Deformation measuring device of high temperature hot rolled steel sheet and its method

摘要

The present invention relates to an on-line measuring device and method for the transformation of high temperature steel, and by measuring only the maximum value of the measured voltage signal such as unit time, the transformation rate can be measured more easily, as well as lift It is an object of the present invention to provide an apparatus and method for more accurately measuring the amount of transformation of a hot rolled steel sheet by removing an error caused by a change in the off.;The present invention is a device for measuring the amount of transformation of the hot rolled steel sheet, in the cooling facility of the hot rolled steel sheet is installed at a lower portion with a constant distance from the hot hot rolled steel sheet 11 passing through the cooling facility to generate a magnetic flux by a constant current The magnetic flux generator 31, the AC excitation device 32 for supplying a constant current to the magnetic flux generator 31, and the organic voltage measuring device 33 for measuring the magnetic flux induced from the magnetic flux generator 32 as a voltage value. Magnetic flux measuring device 30 consisting of; A unit time input unit 40 for obtaining a unit time for measuring the amount of transformation from the distance between the moving speed of the hot rolled sheet and the stand of the finishing mill; A maximum voltage measuring device (50) for obtaining a maximum voltage value measured by the organic voltage measuring device (33) during a unit time obtained from a unit time input device (40); And a calculation device 60 for calculating a transformation amount based on the maximum voltage measured by the maximum voltage measuring device 50, and a measuring method of the transformation amount of the hot rolled steel sheet.