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1. 发明授权

US06425962B1 Non-oriented electrical steel sheet excellent in permeability and method of producing the same 有权
标题翻译：渗透性优异的无取向电工钢板及其制造方法
公开(公告)号：US06425962B1
公开(公告)日：2002-07-30
申请号：US09548699
申请日：2000-04-13
申请人： Ryutaro Kawamata , Yoshihiro Arita , Shinichi Kanao , Kazufumi Hanzawa , Takeshi Kubota , Kenichi Murakami
发明人： Ryutaro Kawamata , Yoshihiro Arita , Shinichi Kanao , Kazufumi Hanzawa , Takeshi Kubota , Kenichi Murakami
IPC分类号： H01F1147
CPC分类号： C21D8/1222 , C21D8/1233 , C21D8/1272 , H01F1/14766 , H01F1/14775
摘要： A non-oriented electrical steel sheet excellent in permeability whose steel contains, in percentage by weight, 0.1%≦Si≦1.0%, 0.1%≦Mn≦0.8%, 0.1%≦Al≦1.0% and the balance of Fe and unavoidable impurities, and which has an ay transformation, an electrical resistivity of not less than 10×10−8 &OHgr;m and not greater than 32×10−8 &OHgr;m and a permeability &mgr;{fraction (15/60)} of not less than 1500 (Gauss/Oe); and a method of producing the same.
摘要翻译：钢的渗透性优异的无方向性电磁钢板，以重量％计含有0.1％<= Si <= 1.0％，0.1％<= Mn <= 0.8％，0.1％<= Al <= 1.0％ Fe和不可避免的杂质的平衡，并且具有不少于10重量％的转化，电阻率不小于10×10 -8欧姆和不大于32×10 -8欧姆，渗透率μ（分数（15/60）}不小于1500 （高斯/ Oe）; 及其制造方法。

2. 发明授权

US06478892B2 Low iron loss non-oriented electrical steel sheet excellent in workability and method for producing the same 有权
标题翻译：作业性优良的低铁损无取向电工钢板及其制造方法
公开(公告)号：US06478892B2
公开(公告)日：2002-11-12
申请号：US09827968
申请日：2001-04-06
申请人： Ken-ichi Murakami , Takashi Morohoshi , Tomoji Kumano , Ryutaro Kawamata , Takeshi Kubota , Masafumi Zeze , Hidekuni Murakami , Shinichi Kanao
发明人： Ken-ichi Murakami , Takashi Morohoshi , Tomoji Kumano , Ryutaro Kawamata , Takeshi Kubota , Masafumi Zeze , Hidekuni Murakami , Shinichi Kanao
IPC分类号： H01F104
CPC分类号： C21D8/12 , C21D8/1261 , C21D8/1272
摘要： The present invention provides a non-oriented electrical steel sheet having crystal grains of small diameter and excellent workability before stress relief annealing and having crystal grains of largely grown diameter and excellent iron loss property after stress relief annealing and a method for producing the same, and relates to a low iron loss non-oriented electrical steel sheet excellent in workability, containing, in weight %, 0.010% or less of C, 0.1 to 1.5% of Mn, 0.1 to 4% of Si, 0.1 to 4% of Al, wherein the latter three elements satisfy the formula Si+Mn+Al≦5.0%, and 0.0005 to 0.0200% of Mg, or further containing 0.005% or more of Ca, wherein the total amount of Mg and Ca is 0.0200% or less, or further containing 0.005% or more of REM, wherein the total amount of Mg and REM is 0.0200% or less, or further containing 0.005% or more of Ca and REM, wherein the total amount of Mg, Ca and REM is 0.0200% or less, and containing the remainder consisting of Fe and unavoidable impurities.
摘要翻译：本发明提供一种在应力消除退火之前具有直径小的晶粒和可加工性优异的无取向电工钢板，其具有大直径生长的晶粒和应力消除退火后的优异的铁损性能及其制造方法，涉及加工性优异的低铁损无取向电工钢板，其含量为C：0.010％以下，Mn：0.1〜1.5％，Si：0.1〜4％，Al：0.1〜4％其中后三种元素满足式Si + Mn + Al <= 5.0％，Mg：0.0005〜0.0200％，进一步含有0.005％以上的Ca，其中Mg和Ca的总量为0.0200％以下，或进一步含有0.005％以上的REM，其中Mg和REM的总量为0.0200％以下，或进一步含有0.005％以上的Ca和REM，其中Mg，Ca和REM的总量为0.0200％，或较少，含有余量由Fe和不可避免的impuriti组成 es。

3. 发明授权

US5803989A Process for producing non-oriented electrical steel sheet having high magnetic flux density and low iron loss 失效
标题翻译：具有高磁通密度和低铁损的无方向性电磁钢板的制造方法
公开(公告)号：US5803989A
公开(公告)日：1998-09-08
申请号：US765858
申请日：1996-12-19
申请人： Ryutaro Kawamata , Takeshi Kubota , Tomoji Kumano
发明人： Ryutaro Kawamata , Takeshi Kubota , Tomoji Kumano
IPC分类号： C21D8/12 , H01F1/147
CPC分类号： C21D8/1222 , C21D8/1261 , C21D8/1233 , C21D8/1277
摘要： A process for producing a non-oriented electrical steel sheet, comprising the steps of: hot rolling a non-oriented electrical steel sheet of a steel comprising at least one element selected from the group consisting of Si, Mn, and Al in respective amounts, in terms of by weight, satisfying the requirements 0.10%.ltoreq.Si.ltoreq.2.50%, 0.10%.ltoreq.Al.ltoreq.1.00%, 0.10%.ltoreq.Mn.ltoreq.2.00%, and the total amount of Si and Al being (Si+2Al).ltoreq.2.50%, with the balance consisting of Fe and unavoidable impurities, to prepare a hot rolled sheet; either subjecting the hot rolled sheet to single pass rolling to a final sheet thickness followed by finish annealing, or cold rolling the hot rolled sheet and then finish annealing the cold rolled sheet followed by skin pass rolling with a reduction ratio of 2 to 20% to a final sheet thickness, wherein the finishing in the step of finish hot rolling is performed in a temperature region of (Ar.sub.3 +50).degree. C. or above, the strip coiling temperature is in a temperature region of the Ar.sub.1 point or above, and, thereafter, in the coiled state, the strip is self-annealed in such a manner that the coil is held in the temperature range of from (A.sub.1 -50).degree. C. to below {(A.sub.1 +A.sub.3)/2}.degree. C. for 2 min to 3 hr.
摘要翻译： PCT No.PCT / JP95 / 00234 Sec。 371 1996年12月19日第 102（e）日期1996年12月19日PCT提交1995年2月17日PCT公布。公开号WO96 / 00306 日本1996年1月4日一种无取向电工钢板的制造方法，其特征在于，包括以下工序：将含有选自Si，Mn和Si的至少一种元素的钢的无方向性电工钢板进行热轧， Al的含量按重量计，满足0.10％

4. 发明授权

US06743304B2 Non-oriented electrical steel sheet with ultra-high magnetic flux density and production method thereof 有权
标题翻译：具有超高磁通密度的无取向电工钢板及其制造方法
公开(公告)号：US06743304B2
公开(公告)日：2004-06-01
申请号：US10014011
申请日：2001-12-10
申请人： Ryutaro Kawamata , Takeshi Kubota
发明人： Ryutaro Kawamata , Takeshi Kubota
IPC分类号： H01F1147
CPC分类号： C21D8/1272 , C21D8/1222 , C21D8/1233 , C21D8/1277 , C22C38/002 , C22C38/004 , C22C38/04 , C22C38/08 , H01F1/14775
摘要： The present invention provides a non-oriented electrical steel sheet having ultra-high magnetic flux density and low core loss, characterized by: comprising a steel containing, in terms of wt %, Si: 0.4% or less, Ni: 2.0% to 6.0%, and Mn: 0.5% or less, with the balance consisting of Fe and unavoidable impurities; and having B25, the magnetic flux density under the magnetic field strength of 2500 A/m, of 1.70T or higher and B50, the magnetic flux density under the magnetic field strength of 5000 A/m, of 1.80T or higher.
摘要翻译：本发明提供一种具有超高磁通密度和低铁损的无方向性电磁钢板，其特征在于：含有以重量％计，Si：0.4％以下，Ni：2.0％〜6.0％％，Mn：0.5％以下，余量由Fe和不可避免的杂质构成。具有B25，磁场强度为2500A / m，1.70T以上的磁通密度和B50，磁场强度为5000A / m的磁通密度为1.80T以上。

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