公开(公告)号：EP3196325A4

公开(公告)日：2018-03-28

申请号：EP15838897

申请日：2015-08-13

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： YASHIKI HIROYOSHI ,  MURAKAMI KENICHI ,  MORISHIGE NOBUSATO ,  TADA HIROTOSHI ,  NATORI YOSHIAKI

IPC分类号： C22C38/00 ,  B22D11/00 ,  B32B15/18 ,  C21D8/12 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/60 ,  H01F1/147 ,  H01F1/16 ,  H01F1/18

CPC分类号： C21D8/1222 ,  B22D11/001 ,  B32B15/18 ,  C21D8/12 ,  C21D8/1233 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/60 ,  H01F1/16

摘要： A grain-oriented electrical steel sheet includes a steel layer and an insulation coating arranged in directly contact with the steel layer thereon. The steel layer includes, as a chemical composition, by mass%, 2.9 to 4.0% of Si, 2.0 to 4.0% of Mn, 0 to 0.20% of Sn, and 0 to 0.20% of Sb. In the steel layer, a silicon content and a manganese content expressed in mass% satisfy 1.2% ‰¤ Si - 0.5 × Mn ‰¤ 2.0%, and a tin content and an antimony content expressed in mass% satisfy 0.005% ‰¤ Sn + Sb ‰¤ 0.20%.

公开(公告)号：EP2412831A4

公开(公告)日：2017-05-03

申请号：EP10756014

申请日：2010-03-19

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： MORISHIGE NOBUSATO ,  MURAKAMI KENICHI ,  HONMA HOTAKA ,  KUBO YUJI ,  MIZUKAMI KAZUMI ,  TANAKA KOKI ,  TAKEBAYASHI SEIKI

IPC分类号： C21D8/12 ,  B21B3/02 ,  C21D9/46 ,  C22C1/00 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/60 ,  H01F1/16 ,  H01F27/25 ,  H01F41/02

CPC分类号： C21D8/1222 ,  B21B3/02 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1272 ,  C21D2201/05 ,  C22C1/002 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/60 ,  H01F1/16 ,  H01F41/0233

摘要： A slab having a predetermined composition is heated to 1280°C or more. The slab is hot-rolled to obtain a hot-rolled steel sheet. The hot-rolled steel sheet is annealed to obtain an annealed steel sheet. The annealed steel sheet is cold-rolled to obtain a cold-rolled steel sheet. The cold-rolled steel sheet is decarburization annealed to obtain a decarburization annealed steel sheet. The decarburization annealed steel sheet is coiled in a coil state. The coil-state decarburization annealed steel sheet is finish-annealed. The cold-rolled steel sheet is heated to a temperature of 800°C or more at a rate of 30°C/sec or more and 100°C/sec or less during increasing temperature of the cold-rolled steel sheet in the decarburization annealing or before the decarburization annealing. The decarburization annealed steel sheet is heated at a rate of 20°C/h or less within a temperature range of 750°C or more and 1150°C or less during increasing temperature of the decarburization annealed steel sheet in the finish annealing.

摘要翻译： 具有规定组成的钢坯加热至1280℃以上。 板坯进行热轧，得到热轧钢板。 的热轧钢板进行退火，以获得关于退火钢板。 经退火的钢薄板进行冷轧，得到冷轧钢板。 的冷轧钢板脱碳退火，得到脱碳退火钢板。 脱碳退火后的钢板是在线圈状态卷绕。 退火后的钢板的线圈状态的脱碳是最终退火。 的冷轧钢板在脱碳退火增加冷轧钢板的温度时，在30℃/秒以上且100℃/秒或更低的速率加热至800℃或更高的温度 或脱碳退火之前。 脱碳退火后的钢板在成品退火增大脱碳退火后的钢板的温度期间，在20℃/小时或更低的温度范围内的750℃以上且1150℃以下的范围内的速率加热。