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    Grain-Oriented Electrical Steel Sheet and Method for Manufacturing Grain-Oriented Electrical Steel Sheet
    131.
    发明申请
    Grain-Oriented Electrical Steel Sheet and Method for Manufacturing Grain-Oriented Electrical Steel Sheet 有权
    晶粒取向电工钢板及其制造面向电工钢板的方法

    公开(公告)号：US20080190520A1

    公开(公告)日：2008-08-14

    申请号：US11664324

    申请日：2005-11-07

    Applicant: Makoto Watanabe ,  Hiroaki Toda ,  Mineo Muraki

    Inventor： Makoto Watanabe ,  Hiroaki Toda ,  Mineo Muraki

    IPC: C21D1/26 ,  C22C38/00

    CPC classification number: C21D8/12 ,  C21D8/1272 ,  C21D8/1283 ,  C21D8/1288 ,  C21D2201/05 ,  C23C22/18 ,  C23C22/188 ,  C23C22/74 ,  C23C26/00 ,  C23C28/042 ,  H01F1/14783

    Abstract: In a grain-oriented electrical steel sheet having phosphate-based coatings, which contain no chromium and which impart a tension, on the surfaces of a steel sheet with ceramic underlying films therebetween, the coating amount of oxygen in the underlying film is 2.0 g/m2 or more and 3.5 g/m2 or less relative to both surfaces of the steel sheet. Consequently, a grain-oriented electrical steel sheet with a chromium-less coating is provided. The resulting steel sheet has coating properties at the same level as those of a steel sheet with chromium-containing coatings and realizes high hygroscopicity resistance and a low iron loss without variations.

    Abstract translation: 在其间具有陶瓷底层的钢板的表面上，在不含铬并赋予张力的磷酸盐系涂层的方向性电磁钢板中，下层膜中的氧的涂布量为2.0g / 相对于钢板的两个表面，m 2以上且3.5g / m 2以下。 因此，提供了具有无铬涂层的晶粒取向电工钢板。 得到的钢板具有与含铬涂层的钢板相同的涂层性能，并且实现了高吸湿性和低铁损，而没有变化。

    Process for the production of grain oriented electrical steel
    132.
    发明授权
    Process for the production of grain oriented electrical steel 有权
    晶粒取向电工钢的生产工艺

    公开(公告)号：US07198682B2

    公开(公告)日：2007-04-03

    申请号：US10450977

    申请日：2001-12-17

    Applicant: Stefano Cicale′ ,  Stefano Fortunati ,  Giuseppe Abbruzzese

    Inventor： Stefano Cicale′ ,  Stefano Fortunati ,  Giuseppe Abbruzzese

    IPC: H01F1/147

    CPC classification number: C21D8/1222 ,  C21D8/1211 ,  C21D8/1233 ,  C21D8/1255 ,  C21D2201/05

    Abstract: A process for the production of electrical steel strips, in which a strip is directly cast from molten steel and contains alloy elements apt to generate a precipitation of sulphides and/or nitrides apt to inhibit the grain growth. The strip is hot rolled in-line with the casting operation at a temperature between 1250 and 1000° C., and in which the strip is coiled after hot rolling at a temperature of less than 780° C. if sulphides are utilized, or at a temperature of less than 600° C. if nitrides, or nitrides plus sulphides, are utilized.

    Abstract translation: 一种用于生产电钢带的方法，其中钢带从钢水直接铸造并且包含易于产生易于抑制晶粒生长的硫化物和/或氮化物沉淀的合金元素。 在1250〜1000℃之间的温度下，将带材与铸造工序一起热轧，并且如果使用硫化物，则在低于780℃的温度下在热轧后卷取带材，或者在 如果使用氮化物或氮化物和硫化物，则温度低于600℃。

    Doubly oriented magnetic steel sheet and method for manufacturing the same
    139.
    发明授权
    Doubly oriented magnetic steel sheet and method for manufacturing the same 失效
    双向电磁钢板及其制造方法

    公开(公告)号：US5948180A

    公开(公告)日：1999-09-07

    申请号：US106361

    申请日：1998-06-29

    Applicant: Toshiro Tomida ,  Shigeo Uenoya ,  Naoyuki Sano

    Inventor： Toshiro Tomida ,  Shigeo Uenoya ,  Naoyuki Sano

    IPC: C21D8/12 ,  H01F1/147 ,  H01F1/04

    CPC classification number: H01F1/14775 ,  C21D8/12 ,  C21D2201/05

    Abstract: (1) A doubly oriented silicon steel sheet having excellent magnetic characteristics in two directions, i.e. in a rolling direction and in a direction perpendicular to the rolling direction, and most suited for use as material for cores of small-sized transformers, and (2) a method for manufacturing the same. The doubly oriented silicon steel sheet as mentioned above in (1) is characterized in that: Si and Mn are contained in amounts which satisfy a predetermined formula of relation; an average crystal grain is as large as 1 to 8 times the thickness of the sheet as measured on a cross section parallel to the surface of the sheet; and at least 60% of all crystal grains have a size of X/3 to 3X, where X is an average grain size. In the doubly oriented silicon steel sheet, preferably, crystal grains having a crystallographic orientation difference within .+-.15 degrees from a cubic orientation of {100} occupy an areal percentage of not less than 70%, or the thickness of a surface oxide layer of the steel sheet is not greater than 0.5 .mu.m. The method for manufacturing a doubly oriented magnetic steel sheet as mentioned above in (2) includes the steps of hot-rolling and cold-rolling steel containing C in an amount of 0.02% to 0.2% and Si and M in amounts satisfying a predetermined formula of relation, wherein annealing is performed at a temperature not lower than 750.degree. C. and through quick application of heat during cold rolling; and the obtained steel sheet is annealed under reduced pressure through use of an annealing separator. In this method for manufacturing a doubly oriented magnetic steel sheet, preferably, a rolling reduction is 40% to 85% in cold rolling performed before and after intermediate annealing.

    Abstract translation: （1）一种双向取向硅钢板，其在两个方向上具有优异的磁特性，即在轧制方向和与轧制方向垂直的方向上，最适合用作小型变压器的铁心材料，（2） ）其制造方法。 如上述（1）所述的双取向硅钢板的特征在于：Si和Mn的含量满足规定的关系式; 在平行于片材表面的截面上测量的平均晶粒大小为片材厚度的1至8倍; 并且所有晶粒的至少60％具有X / 3至3X的尺寸，其中X是平均晶粒尺寸。 在双取向硅钢板中，优选地，具有{100} <001>的立方取向的±15度以内的晶体取向差的晶粒占面积百分比不小于70％，或者厚度为 钢板的表面氧化层不大于0.5μm。 如上述（2）所述的双向取向电磁钢板的制造方法，包括含有C：0.02〜0.2％的钢的热轧和冷轧钢的工序，以及满足规定的式 的关系，其中退火在不低于750℃的温度下进行，并且在冷轧期间通过快速加热; 通过使用退火分离机将得到的钢板进行减压退火。 在这种制造双向电磁钢板的方法中，优选在中间退火之前和之后的冷轧中，轧制压下率为40％至85％。

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