公开(公告)号：US08177920B2

公开(公告)日：2012-05-15

申请号：US11663751

申请日：2005-11-28

Applicant: Yukihiro Shingaki ,  Minoru Takashima ,  Tadashi Nakanishi ,  Takeshi Murai

Inventor： Yukihiro Shingaki ,  Minoru Takashima ,  Tadashi Nakanishi ,  Takeshi Murai

IPC: C21D8/12 ,  C22C38/02 ,  H01F1/16 ,  H01F27/245

CPC classification number: C21C7/0087 ,  C21C7/076 ,  C21C7/10 ,  C21D8/12 ,  C22C38/02 ,  C22C38/04 ,  H01F1/14775 ,  Y02P10/242

Abstract: The present invention provides a grain-oriented electrical steel sheet produced by a method for promoting secondary recrystallization without an inhibitor, the grain-oriented electrical steel sheet including 2.0% or more and 4.5% or less of Si and 0.01% or more and 0.5% or less of Mn on a mass % basis, wherein the number of oxide particles having a diameter of 1 to 3 μm among that (oxide particles) of containing Ca and/or Mg is 400 or less per unit area (1 cm2) in a transverse cross-section perpendicular to a rolling direction. Therefore, the grain-oriented electrical steel sheet has excellent stable magnetic properties throughout the length of a coil.

Abstract translation: 本发明提供一种通过不用抑制剂促进二次再结晶的方法制造的方向性电磁钢板，所述方向性电磁钢板包括2.0％以上且4.5％以下的Si，0.01％以上且0.5％以下， 以含有Ca和/或Mg的（氧化物粒子）中的直径为1〜3μm的氧化物粒子的数量为单位面积（1cm 2）为400以下， 垂直于轧制方向的横截面。 因此，晶粒取向电工钢板在整个线圈长度上具有优异的稳定的磁性能。

公开(公告)号：US20060124207A1

公开(公告)日：2006-06-15

申请号：US10537194

申请日：2003-12-03

Applicant: Minoru Takashima ,  Masaaki Kohno ,  Katsumi Yamada ,  Masaki Kawano ,  Kaoru Sato

Inventor： Minoru Takashima ,  Masaaki Kohno ,  Katsumi Yamada ,  Masaki Kawano ,  Kaoru Sato

IPC: C21D11/00 ,  C21D8/04

CPC classification number: H01F1/16 ,  C21D8/1272 ,  C22C38/004 ,  C22C38/02 ,  C22C38/06 ,  C22C38/08 ,  C22C38/16

Abstract: When a non-oriented electrical steel sheet is manufactured, simultaneously having superior magnetic properties and high strengths, a composition containing 0.02% or less of C, 4.5% or less of Si, 5.0% or less (including 0) of Ni, and 0.2% to 4.0% of Cu is used, and a solute Cu is allowed to appropriately remain in finish annealing. In the steel sheet thus obtained, finely shaped Cu is precipitated by aging treatment, and while the magnetic properties are not degraded, the yield stress is increased to not less than CYS (MPa) represented by the following formula: note CYS=180+5,600[% C]+95[% Si]+50[% Mn]+37[% Al]+435[% P]+25[% Ni]+22d−1/2 where d is an average grain diameter (mm) of crystal grains.

Abstract translation: 当制造同时具有优异的磁特性和高强度的无取向电工钢板时，含有C：0.02％以下，Si：4.5％以下，5.0％以下（含0）Ni，0.2 使用％〜4.0％的Cu，使溶质Cu适当地保持在最终退火中。 在这样得到的钢板中，通过时效处理使细小的Cu析出，而在磁特性不降低的同时，屈服应力提高至不低于下式表示的CYS（MPa）：< 公式description =“In-line Formulas”end =“lead”？> note <？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In CYC = 180 + 5600 [％C] +95 [％Si] +50 [％Mn] +37 [％Al] +435 [％P] +25 [％Ni] + 22d 线内公式描述=“在线公式”end =“tail”？>其中d是晶粒的平均粒径（mm）。

公开(公告)号：US20060076086A1

公开(公告)日：2006-04-13

申请号：US10530839

申请日：2003-10-27

Applicant: Takashi Terashima ,  Minoru Takashima ,  Yasuyuki Hayakawa

Inventor： Takashi Terashima ,  Minoru Takashima ,  Yasuyuki Hayakawa

IPC: H01F1/04

CPC classification number: C22C38/02 ,  C21D1/76 ,  C21D8/1272 ,  C21D9/46 ,  C22C38/04 ,  C22C38/60 ,  H01F1/16

Abstract: In a method for manufacturing a grain-oriented electrical steel sheet using steel containing less than 100 ppm of Al and 50 ppm or less each of N, S, and Se as a starting material, purification annealing is performed at 1050° C. or more, the partial pressure of hydrogen in the atmosphere being adjusted to 0.4 atm or less in a temperature range above 1170° C. for a purification annealing conducted at a temperature above 1170° C., or 0.8 atm or less in a temperature range of 1050° C. or more for a purification annealing conducted at a temperature of 1170° C. or less, to prevent deterioration of the bend properties due to the impurities.

Abstract translation: 在使用含有少于100ppm Al和50ppm以下的N，S，Se作为原料的钢的方向性电磁钢板的制造方法中，在1050℃以上进行纯化退火 ，在1170℃以上的温度范围内将气氛中的氢分压调节至0.4atm以下，进行在1170℃以上的温度下进行的纯化退火，在1050℃以上的温度范围内进行纯化退火 ℃以上，在1170℃以下进行纯化退火，以防止杂质引起的弯曲特性的劣化。

公开(公告)号：US06758915B2

公开(公告)日：2004-07-06

申请号：US10297423

申请日：2002-12-05

Applicant: Minoru Takashima ,  Mineo Muraki ,  Hiroi Yamaguchi ,  Mitsumasa Kurosawa ,  Michiro Komatsubara

Inventor： Minoru Takashima ,  Mineo Muraki ,  Hiroi Yamaguchi ,  Mitsumasa Kurosawa ,  Michiro Komatsubara

IPC: H01F104

CPC classification number: C23C14/228 ,  C21D8/1288 ,  C22C38/06 ,  C23C14/08

Abstract: The invention is a grain-oriented magnetic steel sheet having extremely low iron loss, suitable for use as an iron core material for transformers and power generators, and a method for producing the same. The method includes forming a coating layer on a surface of a steel sheet having a thickness of 0.27 mm or less by vapor deposition in a low oxidizing atmosphere with an oxygen partial pressure (Po2) of less than 0.1 atm and a total pressure of 0.1 atm or more. The steel sheet has extremely low iron loss with a thickness of 0.27 mm or less and includes a coating layer formed by vapor deposition on a matrix surface.

Abstract translation: 本发明是适用于变压器和发电机的铁芯材料的铁损极低的晶粒取向电磁钢板及其制造方法。 该方法包括在氧分压低于0.1atm，总压力0.1atm的低氧化气氛中通过气相沉积在厚度为0.27mm或更小的钢板的表面上形成涂层 或者更多。 钢板的铁损非常低，厚度为0.27mm以下，并且包括通过气相沉积在基体表面上形成的涂层。

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：US6136456A

公开(公告)日：2000-10-24

申请号：US177476

申请日：1998-10-23

Applicant: Michiro Komatsubara ,  Hiroi Yamaguchi ,  Minoru Takashima ,  Mineo Muraki

Inventor： Michiro Komatsubara ,  Hiroi Yamaguchi ,  Minoru Takashima ,  Mineo Muraki

IPC: C23C22/00 ,  C21D8/12 ,  C21D9/46 ,  H01F1/147 ,  H01F1/16 ,  B32B15/00 ,  C25D7/00 ,  H01F1/04

CPC classification number: C23C28/321 ,  C21D8/1277 ,  C21D8/1288 ,  C23C28/322 ,  C23C28/345 ,  C23C28/3455 ,  H01F1/14783 ,  Y10T428/12465 ,  Y10T428/12472 ,  Y10T428/12611 ,  Y10T428/12722 ,  Y10T428/12799 ,  Y10T428/12854 ,  Y10T428/12937 ,  Y10T428/12972 ,  Y10T428/12993

Abstract: Grain oriented electrical steel sheet with a very low iron loss and a method for producing the same, wherein the surface of the iron substrate of the grain oriented electrical steel sheet is subjected to an enhancement treatment of crystal grain orientation or surface smoothing to a mean roughness of about 0.20 .mu.m or less, electroplating a chromium plating layer on the substrate with heterogeneous growth, and applying a tension coating film to the plating layer.

Abstract translation: 具有非常低的铁损的晶粒取向电工钢板及其制造方法，其中使晶粒取向电工钢板的铁基材的表面进行晶粒取向或表面平滑化的增强处理至平均粗糙度 约0.20μm以下，在基板上镀上不均匀生长的镀铬层，向镀层施加张力涂膜。

公开(公告)号：US09187798B2

公开(公告)日：2015-11-17

申请号：US13703833

申请日：2011-06-17

Applicant: Masanori Takenaka ,  Minoru Takashima ,  Toshito Takamiya

Inventor： Masanori Takenaka ,  Minoru Takashima ,  Toshito Takamiya

IPC: H01F1/04 ,  C21D8/00 ,  C22C38/02 ,  C21D8/02 ,  C21D8/12 ,  C22C38/00 ,  C22C38/06 ,  H01F1/16

CPC classification number: C21D8/0205 ,  C21D8/12 ,  C21D8/1216 ,  C21D8/1244 ,  C21D2201/05 ,  C22C38/004 ,  C22C38/02 ,  C22C38/06 ,  C22C38/60 ,  H01F1/16

Abstract: The present invention provides a method for manufacturing a grain oriented electrical steel sheet, including preparing as a material a steel slab having a predetermined composition and carrying out at least two cold rolling operations, characterized in that a thermal treatment is carried out, prior to any one of cold rolling operations other than final cold rolling, at temperature in the range of 500° C. to 750° C. for a period in the range of 10 minutes to 480 hours. The grain oriented electrical steel sheet of the present invention exhibits through utilization of austenite-ferrite transformation superior magnetic properties after secondary recrystallization.

Abstract translation: 本发明提供一种制造晶粒取向电工钢板的方法，包括制备具有预定组成的钢板并进行至少两次冷轧操作的材料，其特征在于，在任何 在最终冷轧之外的冷轧操作之一，在500℃至750℃的温度范围内，持续10分钟至480小时的时间。 本发明的晶粒取向电工钢板通过二次再结晶后的奥氏体 - 铁素体相变优异的磁特性表现出来。

公开(公告)号：US20130143003A1

公开(公告)日：2013-06-06

申请号：US13814344

申请日：2011-08-04

Applicant: Masanori Takenaka ,  Minoru Takashima ,  Hiroi Yamaguchi ,  Takeshi Omura

Inventor： Masanori Takenaka ,  Minoru Takashima ,  Hiroi Yamaguchi ,  Takeshi Omura

IPC: H01F1/18

CPC classification number: H01F1/18 ,  C21D1/38 ,  C21D8/12 ,  C21D8/1277 ,  C21D8/1283 ,  C21D2201/05 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  Y10T428/24628

Abstract: A grain oriented electrical steel sheet has sufficiently low iron loss and having less conventionally-concerned warpage of the steel sheet even after the steel sheet is subjected to artificial magnetic domain refining treatment, where strain-introducing treatment is conducted with high energy so that an iron loss-reducing effect can be maximized. The grain oriented electrical steel sheet is obtained by adjusting tension to be applied to a tension-applying insulating coating, or to both surfaces of the steel sheet by the tension-applying insulating coating, before strain-introducing treatment in the range of Formula (1): 1.0≦(tension applied to non-strain-introduced surface)/(tension applied to strain-introduced surface)≦2.0  (1), and by controlling the amount of warpage of the steel sheet toward the strain-introduced surface side after strain-introducing treatment in the range of 1 mm or more and 10 mm or less.

Abstract translation: 即使在对钢板进行人造磁畴精制处理之后，晶粒取向电工钢板也具有足够低的铁损，并且具有较少的常规的钢板翘曲，其中以高能量进行应变导入处理， 减少损失的效果可以最大化。 晶粒取向电工钢板通过在应变导入处理之前通过张力施加绝缘涂层调节施加到张力施加绝缘涂层的张力或钢板的两个表面，在式（1）的范围内 ）：2.0（1）中的1.0 @（施加到非应变导入表面的张力）/（施加到应变导入表面的张力）@ 2.0（1），并且通过控制钢板朝向应变导入表面侧的翘曲量 应变引入处理在1mm以上且10mm以下的范围内。

公开(公告)号：US07513959B2

公开(公告)日：2009-04-07

申请号：US10537194

申请日：2003-12-03

Applicant: Minoru Takashima ,  Masaaki Kohno ,  Katsumi Yamada ,  Masaki Kawano ,  Kaoru Sato

Inventor： Minoru Takashima ,  Masaaki Kohno ,  Katsumi Yamada ,  Masaki Kawano ,  Kaoru Sato

IPC: H01F1/147

CPC classification number: H01F1/16 ,  C21D8/1272 ,  C22C38/004 ,  C22C38/02 ,  C22C38/06 ,  C22C38/08 ,  C22C38/16

Abstract: When a non-oriented electrical steel sheet is manufactured, simultaneously having superior magnetic properties and high strengths, a composition containing 0.02% or less of C, 4.5% or less of Si, 5.0% or less (including 0) of Ni, and 0.2% to 4.0% of Cu is used, and a solute Cu is allowed to appropriately remain in finish annealing. In the steel sheet thus obtained, finely shaped Cu is precipitated by aging treatment, and while the magnetic properties are not degraded, the yield stress is increased to not less than CYS (MPa) represented by the following formula: note CYS=180+5,600[% C]+95[% Si]+50[% Mn]+37[% Al]+435[% P]+25[% Ni]+22d−1/2 where d is an average grain diameter (mm) of crystal grains.

Abstract translation: 当制造同时具有优异的磁特性和高强度的无取向电工钢板时，含有C：0.02％以下，Si：4.5％以下，5.0％以下（含0）Ni，0.2 使用％〜4.0％的Cu，使溶质Cu适当地保持在最终退火中。 在这样得到的钢板中，通过时效处理使细小的Cu析出，而在磁特性不降低的同时，屈服应力提高至不低于下式表示的CYS（MPa）：< 公式description =“In-line Formulas”end =“lead”？> note <？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In CYC = 180 + 5600 [％C] +95 [％Si] +50 [％Mn] +37 [％Al] +435 [％P] +25 [％Ni] + 22d-1/2 <？in-line-formula description =“In-line Formulas”end =“tail”？>其中d是晶粒的平均粒径（mm）。

公开(公告)号：US5942051A

公开(公告)日：1999-08-24

申请号：US938544

申请日：1997-09-26

Applicant: Minoru Takashima ,  Keiji Sato ,  Takashi Obara

Inventor： Minoru Takashima ,  Keiji Sato ,  Takashi Obara

IPC: C21D1/30 ,  C21D8/12 ,  C22C38/04 ,  C22C38/06 ,  H01F1/147 ,  H01F41/02 ,  H02K1/02

CPC classification number: H01F41/0213 ,  C21D8/1244 ,  C22C38/04 ,  C22C38/06 ,  H01F1/14775 ,  H02K1/02 ,  C21D1/30 ,  Y10T29/49009 ,  Y10T29/4902 ,  Y10T29/49078

Abstract: In a non-oriented electromagnetic steel sheet including about 0.01 wt % or less of C, about 1.0 wt % or less of Si, Mn in a range of about 0.1 wt % to 1.5 wt %, Al in a range of about 0.2 wt % to 1.5 wt %; the steel sheet having a critical amount of about 2 to 80 ppm rare earth metal, and the quantities of Ti and Zr in the steel sheet being limited to about 15 ppm or less of Ti, and about 80 ppm or less of Zr. The sheet exhibits excellent magnetic characteristics, such as iron loss, even when punched and laminated sheets are stress relief annealed at a low temperature for a short period of time.

Abstract translation: 在包含约0.01重量％以下的C，约1.0重量％以下的Si，Mn在约0.1重量％〜1.5重量％的范围内的非取向电磁钢板中，Al在约0.2重量％ 至1.5重量％; 临界量为约2〜80ppm稀土金属的钢板，钢板中的Ti和Zr的量限制在约15ppm以下的Ti和约80ppm以下的Zr。 即使冲压和层压片材在短时间内在低温下进行应力消除退火，该片材也显示出优异的磁特性，例如铁损。