发明名称 |
GRAIN-ORIENTED ELECTRICAL STEEL SHEET WITH EXCELLENT MAGNETIC PROPERTY AND A METHOD FOR MANUFACTURING IT |
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. |
申请公布号 |
KR20140012363(A) |
申请公布日期 |
2014.02.03 |
申请号 |
KR20120079014 |
申请日期 |
2012.07.19 |
申请人 |
POSCO |
发明人 |
SHIM, HO KYUNG;KIM, JI HYUN |
分类号 |
B23K20/04;B32B15/01;B32B37/12 |
主分类号 |
B23K20/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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