公开(公告)号：US20150034212A1

公开(公告)日：2015-02-05

申请号：US14379529

申请日：2012-03-27

申请人： Feng Zhang ,  Xiandong Liu ,  Shishu Xie ,  Xuejun Lu ,  Xiao Chen ,  Aihua Ma ,  Peili Zhang ,  Yanwei Wang ,  Lan Zhang ,  Hongxu Hei

发明人： Feng Zhang ,  Xiandong Liu ,  Shishu Xie ,  Xuejun Lu ,  Xiao Chen ,  Aihua Ma ,  Peili Zhang ,  Yanwei Wang ,  Lan Zhang ,  Hongxu Hei

IPC分类号： H01F1/147 ,  C21C7/068 ,  C22C38/00 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21C7/06 ,  C21C7/00

CPC分类号： H01F1/14775 ,  C21C7/0006 ,  C21C7/06 ,  C21C7/068 ,  C21C7/10 ,  C21D8/12 ,  C21D9/46 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  H01F1/14766 ,  H01F1/14791 ,  H01F1/16

摘要： A non-oriented electrical steel sheet with fine magnetic performance, and a calcium treatment method therefor, including an RH (Ruhrstahl-Heraeus) refinement step. The RH refinement step sequentially comprises a decarbonization step, an aluminum deoxidation step, and a step of adding calcium alloy. In the step of adding calcium alloy, time when the calcium alloy is added satisfies the following condition: time interval between Al and Ca/total time after ΣAl=0.2-0.8. In this method, production cost is reduced, the production process is simple, a normal processing cycle of RH refinement is not affected, the device is convenient in operation and is controllable, and foreign substances are controllable in both shape and quantities. The non-oriented electrical steel sheet prepared according to the present invention has fine magnetic performance, and the method can be used for mass production of the non-oriented electrical steel sheet with fine magnetic performance.

摘要翻译： 一种具有细磁性能的无取向电工钢板及其钙处理方法，包括RH（Ruhrstahl-Heraeus）精制步骤。 RH精炼步骤依次包括脱碳步骤，铝脱氧步骤和添加钙合金的步骤。 在添加钙合金的步骤中，添加钙合金的时间满足以下条件：Al与Ca之间的时间间隔/ Al = 0.2-0.8之后的总时间。 在这种方法中，生产成本降低，生产工艺简单，RH精加工的正常加工周期不受影响，设备操作方便，可控，异物在形状和数量上都是可控的。 根据本发明制备的无取向电工钢板具有优良的磁性能，并且该方法可用于批量生产具有优良磁性能的无方向性电工钢板。