公开(公告)号：US20160247613A1

公开(公告)日：2016-08-25

申请号：US15027368

申请日：2014-10-20

Applicant: NORTHEASTERN UNIVERSITY

Inventor： Guodong WANG ,  Yuanxiang ZHANG ,  Yang WANG ,  Xiang LU ,  Feng FANG ,  Guangming CAO ,  Chenggang LI ,  Guo YUAN ,  Yunbo XU ,  Zhenyu LIU ,  Zhaodong WANG

IPC: H01F1/147 ,  C22C38/06 ,  C22C38/04 ,  B22D11/041 ,  C22C38/00 ,  C21D9/52 ,  C21D8/04 ,  B22D11/00 ,  C22C38/12 ,  C22C38/02

CPC classification number: H01F1/14766 ,  B22D11/001 ,  B22D11/041 ,  B22D11/0622 ,  B22D11/1206 ,  C21D8/0405 ,  C21D8/0415 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0463 ,  C21D8/0473 ,  C21D8/0478 ,  C21D8/12 ,  C21D8/1205 ,  C21D8/1211 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1261 ,  C21D8/1272 ,  C21D8/1277 ,  C21D9/52 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

Abstract: The preparation method includes steps of (1) melting steel according to in weight percentage 0.001-0.003% of C, 5.0-6.6% of Si, 0.2-0.3% of Mn, 0.05-0.12% of Al, 0.01-0.04% of V, 0.03-0.06% of Nb, 0.02-0.03% of S, 0.009-0.020% of N, O which is less than or equal to 0.0020%, and the balance being Fe and unavoidable impurities; (2) forming cast strips after a thin-strip casting course; (3) hot-rolling the cast strips under inert atmosphere conditions; (4) cooling the hot-rolled cast strips to 550-600 DEG C, coiling and performing low-temperature hot rolling/warm rolling on the coiled cast strips under a nitrogen atmosphere condition; (5) removing oxidized scales though pickling, performing cold rolling multiple times; (6) performing recrystallization annealing, coating with an MgO layer, and coiling; (7) performing purification annealing under hydrogen circulation conditions; and (8) removing oxidized scales, coating with an insulating layer, performing flat stretch annealing, and air-cooled coiling.

Abstract translation: 该制备方法包括以下步骤：（1）将重量百分比分别为C，0.001-0.003％的C，5.0-6.6％的Si，0.2-0.3％的Mn，0.05-0.12％的Al，0.01-0.04％的V ，0.03-0.06％的Nb，0.02-0.03％的S，0.009-0.020％的N，O，小于或等于0.0020％，余量为Fe和不可避免的杂质; （2）在薄带铸造过程之后形成铸造带; （3）在惰性气氛条件下对铸造带进行热轧; （4）将热轧铸造带冷却至550〜600℃，在氮气氛下对卷取的铸造带进行卷取和低温热轧/热轧; （5）通过酸洗除去氧化鳞片，进行多次冷轧; （6）进行再结晶退火，用MgO层进行涂布和卷取; （7）在氢循环条件下进行纯化退火; 和（8）去除氧化鳞片，用绝缘层涂覆，进行平面拉伸退火和空气冷却卷取。