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    LOW-CORE-LOSS GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING SAME
    14.
    发明公开
    LOW-CORE-LOSS GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING SAME 审中-公开
    KORNORIENTIERTES ELEKTROMAGNETISCHES STAHLBLECH MIT GERINGEM KERNVERLUST UND VERFAHREN ZUR HERSTELLUNG DAVON

    公开(公告)号：EP3205738A4

    公开(公告)日：2017-08-30

    申请号：EP15848835

    申请日：2015-10-05

    申请人： JFE STEEL CORP

    发明人： SUEHIRO RYUICHI ,  TERASHIMA TAKASHI ,  TAKAMIYA TOSHITO ,  WATANABE MAKOTO ,  UESAKA MASANORI

    IPC分类号： C22C38/00 ,  C21D8/12 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/60 ,  H01F1/147 ,  H01F1/16

    CPC分类号： C21D9/46 ,  C21D8/005 ,  C21D8/1261 ,  C21D8/1272 ,  C21D8/1288 ,  C21D8/1294 ,  C21D2201/05 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/16 ,  C22C38/54 ,  C22C38/60 ,  H01F1/14775 ,  H01F1/16

    摘要： In the manufacture of a grain oriented electrical steel sheet by subjecting an Si-containing steel slab to hot rolling, cold rolling, primary recrystallization annealing, finish annealing and formation of a tension coating, the sheet is subjected to a temperature holding treatment at a temperature T within a range of 250-600°C for 1-10 seconds in a heating process of the primary recrystallization annealing and then heated from the temperature T to 700°C at a rate of not less than 80°C/s and from 700°C to a soaking temperature at a rate of not more than 15°C/s, wherein an oxygen potential from 700°C to the soaking temperature is 0.2-0.4 and an oxygen potential during the soaking is 0.3-0.5 and an area ratio of secondary recrystallized grains is not less than 90% when an angle ± deviated from {110} ideal orientation is less than 6.5° and an area ratio is not less than 75% when a deviation angle P is less than 2.5° and an average length [L] in the rolling direction is not more than 20 mm and an average value [²] of the angle P (°) is 15.63 x [²] + [L]

    摘要翻译： 在通过对含Si钢坯进行热轧，冷轧，一次再结晶退火，最终退火和形成拉伸涂层来制造取向性电磁钢板时，将该钢板在一定温度下进行保温处理 T在250〜600℃的范围内进行1〜10秒钟的热处理，然后以80℃/秒以上的温度从温度T升温至700℃，从700℃ ℃至均热温度以不超过15℃/ s的速率进行，其中700℃至均热温度的氧势为0.2-0.4，并且在均热过程中氧势为0.3-0.5，面积比 当偏离角P小于2.5°时，从{110} <001>理想取向的偏离角±小于6.5°，面积比不小于75％时，二次再结晶晶粒的比例不小于90％; 轧制方向的平均长度[L]不是mo 大于20mm，并且角度P（°）的平均值[²]为15.63×[²] + [L] <44.06，由此获得具有良好铁损特性的取向性电磁钢板。

    ORIENTED ELECTROMAGNETIC STEEL PLATE PRODUCTION METHOD
    15.
    发明公开
    ORIENTED ELECTROMAGNETIC STEEL PLATE PRODUCTION METHOD 审中-公开
    VERFAHREN ZUR HERSTELLUNG EINER ORIENTIERTEN ELEKTROMAGNETISCHEN STAHLPLATTE

    公开(公告)号：EP2584054A4

    公开(公告)日：2017-06-14

    申请号：EP11795427

    申请日：2011-06-17

    申请人： JFE STEEL CORP

    发明人： TAKENAKA MASANORI ,  TAKASHIMA MINORU ,  TAKAMIYA TOSHITO

    IPC分类号： C21D8/12 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/60 ,  H01F1/16

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

    摘要： 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.

    摘要翻译： 本发明提供了一种制造方向性电磁钢板的方法，该方法包括制备具有预定组成并进行至少两次冷轧操作的钢坯作为材料，其特征在于进行热处理， 在最终冷轧以外的其中一种冷轧操作中，在500℃至750℃的温度范围内进行10分钟至480小时。 本发明的方向性电磁钢板通过利用二次再结晶后的奥氏体 - 铁素体相变优异的磁特性而发挥出来。

    GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING SAME
    17.
    发明授权
    GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING SAME 有权
    晶粒取向电工钢板及其制造方法

    公开(公告)号：EP2796583B1

    公开(公告)日：2017-03-29

    申请号：EP12860627.4

    申请日：2012-12-21

    申请人： JFE Steel Corporation

    发明人： TAKAJO, Shigehiro ,  OKABE, Seiji

    IPC分类号： C22C38/00 ,  C21D8/12 ,  H01F1/16

    CPC分类号： H01F1/16 ,  C21D1/34 ,  C21D1/38 ,  C21D8/12 ,  C21D8/1244 ,  C21D8/1294 ,  C21D2201/05 ,  C22C38/00

    摘要： Disclosed is a grain-oriented electrical steel sheet exhibiting low hysteresis loss and low coercive force, in which an increase in hysteresis loss due to laser irradiation or electron beam irradiation, which has been a conventional concern, is effectively inhibited. The grain-oriented electrical steel sheet has closure domain regions ( X ) formed to divide the magnetic domains in a rolling direction, from one end to the other in the width direction of the steel sheet, provided that Expression (1) is satisfied: - 500 �¢ t - 80 × s + 230 ‰¤ w ‰¤ - 500 �¢ t - 80 × s + 330 , where t represents a sheet thickness (mm); w represents a smaller one of the widths (µm) of the regions measured on the front and rear surfaces of the steel sheet, respectively, by using a Bitter method; and s represents an average number of the regions present within one crystal grain.