METHOD FOR DETECTING FLOW-OUT OF SLAG, METHOD FOR CONTROLLING POURING OF MOLTEN METAL, DEVICE FOR DETECTING FLOW-OUT OF SLAG, DEVICE FOR CONTROLLING POURING OF MOLTEN METAL, PROGRAM, AND COMPUTER READABLE RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To quickly and exactly perform the judgment of flow-out of slag.;SOLUTION: Exact judgement of the flow-out of the slag without being affected by the change in the flow rate of the molten steel can be performed by carrying out: a measuring process of measuring the vibration level in a one dimensional, two-dimensional or three-dimensional direction generated in a sealed flowing tube; a delay vector preparing process of preparing the delay vector based on the measured vibration measurement signal; an activity calculating process of determining the activity indicating the vibration state of each time in terms of a digital index; a correction activity calculating process of calculating the correction activity by correcting the activity by using reference activity indicating the average value of the activity previously obtained in a time zone when the slag does not flow out, the reference molten metal flow rate indicating the average value of the molten metal flow rate previously obtained in the time zone when the slag does not flow out, and the activity estimation formula at the change of the molten metal flow rate; and a process of detecting the flow-out of the slag of detecting the flow-out of the slag based on the calculated correction activity.;COPYRIGHT: (C)2008,JPO&INPIT