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发明公开
CN103305659A 磁性优良的无取向电工钢板及其钙处理方法 有权 转让

磁性优良的无取向电工钢板及其钙处理方法
摘要：
本发明涉及一种磁性优良的无取向电工钢板及其钙处理方法。本发明的方法，包括RH(Ruhrstahl-Heraeus)精练步骤，该RH精练步骤依次包括脱碳步骤、铝脱氧步骤、添加钙合金步骤，其特征在于，在该添加钙合金步骤中，添加钙合金的时间满足下述条件：Al、Ca时间间隔/∑Al后总时间＝0.2～0.8。本发明的方法具有生产成本降低、生产工艺简单、不影响RH精炼正常处理周期、设备方便可控，并且能使夹杂物形态、数量受控的特点，通过本发明的方法制备的无取向电工钢磁性优良，可用于磁性优良的无取向电工钢的大规模生产。
摘要（英）：

The invention relates to a non-oriented electrical steel plate with excellent magnetism and a calcium treatment method thereof. The method provided by the invention comprises the step of RH (Ruhrstahl-Heraeus) refining, and the RH refining step successively includes a procedure of decarburization, a procedure of aluminum deoxidation and a procedure of addition of calcium alloy and is characterized in that in the procedure of addition of the calcium alloy, time for addition of the calcium alloy satisfies the equation that Al and Ca time interval/sigma Al total time is equal to 0.2 to 0.8. The calcium treatment method provided by the invention has the characteristics of reduced production cost, simple production process, no influence on a normal treatment period of RH refining, conveniently controllable equipment and controlled forms and quantities of inclusions; and non-oriented electrical steel prepared by using the method has excellent magnetism, and the method can be used for large scale production of the non-oriented electrical steel with excellent magnetism.

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