Nonoriented electrical steel sheet excellent in core loss
    1.
    发明授权
    Nonoriented electrical steel sheet excellent in core loss 有权
    无方向性电磁钢板芯损耗优异

    公开(公告)号:US07608154B2

    公开(公告)日:2009-10-27

    申请号:US11663095

    申请日:2005-09-09

    IPC分类号: H01F1/147

    摘要: A nonoriented electrical steel sheet excellent in core loss comprising copper sulfides with a sphere-equivalent radius of 100 nm or less, wherein the number density of the copper sulfides is less than 1×1010 [inclusions/mm3]. Preferably, the percentage of the number of copper sulfides with a (major axis)/(minor axis) ratio of more than 2 per total number of copper sulfides is 30% or less. The steel preferably further comprises Cu of 0.5 mass % or less and REM of 0.0005% or more and 0.03% or less, wherein the following expression (1) or expressions (1) and (2) are met: [REM]×[Cu]3≧7.5×10−11  (1), ([REM]−0.003)0.1×[Cu]2≦1.25×10−4  (2).

    摘要翻译: 核心损失优异的非取向电工钢板,其包含球半径为100nm以下的硫化铜,其中硫化铜的数量密度小于1×10 10 [夹杂物/ mm 3]。 优选地,每个硫化铜总数的(长轴)/(短轴)比大于2的硫化铜的数量的百分比为30%以下。 钢优选还含有0.5质量%以下的Cu和0.0005%以上且0.03%以下的REM,其中满足以下表达式(1)或表达式(1)和(2):[REM] x [Cu ] 3> = 7.5×10-11(1),([REM] -0.003)0.1x [Cu] 2 <= 1.25×10-4(2)。

    Nonoriented Electrical Steel Sheet Excellent In Core Loss
    2.
    发明申请
    Nonoriented Electrical Steel Sheet Excellent In Core Loss 有权
    无取向电工钢板优异的芯损

    公开(公告)号:US20080118389A1

    公开(公告)日:2008-05-22

    申请号:US11663095

    申请日:2005-09-09

    IPC分类号: C22C38/02 C22C38/00

    摘要: A nonoriented electrical steel sheet excellent in core loss comprising copper sulfides with a sphere-equivalent radius of 100 nm or less, wherein the number density of the copper sulfides is less than 1×1010 [inclusions/mm3]. Preferably, the percentage of the number of copper sulfides with a (major axis)/(minor axis) ratio of more than 2 per total number of copper sulfides is 30% or less. The steel preferably further comprises Cu of 0.5 mass % or less and REM of 0.0005% or more and 0.03% or less, wherein the following expression (1) or expressions (1) and (2) are met: [REM]×[Cu]3≧7.5×10−11,   (1) ([REM]−0.003)0.1×[Cu]2≦1.25×10−4.   (2)

    摘要翻译: 一种磁芯损耗优异的非取向电工钢,其包含球半径为100nm以下的硫化铜,其中,硫化铜的数量密度小于1×10 10 [夹杂物/ mm 2 > 3 ]。 优选地,每个硫化铜总数的(长轴)/(短轴)比大于2的硫化铜的数量的百分比为30%以下。 钢优选还含有0.5质量%以下的Cu和0.0005%以上且0.03%以下的REM,其中符合以下表达式(1)或表达式(1)和(2):< 公式描述=“在线公式”end =“lead”?> [REM] x [Cu] 3+ = 7.5×10 -11,(1) in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?>([REM] -0.003)< SUP> 0.1×[Cu] 2 <= 1.25×10 -4。 (2)<?in-line-formula description =“In-line Formulas”end =“tail”?>

    Non-Oriented Electrical Steel Superior In Core Loss
    9.
    发明申请
    Non-Oriented Electrical Steel Superior In Core Loss 有权
    无磁导电钢优于铁芯损耗

    公开(公告)号:US20080112838A1

    公开(公告)日:2008-05-15

    申请号:US11666844

    申请日:2005-09-28

    IPC分类号: C22C38/18 C22C38/00 C22C38/02

    摘要: Non-oriented electrical steel sheet superior in core loss characterized by containing, by mass %, C: 0.01% or less, Si: 0.1% to 7.0%, Al: 0.1% to 3.0%, Mn: 0.1% to 2.0%, N: 0.005% or less, Ti: 0.02% or less, REM: 0.05% or less, S: 0.005% or less, O: 0.005% or less, and a balance of iron and unavoidable impurities and having a mass % of S shown by [S], a mass % of O shown by [O], a mass % of REM shown by [REM], a mass % of Ti shown by [Ti], and a mass % of N shown by [N] satisfying [Formula 1] and [Formula 2]: [REM]2×[O]2×[S]≧1×10−15[Formula 1] ([REM]2×[O]2×[S])÷([Ti]×[N])≧1×10−10[Formula 2]

    摘要翻译: 铁损优异的无方向性电工钢板,其特征在于以质量%计含有C:0.01%以下,Si:0.1〜7.0%,Al:0.1〜3.0%,Mn:0.1〜2.0%,N :0.005%以下,Ti:0.02%以下,REM:0.05%以下,S:0.005%以下,O:0.005%以下,余量为铁和不可避免的杂质,S为质量% 通过[S]表示[O]表示的O的质量%,[REM]所示的REM的质量%,[Ti]所示的Ti的质量%,[N]所示的N的质量%满足 [式1]和[式2]:<?in-line-formula description =“In-line Formulas”end =“lead”?> [REM] 2 x [O] 2×[S]> = 1×10 -15 [式1] <?在线公式描述=“在线公式”end =“tail”?> <?in -line-formula description =“In-line Formulas”end =“lead”?>([REM] 2 x [O] 2 x [S])/( [Ti] x [N])> = 1×10 -10 [式2] <?in-line-formula description =“In-line Formulas”end =“tail”?>