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    • 5. 发明申请
    • METHOD FOR MANUFACTURING HIGH SILICON GRAIN-ORIENTED ELECTRICAL STEEL SHEET WITH SUPERIOR CORE LOSS PROPERTY
    • 用于制造具有超级核心损耗特性的高硅晶粒电工钢板的方法
    • WO2004044252A1
    • 2004-05-27
    • PCT/KR2003/002413
    • 2003-11-11
    • POSCOCHOI, Kyu-SeungWOO, Jong-SooKIM, Jae-Kwan
    • CHOI, Kyu-SeungWOO, Jong-SooKIM, Jae-Kwan
    • C21D8/12
    • C23C10/30C21D8/1244C21D8/1255C21D8/1277C23C10/02C23C10/20C23C10/44C23C10/46
    • 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.
    • 提供了制造高硅晶粒取向电工钢板的方法。 在制造高硅晶粒取向电工钢板的方法中,包括以下步骤:对钢坯进行再加热和热轧以制造热轧钢板; 对该热轧板进行退火,对退火后的钢板进行冷轧,调整钢板的厚度; 冷轧钢板脱碳退火; 对用于二次再结晶的脱碳退火钢板进行最终退火,该改进方法还包括以下步骤:在浆料状态下在脱碳退火钢板的表面上涂覆硅化粉末涂料,所述粉末涂料包括100份 的MgO粉末和0.5〜120重量份含有25重量%Si烧结粉末的Fe-Si化合物的烧结粉末,烧结粉末的粒径为-325目; 干燥所得脱碳退火钢板; 并在常规条件下对钢板进行最终退火。