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    ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING SAME
    3.
    发明公开
    ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING SAME 有权
    ORIENTIERTES ELEKTROMAGNETISCHES STAHLBLECH SOWIE VERFAHREN ZU SEINER HERSTELLUNG

    公开(公告)号：EP2770075A1

    公开(公告)日：2014-08-27

    申请号：EP12841595.7

    申请日：2012-10-16

    申请人： JFE Steel Corporation

    发明人： WATANABE, Makoto ,  SHINGAKI, Yukihiro ,  TAKAMIYA, Toshito ,  OKUBO, Tomoyuki

    IPC分类号： C22C38/00 ,  C21D8/12 ,  C22C38/04 ,  C22C38/60 ,  H01F1/16

    CPC分类号： H01F1/14775 ,  C21D8/0263 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1272 ,  C21D9/46 ,  C22C38/001 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/34 ,  C22C38/60 ,  C23C22/33 ,  C23C22/74 ,  H01F1/16

    摘要： In a method of producing a grain-oriented electrical steel sheet by hot rolling a steel slab comprising C: 0.001∼0.10 mass%, Si: 1.0∼5.0 mass%, Mn: 0.01∼1.0 mass%, one or two of S and Se: 0.01∼0.05 mass% in total, sol. Al: 0.003∼0.050 mass% and N: 0.001∼0.020 mass%, cold rolling, subjecting to primary recrystallization annealing, applying an annealing separator and finally subjecting to final annealing, the primary recrystallization annealing is conducted so as to control a heating rate S 1 between 500 and 600°C to not less than 100°C/s and a heating rate S2 between 600 and 700°C to not less than 30°C/s but not more than 0.6 x S1, and as a main ingredient of the annealing separator is used MgO having an expected value µ(A) of citric acid activity distribution of 3.5∼3.8, a cumulative frequency F of 25∼45% when an activity A is not less than 4.0, whereby a grain-oriented electrical steel sheet having no deterioration of magnetic properties is obtained without causing cracking or chipping due to twining deformation.

    摘要翻译： 在通过热轧含有C：0.001〜0.10质量％，Si：1.0〜5.0质量％，Mn：0.01〜1.0质量％的钢板的方法制造方向性电磁钢板的方法中， S和Se：0.01〜0.05质量％，溶胶。 Al：0.003〜0.050质量％，N：0.001〜0.020质量％，冷轧，进行一次再结晶退火，涂布退火分离剂，最后进行最终退火，进行一次再结晶退火，控制加热 速度S 1在500至600℃至不低于100℃/ s之间，加热速率S2在600至700℃至不低于30℃/ s但不大于0.6×S1之间，并且作为主要 退火分离器的成分使用当活性A不小于4.0时，柠檬酸活性分布的预期值μ（A）为3.5 / 3-1.8，累积频率F为25〜45％的MgO，由此得到晶粒取向电 不会因缠绕变形而引起开裂或切屑而获得磁特性不变的钢板。

    METHOD FOR PRODUCING ORIENTED MAGNETIC STEEL SHEET
    4.
    发明公开
    METHOD FOR PRODUCING ORIENTED MAGNETIC STEEL SHEET 审中-公开
    VERFAHREN ZUR HERSTELLUNG EINES ORIENTIERTEN MAGNETISCHEN STAHLBLECHS

    公开(公告)号：EP2743358A1

    公开(公告)日：2014-06-18

    申请号：EP12824506.5

    申请日：2012-08-08

    申请人： JFE Steel Corporation

    发明人： WATANABE, Makoto ,  SHINGAKI, Yukihiro ,  TAKAMIYA, Toshito ,  OKUBO, Tomoyuki

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

    CPC分类号： H01F41/04 ,  C21D6/00 ,  C21D8/12 ,  C21D8/1233 ,  C21D8/1266 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/60 ,  H01F1/16

    摘要： In a method of producing a grain-oriented electrical steel sheet by subjecting a coil for grain-oriented electrical steel sheet after cold rolling to a primary recrystallization annealing, applying an annealing separator thereon, and conducting final annealing, rapid heating is conducted at a rate of not less than 80°C/sec from 500°C to 700°C in the course of heating for the primary recrystallization annealing, and a temperature keeping treatment is conducted for 2 to 100 hours from 700°C to 1000°C in the course of heating for the final annealing, and further, the final annealing is preferably conducted by laying a thermal insulation material on an upper surface of a coil supporting stand in an annealing furnace used for the final annealing concentrically from the outer periphery of the coil supporting stand and over an area of not less than 20% of the radius of the coil supporting stand, whereby shape defects generated in the final annealing are reduced and the product yield is increased.

    摘要翻译： 在通过使冷轧后的晶粒取向电工钢板的线圈进行一次再结晶退火，在其上涂布退火分离剂并进行最终退火的方法来制造方向性电磁钢板的方法中，以一定速度进行快速加热 在一次再结晶退火的加热过程中从500℃至700℃不低于80℃/秒，并且在700℃至1000℃下进行2至100小时的保温处理 进行最终退火的加热过程，此外，最终退火优选通过在用于最终退火的退火炉中的线圈支撑架的上表面上从线圈支撑的外周同心地放置绝热材料 站立在不少于线圈支撑架半径的20％的面积上，从而减少了最终退火中产生的形状缺陷，产品产量为i ncreased。