公开(公告)号：US20130306202A1

公开(公告)日：2013-11-21

申请号：US13979790

申请日：2011-12-16

申请人： Hyung-Don Joo ,  Chang-Soo Kim ,  Jong-Tae Park ,  Jong-Ho Park ,  Byeong-Goo Kim ,  Jin-Wook Seo

发明人： Hyung-Don Joo ,  Chang-Soo Kim ,  Jong-Tae Park ,  Jong-Ho Park ,  Byeong-Goo Kim ,  Jin-Wook Seo

IPC分类号： C21D8/02

CPC分类号： C21D8/0263 ,  C21D6/008 ,  C21D8/12 ,  C21D8/1272 ,  C21D9/46 ,  C22C1/02 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

摘要： Provided is a method for manufacturing a grain-oriented electrical steel sheet, the method comprising: heating a grain-oriented electrical steel sheet slab; hot-rolling the heated slab; optionally annealing the hot-rolled steel sheet; subjecting the resulting steel sheet to one cold rolling or two or more cold rollings with intermediate annealing therebetween; subjecting the cold-rolled steel sheet to primary recrystallization annealing; and subjecting the annealed steel sheet to secondary recrystallization annealing, wherein the primary recrystallization annealing sequentially comprises an ultra-rapid heating process of heating the steel sheet at an average heating rate of 300° C./sec or higher, a rapid heating process of heating the steel sheet at a lower average heating rate than the average heating rate of the ultra-rapid heating process, but not lower than 100° C./sec, and a general heating process of heating the steel sheet at a lower average heating rate than the average heating rate of the rapid heating process.

摘要翻译： 本发明提供一种方向性电磁钢板的制造方法，其特征在于，包括：对取向电工钢板进行加热; 热轧板坯; 任选地退火热轧钢板; 对所得钢板进行一次冷轧或两次以上的冷轧，中间退火; 对冷轧钢板进行一次再结晶退火; 对退火后的钢板进行二次再结晶退火，其中，一次再结晶退火依次包括以300℃/秒以上的平均加热速度对钢板进行加热的超快速加热工序，加热快速加热 该钢板的平均加热速度低于超快速加热工艺的平均加热速率，但不低于100℃/秒，以及以较低的平均加热速率加热钢板的一般加热过程 平均加热速度快速加热。

公开(公告)号：US09663839B2

公开(公告)日：2017-05-30

申请号：US13979790

申请日：2011-12-16

申请人： Hyung-Don Joo ,  Chang-Soo Kim ,  Jong-Tae Park ,  Jong-Ho Park ,  Byeong-Goo Kim ,  Jin-Wook Seo

发明人： Hyung-Don Joo ,  Chang-Soo Kim ,  Jong-Tae Park ,  Jong-Ho Park ,  Byeong-Goo Kim ,  Jin-Wook Seo

IPC分类号： C21D8/02 ,  C21D8/12 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C21D6/00 ,  C22C1/02

CPC分类号： C21D8/0263 ,  C21D6/008 ,  C21D8/12 ,  C21D8/1272 ,  C21D9/46 ,  C22C1/02 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

摘要： Provided is a method for manufacturing a grain-oriented electrical steel sheet, the method comprising: heating a grain-oriented electrical steel sheet slab; hot-rolling the heated slab; optionally annealing the hot-rolled steel sheet; subjecting the resulting steel sheet to one cold rolling or two or more cold rollings with intermediate annealing therebetween; subjecting the cold-rolled steel sheet to primary recrystallization annealing; and subjecting the annealed steel sheet to secondary recrystallization annealing, wherein the primary recrystallization annealing sequentially comprises an ultra-rapid heating process of heating the steel sheet at an average heating rate of 300° C./sec or higher, a rapid heating process of heating the steel sheet at a lower average heating rate than the average heating rate of the ultra-rapid heating process, but not lower than 100° C./sec, and a general heating process of heating the steel sheet at a lower average heating rate than the average heating rate of the rapid heating process.