| 摘要 |
The present invention relates to a grain-oriented electrical steel sheet which is used for an iron core material of a generator and a transformer etc., and a method for manufacturing the same. According to the present invention to achieve the above purpose, a method for manufacturing a grain-oriented electrical steel sheet comprises: (a) a step for preparing a grain-oriented electrical steel sheet of 2 or more; (b) a step for attaching an insulating adhesive to more than one side between two sides which are mutually opposing of the grain-oriented electrical steel sheet of 2 or more; (c) a step for obtaining a grain-oriented electrical steel sheet laminate by arranging the grain-oriented electrical steel sheet of 2 or more on top of each other in order to interpose the insulating adhesive between the grain-oriented electrical steel sheets; (d) a step for manufacturing a grain-oriented electrical steel sheet by bonding and heating the grain-oriented electrical steel sheet laminate at 200-350°C after rolling the grain-oriented electrical steel sheet laminate with roll separating force of 2-4 N/mm2 for 1-2 hours; and (e) a step for forming an insulating layer by coating the insulating adhesive in an upper side and a lower side of the manufactured grain-oriented electrical steel sheet. |
