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    Method of manufacturing grain-oriented electrical steel sheets
    1.
    发明授权
    Method of manufacturing grain-oriented electrical steel sheets 有权
    晶粒取向电工钢板的制造方法

    公开(公告)号：US06811619B2

    公开(公告)日：2004-11-02

    申请号：US10202117

    申请日：2002-07-23

    申请人： Yasuyuki Hayakawa ,  Hideo Yamagami ,  Seiji Okabe ,  Takeshi Imamura ,  Minoru Takashima ,  Mitsumasa Kurosawa

    发明人： Yasuyuki Hayakawa ,  Hideo Yamagami ,  Seiji Okabe ,  Takeshi Imamura ,  Minoru Takashima ,  Mitsumasa Kurosawa

    IPC分类号： H01F116

    CPC分类号： C22C38/60 ,  C21D8/1233 ,  C21D8/125 ,  C21D8/1255 ,  C21D8/1272 ,  C21D8/1283 ,  C22C38/004 ,  C22C38/02

    摘要： A method of manufacturing a grain-oriented steel sheet including hot-rolling a slab prepared using molten steel containing, by mass %, C of not more than about 0.08%, Si of about 2.0 to about 8.0% and Mn of about 0.005 to about 3.0%; optionally annealing the hot-rolled steel sheet; performing cold rolling once, or twice or more with intermediate annealing therebetween; performing primary recrystallization annealing in a low- or non-oxidizative atmosphere and adjusting the C content in the steel sheet after primary recrystallization annealing to be held in the range of about 0.005 to about 0.025 mass %; performing secondary recrystallization annealing; decarburization annealing; and, preferably, performing additional high-temperature continuous or batch annealing. A grain-oriented electrical steel sheet having a sufficiently high magnetic flux density and a low iron loss can be advantageously obtained even when it is manufactured without using an inhibitor.

    摘要翻译： 一种制造含有热轧钢板的方法，该方法包括以质量％计含有不大于约0.08％的Si，约2.0至约8.0％的Si和约0.005至约 3.0％; 任选地退火热轧钢板; 在其间进行中间退火，进行一次或两次以上的冷轧; 在低或非氧化性气氛中进行一次再结晶退火，并将一次再结晶退火后的钢板中的C含量调整为约0.005〜约0.025质量％的范围; 进行二次再结晶退火; 脱碳退火; 并且优选进行附加的高温连续或间歇退火。 即使在不使用抑制剂的情况下制造也可以有利地获得具有足够高的磁通密度和低铁损的晶粒取向电工钢板。

    Electrical steel sheet suitable for compact iron core and manufacturing method therefor
    3.
    发明授权
    Electrical steel sheet suitable for compact iron core and manufacturing method therefor 失效
    适用于紧凑型铁芯的电工钢板及其制造方法

    公开(公告)号：US06562473B1

    公开(公告)日：2003-05-13

    申请号：US09722017

    申请日：2000-11-27

    申请人： Seiji Okabe ,  Yasuyuki Hayakawa ,  Takeshi Imamura ,  Mitsumasa Kurosawa

    发明人： Seiji Okabe ,  Yasuyuki Hayakawa ,  Takeshi Imamura ,  Mitsumasa Kurosawa

    IPC分类号： B32B1504

    CPC分类号： C21D8/12 ,  C21D8/1227 ,  C21D8/1233 ,  C21D8/1261 ,  C21D8/1272 ,  H01F1/14775 ,  Y10S428/90 ,  Y10S428/928

    摘要： Electrical steel sheets having superior magnetic properties, anti-noise properties, and workability, are ideal for use a compact iron core material in electric apparatuses, such as compact transformers, motors, and electric generators. A totally new electrical steel sheet and a manufacturing method therefor are proposed, in which the electrical steel sheet is not only most advantageous in magnetic properties but also advantageous from economic point of view. That is, the electrical steel sheet of the present invention is composed of from about 2.0 to 8.0 wt % Si, from about 0.005 to 3.0 wt % Mn, from about 0.0010 to 0.020 wt % Al, balance essentially iron. The magnetic flux density B50(L) in a rolling direction and the magnetic flux density B50(C) in the direction perpendicular thereto are 1.70 T or more, and the B50(L)/B50(C) is 1.005 to 1.100. In addition, the secondary recrystallized grains inclined by 20′ or less with respect to the {100} orientation are present in the steel sheet at an areal ratio of 50 to 80%, and secondary recrystallized grains inclined by 20° or less with respect to the {110} orientation are present in the steel sheet at an areal ratio of 6 to 20%.

    摘要翻译： 具有优异的磁特性，抗噪声性能和可加工性的电工钢板，在紧凑型变压器，电动机和发电机等电气设备中使用紧凑的铁芯材料是理想的。 提出了一种全新的电工钢板及其制造方法，其中电磁钢板不仅在磁性方面最有利，而且从经济的观点出发也是有利的。 也就是说，本发明的电工钢板由约2.0〜8.0重量％的Si，约0.005〜3.0重量％的Mn，约0.0010〜0.020重量％的Al，余量基本上由铁构成。 轧制方向的磁通密度B50（L）和与其垂直的方向的磁通密度B50（C）为1.70T以上，B50（L）/ B50（℃）为1.005〜1.100。 此外，相对于{100} <001>取向倾斜20°以下的二次再结晶晶粒以50〜80％的面积比存在，并且二次再结晶晶粒倾斜20°以下 相对于{110} <001>取向，以6〜20％的面积比存在于钢板中。

    Method of making grain-oriented magnetic steel sheet having low iron loss
    6.
    发明授权
    Method of making grain-oriented magnetic steel sheet having low iron loss 有权
    具有低铁损的晶粒取向电磁钢板的制造方法

    公开(公告)号：US06423157B2

    公开(公告)日：2002-07-23

    申请号：US09800050

    申请日：2001-03-05

    申请人： Yasuyuki Hayakawa ,  Mitsumasa Kurosawa ,  Michiro Komatsubara

    发明人： Yasuyuki Hayakawa ,  Mitsumasa Kurosawa ,  Michiro Komatsubara

    IPC分类号： H01F1147

    CPC分类号： C21D8/12 ,  C21D8/1272 ,  C21D2281/02 ,  C22C38/02 ,  C22C38/08 ,  C22C38/60

    摘要： Grain-oriented magnetic steel sheet made by the method comprising of hot rolling and final finish annealing, wherein (1) the O content in the steel slab is limited to up to about 30 wtppm; (2) for the entire steel sheet including an oxide film before final finish annealing, from among impurities, the Al content is limited to up to about 100 wtppm, and the contents of B, V, Nb, Se, S, and N, to up to about 50 wtppm; and (3) during final finish annealing, the N content in the steel is, at least in the temperature region of from about 850 to 950° C., limited within the range of from about 6 to 80 wtppm.

    摘要翻译： 通过热轧和最终成品退火的方法制造的晶粒取向电磁钢板，其中（1）钢坯中的O含量限制在约30重量ppm以下;（2）对于包含氧化物的整个钢板 最终成品退火之前的膜，从杂质中，将Al含量限制在高达约100重量ppm，B，V，Nb，Se，S和N的含量高达约50重量ppm; 和（3）在最终成品退火期间，钢中的N含量至少在约850〜950℃的温度范围内，限制在约6〜80重量ppm的范围内。

    Process for producing grain oriented silicon steel sheets having excellent magnetic properties
    8.
    发明授权
    Process for producing grain oriented silicon steel sheets having excellent magnetic properties 失效
    生产具有优异磁性的粒状硅钢片的制造方法

    公开(公告)号：US5181972A

    公开(公告)日：1993-01-26

    申请号：US635511

    申请日：1991-01-09

    申请人： Michiro Komatsubara ,  Mitsumasa Kurosawa ,  Yasuyuki Hayakawa ,  Yoshiaki Iida ,  Toshio Sadayori

    发明人： Michiro Komatsubara ,  Mitsumasa Kurosawa ,  Yasuyuki Hayakawa ,  Yoshiaki Iida ,  Toshio Sadayori

    IPC分类号： C21D8/12

    CPC分类号： C21D8/1233 ,  C21D8/1227 ,  C21D8/125

    摘要： The present invention realizes the stable production of grain oriented silicon steel sheets having excellent magnetic properties under high productivity through effectively combining aging treatment with tandem rolling, in which cold rolling is effected until a final thickness is attained. In the final cold rolling step of the production of the grain oriented silicon steel sheets, the tandem rolling is first effected, and then continuous heat treatment is effected, preferably under application of tension.

    摘要翻译： PCT No.PCT / JP90 / 00609 Sec。 371日期1991年1月9日 102（e）日期1991年1月9日PCT提交1990年5月15日PCT公布。 出版物WO90 / 14445 日本1990年11月29日。本发明通过有效地将时效处理与串列轧制有机结合，实现了在高生产率下具有优异磁性能的晶粒取向硅钢板的稳定生产，其中进行冷轧直到达到最终厚度。 在制造晶粒取向硅钢板的最终冷轧步骤中，首先进行串联轧制，然后优选在施加张力下进行连续热处理。

    Method of making grain-oriented magnetic steel sheet having low iron loss
    9.
    再颁专利
    Method of making grain-oriented magnetic steel sheet having low iron loss 有权
    具有低铁损的晶粒取向电磁钢板的制造方法

    公开(公告)号：USRE39482E1

    公开(公告)日：2007-02-06

    申请号：US10263573

    申请日：2002-10-03

    申请人： Yasuyuki Hayakawa ,  Mitsumasa Kurosawa ,  Michiro Komatsubara

    发明人： Yasuyuki Hayakawa ,  Mitsumasa Kurosawa ,  Michiro Komatsubara

    IPC分类号： H01F1/147

    CPC分类号： C21D8/12 ,  C21D8/1272 ,  C21D2281/02 ,  C22C38/02 ,  C22C38/08 ,  C22C38/60

    摘要： Grain-oriented magnetic steel sheet made by the method-including hot rolling and final finish annealing, wherein (1) the O content in the steel slab is limited to up to about 30 ppm; (2) for the entire steel sheet having final thickness including an oxide film before final finish annealing, from among impurities, the Al content is limited to up to about 100 wtppm, and the respective contents of B, V, Nb, Se, S, P, and N, to up to about 50 wtppm each; and (3) during final finish annealing, the N content in the steel is, at least in the temperature region of from about 850 to 950° C., limited within the range of from about 6 to 80 wtppm.

    摘要翻译： 通过包括热轧和最终成品退火的方法制成的晶粒取向电磁钢板，其中（1）钢坯中的O含量限制在高达约30ppm; （2）对于在最终成品退火前具有氧化膜的最终厚度的整个钢板，从杂质中，Al含量被限制为高达约100重量ppm，并且各自的含量B，V，Nb，Se，S ，<？delete-start id =“DEL-S-00001”date =“20070206”？> P，<？delete-end id =“DEL-S-00001”？>和N，每个高达约50 wtppm ; 和（3）在最终成品退火期间，钢中的N含量至少在约850〜950℃的温度范围内，限制在约6〜80重量ppm的范围内。

    Non-oriented magnetic steel sheet having low iron loss and high magnetic flux density and manufacturing method therefor
    10.
    发明授权
    Non-oriented magnetic steel sheet having low iron loss and high magnetic flux density and manufacturing method therefor 有权
    铁损低，磁通密度高的非取向磁钢板及其制造方法

    公开(公告)号：US06531001B2

    公开(公告)日：2003-03-11

    申请号：US10140207

    申请日：2002-05-08

    申请人： Yasuyuki Hayakawa ,  Mitsumasa Kurosawa ,  Masaki Kawano ,  Michiro Komatsubara ,  Yuka Komori ,  Kazuaki Tamura

    发明人： Yasuyuki Hayakawa ,  Mitsumasa Kurosawa ,  Masaki Kawano ,  Michiro Komatsubara ,  Yuka Komori ,  Kazuaki Tamura

    IPC分类号： H01F1147

    CPC分类号： C21D8/1261 ,  C21D8/1233 ,  H01F1/14775

    摘要： Non-oriented magnetic steel sheets, which are mainly used as materials for iron cores for use in electric apparatuses, have a low iron loss and a high magnetic flux density at the same time. The non-oriented magnetic steel sheet comprises from about 1.5 to about 8.0 weight % Si, from about 0.005 to about 2.50 weight % Mn, and not more than about 50 ppm each of C, S, N, O, and B, in which a crystal orientation parameter is 0.200 or less. In addition, the average crystal grain diameter is preferably from about 50 to about 500 &mgr;m, and an areal ratio of crystal grains on a surface of the steel sheet is preferably 20% and less, in which crystal plane orientations of the crystal grains are within 15° from the axis. In addition, the non-oriented magnetic steel sheet preferably contains small amounts of elements such as Al, Sb, Ni, Sn, Cu, P, and Cr. The manufacturing method for the non-oriented magnetic steel is also described.

    摘要翻译： 主要用作电气设备用铁芯材料的非取向磁钢板同时具有低铁损和高磁通密度。 未取向的磁性钢板包含约1.5至约8.0重量％的Si，约0.005至约2.50重量％的Mn，以及不超过约50ppm的C，S，N，O和B，其中 晶体取向参数为0.200以下。 此外，平均晶粒直径优选为约50〜约500μm，并且钢板表面的晶粒的面积率优选为20％以下，其中晶粒的晶面取向在其内 距离<111>轴为15°。 此外，无取向电磁钢板优选含有少量的元素，例如Al，Sb，Ni，Sn，Cu，P和Cr。 还描述了用于非取向磁钢的制造方法。