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    • 2. 发明申请
    • Fe-Cr-Si系無方向性電磁鋼板およびその製造方法
    • Fe-Cr-Si非定向电磁钢板及其制造方法
    • WO2004059022A1
    • 2004-07-15
    • PCT/JP2003/016229
    • 2003-12-18
    • JFEスチール株式会社大村 健河野 雅昭河野 正樹
    • 大村 健河野 雅昭河野 正樹
    • C22C38/00
    • C21D1/76C22C38/004C22C38/008C22C38/06C22C38/34C22C38/60H01F1/14716
    • An Fe-Cr-Si non-oriented electromagnetic steel sheet comprising 2.5 to 10 mass% of Si, 1.5 to 20 mass% of Cr, 0.006 mass% or less of C, 0.002 mass% or less of N, 0.005 mass% or less of S, 0.005 mass% or less of Ti and 0.005 mass% or less of Nb, optionally together with 0.1 to 2 mass% of Al and either or both of Sb and Sn provided that the amount of each of Sb and Sn is in the range of 0.005 to 1 mass%, with the balance composed of Fe and unavoidable impurities. The electric resistance of steel is 60 muohmcm or higher, and the quantity of Cr-containing nitride lying in the interior of steel sheet is 2500 or less per mm . Thus, there is provided a non-oriented electromagnetic steel sheet that excels in magnetic properties in high-frequency region, especially region of 1 kHz or higher frequency, through advantageous resolution of the problem that high electrical resistance realized by high Si and high Cr contents is not fully utilized in high-frequency region of 10 kHz or below.
    • 包含2.5〜10质量%的Si,1.5〜20质量%的Cr,0.006质量%以下的C,0.002质量%以下的N,0.005质量%以下的Fe-Cr-Si无取向电磁钢板 的S,0.005质量%以下的Ti和0.005质量%以下的Nb,任选地与0.1〜2质量%的Al以及Sb和Sn中的任一种或两者相比,Sb和Sn中的每一种都在 范围为0.005〜1质量%,余量由Fe和不可避免的杂质构成。 钢的电阻为60Ωhm以上,并且,钢板内部的含Cr氮化物的量为每mm 2以下2500以下。 因此,通过有效解决由高Si和高Cr含量实现的高电阻的问题,提供了在高频区域,特别是1kHz或更高频率区域的磁性能优异的无取向电磁钢板 在10kHz以下的高频区域未被充分利用。