公开(公告)号：US20080271819A1

公开(公告)日：2008-11-06

申请号：US12215540

申请日：2008-06-27

申请人： Eiichi Nanba ,  Katsuyuki Yanagihara ,  Satoshi Arai ,  Shuichi Yamazaki ,  Fumikazu Ando ,  Kazutoshi Takeda ,  Yousuke Kurosaki ,  Nobuo Tachibana

发明人： Eiichi Nanba ,  Katsuyuki Yanagihara ,  Satoshi Arai ,  Shuichi Yamazaki ,  Fumikazu Ando ,  Kazutoshi Takeda ,  Yousuke Kurosaki ,  Nobuo Tachibana

IPC分类号： C21D6/00 ,  C21D8/02

CPC分类号： C22C38/16 ,  C21D3/04 ,  C21D8/1244 ,  C21D8/1255 ,  C21D8/1266 ,  C21D8/1272 ,  C21D8/1277 ,  C21D8/1283 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/60 ,  H01F1/14775 ,  H01F1/18

摘要： The present invention is a grain-oriented electrical steel sheet characterized in that Bi is present at 0.01 to less than 1,000 ppm in terms of mass at the interface of the substrate steel and the primary film of the grain-oriented electrical steel sheet. The grain-oriented electrical steel sheet is produced by any of the processes of: before decarburization annealing, applying preliminary annealing for 1 to 20 sec. at 700° C. or higher and controlling an atmosphere in the temperature range; controlling the maximum attaining temperature B (° C.) before final cold rolling so that the maximum attaining temperature B may satisfy the expression, −10×ln(A)+1,100≦B≦10×ln(A)+1,220, in accordance with a Bi content A (ppm) and at the same time heating the steel sheet cold rolled to the final thickness to 700° C. or higher within 10 sec. or at a heating rate of 100° C./sec. or more before decarburization annealing, or immediately thereafter applying preliminary annealing for 1 to 20 sec. at 700° C. or higher; or controlling a TiO2 amount B added in relation to MgO of 100 as parts by weight and an MgO coating amount C (g/m2) so that the expression, A0.8≦B×C≦400, may be satisfied in accordance with the Bi content A (ppm).

公开(公告)号：US07399369B2

公开(公告)日：2008-07-15

申请号：US10484347

申请日：2002-07-16

申请人： Eiichi Nanba ,  Katsuyuki Yanagihara ,  Satoshi Arai ,  Shuichi Yamazaki ,  Fumikazu Ando ,  Kazutoshi Takeda ,  Yousuke Kurosaki ,  Nobuo Tachibana

发明人： Eiichi Nanba ,  Katsuyuki Yanagihara ,  Satoshi Arai ,  Shuichi Yamazaki ,  Fumikazu Ando ,  Kazutoshi Takeda ,  Yousuke Kurosaki ,  Nobuo Tachibana

IPC分类号： H01F1/147 ,  H01F1/18

CPC分类号： C22C38/16 ,  C21D3/04 ,  C21D8/1244 ,  C21D8/1255 ,  C21D8/1266 ,  C21D8/1272 ,  C21D8/1277 ,  C21D8/1283 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/60 ,  H01F1/14775 ,  H01F1/18

摘要： The present invention is a grain-oriented electrical steel sheet characterized in that Bi is present at 0.01 to less than 1,000 ppm in terms of mass at the interface of the substrate steel and the primary film of the grain-oriented electrical steel sheet. The grain-oriented electrical steel sheet is produced by any of the processes of: before decarburization annealing, applying preliminary annealing for 1 to 20 sec. at 700° C. or higher and controlling an atmosphere in the temperature range; controlling the maximum attaining temperature B (° C.) before final cold rolling so that the maximum attaining temperature B may satisfy the expression, −10×ln(A)+1,100≦B≦10×ln(A)+1,220, in accordance with a Bi content A (ppm) and at the same time heating the steel sheet cold rolled to the final thickness to 700° C. or higher within 10 sec. or at a heating rate of 100° C./sec. or more before decarburization annealing, or immediately thereafter applying preliminary annealing for 1 to 20 sec. at 700° C. or higher; or controlling a TiO2 amount B added in relation to MgO of 100 as parts by weight and an MgO coating amount C (g/m2) so that the expression, A0.8≦B×C≦400, may be satisfied in accordance with the Bi content A (ppm).

摘要翻译： 本发明是一种方向性电磁钢板，其特征在于，所述Bi在基板钢与晶粒取向电工钢板的一次膜的界面处的质量比为0.01〜小于1,000ppm。 晶粒取向电工钢板通过以下任一方法制造：在脱碳退火之前，进行1〜20秒的预退火。 在700℃以上，控制温度范围内的气氛; 控制最终冷轧前的最大达到温度B（℃），使得最大达到温度B可以满足以下表达式：-10×ln（A）+1,100 <= B <= 10×ln（A）+1,220，根据 Bi含量A（ppm），同时在10秒内将钢板冷轧至最终厚度至700℃以上。 或加热速率为100℃/秒。 或更多的脱碳退火之前，或者之后立即进行1〜20秒的预退火。 在700℃以上; 或控制相对于MgO为100重量份的TiO 2 B量和MgO涂布量C（g / m 2 O 2），使得表达式A 根据Bi含量A（ppm）可以满足0.8≤BxC≤400。

公开(公告)号：US07981223B2

公开(公告)日：2011-07-19

申请号：US12215540

申请日：2008-06-27

申请人： Eiichi Nanba ,  Katsuyuki Yanagihara ,  Satoshi Arai ,  Shuichi Yamazaki ,  Fumikazu Ando ,  Kazutoshi Takeda ,  Yousuke Kurosaki ,  Nobuo Tachibana

发明人： Eiichi Nanba ,  Katsuyuki Yanagihara ,  Satoshi Arai ,  Shuichi Yamazaki ,  Fumikazu Ando ,  Kazutoshi Takeda ,  Yousuke Kurosaki ,  Nobuo Tachibana

IPC分类号： H01F1/147

CPC分类号： C22C38/16 ,  C21D3/04 ,  C21D8/1244 ,  C21D8/1255 ,  C21D8/1266 ,  C21D8/1272 ,  C21D8/1277 ,  C21D8/1283 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/60 ,  H01F1/14775 ,  H01F1/18

摘要： The present invention is a grain-oriented electrical steel sheet characterized in that Bi is present at 0.01 to less than 1,000 ppm in terms of mass at the interface of the substrate steel and the primary film of the grain-oriented electrical steel sheet. The grain-oriented electrical steel sheet is produced by any of the processes of: before decarburization annealing, applying preliminary annealing for 1 to 20 sec. at 700° C. or higher and controlling an atmosphere in the temperature range; controlling the maximum attaining temperature B (° C.) before final cold rolling so that the maximum attaining temperature B may satisfy the expression, −10×ln(A)+1,100≦B≦10×ln(A)+1,220, in accordance with a Bi content A (ppm) and at the same time heating the steel sheet cold rolled to the final thickness to 700° C. or higher within 10 sec. or at a heating rate of 100° C./sec. or more before decarburization annealing, or immediately thereafter applying preliminary annealing for 1 to 20 sec. at 700° C. or higher; or controlling a TiO2 amount B added in relation to MgO of 100 as parts by weight and an MgO coating amount C (g/m2) so that the expression, A0.8≦B×C≦400, may be satisfied in accordance with the Bi content A (ppm).

摘要翻译： 本发明是一种方向性电磁钢板，其特征在于，所述Bi在基板钢与晶粒取向电工钢板的一次膜的界面处的质量比为0.01〜小于1,000ppm。 晶粒取向电工钢板通过以下任一方法制造：在脱碳退火之前，进行1〜20秒的预退火。 在700℃以上，控制温度范围内的气氛; 控制最终冷轧前的最大达到温度B（℃），使得最大达到温度B可以满足以下表达式：-10×ln（A）+ 1,100＆nlE; B＆nlE; 10×ln（A）+1,220， 根据Bi含量A（ppm），同时在10秒内将冷轧至最终厚度的钢板加热至700℃以上。 或加热速率为100℃/秒。 或更多的脱碳退火之前，或者之后立即进行1〜20秒的预退火。 在700℃以上; 或控制相对于MgO添加的TiO 2量为100重量份，MgO涂布量C（g / m 2），使得可以根据下式求出A0.8＆nlE; B×C＆nlE; 400的表达式 Bi含量A（ppm）。