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    MANUFACTURE METHOD OF ORIENTED SILICON STEEL HAVING GOOD MAGNETIC PERFORMANCE
    3.
    发明授权
    MANUFACTURE METHOD OF ORIENTED SILICON STEEL HAVING GOOD MAGNETIC PERFORMANCE 有权
    一种具有良好磁性能的取向硅钢的制造方法

    公开(公告)号：EP2644715B1

    公开(公告)日：2018-04-25

    申请号：EP11842864.8

    申请日：2011-04-28

    申请人： Baoshan Iron & Steel Co., Ltd.

    发明人： WU, Meihong ,  JIN, Weizhong ,  SUN, Huande ,  YANG, Guohua ,  SHEN, Kanyi ,  HUANG, Jie ,  HU, Deyang ,  LI, Guobao

    IPC分类号： C21D8/12 ,  B21B37/48

    CPC分类号： C21D8/12 ,  C21D8/1244 ,  C21D8/1272 ,  C21D8/1277 ,  C21D8/1283 ,  C21D2201/05 ,  C21D2211/008

    摘要： A method for manufacturing a grain-oriented silicon steel having excellent magnetic performance, comprising steps as follows 1) conventionally melting and casting into a steel blank; 2) heating the steel blank and hot rolling the same into a strip of steel; 3)normalizing process; carrying out the normalizing process having two stages, wherein the strip is firstly heated to 1100ˆ¼1200°C, then cooled to 900ˆ¼1000 °C within 50-200s; and next, the strip is rapidly cooled in water having a temperature of 10ˆ¼100; in this period, a tension force is applied to the strip of steel, the strip of steel in the temperature range of 900°Cˆ¼500°C has a stress of 1ˆ¼200N/mm 2 ; 4)cold rolling, i.e. carrying out a primary cold rolling, or a double cold rolling with intermediate annealing; 5)carrying out primary recrystallizing annealing, then coating an annealing separator, whose main composition is MgO, to carry out final product annealing comprising secondary recrystallizing annealing and purifying annealing. The invention optimizes the content and distribution of martensite in the steel plate after normalization by adjusting the tension force applied to the steel plate while normalization transformation, so as to make the content of martensite in the range ensuring a better magnetic performance of the final product and to optimize the magnetic performance of final products.

    A METHOD OF MANUFACTURING ORIENTED SI STEEL CONTAINING CU
    4.
    发明公开
    A METHOD OF MANUFACTURING ORIENTED SI STEEL CONTAINING CU 有权
    VERFAHREN ZUR HERSTELLUNG VON ORIENTIERTEM CU-HALTIGEN SI-STAHL

    公开(公告)号：EP2322674A1

    公开(公告)日：2011-05-18

    申请号：EP09804456.3

    申请日：2009-04-24

    申请人： Baoshan Iron & Steel Co., Ltd.

    发明人： JI, Yaming ,  SUN, Huande ,  YANG, Guohua ,  YANG, Yongjie ,  XU, Yunpeng ,  HUANG, Changguo ,  LI, Guobao

    IPC分类号： C21D8/12 ,  C22C38/16

    CPC分类号： C22C38/04 ,  C21D1/26 ,  C21D6/008 ,  C21D8/02 ,  C21D8/12 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1266 ,  C21D8/1283 ,  C21D10/005 ,  C22C38/001 ,  C22C38/02 ,  C22C38/06 ,  C22C38/16

    摘要： A method of manufacturing oriented Si steel containing Cu with high electric-magnetic property comprises: hot rolling slab; after first cold rolling, heating it to 800°C or higher temperature and performing intermediate decarburization annealing in a protective atmosphere with P H2O /P H2 of 0.50∼0.88 for 3-8 minutes, to decrease carbon content of the steel plate to less than 30ppm; then peening and acid-pickling to remove oxide of Fe on surface and to control oxygen content to lower than 500ppm; secondary cold rolling to final thickness and coating separation agent in water-slurry form; drying to decrease water content to lower than 1.5%; high-temperature annealing in a protective atmosphere containing hydrogen with oxidation degree (P H2O /P H2 ) of 0.0001-0.2; finally applying a tension coating and leveling tension annealing.

    摘要翻译： 含有具有高电磁性能的Cu的取向Si钢的方法包括：热轧板; 第一次冷轧后，将其加热到800℃以上，在保护气氛中进行中间脱碳退火，P H2O / P H2为0.50〜0.88，3-8分钟，使钢板的碳含量降低 超过30ppm; 然后进行喷丸和酸洗以除去表面上的Fe的氧化物，并控制氧含量低于500ppm; 二次冷轧至最终厚度，涂层分离剂为水浆形式; 干燥以降低含水量至1.5％以下; 在含氢氧化程度（P H2O / P H2）为0.0001-0.2的保护气氛中进行高温退火; 最后应用张力涂层和流平张力退火。

    ELECTROMAGNETIC PERFORMANCE DETECTION METHOD FOR ORIENTED SILICON STEEL
    5.
    发明授权
    ELECTROMAGNETIC PERFORMANCE DETECTION METHOD FOR ORIENTED SILICON STEEL 有权

    公开(公告)号：EP2533067B1

    公开(公告)日：2018-08-15

    申请号：EP11797513.6

    申请日：2011-04-12

    申请人： Baoshan Iron & Steel Co., Ltd.

    发明人： WU, Meihong ,  JIN, Weizhong ,  SUN, Huande ,  YANG, Guohua ,  SHEN, Kanyi ,  HUANG, Jie ,  LI, Guobao

    IPC分类号： G01R33/12 ,  G01N27/72 ,  G01R33/00 ,  G06F17/13

    CPC分类号： G06F17/13 ,  G01N27/72 ,  G01R33/0064

    摘要： A method for detecting electromagnetic property of oriented silicon steel, the method comprises: measuring Euler angles of each of crystal grains in a specimen by use of metallographic etch-pit method; calculating orientation deviation angle ¸ i (degree) of the crystal grain; combining area Si (mm 2 ) of the crystal grain and correction coefficient X of element Si (X=0.1~10T/degree); correcting on the basis of the magnetic property B 0 (saturation magnetic induction, T) of single-crystal material by using these parameters (¸ i , S i , X), formula for correcting is obtaining electromagnetic property B 8 of the oriented silicon steel by the above calculations. The present invention can implement detection of electromagnetic property of a specimen under the circumstances that there is no magnetism measuring device or that magnetism measuring devices cannot be used due to reasons such as weight and size of the specimen being too small or surface quality of the specimen being poor.

    MANUFACTURE METHOD OF ORIENTED SILICON STEEL HAVING GOOD MAGNETIC PERFORMANCE
    7.
    发明公开
    MANUFACTURE METHOD OF ORIENTED SILICON STEEL HAVING GOOD MAGNETIC PERFORMANCE 有权
    HERSTELLUNGSVERFAHRENFÜREINEN AUSGERICHTETEN SILICIUMSTAHL MIT HOHER MAGNETKRAFT

    公开(公告)号：EP2644715A1

    公开(公告)日：2013-10-02

    申请号：EP11842864.8

    申请日：2011-04-28

    申请人： Baoshan Iron & Steel Co., Ltd.

    发明人： WU, Meihong ,  JIN, Weizhong ,  SUN, Huande ,  YANG, Guohua ,  SHEN, Kanyi ,  HUANG, Jie ,  HU, Deyang ,  LI, Guobao

    IPC分类号： C21D8/12 ,  B21B37/48

    CPC分类号： C21D8/12 ,  C21D8/1244 ,  C21D8/1272 ,  C21D8/1277 ,  C21D8/1283 ,  C21D2201/05 ,  C21D2211/008

    摘要： A method for manufacturing a grain-oriented silicon steel having excellent magnetic performance, comprising steps as follows 1) conventionally melting and casting into a steel blank; 2) heating the steel blank and hot rolling the same into a strip of steel; 3)normalizing process; carrying out the normalizing process having two stages, wherein the strip is firstly heated to 1100∼1200°C, then cooled to 900∼1000 °C within 50-200s; and next, the strip is rapidly cooled in water having a temperature of 10∼100; in this period, a tension force is applied to the strip of steel, the strip of steel in the temperature range of 900°C∼500°C has a stress of 1∼200N/mm 2 ; 4)cold rolling, i.e. carrying out a primary cold rolling, or a double cold rolling with intermediate annealing; 5)carrying out primary recrystallizing annealing, then coating an annealing separator, whose main composition is MgO, to carry out final product annealing comprising secondary recrystallizing annealing and purifying annealing. The invention optimizes the content and distribution of martensite in the steel plate after normalization by adjusting the tension force applied to the steel plate while normalization transformation, so as to make the content of martensite in the range ensuring a better magnetic performance of the final product and to optimize the magnetic performance of final products.

    摘要翻译： 一种制造具有优异磁性能的晶粒取向硅钢的方法，包括以下步骤：1）常规地熔融和铸造成钢坯; 2）加热钢坯并将其热轧成钢带; 3）归一化过程; 进行两阶段的归一化处理，首先将钢带加热至1100-11200℃，然后在50-200秒内冷却至900-1000℃; 然后将条带在温度为10-1100的水中快速冷却; 在此期间，对钢带施加张力，在900℃〜500℃的温度范围内钢带的应力为1 / 200N / mm 2; 4）冷轧，即进行一次冷轧，或进行中间退火的双层冷轧; 5）进行一次再结晶退火，然后涂覆主要组成为MgO的退火分离剂，进行包括二次再结晶退火和纯化退火的最终产品退火。 本发明通过调整在正常化转变时施加到钢板上的张力而使归一化后的钢板中的马氏体的含量和分布优化，使马氏体含量在确保最终产品更好的磁性能的范围内; 以优化最终产品的磁性能。

    A MANUFACTURING METHOD OF ORIENTED SI STEEL WITH HIGH ELECTRIC-MAGNETIC PROPERTY
    8.
    发明公开
    A MANUFACTURING METHOD OF ORIENTED SI STEEL WITH HIGH ELECTRIC-MAGNETIC PROPERTY 有权
    HERMTELLUNGSVERFAHRENFÜRORIENTIERTEN SI-STAHL MIT HOHER ELEKTRISCH-MAGNETISCHER EIGENSPRISHI

    公开(公告)号：EP2272995A1

    公开(公告)日：2011-01-12

    申请号：EP09725052.6

    申请日：2009-03-25

    申请人： Baoshan Iron & Steel Co., Ltd.

    发明人： YANG, Guohua ,  SUN, Huande ,  JI, Yaming ,  LI, Guobao ,  HEI, Hongxu

    IPC分类号： C22C38/16 ,  C21D8/12

    CPC分类号： C22C38/02 ,  C21D1/26 ,  C21D3/04 ,  C21D6/008 ,  C21D8/02 ,  C21D8/0278 ,  C21D8/0284 ,  C21D8/12 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1266 ,  C21D8/1283 ,  C21D9/46 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16

    摘要： A manufacturing method of oriented Si steel with high electric-magnetic property comprises the following steps: smelting steel in converter or electric furnace; refining molten steel in two stages; continuous casting to obtain slab; hot rolling; first cold rolling; decarburizing annealing; secondary cold rolling; applying an annealing separator based on MgO and annealing at high temperature; applying an insulating coating and leveling tension annealing. The slab comprises (in wt%): C 0.020-0.050%, Si 2.6-3.6%, S 0.015-0.025%, Als 0.008-0.028%, N 0.005-0.020%, Mn 0.15-0.5%, Cu 0.3-1.2%, balance Fe and inevitable impurities, in which 10≤ Mn/S≤20 and Cu/Mn≥2. The method could produce oriented Si steel with high magnetic induction intensity and low iron loss at low cost.

    摘要翻译： 具有高电磁性能的取向Si钢的制造方法包括以下步骤：在转炉或电炉中冶炼钢; 两级精炼钢水; 连续铸造获得板坯; 热轧 第一次冷轧; 脱碳退火; 二次冷轧; 应用基于MgO的退火分离器和高温退火; 施加绝缘涂层和流平张力退火。 板坯包含（重量％）：C 0.020-0.050％，Si 2.6-3.6％，S 0.015-0.025％，Als 0.008-0.028％，N 0.005-0.020％，Mn 0.15-0.5％，Cu 0.3-1.2％ ，Fe和不可避免的杂质平衡，其中10‰‰Mn / S‰¤20和Cu / Mn‰2。 该方法可以以低成本制造具有高磁感应强度和低铁损的取向Si钢。