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    MANUFACTURE METHOD OF HIGH-EFFICIENCY NON-ORIENTED SILICON STEEL WITH EXCELLENT MAGNETIC PERFORMANCE
    7.
    发明申请
    MANUFACTURE METHOD OF HIGH-EFFICIENCY NON-ORIENTED SILICON STEEL WITH EXCELLENT MAGNETIC PERFORMANCE 有权
    具有优异磁性能的高效非导向硅钢的制造方法

    公开(公告)号：US20130199675A1

    公开(公告)日：2013-08-08

    申请号：US13637611

    申请日：2011-04-27

    申请人： Aihua Ma ,  Bo Wang ,  Shishu Xie ,  Zhanyuan Hu ,  Liang Zou ,  Zitao Wang ,  Yuhua Zhu ,  Jie Huang ,  Bingzhong Jin ,  Xiandong Liu

    发明人： Aihua Ma ,  Bo Wang ,  Shishu Xie ,  Zhanyuan Hu ,  Liang Zou ,  Zitao Wang ,  Yuhua Zhu ,  Jie Huang ,  Bingzhong Jin ,  Xiandong Liu

    IPC分类号： C21D8/00

    CPC分类号： C21D8/005 ,  C21D8/1261 ,  C21D8/1272 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/60 ,  H01F1/16

    摘要： A manufacture method of high-efficiency non-oriented silicon steel with excellent magnetic property, which comprises the following steps: 1) smelting and casting; chemical compositions of non-oriented silicon steel, by weight percent, are: C≦0.0040%, Si: 0.1˜0.8%, Al: 0.002˜1.0%, Mn: 0.10˜1.50%, P: ≦0.2%, Sb: 0.04˜0.08%, S≦0.0030%, N≦0.0020%, Ti≦0.0020%, and the rest is Fe and unavoidable inclusions; molten steel in accordance with the above compositions is smelted and then casted into billets; 2) hot-rolling and pickling; heating temperature for slab is 1100° C.˜1150° C. and finish-rolling temperature is 860° C.˜920° C.; after rolling, the hot-rolled product is air cooled, during which air cooling time t: (2+30×Sb %)s≦t≦7 s; thereafter reeling at a temperature ≧720° C. ; 3) cold-rolling; rolling to form cold-rolled plate with target thickness at a reduction ratio of 70˜18%; 4) annealing; heating up the cold-rolled plate to 800˜1000° C. at heating rate of ≧15° C./s, and holding time is 10 s˜25 s. Under the precondition to ensure magnetic properties, this invention implements low cost manufacture of high efficiency electric steel by adding elements advantageous to favorable texture during steel making, controlling contents of adverse elements and coordinating air cooling time control during hot-rolling with high temperature reeling.

    摘要翻译： 一种具有优异磁性的高效无取向硅钢的制造方法，包括以下步骤：1）熔炼和铸造; 无取向硅钢的化学组成按重量百分比分别为：C@0.0040％，Si：0.1〜0.8％，Al：0.002〜1.0％，Mn：0.10〜1.50％，P：@ 0.2％，Sb：0.04 〜0.08％，S@0.0030%，N@0.0020%，Ti@0.0020%，其余为Fe和不可避免的夹杂物; 根据上述组成的钢水熔炼，然后铸成坯料; 2）热轧酸洗; 板坯加热温度为1100℃〜1150℃，精轧温度为860℃〜920℃。 轧制后，将热轧制品进行空气冷却，在此空气冷却时间t：（2 + 30×Sb％）s @ t @ 7 s; 然后在> 720℃的温度下卷曲; 3）冷轧; 轧制成型，目标厚度为70〜18％的冷轧板; 4）退火; 将冷轧板加热至800〜1000℃，加热速率> 15℃/ s，保温时间为10秒〜25秒。 在确保磁性能的前提下，本发明通过添加有利于钢铁制造中有利组织的元素，控制不利元素的含量和在高温卷取的热轧过程中协调空气冷却时间控制来实现低成本电钢的低成本制造。