HEATING DEVICE OF THICK PLATE AND HEATING METHOD OF THICK PLATE

摘要

PURPOSE: A rear plate heating device and a rear plate heating method are provided to prevent or suppress a temperature loss generated in a front end portion and a rear end portion of the rear plate. CONSTITUTION: A rear plate heating device includes a first preheating device (50), a second preheating device (50), and a control device (70). One corresponding to a front end portion of a rear plate among a plurality of first preheating units of the first preheating device arranged in the longitudinal direction generates heats. One corresponding to a rear end portion of the rear plate among a plurality of second preheating units of the second preheating device arranged in the longitudinal direction of the rear plate generates heats. The control device measures the positions of the front and rear end portions of the rear plate based on the rolling speed and rolling time, thereby controlling the first and second preheating devices. [Reference numerals] (70) Control device