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1. 发明授权

US09362032B2 High-strength non-oriented electrical steel sheet 有权
标题翻译：高强度无取向电工钢板
公开(公告)号：US09362032B2
公开(公告)日：2016-06-07
申请号：US14111245
申请日：2012-04-11
申请人： Yoshihiro Arita , Masahiro Fujikura , Hidekuni Murakami
发明人： Yoshihiro Arita , Masahiro Fujikura , Hidekuni Murakami
IPC分类号： C22C38/02 , C22C38/04 , H01F1/01 , C22C38/06 , C22C38/16 , H01F1/16 , C22C38/00 , C21D8/12
CPC分类号： H01F1/01 , C21D8/1222 , C21D8/1233 , C21D8/1261 , C21D8/1272 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , H01F1/16
摘要： A high-strength non-oriented electrical steel sheet contains: in mass %, C: 0.010% or less; Si: not less than 2.0% nor more than 4.0%; Mn: not less than 0.05% nor more than 0.50%; Al: not less than 0.2% nor more than 3.0%; N: 0.005% or less; S: not less than 0.005% nor more than 0.030%; and Cu: not less than 0.5% nor more than 3.0%, a balance being composed of Fe and inevitable impurities. An expression (1) is established where a Mn content is represented as [Mn] and a S content is represented as [S], and not less than 1.0×104 pieces nor more than 1.0×106 pieces of sulfide having a circle-equivalent diameter of not less than 0.1 μm nor more than 1.0 μm are contained per 1 mm2 10≦[Mn]/[S]≦50 (1).
摘要翻译：高强度无取向电工钢板，以质量％计含有C：0.010％以下， Si：不小于2.0％，不大于4.0％; Mn：不小于0.05％，不大于0.50％; Al：不小于0.2％，不大于3.0％; N：0.005％以下; S：不小于0.005％，不大于0.030％; 和Cu：不小于0.5％，不大于3.0％，余量由Fe和不可避免的杂质组成。建立表达式（1），其中Mn含量表示为[Mn]，S含量表示为[S]，并且不小于1.0×10 4个或不大于1.0×10 6个具有圆当量的硫化物每1mm 2 10 [n]; [Mn] / [S]＆nlE; 50（1）中含有不小于0.1μm，不大于1.0μm的直径。

2. 发明申请

US20140030135A1 HIGH-STRENGTH NON-ORIENTED ELECTRICAL STEEL SHEET 有权
标题翻译：高强度非导电电工钢板
公开(公告)号：US20140030135A1
公开(公告)日：2014-01-30
申请号：US14111245
申请日：2012-04-11
申请人： Yoshihiro Arita , Masahiro Fujikura , Hidekuni Murakami
发明人： Yoshihiro Arita , Masahiro Fujikura , Hidekuni Murakami
IPC分类号： H01F1/01
CPC分类号： H01F1/01 , C21D8/1222 , C21D8/1233 , C21D8/1261 , C21D8/1272 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , H01F1/16
摘要： A high-strength non-oriented electrical steel sheet contains: in mass %, C: 0.010% or less; Si: not less than 2.0% nor more than 4.0%; Mn: not less than 0.05% nor more than 0.50%; Al: not less than 0.2% nor more than 3.0%; N: 0.005% or less; S: not less than 0.005% nor more than 0.030%; and Cu: not less than 0.5% nor more than 3.0%, a balance being composed of Fe and inevitable impurities. An expression (1) is established where a Mn content is represented as [Mn] and a S content is represented as [S], and not less than 1.0×104 pieces nor more than 1.0×106 pieces of sulfide having a circle-equivalent diameter of not less than 0.1 μm nor more than 1.0 μm are contained per 1 mm2. 10≦[Mn]/[S]≦50 (1)
摘要翻译：高强度无取向电工钢板，以质量％计含有C：0.010％以下， Si：不小于2.0％，不大于4.0％; Mn：不小于0.05％，不大于0.50％; Al：不小于0.2％，不大于3.0％; N：0.005％以下; S：不小于0.005％，不大于0.030％; 和Cu：不小于0.5％，不大于3.0％，余量由Fe和不可避免的杂质组成。建立表达式（1），其中Mn含量表示为[Mn]，S含量表示为[S]，并且不小于1.0×10 4个或不大于1.0×10 6个具有圆当量的硫化物每1mm 2含有不小于0.1μm，不大于1.0μm的直径。 10 [Mn] / [S] @ 50（1）

3. 发明授权

US08557058B2 High-strength non-oriented electrical steel sheet 有权
标题翻译：高强度无取向电工钢板
公开(公告)号：US08557058B2
公开(公告)日：2013-10-15
申请号：US12309622
申请日：2007-06-15
申请人： Yoshihiro Arita , Hidekuni Murakami , Yutaka Matsumoto , Saori Haranaka , Takeshi Kubota
发明人： Yoshihiro Arita , Hidekuni Murakami , Yutaka Matsumoto , Saori Haranaka , Takeshi Kubota
IPC分类号： H01F3/00 , H01F1/04 , C22C38/00
CPC分类号： C22C38/02 , C21D8/12 , C21D8/1272 , C21D9/46 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , H01F1/14716 , H01F1/14791
摘要： The invention provides a non-oriented electrical steel sheet excellent in yield strength for use as an iron core material for high rpm motors that does not sacrifice yield or productivity in motor core punching or steel sheet production, which non-oriented electrical steel sheet is given a chemical composition of, in mass %, C: 0.01 to 0.05%, Si: 2.0 to 4.0%, Mn: 0.05 to 0.5%, Al: 3.0% or less and Nb: 0.01 to 0.05%, and optionally Ni at a preferable content of more than 0.5% and less than 3.0%, the balance being Fe and unavoidable impurities, Mn and C contents expressed in mass % are made to satisfy Mn≦0.6-10×C, recrystallized portion area fraction is made 50% or greater, yield strength in tensile testing is made 650 MPa or greater, and average-grain diameter viewed in steel sheet cross-section is made 40 μm or less, and electrical steel sheet production is conducted using a hot-rolled sheet whose transition temperature in impact testing is 70° C. or less.
摘要翻译：本发明提供一种用于高转速电机的铁心材料的屈服强度优异的无取向电工钢板，其不牺牲电动机芯冲孔或钢板生产中的产量或生产率，该方向电磁钢板被给予以质量％计含有C：0.01〜0.05％，Si：2.0〜4.0％，Mn：0.05〜0.5％，Al：3.0％以下，Nb：0.01〜0.05％的化学成分，含量超过0.5％且小于3.0％，余量为Fe和不可避免的杂质，以质量％表示的Mn和C含量满足Mn≤0.0〜10-10℃，再结晶部分面积分数为50％以上拉伸试验的屈服强度为650MPa以上，钢板截面的平均粒径为40μm以下，使用冲击转变温度的热轧板进行电工钢板的制造测试为70℃或更低。

4. 发明申请

US20110056592A1 HIGH-STRENGTH NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD OF MANUFACTURING THE SAME 审中-公开
标题翻译：高强度非导电电工钢板及其制造方法
公开(公告)号：US20110056592A1
公开(公告)日：2011-03-10
申请号：US12922772
申请日：2009-04-13
申请人： Yoshihiro Arita , Hidekuni Murakami , Yoshiyuki Ushigami , Takeshi Kubota
发明人： Yoshihiro Arita , Hidekuni Murakami , Yoshiyuki Ushigami , Takeshi Kubota
IPC分类号： C22C38/16 , C21D11/00
CPC分类号： H01F1/16 , C21D8/1222 , C21D8/1272 , C21D2201/05 , C21D2211/004 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , H01F1/147
摘要： A high-strength non-oriented electrical steel sheet contains: by mass %, C: not less than 0.002% nor more than 0.05%; Si: not less than 2.0% nor more than 4.0%; Mn: not less than 0.05% nor more than 1.0%; N: not less than 0.002% nor more than 0.05%; and Cu: not less than 0.5% nor more than 3.0%. An Al content is 3.0% or less, and when a Nb content (%) is set to [Nb], a Zr content (%) is set to [Zr], a Ti content (%) is set to [Ti], a V content (%) is set to [V], a C content (%) is set to [C], and an N content (%) is set to [N], Formula (1) and Formula (2) are satisfied. A balance is composed of Fe and inevitable impurities, a recrystallization area ratio is 50% or more, yield stress at a tensile test is 700 MPa or more, fracture elongation is 10% or more, and an eddy current loss We10/400 (W/kg) satisfies Formula (3) in relation to a sheet thickness t (mm) of the steel sheet. 2.0×10−4≦[Nb]/93+[Zr]/91+[Ti]/48+[V]/51 (1) 1.0×10−3≦[C]/12+[N]/14−([Nb]/93+[Zr]/91+[Ti]/48+[V]/51)≦3.0×10−3 (2) We10/400≦70×t2 (3)
摘要翻译：高强度无取向电工钢板，按质量％计，C：0.002％以上0.05％以下， Si：不小于2.0％，不大于4.0％; Mn：不小于0.05％，不大于1.0％; N：不小于0.002％，不大于0.05％; 和Cu：不小于0.5％，不大于3.0％。 Al含量为3.0％以下，Nb含量（％）为[Nb]时，将Zr含量（％）设定为[Zr]，将Ti含量（％）设定为[Ti] 将V含量（％）设定为[V]，将C含量（％）设定为[C]，将N含量（％）设定为[N]，式（1）和式（2）满意。余量由Fe和不可避免的杂质构成，再结晶面积率为50％以上，拉伸试验时的屈服应力为700MPa以上，断裂伸长率为10％以上，涡流损耗为We10 / 400（W / kg）相对于钢板的板厚t（mm）满足公式（3）。 2.0×10-4＆nlE; [Nb] / 93 + [Zr] / 91 + [Ti] / 48 + [V] / 51（1）1.0×10-3＆nlE; [C] / 12 + [N] （[Nb] / 93 + [Zr] / 91 + [Ti] / 48 + [V] / 51）＆nlE; 3.0×10-3（2）We10 / 400＆

5. 发明申请

US20090301609A1 High-Strength Non-Oriented Electrical Steel Sheet 有权
标题翻译：高强度无取向电工钢板
公开(公告)号：US20090301609A1
公开(公告)日：2009-12-10
申请号：US12309622
申请日：2007-06-15
申请人： Yoshihiro Arita , Hidekuni Murakami , Yutaka Matsumoto , Saori Haranaka , Takeshi Kubota
发明人： Yoshihiro Arita , Hidekuni Murakami , Yutaka Matsumoto , Saori Haranaka , Takeshi Kubota
IPC分类号： C22C38/02
CPC分类号： C22C38/02 , C21D8/12 , C21D8/1272 , C21D9/46 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , H01F1/14716 , H01F1/14791
摘要： The invention provides a non-oriented electrical steel sheet excellent in yield strength for use as an iron core material for high rpm motors that does not sacrifice yield or productivity in motor core punching or steel sheet production, which non-oriented electrical steel sheet is given a chemical composition of, in mass %, C: 0.01 to 0.05%, Si: 2.0 to 4.0%, Mn: 0.05 to 0.5%, Al: 3.0% or less and Nb: 0.01 to 0.05%, and optionally Ni at a preferable content of more than 0.5% and less than 3.0%, the balance being Fe and unavoidable impurities, Mn and C contents expressed in mass % are made to satisfy Mn≦0.6−10×C, recrystallized portion area fraction is made 50% or greater, yield strength in tensile testing is made 650 MPa or greater, and average-grain diameter viewed in steel sheet cross-section is made 40 μm or less, and electrical steel sheet production is conducted using a hot-rolled sheet whose transition temperature in impact testing is 70° C. or less.
摘要翻译：本发明提供一种用于高转速电机的铁心材料的屈服强度优异的无取向电工钢板，其不牺牲电动机芯冲孔或钢板生产中的产量或生产率，该方向电磁钢板被给予以质量％计含有C：0.01〜0.05％，Si：2.0〜4.0％，Mn：0.05〜0.5％，Al：3.0％以下，Nb：0.01〜0.05％的化学成分，含量超过0.5％且小于3.0％，余量为Fe和不可避免的杂质，以质量％表示的Mn和C含量满足Mn <= 0.6-10×C，再结晶部分面积分数为50％以上，拉伸试验的屈服强度为650MPa以上，钢板截面的平均粒径为40μm以下，利用冲击试验中的转变温度的热轧板进行电工钢板的制造为70℃以下。

6. 发明申请

US20130340899A1 STEEL SHEET FOR HOT STAMPING USE, METHOD OF PRODUCTION OF SAME, AND METHOD OF PRODUCTION OF HIGH STRENGTH PART 审中-公开
标题翻译：用于烫印用途的钢板，其生产方法和生产高强度部件的方法
公开(公告)号：US20130340899A1
公开(公告)日：2013-12-26
申请号：US14003881
申请日：2011-03-09
申请人： Kazuhisa Kusumi , Yuji Ogawa , Masayuki Abe , Hidekuni Murakami , Kengo Takeda , Jun Maki
发明人： Kazuhisa Kusumi , Yuji Ogawa , Masayuki Abe , Hidekuni Murakami , Kengo Takeda , Jun Maki
IPC分类号： C22C38/22 , C22C38/32 , C22C38/04 , B21B1/22 , C22C38/06 , C22C38/02 , C22C38/00 , C21D8/00 , C22C38/28 , C22C38/14
CPC分类号： C22C38/02 , B21B1/22 , B21D22/022 , B32B15/013 , C21D6/005 , C21D8/005 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C22C38/001 , C22C38/002 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/24 , C22C38/28 , C22C38/30 , C22C38/32
摘要： The present invention has as its object the provision of steel sheet for hot stamping use which is excellent in part strength after hot stamping and delayed fracture resistance comprised of large C content high strength steel sheet in which effective hydrogen traps are formed in the steel material.The steel sheet of the present invention solves this problem by forming Fe—Mn-based composite oxides in the steel sheet and trapping hydrogen at the interfaces of the composite oxides and matrix steel and in the voids around the composite oxides.Specifically, it provides steel sheet for hot stamping use which is comprised of chemical ingredients which contain, by mass %, C: 0.05 to 0.40%, Si: 0.02% or less, Mn: 0.1 to 3%, S: 0.02% or less, P: 0.03% or less, Al: 0.005% or less, Ti: 0.01% or less, N: 0.01% or less, one or both of Cr and Mo in a total of 0.005 to 1%, and O: 0.003 to 0.03% and which have a balance of Fe and unavoidable impurities and which contains average diameter 0.1 to 15 μm Fe—Mn-based composite oxide particles dispersed in the steel sheet or furthermore has crushed voids around the composite oxide particles, a method of production of the same, and a method of production of a hot stamped high strength part.
摘要翻译：本发明的目的是提供一种热冲压用钢板，其特征在于，在钢材中形成有效的氢气阱的大型C含量高强度钢板的热冲压后具有优异的部分强度和延迟断裂性。本发明的钢板通过在钢板中形成Fe-Mn系复合氧化物并在复合氧化物和基质钢的界面以及复合氧化物周围的空隙中捕获氢来解决这个问题。具体地说，提供热冲压用钢板，其由以质量％计含有C：0.05〜0.40％，Si：0.02％以下，Mn：0.1〜3％，S：0.02％以下的化学成分构成，P：0.03％以下，Al：0.005％以下，Ti：0.01％以下，N：0.01％以下，Cr和Mo中的一种或两种，总计0.005〜1％，O：0.003〜 0.03％，余量由Fe和不可避免的杂质构成，平均直径为0.1〜15μm的Fe-Mn系复合氧化物粒子分散在钢板上，或者还具有复合氧化物粒子周围的破碎空隙。以及生产热冲压高强度部件的方法。

7. 发明授权

US07736449B2 High-strength hot-dip galvanized steel sheet and method for producing the same 有权
标题翻译：高强度热浸镀锌钢板及其制造方法
公开(公告)号：US07736449B2
公开(公告)日：2010-06-15
申请号：US11977537
申请日：2007-10-24
申请人： Yoshihisa Takada , Masayoshi Suehiro , Masao Kurosaki , Hidekuni Murakami , Hiroyasu Fujii , Haruhiko Eguchi , Hisaaki Sato
发明人： Yoshihisa Takada , Masayoshi Suehiro , Masao Kurosaki , Hidekuni Murakami , Hiroyasu Fujii , Haruhiko Eguchi , Hisaaki Sato
IPC分类号： C23C2/28
CPC分类号： C22C38/02 , C21D1/185 , C21D1/74 , C21D8/0273 , C21D8/0278 , C21D9/46 , C22C38/008 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/16 , C23C2/02 , C23C2/40 , Y10T29/301 , Y10T428/12799 , Y10T428/12951
摘要： The present invention stably provides a high-strength hot-dip galvanized steel sheet having a high tensile strength and no non-plated portions and being excellent in workability and surface properties even when the employed equipment has only a reduction annealing furnace and a steel sheet containing relatively large amounts of Si, Mn and Al that are regarded as likely to cause non-plated portions is used as the substrate. The present invention: secures good plating performance even when the steel sheet contains Si, Mn and Al by adding Ni to a steel sheet, thus forming oxides at some portions in the steel sheet surface layer, and resultantly suppressing the surface incrassation of Si, Mn and Al at the portions where oxides are not formed; enhances the effect of Ni and accelerates the formation of oxides by further adding Mo, Cu and Sn; and moreover, in the case of a TRIP steel sheet, secures austenite by determining the ranges of Si and Al strictly, avoiding the deterioration of plating performance caused by the addition of Ni, and further adding Mo in a balanced manner.In addition, the present invention, in a TRIP steel sheet, improves press formability by regulating a retained austenite ratio and accelerates the formation of oxides by regulating a hydrogen concentration and a dew point in annealing before plating.
摘要翻译：本发明稳定地提供了具有高拉伸强度和无镀层部分的高强度热浸镀锌钢板，并且即使所用设备仅具有还原退火炉和含有被认为可能引起非电镀部分的相对大量的Si，Mn和Al被用作衬底。本发明：即使在钢板中含有Si，Mn和Al的钢板中也添加了Ni，从而在钢板表面层的某些部分形成氧化物，也可以确保良好的镀层性，从而抑制Si，Mn 和Al在不形成氧化物的部分; 通过进一步添加Mo，Cu和Sn，增强Ni的作用并加速氧化物的形成; 此外，在TRIP钢板的情况下，通过严格地确定Si和Al的范围来确保奥氏体，避免由于添加Ni而引起的电镀性能的劣化，并且进一步以平衡的方式添加Mo。此外，本发明在TRIP钢板中，通过调节残留奥氏体比例，通过调节镀层前退火时的氢浓度和露点来促进氧化物的形成，提高冲压成形性。

8. 发明申请

US20060124907A1 High-strength hop-dip galvanized steel sheet and method for producing the same 有权
标题翻译：高强度浸镀锌钢板及其制造方法
公开(公告)号：US20060124907A1
公开(公告)日：2006-06-15
申请号：US10542393
申请日：2004-01-15
申请人： Yoshihisa Takada , Masayoshi Suehiro , Masao Kurosaki , Hidekuni Murakami , Hiroyasu Fujii , Haruhiko Eguchi , Hisaaki Sato
发明人： Yoshihisa Takada , Masayoshi Suehiro , Masao Kurosaki , Hidekuni Murakami , Hiroyasu Fujii , Haruhiko Eguchi , Hisaaki Sato
IPC分类号： H01B1/12
CPC分类号： C22C38/02 , C21D1/185 , C21D1/74 , C21D8/0273 , C21D8/0278 , C21D9/46 , C22C38/008 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/16 , C23C2/02 , C23C2/40 , Y10T29/301 , Y10T428/12799 , Y10T428/12951
摘要： The present invention stably provides a high-strength hot-dip galvanized steel sheet having a high tensile strength and no non-plated portions and being excellent in workability and surface properties even when the employed equipment has only a reduction annealing furnace and a steel sheet containing relatively large amounts of Si, Mn and Al that are regarded as likely to cause non-plated portions is used as the substrate. The present invention: secures good plating performance even when the steel sheet contains Si, Mn and Al by adding Ni to a steel sheet, thus forming oxides at some portions in the steel sheet surface layer, and resultantly suppressing the surface incrassation of Si, Mn and Al at the portions where oxides are not formed; enhances the effect of Ni and accelerates the formation of oxides by further adding Mo, Cu and Sn; and moreover, in the case of a TRIP steel sheet, secures austenite by determining the ranges of Si and Al strictly, avoiding the deterioration of plating performance caused by the addition of Ni, and further adding Mo in a balanced manner. In addition, the present invention, in a TRIP steel sheet, improves press formability by regulating a retained austenite ratio and accelerates the formation of oxides by regulating a hydrogen concentration and a dew point in annealing before plating.
摘要翻译：本发明稳定地提供了具有高拉伸强度和无镀层部分的高强度热浸镀锌钢板，并且即使所用设备仅具有还原退火炉和含有被认为可能引起非电镀部分的相对大量的Si，Mn和Al被用作衬底。本发明：即使在钢板中含有Si，Mn和Al的钢板中也添加了Ni，从而在钢板表面层的某些部分形成氧化物，也可以确保良好的镀层性，从而抑制Si，Mn 和Al在不形成氧化物的部分; 通过进一步添加Mo，Cu和Sn，增强Ni的作用并加速氧化物的形成; 此外，在TRIP钢板的情况下，通过严格地确定Si和Al的范围来确保奥氏体，避免由于添加Ni而引起的电镀性能的劣化，并且进一步以平衡的方式添加Mo。此外，本发明在TRIP钢板中，通过调节残留奥氏体比例，通过调节镀层前退火时的氢浓度和露点来促进氧化物的形成，提高冲压成形性。

9. 发明申请

US20120067469A1 VERY THIN STEEL SHEET AND PRODUCTION METHOD THEREOF 有权
标题翻译：非常薄的钢板及其生产方法
公开(公告)号：US20120067469A1
公开(公告)日：2012-03-22
申请号：US13321108
申请日：2010-05-17
申请人： Hidekuni Murakami , Seiichi Tanaka , Keiichiroh Torisu , Akihiro Jinno
发明人： Hidekuni Murakami , Seiichi Tanaka , Keiichiroh Torisu , Akihiro Jinno
IPC分类号： C21D8/02 , C22C38/00 , C22C38/14 , C22C38/06 , C22C38/12 , C22C38/02 , C22C38/04
CPC分类号： C21D9/46 , C21D9/56 , C21D2201/03 , C21D2211/004 , C22C38/001 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14
摘要： The present invention provides a very thin steel sheet and production method thereof that, in a very thin steel sheet of 0.4 mm or less thickness, enable production at low addition of special elements, simultaneous achievement of both good workability and anti-aging property, and stable passing of even wide coil in a continuous annealing process, which very thin steel sheet and production method.
摘要翻译：本发明提供一种非常薄的钢板及其制造方法，其特征在于，在厚度为0.4mm以下的非常薄的钢板中，能够以低添加量的特殊元素生产，同时实现良好的加工性和抗老化性，连续退火工艺中均匀的线圈稳定通过，这种非常薄的钢板和生产方法。

10. 发明授权

US08097094B2 High-strength electrical steel sheet and processed part of same 有权
标题翻译：高强度电工钢板及其加工部分相同
公开(公告)号：US08097094B2
公开(公告)日：2012-01-17
申请号：US10574553
申请日：2004-10-06
申请人： Hidekuni Murakami
发明人： Hidekuni Murakami
IPC分类号： H01F1/147
CPC分类号： C22C38/004 , C21D8/1244 , C22C38/02 , C22C38/04 , C22C38/16 , H01F1/14775
摘要： The present invention has as its object to stably produce a high strength electrical steel sheet and a processed part of the same which is high in strength and has wear resistant and is superior in magnetic flux density and core loss without greatly changing the cold rollability and production processes from those of conventional electrical steel sheet and provides a high strength electrical steel sheet characterized by containing, by mass %, C: 0.06% or less, Si: 0.2 to 6.5%, Mn: 0.05 to 3.0%, P: 0.30% or less, S or Se: 0.040% or less, Al: 2.50% or less, Cu: 0.6 to 8.0%, N: 0.0400% or less, and a balance of Fe and unavoidable impurities and containing in the steel a metal phase composed of Cu of a size of 0.1 μm or less. The method of production of the same comprises holding in a temperature range of 300° C. to 720° C. for 5 seconds or more for heat treatment.
摘要翻译：本发明的目的是稳定地制造强度高且耐磨的高强度电磁钢板及其加工部件，并且磁通密度和磁芯损耗优异，而不会极大地改变冷轧性和生产性工序，提供一种高强度电工钢板，其特征在于以质量％计含有C：0.06％以下的Si：0.2〜6.5％，Mn：0.05〜3.0％，P：0.30％或少于S或Se：0.040％以下，Al：2.50％以下，Cu：0.6〜8.0％，N：0.0400％以下，余量由Fe和不可避免的杂质构成，在钢中含有由 Cu的尺寸为0.1μm以下。其制造方法包括在300℃〜720℃的温度范围内保持5秒以上进行热处理。

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