measurements, for example, a molten temperature, a solidification temperature, and sample properties by precisely controlling the immersion depth in a molten metal layer.

SOLUTION: Detecting means 2 that detects the surface Ls of a molten metal layer L in a process of immersing a probe distal end 1a into a molten metal container is provided. The control method of the immersion depth comprises: based on a detecting signal of the molten metal layer surface Ls output from the detecting means 2 in an immersing step of the probe 1, controlling a subsequent immersion depth of the probe 1 in the molten metal layer L in the immersing step; calculating a lowering distance (an immersion amount) thereafter at a time point when the immersion depth in the molten metal layer in a charge reaches the molten metal layer surface Ls; and controlling and setting the immersion depth in real time.

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