CRACK DIAGNOSIS DEVICE OF SOLIDIFIED SHELL IN MOLD AND METHOD THEREOF

摘要

PURPOSE: An apparatus and a method for diagnosing cracks of a solidified shell in a mold are provided to implement scarfing on the surface of slab even in the even of crack by diagnosing crack based on temperature differences of a solidification shell and the displacement time of crack. CONSTITUTION: An apparatus(100) for diagnosing cracks of a solidified shell in a mold(30) comprises a temperature sensing unit(110) and a control unit(190). The temperature sensing unit comprises temperature sensors(111) which are arranged in a matrix in a crack-possible area of a mold. The control unit collects information on the temperature of the mold and stores information on the time of the maximum and minimum temperatures when the temperature difference between the maximum temperature right before temperature drop and the minimum temperature during temperature drop for each temperature sensor is equal to or higher than a critical value. And, the control unit diagnoses cracks in the solidification shell of the mold using the time information of the temperature sensors belonging to the same line.