JPS55100812A - Compensating unit for temperature of rolled material - Google Patents

Abstract

PURPOSE:To make unnecessary the large scale reheating furnace, and to reduce the loss of heating energy, by detecting the temperature fluctuation of the rolled material being transported to the rolling mill, and by controlling the heating device so as to locally reheat the rolled material in order to dissolve the temperature fluctuation. CONSTITUTION:The rolled material 3 delivered from the continuous casting machine 1, etc., is transported along the carriage way 4 to the rolling mill 2, and the temperature of its top, bottom, and both side planes, is continuously measured by the detector 7. Thus detected tempoerature is compared with the reference signal in the temperature distribution meter 11; and the size of temperature fluctuation of the material 3 with its position is detected. These data are treated by the operator 12 for calculating the heat input to be given to the part of temperature lower than the reference temperature; hereupon, the speed of material 3 is detected by the detector 6, and the heat input given by the burner is operated by the operator 12. The plural burners 8, installed along the carriage way, receive above output of the operator 12 through the controller 10; the burner standing at the spot requiring the reheating is selected and is fired, and its firing timing and the firing period for heating are controlled by the controller 10.