发明名称 |
METHOD FOR MANUFACTURING HIGH SILICON GRAIN-ORIENTED ELECTRICAL STEEL SHEET WITH SUPERIOR CORE LOSS PROPERTY |
摘要 |
There is provided a method for manufacturing a high silicon grain-oriented electrical steel sheet. In a method for manufacturing a high silicon grain-oriented electrical steel sheet, comprising the steps of: reheating and hot-rolling a steel slab to produce a hot-rolled steel sheet; annealing the hot-rolled sheet and cold rolling the annealed steel sheet so as to adjust a thickness of the steel sheet; decarburization annealing the cold rolled steel sheet; and finish-annealing the decarburization annealed steel sheet for secondary recrystallization, the improved method further comprising the step of: coating a powder coating agent for siliconization on a surface of the decarburization annealed steel sheet in a slurry state, the powder coating agent including 100 part by weight of MgO powder and 0.5 - 120 part by weight of sintered powder of Fe-Si compound containing 25 70 wt.% Si sintered powder, the sintered powder having a grain size of -325 mesh; drying the resultant decarburization annealed steel sheet; and finish annealing the steel sheet under a conventional condition. |
申请公布号 |
WO2004044252(A1) |
申请公布日期 |
2004.05.27 |
申请号 |
WO2003KR02413 |
申请日期 |
2003.11.11 |
申请人 |
POSCO;CHOI, KYU-SEUNG;WOO, JONG-SOO;KIM, JAE-KWAN |
发明人 |
CHOI, KYU-SEUNG;WOO, JONG-SOO;KIM, JAE-KWAN |
分类号 |
C21D8/12;C23C10/02;C23C10/20;C23C10/30;C23C10/44;C23C10/46 |
主分类号 |
C21D8/12 |
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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