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11 条记录 (耗时 0.012 秒)

    METHOD FOR MANUFACTURING GRAIN ORIENTED SILICON STEEL WITH SINGLE COLD ROLLING
    1.
    发明公开
    METHOD FOR MANUFACTURING GRAIN ORIENTED SILICON STEEL WITH SINGLE COLD ROLLING 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON KORNORIENTIERTEM SILICIUMSTAHL MIT EINEM EINZIGEN WARMWALZEN

    公开(公告)号：EP2390373A1

    公开(公告)日：2011-11-30

    申请号：EP09836084.5

    申请日：2009-12-31

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

    发明人： LI, Guobao ,  ZHANG, Pijun ,  YANG, Yongjie ,  SHEN, Kanyi ,  HU, Zhuochao ,  WU, Peiwen ,  JIN, Weizhong ,  JIANG, Quanli

    IPC分类号： C21D8/12 ,  C22C38/02

    CPC分类号： C21D8/12 ,  B21B1/36 ,  B21B3/00 ,  B21B9/00 ,  C21D1/28 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C22C38/001 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16 ,  H01F1/14775

    摘要： The invention provides a method for producing grain-oriented silicon steel with single cold rolling, comprising: 1) smelting, refining and continuous casting to obtain a casting blank; 2) hot rolling; 3) normalization, i.e, normalizing annealing and cooling; 4) cold-rolling, i.e. single cold rolling at a cold rolling reduction rate of 75-92%; 5) decarburizing annealing at 780-880°C for 80-350s in a protective atmosphere having a due point of 40-80°C, wherein the total oxygen [O] in the surface of the decarburized sheet: 171/t≤ [O]≤ 313/t (t represents the actual thickness of the steel sheet in mm), the amount of absorbed nitrogen: 2-10ppm; 6) high temperature annealing, wherein the dew point of the protective atmosphere: 0-50°C, the temperature holding time at the first stage: 6-30h, the amount of absorbed nitrogen during high-temperature annealing: 10-40ppm; 7) hot-leveling annealing. The invention may control the primary recrystallization microstructure of steel sheet effectively by controlling the normalization process of hot rolled sheet to form sufficient favorable (Al, Si)N inclusions from nitrogen absorbed by slab during decarburizing annealing and low-temperature holding of high-temperature annealing, facilitating the generation of stable, perfect secondary recrystallization microstructure of the final products. In addition, the invention avoids the impact of nitridation using ammonia on the underlying layer in prior art, and thus the formation of a good glass film underlying layer is favored.

    摘要翻译： 本发明提供了一种单次冷轧生产晶粒取向硅钢的方法，包括：1）冶炼，精炼和连续铸造，得到铸坯; 2）热轧; 3）归一化，即归一化退火和冷却; 4）冷轧，即以75-92％的冷轧压下率进行单次冷轧; 5）在适当点为40-80℃的保护气氛中，在780-880℃下脱碳退火80-350s，其中脱碳片表面的总氧[O]为：171 / t‰[ O]‰³313 / t（t表示钢板的实际厚度，单位为mm），吸附氮量为2-10ppm; 6）高温退火，其中保护气氛的露点为0-50℃，第一阶段的保温时间为6-30h，高温退火时氮吸附量为10-40ppm; 7）热水平退火。 本发明可以通过控制热轧板的归一化过程来控制钢板的一次再结晶显微组织，从而在脱碳退火和低温保持高温退火过程中从板坯吸收的氮形成足够有利的（Al，Si）N夹杂物 ，促进了最终产品的稳定，完美的二次再结晶微观结构的产生。 此外，本发明避免了使用氨氮在现有技术中对下层的影响，因此有利于形成良好的玻璃膜下层。

    HIGH MAGNETIC INDUCTION ORIENTED SILICON STEEL AND MANUFACTURING METHOD THEREOF
    6.
    发明公开
    HIGH MAGNETIC INDUCTION ORIENTED SILICON STEEL AND MANUFACTURING METHOD THEREOF 审中-公开
    KORNORIENTIERTER SILICIUMSTAHL MIT HOHER MAGNETISCHER INDUKTION UND HERSTELLUNGSVERFAHRENDAFÜR

    公开(公告)号：EP2891728A1

    公开(公告)日：2015-07-08

    申请号：EP12883627.7

    申请日：2012-12-11

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

    发明人： ZHANG, Huabing ,  LI, Guobao ,  LU, Xijiang ,  YANG, Yongjie ,  HU, Zhuochao ,  SHEN, Kanyi ,  GAO, Jiaqiang ,  WU, Meihong

    IPC分类号： C22C38/34 ,  C21D1/26 ,  C21D3/04 ,  C21D8/12

    摘要： The invention relates to high magnetic induction oriented silicon steel and a preparation method thereof. The oriented silicon steel comprises the following chemical elements by weight percent: 0.035-0.120% of C, 2.9-4.5% of Si, 0.05-0.20% of Mn, 0.005-0.050% of P, 0.005-0.012% of S, 0.015-0.035% of Als, 0.001-0.010% of N, 0.05-0.30% of Cr, 0.005-0.090% of Sn, not more than 0.0100% of V, not more than 0.0100% of Ti, at least one of trace elements of Sb, Bi, Nb and Mo, and the balance of Fe and other inevitable impurities, wherein Sb+Bi+Nb+Mo is 0.0015-0.0250% and (Sb/121.8+Bi/209.0+Nb/92.9+Mo/95.9)/(Ti/47.9+V/50.9) ranges from 0.1 to 15.

    摘要翻译： 本发明涉及高磁感应取向硅钢及其制备方法。 定向硅钢由以下重量百分比组成：C：0.035-0.120％，Si：2.9-4.5％，Mn：0.05-0.20％，P：0.005-0.050％，S：0.005〜0.012％ 0.035％的Al，0.001-0.010％的N，0.05-0.30％的Cr，0.005-0.090％的Sn，不大于0.0100％的V，不大于0.0100％的Ti，Sb中的至少一种微量元素 ，Bi，Nb和Mo，余量为Fe等不可避免的杂质，Sb + Bi + Nb + Mo为0.0015〜0.0250％，（Sb / 121.8 + Bi / 209.0 + Nb / 92.9 + Mo / 95.9）/（ Ti / 47.9±V / 50.9）为0.1〜15。

    LOW-MAGNETOSTRICTIVE ORIENTED SILICON STEEL AND MANUFACTURING METHOD THEREFOR
    10.
    发明公开
    LOW-MAGNETOSTRICTIVE ORIENTED SILICON STEEL AND MANUFACTURING METHOD THEREFOR 审中-公开

    公开(公告)号：EP4261853A1

    公开(公告)日：2023-10-18

    申请号：EP22736629.1

    申请日：2022-01-11

    申请人： BAOSHAN IRON & STEEL CO., LTD.

    发明人： WU, Meihong ,  LI, Guobao ,  CHU, Shuangjie ,  ZHAO, Zipeng ,  LIU, Baojun ,  SHEN, Kanyi ,  YANG, Yongjie ,  HU, Zhuochao ,  JI, Yaming ,  LING, Chen

    IPC分类号： H01F1/18 ,  B23K26/362 ,  C21D1/26 ,  C21D6/00 ,  C21D8/12 ,  C21D9/00 ,  C22C38/02

    摘要： A manufacturing method for low-magnetostrictive oriented silicon steel is provided, wherein the oriented silicon steel comprises a silicon steel substrate and an insulating coating on the surface of the silicon steel substrate. The manufacturing method comprises: performing single-sided laser etching on the silicon steel substrate, wherein the side of the silicon steel substrate, on which single-sided laser etching is performed, is a first surface, and the side opposite to the first surface is a second surface; determining a deflection difference between the first surface and the second surface based on the power of the laser etching, and determining a difference in the amount of the insulating coatings on the first surface and the second surface based on the deflection difference; and forming insulating coatings on the first surface and the second surface. The amount of the insulating coating on the second surface is greater than that on the first surface, and the amount of the insulating coating on the first surface and that on the second surface satisfy the difference in the amount of the insulating coatings. By using the manufacturing method in the present invention, the problem of a relatively large magnetostrictive deviation between two sides of oriented silicon steel caused by single-sided laser etching can be solved. Oriented silicon steel manufactured by the aforementioned manufacturing method is also provided. A transformer iron core prepared using the oriented silicon steel enables a transformer to have low noise during operation.