公开(公告)号：US06331215B1

公开(公告)日：2001-12-18

申请号：US09493864

申请日：2000-01-28

Applicant: Tetsuo Toge ,  Michiro Komatsubara ,  Atsuhito Honda ,  Kenichi Sadahiro ,  Kunihiro Senda

Inventor： Tetsuo Toge ,  Michiro Komatsubara ,  Atsuhito Honda ,  Kenichi Sadahiro ,  Kunihiro Senda

IPC: H01F104

CPC classification number: H01F1/14783 ,  C21D8/1233 ,  C21D8/1261 ,  C22C38/02

Abstract: A grain-oriented electromagnetic steel sheet is provided which has a low ratio of iron loss in a weaker magnetic field to that in a stronger magnetic field and has special advantage in EI cores and the like. Also provided is a process for producing that steel sheet. The grain-oriented electromagnetic steel sheet is characterized in that its crystal grains of important components are specified in terms of their proportions in number, and the contents of Al, Ti and B, with a forsterite film formed on a surface of the steel sheet. In the process a low-Al silicon slab is heated at below 1,250° C. before hot rolling and the hot-rolled sheet is annealed with a temperature rise in the range of from 5 to 25° C./sec and at a temperature of from about 800 to 1,000 for a period of time of shorter than about 100 seconds.

Abstract translation: 提供了一种晶粒取向的电磁钢板，其在弱磁场中的铁损比与较强磁场中的铁损比率低，并且在EI磁芯等方面具有特别的优点。 还提供了用于生产该钢板的方法。 面向电磁钢板的特征在于，其重要组分的晶粒​​以其在钢板表面上形成的镁橄榄石膜的数量比例，Al，Ti和B的含量来确定。 在该方法中，在热轧之前将低Al硅板坯加热到低于1250℃，并且将热轧板材以5至25℃/秒的温度升温退火，并且在 从约800至1,000小于约100秒的时间。

公开(公告)号：US06676771B2

公开(公告)日：2004-01-13

申请号：US10208907

申请日：2002-07-30

Applicant: Minoru Takashima ,  Tetsuo Toge ,  Yasuyuki Hayakawa ,  Mitsumasa Kurosawa ,  Michiro Komatsubara

Inventor： Minoru Takashima ,  Tetsuo Toge ,  Yasuyuki Hayakawa ,  Mitsumasa Kurosawa ,  Michiro Komatsubara

IPC: H01F100

CPC classification number: C22C38/04 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1261 ,  C21D8/1272 ,  C21D8/1283 ,  C22C38/008 ,  C22C38/02 ,  C22C38/16 ,  C22C38/60

Abstract: Manufacturing a grain-oriented electrical steel sheet, a secondary recrystallization step and a forsterite coating forming step are separated into first batch annealing for developing secondary recrystallization and second batch annealing for forming a forsterite coating, with continuous annealing performed between these two steps of batch annealing, to produce a grain-oriented electrical steel sheet that is superior in both magnetic characteristics and coating characteristics.

Abstract translation: 制造晶粒取向电工钢板，二次再结晶工序和镁橄榄石涂层成形工序分离成第一批次退火，进行二次再结晶化和第二次退火，形成镁橄榄石涂层，在两步间歇退火中进行连续退火 ，以产生磁特性和涂层特性都优异的晶粒取向电工钢板。

公开(公告)号：US6039818A

公开(公告)日：2000-03-21

申请号：US954504

申请日：1997-10-20

Applicant: Tetsuo Toge ,  Michiro Komatsubara ,  Atsuhito Honda ,  Kenichi Sadahiro ,  Kunihiro Senda

Inventor： Tetsuo Toge ,  Michiro Komatsubara ,  Atsuhito Honda ,  Kenichi Sadahiro ,  Kunihiro Senda

IPC: C21D8/12 ,  C22C38/02 ,  H01F1/147 ,  H01F1/18

CPC classification number: H01F1/14783 ,  C21D8/1233 ,  C22C38/02 ,  C21D8/1261

Abstract: A grain-oriented electromagnetic steel sheet is provided which has a low ratio of iron loss in a weaker magnetic field to that in a stronger magnetic field and has special advantage in EI cores and the like. Also provided is a process for producing that steel sheet. The grain-oriented electromagnetic steel sheet is characterized in that its crystal grains of important components are specified in terms of their proportions in number, and the contents of Al, Ti and B, with a forsterite film formed on a surface of the steel sheet. In the process a low-Al silicon slab is heated at below 1,250.degree. C. before hot rolling and the hot-rolled sheet is annealed with a temperature rise in the range of from 5 to 25.degree. C./sec and at a temperature of from about 800 to 1,000 for a period of time of shorter than about 100 seconds.

Abstract translation: 提供了一种晶粒取向的电磁钢板，其在弱磁场中的铁损比与较强磁场中的铁损比率低，并且在EI磁芯等方面具有特别的优点。 还提供了用于生产该钢板的方法。 面向电磁钢板的特征在于，其重要组分的晶粒​​以其在钢板表面上形成的镁橄榄石膜的数量比例，Al，Ti和B的含量来确定。 在此过程中，将低Al硅板在热轧前加热至低于1250℃，并将热轧板退火温度为5至25℃/秒，温度为 从约800至1,000小于约100秒的时间。

公开(公告)号：US5855694A

公开(公告)日：1999-01-05

申请号：US907306

申请日：1997-08-06

Applicant: Tetsuo Toge ,  Atsuhito Honda ,  Mineo Muraki ,  Kenichi Sadahiro ,  Minoru Takashima

Inventor： Tetsuo Toge ,  Atsuhito Honda ,  Mineo Muraki ,  Kenichi Sadahiro ,  Minoru Takashima

IPC: C21D8/12 ,  H01F1/04

CPC classification number: C21D8/1261 ,  C21D8/1227 ,  C21D8/1233

Abstract: Production of grain-oriented silicon steel sheet, in which the heating temperature of slabs is as low as that in common steels and good magnetic properties are maintained, without applying a nitriding process. The contents of Al, Se and S substantially satisfy formulae (1) and (2), and both or either of formulae (3) and (4):�Al (wt %)!+(5/9){�Se (wt %)!+2.47�S(wt %)!}.ltoreq.0.027 (1)�Se (wt %)!+2.47�S (wt %)!.ltoreq.0.025 (2)0.016.ltoreq.�Al (wt %)!+(5/9){�Se (wt %)!+2.47 �S (wt %)!}(3)0.010.ltoreq.�Al (wt %)! (4)Annealing of the hot rolling sheet is applied at a temperature of about 800.degree. C. or more, and about 1000.degree. C. or below; preferably, cold rolling is applied at about 100.degree. C. or more, using a tandem mill.

Abstract translation: 在不进行氮化处理的情况下，生产其中板坯的加热温度与普通钢的加热温度一样低并且保持良好的磁性能的晶粒取向硅钢板。 Al，Se和S的含量基本上满足式（1）和（2），式（3）和（4）中的任一个：[Al（wt％）] +（5/9）{[Se 重量％）] + 2.47 [S（重量％）]}