公开(公告)号：US06811619B2

公开(公告)日：2004-11-02

申请号：US10202117

申请日：2002-07-23

申请人： Yasuyuki Hayakawa ,  Hideo Yamagami ,  Seiji Okabe ,  Takeshi Imamura ,  Minoru Takashima ,  Mitsumasa Kurosawa

发明人： Yasuyuki Hayakawa ,  Hideo Yamagami ,  Seiji Okabe ,  Takeshi Imamura ,  Minoru Takashima ,  Mitsumasa Kurosawa

IPC分类号： H01F116

CPC分类号： C22C38/60 ,  C21D8/1233 ,  C21D8/125 ,  C21D8/1255 ,  C21D8/1272 ,  C21D8/1283 ,  C22C38/004 ,  C22C38/02

摘要： A method of manufacturing a grain-oriented steel sheet including hot-rolling a slab prepared using molten steel containing, by mass %, C of not more than about 0.08%, Si of about 2.0 to about 8.0% and Mn of about 0.005 to about 3.0%; optionally annealing the hot-rolled steel sheet; performing cold rolling once, or twice or more with intermediate annealing therebetween; performing primary recrystallization annealing in a low- or non-oxidizative atmosphere and adjusting the C content in the steel sheet after primary recrystallization annealing to be held in the range of about 0.005 to about 0.025 mass %; performing secondary recrystallization annealing; decarburization annealing; and, preferably, performing additional high-temperature continuous or batch annealing. A grain-oriented electrical steel sheet having a sufficiently high magnetic flux density and a low iron loss can be advantageously obtained even when it is manufactured without using an inhibitor.

摘要翻译： 一种制造含有热轧钢板的方法，该方法包括以质量％计含有不大于约0.08％的Si，约2.0至约8.0％的Si和约0.005至约 3.0％; 任选地退火热轧钢板; 在其间进行中间退火，进行一次或两次以上的冷轧; 在低或非氧化性气氛中进行一次再结晶退火，并将一次再结晶退火后的钢板中的C含量调整为约0.005〜约0.025质量％的范围; 进行二次再结晶退火; 脱碳退火; 并且优选进行附加的高温连续或间歇退火。 即使在不使用抑制剂的情况下制造也可以有利地获得具有足够高的磁通密度和低铁损的晶粒取向电工钢板。