ANNEALING SEPARATING AGENT COMPOSITION FOR BASE COATING FREE ELECTRICAL STEEL SHEET, AND METHOD FOR MANUFACTURING BASE COATING FREE ELECTRICAL STEEL SHEET USING THE SAME

摘要

The present invention relates to an annealing separator composition for a directional electrical steel sheet, and to a manufacturing method of a directional electrical steel sheet using the same. More specifically, provided are the annealing separator composition for the directional electrical steel sheet, comprising: magnesium oxide or magnesium hydroxide, metal iodide, and a solvent; and a manufacturing method of the directional electrical steel sheet using the same as an annealing separator in a high-temperature annealing process. According to an embodiment of the present invention, provided is the annealing separator composition for the directional electrical steel sheet, which induces an automatic delamination of the base coating.