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1. 发明申请

US20080271819A1 Ultra-high magnetic flux density grain-oriented electrical steel sheet excellent in iron loss at a high magnetic flux density and film properties and method for producing the same 有权
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).

2. 发明授权

US07399369B2 Ultra-high magnetic flux density grain-oriented electrical steel sheet excellent in iron loss at a high magnetic flux density and film properties and method for producing the same 有权
标题翻译：在高磁通密度下铁损优异的超高磁通密度晶粒取向电工钢板及其制造方法
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。

3. 发明授权

US07981223B2 Ultra-high magnetic flux density grain-oriented electrical steel sheet excellent in iron loss at a high magnetic flux density and film properties and method for producing the same 有权
标题翻译：在高磁通密度下铁损优异的超高磁通密度晶粒取向电工钢板及其制造方法
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）。

4. 发明申请

US20110061677A1 PRODUCTION METHOD OF HOT-ROLLED STEEL SHEET 审中-公开
标题翻译：热轧钢板的生产方法
公开(公告)号：US20110061677A1
公开(公告)日：2011-03-17
申请号：US12736827
申请日：2009-05-13
申请人： Katsuyuki Yanagihara , Yasumitsu Kondo
发明人： Katsuyuki Yanagihara , Yasumitsu Kondo
IPC分类号： B08B3/12
CPC分类号： B21B45/08 , B21B3/02
摘要： The present invention is a method of descaling a steel material which removes scale formed at the time of hot rolling a steel material by spraying jets of high pressure water from a plurality of nozzles on to the surface of the steel material, the method of descaling a steel material comprising giving pulsation of a frequency of 3.0 kHz to 200 kHz by direct vibration by a vibrator or vibration due to resonance to the high pressure water and setting a distance from each nozzle to the steel slab at 50 to 700 mm in range. Due to this, there is provided a method of producing a hot rolled steel material of a sufficiently good quality removing scale from a difficult-to-descale steel slab such as high Si steel without requiring high pressure water of an extremely high discharge pressure and while easing temperature restrictions on the heating furnace.
摘要翻译：本发明是一种除去钢材的方法，通过从多个喷嘴喷射高压水喷射到钢材的表面，除去钢材热轧时形成的氧化皮，除锈钢材，其包括通过振动器的直接振动或由于与高压水的共振引起的振动而产生3.0kHz至200kHz的频率的脉动，并且将距离每个喷嘴的距离设定在50至700mm范围内的钢坯。因此，提供了一种从难以除锈的钢板例如高Si钢制成具有足够高质量的去除垢的热轧钢材的方法，而不需要具有极高排出压力的高压水和减轻加热炉温度的限制。

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