发明名称 |
RAPIDLY QUENCHED FE-BASED SOFT-MAGNETIC ALLOY RIBBON AND ITS PRODUCTION METHOD AND CORE |
摘要 |
A rapidly quenched Fe-based soft-magnetic alloy ribbon having wave-like undulations on a free surface, the wave-like undulations having transverse troughs arranged at substantially constant intervals in a longitudinal direction, and the troughs having an average amplitude D of 20 mm or less, is produced by a method comprising (a) keeping a transverse temperature distribution in a melt nozzle within ±15° C. to have as small a temperature distribution as possible in a melt paddle of the alloy, and (b) forming numerous fine linear scratches on a cooling roll surface by a wire brush, thereby providing a ground surface of the cooling roll with an arithmetical mean (average) roughness Ra of 0.1-1 mum and a maximum roughness depth Rmax of 0.5-10 mum.
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申请公布号 |
US2013314198(A1) |
申请公布日期 |
2013.11.28 |
申请号 |
US201213981809 |
申请日期 |
2012.01.27 |
申请人 |
YOSHIZAWA YOSHIHITO;OHTA MOTOKI;ITO NAOKI;HITACHI METALS, LTD. |
发明人 |
YOSHIZAWA YOSHIHITO;OHTA MOTOKI;ITO NAOKI |
分类号 |
H01F3/04;B24B5/37;H01F41/02 |
主分类号 |
H01F3/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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