DEVICE FOR PREDICTING EDGE DEFECT OF HOT-ROLLED STEEL SHEET COIL AND METHOD THEREFOR

摘要

the present invention , such as hot-rolled coils and final rolled products of topgwi defect (Saw Mark Defect) such as edge defects relates to the occurrence degree of the edge defect prediction apparatus and method for predicting in advance of the hot rolled coil , a step of analyzing the matter content of the molten steel being cast for this purpose , the components of the analysis of molten steel in the Cu, Sn and S calculating an index by multiplying each component analyzing the content , and the component analysis index ( CAI ) assigned to the relational expression for calculating the edge defect index ( SDI ) is calculated the edge defect index ( SDI ) using provides predicting a degree of occurrence of the hot-rolled coil edge defects . ;